Matters needing attention in the production process of the wire drawing machine
1. The manipulation of the diameter error of the commodity
Because of the uninterrupted production and manufacture of copper core wire metal wire drawing machines and equipment, the speed of metal wire drawing will gradually differ from that of quenching, which will cause the cable diameter to be interrupted due to the speed of the traction belt during metal wire drawing. , irregular changes. The reasons for this situation are as follows:
1. The support force on the wire storage wheel is unstable. There are likely to be many areas where standard air pressure is applied to the production line, which will cause the standard air pressure of the air pump of the wire drawing machine to be high and low, which also makes the support force of the wire accumulator unstable, and because the speed of the winding wire is not This makes the tensile force on the metal wire non-constant, which can cause the wire drawing diameter error to be uncontrollable.
2. The shaking of the copper core wire on the annealing wheel. This promotes the quenching of the copper core wire when it is loose and tight, and the current intensity of quenching is sometimes large and small, while the compressive strength of the copper core wire under higher speed operation is relatively low, so it is very easy to cause the copper core wire. Ignition on the annealing wheel, so that the surface layer of the copper core wire is uneven in diameter due to the effect of the flame.
3. Damage caused by the long-term application of the main motor reducer. This can make the speed of the constant speed pulley of the metal wire drawing and the speed of the pulling belt do not match with the speed of the closing angle, thereby resulting in the thinning of the wire drawing.
Solution: Lubricate the wire accumulator very well to prevent it from single-handedly running at high speed and cause friction in the opposite direction to thin the wire; adjust the supporting force of the wire so that the stroke arrangement of the metal wire draws close to the end For the annealing wheel; ensure the integrity of the annealed wheel's rigid ring, and prevent the quenching current from being unstable due to the surface defect of the rigid ring. According to the specific conditions of the wire drawing machine, the mold matching is carried out again: according to the basic principle of metal wire drawing, it is adjusted so that the speed ratio of the annealing wheel / the speed ratio of the constant speed wheel = the forward slip index × the diameter of the constant speed wheel / the diameter of the annealing wheel, in which the The diameters of the speed wheel and the annealing wheel are already known, and the speed ratio of the constant speed wheel and the annealing wheel can also be measured, so that the forward slip index can be obtained. Model shells can meet the requirements.
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