JP3134623B2 - Appropriate position stopping method and proper position stopping device for lifting body in 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 an appropriate position stop control of an elevating body such as a ring rail provided in a ring spinning machine, and more particularly to an elevating body in a spinning machine for stopping an elevating body at a preset target position. And a suitable position stopping device.

[0002]

2. Description of the Related Art For example, in a ring spinning machine of a spinning machine, ring rails provided on both sides of a machine base are driven up and down by a predetermined stroke, and yarn spun from a front roller is guided to a traveler mounted on the ring rail. By doing so, the tube yarn is formed in a predetermined shape. The drive of the ring rail is controlled by a lifting device provided on the ring spinning frame, and the setting is made so that the vertical speed of the ring rail and the spindle speed are synchronized.

The ring rail is stopped in an emergency when a trouble or the like occurs during the formation of the thread. The stop position of the ring rail is set to an appropriate position (hereinafter, referred to as an appropriate position) in consideration of the winding state of the yarn immediately after the restart of the operation of the ring rail. For example, when the ring rail is stopped during the formation of the yarn, it is convenient to stop the ring rail at a position lowered by a predetermined distance from the top position in consideration of the winding state of the yarn immediately after the restart of the operation.

Conventionally, as a method of stopping the ring rail at an appropriate position, as shown in FIG. 5, a spindle speed is temporarily reduced to a predetermined speed N ₀ based on a stop signal S, and the ring rail is set to a predetermined speed reduction. From the point in time when the rotation speed reaches the restart position P, the deceleration of the spindle rotation speed at the predetermined rotation speed N ₀ is restarted at a predetermined acceleration. That is, the spindle that rotates at the rotation speed N _S based on the stop signal is once decelerated to the rotation speed N ₀ at a predetermined speed gradient (predetermined acceleration) D1 and the rotation speed N
_It is held at ₀ , and the spindle speed is reduced again when the ring rail reaches the deceleration restart position P. The spindle speed for the front roller to a predetermined rotational speed NFB the spindle from the rotational speed N ₀ at a predetermined speed gradient D1 N _F
Decelerated until had stopped at proper position set the ring rail in advance by further decelerated from the rotational speed N _F until it stops at a predetermined velocity gradient D2.

[0005]

However, the deceleration resumption position P of the ring rail has been previously derived by trial and error by trial running the ring rail. Therefore, in order to determine the deceleration resumption position P of the ring rail, it was necessary to repeatedly perform the test operation for each of various setting conditions. For example, when the deceleration restart position P is set for each different chase length C, it is necessary to perform a test run of the ring rail for each chase length C. Therefore, setting the deceleration resuming position P was very troublesome. In addition, when it is desired to change the deceleration pattern of the spindle rotation speed or to change an appropriate position, it is necessary to newly perform a trial operation.
Therefore, in order to avoid troublesome test runs, it was not possible to easily change the setting of the deceleration pattern and the appropriate position.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to raise and lower a spinning machine in a spinning machine which does not need to perform a test operation to derive setting conditions for stopping a lifting body at a preset stop position. An object of the present invention is to provide a proper position stopping method and a proper position stopping device for a body.

[0007]

According to the first aspect of the present invention, an elevating body moving at a predetermined speed is decelerated at a predetermined acceleration to stop at a preset stop position. In the proper position stopping method of the elevating body in the spinning machine, before starting the deceleration of the elevating body, a deceleration start position where a position reaching a target speed in advance when the elevating body is decelerated at a predetermined acceleration can be set as a preset target position. Is calculated, and the lifting / lowering body is started to decelerate at the predetermined acceleration from the time when the lifting / lowering body reaches the deceleration start position.

According to the second aspect of the present invention, the driving means for driving the elevating body up and down, the position detecting means for detecting the position of the elevating body, and the elevating body moving at a predetermined speed are decelerated at a predetermined acceleration. Storage means for storing program data for calculating a deceleration start position at which a position at which the target speed has been reached can be set as a preset target position; and calculation for calculating the deceleration start position based on the program data stored in the storage means Means, when the position detecting means determines that the elevating body reaches the deceleration start position, the driving means so that the elevating body moving at the predetermined speed decelerates to the target speed at the predetermined acceleration. Control means for controlling driving.

[0009]

According to the first aspect of the present invention, before the elevating body moving at a predetermined speed starts decelerating,
A deceleration start position at which a position reaching the target speed when the elevating body is decelerated at a predetermined acceleration in advance can be set as a preset target position is obtained by calculation. Then, the elevating body starts decelerating at a predetermined acceleration from the time when the elevating body reaches the deceleration start position calculated by the calculation. After passing through the target position at the target speed, the elevating body decelerates at a predetermined acceleration and stops at a preset stop position. Since the deceleration start position is obtained each time by calculation, a test run for determining the deceleration start position becomes unnecessary.

According to the second aspect of the present invention, before the elevating body moving at the predetermined speed starts decelerating, the elevating body moving at the predetermined speed based on the program data stored in the storage means is moved at the predetermined acceleration. The calculation means calculates a deceleration start position at which the position at which the vehicle has decelerated to the target speed can be set as a preset target position. When it is determined that the lifting / lowering body has reached the deceleration start position calculated by the calculating means based on the position detecting means, the driving means controls the driving means so that the lifting / lowering body moving at a predetermined speed is decelerated at a predetermined acceleration. Drive controlled. As a result, the elevating body passes through the target position at the target speed, then decelerates at a predetermined acceleration, and stops at a preset stop position. For this reason, the deceleration start position is obtained each time by the calculation by the calculation means, so that a trial operation for determining the deceleration start position becomes unnecessary.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a ring spinning machine will be described below with reference to FIGS.

As shown in FIG. 3, a front roller 1 is provided between a driven gear 2 fitted to one end of a rotating shaft 1a thereof and a driving shaft 3 which is driven to rotate by a main motor M constituting driving means. Gear train (not shown)
And is driven to rotate. Further, the spindle 4 is driven to rotate via a spindle tape 6 wound around a chin pulley 5 fixed to the driving shaft 3. Front roller 1
And the spindle 4 are driven based on the rotational force of the main motor M, and the spinning amount of the front roller 1 and the spindle 4
Are set to a predetermined ratio so that the winding amount is always the same. The main motor M is driven by the control device CT at a predetermined rotation speed via an inverter 7 constituting a driving means.

A ring rail 8 as an elevating body is supported at predetermined intervals by a plurality of poker pillars 9 (only one is shown in FIG. 3) extending vertically. A screw portion 9a having a male screw is formed on the peripheral surface of the poker pillar 9, and a nut body 10 having a female screw that can be screwed with the male screw is screwed into the screw portion 9a. Nut body 1
The driven gear 10a is formed integrally with the lower part of the "0". At a height corresponding to the nut body 10, a line shaft 11 is rotatably disposed in a state parallel to the ring rail 8, and a drive gear 11a fitted to the line shaft 11 and a driven gear 10a of the nut body 10 are provided. Has been engaged. The line shaft 11 is operatively connected to an output shaft 13 of the switching mechanism 12 via a gear train (not shown). The input shaft 14 of the switching mechanism 12 is operatively connected to the driving shaft 3 via a gear train (not shown).

The switching mechanism 12 includes an input shaft 14 and an output shaft 13.
And two gear trains 15 and 16 are disposed between
3 is provided with electromagnetic clutches 17 and 18 at positions corresponding to the respective gear trains 15 and 16. Electromagnetic clutch 17,1
Numeral 8 is controlled to be deenergized by a control device CT, and only one of them is always energized. Input shaft 14
Is operatively connected to the output shaft 13 via a gear train 15 (16) corresponding to the excitation side electromagnetic clutch 17 (18). The line shaft 11 rotates forward when the electromagnetic clutch 17 is excited, and rotates reversely when the electromagnetic clutch 18 is excited. The ring rail 8 moves up and down with a stroke substantially equal to the chase length C based on the forward / reverse rotation of the line shaft 11, and its up / down position is moved upward by a shaper step amount ΔS every one up / down movement.

At a position corresponding to each spindle 4 of the ring rail 8, a ring 8 on which a traveler 19 is mounted so as to run is provided.
a is fixed. The yarn y spun from the front roller 1 passes through a snell wire 20 and is guided by a traveler 19 that moves up and down together with the ring rail 8. And
The yarn guided by the traveler 19 is fitted on the spindle 4 and wound on a bobbin b rotating at a high speed, whereby a tube yarn is formed from a lower portion to an upper portion of the bobbin b.

One end of the line shaft 11 is connected to a rotary encoder 21 which constitutes a position detecting means for detecting the rotation speed, and one end of the front roller 1 is connected to a proximity switch 22 for detecting the rotation speed. . or,
On the operation panel (not shown) of the machine stand, a stop button 23 for temporarily stopping the operation of the machine during the formation of the thread and a restart button 24 for resuming the operation of the machine stopped during the formation of the thread are provided. Both are shown in FIG. 4).

Next, the electrical configuration of the proper position stopping device will be described. As shown in FIG. 4, the control device CT includes a microcomputer 25. The microcomputer 25 includes a central processing unit (hereinafter, referred to as a CPU) 26 as an arithmetic unit and a control unit, a working memory 27, a program memory 28 as a storage unit, and a counter circuit 29 constituting a position detection unit. ing. The working memory 27 is composed of a readable and rewritable memory (RAM) for temporarily storing input data and results of arithmetic processing in the CPU 26, and the program memory 28 is composed of a read only memory (ROM) for storing a control program. The CPU 26 operates based on a control program stored in the program memory 28.

The control device CT has an input device 30. The input device 30 controls the yarn weight W, the yarn count Ne, the lift length Lt,
Data such as the chase length C is input, and these input data are stored in the working memory 27.
Input data W, Ne, L stored in the working memory 27
The pulse value C _U corresponding to the top position, the pulse value C _L corresponding to the bottom position, and the production yarn length LB corresponding to the total winding length of the tube yarn based on t, C, etc. in each elevating movement of the ring rail 8. Are calculated by the CPU 26 and are preset in the counter circuit 29 before the start of the machine operation.

The encoder 21 and the proximity switch 22 are connected to a counter circuit 29 via an input interface 31. A pulse signal having a pulse number corresponding to the number of rotations of the line shaft 11 and the front roller 1 is detected as a counter signal by the counter circuit 29. Is output to The counter circuit 29 counts the number of pulses of the pulse signal from the encoder 21 as the count value C1, and counts the number of pulses of the pulse signal from the proximity switch 22 and the number of pulses per unit time as count values C2 and C3, respectively. It has become. The count value C1 is reset each time one vertical movement of the ring rail 8, that is, one double stroke is completed, and the count value C3 is sequentially updated every predetermined time. The counter circuit 29 outputs the inverted signals RS1 and RS2 to the CPU 26 each time the count value C1 reaches the pulse value C _U or the pulse value C _L , respectively.
When the count value C2 reaches a value corresponding to the production yarn length LB, CP
A full signal FS is output to U26.
The stop button 23 and the restart button 24 are connected to the CPU 26 via the input interface 31, and the stop signal SS based on the pressing of the stop button 23 and the restart button 2
The restart signal MS based on the pressing of the button 4 is output to the CPU 26.

The CPU 26 is connected to the output interface 3
2, the main motor drive circuit 33 and the electromagnetic clutch excitation / demagnetization circuit 34 are connected. The CPU 26 outputs excitation / demagnetization switching signals S1 and S2 to the electromagnetic clutch excitation / demagnetization circuit 34 based on the inversion signals RS1 and RS2 from the counter circuit 29 to control the excitation and demagnetization of the electromagnetic clutches 17 and 18. That is, the CPU 26 outputs the excitation / demagnetization switching signal S1 to put the electromagnetic clutch 17 into the excited state via the electromagnetic clutch excitation / demagnetization circuit 34, and the excitation / demagnetization switching signal S2
, The electromagnetic clutch 18 is excited through the electromagnetic clutch excitation / demagnetization circuit 34.

The stop position P _S of the ring rail 8 when the stop button 23 is pressed, the ring rail 8 as shown in FIG. 1 is set at a position lowered by a predetermined distance L ₀ from the top position. When CPU26 inputs the stop signal SS from the stop button 23, pulse values the deceleration start position P _X of the ring rail 8 which the ring rail 8 based on the program data stored in the program memory 28 may stop at the stop position P _S Calculate as C _X. When the count value C1 of the counter circuit 29 reaches the pulse value _CX , CP
U26 sends a motor stop signal TS1 to the main motor drive circuit 33.
And the main motor M is stopped so that the spindle speed draws the deceleration pattern shown in FIG. In other words, spindle speed is decelerated at the acceleration α1 from the spindle rotational speed N _S during pressing of the stop button 23 as shown in FIG. 1 to the spindle rotational speed N _F corresponding to the rotation speed NFB of the front roller 1, further spindle to stop the rotation speed N _F is decelerated by the acceleration [alpha] 2. When the restart signal MS is output to the CPU 26 based on the pressing of the restart button 24, the motor drive signal KS is output from the CPU 26 to the main motor drive circuit 33, and the driving of the main motor M is restarted. ing.

On the other hand, when the ring rail 8 is stopped when the tube is full.
The stop position is located from the start position of the winding of the thread as shown in FIG.
It is set at the bottom bunch formation position D located a fixed distance below.
Is defined. The CPU 26 receives the full signal FS.
And the program data stored in the program memory 28.
The ring rail 8 at the top position based on the target speed V
_FPossible deceleration start position P_YTo the pulse value C_YCalculated as
I do. Target speed V_FIs the spindle speed N_FIn
This is the rail travel speed. Then, the counter circuit 29
Is the pulse value C_YWhen CPU reaches
A motor stop signal TS2 is output to the main motor drive circuit 33.
The spindle speed will draw the deceleration pattern shown in Figure 2.
Thus, the drive of the main motor M is stopped. Immediately
That is, as shown in FIG.
Pindle rotation speed N_SFrom the rotation speed NF of the front roller 1
Spindle speed N corresponding to B_FReduced by acceleration α1
Speeded up. And the ring rail 8 forms a top bunch
Each position via the position U and the bottom bunch forming position D
The spindle is held for a predetermined time at U and D
Revolution N_FAnd then the spindle rotates
Number N_FTo decelerate at the acceleration α2 and stop.
ing. In addition, from the top bunch formation position U to the bottom bunch
The ring rail 8 rotates while it moves down to the
Ndle rotation speed N _FAnd the corresponding speed V_FMove faster
It works. The spindle speed N_SIs
The CPU 26 uses the count value C3 of the counter circuit 29.
Is calculated.

The pulse values C _X and C _Y can be derived, for example, by the following calculation method. First, the pulse value C _X will be described. Deceleration start position P _X is a defined ring rail position, as the ring rail 8 when the spindle speed is decelerated by drawing a deceleration pattern shown in FIG. 1 becomes zero velocity at the stop position P _S, the pulse The value C _X is a value that uniquely determines the deceleration start position P _X.

[0024] In FIG. 1, the required time T1 of the spindle speed from the N _S by the acceleration α1 up to N _F is, T1
= (N _S -N _F ) / α1. Also, the required time T until the spindle rotational speed is stopped at the acceleration α2 from N _F
2 is represented by T2 = N _F / α2.

The rising stroke of the ring rail 8 is L (Ｌ
C), assuming that the descending stroke is (L-ΔS), the spindle rotational amount n _U in the ring rail ascending process and the spindle rotational amount n _D in the ring rail descending process are n _U = L / m _U , n _D = ( the L-ΔS) m _D.
Here, m _U and m _D are proportional coefficients determined by the gear ratio between the ring rail and the spindle. Therefore, the spindle rotation amount n ₀ that rotates during one double stroke is expressed as follows.

N ₀ = n _U + n _D = L / m _U + (L−ΔS) m _D The total rotation amount n _T from the start to the stop of the deceleration of the spindle speed is calculated by the total area of the hatched portion in FIG. Equally expressed as:

N _T = (N _S + N _F ) T 1/2 + N _F · T 2/2 = (N _S + N _F ) (N _S -N _F ) / 2α1 + N _F ² /
(2α2) The spindle rotation amount [Delta] n _E between the ring rail 8 moves from the last bottom position P _B to the stop position P _S is, delta
since it is _{n E = L / m U +} L 0 / m D, the ring rail 8 from the start decelerating spindle rotation amount n _B to reach the end of the bottom position P _B is expressed as follows.

N _B = n _T -Δn _E = (N _S + N _F ) (N _S -N _F ) / 2α1 + N _F ² /
(2α2) −L / m _U −L ₀ / m The _D ring rail 8 moves up and down by 1 every spindle rotation amount n ₀ from the first bottom position after the start of deceleration. Accordingly, the spindle rotation amount Δn _X from the start of deceleration to the time when the first bottom position is reached is calculated by dividing a value obtained by dividing the spindle rotation amount n _B by the spindle rotation amount n ₀ (n _B / n ₀ ) to n _0.
It is calculated as a multiplied value. The pulse value C _X corresponding to the deceleration start position P _X is expressed as follows.

[0029] _{C X = [C L · (} n 0 -Δn X) / n 0] ... (1) where the symbol [] is an integer of value within [] a Gaussian symbol. Under the deceleration condition of FIG. 1, Δn _x = n _B (∵n
_B <n ₀ ). Incidentally, when directing (1), although the via bottom position while the ring rail 8 reaches the stop position P _S from the deceleration start position P _X, if not through the bottom position, for example, the deceleration start position of FIG. 1 When located at the point P _X1 (n _T <Δn _E ), the pulse value C _X is expressed as follows.

[0030] _{C X = [C L · (} -n B) / n 0] ... (2) The (1), may be stored in the program memory 28 (2). Next, the pulse value C _Y will be described. Deceleration start position P _Y is a defined ring rail position, as the ring rail 8 when the spindle speed is decelerated by drawing a deceleration pattern shown in FIG. 2 and a spindle rotational speed N _F at the top position P _T The pulse value C _Y is a value that uniquely determines the deceleration start position P _Y.

In FIG. 2, the spindle rotation amount n _A from when the spindle rotation speed reaches N _F at the acceleration α1 from N _S.
Is equal to the total area of the hatched portion in FIG. 2 and is expressed as follows. n _A = (N _S + N _F ) (N _S -N _F ) / 2α1 The spindle rotation amount Δn _G during the movement of the ring rail 8 from the last bottom position P _B to the top position _PT is Δn
Because it is _G = L / m _U, spindle rotation amount n _C from the time of start of deceleration to the ring rail 8 reaches the end of the bottom position P _B is as follows.

N_C= N_A−Δn_G = (N_S+ N_F) (N_S-N_F) / 2α1-L / m_U Spin until reaching the first bottom position after starting deceleration
Dollar rotation amount Δn_YIs the spindle rotation amount n_CSpinned
Rotation amount n₀Divided by (n_C/ N₀) After the decimal point
n₀It is calculated as a multiplied value. Deceleration start position P_YTo
Corresponding pulse value C _YIs expressed as follows.

[0033] C _Y = a _{Δn Y = n C (∵n C} <n 0) in _{[C L · (n 0 -Δn} Y) / n 0] ... (3) deceleration condition of FIG. In order to derive the equation (3), it is assumed that the ring rail 8 passes through the bottom position from the deceleration start position _PY to the top position _PT .
For example, when the deceleration start position is located at the point P _Y1 in FIG.
_{In A} <Δn _G ), the pulse value C _Y is expressed as follows.

[0034] _{C Y = [C L · (} -n C) / n 0] ... (4) The (3), may be stored in the program memory 28 (4). Also, the spindle speed N _S and the pulse value C _X ,
A map indicating the relationship with C _Y may be stored in the program memory 28, and the pulse values C _X and C _Y may be calculated using the map.

Next, the operation of the proper position stopping device configured as described above will be described. Data such as the yarn weight W, the yarn count Ne, the lift length Lt, and the chase length C are input by the input device 30 in advance before the start of the tube yarn formation, and these input data are stored in the working memory 27. Before the start of the machine operation, all the count values C1 to C3 of the counter circuit 29 have been reset. The ring rail 8 is set at a winding start position.

First, prior to the start of the machine operation, the CPU 26 reads input data such as the yarn weight W, the yarn count Ne, the lift length Lt, and the chase length C from the working memory 27, and based on these input data, the pulse value C _U. , _CL , production thread length L
B, the shaper step amount ΔS and the like are calculated. Pulse value C
_U , _CL and the production yarn length LB are preset in the counter circuit 29.

Thereafter, the driving of the main motor M is started, and the main motor M is rotated at a predetermined speed. With the start of driving of the main motor M, the ring rail 8 starts rising, and the front roller 1 and the spindle 4 start rotating. The counter circuit 29 starts counting the count values C1 to C3. When the count value C1 reaches the pulse value C _U, inverted signal RS1 from the counter circuit 29 to the CPU 26 is output, CPU 26
Represents an electromagnetic clutch excitation / demagnetization circuit 34 based on the inversion signal RS1.
To output the excitation demagnetization switching signal S1 to excite the electromagnetic clutch 17. As a result, the ring rail 8 is inverted at the top position to change from a rising motion to a lowering motion. Also, the count value C
When 1 reaches the pulse value C _L , the counter circuit 29
An inversion signal RS2 is output to the PU 26, and the CPU 26 outputs an excitation / demagnetization switching signal S2 to the electromagnetic clutch excitation / demagnetization circuit 34 based on the inversion signal RS2 to excite the electromagnetic clutch 18. As a result, the ring rail 8 is inverted at the bottom position, and shifts from the downward movement to the upward movement. As the electromagnetic clutches 17 and 18 are alternately excited and demagnetized, the ring rail 8 moves up and down with a stroke substantially equal to the chase length C, and moves upward at each elevating movement by the shaper step amount ΔS. .

For example, when the stop button 23 is pressed during the machine operation, the CPU 26 reads the count value C3 of the counter circuit 29 based on the stop signal SS from the stop button 23 and calculates the pulse value _CX . That, CPU 26 calculates a spindle speed N _S at that time from the count value C3 read from counter circuit 29, stops the ring rail 8 based on the program data stored in the program memory 28 by using the spindle speed N _S It calculates a pulse value C _X that can stop at the position P _S. When the count value C1 of the counter circuit 29 reaches the pulse value _CX , C
The motor stop signal T is sent from the PU 26 to the main motor drive circuit 33.
S1 is output. As a result, from the time the ring rail 8 is located at the deceleration start position P _X, the main motor M is decelerated as spindle speed draws a deceleration pattern shown in FIG. As a result, the stop position and lowered ring rail 8 and move up and down with the deceleration from the deceleration start position P _X at a predetermined acceleration as shown in FIG. 1 from the top position by the predetermined distance L ₀ P
Stop at _S.

Thereafter, when the restart button 24 is pressed, a restart signal M from the restart button 24 is transmitted to the CPU 26.
S to the main motor drive circuit 33 based on the motor drive signal MS
Is output to restart the driving of the main motor M. At that time, since the ring rail 8 is operated resumed from the stop position P _S which is lowered by a predetermined distance L ₀ from the top position, the stop button 2
Shutdown by 3 does not hinder the formation of the thread.

When the count value C2 of the counter circuit 29 reaches a value corresponding to the production yarn length LB, the counter circuit 2
9 outputs a full signal FS to the CPU 26. CPU
26 reads the count value C3 from the counter circuit 29 based on the full-package signal FS and calculates the pulse value C _Y. That is, C
The PU 26 calculates the count value C3 read from the counter circuit 29.
Calculates the spindle speed N _S at that time from
Calculates a pulse value C _Y, which may be a target speed V _F at the top position of the ring rail 8 based on the program data stored in the program memory 28 by using the spindle speed N _S. CPU26 is the count value C1 of the counter circuit 29 reaches the pulse value C _Y, in the main motor driving circuit 33 outputs a motor stop signal TS2 is spindle speed mainly motor M so as to draw a deceleration pattern shown in FIG. 2 Slow down. As a result, reach the target speed V _F corresponding to the spindle rotational speed N _F at the ring rail 8 is decelerated while lifting and lowering to the top position P _T at a predetermined acceleration from deceleration start position P _Y as shown in FIG. After that, the ring rail 8 passes through the top bunch forming position U and the bottom bunch forming position D, and is held at each of the positions U and D for a predetermined time to form the top bunch and the bottom bunch. Meanwhile, the spindle 4 is rotated by the spindle rotational speed N _F, is decelerated from the spindle rotational speed N _F with acceleration α2 after Botomubanchi formation. Then, the ring rail 8 stops at the bottom bunch forming position D. Thus, the formation of the thread is completed.

As described in detail above, according to this embodiment, C
PU 26 is a stop signal SS from the counter 29 circuit or
Spindle rotation at that time based on full signal FS
Number N _SIs calculated and its spindle speed N_SCorresponding to
Deceleration start position P_X, P_YTo pulse C_X, C_YCalculated as
did. Then, the count value C1 is equal to the pulse C_X, C_YReach
And decelerate the main motor M in a predetermined deceleration pattern
The ring rail 8 to a preset stop position P_S, D
It is possible to stop at. Therefore, the conventional device
, The ring rail can be stopped at a predetermined stop position
Ring race that was performed to find a proper deceleration start position
The test run of the device 8 can be completely eliminated. Also, reduce the speed
Even if you change the setting of the turn or stop position,
The speed start position can be easily obtained by calculation.
New trial run is required to find the deceleration start position
There is no. Therefore, the deceleration pattern and stop position
Setting is restricted to troublesome commissioning of the ring rail.
It can be changed as needed.

The present invention is not limited to the above embodiment, but can be modified as follows without departing from the spirit of the invention. (1) the stop position of the ring rail can be suitably set without being limited to the stop position P _S and Botomubanchi forming position D.

(2) The deceleration pattern of the main motor M is not limited to the deceleration pattern shown in FIGS. For example, a configuration may be adopted in which the spindle rotational speed is decelerated in a curve with an acceleration α (t) that is a function of time.

(3) The ring rail 8 is not driven by the main motor M for driving the spindle 4 and the front roller 1, but the ring rail 8 is synchronized with the spindle 4 and the front roller 1 by a lifting motor dedicated to the ring rail. It is good also as a structure driven like this. further,
The lifting motor is a variable speed motor that can rotate forward and reverse,
The switching mechanism 12 may be omitted.

(4) The method of calculating the pulse values C _X and C _Y corresponding to the deceleration start positions P _X and P _Y is not limited to the above embodiment, but may be changed to another appropriate calculation method. (5) In the above embodiment to stop the ring rail 8 on the basis of the stop signal from stop button 23 at suitable positions P _X,
For example, the ring rail 8 may be stopped at an appropriate position based on an emergency stop signal from a sensor that detects a trouble or the like.

(6) In the above embodiment, the pulse values C _X and C _Y
The shaper step amount ΔS was considered in the calculation of
If the accuracy of the pulse values C _X and C _Y is ensured, it is not necessary to consider the shaper step amount ΔS.

(7) The present invention may be applied to a spinning machine other than a ring spinning machine, such as a ring twisting machine.

[0048]

As described above in detail, according to the present invention, there is an excellent effect that it is not necessary to perform a test operation for deriving a set condition for stopping the elevating body at a preset stop position.

[Brief description of the drawings]

FIG. 1 is a graph showing a temporal change in a position of a ring rail and a spindle rotation speed in a machine operation stop process at a halfway stop in one embodiment of the present invention.

FIG. 2 is a graph showing a temporal change in a position of a ring rail and a spindle rotation speed during a machine operation stop process at the time of a full tube stop.

FIG. 3 is a schematic diagram illustrating a configuration of a lifting device.

FIG. 4 is a block diagram showing an electrical configuration of the proper position stopping device.

FIG. 5 is a graph showing a temporal change in a position of a ring rail and a spindle rotation speed in a machine base stop process in the related art.

[Explanation of symbols]

Reference numeral 8: a ring rail as a lifting / lowering body, 7: an inverter constituting a driving means, 21 ... a rotary encoder constituting a position detecting means, 26 ... C as a computing means and a control means
PU, 28... Program memory as storage means, 29
... Counter circuit constituting position detecting means, M. Main motor constituting driving means.

Continued on the front page (56) References JP-A-1-250423 (JP, A) JP-A-3-55855 (JP, U) JP-A-53-78230 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) D01H 1/36 D01H 1/30

Claims (2)

(57) [Claims] 1. A method for stopping an elevating body moving at a predetermined speed at a predetermined stop position by decelerating the elevating body moving at a predetermined speed at a predetermined stop position, the method comprising: Calculating a deceleration start position at which a position reaching a target speed in advance when the elevating body is decelerated at a predetermined acceleration can be set as a preset target position; and calculating the deceleration starting position from the time when the elevating body reaches the deceleration start position. A proper position stopping method of the elevating body in the spinning machine that starts decelerating the body at the predetermined acceleration. A driving unit for driving the lifting body up and down; a position detecting means for detecting a position of the lifting body; and a position where the lifting body moving at a predetermined speed is decelerated at a predetermined acceleration to reach a target speed. Storage means for storing program data for calculating a deceleration start position that can be a preset target position; calculating means for calculating the deceleration start position based on the program data stored in the storage means; and the position detection means When it is determined that the elevating body has reached the deceleration start position, control means for driving and controlling the driving means so that the elevating body moving at the predetermined speed is decelerated to the target speed at the predetermined acceleration. A proper position stopping device for a lifting body in a spinning machine equipped with: