JPH01267268A - Constant tension takeup roller and winding control method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a constant tension winding device and a winding control method for suitably winding a filament such as an enameled wire, particularly a thin filament. It is.

[Prior Art] Generally, a winding device as shown in FIGS. 4 and 5 is used to wind up a filamentous body such as an enameled wire.

The filament 1 is taken up by the take-up capstan 2a of the take-up R2, and wound onto the bobbin 5 of the winder 3 via the traverser 4. In Figure 6, 8 rotates the bobbin 5 to keep the tension of the filament 1 constant. This is a winding torque motor that winds the winding while keeping it within the range.

The traverser 4 is fitted onto a helical shaft 10 that is rotated by a traverse movement motor 9, and reciprocates from side to side in the figure by forward and reverse rotation of the helical shaft 10, thereby orderly winding the filament 1 around the bobbin 5. Reference numerals 11 and 12 indicate limit switches, which are used to reverse the rotation of the motor 9 when the traverser 4 moves while traversing the filament 1 and reaches the collar 6 or 7, thereby moving the filament in the opposite direction. belongs to.

The filament 1 is wound up using the winding device as described above, and when the bobbin 5 is fully wound, it is replaced with a new empty bobbin and the winding is performed again. It was done like this.

That is, after the empty bobbin 5 is installed, the winding motor 8 is left in a rotating state with no load, as shown in FIG. To start winding by winding the end of the filament 1 as shown in FIG. In this state, the motor 8 is stopped, the filament 1 is wound around the bobbin 5, and then the load is removed.

After the load is removed, the motor 8 increases its rotation according to its own characteristics and enters a steady state, but from a stopped state to a steady state it undergoes the behavior shown in FIG. 7.

Figure 7 (a) shows the bobbin 5 from the stopped state in figure 6 (b).
has started to rotate, the number of rotations is low, and the filament 1 still has slack and is in a state of zero tension. As it is, the torque motor 8 continues to increase its rotation, and the rotation speed rises without tension, and when it reaches its peak, the filament 1 is stretched and torque is applied (Fig. 7 (b)). The rotation is continued at a rotation speed that maintains the optimum tension for winding the strip 1. (Fig. 7 (c)) [Problem to be solved by the invention] As can be easily understood from the above, at the moment when the state shown in Fig. 7 (b) is reached, the striated body, which had previously been under zero tension, The maximum tension is instantaneously applied to 1.

If the wire diameter is thick enough, even the instantaneous tension load mentioned above will not cause a problem. However, with the recent advancement and precision of electronics technology, for example, the enamel used for this The wire diameter of wires, etc. is becoming increasingly ultra-fine, and wire diameters of 100 μm or less have appeared. For this reason, the maximum tension f′ at the rotational peak at the beginning of winding, which did not pose much of a problem in the past! , 'R', a disconnection as shown in Figure 7 (b) began to appear. This behavior is not limited to the above-mentioned beginning of winding, but also occurs when attempting to increase the winding speed in the middle of the winding operation, resulting in abnormalities such as wire breakage, wire elongation, and even deformation. It became so.

In order to solve the above-mentioned problems, it is possible to prevent the rotational speed of the bobbin from increasing rapidly, thereby preventing large tension fluctuations from occurring in the filament 1, but this will reduce work efficiency. However, it is not preferable from a cost standpoint.

Furthermore, conventionally, alternating current is used as the driving power source for the motor 8, and voltage adjustment is performed by a slider. The speed is slow and unstable, and precise adjustment is not possible.

The present invention has been made in view of the above-mentioned circumstances, and is intended to provide a wire winding device that does not apply tension fluctuations to the wire body at the beginning of winding the wire body or when the linear speed increases, and maintains a constant tension at all times. The present invention aims to provide a new constant tension winding device that can perform winding work with tension.

[Means for Solving the Problems] The present invention uses a DC motor instead of a conventional AC motor as a motor for rotating a bobbin, utilizes its excellent follow-up characteristic to voltage changes, and utilizes the rotational speed signal of the motor. is inputted into the arithmetic and control device, and a detection means for detecting the drawing line speed of the drawing machine is separately provided, and the detection signal is inputted to the arithmetic and control device, and based on these signals, the drawing line speed and the winding line speed are determined. Calculate the DC voltage required to tune the
The structure is such that the calculation result can be applied to the DC motor.

With this, the arithmetic and control unit constantly monitors the take-up wire speed and the winding wire speed, and performs synchronized control of these to eliminate tension fluctuations in the filament.

[Example] The present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory sketch showing a specific configuration of a winding device according to the present invention.

The filament 1 is taken up by a take-up capstan 2a of a take-up machine 2, sent to a take-up machine 3 at a constant linear speed, and wound onto a bobbin 5 which is being rotated by a take-up motor 8 constituted by a DC motor. taken.

In the figure, reference numeral 9 denotes a traverse drive motor that moves forward and backward a fixed base to which a motor 8 is fixed. In this embodiment, the guide 13 that guides the filament 1 is kept in a fixed state, and the bobbin 5 is moved in the traverse direction. The structure is such that traverse is performed by moving the drive motor 9 forward and backward in the axial direction. 11 and 12 are the fifth
It is a traverse inversion limit similar to limit switches 11 and 12 in the figure, and 20 is an arithmetic control device.

In the present invention, a winding rotation speed detection sensor is installed on the winding machine 3 side, and the winding rotation speed signal A detected by the sensor is input to the arithmetic and control device 20, and the winding machine 211! A take-up rotation speed detection sensor is installed at I, and the signal B is similarly input to the arithmetic and control unit 20.

Next, the winding operation according to the present invention will be explained with reference to FIGS. 2 and 3.

First, the arithmetic and control device 20 detects the rotation signal B of the take-up machine 2, calculates the DC voltage necessary to give the take-up machine 3 rotation in synchronization with the rotation signal B, outputs the signal C, and outputs the signal C to the DC motor 8. A DC voltage for synchronously rotating the taker 3 is applied.

When the take-up and winding operations are synchronized as described above, the operator sets the wire body 1 to be wound on the bobbin 5.

In this way, the arithmetic and control device 20 performs no-load tuning based on the take-up rotation signal B and the take-up rotation signal A, and the striatum 1.
Controls the winding of the extra length.

The winding rotation of the unloaded bobbin 5 is faster than the take-up rotation until the entire extra length of the filament 1 is wound. At that time, the arithmetic and control unit 20 adjusts the winding speed while taking in the take-up rotation signal B. Since the control signal C continues to be output, an instantaneous excessive tension is not applied to the filament body 1 at the moment the bobbin 5 winds up the slackened excess length as in the conventional example.

Since it can be known that the tension of the filament 1 has increased to a steady state by a decrease in the rotation signal A, the arithmetic and control unit 20 applies a load necessary for the subsequent winding operation to the winding motor 8. Therefore, the DC voltage can be increased using the signal C, and thereafter, the winding control can be performed by performing load tuning using Nos. 18 A, B, and C as shown in FIG.

In the present invention, since a DC motor is used as the winding motor 8 instead of the conventional AC motor, its followability is quick, and synchronization control can be performed quickly even in an extremely short period of time such as at the start of winding. , sufficient reliability can be established.

[Effects of the Invention] As described above, according to the device according to the present invention, it is possible to easily and quickly synchronize the linear speeds of take-up and winding in the winding device, and in particular, it is possible to easily and quickly synchronize the linear speed of the take-up and winding in the winding device. It is of great significance that we were able to eliminate wire breakage and other troubles that occurred during the winding of wire bodies, and in today's industry, where demands for higher and more precise equipment to which wire bodies are applied are becoming more severe. There is something to be appreciated for its value.

[Brief explanation of the drawing]

FIG. 1 is an explanatory sketch showing a specific example of the device according to the present invention;
2 and 3 are explanatory diagrams of the tuning operation in the present invention, and FIGS. 4 and 5 are explanatory diagrams showing a conventional wire winding device,
6 and 7 are explanatory diagrams showing the situation at the beginning of winding in a conventional winding device. 2: Take-up machine; 3: Winding machine; 5: Bobbin; 8: Winding DC motor; 9: Traverse drive motor; 20: Arithmetic control unit. Agent Patent Attorney Fujio Sato Figure 1 I: **fE 2: I 14 to I 3: Officer line 5: Wide bin 8; lips hM4 direct fire motor, b rubber base? B Homare〃Motor 20: 1 Snore Gigu qr 1 Kai I No. 20 2゜Figure 3Figure 4Figure 5 2a Figure 5

Claims (2)

[Claims] (1) A DC motor that rotates a bobbin that winds the filament, a signal output device that sends out the rotational speed of the motor as a signal, an arithmetic control device that receives the signal, and a take-up device that takes over the filament. and a take-up speed detection device that detects the take-up speed and inputs the detection signal to the arithmetic and control device, and the arithmetic and control device calculates a DC voltage to be applied to the DC motor based on the take-up speed signal. A constant tension winding device configured to output a control signal and synchronize take-up speed and winding speed. (2) When starting to wind the filament with the bobbin set in the winding machine, a DC voltage application signal is calculated by the arithmetic and control device based on the rotation signal of the winding machine to synchronize the rotation of the winding machine. The output is output to the take-up DC motor, the winding and take-up rotations are synchronized, and the end of the filament is wound around the bobbin. A winding control method in which, after confirming that the tension has reached a steady state, voltage is applied to the winding motor for steady winding, and then winding is performed by synchronizing winding and take-up.