JPS5930628B2 - How to take out packed wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for taking out a pack wire from which a welding wire is wound into a coil and stored in a cylindrical container called a pack container, which consists of an outer cylinder and an inner cylinder.

Generally, wires called back-wound wires or bail-bane wires are made by stacking coiled wires and storing them in a cylindrical container. However, when these wires are taken out, wrinkles occur in the wires, and the wires accumulate over time. This often resulted in inconveniences.

Therefore, the inventors of the present invention have devised a method to solve this problem by giving the wire a reverse twist in advance and storing it in a cylindrical container, and winding and taking out the wire in such a way that a wire without twists can be obtained when the wire is taken out. We have developed a method and have already applied for a patent.

In addition, products based on this patent application and products with a similar concept, such as "E-rotation," which provides reverse wrinkles by one rotation or less per coil, have gradually been put into practical use. Ta.

However, even with these products, even a slight disturbance in the wire removal state often caused the wire coil stored in the bag to jump up, causing the wire to become entangled and making it impossible to remove the wire. Therefore, the inventors of the present invention have tried various methods to prevent accidents caused by the force of the back-wound wire that is twisted upwardly and becomes entangled.

Figure 1 shows the conventional method for taking out back-wound wire with reverse twists. , arrow A indicates the direction of reverse twisting, arrow B indicates the direction of twisting when taking out the wire, and arrow C indicates the direction of taking out the wire.

That is, conventionally, as shown in Fig. 1, the wire 1 is taken out perpendicularly to the coil surface without rotating the bag container 2, and the reverse twist is released once every time one coil is taken out, so that there is no twist at the time of taking out. However, the wire 1 that has been given a reverse twist and stored in the bag container 2 has a higher reverse twist force than the pack-wound wire that has not been given a reverse twist. Since the wire coil naturally has a tendency to float or spring up, if some disturbance on the take-out device side is transmitted to the back-wound wire that has been given this reverse twist, it will cause the wire coil to float up or jump up. ) It was observed that the stored wire coils were lifted up one after another, and as a result, the wire coils became entangled with each other, and eventually became impossible to take out.

In particular, in the case of back-wound wire for welding, the trouble of being unable to take out the wire due to such disturbances occurs due to rotation of the welding torch by the welding operator, movement of the wire take-out guide tube, eccentricity of the wire take-out roller, etc. Therefore, the inventors of the present invention conducted various experimental studies and were able to discover the relationship between the directionality of the back-wound wire with the reverse twist b in response to disturbance and the barrier that prevents this.

First, when we conducted an experiment by actively applying a rotational force as a disturbance to a wire that had been given a reverse twist, we found that the left-handed coiled wire that had been given a reverse twist was shown in Figure 2. When 1 is viewed from above and turned clockwise as shown by arrow D, the rotational force is immediately transmitted to the inside, and with a light force or rotations of V2 to V4, the wire coil will jump up as shown by the dotted line, but as shown by the arrow in Figure 3. When turned counterclockwise as shown by E, the wire coil spreads out as shown by arrow F and comes into close contact with the bag container 1, which creates frictional resistance and makes it difficult for the rotational force to be transmitted any further.

Even when this was rotated l-~2 times and the rotational force was transmitted to a strong S2 pull, the reverse twist only released the internal wire coil and did not cause it to spring up.

Similarly, when a clockwise or counterclockwise rotational force is applied to a right-handed coiled wire with a reverse twist, the rotational force is difficult to transmit to the inside in the clockwise direction, and no springing occurs, but in the counterclockwise direction, it easily bounces up. It was found that rotational force was transmitted to the inside, causing it to bounce up. From this, a back-wound wire with a reverse twist has a directionality in terms of resistance to rotational force caused by external disturbances; a left-handed coiled wire has a clockwise direction, a right-handed coiled wire has a counterclockwise direction, and a right-handed coiled wire has a directionality. In other words, it is sensitive to disturbances in the direction of increasing twist, and is insensitive to disturbances in the counterclockwise direction for left-handed coiled wires and clockwise for right-handed coiled wires, that is, in the direction of decreasing twist. I understand.

Therefore, as a barrier device to prevent these disturbances from entering, we investigated various methods of providing a straightening aperture 4, etc. at the tip of the wire take-out device, as shown in Figure 4. Although the barrier device can prevent rotational force disturbances from entering from the outside to a certain extent, on the other hand, once a disturbance enters the interior, it becomes difficult to release it to the outside, and it may be difficult to release it to the outside. The twist itself may even act as a barrier to release (using the concept of an electric circuit, just a resistance R is introduced), and the correction roller 4 itself may become a source of disturbance, which may hinder the purpose of the present invention. I couldn't be satisfied.

The present inventors have developed the present invention based on the results of these various studies, and in the present invention, the wire take-out guide tube used when taking out the wire has a spiral shape in the opposite direction to the winding direction of the wire, for example. In the case of a left-handed coiled wire 1 as shown in FIG. 5, it has been found that winding it in a right-handed spiral is very effective. In other words, when a right-handed helical wire extraction guide tube 5 is combined with a left-handed coiled wire 1, a clockwise disturbance rotational force when viewed from above, that is, the wire 1 jumps up, causing troubles such as entanglement. Against disturbances, the wire 1 comes into close contact with the inner wall of the wire extraction guide tube 5 and acts as a barrier to transmit the disturbance rotational force downward, and against rotational forces in the counterclockwise direction when viewed from above,
Since it can pass freely, the reverse twist inside is freely released to the outside and does not become a barrier.

For this reason, the wire take-out guide tube 5 acts as a barrier to intruders from the outside to the inside, but it becomes a one-way barrier that allows free release of the inside by reverse twisting. That is, when applied to the concept of an electric circuit, the result is the same as if diode D was inserted, as shown in FIG. This also applies to the combination of the left-handed helical wire extraction guide tube 5 with the right-handed coiled wire.

In addition, as shown in Fig. r, when a spiral wire extraction guide tube is used in the same direction as the wire coil, that is, in the case of a combination of a left-handed spiral wire extraction guide tube for a left-handed coiled wire, , this is the worst combination in which only the disturbance invades and the reverse twist D cannot be released.

As is clear from the above explanation, when taking out the back-wound wire that has been stored with a reverse twist, the disturbance rotational force in the direction of increasing the reverse twist is not passed through, but the rotational force in the direction of releasing the reverse twist is allowed to pass through. By taking it out through the sexual barrier device,
That is, by making the wire take-out guide tube 5 spiral in the direction opposite to the winding direction of the wire coil, it does not become a barrier to releasing the reverse twist, and it is possible to prevent harmful rotational force from entering from the outside. D. It is possible to completely eliminate the occurrence of troubles in which the wire 1 becomes entangled due to jump-up of the wire 1.

In addition, if we further examine the dimensions where a significant spiral effect appears, we find that the radius of helical curvature R is ↓D≦R≦2D with respect to the coil diameter D of the wire, and the number of helical turns is ± turns or more (
4f or more) is good. 8 Formula 1 This means that when the helical curvature is less than 1 of the coil diameter (less than 1 radius), the frictional resistance between the wire extraction 4SS guide tube 5 and the wire 1 when taking out the wire is This is because it becomes too large and difficult to remove.
Moreover, if the radius of the spiral is 1 or more than twice the coil diameter (4 or more times the radius), it becomes too loose as a barrier and is not effective in preventing disturbances from entering.

Further, the number of turns of this spiral must be at least one turn (4 f or more), and if it is less than this, it cannot function as a disturbance prevention barrier device. In addition, if there is more than one turn, 10S8
After that, it is effective as a disturbance prevention barrier device even if it is in a straight line or a normal curved line.

In addition, when actually forming the wire extraction guide tube 5 into an appropriate spiral shape, a hard tube that is difficult to deform may be used.
When using less flexible conduit (called flexible conduit) such as back-wound wire for welding,
It is also an effective method to install a guide ring 6 above the wire take-out device 3 as shown in FIG. As described above, by using the second method for taking out the back-wound wire of the present invention, the practicality of the back-wound wire in which the wire is stored after being given a reverse twist can be greatly improved as follows.

(1) Even when various disturbances invade the wire take-out side, such as with back-wound wire for welding, the jump of the wire is
The trouble of one wire getting entangled is completely eliminated, thereby making it possible to completely prevent welding defects due to the trouble of wire getting entangled during welding.

(2) Since the reverse twist can be freely released and a straight wire can be stably taken out, the usability of the wire can be improved.

In particular, with welding wire, there is no deviation in the welding target position.
A stable welding arc can be obtained, and the quality and reliability of the welded part can be improved. Brief Explanation of the Drawings Figure 1 is a schematic diagram showing the state in which the conventional method for taking out back-wound wire is being carried out, and Figures 2 to 4 were carried out at the stage of developing the present invention. FIG. 5 is a schematic view showing a state in which a method for taking out a back-wound wire according to an embodiment of the present invention is being carried out; FIG. The figure is a schematic diagram for explaining the effect on the wire when the same extraction method is used, and Figure R is a schematic diagram for explaining the effect on the wire when the extraction method of the present invention is not used. It is a diagram.

1...Wire, 2...Back container, 5
...Wire extraction guide tube.

Claims (1)

[Claims] 1. When taking out a pack-wound wire which is made by giving a reverse twist to the wire in advance and storing it in a cylindrical container, the wire is taken out through a wire take-out guide tube which is spirally wound in a direction opposite to the winding direction of the wire coil. How to take out pack-wound wire.