JPH0689490B2 - Spinning ring and its control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spinning ring having a built-in ring motor and a control device therefor.

[Conventional technology and its problems]

BACKGROUND ART Conventionally, various spinning rings for spinning have been announced or tried for spinning and twisting devices such as a ring spinning machine, a ring twisting machine, and a ring draw twisting machine.

Most of these known rotating rings are positive rotating rings using an external power transmission mechanism such as compressed air or friction pulleys, or negative rotating rings using the friction pressure of the traveler as torque.

Further, there is also proposed a rotary ring in which a ring motor is built in the rotary ring to electrically rotate a ring rotating body (Japanese Patent Laid-Open No. 61-152835). However, according to this, since it is an outer rotor type motor structure, it becomes bulky due to the volume of the windings and iron cores that make up the armature and rotor, and the outer diameter is larger than that of the rotating ring of other drive systems described above. Since the size becomes large and the pitch with the machine-adjacent weight needs to be considerably increased, there is a disadvantage that the number of operating weights of the spinning machine in the same space is significantly reduced.

In addition, the spindle speed of a spinning machine equipped with a rotary ring of a known method has already reached 20,000 to 22,000 rpm, and
Currently, a test of 10,000 rotations is also carried out, and in order to obtain the same production efficiency with the reduced number of spindles using the above-mentioned motorized rotary ring, it is necessary to rotate the spindle at about 40,000 to 60,000 rpm. However, there are problems in mechanical structure, vibration, electric power cost, yarn quality, operation management, etc., which is not realistic.

On the other hand, as a means for coping with a wide range of fluctuations in spinning tension during the entire spinning process, in the conventional spinning machine, from the start of winding the empty bobbin to 2-3 minutes, from 8-9 minutes to full thread. In the ball separation section where breaks occur frequently, the transmission reduces the spindle rotation speed by 10 to 20% from the maximum rotation speed of the middle balls, adopts the cushion start method at the start, etc.
Since it was dealt with by a mechanical adjusting means, it was unavoidable that the productivity was reduced in the section where the yarn breakage occurred frequently.

In the case of thrust bearings or air-bearing depolarizing rotary rings that use the frictional pressure of the traveler as torque, the rotational torque depends on the stretch length and the ring rail in relation to the weight of the ring rotor and the rotational torque due to the frictional pressure of the traveler. The weight of the ring rotating body is unique to the ring, regardless of the change in the spinning position, the vertical movement of the ring rail including the building motion, the shift between the chase of the traveler, and other factors that increase or decrease the spinning tension. Therefore, when the upward lifting component of the spinning tension exceeds the weight of the ring rotating body, the rotating body rotates at high speed and gradually increases without a brake device, and the bearing part becomes an air bearing and it takes an extremely short time. Draw a "J curve" and rotate at the same speed as the traveler.

If the ring rotator speeds up once with the traveler,
Although the rotation speed of the traveler changes due to the change in the winding speed between the chase, the ring rotor does not shift due to inertia due to the same speed as the maximum rotation speed of the traveler.
The difference π (D−d) between when winding the bobbin diameter d at the top of the chase and when winding the outer diameter D of the yarn at the bottom of the chase reaches about twice, and the ring rotation sometimes exceeds the traveler rotation. The spinning tension fluctuates sharply between positive and negative.

As a result, the spun yarn passing through the traveler is repeatedly subjected to a severe shock, and particularly in the case of the synthetic fiber yarn, the quality of the melted yarn due to the segokinep or the breaking of constituent fibers and frictional heat, the yellowing weak yarn, and the like, and It causes fluff and yarn breakage.

For this reason, it is necessary to constantly lower the rotation speed of the ring rotating body than that of the traveler, and for that purpose, frictional resistance is necessarily required between the two. However, if the spinning tension generated by this frictional resistance exceeds the strength of the yarn, the yarn will break, so with the conventional rotating ring that cannot control the rotation speed (rotation speed) of the ring rotating body, the rotation speed increase limit of the spindle is limited. Remained at 20 to 30%, hindering the speeding up of spinning machines.

Further, as a depolarizing rotating ring that prevents the ring rotating body and the traveler from moving at the same speed, a rotating ring with a friction brake device (Japanese Patent Application Laid-Open No. 57-34927) and a rotating ring with a magnetic brake device by eddy current (Japanese Patent Application No. Sho 62-62 -255456), etc., each of which has an effect, but the former has a problem of abrasion of the brake shoes, and the latter has a different magnet magnetic force when the spun yarn type or count changes significantly. There was an inconvenience that it needed to be replaced.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an inner rotor type ring motor built-in spinning ring that can be made compact.

Another object of the present invention is to provide a control device capable of performing spinning at high speed without causing yarn breakage by using a spinning rotary ring having a built-in ring motor.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the invention of claim 1 is a spinning ring for spinning, comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism. A ring motor for positively rotating the ring rotating body, is provided between the ring rotating body and the ring rotating body, and the ring motor is provided substantially at the center of the outer peripheral surface of the ring rotating body in the axial direction. A rotor composed of a permanent magnet, and an armature which is arranged substantially at the center of the inner peripheral surface of the holder in the axial direction and faces the rotor with a predetermined gap held by the bearing mechanism. Configured as a feature.

According to a second aspect of the present invention, there is provided a spinning rotation ring control device having a built-in ring motor, the tension detecting means detecting a tension of the spun yarn, a setting means for setting an optimum tension of the spun yarn, and Comparing means for comparing the tension detected by the tension detecting means with the optimum tension set by the setting means, and of the ring motor so that the tension of the spun yarn approaches the optimum tension according to the output of the comparing means. And a control means for controlling the number of revolutions.

According to a third aspect of the present invention, there is provided a spinning rotation control device having a ring motor built-in, comprising: tension detecting means for detecting a tension of spun yarn; setting means for setting an optimum tension of the spun yarn; Judging means for judging whether or not the tension detected by the tension detecting means is within an allowable range with respect to the optimum tension set by the setting means, and the ring motor so that the tension of the spun yarn is within the allowable range. And a control means for controlling the number of rotations.

According to a fourth aspect of the present invention, there is provided a control device for a spinning rotary ring having a built-in ring motor, comprising tension detecting means for detecting tension of spun yarn, setting means for setting an optimum tension of spun yarn, and Judgment means for judging whether or not the tension detected by the tension detection means is within an allowable range with respect to the optimum tension set by the setting means, and the number of rotations of the spindle and the spinning ring for spinning is set to the stretch length or minute. Program means for setting the rotation speed to a predetermined rotation speed according to the ball ratio, and program control means for controlling the ring motor so that the rotation speed of the spinning ring for rotation becomes the rotation speed set by the program means. When the judgment means judges that the tension of the spun yarn exceeds the allowable range, the rotation speed of the ring motor is compensated so that the tension falls within the allowable range. It is a correction control unit that is configured as characterized.

According to a fifth aspect of the present invention, there is provided a control device for a spinning rotary ring having a built-in ring motor, wherein the number of revolutions of the spindle and the number of revolutions of the spinning rotary ring corresponding to the number of revolutions of the spindle are set to a stretch length or a distribution rate. And a program control means for controlling the ring motor so that the number of rotations of the spinning ring for spinning becomes the number of rotations set in the program means. Composed.

[Action]

The rotor and the armature constitute an inner rotor type ring motor, which is rotated by an electric signal or electric power from the outside, and its rotation speed (rotation speed) is controlled. This controls the number of rotations of the spinning ring for spinning.

The tension detecting means detects the tension of the spun yarn, the comparing means compares the optimum tension of the spun yarn set by the setting means,
The control means controls the rotational speed of the ring motor so that the tension of the spun yarn approaches the optimum tension according to the output of the comparison means.

The determining means determines whether the tension detected by the tension detecting means is within the allowable range for the optimum tension set by the setting means. In this case, the control means
The rotation speed of the ring motor is controlled so that the tension of the spun yarn is within the allowable range.

The program means sets the number of rotations of the spindle and the spinning rotary ring so as to be a number of rotations determined in advance according to the stretch length or the splitting ratio. The program control means controls the rotation speed of the ring motor or the rotation speed of the ring motor and the spindle based on the contents of the program means.

The correction control means corrects the rotational speed of the ring motor so that the tension falls within the allowable range when the determining means determines that the tension of the spun yarn exceeds the allowable range.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional front view of a rotating ring 1 according to the present invention.

The rotating ring 1 includes a ring rotor 2 in which a flange rotor 3 having a ring flange 4 and a lower rotor 5 are integrated, a holder 8 for rotatably supporting the ring rotor 2 via bearings 6 and 7, and , The rotor 10 made of a permanent magnet provided substantially at the center of the outer peripheral surface of the ring rotating body 2 and the center of the inner peripheral surface of the holder 8 in the axial direction and facing each other on the outer peripheral side of the rotor 10. Armature in position
It is composed of a ring motor 9 composed of 11. The bearings 6 and 7 are ball bearings in the illustrated example, but may be other rolling bearings, or other material shapes such as wear resistant, heat resistant, low friction coefficient super engineering plastics and ceramics.

The ring motor 9 is composed of, for example, a DC motor or a synchronous motor, and the current supplied to it is
It rotates at a speed according to the voltage or frequency.

An upper dustproof cover 21 is attached to the outer circumference of the flange rotor 3, and a lower dustproof cover 22 is attached to the lower inner circumference of the holder 8. A retaining nut 24 for retaining the bearing 7 is screwed into the screw 23 provided on the outer peripheral surface of the lower end of the lower rotor 5, and the disc-shaped collar portion 24a provided on the retaining nut 24 has an upper surface, A detection plate 25 is attached in which the half circumference in the circumferential direction is black and the remaining half circumference is white. On the other hand, on the bearing casing 26 attached to the lower part of the holder 8, a reflection type photoelectric sensor 27 for detecting the black and white of the above-mentioned detection plate 25 to detect the rotation speed of the ring rotating body 2 is attached. There is. The ring rotating body 2
As a means for detecting the rotation speed of, a notch portion, an uneven portion,
A rotating body provided with a magnetic field generator and a photo interrupter,
Various known detecting means in combination with a micro switch, a magnetic sensor, etc. can be used.

In the figure, 28 and 28a are spacers made of a non-magnetic material, 29 is a coil case made of an insulator, 30 to 32 are retaining rings, 33 is a space adjusting ring, 34 is a collar for mounting the holder 8,
35 is a bolt for fixing the holder 8 to the ring rail 36, 41
Is a traveler, 42 is a bobbin, 43 is a tube yarn, and 44 is a spun yarn (balloon portion).

FIG. 2 is a view showing a changing state of the balloon and a spinning tension detecting mechanism due to a difference in stretch between the chase during use of the rotating ring 1.

A lappet rail 51 is horizontally mounted at a fixed height position with respect to the rotary ring 1, and a tension sensor for detecting the tension of the spun yarn 44 in the balloon is attached to the lappet rail 51. 52 is attached.

The tension sensor 52 is a load converter that detects a minute load such as a semiconductor type or a strain gauge type, and the horizontal component force of the balloon tension of the spun yarn 44 inserted through the ring-shaped snell wire 53 attached to the tip is electrically converted. Convert to signal. Based on this signal, the CPU (central processing unit) described later spun yarn between the contact point PS with the snell wire 53 and the nip point PN which is the contact point with the front roller 54.
The upper tension of 44 is calculated and obtained.

Note that the lappet rails 51 are usually provided with lappets for each weight, but in the present embodiment, the above-mentioned tension sensors 52 are provided in total for one spinning machine (400 to 1000 weights). The tension sensor 52
The average value of the tension detected by is used.

Further, as shown by a chain line in FIG. 2, a tension sensor 52a for directly detecting the upper tension of the spun yarn 44 may be attached between the contact point PS and the nip point PN.

In FIG. 2, B is a chase, and A1 and A2 are balloon stretches at the lowermost position or the uppermost position of the chase B, respectively.

Although not shown in FIG. 2, as a means for detecting the vertical position of the lappet rail 51 and the ring rail 36, it is attached to the rack extending over the lappet rail 51 and the ring rail 36, and the ring rail 36. A lappet rail position detector 61 and a ring rail position detector 62 each including a pinion gear that meshes with a rack and an encoder that outputs a pulse according to the rotational angle position of the pinion gear are provided. The coin separation position is detected from the absolute position of the ring rail 36 with respect to the bobbin 42 detected by the ring rail position detector 6, and the relative position between both rails is detected from the relative position of both rails detected by both position detectors 61 and 62. The vertical distances, that is, the stretch lengths A1 and A2, are detected. As will be described later, the spindle rotation and the spindle rotation according to each splitting position of the tube thread 43 with the full bobbin position set to 1.0 and the empty bobbin winding start position set to 0 are described below. Adjustment control of ring rotation is performed.

FIG. 3 is a block diagram of the control device 70 according to the present invention.

The CPU 71 is composed of a microcomputer, an appropriate interface circuit, etc., performs various calculations based on the input signals, processes and transfers various data, and various control signals and image signals to each unit. Is output.

The RAM 72 temporarily stores data and programs.

The ROM 73 or an external storage 77 such as a floppy disk or a hard disk stores a spinning program for all spinning processes set for each kind number of the various types of spinning yarns 44. The spinning program is based on the appropriate spinning tension range of each spun yarn 44 and the splitting ratio of the tube yarn 43 formed on the bobbin 42.
It is data of standard rotation speeds of a predetermined spindle SP and rotating ring 1. ROM73 or external memory 77 has a CPU
The program for executing the processing to be performed by 71, and other programs and data are stored.

The keyboard 74 sets the optimum tension TS of the spun yarn 44,
It is for inputting various data and commands to the CPU 71.

The display unit 75 is for displaying a calculation result by the CPU 71, a control state of each unit, and the like by a cathode ray tube or the like.

The printer 76 prints out various data and messages.

A large number of spindles SP are driven by a spindle drive motor 82 to drive a spindle 83, which is rotationally driven at an increased / decreased speed at a constant ratio with respect to the spindle.

The spindle drive motor 82 is driven while its rotation speed is controlled by a drive output unit 81 having an inverter and the like built therein. A rotation detector 84 for detecting the rotation speed of the main shaft 83 is attached, and the output of the rotation detector 84 is input to the CPU 71 via the detection unit 85.

The detection signal of the tension sensor 52 is input to the CPU 71 via the amplifier 86.

The ring motor 9 that rotationally drives the rotary ring 1 is driven by the drive output unit 87 while being controlled by receiving a command of its rotational speed from the CPU 71. The detection signal of the photoelectric sensor 27 provided in each rotating ring 1 is input to the CPU 71 via the detection unit 88.

A lappet rail position detector consisting of a linear scale attached to the lappet rail 51 and ring rail 36.
Detection signals from 61 and the ring rail position detector 62 are input to the CPU 71 via the detection units 90 and 89, respectively.

Next, a method of obtaining the tension of the spun yarn 44 from the detection signal of the tension sensor 52 will be described.

FIG. 7 is a diagram for explaining the relationship of the force applied to the spun yarn 44 by taking out the vicinity of the snell wire 53 of FIG.

In FIG. 7, it is assumed that the straight line (upper tension) connecting the nip point PN and the contact point PS is within the vertical plane P.
When the balloon of the spun yarn 44 is in the vertical plane P, T3H = T2 × Cos α (1) where α ... Spinning angle T1 ... Balloon tension T1V ... T1 one rotation average vertical vector T2 ... The relational expression of the horizontal component of the output force T3… T2 and T1V and the resultant force T3H… T3 is established.

Here, the balloon tension T1 actually slightly changes during one revolution of the traveler 41, but the one-turn average vertical vector T1V of the balloon tension T1 and the upper spinning tension T1.
Since 2 can be grasped as its average value, T1V can be used as the average vertical vector of the balloon tension T1.

Therefore, the upper spinning tension T2 can be obtained from the horizontal component T3H which is the detection signal of the tension sensor 52 by the relational expression of T2 = T3H × Secα (2).

Next, an example of control of the rotational speed of the rotary ring with respect to the spindle based on the spinning program stored in the ROM 73 or the external storage 77 will be described with reference to FIG.

In FIG. 6, the horizontal axis represents the time from the start of empty bobbin winding to the stop of full tube by the splitting ratio of the tube yarn 43 formed in the bobbin 42, and the vertical axis represents the rotation speed, in the case of the spindle SP. It is indicated by the number of revolutions per minute (RPM), and in the case of the rotating ring 1, the ratio of the number of revolutions per minute of the rotating ring 1 to the spindle SP.

The spinning program for spinning the spindle varies depending on the type number of the spun yarn and other spinning conditions and machine performance conditions, but the standard high-speed spinning machine equipped with an inverter, etc. ^In Fig. 6 which illustrates spinning from ^{s to} 60 ' ^s , from the start of empty bobbin winding to the vicinity of the third ball where the cup bottom is formed, while performing a cup build motion involving some movement including cushion start. , Spindle speed NS is increased in multiple steps within the tension range that does not lead to yarn breakage, and the spinning limit of machine base and yarn type is 25,000 to 3
It can rise up to 10,000 RPM.

In the example shown in FIG. 6, at this time, the spindle speed NS is increased from the start to the first speed (15,000 RPM) at once in 0 steps within 20 seconds and within 60 seconds to the second speed (20,000 times). RPM)
Speed up to the zone.

After that, although the limit varies depending on the machine performance etc., in the latest ultra high speed spinning machine, 3rd to 4th speed and multi-speed shifting program SC
As a result, the ring rotation speed (RPM) N is also linked to the spindle rotation speed spinning program SC in the H section where the cup bottom formation ends with the SC speed increasing gradient from the machine capacity limit of 25,000 to 30,000 RPM. In accordance with the speed increasing gradient of the rotary spinning program RC, the rotation speed N is controlled to maintain 90% of the spindle speed NS, and the rotation increase control is performed, and after the formation of the cup bottom that reaches 3-4 minutes, before the full pipe is reached. In the middle ball section where there is less yarn breakage due to spinning stability from 8.5 to 9 minutes, the spindle speed NS keeps the highest SC program, but the ring rotation spinning program RC curve of this section is 60 of the SC curve. %, The ring rotation N is made to correspond to the inter-chase traveler speed change, and the ring is automatically controlled between the chase speed change rotation ranges to reduce the fluctuation of the spinning tension and measure the stability.
The RC curve control is performed again to increase the ring speed N to about 90% of the spindle speed NS around 8.5 to 9 minutes, and the spindle speed NS is set to the maximum speed 2 after 9.5 minutes.
Full SC with SC curve control to decelerate to 1/3 to 2/3
After reaching the FB, the inertia of the rotating body such as the machine base and spindle SP, and the ring rotating body 2 is attenuated, and then the machine frame is switched off at the SC (a) point and the ring rail automatic descent is started. Wrapping), the bottom stop of the ring rail, bobbin winding and completion, and the SC control curve deceleration gradient up to the spindle stop (S-0), while the RC ring rotation control curve deceleration gradient has a spindle maximum rotation of, for example, 30,000 RPM. Then SC
(A) Point is 1/2, 15,000 RPM, RC at this time
Deceleration control is performed so that point (b) is 1/2 (7500RPM) or less of SC (a) and N = 0.5NS or less, and the time HS from point (a) to SC curve (S-0) RC deceleration so that the time HR from the RC curve (b) point to the ring rotation stop (R-0) is the same as the maximum HS or shorter than HS, and becomes "R-0" 4 earlier than "S-0". The gradient is controlled to be about one half of the SC deceleration gradient.

In FIG. 6, a curve SZ shows a spindle shift curve by a conventional two-speed shift spinning machine, and the difference between this curve SZ and the SC curve described above is a merit of increasing production.

Next, the operation of the control device 70 configured as described above will be described.

FIG. 4 is a block diagram showing the functions of the CPU 71 realized by the program stored in the ROM 73 or the external storage 77.

First, when spinning starts, the reading unit 107
The spinning program corresponding to the spun yarn is read out from 73 or the external memory 77, and the speed control unit 101 outputs a rotation speed command according to the spinning program to the drive output units 81 and 87.

The detection units 85 and 88 respectively detect the rotational speed of the spindle or the rotational speed of the rotary ring.

The stretch detector 106 is a lappet rail position detector 61.
And based on the detection signal of the ring rail position detector 62,
Find the stretch length.

Based on the detection signals from a large number of tension sensors 52, the tension detection unit 104 determines that the detection signals whose tension is less than or equal to a certain value are yarn breakages and excludes them, and obtains the average tension TC from the remaining significant data.

Of the optimum tensions set from the keyboard 74 and stored in the optimum tension storage unit 105, the optimum tension TS corresponding to the spun yarn
Is read.

The comparison / determination unit 103 uses the input average tension TC and optimum tension TS.
And the difference value TK is output, and the average tension TC is an allowable range defined by the upper limit tension TSU and the lower limit tension TSD.
Whether it is in EK or not, if not, the upper limit tension
Judgment is made as to whether TSU or lower limit tension TSD has been exceeded, and the judgment result is also output.

The speed control unit 101 outputs the rotation speed command in accordance with the spinning program, and performs the speed correction control by the correction control unit 102 based on the judgment result from the comparison judgment unit 103.

FIG. 5 is a flowchart showing speed control processing by the speed control unit 101 and the correction control unit 102.

First, it is determined whether the position of the ring rail is not the end position (step # 1), and if it is the end position, the control ends.

If it is not the end position, the average tension TC and the optimum tension TS are compared (step # 2). If they are equal to each other, the process returns to step # 1 without changing the rotation speeds of the spindle SP and the rotary ring 1.

When the average tension TC is larger than the optimum tension TS, it is determined whether the average tension TC exceeds the upper limit tension TSU (step # 3).

If YES in step # 3, in order to reduce the rotation speed of the spindle SP, a value obtained by subtracting a value obtained by multiplying the difference value between the average tension TC and the upper limit tension TSU by the gain gs from the current spindle rotation speed NS, Set as a new spindle speed NS (step # 5).

If the result is NO in step # 3, that is, if the average tension TC does not exceed the upper limit tension TSU and is within the allowable range EK, the rotation speed N of the rotating ring 1 has the upper limit ratio ru to the spindle rotation speed NS. It is determined whether or not the multiplied value is exceeded (step # 4).

If YES in step # 4, the process in step # 5 is executed. If no, in order to increase the rotation speed of the rotating ring 1, a value obtained by adding the value of the difference between the average tension TC and the optimum tension TS multiplied by the gain gr to the current ring rotation speed N is added. Set as ring speed N (step #
6).

If the average tension TC is smaller than the optimum tension TS in step # 2, it is determined whether the average tension TC is below the lower limit tension TSD (step # 7).

If YES in step # 7, in order to increase the rotation speed of the spindle SP, a value obtained by adding the value of the difference between the lower limit tension TSD and the average tension TC by the gain gs to the current spindle rotation speed NS, Set as a new spindle speed NS (step # 9).

If step # 7 is NO, that is, if the average tension TC is not below the lower limit tension TSD and is within the allowable range EK, the rotation speed N of the rotary ring 1 is the spindle rotation speed NS.
Is lower than the value obtained by multiplying by the lower limit ratio rd (step # 8).

If YES in step # 8, the process in step # 9 is executed. If no, in order to decrease the rotation speed of the rotating ring 1, the value obtained by subtracting the value obtained by multiplying the value of the difference between the optimum tension TS and the average tension TC by the gain gr from the current ring rotation speed N is calculated. It is set as the ring rotation speed N (step # 10).

In the above process, if an example of the numerical value is increased, for example, in the case of the spun yarn 44 of medium count, the optimum tension TS is 25 g and the allowable range is
EK is plus or minus 10 grams, that is, upper limit tension TSU is 3
5 grams, lower limit TSD is 15 grams.

By the above-described processing, the average tension TC of the spun yarn is controlled so as to approach the preset optimum tension TS. Also, for the spindle speed NS set in the spinning program,
Even if the ring speed N is increased, the average tension TC is the optimum tension TS.
If it does not fall within the allowable range EK of, spindle speed NS
Is changed so that the average tension TC is controlled to fall within the allowable range EK.

As a result, the average tension TC is controlled within the allowable range EK and the optimum tension TS throughout the entire spinning process.

According to the above-described embodiment, since it is only necessary to provide the rotating ring 1 with electric wiring, there is no need for piping or the like for using compressed air as in the conventional case, and the structure of the ring rail (machine base) is complicated. There is no change.

According to the above-described embodiment, at the beginning of winding the spun yarn 44 around the bobbin 42 and near the full tube, the spun yarn 44 can be spun at high speed in a short time without causing yarn breakage. Further, even in the middle, high-speed and stable spinning can be performed, so that the productivity is improved.

According to the above-described embodiment, the rotor 10 is provided substantially at the center of the outer peripheral surface of the ring rotating body 2 in the axial direction, and the armature 11 is substantially centered in the axial direction of the inner peripheral surface of the holder 8 and rotates. Child
Since they are provided at opposite positions on the outer peripheral side of 10, the outer diameter of the rotating ring 1 can be suppressed to a minimum, and the rotating ring 1 can be made compact and capable of stable rotation.
Therefore, the distance between the weights for mounting the rotating ring 1 is prevented from increasing, and the number of the rotating rings 1 installed in the same space does not decrease.

In the above-described embodiment, when the average tension TC exceeds the preset range, the ring rotation speed N may be increased or decreased so that the average tension TC is within the allowable range EK.

In the above-described embodiment, the rotation speed command from the control device 70 may output a plurality of identical outputs, and the outputs may be branched by the buffer in order to avoid the limitation of the fanout.

In the above-mentioned embodiment, when the rotation of the spindle SP and the rotating ring 1 by the spinning program is programmed to give the optimum tension to the spun yarn, or the fluctuation of the tension of the spun yarn is changed by another means. If it can be absorbed by the rotation speed control of the ring motor due to the tension of the spun yarn, the rotation speed control of the spindle SP and the rotary ring 1 can be performed only by the spinning program.

In the above-described embodiment, the spinning program is stored in the ROM 73 or the external storage 77, but the storage format may be a pure program that outputs the number of rotations according to the split coin ratio, or the split coin ratio. It may be a table that stores data on the number of revolutions or a change in the number of revolutions according to Also,
The spindle SP and the rotary ring 1 may have different spinning program formats and storage locations. For example, for the rotating ring 1, the data of the rotation ratio with respect to the spindle SP may be stored in a table.

In the above-described embodiment, when the spindle rotation speed NS is not overridden by the tension of the spun yarn 44, it is not necessary to set the spinning program according to the stretch length or the ball splitting ratio. It can be set according to the passage of time. In this case, the spinning program parameter is the elapsed time. The rotation speed control by the spinning program is performed by the rotating ring 1 having the above-described structure.
Not limited to this, for example, a DC motor may be incorporated.

In the above embodiment, the rotor 10 is cobalt-based,
A ring motor 9 having sufficient torque is constructed by using a vertically-aligned cylindrical piece of a thin permanent magnet that is radially oriented multipole magnetized and has a strong magnetic field composed of neodymium-based or other rare earth. The rotating ring 1 can be downsized. Also, in order to prevent a leakage magnetic field from the rotor 10 to the flange rotor 3 and the traveler 41, a spacer is provided.
28, the flange rotor 3, or the lower rotor 5 may be made of an appropriate material, or a magnetic shielding material may be attached at an appropriate place.

In the above-described embodiment, the winding diameter of the tube yarn 43 between the chase during spinning is detected by mounting a light emitting device and a light receiving device such as a laser diode at a position corresponding to the top of the ring flange 4 to detect the winding diameter. It is also possible to add a control system such as a circuit, a coefficient calculator, an override ring drive circuit, and the like, and perform the correction control of the ring rotation speed corresponding to the variation in the spinning tension between chase.

In the above-described embodiment, the bearings 6 and 7 may be replaced with other bearing mechanisms. Instead of the keyboard 74, other appropriate switches or dials may be used.

In the above-described embodiment, the rotating ring 1, the ring motor 9, the photoelectric sensor 27, and other members may be of various types, structures, sizes, shapes, materials, etc. other than those described above. Further, the circuit and configuration of the control device 70 can be variously modified, and the function realized by the CPU 71 can be realized by a hardware circuit as appropriate or vice versa.

〔The invention's effect〕

According to the invention of claim 1, it is possible to provide a spinning ring having a built-in ring motor which is small in size and excellent in practicality.

According to the second to fifth aspects of the invention, spinning can be performed at high speed and without causing yarn breakage by using the spinning rotary ring with a built-in ring motor. Therefore,
It is possible to greatly improve the productivity of the spinning machine.

[Brief description of drawings]

FIG. 1 is a sectional front view of a rotating ring according to the present invention, FIG. 2 is a view showing a changing state of a spinning tension and a stretch length during use of the rotating ring of FIG. 1, and FIG. 3 is related to the present invention. FIG. 4 is a block diagram of a control device, FIG. 4 is a block diagram showing functions of a CPU realized by a program stored in a ROM or an external storage, and FIG. 5 is a flowchart showing speed control processing by a speed control unit and a correction control unit. , FIG. 6 shows RO
FIG. 7 is a diagram showing an example of rotation speed control by a spinning program stored in M or an external memory, and FIG. 7 is a diagram for explaining the relationship between the force applied to the spun yarn by taking out the vicinity of the snell wire of FIG. is there. DESCRIPTION OF SYMBOLS 1 ... Rotating ring (rotating ring for spinning), 2 ... Ring rotating body, 6,7 ... Bearing (bearing mechanism), 8 ... Holder, 9
... ring motor, 10 ... rotor, 11 ... armature, 44 ... spun yarn, 70 ... control device, 71 ... CPU (control means), 73 ... ROM (program means), 74 ... keyboard (setting means), 77 ... external storage (program means), 101 ... speed control section (control means, program control means), 102 ... correction control section (correction control means), 103 ... comparison determination section (comparison means, determination means), 1
04… Tension detector (tension detector).

Claims (5)

[Claims] 1. A spinning ring for spinning, comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism, wherein the spinning ring is provided between the holder and the ring rotating body. A ring motor for positively rotating the ring rotating body is built in, and the ring motor includes a rotor composed of a permanent magnet provided substantially at the center of the outer peripheral surface of the ring rotating body in the axial direction, and the holder. It is arranged almost in the center of the inner peripheral surface of the
A spinning ring for spinning, comprising an armature facing the rotor with a predetermined gap held by the bearing mechanism. 2. A spinning rotating ring control device having a built-in ring motor, comprising: tension detecting means for detecting tension of spun yarn; setting means for setting an optimum tension of spun yarn; Comparing means for comparing the tension detected by the means with the optimum tension set by the setting means, and the rotation speed of the ring motor so that the tension of the spun yarn approaches the optimum tension according to the output of the comparing means. A control device for a spinning ring for spinning, comprising: 3. A spinning rotating ring control device having a ring motor built-in, comprising: tension detecting means for detecting tension of spun yarn; setting means for setting optimum tension of spun yarn; Determining means for determining whether the tension detected by the means is within the allowable range for the optimum tension set by the setting means, and the rotation of the ring motor so that the tension of the spun yarn is within the allowable range. A control device for a spinning ring for spinning, comprising: a control means for controlling the number. 4. A spinning rotation ring control device having a built-in ring motor, comprising tension detecting means for detecting tension of spun yarn, setting means for setting an optimum tension of spun yarn, and the tension detecting means. Determining means for determining whether the tension detected by the means is within an allowable range with respect to the optimum tension set by the setting means, and the number of revolutions of the spindle and the spinning ring for spinning is the stretch length or the proportion of the divided balls. A program means for setting the rotation speed to a predetermined rotation speed according to the above, and a program control means for controlling the ring motor so that the rotation speed of the spinning ring for rotation becomes the rotation speed set in the program means, When the judging means judges that the tension of the spun yarn exceeds the allowable range, the rotation speed of the ring motor is corrected so that the tension falls within the allowable range. Correction control means and the spinning rotating ring of the control apparatus characterized by comprising a. 5. A spinning rotating ring control device having a built-in ring motor, wherein the number of rotations of the spindle and the number of rotations of the spinning rotating ring corresponding to the number of rotations of the spindle correspond to the stretch length or the splitting ratio. And a program control means for controlling the ring motor so that the number of rotations of the spinning ring for spinning becomes the number of rotations set in the program means. Control device for rotary ring.