JP2002012368A - Speed control device for winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speed control device for a winding machine capable of surely preventing an emergency stop due to overcurrent of an inverter also when speed reduction and stop are performed in a large inertial state at the time of full bobbin, while surely preventing the emergency stop due to overcurrent of the inverter by quickly stopping bobbin holders when winding is stopped just after starting acceleration. SOLUTION: A controller 10 for a spindle driving type winding machine is characterized by comprising a speed reduction stop control means 103 during acceleration for performing a speed reduction stop control for motors 4 and 5 for driving bobbin holders in accordance with a first speed reduction stop control mode, a speed reduction stop control means 104 during winding for performing a speed reduction stop control for the motors 4 and 5 for driving the bobbin holders in accordance with a second speed reduction stop control mode different from the first speed reduction stop control mode and a selection means 102 for selecting either one of the speed reduction stop control means 103 during acceleration or the speed reduction stop control means 104 during winding based on whether bobbin holders BH1 and BH2 are during acceleration or during winding when a winding stop signal is inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed control device for a spindle driven winding machine provided with a motor for driving a bobbin holder having one or more bobbins mounted thereon. The present invention relates to a spindle-driven spinning winder that continuously winds a filament yarn while automatically switching between a take-up position and a take-up position.

[0002]

2. Description of the Related Art A spindle drive type winder such as a spinning winder is provided with a driving motor such as an induction motor for driving a bobbin holder which is a spindle. The controller that controls the drive motor gradually decelerates and stops the drive motor when the operator operates the winding stop switch, when the package is full, or when an alarm occurs. Stop control is performed as described above.

As a technique related to such deceleration stop control of the bobbin holder, for example, a method of setting a single deceleration time in a controller in advance and controlling to stop at the deceleration time during all decelerations (first method) ) Has been adopted. In this method, the deceleration time, which is a parameter, is set to a long time so that an overcurrent does not occur when the full inertia is full.

Further, as described in Japanese Patent Application Laid-Open No. 62-215476, at least the number of rotations or the diameter of the bobbin holder is set for the purpose of making the braking time substantially constant regardless of whether the winding is completed or not. It is known to change the deceleration gradient with a function. Japanese Patent Application Laid-Open No. 62-215476 discloses, as a first embodiment, FIG.
A method (second method) of calculating a winding diameter from an inverter frequency and a speed target value immediately before braking and calculating a deceleration gradient from the winding diameter and the inverter frequency is described. As a second embodiment, a method of determining a deceleration gradient by a function related to the number of rotations and performing braking at a predetermined speed in the same time regardless of the winding diameter (third method) with reference to FIG. ) Is explained.

In the motor acceleration control using an inverter as in the first to third methods, generally, voltage / frequency constant control for maintaining the ratio of voltage to frequency at a constant value p during the entire period of acceleration. Is performed. However, in a winder such as a spinning winder which is an industrial machine, a voltage raising operation in which the ratio of the voltage to the frequency is slightly larger than the constant value p at the beginning of the acceleration period for the purpose of shortening the acceleration time or the like. The method may be adopted.

[0006]

For example, in a spinning winder, a winding stop switch may be operated during acceleration of a bobbin holder in the following cases. As an example, when the winding machine is started, that is, before the yarn is manually threaded for the first time, there is a case where a parameter setting error is noticed immediately after the start. As another example, there is a case where an upstream spinning device is maintained. At the time of maintenance such as the latter, it is preferable to stop winding immediately after the package being wound reaches the full state to avoid wasting the package, but at this timing, the bobbin holder in the standby position accelerates. It is medium.

In any of the above-described first to third methods, no consideration is given to deceleration stop control when stopping the bobbin holder during acceleration (before threading). There are the following problems.

First, in a first method in which a single deceleration time is set in advance as a parameter, when decelerating and stopping from an acceleration state before threading, as described above, a long deceleration time is set to prevent overcurrent. Therefore, there is a problem that an unnecessary time is required until the rotating body completely stops even though the rotating body is in a low speed state and the inertia of the rotating body is small. In particular, when the take-up stop operation is performed immediately after the start of acceleration at start-up (when only one bobbin holder is accelerating and the other bobbin holder is stopped), braking is performed for a long time from the extremely low speed state. Is very inefficient. Further, as described above, the voltage is raised immediately after the start of acceleration (the initial period of acceleration). Therefore, if the deceleration is stopped for a long time, the overcurrent state due to the voltage increase will continue for a predetermined time or more. This may cause an emergency stop (trip) of the inverter. When an inverter trip occurs, there is a problem that the output of the inverter is stopped and it is necessary to perform a special reset operation to cancel the output.

In the above publication, as a description of the second method, when the rotation speed is high and the winding diameter is small (when the inertia is small), a steep deceleration gradient is used, and when the rotation speed is low and the winding diameter is large ( It is described that when the inertia is large, braking is performed with a gentle deceleration gradient. This is based on the premise that the rotation speed of the bobbin holder is gradually reduced during winding. As can be seen from FIG. 2 of the publication, when the rotation speed of the bobbin holder is low (B1 or B1 ′), Braking is more gradual than when the rotation speed is high (A1 or A2 '). Therefore, when the winding stop operation is performed during acceleration, the inverter frequency is still low, so that the winding diameter is recognized as being large and braking is performed gently, which may cause the same problem as the first method. There is.

Further, in the third method of determining the deceleration gradient by a function relating only to the rotation speed (irrespective of the winding diameter), when the winding stop operation is performed during acceleration in which the inverter frequency is still low, Therefore, braking is performed in a short period of time determined by the ratio to the maximum speed (see Equation 4 in the publication), and unnecessary long-time braking does not occur. However, as described above, during winding, the number of rotations of the bobbin holder gradually decreases with the progress of winding. Therefore, in the third method, when the bobbin holder is stopped when it is full or immediately before it is full, In spite of the fact that the inertia is very large, the ratio of the current speed to the maximum speed is small, so that the deceleration time is shortened and rapid braking is performed. When sudden braking is performed in a state where the inertia is large, there is a problem that an inverter trip occurs due to an overcurrent.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in a case where the winding is stopped immediately after the start of acceleration, the bobbin holder is stopped quickly to prevent an emergency stop due to an overcurrent of the inverter. It is an object of the present invention to provide a speed control device of a winder capable of reliably preventing an emergency stop due to an overcurrent of an inverter even when a deceleration stop is performed in a state of large inertia such as a full load.

[0012]

According to one aspect of the present invention, there is provided a speed control device for a winder provided with a motor for driving a bobbin holder having one or more bobbins mounted thereon. A deceleration stop control means for decelerating and stopping the bobbin holder driving motor in accordance with a first deceleration stop control mode, and deceleration of the drive motor in accordance with a second deceleration stop control mode different from the first deceleration stop control mode During take-up deceleration stop control means for controlling stop, and when a take-up stop signal is input or an alarm generation signal is input, the bobbin holder is accelerating or taking up based on whether the bobbin holder is taking up or taking up. Selecting means for selecting either the deceleration stop control means or the winding-time deceleration stop control means. According to the present invention, when the take-up stop switch is operated or the like, or when the take-up stop signal is inputted or the alarm generation signal is inputted due to the abnormality of the take-up machine or the like, the selecting means sets the take-up state (when the bobbin holder is turned off). Depending on whether the vehicle is accelerating or winding up), either the deceleration stop control during acceleration or the deceleration stop control during winding is selected.
The selected control means performs deceleration stop control of the motor for driving the bobbin holder according to the respective deceleration stop control modes.

According to a second aspect of the present invention, there is provided a bobbin holder which is switchable between a winding position and a standby position and has two bobbin holders to which driving motors are separately connected. When the upper package reaches a full package, the yarn is transferred by bobbin holder switching to start winding on the other bobbin holder. An acceleration deceleration stop control means for deceleration stop control of the driving motor; a winding deceleration stop control means for deceleration stop control of the drive motor according to a second deceleration stop control mode different from the first deceleration stop control mode; When a winding stop signal is input or an alarm generating signal is input, based on the winding state of each bobbin holder,
A speed control device for a winder, comprising: a speed-change stop control means during acceleration or a speed-change stop control during winding operation for each bobbin holder.

According to the second aspect of the present invention, when the take-up stop signal is inputted by operating the take-up stop switch or the like, or when the alarm generation signal is inputted due to the abnormality of the take-up machine, the selection means is turned on. According to the winding state of each bobbin holder (whether the bobbin holder is accelerating or winding), the deceleration stop control means during acceleration or the deceleration stop control means during winding is individually controlled for each bobbin boulder. Choose one. For example, the bobbin holder at the standby position is accelerating,
When a take-up stop signal is input when the bobbin holder at the take-up position has reached the full position, the deceleration stop control means during acceleration is selected for the bobbin holder at the standby position, and the bobbin holder at the take-up position is at the take-up position. The winding speed reduction control means is selected for the other bobbin holder. Each bobbin holder is decelerated and stopped according to the deceleration and stop control mode of the selected control means.

According to a third aspect of the present invention, the first and second aspects are provided.
In the deceleration stop control mode, the deceleration gradient is set as a deceleration parameter in one deceleration stop control mode, and the deceleration time is set in advance as a deceleration parameter in the other deceleration stop control mode. In the present invention,
In accordance with the selected control means, the motor is decelerated and stopped so as to have a preset deceleration gradient or deceleration time. For example, when the deceleration stop control unit during acceleration is selected, deceleration stop control (braking) is performed so as to have a deceleration gradient preset in the first deceleration stop control mode, and deceleration stop control during winding is performed. When the means is selected, the deceleration stop control (braking) is performed so that the deceleration time preset in the second deceleration stop control mode is obtained.

According to a fourth aspect of the present invention, the first and second aspects are provided.
In the deceleration stop control mode, a deceleration gradient is preset as a deceleration parameter, and the deceleration gradient set in the first deceleration stop control mode is larger than the deceleration gradient set in the second deceleration stop control mode. It is characterized by the following. According to the present invention, the motor is controlled to decelerate and stop according to the selected control means so as to have a preset deceleration gradient. When the deceleration stop control means during acceleration is selected, deceleration stop control (braking) is performed so as to have a large (rapid) deceleration gradient preset in the first deceleration stop control mode. When the deceleration / stop control means is selected, deceleration / stop control (braking) is performed so as to have a small (slow) deceleration gradient preset in the second deceleration / stop control mode.

According to a fifth aspect of the present invention, the first and second aspects are provided.
In the deceleration stop control mode, the deceleration time is set in advance as a deceleration parameter, and the deceleration time set in the first deceleration stop control mode is shorter than the deceleration time set in the second deceleration stop control mode. It is characterized by the following. According to the present invention, the motor is decelerated and stopped according to the selected control means so as to have a preset deceleration time.
When the deceleration stop control unit during acceleration is selected, deceleration stop control (braking) is performed so as to have a short deceleration time set in advance in the first deceleration stop control mode. Is selected, deceleration stop control (braking) is performed so that the long deceleration time set in advance in the second deceleration stop control mode.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments without departing from the spirit of the present invention. FIG. 1 is a schematic diagram showing a configuration of a spindle drive type winder according to the present embodiment,
FIG. 2 is a schematic diagram showing the state of the rotational speed of the bobbin holder,
3 is a functional block diagram showing deceleration stop control of the bobbin holder, FIG. 4 is a flowchart showing a first example of deceleration stop control, FIG. 5 is a flowchart showing a second example of deceleration stop control, and FIG. It is a flowchart which shows three examples.

The spindle-driven spinning winder shown in FIG. 1 has two bobbin holders (spindles) 1 and 2 on which a plurality of bobbins B are mounted, and a contact roller 3 which comes into contact with the bobbin holder BH1 at the winding position. It has. On each bobbin B, a yarn (filament yarn) spun from a spinning device on the upstream side is continuously wound. The two bobbin holders BH1 and BH2 are supported by a turret member (not shown), and are switched between a standby position and a winding position by rotation of the turret member. That is, when the package P on the bobbin holder BH1 at the winding position becomes full, the turret member rotates, and the bobbin holder BH1 at the winding position is at the standby position, and the bobbin holder BH2 at the standby position is at the winding position. It is designed to move to a position.

Since the contact roller 3 moves as the package P becomes thicker, the package P (bobbin holder BH
1, 2) is rotatably supported by a movable frame (not shown) which can be freely attached to and detached from the movable frame. A traverse device (not shown) for traversing the yarn in the axial direction of the bobbin B is provided on the movable frame. Is provided. A package in which a yarn layer is formed around the bobbin B is referred to as a package P.

The spinning winder has a driving motor 4 for driving one bobbin holder BH1, a driving motor 5 for driving the other bobbin holder BH2, and a driving motor for driving the contact roller 3. Motor 6. The driving motors 4 and 5 are connected to the rotating shafts of the bobbin holders BH1 and BH1 directly or via connecting members, respectively, and drive the bobbin holders BH1 and BH2 separately.
For example, an induction motor can be used as the driving motors 4 to 6, but this is not particularly limited to an induction motor, and a brushless motor or the like can be used.

Reference numerals 7 to 9 denote inverters provided in the respective driving motors 4 to 6, and the driving motors 4 to 6 rotate at speeds corresponding to the output frequencies from the inverters 7 to 9, respectively. The controller 10 outputs a speed command signal to each of the inverters 7 to 9.
9 outputs a motor drive signal according to the command signal input from the controller 10. With such a configuration, the controller 10 controls the rotation speed of each of the drive motors 4 to 6 via each of the inverters 7 to 9. The controller 10 is a central processing unit (CPU)
And a microcomputer including a memory (ROM and RAM), and executes a deceleration stop control function, which will be described later, by using an arithmetic function of the microcomputer.

For the controller 10, a setting device 11
, Various parameters can be set and input. The parameters set by the setting device 11 are
0 is stored in the memory. Parameters for deceleration described later (deceleration gradients a1, a2, b2 and / or deceleration time a3,
b1, b3) are also set and input from the setting device 11 to the controller 10.

Reference numerals 12 and 13 denote rotation speed detectors, which output a rotation speed detection signal corresponding to the rotation speed of the bobbin holder BH1 or BH2 to the controller 10. The controller 10 can detect the current speed of the bobbin holder BH1 or BH2 based on the rotation speed detection signals from the rotation speed detectors 12 and 13. The controller 10 also controls a traverse device (not shown), calculates a winding diameter from the detected bobbin holder speed during winding, and controls the traverse operation according to the winding diameter. For example, control is performed to prevent the ribbon winding by changing the traverse speed greatly every time a predetermined winding diameter is reached. 14 is a contact roller 3
The rotation speed detection signal from the rotation speed detector 14 is input to the controller 10 as in the case of the bobbin holder. Reference numeral 15 denotes a take-up stop switch provided on the base of the take-up machine, and outputs a take-up stop signal to the controller 10 when operated by an operator. As the winding stop switch 15, various types of known switches can be used.

Next, the bobbin holder B in the take-up winder
The speed control of H1 will be described. As shown in FIG.
After starting acceleration of one of the bobbin holders BH1 in the winding position, when the threading speed corresponding to the acceleration end speed is reached, a threading operation including manual threading by an operator is performed to wind the yarn. Picking is started. When the threading operation is completed, the traverse is started and the bobbin holder BH1 is started.
Winding will be started.

During winding, the rotation speed of the bobbin holder BH1 is controlled so that the rotation speed of the contact roller 3 becomes a predetermined speed (a constant target speed). That is, feedback control of the bobbin holder BH1 is performed based on the rotation speed of the contact roller 3. For example, the controller 10 detects the current speed of the contact roller 3 based on a rotation speed detection signal from the rotation speed detector 14, compares the detected speed with a preset target speed, and sets a PI according to the deviation. A control output value is calculated by control or PID control. By outputting a command signal corresponding to the calculated control output value to the inverter 7, the bobbin holder BH1 is controlled so that the contact roller 3 reaches the target speed.

Since the bobbin holder BH1 during the winding of the yarn is controlled so that the contact roller 3 has a preset constant speed, as shown in the winding period of FIG. Is gradually reduced. This is to maintain a constant peripheral speed of the package P whose outer diameter gradually increases. When a predetermined amount of yarn is wound on the package P and reaches the full tube, the turret member rotates and bobbin holder switching is performed, and the speed of the bobbin holder BH1 moved from the winding position to the standby position gradually decreases to zero. Braking to reduce. At this time, the bobbin holder 1 is braked according to a second deceleration stop control mode described later. During the bobbin holder switching, the yarn transfer from the bobbin holder BH1 to the bobbin holder BH2 is performed. By performing such bobbin holder switching periodically, the yarn spun continuously can be removed from each bobbin holder BH.
1, bobbins B on BH2 can be wound alternately and continuously. Prior to reaching the full state of the bobbin holder BH1, the bobbin holder BH2 at the standby position is accelerated to the yarn transfer speed (winding start speed) under the control of the controller 10.

In the example of FIG. 2 described above, the thread is hooked at the end of the acceleration. However, at the time of starting, the bobbin holder BH1 at the standby position is stopped and the bobbin holder BH1 at the winding position is moved from zero speed to the intermediate position. The speed may be accelerated to a speed (threading speed), at which time a threading operation including manual threading is performed, and then the speed may be accelerated from the intermediate speed to an acceleration end speed (winding start speed). In this case, after the end of the manual threading, while the bobbin holder BH1 accelerates from the intermediate speed to the acceleration end speed, the bobbin holder BH2 at the standby position accelerates from zero speed to the winding start speed (acceleration end speed). Is done. At this time, bobbin holder BH
No. 2 is accelerated at a stretch to the winding start speed without being once in a constant speed state at the intermediate speed. Bobbin holder BH2
Bobbin holder B is switched from the standby position to the winding position when bobbin holder speed has reached the winding start speed.
Winding for H2 is started. At this time, the incomplete package wound on the bobbin holder BH1 at a speed lower than the normal winding speed is taken out and discarded. When such two-stage acceleration is performed at the time of startup, it is sufficient that the state of the bobbin holder BH1 from the start of acceleration to the intermediate speed is determined to be accelerating. You may judge it as medium.

The normal winding process of the spinning winder has been described above. Next, a deceleration stop control function of the bobbin holders BH1 and BH2 including a deceleration process during acceleration will be described with reference to FIGS. I do. The deceleration stop control described below is also executed by the control of the controller 10 mainly composed of a microcomputer, similarly to the control during normal winding described above. First, a deceleration stop control function of the controller 10 will be described with reference to FIG. The controller 10 includes a full-package detecting unit 101, a selecting unit 102, a deceleration stop control unit 103 during acceleration, a deceleration stop control unit 104 during winding, and an alarm detection unit 105. The deceleration stop control unit 103 during acceleration has a first deceleration stop control mode, and the deceleration stop control unit 104 during winding has a second deceleration stop control mode different from the first deceleration stop control mode. .

The full package detecting means 101 is a means for detecting that the package P being wound has reached the full package, and is constituted by a means for measuring the elapsed time from the start of winding. As another example, for example, a means for directly or indirectly monitoring the package diameter during winding can be configured. Full package detection means 1
01, a full-package detection signal is output to the winding-time deceleration stop control unit 104, and the winding-time deceleration stop control unit 104 outputs a control signal to the inverter 7 in accordance with the second deceleration stop control mode. Is output.

The selection means 102 is provided with the winding stop switch 15
When the take-up stop signal is inputted from the controller, the deceleration stop control means 103 during acceleration or during take-up is determined based on the take-up state at that time, that is, whether the bobbin holders BH1 and BH2 are accelerating or taking up. An operation signal is output to one of the deceleration stop control means 104. That is, according to the determination result of the winding state, either the deceleration stop control unit 103 during acceleration or the deceleration stop control unit 104 during winding is selected. Here, the selection means 102 determines the winding state separately for each of the bobbin holders BH1 and BH2, and according to the respective determination results, controls the deceleration stop control means 10 during acceleration for each of the bobbin holders BH1 and BH2.
3 or the winding-time deceleration stop control means 104 is selected.

The selecting means 102 always recognizes the winding state based on the command frequency for the inverters 7 and 8, and recognizes whether the bobbin holders BH1 and BH2 are accelerating or winding based on the state. I can do it. That is, it is determined that the period in which the command frequency gradually increases is an acceleration period (during acceleration), and the period in which the command frequency gradually decreases according to a predetermined function is a winding period (during winding).

Upon receiving the operation signal from the selection means 102, the deceleration stop control means 103 during acceleration accelerates a first preset operation.
A control signal (rotation command signal) is output to the inverter 7 or 8 for the bobbin holder BH1 or BH2 in accordance with the deceleration stop control mode. Similarly, during winding, deceleration stop control means 104
Receives an operation signal from the selection means 102, and outputs a control signal (rotation command signal) to the inverter 7 or 8 for the bobbin holder BH1 or 2 according to a preset second deceleration stop control mode. Incidentally, the alarm detecting means 105
Is a means for detecting the occurrence of an alarm such as an abnormality (trouble) in the winder. When any alarm is detected, an alarm occurrence signal is transmitted to the selection means 102. When the alarm generation signal is input from the alarm detection means 105, the selection means 102 responds to the winding state of each of the bobbin holders BH1 and BH2 in the same manner as when the winding stop signal is input from the winding stop switch 15. Control means 103,
104 is selected.

With the above-described configuration, when the winding stop switch 15 is operated, when it is detected that the full tank is reached, or when an alarm is generated, the deceleration stop control unit 103 during acceleration is used. During winding, the bobbin holder driving motors 4 and 5 are decelerated and stopped (brake) by the deceleration stop control means 104 via the inverters 7 and 8. When the winding is stopped, the contact roller 3 and the traverse device are stopped in a time shorter than the deceleration time by the deceleration stop control means 103 during acceleration. Thereby, when the winding stop operation is performed during acceleration of one of the bobbin holders BH1 at the time of startup,
The state in which the contact roller 3 or the traverse device continues to be driven even after the bobbin holder BH1 stops can be avoided. During the winding, the contact roller 3 rotating while being in contact with the bobbin B (package P) on the bobbin holders BH1 and BH2.
When the take-up stop signal is input, the deceleration stop control is performed after separating from the bobbin B (package P).

During the deceleration stop control of the bobbin holder driving motors 4 and 5, the rotation speed detection signals from the rotation speed detectors 12 and 13 are taken into the acceleration deceleration stop control means 103 or the winding deceleration stop control means 104. The deceleration stop control can be performed while confirming whether the motors 4 and 5 match a predetermined deceleration locus.

Next, a first example of deceleration stop control by the controller 10 as shown in FIG. 3 will be described with reference to the flowchart of FIG. In the method of the first example shown in FIG. 4, the first deceleration stop control mode uses a deceleration gradient a as a deceleration parameter.
1 and the second deceleration stop control mode has a deceleration time b1 as a deceleration parameter. As a processing procedure, first, it is continuously checked whether or not a take-up stop signal is input (step 1). When the take-up stop signal is input (Yes in step 1), the current bobbin holder BH1 is selected by the selection means 102. It is determined whether or not is accelerating (step 2). If the vehicle is accelerating (Yes in step 2),
The first deceleration stop control mode is selected and deceleration stop control is performed. At this time, for example, the braking is performed so as to have a constant deceleration gradient a1 from the point A in FIG. 2 to the speed zero (see a dashed line in FIG. 2).

If it is determined in step 2 that the vehicle is not accelerating (No in step 2), the second deceleration stop control mode is selected and deceleration stop control is performed. At this time,
For example, during the period from the point B in FIG.
It is braked to become 1 (see the dashed line in FIG. 2).
When the take-up stop signal is input at the point B in FIG. 2, the bobbin holder BH1 during take-up is decelerated and stopped according to the second deceleration / stop control mode. BH2 is controlled to decelerate and stop from the time point C in the figure according to the first deceleration and stop control mode so as to have a deceleration gradient a1 (see the dashed line in FIG. 2).

According to the method of the first example as described above, the first
And the second deceleration stop control mode, one (first deceleration stop control mode) has a deceleration gradient a1 as a deceleration parameter, and the other (second deceleration stop control mode) has a deceleration time b1. However, the first deceleration stop control mode may have a deceleration time, and the second deceleration stop control mode may have a deceleration gradient.

Next, a method of a second example of the deceleration stop control will be described with reference to FIG. In FIG. 5, step 11
Steps 14 to 14 are the same as those in FIG.
In the method of the second example, unlike the method of the first example, the first method
The second deceleration stop control mode has deceleration gradients a2 and b2 (a2> b2) as deceleration parameters. Therefore, in steps 13 and 14, deceleration stop control is performed so as to have preset deceleration gradients a2 and b2, respectively. Here, since a2> b2,
In the case of deceleration during acceleration, the speed is decelerated more rapidly than in the case of deceleration during winding.

Next, a method of a third example of deceleration stop control will be described with reference to FIG. In FIG. 6, step 21
Steps 24 to 24 are the same as those in FIGS. In the method of the third example, unlike the methods of the first and second examples, the first and second deceleration stop control modes respectively use deceleration times a3 and b3 (a3 <b3) as deceleration parameters.
have. Therefore, in steps 23 and 24, deceleration stop control is performed so that the deceleration times a3 and b3 are set in advance. Here, since a3 <b3, the vehicle is stopped in a shorter time when decelerating during acceleration than when decelerating during winding.

Although the deceleration stop control methods of the first to third examples have been described above, for example, the following modified example can be considered as the method of the fourth example. Since the inertia of the rotating body is substantially constant during acceleration, when decelerating and stopping during acceleration, the rotation speed and the deceleration time are controlled so as to have a proportional relationship (constant deceleration gradient), After the multiplication, the inertia of the rotating body gradually increases, and the deceleration / stop control may be performed based on a deceleration / stop control function that takes this into account. According to the method of the fourth example, the bobbin holder BH1 is stopped with a minimum deceleration time (braking time) while preventing an emergency stop (trip) of the inverter due to an overcurrent during the entire period during acceleration and winding. Can be done.

Although only one bobbin holder BH1 has been described in the first to fourth examples, similar control processing is performed for the other bobbin holder BH2 as described above. Therefore, each bobbin holder BH1, BH2
, A deceleration stop control process corresponding to each winding state is performed. In the deceleration stop period in the methods of the first to fourth examples, not only linear deceleration but also deceleration stop (braking) in a curved line in which the deceleration gradient gradually changes or in a polygonal line in which the deceleration gradient changes in the middle. You may do so.

As described above, in the present embodiment, in the controller (speed control device) 10 of the winding machine including the motors 4 and 5 for driving the bobbin holders BH1 and BH2 on which one or a plurality of bobbins B are mounted. Deceleration stop control means 103 for decelerating and stopping the bobbin holder driving motors 4 and 5 in accordance with a first deceleration stop control mode; and a driving means for controlling the drive in accordance with a second deceleration stop control mode different from the first deceleration stop control mode. The take-up deceleration stop control means 104 for controlling the motors 4 and 5 to decelerate and stop, and the bobbin holder is accelerating or taking up when a take-up stop signal is inputted or an alarm generation signal is inputted. Deceleration stop control means 103 during acceleration or deceleration stop control means 1 during winding based on
Since the selection means 102 for selecting any one of the bobbin holders 04 is provided, it is possible to quickly stop the bobbin holders BH1 and BH2 during acceleration. Therefore, when performing the deceleration stop control, the emergency stop of the inverter due to the overcurrent can be prevented, and the efficiency of the winder can be improved without wasting a waiting time.

[0044]

According to the first aspect of the present invention, when the deceleration stop control of the bobbin holder is performed, the bobbin holder is quickly stopped while the emergency stop of the inverter due to the overcurrent is reliably prevented, and the efficiency of the winder is reduced. Can be improved.

According to the second aspect of the present invention, since each bobbin boulder is decelerated and stopped in accordance with the winding state, for example, when one is being wound and the other is being accelerated immediately before bobbin holder switching. Even if there is, the bobbin holder during acceleration can be decelerated and stopped in a short time without useless deceleration time. In other words, the bobbin holder being accelerated is stopped before the bobbin holder being wound, and the inverter on the bobbin holder side being accelerated can be reliably prevented from being emergency stopped due to overcurrent.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a spindle drive type winder according to the present embodiment.

FIG. 2 is a schematic diagram showing a state of a rotation speed of a bobbin holder.

FIG. 3 is a functional block diagram showing deceleration stop control of the bobbin holder.

FIG. 4 is a flowchart illustrating a first example of deceleration stop control.

FIG. 5 is a flowchart illustrating a second example of deceleration stop control.

FIG. 6 is a flowchart illustrating a third example of deceleration stop control.

[Description of References] BH1, BH2: bobbin, P: package, 1, 2, bobbin holder, 3, contact roller, 4, 5: motor for driving bobbin holder, 6: motor for driving contact roller, 7 to 9: inverter, 10 ... Controller, 11 ... Setting device, 15 ...
Take-up stop switch, 102: selection means, 103: deceleration stop control means during acceleration, 104: deceleration stop control means during winding,
105 alarm detection means

Claims (5)

[Claims] 1. A speed control device for a winder having a motor for driving a bobbin holder on which one or a plurality of bobbins are mounted, wherein during deceleration and stop control of a bobbin holder driving motor is performed according to a first deceleration and stop control mode. A deceleration stop control means, a winding deceleration stop control means for performing deceleration stop control of the drive motor in accordance with a second deceleration stop control mode different from the first deceleration stop control mode, and a winding stop signal are inputted. Selection means for selecting either the deceleration stop control means during acceleration or the deceleration stop control means during winding, based on whether the bobbin holder is accelerating or winding when the alarm generation signal is input. And a speed control device for a winder. 2. A switchable position between a winding position and a standby position, each of which is separately connected to a driving motor.
Speed of a winding machine that includes a bobbin holder and that, when a package on one bobbin holder at the winding position reaches a full state, the yarn is transferred by switching the bobbin holder to start winding on the other bobbin holder. In the control device, deceleration stop control means during acceleration for deceleration stop control of the drive motor according to a first deceleration stop control mode;
A take-up deceleration stop control means for controlling the drive motor to decelerate and stop according to a second deceleration stop control mode different from the first deceleration stop control mode; When input, based on the winding state of each bobbin holder, each bobbin holder is provided with a selecting means for individually selecting either the deceleration stop control means during acceleration or the deceleration stop control means during winding. A speed control device for a winder, characterized in that: 3. A deceleration gradient as a deceleration parameter in one of the first and second deceleration / stop control modes, and a deceleration time as a deceleration parameter in the other deceleration / stop control mode. 3. The speed control device for a winder according to claim 1, wherein the speed control device is set in advance. 4. A deceleration gradient is preset in the first and second deceleration stop control modes as a deceleration parameter.
The deceleration gradient set in the first deceleration stop control mode is the second deceleration gradient.
3. The speed control device for a winder according to claim 1, wherein the speed gradient is larger than a deceleration gradient set in the deceleration stop control mode. 5. A deceleration time is preset as a deceleration parameter in the first and second deceleration stop control modes,
The deceleration time set in the first deceleration stop control mode is the second deceleration time.
3. The speed control device for a winder according to claim 1, wherein the speed is shorter than the deceleration time set in the deceleration stop control mode.