JP2022001004A - Attachment method of electric wire protecting tube, and feeding device of electric wire protecting tube - Google Patents

Abstract

To make it possible to easily attach a heat-shrinkable tube to an outer periphery of an electric wire in a short period of time by one hand.SOLUTION: There are provided: a tube holding stand 2 provided as a lower end area of an inclined chute 10 on which a heat-shrinkable tube 1 drops and slides; and a stopper 20 for preventing the heat-shrinkable tube 1 from falling off at a lower end of the tube holding stand 2. The stopper 20 is provided with an electric wire insertion hole 21 for inserting an electric wire W whose tip passes through the heat-shrinkable tube 1, and a slit 22 for upwardly taking out the electric wire W. The tube holding stand 2 is provided with an upper face opening 11 capable of taking up the heat-shrinkable tube 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method of mounting an electric wire protection tube cut to a predetermined length on the outer circumference of an electric wire, and an electric wire protection tube supply device used for carrying out the method.

Insulation-coated wires are often covered with a heat-shrinkable tube or other wire protection tube to insulate and protect the intermediate connection, intermediate water stop, or exposed conductor of the terminal.

In attaching these electric wire protection tubes to the outer circumference of the electric wire, conventionally, the operator holds the tube in one hand and the electric wire in the other hand, and inserts the electric wire into the tube with both hands. Patent Document 1 describes an example of holding a tube while expanding its diameter using a jig, but in any case, it was a work using both hands.

Japanese Unexamined Patent Publication No. 2000-141488

As described above, conventionally, since it was necessary to attach the electric wire protection tube to the outer periphery of the electric wire with both hands, the workability was poor and it took time.

The present invention has been made in view of the above circumstances, and an object thereof is a method of attaching an electric wire protection tube that can easily attach an electric wire protection tube to the outer periphery of an electric wire in a short time with one hand, and a method for attaching the electric wire protection tube. To provide a wire protection tube feeder used in the implementation of the method.

In order to achieve the above-mentioned object, the method for mounting the electric wire protection tube and the electric wire protection tube supply device according to the present invention are characterized by the following (1) to (5).
(1) Attaching the electric wire protection tube to the outer circumference of the electric wire In the method of attaching the electric wire protection tube,
The process of setting the wire protection tube on the tube holding base that holds the tube in an inclined posture, and
A step of inserting the tip of an electric wire into an electric wire insertion hole of a stopper for preventing the tube from falling off arranged at the lower end of the tube holding table, and passing the tip of the electric wire through the internal space of the electric wire protection tube held by the tube holding table. When,
By taking out the electric wire inserted into the electric wire insertion hole upward from the slit provided in the stopper, the electric wire protection tube through which the tip of the electric wire is passed is taken up from the upper surface opening of the tube holding table. ,
Equipped with
How to attach the electric wire protection tube.

(2) The electric wire protection tube is a heat-shrinkable tube for covering and protecting a protected portion located at an arbitrary position in the length direction of the electric wire.
The method for mounting the electric wire protection tube according to the above (1).

(3) A tube holding base that can hold the wire protection tube in an inclined posture,
A stopper arranged at the lower end of the tube holding table to prevent the electric wire protection tube set on the tube holding table from falling off, and a stopper.
Equipped with
The stopper has an electric wire insertion hole for inserting an electric wire passing through the internal space of the electric wire protection tube held in the tube holding base, and a slit for taking out the electric wire inserted through the electric wire insertion hole upward. And are formed,
The tube holding table is provided with an upper surface opening that allows the electric wire protection tube through which the tip of the electric wire is passed to be picked up from the tube holding table when the electric wire is taken out upward from the slit of the stopper. ,
A wire protection tube supply device characterized by that.

(4) The tube holding base is provided as a lower end region of an inclined chute that slides the electric wire protection tube inserted from the upper end toward the lower end.
The electric wire protection tube supply device according to (3) above.

(5) A guide is provided on the side of the stopper opposite to the side in contact with the electric wire protection tube to guide the tip of the electric wire to the electric wire insertion hole when the tip of the electric wire is inserted into the electric wire insertion hole.
The electric wire protection tube supply device according to (4) above.

According to the method of attaching the electric wire protection tube having the configuration of (1) above, the electric wire is held with one hand, and the tip thereof is inserted into the internal space of the electric wire protection tube held by the tube holding base through the electric wire insertion hole of the stopper. A wire protection tube can be attached to the outer circumference of the wire simply by lifting the wire. Therefore, the electric wire protection tube can be easily attached to the outer periphery of the electric wire in a short time with one hand.

According to the method of attaching the electric wire protection tube having the configuration of (2) above, the heat-shrinkable tube can be easily attached to the outer periphery of the electric wire with one hand. Therefore, after mounting, the heat-shrinkable tube can be protected by the heat-shrinkable tube only by moving the heat-shrinkable tube to a position requiring protection along the electric wire and heat-treating at that position.

According to the electric wire protection tube supply device having the above configuration (3), the electric wire protection tube can be easily attached to the outer circumference of the electric wire in a short time with one hand only by providing a tube holding base and a stopper for holding the electric wire protection tube in an inclined posture. Can be attached to.

According to the electric wire protection tube supply device having the configuration of (4) above, the tip of the electric wire can be passed through the electric wire protection tube that is slide-supplied to the same position one after another on the inclined chute. Therefore, the electric wire protection tube can be efficiently attached to the outer periphery of the electric wire only by providing one inclined chute.

According to the electric wire protection tube supply device having the configuration of (5) above, when the tip of the electric wire is inserted into the electric wire insertion hole of the stopper, it can be guided by a guide. Therefore, the work can be facilitated and improved in efficiency.

According to the present invention, the electric wire protection tube can be easily attached to the outer periphery of the electric wire in a short time with one hand, so that the work efficiency can be improved.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 1 is an explanatory view of an electric wire protection tube supply device according to an embodiment of the present invention, and FIG. 1A is a side sectional view showing a state in which the tip of an electric wire is about to be inserted into the internal space of a heat-shrinkable tube. 1 (b) is a side sectional view showing a state in which the tip of the electric wire is inserted into the internal space of the heat-shrinkable tube and then the electric wire is lifted to pick up the heat-shrinkable tube. 2A and 2B are views showing a configuration of a main part of the electric wire protection tube supply device according to the embodiment of the present invention, FIG. 2A is a perspective view, and FIG. 2B is a view seen from diagonally above. 3A and 3B are explanatory views of a method of mounting the electric wire protection tube according to the embodiment of the present invention, and FIG. 3A is a diagram and a diagram showing a state in which the tip of the electric wire is inserted into the lower end of the electric wire protection tube supply device. 3 (b) shows a state in which the heat-shrinkable tube is picked up by lifting the inserted electric wire, and FIGS. 3 (c) and 3 (d) show the heat-shrinkable tube picked up by turning the lifted electric wire vertically. It is a figure which shows the state which is surely attached to the outer periphery of the root side of an electric wire. FIG. 4 is a diagram showing an example of a case where there is a protected portion to be covered with a heat-shrinkable tube in the middle portion in the length direction of the insulated coated electric wire, and FIG. 4A shows a state before mounting the heat-shrinkable tube. FIG. 4 (b) is a diagram showing a state in which a heat-shrinkable tube is attached at a predetermined position, and FIG. 4 (c) is a diagram showing a state in which the heat-shrinkable tube is heat-shrinked.

Specific embodiments of the present invention will be described below with reference to the respective figures.

In the present embodiment, as shown in FIG. 4, a protected portion (hereinafter, simply referred to as “electric wire”) to be covered with a heat-shrinkable tube 1 as a wire protecting tube is provided on the intermediate portion in the length direction of the insulated coated electric wire W (hereinafter, simply referred to as “electric wire”). A case where there is a water stop part) will be described.

FIG. 4A is a diagram showing a state before the heat-shrinkable tube 1 is attached to the electric wire W, and FIG. 4B is a diagram showing a state in which the heat-shrinkable tube 1 is attached to a predetermined position of the electric wire W. 4 (c) is a diagram showing a state in which the heat-shrinkable tube 1 is heat-shrinked.

In FIGS. 4A to 4C, the core wire is exposed in the middle of the length direction of the electric wire W, and the water blocking agent is infiltrated into the exposed core wire to heat the water blocking portion (protected portion) Wa. The case where the coating is protected by the shrink tube 1 is shown.

In this way, when the protected portion Wa is covered with the heat-shrinkable tube 1, a step of attaching the tubular heat-shrinkable tube 1 before the shrinkage treatment to the outer periphery of the electric wire W is performed prior to the heat-shrinking treatment of the heat-shrinkable tube 1. There is a need. As the device for that purpose, in the present embodiment, the electric wire protection tube supply device M shown in FIGS. 1 and 2 is used.

FIG. 1A is a side sectional view showing a state in which the tip of the electric wire W is about to be inserted into the internal space of the heat-shrinkable tube 1, and FIG. 1B is a side sectional view showing the state where the tip of the electric wire W is being inserted into the internal space of the heat-shrinkable tube 1. It is a side sectional view which shows the state which the electric wire W is lifted and the heat shrink tube 1 is picked up after being inserted into. 2A and 2B are views showing a configuration of a main part of the electric wire protection tube supply device M, FIG. 2A is a perspective view, and FIG. 2B is a view seen from diagonally above.

As shown in FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b), the electric wire protection tube supply device M of the present embodiment is a tube holding base provided as a lower end region of a long inclined chute 10. 2 and a stopper 20 arranged at the lower end of the inclined chute 10 are provided. The tube holding table 2 which is the lower end region of the inclined chute 10 is a portion capable of holding the heat-shrinkable tube 1 in a posture tilted diagonally from the vertical. The inclined chute 10 is a gutter-shaped slide on which the electric wire protection tube 1 inserted from the upper end 10a by the feeder or the like 50 is dropped and slid toward the lower end 10b, and the upper surface thereof is covered with a cover 13 as needed. Only the area corresponding to the tube holding table 2 at the lower end is open on the upper surface by omitting the cover 13. This upper surface open portion corresponds to the upper surface opening 11 that takes out the heat-shrinkable tube 1 at the lowermost end that has slid the inclined chute 10 upward, and the length of the opening is larger than the length of one heat-shrinkable tube 1. It is set slightly larger.

The stopper 20 prevents the heat-shrinkable tube 1 that has fallen and slid the long inclined chute 10 and reached the region of the tube holding table 2 from falling off from the inclined chute 10. The stopper 20 is formed with an electric wire insertion hole 21 for inserting an electric wire W passing through the tip into the internal space of the heat-shrinkable tube 1 held by the tube holding table 2. The size of the electric wire insertion hole 21 is set to be smaller than the outer diameter of the heat-shrinkable tube 1, so that the heat-shrinkable tube 1 does not fall out from the electric wire insertion hole 21. Further, the hole edge of the electric wire insertion hole 21 is provided with a chamfer or a radius for facilitating the insertion of the tip of the electric wire W.

Further, on the upper surface of the stopper 20, a slit 22 is provided for communicating the electric wire W through the electric wire insertion hole 21 and taking out the electric wire W inserted in the electric wire insertion hole 21 upward. Further, on the side of the stopper 20 opposite to the side in contact with the heat shrink tube 1, a guide table (guide) 30 that guides the tip of the electric wire W to the electric wire insertion hole 21 when the tip of the electric wire W is inserted into the electric wire insertion hole 21. Is provided.

When the heat-shrinkable tube 1 is attached to the outer periphery of the electric wire W by using the electric wire protection tube supply device M having such a configuration, the work is performed according to the procedure shown in FIG.

3A and 3B are explanatory views of a method of mounting the electric wire protection tube of the present embodiment, and FIG. 3A is a diagram showing a state in which the tip of the electric wire W is inserted into the lower end of the electric wire protection tube supply device M, FIG. 3; (B) is a diagram showing a state in which the heat-shrinkable tube 1 is picked up by lifting the inserted electric wire W, and FIGS. 3 (c) and 3 (d) show the heat picked up by turning the lifted electric wire W vertically. It is a figure which shows the state that the shrink tube 1 is surely attached to the outer periphery of the electric wire W on the root side.

When the heat-shrinkable tube 1 is attached to the outer periphery of the electric wire W, first, as shown in FIGS. 1 (a), 2 (a), and 2 (b), the tube holding base in the lower end region of the inclined chute 10 is previously attached. Set the heat shrink tube 1 in 2. That is, if the heat-shrinkable tube 1 is inserted into the upper end 10a of the inclined chute 10, the heat-shrinkable tube 1 automatically drops and slides to the lowermost position by its own weight, hits the stopper 20, and stops. The heat-shrinkable tubes 1 may be inserted into the inclined chute 10 one by one, but may be continuously inserted into the inclined chute 10 one after another so as to be vertically aligned in the inclined chute 10. ..

Next, as shown in FIGS. 1 (a), 2 (a), (b), and 3 (a), the operator holds the tip of the electric wire W with one hand and holds the tip of the electric wire W with the stopper 20. It is inserted into the electric wire insertion hole 21 of the above. Then, the tip of the electric wire W is passed to the internal space of the heat-shrinkable tube 1 held by the tube holding table 2. When the tip of the electric wire W is inserted into the electric wire insertion hole 21 of the stopper 20, the guide table 30 can guide the tip of the electric wire W, so that the work can be easily proceeded.

Next, as shown in FIGS. 1 (b) and 3 (b), the operator takes out the electric wire W inserted into the electric wire insertion hole 21 upward from the slit 22 of the stopper 20. Then, the heat-shrinkable tube 1 through which the tip of the electric wire W is passed is taken up together with the electric wire W from the upper surface opening 11 of the tube holding table 2.

Next, as shown in FIGS. 3 (c) and 3 (d), the operator turns the lifted electric wire W vertically, and the heat-shrinkable tube 1 picked up is surely placed on the outer periphery of the electric wire W on the root side. Be attached.

As described above, according to the method of mounting the electric wire protection tube and the supply device of the present embodiment, the electric wire protection tube is held by holding the electric wire W with one hand and holding the tip of the electric wire W from the electric wire insertion hole 21 of the stopper 20 to the tube holding base 2. The heat-shrinkable tube 1 can be attached to the outer periphery of the electric wire W simply by inserting it into the internal space of 1 and lifting the electric wire W. Therefore, the heat-shrinkable tube 1 can be easily attached to the outer periphery of the electric wire W with one hand in a short time. In FIG. 3, the opposite hand holds the other end of the electric wire W, but the hand involved in mounting the heat-shrinkable tube 1 is limited to one hand by not having to hold the heat-shrinkable tube 1. Therefore, it was possible to attach the opposite hand, which became free, to other parts.

Further, since the tip of the electric wire W can be passed through the heat-shrinkable tubes 1 that are slide-supplied to the same position one after another on the inclined chute 10, an extra space can be taken only by providing one inclined chute 10. Instead, the heat-shrinkable tube 1 can be efficiently attached to the outer periphery of the electric wire W. That is, as a comparison target, a plurality of heat-shrinkable tubes can be arranged side by side, and electric wires can be passed through each heat-shrinkable tube one after another, but this requires space for arranging the heat-shrinkable tubes side by side. , The insertion position of the electric wire must be moved laterally one after another, but since the electric wire W can be passed at the same position, no extra space is required and the efficiency is improved.

Further, after the heat-shrinkable tube 1 is attached to the tip of the electric wire W, the heat-shrinkable tube 1 is simply moved along the electric wire W to a portion requiring protection (protected portion Wa) and heat-treated at that position. , The protected portion Wa can be protected by the heat shrink tube 1. As shown in FIG. 3, by providing the heating heater 100 near the lower end of the inclined chute 10, the heat shrinkage treatment after the heat shrinkage tube 1 is attached can be smoothly proceeded.

In the above embodiment, the heat-shrinkable tube is taken as an example of the electric wire protection tube, but an electric wire protection tube other than the heat-shrinkable tube may be used.

Here, the mounting method of the electric wire protection tube and the features of the electric wire protection tube supply device according to the above-described embodiment of the present invention are briefly summarized and listed below in [1] to [5], respectively.
[1] In the method of attaching the electric wire protection tube (1) to the outer periphery of the electric wire (W), the electric wire protection tube (1) is attached.
The process of setting the wire protection tube (1) on the tube holding base (2) that holds the tube in an inclined posture, and
The tip of the electric wire (W) is inserted into the electric wire insertion hole (21) of the stopper (20) for preventing the tube from falling off, and the tip of the electric wire (W) is held by the tube. The process of passing through the internal space of the electric wire protection tube (1) held on the table (2), and
By taking out the electric wire (W) inserted into the electric wire insertion hole (21) from the slit (22) provided in the stopper (20) upward, the electric wire through which the tip of the electric wire (W) is passed is passed. The step of picking up the protective tube (1) from the upper surface opening (11) of the tube holding table (2), and
Equipped with
A method of mounting the electric wire protection tube (1), which is characterized by the above.

[2] The electric wire protection tube (1) is a heat-shrinkable tube (1) for covering and protecting a protected portion (Wa) located at an arbitrary position in the length direction of the electric wire (W).
The method for mounting the electric wire protection tube (1) according to the above [1].

[3] A tube holding base (2) capable of holding the electric wire protection tube (1) in an inclined posture, and
A stopper (20) arranged at the lower end of the tube holding base (2) and set on the tube holding base (2) to prevent the electric wire protection tube (1) from falling off.
Equipped with
The stopper (20) has an electric wire insertion hole (21) for inserting an electric wire (W) whose tip passes through the internal space of the electric wire protection tube (1) held by the tube holding base (2). A slit (22) for taking out the electric wire (W) inserted into the electric wire insertion hole (21) upward is formed.
In the tube holding base (2), when the electric wire (W) is taken out upward from the slit (22) of the stopper (20), the electric wire protection tube (1) through which the tip of the electric wire (W) is passed is passed. ) Is provided with an upper surface opening (11) that allows the tube holding table (2) to be picked up.
The electric wire protection tube supply device (M), which is characterized by the above.

[4] The tube holding base (2) is provided as a lower end region of an inclined chute (10) for sliding the electric wire protection tube (1) inserted from the upper end (10a) toward the lower end (10b). ,
The electric wire protection tube supply device (M) according to the above [3].

[5] The tip of the electric wire (W) when the tip of the electric wire (W) is inserted into the electric wire insertion hole (21) on the side opposite to the side of the stopper (20) in contact with the electric wire protection tube (1). Is provided with a guide (30) for guiding the wire to the electric wire insertion hole (21).
The electric wire protection tube supply device (M) according to the above [4].

1 Heat shrink tube (electric wire protection tube)
2 Tube holder 10 Inclined chute 10a Upper end 10b Lower end 11 Upper surface opening 20 Stopper 21 Wire insertion hole 22 Slit 30 Guide table (guide)
M Wire protection tube supply device W Insulation coated wire Wa Protected part

Claims (5)

Attaching the electric wire protection tube to the outer circumference of the electric wire In the method of attaching the electric wire protection tube,
The process of setting the wire protection tube on the tube holding base that holds the tube in an inclined posture, and
A step of inserting the tip of an electric wire into an electric wire insertion hole of a stopper for preventing the tube from falling off arranged at the lower end of the tube holding table, and passing the tip of the electric wire through the internal space of the electric wire protection tube held by the tube holding table. When,
By taking out the electric wire inserted into the electric wire insertion hole upward from the slit provided in the stopper, the electric wire protection tube through which the tip of the electric wire is passed is taken up from the upper surface opening of the tube holding table. ,
Equipped with
How to attach the electric wire protection tube. The electric wire protection tube is a heat-shrinkable tube for covering and protecting a protected portion located at an arbitrary position in the length direction of the electric wire.
The method for mounting an electric wire protection tube according to claim 1. A tube holder that can hold the wire protection tube in an inclined position,
A stopper arranged at the lower end of the tube holding table to prevent the electric wire protection tube set on the tube holding table from falling off, and a stopper.
Equipped with
The stopper has an electric wire insertion hole for inserting an electric wire passing through the internal space of the electric wire protection tube held in the tube holding base, and a slit for taking out the electric wire inserted through the electric wire insertion hole upward. And are formed,
The tube holding table is provided with an upper surface opening that allows the electric wire protection tube through which the tip of the electric wire is passed to be picked up from the tube holding table when the electric wire is taken out upward from the slit of the stopper. ,
A wire protection tube supply device characterized by that. The tube holding base is provided as a lower end region of an inclined chute that slides the electric wire protection tube inserted from the upper end toward the lower end.
The electric wire protection tube supply device according to claim 3. A guide is provided on the side of the stopper opposite to the side in contact with the wire protection tube to guide the tip of the wire to the wire insertion hole when the tip of the wire is inserted into the wire insertion hole.
The electric wire protection tube supply device according to claim 4.

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