.Simple and not enough attention, with the increase of enameled wire line speed, labor productivity. The growth of the pay-off part has also attracted people’s attention, in a normal operation
On the enameling machine, most of the operator’s energy and physical strength is consumed in the line part
On the other hand, replacing the pay-off (conductor) spool makes the operator pay a lot of labor.
Operation failure is prone to occur when the reel joint is exchanged. It is necessary to reduce labor intensity and reduce
There are few operating failures, and the most effective method is large-capacity release, currently advanced
enameled wire) The maximum pay-off weight of the thick wire in the factory can reach 2 tons, and the thin wire of 0.05mm
Up to 50g, a coil of wire can be used for a week, which reduces the labor intensity.
It also reduces the failure caused by the exchange of the pay-off reel connector, the capacity of the wire reel
When it is too big, it is not suitable to use the moving plate to pay off the wire, and the wire bears
Unable to bear the tension of the world, the static disc pay-off (over-end pay-off) is suitable for large-capacity lines
plate.
The key to paying off the wire is to control the tension. When the tension is large, the wire will not be stretched thinly and
The surface of the wire loses its gloss, and it also affects many properties of the enameled wire.
The wire of the wire has a certain range of requirements, and the tension of the wire will cause the diameter of the wire to be thin.
In case of unqualified products, sometimes although the thinned wire diameter is still within the required range,
It still has some influence on the quality of the product. From the appearance, it is thinned and thinned.
The wire that is coated with enameled wire has poor gloss, which affects the appearance quality;
In terms of performance, the elongation of thin enameled wire, rebound flexibility, thermal shock
are affected to some extent, and even unqualified, the pay-off tension greatly makes the wire thinner,
It is very similar to the wire drawing phenomenon, which changes due to the change of the lattice arrangement of the metal molecules.
It is hard, so it affects the elongation and resilience of the enameled wire, and the pay-off tension greatly reduces the elongation of the enameled wire
The covered wire is stretched during the coating process, and the paint film also bears some elasticity.
In addition to the spring force experienced by the winding, flexibility and thermal shock tend to be reduced.
If the pay-off tension is too small, the line will jump easily, which will cause parallel lines, the line touches the furnace mouth,
The most feared thing when paying off is that the tension of the semicircle is large and the tension of the semicircle is small, so that the unfair wire will
Looseness, tying off, and being thinned section by section, it will also cause damage to the inner line of the oven.
Large jump, causing parallel and line touch failures. Therefore, the tension of the pay-off must be uniform,
Appropriate, neither tight nor loose, controlled within the appropriate range.
The control of the pay-off tension is generally only adjusted according to the operating experience.
There is a fixed value, but there is also a lack of measuring instruments, even if a tension is to be set
The value must be determined according to the specific situation of the enameling machine structure.
The chartered machine has a booster wheel (wire feeder), some enamelled machines do not have a booster wheel, and some help
Before the force wheel is installed in the annealing furnace, there is nothing wrong with this structure if the tension is larger.
Influence, of course, depends on the size of the booster wheel and the contact arc between the wheel surface and the wire
Wait, some booster pulleys after the annealing furnace, the pay-off tension is large, and the wire will be withdrawn.
When the fire is thinned, the tension requirements for the tension of the wheelset are more stringent without assistance. According to
The measured maximum non-extension tension of soft copper wire at room temperature is about
15kgmm2; its maximum non-extension tension is about 4 at 4000C temperature
kg/mm2: its maximum non-extension tension is about 2 at 5000C temperature
kg/mm2, in the normal enameled wire coating process, the tension of the enameled wire should be obvious
is less than the non-extension tension, and it is required to be controlled at about 50% of the non-extension tension.
The wire is the first component of the coated enameled wire, its tension is very important for annealing and paint baking
The influence of baking is great, so that the tension of the enameled wire will gradually increase, so the tension of the wire will be increased gradually.
The force is smaller, about 20% of the tension without extension.