JPS5927716A - Winding method of wire for welding - Google Patents

Abstract

PURPOSE:To improve an operability at the time of wire winding and doffing, and to prevent a spring back, by winding in sequence a welding wire around a winding core while providing to the wire a habit of curling of a casting diameter smaller than a winding diameter of wire. CONSTITUTION:A wire W wound around a bobbin 1 is wound in sequence by a winding core 5, after passing through a group 2 of feeding rolls and guide rolls 3 and successively provided with a prescribed habit of curling by a group 4 of curling property forming rolls. The group 4 consists of 3 rolls 4a-c, and a casting diameter is adjusted by setting the roll 4c movably around the roll 4b, set as a center; the casting diameter is made a little smaller than the outer peripheral radius (r) of the core 5 at the beginning of winding, and is made a little smaller than the outer peripheral radius of a wind layer formed by the preceding wire, in sequence. Thus the winding of the wire W to the core 5 is automatically performed without causing a spring back.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for winding welding wire. It is easy to pass the tip of the wire through the wire guide device of the device, and it also prevents the occurrence of spring-back in the wound wire during welding or during interruptions, causing wire loops to become entangled with each other. This is an improved method of winding welding wire to take advantage of advantages such as:

Welding wire used for automatic or semi-automatic welding is generally provided as spool-wound wire or coil-wound wire, but when winding it, it is better to wind it with a larger cast diameter for better winding performance. Normally, when adjusting the winding diameter, it is necessary to first bend the tip of the wire and hang it on the core, and when winding is finished, in the case of spool-wound wire, it is necessary to bend the tip of the wire and hang it on the core. The end is bent and fixed by fixing the flange part [9] of the spool, while the coil-wound wire is fixed by folding the H part of the coil. When using the wire, release the end stop or binding, take out the light end of the wire, and introduce it into the guide part of the welding device.In the case of spool-wound wire, cut the bent part or separate the 6rb.
There is a problem in that it is necessary to straighten the parts, and springback occurs when the binding is released, regardless of whether it is spool-wound or coil-wound. Among these, springback in particular causes various problems as shown below.

■It is dangerous because the tip of the wire will come out.

■The loop on the outer periphery expands and protrudes from the wire reel spool flange of the welding machine, so subsequent processing is troublesome.

■Wire loops may intertwine and become entangled, making it impossible to feed out.

■When welding is stopped midway or when changing wires, the wires that have been re-tied must be re-sealed.

(2) When using a new spool-wound wire, the bent winding start end and the unwinding wire must be removed, which is cumbersome to operate and reduces yield.

Moreover, in the winding shear, O) the tip of the wire must be bent and hooked onto the winding core, making the operation complicated; ■ The wire is wound against springback force, so the winding Problems have also been pointed out, such as the need for a large amount of power to do this, and the need for end-stopping and binding at the end of winding to prevent springback.

The present inventors have taken the above-mentioned IW as a shield and devised a method for winding welding wire to achieve the above-mentioned (5)
Research has been carried out in order to solve all of the problems related to workability during winding, workability when changing the level wire, and (6) problems caused by springback.The present invention was completed as a result of such research, and the J'+'+y formation is a bending pattern with a cast diameter that is smaller than the diameter of the winding when winding the bath welding wire around the winding core. The gist lies in sequentially winding the wire while giving the same amount of force to the wire.

The structure and effects of the present invention will be explained below based on the drawings showing the embodiments. However, the following are representative examples and do not limit the present invention, but are compatible with the spirit of the above and below. It is within the scope of the present invention to appropriately change the structure and arrangement of the bending rolls, the wire feeding/winding mechanism, etc. to the extent possible.

FIG. 1 is a schematic explanatory diagram showing an embodiment of the present invention. The wire W wound around the bobbin 1 is a feeding roll! 1'P2
After passing through the guide rolls 8, a predetermined bending groove is given by the bending and groove forming roll group 4, and the winding is sequentially wound around the winding core 5. During winding, for example, as schematically shown in FIG. A bending pattern is given to the wire W so that a cast diameter that is slightly smaller than the outer circumferential radius I of the winding core 6 is formed.

As shown in FIG. 8, the cast diameter here refers to the radius Rfi:ff of the loop formed by the wire W naturally bending when the wire W is released as it is after passing through the bend forming roll 4. Therefore, if the wire is bent so that the cast diameter R is smaller than the outer diameter r of the winding core, the wire W
The winding force when forming its own loop causes it to become entangled in a manner that hugs the outer periphery of the winding core 5.
It is no longer necessary to bend the tip of the wire W to form the winding core 5, which was previously thought to be essential.

The start of winding can be done automatically and smoothly.After winding the first layer, the winding moves on to the second layer, so the degree of bending is slightly loosened. The second layer should be wound while forming a cast diameter that is at least smaller than the already wound outer diameter of the first layer.Then, as the number of wound layers increases, the cast diameter should be increased. However, at that time, the cast 14 should always be smaller than the outer diameter of the previous wound layer.In this case, the cast diameter of 1 to 1 is as shown in Fig. 4, for example. This can be easily done by the method shown in FIG.
The gear strut diameter R given to
It depends on the contact length with the outer peripheral surface of the blood roll 4b, and as the contact length increases, the degree of bending increases (and the cast diameter R becomes smaller (Fig. 4 K, ('j thread: i)). , On the other hand, as the contact length becomes shorter, the degree of bending becomes smaller and a large stitch is formed for a cast diameter of 1 (solid line in Fig. 4).Therefore, as the number of winding layers increases, ) roll Iff in 41), h in Ij
'rQ, or roll 11
``If the contact length is shortened by bringing the entire winding core 5 closer to the winding core 5 side, the optimum cast diameter R corresponding to the winding layer diameter can be easily given. If a bending pattern with a small cast diameter is given to each winding layer over the entire length of the wire, each winding layer's wire will be shaped like N'+n bent by its own bending pattern. Since it is stabilized, there is no fear that the wire loop on the surface layer will cause springback even if it is left with the cane fm of it.The casting diameter given to the wire W is set to It is best to give a cast diameter in the range of 0.6 r' to 1.(lr') with respect to the outer radius r' of the layer 01. The larger the difference, the greater the hugging force of each wire loose, which increases the stability of the wound layer, but if the cast diameter is too small, correction immediately before use (correction immediately before feeding to the energized tip) will be complicated. It tends to become unstable, so from the original purpose of preventing springback, it is 0.Or'~
1. It is sufficient to provide a difference of about Or'.

No. 5.11 is a sketch showing a spool-wound wire and a coil-wound wire wound by the method of the present invention, the former being mainly applied to wires with a small diameter, and the latter being applied to wires with a small diameter. Mainly applied to large diameter wires (submerged arc welding wires, etc.). In any case, all wire loops hug some meter or winding core on the inside due to their own bending (9JS6
In the case shown in the figure, the innermost layer does not have anything to tighten it, but it tries to reduce its diameter on its own), so the shape of the rolled part can be kept stable just by supporting the inner peripheral surface and both sides. This eliminates the need for support on the outer peripheral surface. Especially for coil-wound wire,
As shown in Fig. 6, the shape can be maintained only with the U-shaped binding wire 6 that supports the inner peripheral surface and both sides of the coil, and there is no need to tie or tighten the wires. This greatly simplifies the binding work, and also eliminates the work of releasing the binding part during use.

In addition, with the winding method of the present invention, the wrapping force at the beginning of the winding is used to unwind the winding from the winding core, but the tip is not bent, and the end of the winding is not latched. Since the wire 32 is not needed and is not bent, it is not necessary to cut off the feeding start end (winding end) and the winding end (winding start end) when replacing the wire 32. Moreover, since the wire is trying to reduce its diameter through bending in each winding layer, it is necessary to cut the wire in the middle of the winding layer, not only at the end of the winding, but also at the end of the winding. Even if a line occurs, there is no risk of the wire loop springback.

161 It is necessary to install a bend forming roll 4! There is no particular restriction on the amount, but if the bending roll 4 is provided in a position close to the winding core 5 on the opposite side from the wire supply side (top left in the figure), as shown in Fig. 1.2, A force in the direction of arrow (A) is applied to the winding wire W due to the bending of the wire loop, so that a winding (=j) is formed that reduces the driving force.

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

■The winding starts using the hugging force created by the bending of the end of the winding, and is wrapped in a tangled manner, so the work of latching the tip can be omitted, and the work of starting the winding is simplified. Automation becomes easier. In addition, there is no need to bend the starting @ part, and there is no need to latch or bend the end part of the winding. This improves workability.

(2) Since the front 11d of each layer of the wound wire is tightened by bending, there is no risk of springback even if the wire is cut at the end or in the middle of the wound layer. Therefore, the phenomenon of wire loops coming loose due to springback and entanglement between loops is eliminated, and there is no need for retying.

■Since there is no need to bend and hang the end of the winding, the operation at the end of winding is also simplified. There is no need to remove the latching part even when used for a short period of time, and the start end of the feed (end of winding υ) can be removed from the outermost It1 winding layer and inserted into the mouth of the welding equipment. Just insert it into the through part, welding standard 4
IO work also becomes easier.

■Since the bending of the wire can be used as the driving force for winding the winding core, the power cost required for winding is also reduced.

[Brief explanation of the drawing]

Figure 1 is approximately 111h old 1 illustrating the winding method of the present invention.
Figure 2 is an explanatory diagram of the main parts of the winding section, Figure 8 is a diagram to explain the meaning of the cast diameter, Figure 4 is an explanatory diagram illustrating the method of adjusting the cast diameter, FIG. 6 is a perspective view illustrating the spool-wound wire and coil-wound wire obtained by the present invention. 1... Wire reel W... Wire 2... Feed h
Row n' 8...Guide roll 4...Bending gear 1 roll

Claims (1)

[Claims] f11 A method for winding welding wire, which comprises sequentially winding welding wire around a winding core while giving the wire a bend with a cast diameter smaller than the winding diameter.