JPH0862121A - Method and apparatus for evaluating slipperiness of enamel wire - Google Patents

Abstract

PURPOSE: To match the correlation perfectly among the slipperiness of enamel wire, the actual high speed mechanical winding performance and the convergence of a deflection coil by bringing a frictional body into frictional contact with an enamel wire at a desired angle through the use of a mechanism for regulating the rotational angle of a friction rod. CONSTITUTION: A test enamel wire 6 is sent out under a constant tension from a sending-out bobbin 14 mounted on a sending-out machine 7 and wound around a winding bobbin 13 through a guide pulley 8 and a friction body 10. The enamel wire 6 is given frictional resistance by means of the friction body 10 and the tension of the enamel wire 6 is measured by means of guide pulleys 8 and load cells 9 suspended in front and rear of the friction body 10. The measurement is inputted to an operating unit where the slipperiness of the enamel wire 6 is evaluated and a decision is made whether the enamel wire 6 is acceptable or not. Angle of the friction body 10 can be varied freely by means of a mechanism 11 for altering the rotational angle of a friction rod. Consequently, frictional resistance can be applied to a self-fusible enamel wire to be tested at an arbitrary angle including the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enameled wire slipperiness evaluation apparatus and an evaluation method thereof. More specifically, the present invention relates to an enameled wire slipperiness evaluation device and an evaluation method capable of evaluating the slidability of an enameled wire from the dynamic frictional resistance of a running enameled wire.

[0002]

2. Description of the Related Art Enameled wire is widely used as a magnet wire for electric equipment.

This enamel wire is manually wound or mechanically wound into an electric device coil. In recent years, manual winding is rare, and high-speed winding machines generally perform high-speed winding.

Recently, with the spread of satellite televisions, personal computers, workstations, etc., there have been remarkable developments in high-precision color displays.

In order to manufacture such a high precision color display deflection coil, first, a self-bonding enameled wire is wound into a mold, and then the wound coil is electrically heated.
Finally, it is manufactured by press molding.

It is important to minimize the amount of misconvergence during the process of press molding from the involvement of these.

Here, the misconvergence is greatly affected by the slip property of the self-bonding enamel wire. That is, the self-bonding enameled wire has a great influence on the slipping property of the enameled wire into the mold.

When the deflection coil is wound tightly, it becomes a barrel magnetic field to deteriorate the convergence, and conversely when it is wound roughly, it becomes a pincushion magnetic field to deteriorate the convergence. Therefore, it is important that the deflection coil is moderately wound. For this purpose, the self-bonding enameled wire used must have a uniform slip property in the longitudinal direction.

On the other hand, when performing high-speed winding with a high-speed winding machine,
Enameled wire passes through many wire guides of high speed winding machines. The enameled wire is required to have excellent slipperiness in order to smooth the passage of the wire guide and prevent the occurrence of contact scratches by the wire guide.

The slidability of the enameled wire is evaluated by measuring the static friction coefficient or the dynamic friction coefficient.

The inclined static friction coefficient test method and the Howell static friction coefficient test method are widely used for the static friction coefficient test method of the enameled wire.

FIG. 5 is a front view showing this conventional inclined static friction coefficient testing device, and FIG. 6 is a plan view showing a state in which an enamel wire is set on a moving side enamel wire setting jig,
FIG. 7 is an explanatory plan view showing a state in which the enameled wire is set on the fixed side enameled wire setting jig.

In FIGS. 5 to 7, 1 is a load cell, 2 is a constant speed moving base, 3 is a moving side enameled wire setting jig, 4 is a load, 5 is a fixed side enameled wire setting jig, and 6 is an enameled wire.

That is, in the inclined static friction coefficient testing device, the enamel wire is set on the fixed side enamel wire setting jig as shown in FIG. 7, and the enamel wire is set on the moving side enamel wire setting jig as shown in FIG. Then, these are crossed so as to form a # -digit shape, and the load 4 is placed on the slot. Then, the constant speed moving table 2 on which the load cell 1 is placed is pulled at an appropriate speed, and the change in tension at that time evaluates the slidability of the enamel wire.

In the Howell static friction coefficient test method, although not shown, one enameled wire is stretched in the lateral direction, and the other enameled wire is stretched in the longitudinal direction so as to come into contact with the one enameled wire stretched in the lateral direction. The coefficient of static friction is obtained from the mutual slidability.

On the other hand, as a dynamic friction coefficient measuring device for an enameled wire, a dynamic friction coefficient measuring device (not shown) manufactured by Heidon Co., etc. is commercially available.

However, since the static friction coefficient test method such as the inclined static friction coefficient test method and the Howell static friction coefficient test method can measure only the static friction coefficient, the slipperiness when traveling at high speed on an enameled wire such as a high-speed winding machine is correctly evaluated. I couldn't.

The Heidon dynamic friction coefficient measuring device measures the dynamic friction coefficient of a relatively short enameled wire, and also measures the dynamic friction coefficient of an enameled wire traveling at a relatively low speed, and is therefore 100 m / min. It was difficult to accurately grasp the slidability of the long enameled wire traveling at the above high speed along the longitudinal direction.

For this reason, even if the static friction coefficient and the dynamic friction coefficient measured by such a conventional measuring apparatus are at the same level, the correlation with the actual winding property is often poor.

Further, in the work of winding the enameled wire in the deformed mold like the mechanical winding work of the deflection coil of the television cathode ray tube and then press-molding the work, a very slight difference in slipperiness of the enameled wire causes a winding property. Greatly affect the. The static friction coefficient and the dynamic friction coefficient measured by the conventional measuring device cannot accurately judge the quality.

In particular, there was no evaluation test method for accurately judging the quality of the sliding property with the arm when the self-bonding enameled wire was read into the mold. In other words, in this high-speed machine winding, the self-bonding enameled wire receives friction in the vertical direction with respect to the arm and the mold, but there was no slipperiness evaluation method that receives such vertical friction.

In other words, in the conventional slipperiness evaluation test method, the slipperiness could not be remarkably and accurately evaluated even when the kind and the coating amount of the lubricating oil were changed on the surface of the enamel wire. As a result, the three relationships of the slipperiness of the enamel wire, the actual high-speed mechanical winding property, and the convergence of the deflection coil did not completely match.

[0023]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to solve the above-mentioned drawbacks of the prior art and to improve the slidability of an enameled wire,
An object of the present invention is to provide an enameled wire slipperiness evaluation apparatus and an evaluation method in which the correlations among the actual high-speed mechanical winding property and the convergence of the deflection coil are exactly the same.

[0024]

The gist of the present invention is that the friction rod rotation angle adjusting mechanism allows the friction body to frictionally contact the test enameled wire at a predetermined angle. And a method for evaluating the slidability of an enamel wire.

That is, the present invention relates to. A sending machine that can send the test enameled wire, a plurality of guide pulleys that can guide the test enameled wire sent from the sending machine, and a test enameled wire that is sent through the plurality of guide pulleys through a bobbin. It was installed on a winder that can be wound up, a friction body that can apply frictional resistance to the test enamel wire in the middle of a plurality of guide pulleys, and a guide pulley that is located between the friction body and the feeder. In an enameled wire slipperiness evaluation device consisting of a load cell and a load cell installed on a guide pulley located between the friction body and the winder, the friction body can be changed in angle by a friction rod rotation angle adjusting mechanism. A device for evaluating the slidability of an enamel wire, which is characterized in that it can be used.

.. The test enameled wire was sent out from the sending bobbin mounted on the sending machine under a constant tension, and the sent test enameled wire was mounted on the rotary shaft of the winder via the plurality of guide pulleys and friction bodies. While measuring the tension applied to the test enameled wire while winding it on the test piece, and after that, evaluate the slipperiness of the enameled wire from the change in the tension value. It is a method for evaluating the slidability of an enamel wire, which is characterized in that they are brought into contact with each other.

[0027]

In the device for evaluating slidability of an enameled wire according to the present invention, the friction rod rotation angle adjusting mechanism allows the friction body to frictionally contact the test enameled wire at a predetermined angle. By matching the guide angle of the machine, the winding angle of the mold, and the like, it is possible to perform a long-term, quick, and accurate evaluation test of slipperiness and winding property.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an enameled wire slipperiness evaluation apparatus and an evaluation method therefor according to the present invention will now be described with reference to the drawings.

FIG. 1 is a front explanatory view showing an embodiment of an enameled wire slipperiness evaluation apparatus and an evaluation method therefor according to the present invention.

In FIG. 1, 7 is a feeder, 8 is a guide pulley, 9 is a load cell, 10 is a friction body, 11 is a friction rod rotation angle adjusting mechanism, 12 is a winding motor, 13 is a winding bobbin, and 14 is a feeding. Bobbin.

That is, in one embodiment of the device for evaluating slipperiness of an enamel wire and the method for evaluating the same according to the present invention, the test enameled wire 6 is sent out from the sending bobbin 14 mounted on the sending machine 7 under a constant tension, and the guide pulley 8 is used. , 8, 8, 8, 8, 8,
The winding bobbin 13 mounted on the rotary shaft of the winding machine is wound via the 8, 8, 8, and 8 and the friction body 10.

The test enameled wire 6 is loaded with frictional resistance by the friction body 10, and the tension is measured by the guide pulleys 8 and 8 and the load cells 9 and 9 which are installed in front of and behind the frictional body 10. It is designed to evaluate the slipperiness of the test enamel wire and its quality.

The friction body 10 can be arbitrarily changed in angle as shown in FIGS. 2, 3 and 4 by the friction rod rotation angle adjusting mechanism 11, whereby the self-bonding enameled wire or the like to be tested can be arbitrarily changed. Friction resistance can also be provided at an angle, for example in the vertical direction.

The load cell 9 on the side of the sending machine 7 is adapted to be fed back to the sending machine 7 so that the test enameled wire 6 can be sent out with a constant tension set in advance.

Further, the outer diameter of the guide pulley 8, the delivery torque of the delivery device 7, the winding torque of the winder motor 11, the load cell, the frictional resistance of the friction body 10, etc. are appropriately changed depending on the size of the test enameled wire 6 and the like. It is supposed to do.

Next, the conductor diameter was measured by an embodiment of the device for evaluating the slidability of the enamel wire of the present invention shown in FIG. The slidability of a self-fusing polyurethane enameled wire having a diameter of 0.32 mm and a thickness of one type defined by JIS C 3003 was evaluated. Further, the same self-bonding polyurethane enameled wire was evaluated for slipperiness by the conventional inclined static friction coefficient test device shown in FIG. Table 1 shows the test results.

[0037]

[Table 1]

As can be seen from Table 1, the slidability by the conventional inclined static friction coefficient tester cannot be evaluated long because the slidability evaluation length is short, the measurement speed is slow, and the selectivity of the friction body is low. Is narrow, and high-precision determination of slipperiness is impossible, and the correlation with the actual high-speed mechanical winding property is small.

On the other hand, the slenderness evaluation apparatus and method of the enamel wire of the present invention enables long-term evaluation of slidability,
In addition, the measurement speed is fast, the selectivity of the friction body is wide, and the slipperiness can be determined with high accuracy, and the correlation with the actual high-speed mechanical winding property when the deflection coil is wound is large.

Further, in the conventional slipperiness evaluation tester, it was difficult to judge whether the coil winding property was good or bad only by slightly changing the amount of lubricating oil applied or changing the type of lubricating oil. The slenderness evaluating device for an enameled wire and the evaluating method thereof according to the present invention can accurately evaluate even such a minute difference. In particular, the device for evaluating the slidability of the enameled wire and the method for evaluating the same according to the present invention were suitable for determining the winding property of the deflection coil.

[0041]

EFFECT OF THE INVENTION According to the enamel wire slipperiness evaluation apparatus and evaluation method of the present invention, long-term evaluation of slipperiness is possible, measurement speed is fast, and slipperiness can be highly accurately determined.
As a result, a slight change in the amount of lubricating oil applied to the surface of the enamel wire or a high-speed mechanical winding property when the type of lubricating oil is changed can be evaluated quickly and accurately, and is industrially useful.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing an example of an enameled wire slipperiness evaluation apparatus and an evaluation method therefor according to the present invention.

FIG. 2 is an enlarged side view of the friction body and the friction rod rotation angle adjusting mechanism shown in FIG.

FIG. 3 is an explanatory side view showing a state in which the friction body shown in FIG. 2 has its angle changed upward by a friction rod rotation angle adjusting mechanism.

FIG. 4 is an explanatory side view showing a state in which the friction body shown in FIG. 2 has its angle changed downward by a friction rod rotation angle adjusting mechanism.

FIG. 5 is an explanatory front view showing a conventional inclined static friction coefficient testing device.

6 is an explanatory plan view showing a state in which an enameled wire is set on a moving side enameled wire setting jig of the conventional inclined static friction coefficient testing device of FIG.

7 is an explanatory plan view showing a state in which an enameled wire is set on a fixed side enameled wire setting jig of the conventional inclined static friction coefficient testing device of FIG.

[Explanation of symbols]

 1 load cell 2 constant speed moving table 3 moving side enamel wire setting jig 4 load 5 fixed side enamel wire setting jig 6 enamel wire 7 feeding machine 8 guide pulley 9 load cell 10 friction body 11 friction rod rotation angle adjusting mechanism 12 winder Motor 13 Winding bobbin 14 Delivery bobbin

Claims (3)

[Claims] 1. A feeder capable of feeding a test enamel wire, a plurality of guide pulleys capable of guiding the test enamel wire fed from the feeder, and the test enamel fed through the plurality of guide pulleys. A winding machine capable of winding a wire through a winding bobbin, a friction body capable of applying frictional resistance to the test enamel wire in the middle of the plurality of guide pulleys, and the friction body and the delivery machine. In the enamel wire slipperiness evaluation device comprising a load cell installed in the guide pulley located in the middle and a load cell installed in the guide pulley located in the middle of the friction body and the winder, the friction body Is an enamelled wire slipperiness evaluation device characterized in that the angle can be changed to a predetermined angle by a friction rod rotation angle adjusting mechanism. 2. The enameled wire slipperiness evaluation apparatus according to claim 1, wherein the friction body is made of the same material as that of the die of the winding machine. 3. A test enameled wire is sent out from a sending bobbin mounted on a sending machine under a constant tension, and the sent test enameled wire is mounted on a rotary shaft of a winder via a plurality of guide pulleys and friction bodies. Measure the tension applied to the test enamel wire while winding on the wound bobbin, and then evaluate the slipperiness of the enamel wire from the change in the tension value. A method for evaluating slidability of an enameled wire, wherein the test enameled wire is frictionally contacted at a predetermined angle.