JPH09302534A - Lifting and lowering of ring rail when starting spinning machinery and controller for lifting and lowering of ring rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the occurrence of yarn breakage when forming an oblique loop winding at the time of starting spinning machinery and then performing the usual winding. SOLUTION: An oblique winding is formed before performing the usual winding at the time of starting a spinning frame and the winding by a usual chase length is then carried out. When the winding by the usual chase length is performed, a ring rail is initially lifted and lowered at a higher prescribed speed than a lifting and lowering speed at the time of the usual winding a prescribed number of times, and then transferred to the lifting and lowering speed when performing the usual winding. The ring rail is lifted and lowered at a high speed even in a state of the tip of the oblique loop winding separated from a bobbin surface or a snarl remaining in a yarn. Thereby, the yarn is rapidly immobilized in the surface of the bobbin. The lifting and lowering speed and the frequency of lifting and lowering when lifting and lowering the ring rail at the high speed are set at suitable values corresponding to spinning conditions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring rail raising / lowering method and a ring rail raising / lowering control device when starting a spinning machine such as a ring spinning machine and a ring twisting machine.

[0002]

2. Description of the Related Art In a spinning machine such as a ring spinning machine or a ring twisting machine, a thread is wound around a bobbin by the action of a traveler running on a ring flange. Then, at the time of restarting after the doffing with a full pipe, as shown in FIG. 6 (b), after winding the yarn Y around the bobbin B so as to form an oblique loop winding L, normal winding is started. (For example,
Japanese Unexamined Patent Publication No. 50-101615). The purpose of this is to remove the snare generated on the yarn Y connected to the spindle 62 from the draft device through the traveler 61, put the traveler 61 in a posture that facilitates traveling, and apply tension to the yarn Y at the beginning of winding to remove the snare from the traveler 61. This is to prevent the yarn from coming off.

In order to wind the yarn Y in an oblique loop shape, for example, as shown in the diagram of FIG. 6A, the ring rail is made larger than the normal chase length from the winding start position with the spindle stopped. There is a method in which the ring rail is raised and stopped for a predetermined time Ts2 at the raised position, then the ring rail is lowered to the normal winding start position, and then the normal lifting is started. The spindle 62 starts rotating a predetermined time Ts1 after the ring rail 63 starts to move up. It should be noted that at the time of full pipe stop, after forming the bottom thread bunch (bottom bunch) 65 on the bottom thread winding portion 64 of the spindle 62, the ring rail 63 is raised (primarily raised) to the winding start position. Then, the ring rail 63 starts secondary rising from the winding start position at the same time as it is started and is raised to a predetermined position.

[0004]

However, before the yarn Y is wound on the diagonal loop winding L formed on the bobbin B by the normal winding operation, the centrifugal force acting on the diagonal loop winding L and the yarn Due to the unbalance of its own weight, frictional force with the bobbin B, etc., the tip of the oblique loop winding L may be separated from the surface of the bobbin B as shown in FIG. 7A. In this case, the tip of the loop winding L rotates at a position away from the surface of the bobbin B as the spindle 62 rotates. Since the ascending / descending speed of the ring rail 63 during normal winding is slow,
As shown in (b), it takes time for the winding yarn to press the tip end portion of the loop winding L separated from the surface of the bobbin B onto the surface of the bobbin B, and the loop winding speed becomes high. The tip of L may come into contact with the yarn Y being spun and cause yarn breakage.

Also, depending on the spinning conditions such as the spinning fiber type and spinning count, the snare generated when the ring rail 63 for forming the diagonal loop winding L is raised is the snare.
It may remain unsolved even by the fall of. As a result, as shown in FIG. 7C, the tip of the snare 66 may come into contact with the yarn Y being spun and cause yarn breakage.

The present invention has been made in view of the above problems, and an object thereof is to reduce the occurrence of yarn breakage when performing normal winding after forming an oblique loop winding at the start of a spinning machine. (EN) Provided are a ring rail lifting method and a ring rail lifting control device when starting a spinning machine.

[0007]

In order to achieve the above-mentioned object, in the invention described in claim 1, when the spinning machine is started, the diagonal loop winding is formed prior to the normal winding, and then the normal chase length is set. At the time of winding, the ring rail is moved up and down at least once at a predetermined speed higher than the lifting speed during normal winding, and then the ring rail is moved up and down at the lifting speed during normal winding.

According to a second aspect of the invention, in the first aspect of the invention, the ascending / descending speed at the time of ascending / descending at a high speed is changed according to the spinning conditions. According to a third aspect of the present invention, in the first or second aspect of the invention, the number of times of raising and lowering during the high speed raising and lowering is changed according to spinning conditions.

According to a fourth aspect of the present invention, in a spinning machine equipped with a lifting device capable of raising and lowering a ring rail independently of a spindle, a drive motor for driving the lifting device and a ring rail which is normally attached to the ring rail when the spinning machine is started. Prior to winding, the hoisting motion is performed to form an oblique loop winding, and when winding with a normal chase length, the ring rail is rotated a predetermined number of times at a higher speed than the normal lifting speed. After elevating and lowering, the control means for controlling the drive motor to elevate and lower the ring rail at a normal ascending / descending speed.

According to a fifth aspect of the invention, in the invention of the fourth aspect, the control means can change at least one of the ascending / descending speed and the number of times of ascending / descending during the high speed ascending / descending.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the invention, the control means sets the change timing from the high speed lifting / lowering to the normal winding up / down It can be set arbitrarily.

According to the first aspect of the present invention, when the spinning machine is started, the diagonal loop winding is formed prior to the normal winding, and then the winding is performed with the normal chase length. When performing winding with a normal chase length, first, the ring rail is moved up and down at least once at a predetermined speed higher than the lifting speed during normal winding, and then the lifting speed during normal winding is entered.
Therefore, even when the tip of the diagonal loop winding is separated from the surface of the bobbin or the snarl remains on the yarn, the yarn is quickly pressed against the surface of the bobbin by the ring rail moving up and down at high speed. As a result, when the spindle rotates at a high speed, the tip of the oblique loop winding and the snare are prevented from coming into contact with the yarn being spun and causing yarn breakage.

According to a second aspect of the present invention, in the first aspect of the invention, the ascending / descending speed at the time of ascending / descending at a high speed is changed according to the spinning conditions. As a result, the tip of the diagonal loop winding and the snare that have separated from the bobbin are more reliably and quickly pressed onto the surface of the bobbin before thread breakage occurs.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the number of times of raising and lowering at the time of raising and lowering at a high speed is changed according to spinning conditions. As a result, the ascending / descending operation is performed at a high speed as many times as necessary to press the tip of the diagonal loop winding or snare separated from the bobbin onto the surface of the bobbin.

According to the invention described in claim 4, the ring rail can be raised and lowered independently of the spindle by the lifting device, and the lifting device is driven by the drive motor. The drive motor is controlled by the control means, and the ring rail makes a predetermined up-and-down motion according to the operation of the drive motor. At the start of the spinning machine, the ring rail normally moves up and down to form an oblique loop winding prior to winding. After that, winding is performed with a normal chase length, but the ring rail is first moved up and down a predetermined number of times at a predetermined speed higher than the lifting speed during normal winding, and then decelerated to the lifting speed during normal winding. . After that, the lifting motion of the ring rail at the lifting speed during normal winding is continued.

According to a fifth aspect of the invention, in the invention according to the fourth aspect, the ascending / descending speed and the number of ascending / descending during the high speed ascending / descending movement of the ring rail are set by the setting means. The drive motor is controlled by the control means so as to cause the ring rail to move up and down under the condition set by the setting means.

According to a sixth aspect of the present invention, in the invention according to the fourth or fifth aspect, the timing for changing the ring rail from a high speed ascending / descending to a normal ascending / descending ascending / descending speed is set by a setting means. Since it is possible, it is set at an appropriate time corresponding to the spinning conditions.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in a ring spinning machine equipped with a lifting device capable of moving a ring rail up and down independently of a spindle will be described with reference to FIGS.
It will be described according to. As shown in FIG. 3, the rotary shaft 2 of the front roller 1 forming the draft part is connected to the driving shaft 4 via the gear train 3. The driving shaft 4 is rotationally driven by a main motor 6 as a driving means via a belt transmission mechanism 5. The spindle 7 is a chin pulley 8 fixed to the driving shaft 4.
It is adapted to be rotationally driven via a spindle tape 9 which is wound between and. That is, the draft part is also driven by the main motor 6 that drives the spindle 7. The draft part and the spindle 7 are arranged on both the left and right sides of the spinning machine base, but only one side is shown in FIG.

The lifting device raises and lowers the ring rail 11 and the lappet angle 12 via the line shaft 10. A line shaft 10 (only one side is shown) is rotatably arranged along the longitudinal direction of a spindle rail (not shown), that is, parallel to the driving shaft 4. Elevating units 13 for raising and lowering the ring rail 11 and the lappet angle 12 are arranged on the line shaft 10 at predetermined intervals (only one unit is shown). The elevating unit 13 is a nut body that is screwed to a screw gear 14 that is integrally rotatably fitted and fixed to the line shaft 10 and a screw portion 16 formed below a poker pillar 15 that supports the ring rail 11 or the lappet angle 12. 17 and 17. Poker pillar 1
5 is movably supported in a vertical direction on a machine frame (not shown). The nut body 17 is rotatably supported at a predetermined height position of the machine frame via a bracket (not shown), and a screw gear 18 meshing with each other is integrally formed on the outer periphery of the nut body 17. The screw gear 18 of the nut body 17 corresponding to the poker pillar 15 supporting the ring rail 11 is
It is also meshed with the screw gear 14.

Rotating shaft 1 constituting a line shaft drive system
9 is rotatably arranged in parallel with both line shafts 10, and a gear 20 is fitted and fixed to an intermediate portion of a rotary shaft 19. The gear 20 meshes with a gear 23 that is fitted and fixed to an output shaft 22 of a servo motor 21 as a drive motor that drives the lifting device. A rotary shaft 24 is arranged at a position corresponding to the end of the line shaft 10 so as to be orthogonal to the line shaft 10. Worms 26 that mesh with worm wheels 25 that are fitted and fixed to the ends of the line shaft 10 are fitted and fixed to both ends of the rotary shaft 24. A bevel gear 27 is fitted and fixed to the first end portion of the rotating shaft 19, and the bevel gear 27 is meshed with a bevel gear 28 which is fitted and fixed to an intermediate portion of the rotating shaft 24. Then, the rotary shaft 19 is driven to rotate forward / reversely as the servo motor 21 rotates normally / reversely, and the rotary shaft 24 is driven to rotate normally / reversely. The line shaft 10 rotates normally / reversely to rotate normally / reversely. Driven. Line shaft 10, lifting unit 1
3. A lifting device for raising and lowering the ring rail 11 and the lappet angle 12 is constituted by the servo motor 21 and the line shaft drive system. Note that these configurations are basically the same as the device disclosed in, for example, Japanese Utility Model Publication No. 3-48223.

The end of the rotary shaft 29 through which the rotation of the driving shaft 4 is transmitted through the gear train, and the rotary shaft 19
A belt transmission mechanism 30 is arranged between the and. The belt transmission mechanism 30 is rotatably supported by the rotation shaft 19 and includes a toothed pulley 32 that can rotate integrally with the rotation shaft 19 via an electromagnetic clutch 31, and the belt transmission mechanism 30 rotates the draft part and the spindle drive system. Is transmitted to the line shaft drive system as rotation in the direction of lowering the ring rail 11. The electromagnetic clutch 31 connects the toothed pulley 32 and the rotary shaft 19 in an excited state. The belt transmission mechanism 30 is capable of transmitting the rotation of the spindle drive system to the line shaft drive system during inertial rotation during a power failure. That is, the lifting device can be driven by the servo motor 21 independently of the spindle 7.

A control device 3 serving as control means
3 is connected to the main motor 6 via the inverter 34,
It is connected to the servo motor 21 via the servo driver 35. A rotary encoder 36 is attached to the servo driver 35. The rotary encoder 36 plays a role of a position detecting means of the ring rail 11 and an ascending / descending speed detecting means. A sensor 38 that outputs a pulse signal in response to the rotation of the driving shaft 4 is provided near the gear 37 fitted to the end of the driving shaft 4. The sensor 38 plays a role of detecting the rotation speed of the spindle 7.

As shown in FIG. 4, the control device 33 includes a central processing unit (hereinafter referred to as CPU) 39 as a calculation means. The control device 33 includes a program memory 40 as a storage unit, a work memory 41, an input / output interface 42, a main motor drive circuit 43, and a servo motor drive circuit 44. The CPU 39 is connected via an input / output interface 42 to the rotary encoder 36, the sensor 38, and the input device 45 as setting means. C
The PU 39 is connected to the inverter 34 via the input / output interface 42 and the main motor drive circuit 43, and is connected to the servo driver 35 via the input / output interface 42 and the servo motor drive circuit 44.

The CPU 39 operates based on predetermined program data stored in the program memory 40. The program memory 40 is a read-only memory (ROM), and stores the program data and various data necessary for its execution. The work memory 41 is composed of a readable and rewritable memory (RAM), and temporarily stores data input by the input device 45, a calculation processing result in the CPU 39, and the like.

The program memory 40 stores a shift control program for the main motor 4 and the servo motor 21 from the time the machine is started up to the time when the machine is stopped due to a full pipe. In the shift control program, the speed change is represented as a reference pattern, and the parameters of the reference pattern are set by the input device 45. The operating conditions of the lifting device include spinning condition data such as the spinning length, the lift length, and the chase length input by the input device 45, and the lifting and lowering conditions of the ring rail 11 for forming the oblique loop winding that is usually performed before winding. And the spindle rotation speed at that time and the set values such as the ascending / descending speed of the ring rail and the number of ascending / descending of the ring rail during high-speed winding with a normal chase length.

Each parameter set by the input device 45 is stored in the working memory 41, and the CPU 39
Outputs a command signal for drive control of the main motor 6 and the servo motor 21 based on the program data of the program memory 40, each parameter stored in the working memory 41, and the like.

The CPU 39 calculates the position and the ascending / descending speed of the ring rail 11 based on the output signal from the rotary encoder 36. Then, the CPU 39 calculates the reversal timing of the ring rail 11 which is the lifting condition set by the input device 45 based on the ascending / descending speed and the position of the ring rail 11, and drives and controls the servo motor 21 via the servo driver 35. It has become.

Next, the operation of the device configured as described above will be described. Prior to the operation of the spinning machine, each parameter required for the operation is set by the input device 45 as a predetermined value corresponding to the spinning conditions such as the spun fiber type and the spinning number. For example, the time Ts1 from the start of the movement of the ring rail 11 to the start of the rotation of the spindle 7 is set to 2 to 3 seconds, and the stop time Ts2 of the ring rail 11 at a predetermined position is set to about 0.5 seconds. It In addition, the ring rail 11 when moving up and down at high speed
The appropriate values for the ascending / descending speed and the ascending / descending frequency may differ depending on the spun fiber type and the spun count. However, the hoisting speed is about several times the hoisting speed during normal winding, and the hoisting frequency is 1 to 2 times.
It is set to about each time. In addition, the ring rail 11
The high-speed lifting end position of is set.

At the start of the operation of the spinning machine, the end of the yarn Y from the front roller 1 through the traveler 46 to the spindle 7 is wound around the tail yarn winding portion 47 provided at the lower portion of the spindle 7. Further, the ring rail 11 is arranged at the normal winding start position H0 corresponding to the lower part of the bobbin B. Then, when the operation is started from that state, the diagonal loop winding L is formed prior to the normal winding, and then the ascending / descending movement of the ring rail 11 at the normal chase length is started from the normal winding start position H0. To be done.

As shown in FIG. 1, when the spinning machine is started, the ring rail 11 is started to be raised while the rotation of the spindle 7 is stopped. The ring rail 11 is raised to a predetermined position Hs forming the diagonal loop winding L, stopped at the predetermined position Hs for a predetermined time Ts2, and then lowered to the normal winding start position H0. The lowering speed of the ring rail 11 is increased during the lowering. Further, the spindle 7 starts to rotate at a predetermined acceleration before the ring rail 11 starts to descend from the predetermined position Hs.

The ring rail 11 is usually at the winding start position H.
After reversing at 0, it goes up and down with a normal chase length. When carrying out the lifting / lowering motion with the normal chase length, the ring rail 1 is faster than the lifting / lowering speed during the normal winding in the initial stage.
1 is lifted and lowered, and the lifting speed is changed to the lifting speed at the time of normal winding after the preset number of times of lifting is completed. In this embodiment, the high speed ascent / descent is performed 1.5 times, and the ascending / descending speed is changed to the normal speed during the final high speed descending.

The ascending speed of the ring rail 11 to the predetermined position Hs and the descending speed of the ring rail 11 to the normal winding start position H0 are faster than the ascending / descending speed of the ring rail 11 when performing a predetermined chase motion. Then, while the ring rail 11 descends from the normal winding start position H0 to the normal winding start position H0 through the predetermined position Hs again, the yarn Y is wound around the bobbin B about once and a half times, as shown in FIG. An oblique loop winding L is formed on the.

The diagonal loop winding L formed prior to the normal winding is unbalanced due to the centrifugal force acting on the diagonal loop winding L, the weight of the yarn Y, the frictional force with the bobbin B, and the like, as shown in FIG. As shown in, the tip of the diagonal loop winding L may separate from the surface of the bobbin B. In this case, the tip of the loop winding L rotates at a position away from the surface of the bobbin B as the spindle 7 rotates. With the rotation speed of the spindle 7 being high, the tip of the loop winding L is spinning the yarn Y.
If it comes into contact with it, it will cause thread breakage. If the snare formed when the ring rail 11 is raised to the predetermined position Hs is not eliminated when the ring rail 11 is lowered, the spinning speed of the spindle 7 is high and the snare is being spun. Contact with Y causes thread breakage.
Therefore, it is necessary to press the tip end portion or snare of the oblique loop winding L separated from the bobbin B onto the surface of the bobbin B with the winding yarn Y before the spindle 7 rotates at a high speed.

The ring rail 11 is moved at a normal ascending / descending speed during spinning.
When the screw is raised or lowered, the tip of the slanted loop winding L or snare separated from the surface of the bobbin B before the spindle 7 rotates at high speed may not be able to be pressed onto the surface of the bobbin B, and thread breakage may occur. To do. However, by raising and lowering the ring rail 11 at a high speed, the tip of the diagonal loop winding L and snare separated from the surface of the bobbin B before the rotation of the spindle 7 becomes high in speed, as shown in FIG. Is pressed down securely. As a result, even if the diagonal loop winding L is formed prior to the normal winding, the yarn breakage is less likely to occur.

This embodiment has the following effects. (A) When winding with a normal chase length, after the ring rail 11 is lifted up or down at least once at a predetermined speed higher than the lifting speed during normal winding, the ring rail 11 is lifted at the normal lifting speed. Moved up and down. Before the spindle 7 is rotated at high speed, the tip of the diagonal loop winding L and the snare are pressed onto the surface of the bobbin B by the take-up yarn, which causes the tip of the diagonal loop winding L to separate from the bobbin surface. It is possible to prevent thread breakage.

(B) Since the ascending / descending speed at the time of high speed ascending / descending is set in accordance with the spinning condition, the tip end of the oblique loop winding L and the snare are surely wound before the spindle 7 is rotated at a high speed. Thus, the bobbin B can be pressed down on the surface.

(C) Since the number of times of ascending and descending at high speed is set in accordance with the spinning conditions, the tip portion of the diagonal loop winding L and the snare are set to the spindle 7 without performing unnecessary high speed ascending and descending.
Can be pressed onto the surface of the bobbin B by the take-up yarn before it becomes high speed rotation.

(D) In order to increase the descending speed while the ring rail 11 is descending when forming the diagonal loop winding L,
The yarn tension becomes large, which helps to eliminate snare and put the traveler 46 in a proper posture, and yarn breakage is less likely to occur.

(E) Since the change timing of the ring rail 11 from the high speed ascending / descending to the normal ascending / descending speed can be arbitrarily set by the setting means (input device 45), an appropriate position corresponding to the spinning conditions can be obtained. Can shift from normal to vertical movement.

(F) The raising and lowering speed and the number of raising and lowering when the ring rail 11 is raised and lowered at high speed are set (changed) by the setting means.
Because it is possible, it is possible to easily respond to changes in spinning conditions. (G) After forming the diagonal loop winding L, the parameters that determine the conditions for high-speed raising and lowering of the ring rail 11 at the normal chase length are spinning fiber types, spinning numbers, and types of travelers used. It is set as a predetermined value corresponding to the output condition. Therefore, the occurrence of yarn breakage is further suppressed.

(H) Since the rotation control condition of the spindle 7 is set by the input device 45, it is easy to deal with different spinning conditions. (I) Since the position of the ring rail 11 at the time of starting the spinning machine is set to the normal winding start position H0, the moving distance to the predetermined position Hs is compared with the moving distance from the position corresponding to the tail winding portion 47. It is short and does not easily break.

The present invention is not limited to the above embodiment, but may be embodied as follows, for example. (1) Ring rail 1 is the time when the normal chase length changes from high-speed lifting to normal lifting
No. 1 is not only in the middle of descending, but may be any of the descending start position, the descending end position, and the ascending.

(2) The raising and lowering speeds and the number of raising and lowering when the ring rail 11 is raised and lowered at the normal chase length are set in advance without changing according to the spinning conditions such as the spinning fiber type and spinning number. It may be performed under certain conditions. It is preferable to set the number of times of lifting up and down a little. In this case, even if the spinning condition is changed, it is not necessary to change the lifting condition of the ring rail 11.

(3) When forming the diagonal loop winding L, as shown in FIG. 5, the ring rail 11 is raised while the spindle 7 is rotated at a constant rotational speed lower than that at the time of normal spinning. The normal acceleration of the spindle 7 may be started while the rail 11 is stopped at the predetermined position Hs. When to start the normal acceleration of the spindle 7,
It may be at the time when the ring rail 11 starts descending or after the descent is started. Ring rail 11 is at the predetermined position H
The rotation speed of the spindle 7 when rising to s is not limited to a constant low speed, but may be an accelerating state or a decelerating state as long as it is a predetermined speed or less. The rotation speed of the spindle 7 is 1
It is set to a constant speed of 000 rpm or less, preferably several hundred rpm or less.

When the ring 7 is raised to the predetermined position Hs for performing the diagonal loop winding L and the spindle 7 is stopped, the yarn Y is easily detached from the traveler 46 and the yarn Y caused by the yarn detachment occurs. A break occurs. But,
When the ring rail 11 is raised to the predetermined position Hs while the spindle 7 is rotating, tension is applied to the yarn Y to hold the traveler 46, and the yarn Y is held even if the ring rail 11 is raised. It becomes difficult for the thread to come off from the traveler 46, and thread breakage due to thread breakage is prevented.

(4) Instead of setting only the predetermined parameters of the speed change reference pattern of the main motor 6 and the lifting reference pattern of the ring rail 11 stored in the program memory 40 with the input device 45, the input device 45 is used. It is also possible to set all of the shift pattern 6 and the lifting pattern of the ring rail 11.

(5) A plurality of shift patterns of the main motor 6 and rising and falling patterns of the ring rail 11 corresponding to the spinning conditions are stored in the program memory 40, respectively, and an appropriate pattern is selected by the input device 45. You may make it set operating conditions. In this case, it is possible to save the trouble of inputting the numerical values of the parameters of the shift pattern and the elevation pattern by the input device 45 one by one when setting the operating conditions. Alternatively, a battery-backed RAM may be used as the work memory 41, and a plurality of shift patterns and elevation patterns corresponding to spinning conditions may be stored in the RAM. In this case, it becomes easy to add a shift pattern and a lifting pattern for different spinning conditions.

(6) The position of the ring rail 11 when the spinning machine is activated may be a position corresponding to the tail thread winding portion 47 below the normal winding start position H0. That is, the ring rail 11 is stopped at a position corresponding to the tail thread winding portion 47 when the spinning machine for doffing is stopped due to the full pipe.

(7) The spindle 7 may be driven by a tangential belt. (8) It may be applied to a ring twisting machine.

The inventions other than those described in the claims which can be grasped from the embodiment and the modified examples will be described below together with their effects. (1) In the invention according to any one of claims 1 to 3, the ring rail is in a state in which tension is applied to the thread engaging the spindle with the traveler and the spindle is rotated at a lower speed than during normal winding. Is raised to a predetermined position for oblique loop winding, and then normal acceleration of the spindle is started.
In this case, when the ring rail is raised to a predetermined position to form the diagonal loop winding, the yarn is prevented from coming off the traveler, and the yarn breakage due to the yarn coming off is prevented.

(2) In the invention according to any one of claims 4 to 6, a storage device (storage means) provided in the control means is provided with a spindle shift pattern corresponding to a plurality of spinning conditions and a ring rail elevating / lowering pattern. The patterns are stored respectively, and the necessary spindle shift pattern and ring rail elevating pattern can be set by the setting means. In this case, it is possible to save the trouble of inputting the numerical values of the parameters of the spindle shift pattern and the ring rail lifting pattern by the setting means.

[0052]

As described in detail above, claims 1 to 6 are provided.
According to the invention described in (1), it is possible to reduce the occurrence of yarn breakage when normal winding is performed after forming the diagonal loop winding at the start of the spinning machine.

According to the second aspect of the present invention, since the ascending / descending speed at the time of ascending / descending at a high speed is set in accordance with the spinning condition, the tip end portion of the oblique loop winding and the snare are surely set before the spindle rotates at a high speed. It can be pressed onto the surface of the bobbin by the winding thread.

According to the third aspect of the present invention, since the number of times of ascending and descending at the time of high speed ascending / descending is set in accordance with the spinning conditions, the tip end portion of the oblique loop winding and the snare are not performed without performing unnecessary high speed ascending / descending. The bobbin can be pressed onto the surface of the bobbin by the take-up thread before the spindle rotates at high speed.

According to the fifth aspect of the present invention, since the ascending / descending speed and the number of ascending / descending of the ring rail during high speed ascending / descending can be changed by the setting means, the spinning conditions can be easily changed. According to the invention as set forth in claim 6, the timing for changing from the high speed ascent / descent of the ring rail to the ascending / descending speed at the time of normal winding can be arbitrarily set by the setting means, so that from a proper position corresponding to the spinning conditions. It is possible to shift to normal lifting exercises.

[Brief description of drawings]

FIG. 1 is a diagram of ring rail position and spindle rotation speed.

FIG. 2 is a schematic diagram showing a winding state of a yarn.

FIG. 3 is a schematic perspective view of a drive system.

FIG. 4 is a block diagram showing an electrical configuration of a control device.

FIG. 5 is a diagram of a ring rail position and a spindle rotation speed of a modified example.

FIG. 6A is a diagram of a ring rail position and a spindle rotation speed in a conventional example, and FIG. 6B is a schematic view showing a winding state of a yarn.

7 (a) and 7 (b) are schematic diagrams showing a winding state of a yarn in a state where an oblique loop winding is separated, and FIG. 7 (c) is a schematic diagram showing a winding state of a yarn when a snare is generated.

[Explanation of symbols]

7 ... Spindle, 10 ... Line shaft which constitutes a lifting device, 13 ... Elevating unit, 11 ... Ring rail, 21 ... Servo motor as a drive motor, 3
3 ... Control device as control means, 45 ... Input device as setting means, 46 ... Traveler, L ... Oblique loop winding, Y ...
yarn.

Claims (6)

[Claims] 1. When starting the spinning machine, after forming an oblique loop winding prior to the normal winding and then performing winding with a normal chase length, the ring rail is provided with a predetermined speed higher than the ascending / descending speed during normal winding. A method of raising and lowering a ring rail when starting a spinning machine, in which the ring rail is raised and lowered at a speed higher than that of the normal winding after being raised and lowered at least once. 2. The method of raising and lowering a ring rail at start-up of a spinning machine according to claim 1, wherein the ascending / descending speed at the time of high speed ascending / descending is changed according to spinning conditions. 3. The method of raising and lowering a ring rail at start-up of a spinning machine according to claim 1 or 2, wherein the number of times of raising and lowering at the time of high-speed raising and lowering is changed according to spinning conditions. 4. A spinning machine equipped with a lifting device capable of raising and lowering a ring rail independently of a spindle, and a drive motor for driving the lifting device, and an oblique loop winding prior to normal winding on the ring rail when the spinning machine is started. In addition to raising and lowering motions to form the ring, when performing winding with a normal chase length, after raising and lowering the ring rail a predetermined number of times faster than the raising and lowering speed during normal winding, the normal winding is performed. A lifting and lowering control device for a ring rail of a spinning machine, comprising: a control means for controlling the drive motor so as to lift and lower the ring rail at a lifting speed at the time of taking. 5. The lifting / lowering control device for a ring rail of a spinning machine according to claim 4, wherein the control means is capable of changing at least one of the lifting speed and the number of times of lifting during the high speed lifting. 6. The ring rail of a spinning machine according to claim 4 or 5, wherein the control means can arbitrarily set the change timing of the ascending / descending speed at the time of the high speed ascending / descending to the ascending / descending speed by the setting means. Lift control device.