JPH0617194B2 - How to operate the yarn switching winder - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for operating a yarn winding winder. More specifically, the present invention directly drives a bobbin holder equipped with a bobbin by a plurality of drive motors via an inverter,
When the number of yarns wound on the bobbin on one bobbin holder reaches a predetermined amount, multiple bobbin on the other bobbin holder are installed with a plurality of switching winding machines that switch winding of the yarns,
The present invention relates to a method of operating a plurality of switching winders.

[Conventional technology]

In the conventional switching winder, a method is employed in which an inverter device is connected to each of a plurality of bobbin holders and the tension of the winding yarn or the peripheral speed of the package is controlled to a predetermined value.

[Problems to be solved by the invention]

When a plurality of such switching winders are installed and operated, the conventional technique has the following problems.

An inverter device is required for each motor that drives a plurality of bobbin holders, resulting in a large installation space and high cost. That is, of the plurality of inverter devices,
Despite the fact that half of them are dormant except when switching,
As shown in FIG. 6 and FIG. 6, the number of inverter devices (capacity is C) twice as many as the number of switching winding machines is required.

Also, in order to compensate the power supply when an instantaneous power failure occurs,
A capacitor is required for each of the plurality of inverter devices, the installation space for the capacitor is large, and the cost is high.
That is, as shown in FIG. 6, in order to compensate for the current C, the number of capacitors having the capacity C is twice as large as the number of switching winders.

When the drive motor is regeneratively braked through the inverter device when the bobbin holder is stopped, each inverter device requires a regenerative resistor, which requires a large installation space and high cost.

[Means for solving problems]

In the present invention, the spindle drive type switching winder has a plurality of bobbin holders, and when the number of yarns wound on one bobbin holder reaches a predetermined amount, the yarns are sequentially switched to another bobbin holder. A method in which a plurality of drive motors are connected to a plurality of bobbin holders, the drive motors are connected to an inverter device including a converter section and an inverter section, and a plurality of spindle drive type switching winders are operated. In, the inverter unit of the inverter device for driving the plurality of drive motors is composed of a plurality of inverter units connected in parallel corresponding to the plurality of drive motors of the plurality of switching winding machine, One converter unit is provided in common for the plurality of inverter units, and the plurality of winders are sequentially arranged at time intervals T shown in the following formula (1). Dynamic and, by a method of operating a yarn switching winding machine as drive time of the drive motor of the plurality of switching winder switches the yarn so as not to overlap, to solve the above problems.

T _s ≤ T ≤ T ₀ · u _s / u (1) where T _s : drive motor start time T ₀ : predetermined amount winding time u _s : number of units to start at the same time u: converter unit of inverter device It is the number of common winding machines.

Further, in the present invention, it is preferable that the capacity Z of the converter section of the inverter device satisfies the following expression (2).

u _s I ₁ + u (I ₁ + I ₂ ) / 2 ≦ Z <2uI ₂ (2) where u _{s is} the number of the bobbin holders on the backup side that are simultaneously activated at the time of switching u: The converter section of the inverter device is common Number of winding machines I ₁ : winding start current in _one winding machine I ₂ : winding end current in one winding machine.

Further, in the present invention, when the instantaneous power failure compensation function or the regenerative braking function is provided, the compensation capacitor or the regenerative resistor is commonly connected to the plurality of inverter units.

[Work]

In a switching winder in which a plurality of bobbin holders are driven by a motor with an inverter device interposed, by focusing on the operating time of the inverter device connected to each bobbin holder and the state of its load By making the converter section of the device common to multiple units,
The capacity of the inverter device is 1/2 to 2/3 of the conventional capacity
The installation space of the capacitor for instantaneous power failure compensation is about half that of the conventional one. Also,
Regenerative braking resistance capacity and installation space are 1/1
A power supply with a low cost can be provided, which can be about 0 to 1/2.

Moreover, even when a plurality of such change-up winding machines are installed, the above advantages can be sufficiently exerted by sequentially activating at a specific timing as in the present invention.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to examples. Fourth
FIG. 1 is a front view of a peripheral speed control type turret type automatic switching winder according to the present invention. A turret table 13 is rotatably supported on a machine frame 12, and two turret tables 13 are mounted on the turret table 13. Bobbin holders 11a and 11b are rotatably supported. The bottle holders 11a, 11
b Each drive motor 8w ₁ a is connected to 8w ₁ b (see FIG. 1) is rotated at a predetermined speed.

The traverse device 14 includes a traverse guide (not shown) that traverses the yarn 17 from side to side. The contact roller frame 15 is brought into contact with a bobbin mounted on the bobbin holders 11a and 11b or a package 18 formed on the bobbin, and a contact roller 16 for measuring the peripheral speed of the package 18 is rotatably supported. ing. The traverse device 14 and the contact roller frame 15 can move up and down with respect to the turret table 13.

In the conventional automatic switching winder, as shown in FIG. 5, respectively converter unit 3w ₁ a, 3w ₁ b and the inverter unit 7w ₁ a, an inverter apparatus comprising a 7w ₁ b is, the driving motors 8w ₁ a , 8w ₁ b. The relays 1w ₁ a and 1w ₁ b are for powering on and are connected in series to the fuses 2w ₁ a and 2w ₁ b. Relays 4w ₁ a and 4w ₁ b are relays 1w ₁ a and 1w
_A few seconds after turning on 1b, the contact is closed and relay 4w ₁
a, resistance to rush current immediately after 4w ₁ b is turned 5w ₁ a,
To thereby prevent the 5w ₁ b.

In the conventional automatic switching winder, an inverter device is installed for each drive motor, the installation space is large, and the capacity of both inverter devices is set to withstand the maximum load in the steady winding state. The equipment cost is high.

Furthermore, as shown in FIG. 6, in the conventional automatic switching winding machine, the drive motor 8w ₁ a, attempts to consume the regenerative energy generated when braking the 8w ₁ b, detects the occurrence of regenerative energy transistor 10w ₁ a, 10w ₁ b and regenerative resistor 9w ₁ a, 9 to to switching
There is a need to install a w ₁ b to each inverter device, installation space is large, the equipment cost is expensive.

Also, to compensate for a few seconds when the instantaneous power failure occurs, it is necessary to provide further capacitor 6w ₁ a to compensate when driving during or other overload of the drive motor, 6w ₁ b to each inverter, the installation space Large and expensive equipment cost.

The load characteristic of the spindle drive type switching winder is the second
It is as shown in FIG.

Drive motor 8w connected to one bobbin holder 11a
Focusing on ₁ a, usually 2-3 at the start of the drive motor
Double the starting current of I ₀ (not shown) flows for a short time, and after the starting time T _s of the drive motor, the steady winding state is set. At this time, the package 18 formed on the bobbin attached to the bobbin holder 11a is small, and thus the current I ₁ at the beginning of winding has a small value. As the package 18 on the bobbin attached to the bobbin holder 11a becomes thicker,
The drive current of the drive motor 8w ₁ a increases along the curve A ₁ and reaches the maximum drive current I ₂ when the package 18 reaches the winding amount of the predetermined winding diameter.

When this state is reached, the bobbin holder 1 Start other drive motor 8w ₁ b, the bobbin holder 11b is speed increasing to a predetermined speed the winding of the yarn from Bonbinhoruda 11a
Switching to 1b, the winding of the yarn 17 is continued. The drive motor 8w ₁ b exhibits a load characteristic B ₁ similar to the load characteristic A ₁ of the drive motor 8w ₁ a.

Conventional drive motors 8w ₁ a is switched winder, 8w ₁ b
Connects the inverter to each, each inverter unit is set to the drive motors 8w ₁ a, 8w ₁ b capacity can cover individual drive currents of (C in Figure 2). Although the capacity of one inverter device is small, when viewed from each switching winder, since there are two inverter devices, a capacity of 2C is required.

The present inventor has one bobbin holder 11a becomes complete wound state, when the load current I ₂ of the drive motor 8w ₁ a is maximized, the other winding machine 8w ₁ b is a state winding starting load current A characteristic peculiar to the switching winder that I ₁ is the minimum,
And when operating a plurality of winders, paying attention to the fact that some inverter devices are in an operating state but the remaining inverter devices are in a resting state, and an inverter device for a plurality of winders (u units) Common converter section, each drive motor of the bobbin holder has an inverter section,
Of a plurality of winders, by the switch the yarn on the other bobbin holder from one bobbin holder by sequentially starting the predetermined number (u _s base), capacity and momentary power failure of the converter circuit of the inverter device the compensation capacitor can be greatly reduced, and the capacity of the braking regenerative resistor simultaneous switching number u _s base fraction (one in this embodiment)
It was found that the cost and the installation space of the switching winding machine can be significantly reduced by the above.

In the present invention, as shown in FIG. 1, the inverter unit 7w ₁ a of the inverter device, 7w ₁ b~7w ₈ a, 7w
₈ b each drive motor _{8w 1 a, 8w 1 b~8w 8} a, 8
While being installed corresponding to w ₈ b, whereas, the converter section of the inverter device (DC portion) 3 both drive motors 8w ₁
a, 8w ₁ b~8w ₈ a, it is installed one in common to 8w ₈ b. Capacity of the converter unit 3, (u = 8 units in the present embodiment) total number of operating units u of the winding machine, the simultaneous activation of the bobbin holder of the note side at the time of switching the number u _s (u _s = 1 in this embodiment
Table), the maximum load I ₂ in the steady winding state of either bobbin holder 11a or 11b and the load I ₁ at the start of winding the other bobbin holder 11b or 11a in the steady state, the capacity Z of the inverter, It is set in the range of u _s I ₁ + u (I ₁ + I ₂ ) / 2 ≦ Z <2uI ₂ .

As the inverter device, a known device such as one using a transistor or a thyristor in the inverter portion can be used.

In FIG. 1, the motor 8w ₁ with the relay 1 closed is shown.
The contact roller 16 is pressed against the package 18 wound around the bobbin holder 11a driven by a, the rotation speed of the contact roller 16 is detected, and a controller (not shown) is used so that the rotation speed of the contact roller 26 becomes a preset predetermined value. PI control is performed according to step No.).

That is, to convert the alternating current to direct current converter 3 of the inverter, the control circuit inverter unit 7w ₁ a (not shown) is converted into alternating current of a predetermined frequency is controlled motor 8w ₁ a second FIG - Driven along line A ₁ of a.

Then, the winder w ₂ has elapsed a predetermined time, the inverter unit 7w ₂ a is controlled, is converted into AC of a predetermined frequency, the driving motor 8w ₂ a linear A ₂ in FIG. 2 -a Driven along.

Hereinafter, the driving motor w ₃ a~w ₈ a are sequentially driven at predetermined time intervals in a similar manner.

As the time interval in which the winder is driven, in this embodiment, switching winder w ₁ a is winding machine w ₂ at the time is divided into equal intervals of time T ₀ until the Kanmaki a~w It is sequentially start the ₈ a.

When the package 18 is wound on the bobbin holder is driven by the winder w ₁ of the drive motor 8w ₁ a reaches a predetermined amount,
Drive motor is controlled by the inverter unit 7w ₁ b 8w ₁ b
The bobbin holder driven by is switched between yarns and driven along the line B ₁ .

Next, the brake is applied to motor 8w ₁ a rotational speed of the motor 8w ₁ a for driving the bobbin holder 11a is reduced at a predetermined gradient. When the motor 8w ₁ a deceleration, the motor 8
The back power acts from w ₁ a and acts on the converter section (DC section) 3 of the inverter device. This back power is detected by a detector (not shown), the transistor 10 is switched, and energy is consumed by the resistor 9 to prevent the inverter device from tripping or being damaged.

Energy is similarly consumed by the resistor 9 when the motor 8w ₁ b is braked.

Thereafter, similarly, the drive motor 8w ₂ b is sequentially driven at predetermined time intervals.
Drives ~8w ₈ b, switching the yarn, line B ₂ is driven along the .about.B _8, the motor drive was connected to the bobbin holder 8w ₁
The brake is applied to a to 8w ₁ a, and the back power is consumed by the resistor 9 during braking.

When the drive motor is driven, the current value becomes about twice the normal value for starting, but this is compensated by the capacitor 6.

If an instantaneous power failure occurs while winding the package 18, the electricity stored in the capacitor 6 (which may be a storage battery instead of the capacitor) is gradually discharged, and the drive motors 8w _{1 a to} 8w ₈ a or 8w ₁ are discharged. operation of b~8w ₈ b is continued. Next, when the power source is restored, a resistor 5 is provided so that the current gradually flows in order to prevent a rush current from being generated and damaging the transistor.

Further, when an instantaneous power failure occurs, the control circuit of the inverter device, the speed control circuit relay 1 and the like are backed up by a capacitor or a condenser (not shown), as described above.

In the above embodiment, the drive motor is set to 1 at a predetermined equal time interval.
Was to boot by platform, the time interval may be irregular intervals, or may be started simultaneously a plurality (u _s base) by. The number of winding machines u is 8 in FIG.
An example in which the number of winders and the number of winding machines u _{s that} are simultaneously activated is two is shown.

In addition to the bobbin holder drive motor of the winder, the converter unit may include a traverse device drive motor and an inverter device such as a feed roller (godet roller) upstream of the winder, and in this case, The required capacity may be added to each device.

[Advantages of the Invention] In the present invention, the inverter unit of a plurality of winders has a common DC unit, that is, a converter unit, and the converter units are sequentially activated at predetermined time intervals. The capacity in the range shown by the formula is sufficient, and the capacity can be reduced to about half that of the conventional device, and the cost can be reduced.

u _s I ₁ + u (I ₁ + I ₂ ) / 2 ≦ Z <2uI ₂ (2) The inverter section of a plurality of winders has a common converter section and is sequentially braked at predetermined time intervals. The capacity of the resistor that consumes energy when decelerating the package is the capacity of the number of winders that are decelerated at the same time.
It can be reduced from 1/2 to 1/10 of the conventional one, and the space cost can be reduced. Further, since the regenerative energy during braking can be used as energy by the other motor in operation, there is an effect of energy saving and there is an advantage that the resistance capacity can be further reduced.

The instantaneous power failure capacitor needs to prevent the voltage from completely dropping for 0.06 seconds, for example, and requires a space 1 to 1.5 times that of the inverter device. According to the present invention, the capacity of the converter unit may be the capacity of the number of winding machines that are simultaneously activated at the same time as the capacity of a plurality of simultaneously operating units, and it is possible to reduce the installation space and cost to about 1/2 of the conventional one. is there.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an inverter device of a yarn switching winder embodying the present invention, and FIG. 2A shows a current value when a bobbin holder is driven by a motor in a turret type automatic switching winder. FIG. 2B is a diagram of current values according to another embodiment, and FIG. 3 is a circuit diagram of an inverter device incorporating a regenerative braking function and an instantaneous power failure compensation function for implementing the present invention. FIG. 4 is a front view of a turret type automatic switching winder embodying the present invention, FIG. 5 is a circuit diagram of a conventional inverter device, and FIG. 6 is a regenerative braking function and instantaneous blackout compensation in the conventional system. It is a circuit diagram of an inverter device incorporating a function. 1 ...... relay, 2 ...... fuse, 3 ...... converter unit, 4 ...... relays, 5 ...... resistors, 6 ...... _{capacitor, 7w 1 a, 7w 1 b~7w} 8 a, 7w 8 b ...... inverter unit _{, 8w 1 a, 8w 1 b~8w} 8 a, 8w 8 b ...... motor, 9 ...... resistors, 10 ...... transistor.

Claims (4)

[Claims] 1. A spindle drive type change-up winding machine has a plurality of bobbin holders, and when the number of yarns wound on one bobbin holder reaches a predetermined amount, the yarns are sequentially switched to another bobbin holder. A method in which a plurality of drive motors are connected to a plurality of bobbin holders, the drive motors are connected to an inverter device including a converter section and an inverter section, and a plurality of spindle drive type switching winders are operated. In the above, the inverter unit of the inverter device that drives the plurality of drive motors is composed of a plurality of inverter units connected in parallel corresponding to the plurality of drive motors of the plurality of switching winders, One converter unit is provided in common for the plurality of inverter units, and the plurality of winders are sequentially started at time intervals T shown in the following formula (1). Switching winder operating method of the yarn, characterized in that to switch the yarn. T _s ≤ T ≤ T ₀ · u _s / u (1) where T _s : drive motor start time T ₀ : predetermined amount winding time u _s : number of units to start at the same time u: converter unit of inverter device Number of common winders 2. The method of starting a yarn switching winder according to claim 1, wherein the capacity Z of the converter section of the inverter device satisfies the following expression (2). u _s I ₁ + u (I ₁ + I ₂ ) / 2 ≦ Z <2uI ₂ ...
(2) where u _s : the number of simultaneous activation of the reserve bobbin holders at the time of switching u: the number of winders having a common converter unit of the inverter device I ₁ : winding start current I in _one winder I ₂ : Winding end current in one winder 3. A method of operating a yarn winding winder according to claim 1 or 2, wherein a capacitor for instantaneous power failure compensation is connected commonly to the plurality of inverter sections. 4. A method of operating a yarn winding winder according to claim 1, 2, or 3, wherein a regenerative resistor is commonly connected to the plurality of inverter sections.