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HOME > Product Information > Cable production device > Flat-Square Wire Covering line

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Flat-Square Wire Covering line

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Now that CO2 reduction is required as a measure to prevent global warming, the shift to motor-driven vehicles such as hybrid vehicles and electric vehicles is rapidly accelerating for most of the automobiles.

The flat-square wire used for motor coils is covered with an insulating layer which many companies are overwhelming for the development of electrical resistance, heat resistance, strength and so forth to make products developed. It is an industry where great demand is expected in the future.


Mitsuba Manufacturing's flat-square wire coating line is provided with a line system equipped and devised with the purpose of being able to cover micron-order coatings without cutting the resin, mainly by means of our extruders compatible with super engineering plastics such as PPS resin and PEEK resin.

Features

1.Extruder

In order to extrude resin with a coating thickness of 100μm or less with high discharge accuracy, we have a lineup of small diameter extruders with a screw diameter of φ14 mm. Depending on the cylinder heating temperature and extrusion torque, we will respond by individual design with the material of the screw and cylinder according to the characteristics of the resin used.

2.Crosshead

Since the crosshead covers the entire circumference of the flat-square wire with a uniform thickness, the flow path is designed based on the viscosity data of the resin.

3.Preheating Device (Preheater)

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It is no exaggeration to say that a preheating device that heats a flat-square conductor before coating is an essential item for this line in order to perform thin coating without running out of resin.

Although it depends on the conductor size, we can shorten the line length and increase the line speed by adopting an induction heating type preheater (Click here for details) that heats the conductor by electric resistance developed in-house.



4. Countermeasures Against Twisting and Bending

In order to pass a chewy flat-square conductor without getting caught in the crosshead, Mitsuba devises a straightening machine that removes the bending habit in the feeding line drum as well as ancillary equipment such as adopting a drum traverse type supply stand to pass it straight.

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Drum Traverse Supply Stand

The drum is traversed so that the flat-square conductor can pass straight through the crosshead without twisting or twisting from the feeding line drum.







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Orthodontic Machine

It is a device that corrects the winding habit in the feeding drum.











We recommend a zigzag type accumulator and a drum traverse type winder as well as a staggered type accumulator and a supply in order to wind the flat-square wire neatly on the drum without twisting or twisting even after coating.

By adding an accumulator, it supports continuous operation as a production machine.


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Staggered Vertical Accumulator

The moving pulleys arranged horizontally are moved up and down to store the wires without twisting the cables.







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Drum Traverse Type Automatic Winder

It is an automatic winding machine that replaces the drum without the intervention of an operator.

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