JPS5941906B2 - Wire winding control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding control method for winding a relatively thin wire rod fed out from a wire drawing machine into a winding machine, and particularly relates to a winding control method for winding a relatively thin wire rod fed out from a wire drawing machine into a winding machine. Contains information on control methods when starting the machine.

In conventional technology, when the winding machine is operated in synchronization with the wire drawing machine, the steepest point of the slope when the wire drawing machine starts up is slower than that of the winding machine, so the speed ratio is matched with the wire drawing machine only when the winding machine is started up. The wire was connected to the wire drawing machine by a direct coupling device such as a clutch, and when the speed became stable, the direct coupling device was removed and the winding machine started winding with its own motor.

However, in this conventional technology, the wire drawing machine and the winding machine are mechanically connected, so the mechanical system is complicated, the installation space for the equipment is large, and the equipment cost is high. Since the wire drawing machine is connected to a winding machine, it is impossible to change the speed ratio of the wire drawing machine, so the wire drawing machine has the disadvantage that the speed ratio cannot be changed minutely according to the wire diameter and wire speed. An object of the present invention is to provide a wire rod winding control method that does not require direct connection to a wire drawing machine at startup, reduces equipment costs, and allows fine adjustment of the wire drawing machine. Melt.

Embodiments of the present invention will be described in detail with reference to the drawings.
The figure schematically shows a control system used in the wire rod winding control method according to the present invention, in which the wire rod 10 is drawn by a wire drawing machine 14 driven by a drive motor 12 driven by an induction motor. A wire storage device 16 consisting of a looper is
Then, it passes through a traverser 18 and is wound up by a winding machine 20.

The winder 20 is driven by a DC motor 22, and the DC motor 22 is current-controlled from a power source 24 via a drive circuit 26.

The drive circuit 26 generates a drive current that is controlled by a command from an operational amplifier 28, which has three current setters VRI, VR2, and VR2, each consisting of a variable resistor.
Drive signals supplied from VR3 via respective relay contacts a, a2, a3 and positions supplied from a position detector 30 that detects the position (angle) of wire storage device 16 via converter 32 and relay contact a3 The signal is calculated in response to a feedback signal from the detector 34 that detects the current supplied from the drive circuit 26 to the DC motor 22. When the winder 20 is started, the relay contacts A, , a2, and a3 are sequentially closed at predetermined time intervals.

First, at startup, relay contact A is connected to T, seconds (within 1 second).
When closed, the steady winding current (3~
A command signal for generating 4A) is supplied to the drive circuit 26 via the operational amplifier 28, and the DC motor 22 is operated steadily to synchronize the rise with respect to the wire drawing machine. (See a1 in Figure 2). Then, at the same time as relay contact A is opened, relay contact A2 is connected to T2.
seconds (15 to 20 seconds), a command signal to generate an accelerating current (10 to 10 A) set by the current setting device R2 is supplied to the drive circuit 26 via the operational amplifier 28, and the DC motor 22 is connected to the wire drawing machine. 14 (A2 in Figure 2)
reference).

In this way, after T2 seconds have elapsed, which is the point at which the wire drawing machine 14 has stabilized, relay contact A is opened, and at the same time relay contact A3 is closed, and the steady operation command signal set by current setting device VR is calculated. It is supplied to the rice cloth container 28. At this time, the signal from the position detector 30 is also supplied to the operational amplifier 28, so the operational amplifier 28 adds a predetermined compensation current matched to the position of the wire storage device 16 to the steady operating current, and The addition signal is supplied to Therefore, the DC motor 22 is
3, the wire rod 10 is wound with a predetermined tension by being driven by a drive current that changes little by little depending on the position of the wire storage device 16. Since the compensation current usually fluctuates in the range of 0 to 3 A, the drive current is 3 to 7 A during steady operation.According to the present invention, as described above, the winding machine can be directly connected to the wire drawing machine even at startup. It can be started at the same time as the wire drawing machine starts up.Therefore, there is no need for a mechanical system between the winding machine and the wire drawing machine, and the amount of wire stored between the two is small, so less equipment is required. In addition, the equipment space is small, the equipment cost is low, and the workability is good, and since the winder is torque controlled by a DC motor, the inertia is small and the adaptability is good, so the winder can be used easily. It is easy to control, and the winding machine has three-stage tension control using a current-strength leg, so even beginners can easily operate it, and the speed of the wire drawing machine can be controlled independently of the winding machine, which is a practical benefit. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic system diagram of an apparatus used in the present invention, and FIG. 2 is a time-drive current characteristic diagram when starting a winder according to the method of the present invention. 10...Wire rod, 14...Wire drawing machine, 16
... wire storage device, 20 ... winding machine, 22
...DC motor, 26..., drive circuit, VR,, R2, R3... current setting device, A,,
a2, a,...Relay contact.

Claims (1)

[Claims] 1. When winding the wire fed from the wire drawing machine onto a winding machine, the winding machine is driven by a DC motor under current control, and the DC motor first performs steady winding within t_1 seconds. Starts with current,
Thereafter, within t_2 seconds, the wire drawing machine is operated with an accelerating current that follows the rising curve of the wire drawing machine, and then a compensation current matched to the position of the wire storage device is added to the steady winding current to perform steady operation. Wire rod winding control method. 2 The above t_1 seconds is 1 second, and the above t_2 seconds is 15~
The wire rod winding control method according to claim 1, wherein the winding time is 20 seconds. 3. The wire rod winding control method according to claim 1 or 2, wherein the steady winding current is 3 to 4 A, and the accelerating current is 10 to 12 A.