JPS599267B2 - How to pull out welding wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a coil by enclosing a certain twist between an inner cylinder and an outer cylinder in a container having a double cylindrical structure (hereinafter referred to as a pack container). This relates to a method for pulling out a welding wire wound into a shape (hereinafter referred to as wire) from a pack container.In detail, when the wire is pulled out for use, it suppresses the floating of the wire due to the force of the twist enclosed in the wire. The purpose of this is to prevent drawer failures and inability to draw due to

Generally, when a wire wound around a pack container is pulled out for welding, the coiled wire inside the pack container sometimes floats up, jumps up onto the pack container, gets entangled with the members that make up the drawing device, or kicks. Once created, it becomes impossible to withdraw.

Furthermore, even if the wires do not jump onto the pack container, the wires floating inside the pack container or the floating wires and the wires being pulled out become entangled, resulting in failure to pull out the wires. Conventionally, the following methods have been tried to prevent such failure or inability to draw.

One of them is that, as shown in FIG.
In this method, a collar 3 is attached which forms a gap 2 between the wire and the upper end of the bag, and the wire 4 is pulled out from the gap 2, and the collar 3 prevents the wire from jumping onto the pack container 1. Note that 4' is a coiled wire. However, in the case of such a drawing method, although it is possible to eliminate the above-mentioned drawing failure to some extent, there is a drawback that the wires 4 become entangled with each other in the pack container 1 and clogging occurs in the gap 2.

Another method is to place a donut disk 5 on the coiled wire 4' of the pack container 1, as shown in FIG. Place the wire 4 through the gap between the donut disk 5 and the inner cylinder 1a.
This is a method to bring out the

However, in the case of such a pulling method, although the wire 4 that is wound up with the twist enclosed has a force that extends toward the outer cylinder lb side, the wire 4 is pulled toward the inner cylinder 1a side against this force. Since the wire 4 is pulled out further, the wire 4 that is being pulled out lifts the donut disk 5 from the surface of the coiled wire 4', and the wire 4 is pulled out between them.
This type of winding is not recommended because the wire 4 may float up and cause a drawing failure, and the wire 4 that is being drawn out is likely to have wire strands other than the predetermined strands at the contact portion with the inner circumferential surface of the donut disk 5. This may impair the linear performance of the weld bead, which is the most important feature of the wire drawn out method. The present invention was developed to solve these conventional drawbacks, and the drawing method according to the present invention will be explained below with reference to the drawings of FIGS. 3 and 4.

An embodiment of the present invention is shown in FIG. 3, and in FIG. 1a
A ring-shaped weight plate 6a having a size such that a gap is provided between the outer cylinder 1b and the outer cylinder 1b, and a ring-shaped elastic contact that is attached to the weight plate 6a and elastically contacts the inner surface of the outer cylinder 1b. This wire holding jig 6 descends as the wire 4' decreases.

Note that the outer diameter of the wire holding jig 6 is determined with a certain dimensional tolerance depending on the relationship with the total weight of the weight plate 6a, but in this embodiment, the outer diameter of the elastic contact body 6b is determined. The outer diameter of the pack container 1 is 10-200 degrees larger. Further, the wire 4 is drawn out from between the wire holding jig 6 and the outer cylinder 1b of the pack container 1.

FIG. 4 shows another embodiment of the present invention. In FIG. A ring-shaped weight plate 7a with dimensions such that a gap is provided between the inner cylinder 1a and the outer cylinder 1b, and a ring-shaped weight plate 7a that is mounted on the weight plate 7a at two places with a mutual interval of 1800 mm. It is composed of a rod-shaped or band-shaped elastic contact body 7b made of rubber or sponge, etc., which elastically contacts the inner surface of the outer cylinder 1b of the pack container 1. It is pulled out from between the cylinder 1b. Further, the elastic contact body 7b is heavy in the inner circumferential direction and is flexible in the direction in which the wire 4 moves so as not to greatly impede the movement of the wire 4 in the process of being drawn out. Here, in the practical example shown in FIG. 4, two elastic contact bodies 7b are provided with an interval of 180 mm, but the present invention is not limited to this embodiment. Four, five, etc. elastic contact bodies 7b may be used, and a ball bearing is further attached to the tip of the elastic contact body 7b, and the wire holding jig 7 is rotated as the wire 4 is pulled out. or
In addition, it is possible to use an elastic contact body such as a hinge that is light in the direction of rotation of the wire 4 in the process of being pulled out, but has strong resistance in the floating direction (vertical direction) of the wire 4, or simply has its long side oriented vertically. Use a rectangular cross-section or an elliptical cross-section with the major axis in the vertical direction.

By using an elastic contact member that exhibits strong resistance in the direction in which the wire 4 floats, the wire 4 can be pulled out smoothly and the wire 4 can be reliably prevented from floating. Furthermore, in the above embodiment, the wire holding jig 6
, 7, a plate-shaped weight plate 6a,
7a is used, but it does not have to be plate-like and may be cylindrical.

As is clear from the above description, in the drawing method of the present invention, a ring-shaped weight is placed on the coiled wire l of the pack container 1 so that the distance between it and the outer cylinder 1b of the pack container 1 is 180 cm or less. Wire holding jigs 6 and 7 configured by attaching elastic contact bodies 6b and 7b that make elastic contact at at least two points.
and the wire holding jigs 6, 7 and the outer cylinder 1b.
Since the wire 4 is pulled out from between the wire 4 and the wire 4, the wire 4 does not get kinked and can be pulled out smoothly, so the wire holding jigs 6 and 7 float up and the wire 4 does not become entangled between them. Therefore, the weld bead can be drawn out satisfactorily without impairing its linear performance.

In addition, the pack container 1 generally has poor dimensional accuracy due to deformation due to gluing during manufacturing, drying process, or handling during wire transport, but if the drawing method of the present invention is used, such variations in method accuracy can be eliminated. Since the elastic contact bodies 6b and 7b absorb it, there is no adverse effect when drawing out.

Note that the wire holding jigs 6 and 7 gradually descend as the wire 4 is pulled out, but sufficient weight is required to allow them to fall naturally in this way, and the lower limit of this weight is determined by the elastic contact member. It is determined by the degree of frictional resistance between 6b, 7b and the outer cylinder 1b of the pack container 1.

As described above, according to the present invention, it is an extremely excellent drawing method that can perform good drawing without deteriorating the linear performance of the weld bead and without causing failure or failure in drawing.

[Brief explanation of the drawing]

1 and 2 are sectional views showing a conventional welding wire drawing method, respectively, and FIGS. 3 and 4 are a sectional view and a top view showing a welding wire drawing method according to the present invention, respectively. 1...Pack container, 1a...Inner cylinder, 1
b...Outer cylinder, 4, 4/-...Wire, 6
, 7...Wire {upper jig, 6a, 7a...
...Weight plate, 6b, 7b...Elastic contact body.

Claims (1)

[Claims] 1 Welding wire that is wound into a coil with a certain twist enclosed between the inner and outer cylinders of a container with a double cylindrical structure of an inner cylinder and an outer cylinder is pulled out from the container. In the drawing method, the welding wire is brought into elastic contact with a ring-shaped weight on the coiled welding wire in the container at at least two points having an interval of 180 degrees or less from the outer cylinder of the container. A wire holding jig is mounted, which is constructed by installing an elastic contact body having a large resistance force in the floating direction of the welding wire, and which descends as the welding wire decreases due to its own weight. A method for drawing out a welding wire, comprising drawing out the welding wire from between the container and the outer cylinder of the container.