JPS6246464B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for drawing out welding wire in a pack, and in particular, it simplifies the internal structure of the wire storage part, reduces the resistance to drawing it out, and is devised to prevent new bending from occurring during drawing out. The present invention relates to a method for drawing out packed welding wire.

In automatic and semi-automatic welding, large packages are being developed to increase the amount of welding wire that can be held and shorten changeover time. demand is increasing. When drawing out the welding wire, it is necessary to be able to draw out the wire smoothly and to prevent it from breaking other winding layers or from getting entangled with each other.

By the way, the wire housed in a cylindrical container (hereinafter referred to as a "pale container") is stored in a coiled form while forming a loop with an inner diameter smaller than the inner diameter of the container, so it is difficult to increase the coil diameter due to its own rigidity. This force is held by the adjacent wires and the walls of the pail container. However, as these holdings are released when the coil is pulled out, it causes springback, which disturbs or breaks other coil layers and causes them to become entangled, making it difficult to pull out as well as fluctuating the pull-out resistance, making it difficult to draw out smoothly. It may disappear. In particular, recent pail container storage wires use a storage method that applies one twist per wheel when stored to prevent twisting when pulled out, and the springing force in the stored state is even greater. There is. Therefore, the conventional pail container is constructed in a double cylinder shape as shown in FIG.
In addition, a presser member 4 is placed on the upper surface of the stack, and an elastic body 5 prevents the wire 3 from jumping up. Further, a drawer guide member 6 is provided at the upper end of the inner cylinder 2, so that the wire 3 can be drawn out smoothly.

However, in this storage method, the wire 3 is attached to the inner corner 4a of the presser member 4 and the inner cylinder 2 during the drawing process.
Since the guide member 6 and the outer circumferential surface of the guide member 6 are in contact with each other at at least three locations, the friction at these locations increases the pulling resistance considerably. Moreover, since a bending force is applied to the wire 3 at each of the above-mentioned contact points, the wire 3 after being drawn out has irregular and complicated bends, which have to be straightened using a large number of straightening rolls. be. Moreover, in this type of container, the inner cylinder 2 becomes an obstacle, making it complicated to wind and store the wire 3, and the structure of the container itself becomes complicated and expensive due to the large number of attached parts inside, resulting in various problems. There is. Furthermore, since the height of the inner cylinder is at the same level as the height of the outer cylinder, in order to smoothly pull out the wire, it is necessary to provide the wire guide hole of the drawing device at a position 200 mm or more higher than the upper lid surface of the pack.

The inventors of the present invention have focused on the above-mentioned circumstances, and have conducted research in order to simplify the internal structure of the pail container itself, and to establish a storage method that can reduce the resistance when pulling out the wire and reduce the new bending. It's here. The present invention was completed as a result of such research, and has a structure in which a welding wire is curved into a loop shape having a smaller diameter than the inner diameter of a single-cylindrical pail container, and is attached to a substantially cylindrical container in the center of the container. In a method for pulling out wires from a welding wire storage pack, the wires are stacked and stored so as to form a shaped cavity, and a holding member that descends as the wire is pulled out is disposed on the top surface of the stacked layers. A circular guide opening for the drawer is provided, an elastic material is provided at at least two places on the outer periphery, a gap is formed in the height direction between the guide opening and the top lid of the container, and a wire is provided at the position of the top lid. The gist is that a pull-out hole is provided, the welding wire is guided along the inner peripheral edge of the circular guide port, and further passed through the pull-out hole and pulled out.

As shown in FIG. 2 (partially cutaway diagram) and FIG. 3 (partially cutaway side view), the pack to which the withdrawal method of the present invention is applied is made of The welding wire 3 is wound and laminated so as to be in close contact with the inner circumferential wall, and a sufficient space _S1 is formed on the inner circumferential side of the laminated portion. The method of winding the wire 3 is not particularly limited, but in order to prevent the upper and lower loops from becoming entangled and to ensure that the wire 3 can be pulled out sequentially from the upper layer, the loops are wound one after another eccentrically as shown in FIG. The so-called twill method is most preferred. In addition, a holding plate 4 is placed on the upper surface of the wire winding stack to prevent the wire 3 from jumping upwards, and in the center of this holding member 4 is a circular guide hole 6 for drawing out the wire. ', and an elastic member 5 is fixed to the outer peripheral edge side and brought into pressure contact with the inner wall of the outer cylinder 1. The pressing force of the elastic member 5 allows the holding member 4 to descend under its own weight as the weight of the wire 3 decreases, and on the other hand, the holding member 4 and the wire 3 themselves are not lifted upward due to the springing force of the wire. Adjust as needed. A predetermined gap S ₂ (preferably about 50 to 350 mm) is formed between the guide port 6 provided in the holding member 4 and the ceiling (upper wall 7) of the container. It is desirable that the lower corner of the inner peripheral edge of the guide port 6 be formed by a curved surface in the thickness direction, as shown in FIG. 5, to reduce friction with the wire 3. In addition, a wire pull-out hole is provided at the position of the upper lid 7,
As shown in FIG. 3, this pull-out hole may be provided approximately at the center of the top cover 7, and a pull-out device (not shown) may be placed on the top cover. The drawer device 9 may be attached to the top lid.

In such a system, the resistance that the wire 3 receives when being pulled out is only the friction generated at the contact portion with the inner surface of the guide port 6', and at least the conventional example (first example)
The resistance caused by the friction between the outer peripheral surface of the inner cylinder 2 and the guide member 6 as pointed out in FIG. 2 is eliminated, and the pull-out resistance can be significantly suppressed. Furthermore, since the bending force applied to the wire 3 at the contact portion only needs to be applied once, the bending force generated during the drawing process can be reduced to one-third. Furthermore, the wire is not affected by the elastic body provided at the outer edge of the presser member in order to pull out the wire along the inner peripheral edge of the circular guide port of the presser member. Furthermore, a certain gap is provided between the guide port 6' and the upper cover 7, and by omitting the inner cylinder, a sufficient gap is also formed in the center, so that the wire 3
is guided from the guide port 6' in a relatively large loop toward the pull-out hole 8 provided at the height of the top cover. Therefore, the bending provided in this part is extremely small, and considering the bending of the wire 3 during storage, the bending provided in the above-mentioned drawing process is practically negligible, and the drawing device also Even with this simplification, it becomes possible to significantly simplify or omit the straightening process after drawing out. The main body of the container is generally made of insulating material such as fiber to prevent electrical leakage accidents during welding, but it is also possible to use steel material as long as sufficient insulation is applied. In this case, a container with high strength can be obtained, which is suitable for repeated use as a returnable box.
The most common insulation treatment method is to laminate the inner and outer surfaces of the container with an insulating material.

Next, the presser member is a member that presses the upper surface of the wire winding stack to prevent the wire from jumping up as described above, has a wire pull-out guide opening in the center, and has elastic bodies at at least two locations on the outer edge. It can be of any shape as long as
Alternatively, as shown in FIG.
The structure assembled in step 1 can be used. In particular, in the case of the latter holding member, since the inner circumferential surface of the wire extraction guide port 6' is formed as a circularly curved surface, the friction of the wire in this portion can be suppressed to a minimum. Furthermore, if a material with a low coefficient of friction such as Teflon is attached or coated on this inner circumferential surface, the pull-out resistance can be further reduced.

In addition, a viewing window 1 is installed on a part of the outer peripheral wall of the pale container.
2 (see Figure 3), or by providing a slit, or by forming part or all of the upper lid 7 and the container placement part of the wire pull-out device 9 from a transparent material so that the amount of wire remaining inside can be confirmed from the outside. It can also be done.

The present invention is constructed as described above, and its effects can be summarized as follows.

The internal structure of the storage section is extremely simple, reducing the manufacturing cost of the storage container and making it possible to reduce the weight of the container itself.

Since the wire contacts only one point during extraction and there is little friction, the wire can be extracted smoothly with little force.

Sufficient clearance is formed inside and above the wire stack, and the wire is pulled out in a large loop, so the wire is less likely to be bent. Therefore, the wire drawing device can be simplified, and the correction after drawing can be simplified.
In some cases, it may be omitted.

Since there are no obstacles inside the container, the wire can be easily wound and stacked while winding the guide tube 11 as shown in Fig. 9, and the wire storage work is also easy. It can be significantly simplified.

When using a conventional storage container with an inner cylinder, the wire may become wrapped around the inner cylinder and become impossible to pull out, but in the present invention, since the inner circumference of the loop is a space, there is a risk that such a phenomenon may occur. There are none.

[Brief explanation of the drawing]

Fig. 1 is a partially broken sketch showing the state of pulling out a conventional pail container storage wire, and Fig. 2 and subsequent figures show examples of the present invention, with Fig. 2 being a partially broken sketch and Fig. 3 being partially broken. A side view, FIG. 4 is an explanatory view showing an example of winding and lamination, FIG. 5 is a partially sectional view showing a wire pull-out guide port, FIG. 6 is a partially cutaway sketch showing another embodiment, and FIGS. The figure is a sketch diagram illustrating the holding member, and FIG. 9 is an explanatory diagram illustrating a method for winding and storing the wire. 1... Outer cylinder, 2... Inner cylinder, 3... Wire, 4...
...Press member, 5...Elastic body, 6'...Wire draw-out guide port, 7...Top lid, 8...Wire draw-out hole.

Claims (1)

[Claims] 1 Welding wires are stacked and stored in a monocylindrical pail container while being bent into a loop shape with a diameter smaller than the inner diameter of the container to form a substantially cylindrical cavity in the center of the container, and the wires are placed on the top surface of the stack. In a method for pulling out a wire from a welding wire storage pack comprising a holding member that descends as the holding member is pulled out, a circular guide hole for drawing out the wire is provided in the center of the holding member, and at least two places on the outer peripheral edge are provided with elastic A gap is formed in the height direction between the guide port and the top lid of the container, and a wire pull-out hole is provided at the top lid, and the welding wire is inserted into the inner peripheral edge of the circular guide port. A method for drawing out a welding wire in a pack, which comprises pulling the wire along the wire, passing through the drawing hole, and drawing it out.