JPH06275150A - Method and device for installing mark tube for electric wire - Google Patents

Abstract

PURPOSE:To completely automate an operation for installing a mark tube by insertion of a wire into the mark tube by preventing the wire from being hooked. CONSTITUTION:A wire 11 is tapered. The narrowest portion of the wire 11 is positioned on the axis of a mark tube 14 and opposed to the mark tube 14. The wire 11 and the mark tube 14 are positioned on the same axis and the wire 11 is passed through the mark tube 14. Curving of the wire is allowed only between the tapered end of the wire 11 and the inner peripheral surface of the mark tube 14 and complete automation can be achieved without the possibility of the wire being hooked during installation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire mark tube for displaying electric wire names and connection destination names on electric wires used when manufacturing electromechanical devices, electric control boards and the like. A method and mounting device.

[0002]

2. Description of the Related Art Conventionally, for example, a mark tube is attached to an end of an electric wire connected to a device such as an electric control panel so as to indicate a name of the electric wire and a connection destination. This mark tube is formed in a cylindrical shape, and was attached to an electric wire by an automatic machine (mark tube attaching device for electric wires) when fixing the terminal to the end of the electric wire. This conventional wire mark tube mounting device will be described with reference to FIG.

FIG. 5 is a sectional view of a conventional mark tube mounting device disclosed in, for example, Japanese Patent Laid-Open No. 62-131422. In the figure, 1 is an electric wire and 2 is a core wire of the electric wire 1. 3 is configured to grip the electric wire 1 and move the electric wire 1 along the axial direction (the direction of the arrow in the drawing). Four
Is a mark tube for electric wire which is attached to the end of the electric wire 1, and the mark tube 4 is formed in a cylindrical shape,
It is held by the mark tube clamper 5. The mark tube clamper 5 has a structure in which a pair of clamper main bodies come into contact with and separate from the mark tube 4 in the radial direction to grip the mark tube 4.

Reference numeral 6 denotes an electric wire insertion guide which serves as a guide when the electric wire 1 is inserted into the mark tube 4. The wire insertion guide 6 has an opening that gradually narrows toward the back, and a wire insertion hole is formed at the innermost part. The hole system of the wire insertion hole is set smaller than the inner diameter of the mark tube 4. The wire insertion guide 6 is attached to the wire insertion port of the mark tube clamper 5. Reference numeral 7 is a crimping terminal that is crimped onto the tip of the electric wire 1, and 8 is a terminal crimping mechanism that is arranged on the opposite side of the mark tube clamper 5 from the electric wire insertion port and crimps the crimping terminal 7 to the electric wire 1.

In order to mount the mark tube 4 on the electric wire 1 using the conventional mark tube mounting device having such a structure, first, the mark tube 4 is mounted on the mark tube clamper 5 to which the electric wire insertion guide 6 is mounted. Hold and prepare for wire insertion. And the axis is the mark tube 4.
The electric wire 1 is held by the electric wire clamper 3 so as to be the same as the electric wire clamper 3, and the electric wire clamper 3 is moved along the axis to insert the electric wire 1 into the opening of the electric wire insertion guide 6.

By continuing to move the electric wire clamper 3, the electric wire 1 is passed through the mark tube 4 from the electric wire insertion hole of the electric wire insertion guide 6, and the core wire 2 is crimped to the terminal crimping mechanism 8.
It is arranged on the crimp terminal 7. Then, the terminal crimping mechanism 8 crimps the crimp terminal 7 to the end of the electric wire.

After the crimping is completed in this manner, the mark tube clamper 5 is unclamped (released), and the electric wire clamper 3 is moved in the opposite direction to the above, so that the mark tube 4 is securely attached to the terminal crimping portion. It will be fixed.

[0008]

However, in the conventional mark tube mounting device having such a structure, the electric wire 1
However, there is a problem in that it stops inside the wire insertion guide 6 without being inserted into the mark tube 4. This is because the inner diameter of the mark tube 4 is only slightly larger than the outer diameter of the electric wire 1, and the electric wire insertion hole of the electric wire insertion guide 6 is narrower than the inner diameter of the mark tube 4.

That is, when the gap between the electric wire 1 and the inner wall surface of the electric wire insertion guide 6 is extremely narrow and the tip of the electric wire 1 is slightly bent, the tip is caught by the opening edge of the electric wire insertion hole. It cannot be sent further into the interior. To solve such a problem, the inner diameters of the mark tube 4 and the wire insertion hole may be increased. However, if done so, the mark tube 4 cannot be fixed to the electric wire 1.

Further, the insertion work was carried out with the core wire 2 protruding from the insulating film in order to crimp the crimp terminal 7 to the end portion of the electric wire 1, but the core wire 2 was inserted into the wire insertion guide 6 and the mark tube 4. The electric wire 1 may be prevented from being inserted due to being caught. In such a case, the core wire 2 is bent or disengaged.

That is, the conventional mark tube mounting apparatus has not been a completely automated mark tube mounting operation.

The present invention has been made to solve such a problem, and an object thereof is to eliminate the catching of the electric wire and to completely automate the work of attaching the mark tube for inserting the electric wire into the mark tube.

[0013]

According to the method of mounting a mark tube for an electric wire of the present invention, the tip portion of the electric wire is formed in a tapered shape, and the electric wire is made to face the opening portion of the mark tube so that the tapered portion is the thinnest. With the part positioned on the axis of the mark tube, the tip of the wire faces the opening of the mark tube, and then the wire is pierced through the mark tube with the wire and the mark tube positioned on the same axis. is there.

The electric wire mark tube mounting apparatus according to the present invention includes a tube clamper for holding the electric wire mark tube, an electric wire clamper for holding the electric wire at a position facing the opening of the mark tube, and an end portion of the electric wire. By changing the relative position between the tip processing device that forms a taper and the wire and the mark tube, when inserting the wire into the mark tube, position the thinnest part of the taper part of the wire on the axis of the mark tube and mark the wire An electric wire insertion device that penetrates the mark tube while being positioned on the same axis as the tube.

[0015]

In the electric wire, the thinnest portion of the electric wire tip first faces the opening of the mark tube, and penetrates the mark tube with its axis aligned with the mark tube.

[0016]

【Example】

Example 1. An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view showing a schematic configuration of a mark tube mounting apparatus according to the present invention, FIG. 2 is a perspective view for explaining a mark tube mounting method according to the present invention, and FIG. Figure (b)
Shows the electric wire after the tip processing, (c) shows the electric wire facing the mark tube, (d) shows the electric wire tip facing the opening of the mark tube,
The figure (e) shows the state where the electric wire is penetrated through the mark tube and the tip treatment is applied, and the figure (f) shows the state where the crimp terminal is crimped to the electric wire.

In these figures, 11 is an electric wire, and this electric wire 11 has a conventionally well-known structure in which a core wire 11a is covered with an insulating film. Reference numeral 12 is an inclined surface formed at the tip of the electric wire 11. The inclined surface 12 is formed by diagonally cutting the tip of the electric wire 11 with a cutter (not shown). That is, the tip of the electric wire 11 is formed in a taper shape in which the width of the electric wire is gradually narrowed toward the tip. A conventionally known cutter can be used as the cutter (corresponding to the tip processing device according to the present invention) used when forming the inclined surface 12 on the electric wire 11.

Reference numeral 13 is an electric wire clamper for holding the electric wire 11. The electric wire clamper 13 is provided with a pair of clamper main bodies that come in contact with and separate from each other along the radial direction of the electric wire 11, and the electric wire 11 is sandwiched between these clamper main bodies. It is structured. The electric wire clamper is connected to a moving device (not shown) so that it can move in the left-right direction and the up-down direction in FIG. The moving device constitutes the wire insertion device according to the present invention.

Reference numeral 14 is a mark tube for electric wire, and the mark tube 14 is the same as the conventional one.
It is held by the mark tube clamper 15. Similarly to the electric wire clamper 13, the mark tube clamper 15 also has a structure in which a pair of clamper main bodies are brought into contact with and separated from each other to grip the mark tube 14. Then, it is connected to the moving device and is movable in the left-right direction and the up-down direction in FIG. In the present embodiment, the mark tube 1 held by the mark tube clamper 15 is
An example of directly inserting the electric wire 11 into the 4 will be described.
An electric wire insertion guide can be attached to the mark tube clamper 15 as in a conventional device. When the wire insertion guide is attached, the diameter of the wire insertion hole is set to be slightly smaller than the outer diameter of the mark tube 14.

Next, the mark tube mounting method according to the present invention will be described using the mark tube mounting apparatus configured as described above. First, the mark tube clamper 15 is caused to grip the mark tube 14, and the mark tube clamper 15 is fixed at a predetermined wire insertion position. Along with this tube arrangement operation, the electric wire 11 is gripped by the electric wire clamper 13 and is opposed to the opening of the mark tube 14 so that the axis is parallel to the axis of the mark tube 14. At the tip of the electric wire 11, an inclined surface 12 is formed by cutting it obliquely in advance from the state shown in FIG. 2A with a cutter as shown in FIG.

Further, when the electric wire 11 is gripped by the electric wire clamper 13, the electric wire clamper 13 is made to project toward the tip side from the electric wire clamper 13 by a length sufficient to penetrate the mark tube 14 and the mark tube clamper 15, and at the most end of the electric wire tip portion. In this embodiment, the narrowed portion is positioned on the upper side. The inclined surface 12 connects the electric wire 11 to the electric wire clamper 1.
It can also be formed by cutting while being held by 3.

Then, the electric wire clamper 1 is moved by the moving device.
3 is vertically displaced in FIG. 1, and the same figure and FIG.
As shown in (c), the portion of the tip of the electric wire 11 where the width is narrowest is positioned on the axis of the mark tube 14. That is, the axis C1 of the electric wire 11 and the axis C2 of the mark tube 14 are displaced by an amount corresponding to a substantially radius of the electric wire 11. The mark tube clamper 15 can be moved up and down without moving the wire clamper 13, or both can be moved.

The electric wire clamper 13 is connected to the arrow A in FIG.
2 (the direction in which the distance between the two becomes narrower along the axes C1 and C2), and the electric wire 1 is moved as shown in FIG. 2 (d).
The tip of No. 1 faces the opening of the mark tube 14. In addition, this wire insertion operation is performed by the mark tube clamper 15
Can be moved in the direction opposite to the arrow A direction, or both the electric wire clamper 13 and the mark tube clamper 15 can be brought close to each other. At this time, the electric wire 11
Since the tip of the wire is cut diagonally and becomes gradually thinner toward the tip, the gap between the tip and the inner peripheral surface of the mark tube 14 is large. It is securely inserted into the mark tube 14. Moreover, even if the tip of the electric wire comes into contact with the opening edge of the mark tube 14,
Since the core wire 11a does not protrude from the insulating coating, it is not damaged.

After inserting the tip of the electric wire 11 into the mark tube 14 as described above, the mark tube clamper 15 is moved downward by the moving device as shown by an arrow B in FIG. The axis C2 of the tube 14 is matched. This axis line matching operation can be performed by raising the electric wire clamper 13 or moving both the electric wire clamper 13 and the mark tube clamper 15 in a direction in which the axis lines match.

Next, the electric wire clamper 13 and the mark tube clamper 15 are brought relatively close to each other to penetrate the electric wire 11 into the mark tube 14, and the mark tube 14 is positioned at a predetermined position of the electric wire 11. Mark tube 1 like this
After inserting the wire 11 into the wire 4, in order to crimp the crimp terminal 16 to the tip of the wire 11, the insulating coating is removed by a conventionally known wire stripper (not shown) or the like as shown in FIG. 2 (e). The core wire 11a is exposed. At this time, since the diagonal portion of the insertion end of the electric wire 11 is divided and removed, there is no inconvenience in terminal mounting. Then, Figure 2
As shown in (f), the crimp terminal 16 is crimped to the tip of the electric wire 11, and the electric wire 11 and the mark tube 14 are taken out from the electric wire clamper 13 and the mark tube clamper 15, whereby the mark tube mounting operation is completed.

Therefore, the thinnest part of the tip of the electric wire 11 first faces the opening of the mark tube 14, and penetrates the mark tube 14 with its axis aligned with the mark tube 14. Therefore, the wire 1 is separated by the distance between the thin tip of the wire 11 and the inner peripheral surface of the mark tube 14.
A bend of 1 can be tolerated.

Example 2. In the above-described embodiment, an example in which the tip end of the electric wire is cut obliquely to form the inclined surface is shown, but the tip may be formed in a truncated cone shape as shown in FIGS. 3 and 4. FIG. 3 is a cross-sectional view showing another embodiment in which the tip of the electric wire is formed into a truncated cone shape, and FIG. 4 is a perspective view showing a procedure for mounting the mark tube when the tip of the electric wire is formed into a truncated cone shape. In these figures, the same or equivalent members as those described in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIGS. 3 and 4, reference numeral 21 is an inclined surface formed at the tip of the electric wire 11. This inclined surface 21
By scraping the insulating coating on the tip of the electric wire 11 shown in FIG. 4 (a) over the entire circumference with a cutter (not shown), and making the tip of the electric wire into a truncated cone shape as shown in FIG. 4 (b). Has been formed. In this case, the thinnest part of the electric wire 11 is located on the axis of the electric wire 11.

In order to attach the mark tube 14 to the electric wire 11 whose tip portion is formed in a truncated cone shape in this manner, the electric wire 11 held by the electric wire clamper 13 is used as shown in FIGS.
As shown in (c), the mark tube 14 is positioned on the same axis. That is, with the axes of the electric wire 11 and the mark tube 14 aligned with each other, the arrow A in FIG.
As shown by the arrow in (c), the electric wire 11 and the mark tube 14 are brought relatively close to each other, and the thinnest part of the electric wire 11 is exposed to the mark tube 14.

In this way, the thinnest portion of the tip of the electric wire 11 is inserted into the center of the mark tube 14, so that even if the electric wire 11 is bent a little, the tip is surely inserted into the mark tube 14. To be done. Then, after passing the electric wire 11 through the mark tube 14, as shown in FIG.
As shown in (d), the insulation coating on the tip of the wire is removed to expose the core wire 11a, and as shown in (e) of the figure, the crimp terminal 1
6 is crimped. In this way, the work of mounting the mark tube 14 is completed.

Therefore, even if the tip of the electric wire 11 is formed in a truncated cone shape, the thinnest part of the electric wire 11 faces the opening of the mark tube 14 first, and the mark tube 14 is the same as in the above-described embodiment. Will pass through the mark tube 14 in a state where the axis line and the axis line match. Therefore, the electric wire 1
The bending of the electric wire 11 can be allowed only by the distance between the thin tip of No. 1 and the inner peripheral surface of the mark tube 14.

In each of the above-mentioned embodiments, the electric wire clamper 13 and the mark tube clamper 15 are moved by the moving device. However, one of the electric wire clamper 13 and the mark tube clamper 15 cannot be changed in position. , And the other can be moved.

[0033]

As described above, in the method of mounting the mark tube for electric wire according to the present invention, the tip portion of the electric wire is formed in a tapered shape, and the electric wire is made to face the opening of the mark tube so that With the thin portion positioned on the axis of the mark tube, the tip of the wire faces the opening of the mark tube, and then the wire is passed through the mark tube with the wire and the mark tube positioned on the same axis. That is, the electric wire mark tube mounting device according to the present invention includes a tube clamper for holding the electric wire mark tube, an electric wire clamper for holding the electric wire at a position facing the opening of the mark tube, and a distal end portion of the electric wire. When changing the relative position of the electric wire and the mark tube to the tip processing device that forms a taper shape, and when inserting the electric wire into the mark tube, Since the thinnest part of the part is positioned on the axis of the mark tube and the wire is inserted into the mark tube while the wire is positioned on the same axis as the mark tube, the wire is installed at the tip of the wire. The thinnest part first faces the opening of the mark tube, and penetrates the mark tube with its axis aligned with the mark tube.

Therefore, since it is possible to allow the bending of the electric wire by the distance between the thin tip of the electric wire and the inner peripheral surface of the mark tube, it is possible to prevent the electric wire from being caught during the insertion of the electric wire into the mark tube. For this reason,
It is possible to completely automate the work of attaching the mark tube to insert the electric wire into the mark tube.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a schematic configuration of a mark tube mounting device according to the present invention.

2A and 2B are perspective views for explaining the method of mounting the mark tube according to the present invention, in which FIG. 2A shows an electric wire before the tip processing, FIG. 2B shows an electric wire after the tip processing, Figure (c)
Shows the electric wire facing the mark tube, (d) shows the electric wire tip facing the opening of the mark tube, and (e) shows the electric wire passing through the mark tube. The state where the tip treatment is performed is shown, and FIG. 6F shows the state where the crimp terminal is crimped to the electric wire.

FIG. 3 is a cross-sectional view showing another embodiment in which the tip of the electric wire is formed into a truncated cone shape.

FIG. 4 is a perspective view showing a procedure for attaching a mark tube when the tip of the electric wire is formed into a truncated cone shape.

FIG. 5 is a cross-sectional view of a conventional mark tube mounting device.

[Explanation of symbols]

 11 electric wire 12 inclined surface 13 electric wire clamper 14 mark tube 15 mark tube clamper 21 inclined surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takataka Mizuguchi 8 Horai ▲ Lai ▼ Town, Marugame City, Kagawa Prefecture Mitsubishi Electric Corporation Marugame Factory

Claims (2)

[Claims] 1. An end face of an electric wire is formed in a tapered shape by forming an inclined surface in which the width of the electric wire is gradually narrowed toward the end, and the electric wire has an axis parallel to the mark tube for electric wire. Face the opening of the mark tube so that the thinnest part of the tapered portion is positioned on the axis of the mark tube, and let the tip of the wire face the opening of the mark tube. A method of mounting a mark tube for electric wire, wherein the electric wire is penetrated through the mark tube in a state where the tube and the tube are positioned on the same axis. 2. A tube clamper for holding an electric wire mark tube, an electric wire clamper for holding an electric wire parallel to the mark tube at a position facing the opening of the mark tube, and a tip end portion of the electric wire formed in a tapered shape. Change the relative position between the tip processing device and the electric wire and the mark tube along the axial and radial directions of the electric wire so that when inserting the electric wire into the mark tube, place the thinnest part of the taper part of the electric wire on the axis of the mark tube. An apparatus for mounting a mark tube for electric wire, comprising: an electric wire insertion device that positions the electric wire and penetrates the mark tube in a state where the electric wire is positioned on the same axis as the mark tube.