JPS63282060A - Detecting method for residual quantity of cable wound round bobbin - Google Patents

Abstract

PURPOSE:To properly detect that cable residue wound round a bobbin has become small by mounting a transparent window plate to a wind opening in a hood put on a bobbin and pouring irradiation light by inclining aslant from vertical to this window plate. CONSTITUTION:Irradiation light 4 is poured aslant from vertical at an angle of theta from the light source of a photo sensor provided at the side window opening 12 of the hood 11 into a hood 11 through a transparent plate 15 in the window opening 12. This irradiation light 4 hits on some part of surface processing means 3 of a bobbin 3 which is wound with cable 2 inside this hood 11 and its reflected light is received with a photo receiver of this photo sensor 13. Next, when the residual quantity of the cable 2 wound round the bobbin 10 becomes small, the reflection amount from the surface processing means 3, which is applied on the bobbin drum 1 exposed from under the cable 2, increases (or decreases) and by the significant difference of this reflection amount, it detects that residual quantity of the cable 2 has become small. Further, the poured light can be reached to the surface of the bobbin 10 by pouring the irradiation light 4 at an angle of theta like this.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for detecting the remaining amount of wire wound around a hooded bobbin (reel).

(Prior art) In electric windings such as magnet coils and motors,
For example, it is manufactured by winding electric wire around an iron core.

At this time, the wire is drawn out from the supply bobbin and wound continuously around the iron core. Alternatively, the wire twisting machine or twisting machine draws out the wires from a supply bobbin around which the wires are wound, and then twists the wires together, and winds the twisted wires onto a take-up bobbin.

In such a case, when the wire wound around the supply bobbin runs out, it is replaced with the next bobbin to replenish the supply of wire. The end of the seven electric wires is rolled up, causing a loss of time to replenish the electric wires, and the connection with the next electric wire is not possible, resulting in trouble, significantly reducing work efficiency, or resulting in defective products.

For this reason, various methods have been considered to detect the remaining amount of wire, and one of them has been proposed the following method that can be used when covering with a hood (Japanese Patent Application Laid-Open No. 60-218
(See No. 266).

In other words, when a bobbin with wires wound thereon is covered with a hood and the wires are pulled out for use, the bobbin has a hood attached to the winding drum at a predetermined height and a part of the circumference of the winding drum or a hood around the winding drum. In order to increase the difference in surface reflectance between the electric wire and the bobbin winding body, tape, foil, etc. are pasted or coated with paint, etc., and a window hole is placed in a designated place in the hood. Using the equipment provided, irradiation light is irradiated through the window hole of the hood to the above-mentioned pasting tape, foil, etc. or applied paint part of the bobbin winding drum, and the reflected light is reflected from the surface of the wire and the bobbin winding drum. This is a method of determining the remaining amount of wire wound on the bobbin based on the significant difference in the ratio.

(Problems to be Solved by the Invention) In the above case, since the hood is made with a hole, dirt, dust, etc. can easily enter the inside, which may adversely affect the quality of the electric wires wound inside.

Therefore, in order to prevent this dirt and dust from entering, the hood can be sealed by pasting a transparent plate over the window hole in the hood.

However, if detection is performed using irradiated light from outside the hood in this state, there are the following problems.

That is, since the inside of a window (transparent plate) attached to a closed hood is dark, if the irradiated light is irradiated perpendicularly to the window plate due to the mirror effect, the irradiated light will be reflected on the surface of the window and will not reach the reel inside, making it impossible to detect.

In view of the above, the present invention was developed to solve these problems.

(Measures for solving the problem) When the wire is drawn out and used by covering the bobbin, the bobbin has a part of the circumference of the winding drum at a predetermined height with a width around the winding drum, or a part of the circumference of the winding drum. The hood is coated with a surface treatment that increases the difference in surface reflectance between the wire and the bobbin winding body, and the hood is provided with window holes at designated locations. The irradiation light is directed to the surface treatment means part of the winding drum of the bobbin through the hole, and when the reflected light is received, the remaining amount of the wire wound on the bobbin is determined by the significant difference in surface reflectance between the wire and the winding drum of the bobbin. In the method of knowing, a transparent window plate is attached to the window hole provided in the hood, and the irradiated light is incident on the transparent window plate attached to the window hole at an angle from perpendicular to diagonal. This is a characteristic feature.

The invention will be explained in more detail below with reference to FIG. 1 of an exemplary embodiment. In Figure 1, (10) is a bobbin (reel),
(1) is a bobbin winding drum, (3) Iri bobbin boxwood, ('5
) is a foil such as white adhesive tape, black adhesive tape, etc.
Fig. 1 shows a surface treatment means for increasing the difference in surface reflectance between an electric wire such as an adhesive piece such as a tape or a coating paint such as white or black and the bobbin winding drum.
3) It is provided around the winding drum of the Fi bobbin (the above-mentioned surface treatment means (3) may be applied to a part of the circumference of the winding drum of the ki bobbin).

Next, as shown in FIG. 1, the hood has a window hole (12) on the side of the hood (11). This hood window hole (1
2) is especially equipped with a transparent plate (15) in the present invention. The transparent panel of this window hole is free from dust and dirt!
This is to prevent entry. The wire outlet (13) at the top of the hood is covered with a lid (17) to prevent dust from entering.
However, this is only for storage and transportation, and the lid must be removed when using.

In such a hooded bobbin, the remaining amount of wire wound around the bobbin can be detected using an optical sensor equipped with an irradiation light source and a reflected light receiver in the side window hole (12) of the hood (11). (13) is provided, and the irradiation light (4) is directed through this window hole toward the part of the bobbin on which the electric wire (2) is wound inside the hood, where the surface treatment means (3) is located, and the reflected light is receive.

In particular, in the present invention, the irradiation light (4) is made to enter the window plate at an angle (θ) diagonally from the perpendicular to the window plate as shown in FIG.

In such cases, when the amount of wire wound on the bobbin decreases, the amount of light reflected from the surface treatment means applied to the bobbin winding drum exposed from below the wire increases or decreases.Due to the significant difference in the amount of reflected light, the wire You can know when the remaining amount is low.

At the same time, the problem of the irradiated light being reflected on the surface of the window plate can be solved by setting the irradiated light at an angle so that it enters the window diagonally as shown in the figure. Note that by changing this angle (depending on the height of the position of the sensing portion of the bobbin from a certain reference point), it is also possible to adjust the predetermined remaining amount.

The width of the detection colored tape or paint is set depending on the desired remaining amount.

(Function) By installing the optical sensor at an angle as shown in Figure 1, the incident light reaches the surface of the bobbin, so the reflected light from the electric wire and the colored detection tape or paint wrapped around the bobbin can be combined. It becomes possible to detect the difference in reflected light.

(Example) To describe an example of the present invention, it has already been implemented on a large reel, and it was immediately usable for detecting the remaining amount.

(Effects of the Invention) As described above, according to the method for detecting the remaining amount of electric wire wound on a bobbin with a hood according to the present invention, the detection device has a simple structure and can be easily attached to the hood.
Since it is completely non-contact and can be detected from outside the sealed hood, it is possible to detect the remaining amount of wire without adversely affecting the product.

[Brief explanation of the drawing]

FIG. 1 illustrates a detailed explanatory diagram of the invention. (1)...Bobbin winding drum, (2)...Electric wire, (3)...
... surface treatment means, (4) ... irradiation light, (5) ...
Reflected light, (3)...bobbin boxwood, (10)...
Bobbin, (11)...Hood, (12)...Window hole, (13)...Irradiation light source, (14)...Reflected light receiver, (15)...Transparent plate, (13)... )...Wire outlet, (17)...Lid Figure 1

Claims (5)

[Claims] (1) When using a bobbin with wire wound thereon by covering the bobbin with a hood and pulling out the wire, the bobbin has a hood attached to a portion of the circumference of the winding drum at a predetermined height with a width around the winding drum. The hood is coated with a surface treatment that increases the difference in surface reflectance between the wire and the bobbin winding body, and the hood is provided with window holes at designated locations. Irradiation light is directed toward the surface treatment means part of the bobbin winding drum through a window hole, and upon receiving the reflected light, the remaining amount of wire wound on the bobbin is determined by the significant difference in surface reflectance between the wire and the bobbin winding drum. In the method of knowing, a transparent window plate is attached to the window hole provided in the hood, and the irradiated light is incident on the transparent window plate attached to the window hole at an angle from perpendicular to diagonal. A method for detecting the remaining amount of wire wound on a bobbin, characterized by: (2) The method for detecting the remaining amount of electric wire wound around a bobbin according to claim (1), wherein the surface treatment means for increasing the difference in surface reflectance is a pasting piece such as tape or foil. (3) The method for detecting the remaining amount of electric wire wound around a bobbin according to claim (1), wherein the surface treatment means for increasing the difference in surface reflectance is a paint. (4) The method for detecting the remaining amount of electric wire wound around a bobbin according to claim (2) or (3), wherein the adhesive piece such as tape or foil and the paint are black in color. (5) A method for detecting the remaining amount of electric wire wound on a bobbin according to claim (1), wherein the remaining amount is adjusted by adjusting the incident angle of light irradiated from a window provided in the hood.