JPS5935344Y2 - Manufacturing equipment for metal tubes containing plastic coated filaments - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for manufacturing a metal tube containing a plastic-coated filament.

For example, 0.511! In order to protect a thin plastic-coated filament such as +71φ from tension and from water, heat and stress, the plastic-coated filament is housed in a metal tube of, for example, 2 to 6rIrInψ. things are being done.

It is extremely difficult to manufacture a thin and long metal tube and then insert a thin and long plastic-coated filament into it, so the plastic-coated filament is inserted into the metal tube during production. .

That is, a plastic-coated filament is attached vertically to a metal tape such as SUS% AI 1Cu, and the metal tape is sequentially formed to incorporate the plastic-coated filament to form a pipe. Manufactured by sequential welding.

In this case, welding has conventionally been performed by electric welding such as TIG welding.

However, in this manufacturing method, electric welding causes a lot of metal penetration, and when this melt penetration cools down, the heat is transferred to the plastic-coated filament through the metal tube, which has good thermal conductivity. This has the disadvantage of thermally damaging the plastic coating.

An object of the present invention is to provide an apparatus for manufacturing a metal tube containing a plastic-coated filament, which can be manufactured without causing thermal damage to the plastic-coated filament.

The apparatus for producing a metal tube containing a plastic-coated filament according to the present invention includes vertically attaching a metal hoop material to a plastic-coated filament body, and passing the metal hoop material over a plurality of forming rolls arranged along the running direction of the metal hoop material. When manufacturing a metal tube with a plastic-coated filament by forming the pipe to incorporate the plastic-coated filament and welding the seam of the tubular metal hoop material, the forming roll is used as a cooling medium. This cools the metal hoop material and prevents the internal plastic-coated filament from being thermally damaged by the heat during welding.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, in the apparatus for manufacturing nine metal tubes containing plastic-coated filament bodies of this embodiment, the plastic-coated filament body 1A is provided with a plastic coating 1B on the outer periphery of the filament body 1A. The metal hoop material 2 is fed out while being attached vertically to the body 1.

The metal hoop material 2 is gradually formed so as to incorporate the plastic-coated filament 1 by forming rolls 3 that face each other on both sides in the width direction and are arranged in multiple stages in the running direction of the metal hoop material 2. , pipe-formed.

The seam 2A of the pipe-formed metal hoop material 2 is arc welded by an arc emitted from an electrode 4 of a welding machine, resulting in a metal pipe 5 containing a plastic-coated filament.

A roll body 6 of each forming roll 3 is rotated by a housing of a shaft 8 via a bearing 1.

The upper end of the roll body 6 is closed with a lid 9.

An inner cooling passage 10 is formed at the axis of the shaft 8, and an outer cooling passage 11 is formed between the shaft 8 and the roll body 6, and these cooling passages 10.11 are formed between the upper end of the shaft 8 and the lid 9. They are communicated through a communication path 12 between them, and a reciprocating cooling path 13 is formed within the forming roll 3.

Shaft 8
A groove 14 is partially formed in the groove.

A cooling medium such as water is flowed through the reciprocating cooling passage 13, so that the roll body 6 is cooled.

According to such a device, the metal hoop material 2 is formed by the fuming roll 3 and is cooled before coming to the welding location and welded, so that the heat during welding is transferred to the metal hoop material 2.
It is possible to prevent the plastic-coated filament body 1 from being heated through the plastic coating and the plastic coating 1B from being thermally damaged.

Moreover, even if the forming roll 3 receives welding heat, since it is cooled, the forming roll 3 can be rotated stably, and forming can be performed stably.

FIG. 3 shows another embodiment of the forming roll 3. In FIG.

In this embodiment, the outer cooling passage 11 between the roll body 6 and the shaft 8 is formed by providing a spiral groove on the inner periphery of the roll body 6.

In this way, the roll body 6 can be rotated by the flow of a cooling medium such as water passing through the outer cooling passage 11.

When the rotation speed is changed by adjusting the flow rate of the cooling medium to match the traveling speed of the metal hoop material 2, the frictional resistance between the metal hoop material 2 and the forming roll 3 is reduced, making forming more stable. be able to.

Experimental example (A) Stainless steel tube containing a 1.0 mm ψ plastic-coated filament 4. A forming roll shown in FIG. 1 was used as a forming roll for forming a pipe of OranψX0.2 mmt.

As a result of using this forming roll, no damage to the plastic-coated filament due to welding heat was observed.

Since the temperature conditions of the splintered Group 4 hoop material have stabilized, continuous pipe production can now be carried out stably without causing welding defects.

@1. A forming roll shown in FIG. 3 was used as a forming roll for forming a 5.0 mm ψ x 0.5 mt aluminum tube containing a plastic-coated filament of Om ψ.

Water was used as a cooling medium, the water bottle was 3 to 5 kg/i, and the flow rate was 1077 mm.

In this case as well, no damage to the plastic-coated filament due to welding heat was observed.

In addition, the temperature conditions for the metal hoop material have become stable, allowing continuous pipe production to be carried out stably without causing welding defects.

Note that cooling of the forming rolls may be performed on all of the forming rolls, or may be performed only on the forming rolls near the welding location.

Furthermore, the filament body of the plastic-coated filament body is as follows:
Copper wires or optical fibers of about 125 μm may be considered, and the plastic coating may be nylon, Teflon, polypropylene, vinyl chloride, etc.

Alternatively, the cooling medium may be introduced from one end of the roll body in the axial direction and taken out from the other end.

As explained above, in the present invention, since the forming roll is structured to be cooled with a cooling medium, the metal hoop material can be cooled when forming the metal hoop material with the forming roll, and therefore, the metal hoop material can be welded. It is possible to prevent the internal plastic-coated filament from being thermally damaged by the heat of the time.

Furthermore, according to the present invention, even when the forming roll receives welding heat, it is cooled, so it can be rotated stably, and forming can be performed stably.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of one embodiment of the device according to the present invention;
The figure is a sectional view taken along the line X--X of FIG. 1, and FIG. 3 is a longitudinal sectional view showing another embodiment of the forming roll used in the present invention. DESCRIPTION OF SYMBOLS 1... Plastic coated filamentous body, 1A... Filiform body main body, 1B... Plastic coating, 2... Metal hoop material, 2A... Seam, 3... Forming roll,
4... Welding electrode, 5... Metal tube with plastic coated filament, 6... Roll body, 7... Bearing, 8...
- Shaft, 10... Inner cooling passage, 11... Outer cooling passage, 13... Reciprocating cooling passage.

Claims (1)

[Scope of utility model registration request] A metal hoop material is attached vertically to the plastic-coated filament, and a pipe is formed by forming the plastic-coated filament to incorporate the plastic-coated filament using coating forming rolls disposed along the running direction of the metal hoop material to form a tube. In the manufacturing apparatus for manufacturing a plastic-coated filament-filled metal tube by welding the seam of the metal hoop material, a cooling passage for cooling the forming roll is provided at least in the forming roll near the welding location. A manufacturing device for a metal tube containing a plastic-coated filament, characterized by: