JPH0218034Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention enables, for example, in a pail pack-wound wire for gas-shielded arc welding, when the entire amount of wire in the previous stage pail pack has been pulled out, the wire can be wound in the next stage without interrupting the wire withdrawal at all. This invention relates to a wire wrapped in a pail pack that allows the wire inside the pail pack to be continuously pulled out.

Conventional wire wrapped in a pail pack has the disadvantage that once the entire amount of wire in the pail pack in use has been drawn out, the wire must be temporarily withdrawn and the use stopped in order to replace it with the next pail pack. .

This temporary interruption is a major cause of a decrease in the operating rate, for example, in a production line where a plurality of pail packs are used, and if one of them is interrupted, the entire line stops.

For example, in recent years, with the development of arc welding robots, the number of welding assembly lines that use multiple arc welding robots as a set has increased, but normally one arc welding robot has one wire wrapped in a pail pack. When the wire wrapped in a single pail pack is fully drawn out and used, not only the robot that was using that pail pack, but all the robots on that line generally stop, and the operating rate decreases. Top (productivity)
It was becoming a big problem.

For example, if there is a line with 20 arc welding robots and the operating rate of one robot is 99.5%, the operating rate of the entire line will drop to 0.995 ²⁰ =90.5%.

Therefore, there has been a strong desire to shorten the time required to replace the pale pack, and ultimately to eliminate the time required to replace the pale pack.

In addition, a special feature of arc welding is that welding defects such as poor bead appearance and cracks are likely to occur at interrupted parts of welding, and from this point of view as well, there is a demand for eliminating welding stops when replacing the pale pack. It was hot.

The present invention was realized as a result of numerous tests and trials in response to such demands, and examples thereof will be described below with reference to the drawings.

FIG. 1 schematically shows the structure of a wire wrapped in a pail pack according to the present invention. In FIG. 1, 1 is a pale pack, and 2 is a wire. 1b, and when the drawer is in use, the wire terminal end 2a is drawn out in advance above the stored wire 2 along the inner surface of the outer cylinder 1a.

Note that 2b is the starting end of the wire used for drawing out.

The wire end portion 2a that has been drawn out is connected to the second wire end portion 2a.
As shown in the figure, it is connected to the wire starting end 2b in the next pail pack 1, and the wire terminal end 2a in the next stage pail pack 1.
Similarly to the above, the storage wire 2 is drawn out in advance along the inner surface of the outer cylinder 1a above the storage wire 2.

Wire end portion 2 in the preceding pail pack 1
In the case of a steel wire, for example, butt welding is generally used as the connection means for connecting the wire starting end 2b of the pail pack 1 to the wire start end 2b of the next stage pail pack 1.

In addition, since the wire terminal end 2a of the previous stage pail pack 1 is in a stationary state until just before it is pulled out, the connection with the wire start end 2b of the next stage pail pack 1 can be made at any time during use. .

Further, the length of the wire end portion 2a to be drawn out of the pail pack 1 to facilitate the connection work is usually 30 cm or more when using a small portable butt welding machine, for example, in the case of connection by butt welding.

As shown in FIGS. 1 and 2, an annular pull-out jig 3 is placed in the upper part of the inner cylinder 1b of the pail pack 1 at a position such that a space g is formed between it and the upper surface of the storage wire 2. The wire 2 is fixed so as to be substantially concentric with the inner cylinder 1b, and the wire 2 passes between the outer cylinder 1a and the drawing jig 3 and is drawn upward.

The drawer jig 3 is called an external drawer jig, and on the other hand, it is a type in which the wire 2 passes between the inner cylinder 1b and the annular drawer jig 3 and is drawn upward. There is a type called an internal drawer jig.

In the case of the pail pack-wound wire according to the present invention, in order to smoothly switch and draw out the wire between the pail packs 1, it is necessary to use a removable drawing jig.

If an internal drawer jig is used, the wire 2 passes through the annular inner drawer jig, so when changing the wire between the pail packs 1, the wire 2 will be pulled out. This is because it is impossible to separate from the jig, and therefore it becomes impossible to switch and pull out the wires between the pail packs 1.

In addition, as shown in FIGS. 1 and 2, the wire 2 removal type drawer jig 3 includes a fixed type that is fixed to the upper part of the inner cylinder 1b of the pale pack 1, and a pale pack that is not shown in the drawing. Although there is a descending type which descends as the weight of the storage wire 2 in the drawer 1 decreases, in order to achieve the purpose of the present invention, a fixed type drawer jig 3 is required.

The reason is that the starting end 2b of the wire being pulled out
However, since it can move freely in the space g, it is not constrained, and when the wire is switched between the pail packs 1, the wire may be bent or the wire may get caught in the drawing jig 3. This is because troubles are less likely to occur.

In addition, in the fixed type drawer jig 3, since there is a space g between the storage wire 2 and the drawer jig 3, even if the storage wire 2 has some lamination disorder, the above-mentioned It also has the advantage that it loosens in the space g and therefore does not become tangled and become impossible to pull out.

Examples of the removable fixed type drawer jig 3 include those shown in FIGS. 3 to 5.

The drawer jig 3 shown in FIG.
and an inner cylinder mounting member 3c.

Note that the elastic body 3b may have a linear shape, a plate shape, or the like.

The drawer jig 3 shown in FIG. 4 has a band-shaped or plate-shaped elastic body 3b for preventing the wire from jumping up at a right angle or an angle close to the same to the surface of the annular jig main body 3a.

The drawer jig 3 shown in FIG. 5 includes an annular elastic sheet 3b provided on the outer periphery of an annular jig main body 3a.

Alternatively, although not shown, the entire drawing jig may be made of a single piece of plastic, or the drawing jig may be a plastic sheet inflated with air.

In addition, when used in a dusty place, it is recommended to install a dustproof plate at the upper opening of the pale pack. For example, as shown in FIGS. It is preferable to place a dustproof plate 4 having an outer diameter slightly smaller than the inner diameter of the dustproof plate 4, and to allow the wire 2b on the drawer side to pass between the outer cylinder 1a and the dustproof plate 4.

As the dustproof plate 4, there are those shown in FIGS. 6 to 10.

The dustproof plate 4 shown in FIG. 6 is provided with a peripheral wall 4a whose peripheral edge is raised to prevent dust on the plate surface from falling into the pale pack 1.

The dustproof plate 4 shown in FIG. 7 is shaped like a plate to prevent dust on the plate surface from falling into the pale pack 1.

The dustproof plate 4 shown in FIG. 8 has a hole 4b in the center of the inner cylinder 1b so that wire scraps, packaging scraps, etc. can be thrown away.

The dustproof plate 4 shown in FIG. 9 is provided with a convex portion 4c, a concave portion 4d, or both on the peripheral edge to provide resistance to the wire 2b being drawn out and to prevent the wire 2 from jumping up. be.

The dustproof plate 4 shown in FIG. 10 is provided with an elastic body 4e on the periphery to prevent the wire 2 from jumping up.

The main body 3a and dustproof plate 4 of the drawer jig 3 are preferably made of a transparent material so that the inside of the pail pack 1 can be seen.

Further, the wire end portion 2a of the pail pack 1 before use is fixed to the inner surface of the outer cylinder 1a by any means such as an adhesive tape or a fastener.

Furthermore, at the bottom of the outer cylinder 1a of the pale pack 1,
It is advisable to provide a viewing window for checking the remaining amount of wire 2.

As described above, in the present invention, in a pail pack in which a wire is stored between an outer cylinder and an inner cylinder, the terminal end of the wire is pulled out in advance above the stored wire along the inner surface of the outer cylinder when the drawer is used. The end of this drawn out wire can be connected to the starting end of the wire to be drawn out and used in the spare pail pack to be used next. Therefore, when the entire amount of wire in the previous pail pack has been drawn out,
Since the wire in the next stage pail pack can be automatically and continuously drawn out without interrupting the drawing of the wire at all, it can significantly contribute to improving the operating rate of, for example, an arc welding robot.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the wire wrapped in a pail pack according to the present invention, and Fig. 2 shows the connection state between the end of the wire in the previous stage pail pack when the drawer is used and the wire start end when the drawer is used in the next stage pail pack. 3 to 5 are perspective views showing each embodiment of the wire drawing jig, and FIGS. 6 to 10 are perspective views showing each embodiment of the dustproof plate. 1...Pail pack, 1a...Outer cylinder, 1b...
Inner cylinder, 2...Wire, 2a...Wire terminal end, 2
b... Wire starting end, 3... Wire drawing jig,
4...Dustproof plate.

Claims (1)

[Scope of utility model registration request] A wire is stored between the outer cylinder and the inner cylinder, and the terminal end of the wire is drawn out above the stored wire along the inner surface of the outer cylinder, and the wire is passed between the outer cylinder and the drawing jig. In a pail pack-wound wire that is used for drawing upwards, an annular drawing jig that has an elastic body on the outer periphery and is approximately concentric with the inner cylinder is used.
A pale pack-wound wire characterized in that the wire is fixed to the outer periphery of an inner cylinder so as to form a space between the wire and the upper surface of the storage wire.