JPS60251012A - Method of packaging wiring bundle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for packaging a wire bundle obtained by winding a required amount of electric wire or other wire material.

[Background of the invention]

Conventionally, winding bundles are packaged by wrapping a tape of a predetermined width around the outer periphery of the wire bundle in a spiral manner, or by wrapping a tape of a predetermined width around the edges of a plastic film or sheet (hereinafter referred to as film). There is a method of attaching a predetermined length of film vertically to the winding bundle by tightening or tying the tightening string.

However, the wrapping method has poor packaging workability.
Furthermore, when using wire rods, it takes time to unpack, and the work efficiency is reduced due to the bundles becoming loose.

On the other hand, the method of vertically attaching the film has drawbacks such as poor work efficiency because most of the work is done by hand, and the range of packaging applications is limited due to the strength of the film material.

[Purpose of the invention]

The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art, significantly improve the efficiency of packaging work, prevent deformation during transportation, and eliminate unwrapping work, etc., and provide a novel method for packaging bundles of windings. Our goal is to provide the following.

[Summary of the invention]

The gist of the present invention is to use two heat-shrinkable plastic films as packaging materials, insert a winding bundle between the two plastic films, and arrange the plastic film vertically around the outer periphery of the winding bundle. After the plastic film is attached to the wire, the winding bundle to which the plastic film is attached is heated to shrink the attached plastic film. In this case, it is desirable to use a plastic film that has a small shrinkage rate in the width direction and a shrinkage rate in the longitudinal direction that is about 10 to 13 times thicker than that in the width direction.
It is also desirable to select a width such that when it is attached to the winding bundle and contracted, its side edges are slightly inside the inner diameter of the winding bundle.

[Embodiments of the invention]

The present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a wrapped wire bundle. The wire bundle 1 is wrapped and fixed on its outer periphery and both sides with a wrapper 2 made of heat-shrinkable plastic, for example, a polyethylene film. It is formed as follows. A predetermined amount of wire is wound into a predetermined shape using a winding device, and the appropriately bundled wire bundle 1 is placed in an upright state on the table of the bundle delivery device 3, as shown in FIG. . On the table of the device 3 is a guide 3 that holds the winding bundle 1 in a standing position.
The winding bundle 1 can be transferred onto the conveyor 5 by actuation of the pusher 31. The conveyor 5 is operated after the winding bundle 1 is fitted with a wrapper 21 made of a heat-shrinkable plastic film, and is configured to transport the winding bundle 1 onto the following conveyor 5 and then stop.

A sealing device 4 which also serves as a cutter is arranged immediately before the conveyors 4 and 5. This sealing device 4 is activated after the winding bundle 1 is supplied to the conveyor 5, and as shown in FIG. At the same time, the cutter 4 seals the two places in a line with the blade 41.
2 allows you to disconnect and return. Therefore, the leading ends of the films 22 and 23 are normally welded and connected, and when the winding bundle 1 is supplied onto the conveyor 5, the films 22 and 23 are pushed by the winding bundle 1 and pulled out one after another. It is attached vertically so as to cover the outer periphery of the wire bundle 1. The conveyor 6 following the conveyor 5 passes through a heating device 7 equipped with heating means using hot air, and conveys the placed winding bundle 11 in a standing state, and heats the winding bundle 11 for a certain period of time. It can be heated to a predetermined temperature.

In FIG. 2, 71 is a curtain attached to the entrance/exit of the heating device 7, and 8 is a conveyor for transporting the wrapped wire bundle 12 to the unloading station.

When wrapping the winding bundle 1 using a device having such a configuration, first, the ends of the films 22 and 23 are pulled out and sealed and connected to each other. In this case, each film 22,
23 has a width approximately equal to the outer circumference of the winding bundle 1, which has a small contraction rate in the width direction, a contraction rate in the longitudinal direction that is about 10 times thicker than that in the width direction, and is shown in FIG. Set the winding bundle l so that it is located at the center in the width direction. In this state, when the pusher 31 is operated to transfer the winding bundle 1 to the conveyor 5 side, the winding bundle 1 moves forward while pulling out the films 22 and 23, and reaches a predetermined position on the conveyor 5 as shown in FIG. It is placed in the position of

At this time, the sealing device 4 operates to seal and cut the films 22 and 23 at the same time, so the winding bundle 1 is fitted with a package 21 made of the films 22 and 23, and the films 22 and 23 are cut.
2.23 tips are welded together. After this conveyor 5
When activated, the winding bundle 11 with the package 21 attached is transferred to the conveyor 6, passes through the heating device 7 while standing, and is heated, so the package 21 is thermally shrunk and becomes the winding bundle. It is fixed to the winding bundle 1 in a state in which the outer periphery of the wire bundle 1 is closely covered, and both side edges are bent to cover both sides of the winding bundle 1 as shown in FIG.

As in this example, if the winding bundle 1 is heated in an upright state, the package 21 is hardly restrained. You can get a clean finish without having to do anything.

The winding bundle 12 that has passed through the heating device 7 is then transported to a loading station by a conveyor 8 while being continuously cooled.

By repeating this process, the winding bundle 12 wrapped with plastic film as shown in FIG. 1 can be efficiently obtained. The inner periphery of the winding bundle 12 may be covered with a piece of paper having a predetermined length and width. In that case, the piece of paper may be shaped into a cylinder in advance to match the inner diameter of the winding bundle 1.

The paper piece may be attached before or after the package 21 is attached. In addition, when pulling out a wire from the winding bundle according to the present invention, it is not necessary to unwrap the wire as the ends of the wire can be easily pulled out from inside the bundle without losing its shape by untying the bundle.

Furthermore, since the wire is covered and fixed with a heat-shrinkable plastic film, there is no risk of the wire rod becoming tangled due to deformation due to vibration during transportation.

Incidentally, a heat-shrinkable polyethylene film with a thickness of 0.08 to 0.12 mm and a shrinkage rate of 75% in the length direction and 7.5% in the width direction is used, and it is made as shown in the example to have an outer diameter of 300 mm. ~45
Attach it to 0mm wire bundle 1, and leave the bundle upright with a length of about 1.
When the winding bundle 12 was passed through a 7 m hot air heating furnace at a speed of 2.5 to 3 m/mm, the wire bundle 12 was covered and fixed with the wrapping body 2 without wrinkles or sag in the side lines.

〔Effect of the invention〕

As is clear from the above explanation, two heat-shrinkable plastic films with a large shrinkage rate in the longitudinal direction are used, and a winding bundle is placed between the two films so that the films are vertically attached to the outer periphery. This method heats the winding bundle to which the film is attached after it has been attached, causing the attached film to shrink due to heat, so there is no wastage of film, and packaging work can be continued for long periods of time, greatly improving packaging work efficiency. At the same time, the cohesiveness of the packaging is increased, and deformation during transportation can be completely prevented. Further, since the wire can be pulled out from inside the bundle, which is the starting end of the wire, there is also the advantage that there is no need to unwrap it.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a winding bundle obtained by the method of the present invention, FIG. 2 is an explanatory diagram showing an example of the method according to the present invention, and FIGS. FIG. 5 is an explanatory view showing the state in which the plastic films are attached. 1.11 and 12: winding bundle, 2 and 21: package. 3: undelivered device, 4: sealing device, 5, 6 and 8: conveyor, 7: heating device, 22 and 23: heat-shrinkable plastic film. Yu 1 old ll! l

Claims (1)

[Claims] 1. A winding bundle is placed between two heat-shrinkable plastic films that have a high shrinkage rate in the longitudinal direction, and the plastic film is attached to the outer periphery of the winding bundle so that it is attached vertically. and a step of heating the winding bundle to which the plastic film is attached to shrink the plastic film. 2. The method according to item 1 above, wherein the ends of the plastic film are connected to each other before being attached to the winding bundle. 3. The plastic film according to item 1 or 2 above, has a width such that when it is attached to the winding bundle and contracted, its side edges are inside the inner diameter of the winding bundle. Method. 4. The method according to any one of items 1 to 3 above, wherein a plastic film is attached to the outer periphery of the winding bundle in an upright state. 5. The method according to any one of items 1 to 4 above, wherein the winding bundle with the plastic film attached thereto is heated in an upright state.