JP3080778B2 - Spindle drive control device for spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle drive control device for a spinning machine such as a ring spinning machine or a ring twisting machine, and more particularly to a spindle drive after a traveler is replaced.

[0002]

2. Description of the Related Art In a ring spinning machine, a yarn is wound around a bobbin via a traveler sliding on a ring flange. Since this traveler is worn by friction with the ring flange, it is replaced at regular intervals (about two weeks). After replacing the traveler, the running-in operation is performed at a speed lower than that of the normal spindle rotation, and the traveler and the ring flange are adapted to allow the traveler to slide smoothly on the ring. Try to prevent.

Various techniques for shifting from the running-in operation to the normal spinning operation have been proposed in response to recent ultrahigh-speed spinning machines (spindle rotation speed during normal spinning is 18000 to 25000 rpm). For example, Japanese Patent Application Laid-Open No. 3-104935 discloses a method in which the spindle rotation from the start to the stop of spinning of a spinning machine is stepwise shifted, and a plurality of shift patterns having different maximum rotation speeds are set and stored in advance. From the speed change pattern, select the required speed change pattern according to the type of traveler and spinning conditions, and combine them to gradually increase the maximum spindle speed from break-in operation to normal spinning speed for each doffing. There is disclosed an arrangement for increasing the speed.

[0004]

In the ultra high-speed spinning machine as described above, the initial spinning (1 to 3 minutes) and the high speed spinning (3 to
In the former, the distance between the traveler 8 and the snail wire is long and ballooning is large.
Receives the yarn tension in a substantially horizontal direction, and its posture is the ring 7a.
(FIG. 5A), but the ballooning of the latter causes the traveler 8 to tilt obliquely upward due to tension (FIG. 5B). For this reason, the traveler 8 has a different sliding contact surface with the ring 7a at the beginning of spinning and at the time of high-speed spinning. In addition, the hardness of the high-speed spinning frame is higher than before to ensure the life of both the ring and the traveler, and it takes longer to break in at low-speed rotation than at high-speed rotation. It is necessary that the running-in operation of the traveler 8 be performed properly both at the time of departure.

In the above-mentioned prior art, the maximum rotation of the spindle during the running-in operation is gradually increased. Therefore, it can be said that the traveler is easily adaptable to the ring during high-speed spinning, but the ballooning is small and stable during high-speed spinning. The yarn breakage is originally small, and there is no problem if the break-in rotation at the same rotation speed is repeated several times during high-speed spinning, and then the speed is immediately increased from the break-in rotation to the normal high-speed rotation. Rather, the ballooning is large and the yarn tension fluctuates greatly in the early stage of spinning.
In addition, due to the demand for efficient operation in the initial spinning period even during the running-in operation, the spindle rotation in the initial spinning period in the running-in operation is gradually reduced from the running-in speed lower than the speed in the initial spinning period in the normal operation state. It has been found by the applicant that raising the height and allowing the traveler to sufficiently conform to the ring in the early stage of spinning is important for preventing yarn breakage and improving productivity.

In the early stage of spinning in the running-in operation, when the running-in speed is gradually lowered from the running-in speed lower than the normal spinning speed to the normal spinning speed every time the doffing is performed, in the above-described conventional technique, for example, When raising the initial break-in rotation to ten stages, the speed pattern from the start to the stop of spinning must be set and stored in accordance with the ten-stage break-in rotation, and there is a problem that it takes time and effort to input. Was.

SUMMARY OF THE INVENTION An object of the present invention is to provide a spindle drive control device that can easily perform a break-in operation at the beginning of spinning, particularly in an ultra-high-speed spinning machine, and that can easily perform input setting work.

[0008]

SUMMARY OF THE INVENTION To achieve the above object, the present invention relates to an automatic spinning operation, in which a spindle drive motor is varied by a motor control device, and after the traveler is replaced, the spindle is run-in and then automatically operated. In the spindle drive control device of the spinning machine, the production speed from the beginning of winding to the full winding is divided into a plurality of sections, and the reference rotation speed during spindle break-in operation and at least Previous in that section corresponding to the initial section
Setting means for setting the increment for increasing the speed stepwise from the reference rotation speed, and storage means for storing each set value set by the setting means, and a spindle in at least the section at the beginning of spinning during running-in operation. Each time the vehicle passes through the section , the rotation speed is calculated based on the reference rotation speed and the speed increase stored in the storage means, and a break-in rotation command means for instructing the motor control device is provided.

[0009]

According to the above, during the running-in operation after replacing the traveler, the spindle rotation at the beginning of spinning is calculated from the reference rotation and the speed increase, and the running-in rotation at the beginning of spinning is gradually increased. Thereby, the familiarity of the traveler and the ring in the early stage of spinning is well performed. Even if the running-in speed at the beginning of spinning is gradually increased as described above, since the spindle speed is calculated from the reference speed and the increased speed, it is not necessary to input many speed patterns. Hassle-free.

[0010]

In FIG. 1, reference numeral 1 denotes a spring piece of a spinning machine, 2 denotes a spindle rail, and a large number of spindles 3 are rotatably supported on the spindle rail 2 in the machine longitudinal direction. A drive motor 4 for driving each spindle 3
Variable speed control is performed by an inverter (motor control device) 5 that outputs a variable speed command to the drive motor 4 based on an output signal of the control device 6. The drive motor 4
Are connected via a gear or the like so as to rotate the front roller 9 of the draft portion. Reference numeral 7 denotes a ring rail, 7a denotes a ring, 8 denotes a traveler, 10 denotes a spun yarn, 11 denotes a snail wire, and 12 denotes a bobbin.

The control unit 6 includes a central processing unit (CP)
U) 13, a program memory 14 composed of a ROM,
A readable memory (RA) as storage means for storing the calculation results of the CPU 13 and the set values from the keyboard 16
M) 15 etc. The program memory 14 stores a control program according to a flowchart described later. A keyboard 16 as setting means is connected to the control device 6, and the output from the keyboard 16 to the full volume from the start of winding to 0 to 1.5 minutes, 1.5 to 3 minutes, and 3 to 9 minutes. , Corresponding to the _four sections Z _{1 to} Z ₄ divided from the 9-minute ball to the full pipe, the normal spinning speeds H _{1 to} H ₄ , the reference speeds L _{1 to} L ₄ in the break-in operation, and the speed increase, respectively. In addition to ΔL ₁ to ΔL _4, a break-in spinning length LL required for break-in operation is set and input. The break-spinning length LL is a most slow interval Z ₁ is set from the required number of passes through the section Z ₁ to familiar traveler 8 and the ring 7a is performed successfully, and usually spinning rotational speed in the interval Z ₁ H the fact that ₁ after accelerated up to 95% of the normal even good results as spinning rpm H ₁ is obtained, after performing a doffing 9 times in this embodiment, a single pass section Z ₁ It is set to the length at the time when it was done. The controller 6 is connected to a switch 21 for detecting the operation of the doffing device 20 and outputting a refilling completion signal, and for detecting the rotation of the front roller 9 and providing the spinning length data. Is connected.

In this embodiment, the reference rotation speeds L _{1 to} L ₄ are 85%, 90%, 91%, and 85% of the normal spinning speeds H _{1 to} H ₄ , respectively.
90%, and the speed increase {L _1- △} from there.
L ₄ is a generally spinning rpm H ₁ to H in response to the section Z ₁ to Z ₄
1% ₄ 2%, 3%, is set to 5% addition, break-spinning length LL is the length of the rotation of the section Z ₁ is 0.95H _1,
That is, there is a length that has passed through the section Z ₁ after nine doffing, these reference rotational speed L ₁ ~L _4, a speed increasing amount △
L ₁ ~ △ L _4, spinning length LL types of traveler break, is variously set as running-in each section Z ₁ to Z ₄ may have an appropriate through the spinning conditions, also in the section Z ₃ Usually Boseki as the rotational speed H 95% the break-reference rotation speed of the rotation of _one output, a speed increasing amount to zero, no problem even if shifted to immediately normal spinning rotated from this state.

Next, the operation will be described with reference to FIG. First spinning conditions, with the type of the traveler 8 are used in the spinning machine, usually spinning rotational speed with respect to the four sections Z ₁ to Z ₄ H
₁ to H _4, the reference rotational speed L ₁ ~L _4, a speed increasing amount △ L ₁ ~ △ L ₄ are inputted from the keyboard 16. At the same time, the break-in length LL necessary for the break-in operation of the traveler 8 is also input (step S).
1). The input set values are stored in the RAM 15 in association with each other as shown in the table of FIG. 4 (step S2). Subsequently, the start of the machine is determined (step S3), and it is determined whether or not the break-in operation has been performed after the traveler has been replaced by a signal of a break-in operation instruction switch (not shown) (step S4).

When the running-in operation is not performed, the production amount detector 22
Determine a section in accordance with the spinning length from, sequentially reads and outputs a speed command to the inverter 5 such that the rotation of the normal spinning rpm H ₁ to H _4, which is the memory (Step 1
1). The inverter 5 outputs a shift command corresponding to the section Z ₁ to Z ₄ to the drive motor 4 receives the speed command, as a result, the spindle 3 is normal spinning operation all the sections are all normal spinning rpm And drive is performed until it is full (step S12). A drive command is issued by issuing a stop command after the
Is stopped (step 9), the doffing is confirmed by the signal of the switch 21 (step 10), and the process returns to step 3 again.

When the traveler 8 is replaced after the doffing, the operation is as follows. In step 4 after the start-up, it is determined that the running-in operation has been performed, and step S as the running-in rotation command means is performed.
Go to 5. At step S5 corresponding the speed data memory for each section Z ₁ to Z ₄ reads the reference rotation L ₁ ~L _4,
Based on the spinning length data from production detector 22, and outputs a speed command to the inverter 5 as the spindle rotation in each section Z ₁ to Z ₄ is the reference rotational speed L ₁ ~L _4. The inverter 5 thereby changes the speed of the drive motor 4 in a stepwise manner.
Then, in step 6, the spinning length data from the production amount detector 22 is integrated, and in step 7, it is determined whether or not the integrated value has become the break-in production amount LL, but the break-in production amount LL is at least 0 to 0 in this embodiment. Since the rotation speed of the section Z ₁ of the 1.5 minute ball is 0.95 H ₁ , it is continuously wound up to the full tube, and when the tube becomes full (step 8), the operation is stopped.
Doffed.

[0016] is activated again, adding a speed increasing amount △ L ₁ ~ △ L ₄ since the second interval Z ₁ to Z ₄ in the spindle at step S5 respectively reference RPM L ₁ ~L ₄ of turn running- and is output, than _first break-each section Z ₁ to Z ₄ in the spindle respectively _{△ L 1, △ L 2,} △ L 3,
Only △ L ₄ to increase speed. Hereinafter this is repeated, the current spindle rotation during break-in _once than before △ L ₁ ~ △ L ₄
The speed is increased by one. Accelerating large section Z ₂ to Z After _four in each the interval rotation of width five times, 3 times, the rotation break twice reaches the normal spinning rpm H ₂ to H _4, more many times accelerating component is not added even pass through the section, but to maintain normal spinning rpm H ₂ to H _4, since break-even then in the section Z _1, a break-in as a whole. Incidentally, break the spindle rotation number of sections Z ₂ to Z ₄ in the rotation Hayashi increased to just before reaching the normal spinning rpm H ₂ to H _4, when a break-spinning length LL, all sections Z ₁ all the spindle speed of the to Z ₄ may be the normal spinning rpm H ₁ to H _4.

Then, the integrated value of the production amount is changed into the break-in production amount L
L become the spindle rotation interval Z ₁ advances to step S11 becomes 0.95H _1, spindle rotation interval Z ₁ is shifted to the normal spinning rpm H _1, all intervals Z ₁ ~
RUNNING signal with Z ₄ are all driven in the normal spinning speed is reset, thereafter the normal spinning speed.

[0018] 10 times in this way in 1% increments in the section Z ₁ is in this application, and because 5 times stepwise speed increase of the section Z ₂ in steps of 2% is performed, break the spun early traveler 8 Driving is performed well. Since gradual speed increasing even interval Z ₃ is being carried out, in the high speed range, running-in the traveler is very well done. Since the speed command for the stepwise speed increase is calculated from the reference speed and the speed increase, it is not necessary to set and input all of the many shift patterns, and the pattern can be easily changed. Further, in the present embodiment, the pattern in which the traveler break-in operation is performed after the doffing is described.However, according to the present invention, the break-in operation is started at any stage during the spinning because the optimal break-in condition is set in each shift stage. Good.

[0019]

As described above, according to the present invention, the spindle rotation at least in the initial stage of spinning during the break-in operation is calculated from the reference rotational speed and the speed increase, and the command is sent to the drive motor. Can be gradually increased, and as a result, in the initial stage of spinning, the traveler can easily adapt to the ring, and the traveler can rotate smoothly, thereby preventing yarn breakage. In addition, the spindle rotation at the beginning of spinning during the break-in operation is calculated from the reference rotation speed and the speed increase. Therefore, even if the spindle rotation at the beginning of spinning is increased in multiple stages, the spindle at each stage is increased. It is not necessary to set each rotation, and the trouble of inputting is eliminated. Furthermore, the reference rotation speed and the speed increase can be freely set, so that an optimal break-in operation according to the type of the traveler and the spinning conditions can be performed.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of the present invention.

FIG. 2 is a control program.

FIG. 3 is a diagram showing a speed change pattern of a spindle rotation speed.

FIG. 4 is a table showing speed data.

FIG. 5 is an explanatory view of a traveling posture of a traveler.

[Explanation of symbols]

3 spindle, fourth drive motor, 5 inverter, 7a ring, 8 traveler, Z ₁ to Z ₄ sections, L ₁ ~L ₄ reference rotation speed, △ L ₁ ~ △ L _{4-acceleration} component

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yutaka Tanaka 1-14-2 Ichimatsudo, Gifu City, Gifu Prefecture (72) Inventor Susumu Suzuki 9th Uemachi, Kobe, Imaisecho, Ichinomiya City, Aichi Prefecture (72) Inventor Yuji Ando 911 Moribe, Anpachi-cho, Anpachi-gun, Gifu Prefecture Examiner Yutaka Yamazaki (56) Reference JP-A-3-104935 (JP, A) JP-A-1-239122 (JP, A) JP-A-3- 124819 (JP, A) JP-A-61-47832 (JP, A) JP-A-60-155728 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D01H 1/26

Claims (1)

(57) [Claims] 1. A spindle drive control device for a spinning machine in which a drive motor of a spindle is variable-speed controlled by a motor control device, and after the traveler is replaced, the spindle is allowed to break in and automatically shift to a normal spinning operation. , a) Volume of production from the beginning up to the full tubes corresponding to each section divided into a plurality, the section corresponding to the spindle of habituation reference rotational speed and at spinning initial interval during operation
Setting means for respectively setting the amount of speed increase for increasing the speed in steps from the reference rotation speed in b) storage means for storing each set value set by the setting means; c) at least spinning during running-in operation leaving the spindle rotation interval in the initial, each passing through the section, the Symbol
A running-in rotation commanding means for calculating the rotation speed based on the reference rotation speed and the speed increase stored in the storage means and instructing the motor control device to instruct the motor control device.