JPH0643098Y2 - Spool for welding wire - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention facilitates alignment winding work when the welding wire (hereinafter referred to as wire) is automatically or semi-automatically aligned and rewound. The present invention relates to a welding wire spool officially used for rewinding a 20 kg wire, which can reduce the turbulence rate.

<Prior Art> Manufacture of a wire is roughly divided into steps as shown in FIG. In recent years, the efficiency and labor saving of the manufacturing process have been studied, and the batch type processes have become continuous. In particular, up to the plating process in the first half, a highly efficient line that completes the plating process in one line is being studied, as represented by the loop method.

In the latter half of the secondary wire drawing and rewinding process, the wire after plating is transferred, the die is changed, and the bobbin is transferred.
It requires a lot of rewinding and manpower. In particular, the rewinding work begins with the removal of the bobbin and spool, and the spatula is used so that the wire winds up in a uniform manner, and the wire is pressed against the spool, which is usually done while taking care of it. there were.

For this reason, one or two rewinding machines are monitored per rewinder. Therefore, it has been pointed out that the labor productivity of rewinding work is significantly worse than other processes. Therefore, since it is easy to apply the automatic winding method in order to measure the efficiency of the rewinding work, the spool 1 as shown in FIG.
Instead of aligning the wires 4 around the wire, a rewinding method by twisting the wires 4 as shown in FIG.
60-199566), however, there are problems such as small bending and entanglement of the wire 4 in the Aya winding, and the current situation is that the user still prefers the aligned winding.

With such a background, automatic or semi-automatic rewinding machines that perform aligned winding have rapidly developed and have already entered the implementation stage.

<Problems to be solved by the invention> Here, the problem in performing aligned winding is that the winding is done automatically or semi-automatically, so there is no care of the operator as in the past That is, the phenomenon of so-called winding disorder in which the wire rows are disordered is likely to occur. When this phenomenon occurs, the work that is either automatically rewound or manually rewound, or it is removed outside the machine and scrapped is done, and the merit of automatic winding is Will be reduced.

An object of the present invention is to provide a spool for a welding wire capable of reducing the problem of such automatic or semi-automatic rewinding, that is, the winding disorder phenomenon in aligned winding.

In order to achieve the above object, the present inventor paid attention to the rewinding process that had significantly reduced labor productivity in order to improve the efficiency of the rewinding process, and examined a rewinding technique by automation or semi-automation, Attempts were made to reduce the winding disorder rate, which is one of the problems.

As a result, with regard to the mechanical improvement, we tried to improve the follow-up performance by using a servomotor for the traverse part and improve the alignment rewinding technology, but the winding disorder rate is still 3 ~.
It was as high as 5%, and the initial target could not be cleared.

Therefore, I paid attention to the spool on the rewind side. That is, when the winding disorder occurrence situation was investigated in detail, the occurrence rate at the beginning of winding between 0 and 10 kg was 80%, and the remaining 20% was 10 kg or more in most cases. From the overall rate of occurrence, it was found that about 3% occurred at the beginning of winding and about 0.5% occurred at places other than the beginning of winding.

Further investigation of the winding disorder at the beginning of winding revealed that the spool with the winding disorder had flange fluctuations when mounted on a machine, and the winding state was also orderly, but when the entire circumference was observed, there was a wire and a flange. It was found that the intervals were uneven.

This phenomenon can be explained as follows. That is, as shown in FIG. 7, the wires 4 are regularly wound around the body 3 in a bale-like manner, but the amount of sagging of the flange 2 is different in the circumferential direction as shown by W1 and W2. If so, the way in which the wire 4 extends from the third winding stage of the wire 4 changes in the circumferential direction, and a gap is partially generated between the flange 2 and the wire 4, and the gap becomes larger as the number of stages is increased. It will lead to disorder.

When the rewinder is on, the gap is cleaned up with a spatula and the like, so such a winding disorder has not occurred, but the automatic type or the semi-automatic type has a high probability of reaching the disorder.

In addition, the automatic rewinding machine here is a device that automatically carries out the installation and removal of the spool on the machine, the wire start end processing, the termination processing, and the rewinding, and the semi-automatic rewinding machine does some kind of start end processing and termination processing. The degree and the like are performed manually and almost automatically, and there is a possibility that one person can operate three or more units.

As mentioned above, we found that the bending of the flanges provided on both sides of the spool is an important point of wire winding disorder, and after various studies, we achieved the present invention. According to the present invention, as shown in FIG. 1, a 20 kg welding wire spool 1 used for automatically or semi-automatically aligning and rewinding a welding wire 4 having a wire diameter of 0.6 to 2.0 mm is provided on both sides of the spool 1. It is characterized in that the provided flange 2 has a bent shape in which the amount W of inward bending of the outer edge 2a of the flange 2 satisfies both the following conditions (1) and (2). is there.
Reference numeral 3 is a body of the spool 1.

0 ≤ W ≤ d (mm) ………… (1) Wmax-Wmin ≤ d / 2 (mm) ………… (2) d: Wire diameter (mmφ) Wmax: Maximum amount of dripping, Wmin: Tray Minimum amount of waste.

Here, the reason for setting the above conditions will be described.

(1) First, the reason for setting the relationship of the amount of inward deflection (W) of the outer edge of the flange to 0 ≦ W ≦ d (mm), (d: rewound wire diameter) will be described. The spool usually has a long flange portion, and when the wire is wound in multiple layers, the upper layer portion has a wedge effect and the force applied to the flange becomes considerably large. In order to counter this force, a flange layer is attached or the outer surface of the flange is provided with radial peaks called ribs for reinforcement.

In this way, even if measures are taken, the flange is
The outer edge expands by 3 to 4 mm as a whole. That is, for example, 8
The width of the inner edge of the outer edge of 8 mm will expand to about 91 mm. When W is set to be less than 0, that is, in a state where it is spread outward, further spread occurs after rewinding, and a phenomenon called step-down occurs in which the well-wound wire is difficult to be inserted inside. Further, a large force is applied to the base of the flange, which causes the spool to crack.

When W is equal to or larger than the winding wire diameter d, when the wire is rewound as shown in FIG. 8, the wire 4 hits the outer edge 2a of the flange 2 even if the traverser 5 comes into contact with the wire, and one winding of the wire 4 occurs. Minutes ie
It becomes impossible to rewind the wire 4 closest to the flange portion on the side where the amount of sagging W exceeds the wire diameter d, and there is no one turn around the end, which causes eye catching.

Fig. 2 is a graph showing the results of investigation of the amount of deflection (W) at the outer edge of the flange and the wire winding disorder occurrence rate. It can be seen that the amount is in the range of 0 ≦ W ≦ d.

(2) Next, the reason why the relationship of the degree of variation in the amount of bowing W inside the flange tip is set to Wmax-Wmin ≦ d / 2 (mm) will be described. W ≤ W in the circumferential direction on both sides of the flange
If it changes in <d, the wire diameter may have a clearance. FIG. 3 shows the result of the experiment paying attention to this point.

That is, as shown in FIG. 3, the winding disorder occurrence rate increases at d / 2. This is because if there is a gap of d / 2 or more in the circumferential direction, the arrangement of wires changes as described above, and skipping occurs and winding disorder occurs in the 10th to 11th layers.

<Example> An example of the present invention will be described below.

The relationship between the winding wire diameter and the spool size was investigated for the winding disorder occurrence rate due to the amount of bowing inside the flange tip. The rewinding conditions are welding wire YGW11: 1.2φ, 2.0φ, YGW12: 0.
Using 8φ, 1000 pieces of each test were rewound and evaluated with a fully automatic rewinder for 20 kg winding.

The results are shown in Table 1. In addition, the winding disorder occurrence rate is calculated by the following calculation formula.

Winding disorder occurrence rate (%) = (number of winding disorder occurrences) / (number of rewinding) × 100 The target of winding disorder rate is 1%, and those exceeding this are rejected. Since the test Nos. 1, 2, 7, 8, 10, and 11 are within the condition range of the present invention, the winding disorder occurrence rate is 1% or less. On the other hand, in No. 3, since the variation in the amount of sagging W is d / 2 or more, the fluctuation of the flange is large and the occurrence rate is 1% or more. NO.4 and 9 have a variation of W within d / 2, but W
Since the value exceeds d, the wire comes into contact with the tip of the flange and winding disorder occurs. Since the indexes of NO.5, 6, and 12 are both outside the effective range, the winding turbulence occurrence rate is rapidly increasing.

<Effects of the Invention> As described above, according to the present invention, it is possible to automatically or semi-automatically perform the rewinding for 20 kg with a low winding disorder rate and efficiently perform work, and also improve the labor productivity. be able to.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a welding wire spool of the present invention, and FIG. 2 shows the relationship between the amount of inward deflection (W) of the outer edge of the flange and the wire winding disorder occurrence rate (%). Fig. 3 is a graph showing the relationship between the variation in the amount of weddle W and the wire winding disorder occurrence rate (%) with reference to the wire wire diameter. Fig. 4 is a flow diagram showing the wire manufacturing process. FIG. 7 is an explanatory view showing the aligned winding of the wires, FIG. 6 is an explanatory view showing the twisting of the wires, FIG. 7 is an explanatory view showing the relationship between the bending of the spool flange and the winding condition of the wire, and FIG. 8 is the spool. FIG. 7 is an explanatory view showing a wire winding situation in the case where the flange is excessively bent. 1 ... Spool, 2 ... Flange, 3 ... Body, 4 ... Wire, 5 ... Traverser.

Claims (1)

[Scope of utility model registration request] 1. A spool for a 20 kg welding wire used for automatically or semi-automatically rewinding a welding wire having a wire diameter of 0.6 to 2.0 mm, wherein flanges provided on both sides of the spool are attached to the outside of the flange. A spool for a welding wire, characterized in that the amount of wedging inward of the edge is W that has both of the following conditions (1) and (2). 0 ≤ W ≤ d (mm) ………… (1) Wmax-Wmin ≤ d / 2 (mm) ………… (2) d: Wire diameter (mmφ) Wmax: Maximum amount of dripping, Wmin: Tray Minimum amount of waste.