JPH01286209A - Manufacture of flat cable - Google Patents

Abstract

PURPOSE:To easily manufacture a flat cable by applying a ceramic coat on the surface of a groove roll used for the preheating device and molding device of an insulated wire core. CONSTITUTION:The surface of a groove roll used for the preheating device and molding device of a flat cable manufacturing device is ceramic-coated. The sticking of a molten insulating material to the groove roll can be reduced. The brushing frequency can be sharply reduced, a flat cable can be easily manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a flat cable.

Conventional technology] Conventionally, the surface treatment of grooved rolls used in flat cable preheating devices and forming devices is based on Teflon coating, and molten insulating material (PV
C) adhered frequently, and the removal work (brushing) was not complete.

[Problem to be solved by the invention] The surface treatment (Teflon coating) of the above-mentioned prior art is as follows:
The frequency of adhesion of molten insulating material (PVC) to the grooved roll surface is severe. The frequency of this adhesion varies depending on the degree of brushing to remove the adhering material, but during normal work (day and night work) brushing is required 5 to 6 times a day, and the removal work is also 5 to 10 times. In addition to requiring time (minutes/times), there were drawbacks such as the product being discarded during the process.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a method for manufacturing a flat cable that makes it possible to easily manufacture a flat cable.

Means for Solving Problem C] The above object is achieved by applying a ceramic coat to the surface of a grooved roll used in an apparatus for preheating an insulated wire core and an apparatus for forming it.

[Function] Ceramic coating has been applied to the surface of the grooved rolls used in devices for preheating and forming insulated wire cores, making it possible to reduce the adhesion of molten insulating material (PVC) to the grooved rolls. This makes it possible to significantly reduce the frequency of periodic brushing and facilitate the production of flat cables.

[Example] In this example, the surface of a grooved roll used in a preheating device and a molding device of a flat cable manufacturing device was coated with ceramic. By doing this, the molten insulating material (P
It is possible to provide a method for manufacturing a flat cable that can significantly reduce the adhesion of VC) to the grooved rolls, thereby making it possible to easily manufacture the flat cable.

The results of examining the effects of the above examples are the first
shown in the table.

As shown in Table 1, the brushing frequency of this embodiment is 1 to 2 times/week, which is significantly lower than the conventional example of 5 to 6 times/day. In addition, the grooved roll surface limit temperature listed in the same table is the temperature at which the insulating material (PVC) melts too much and starts to adhere to the grooved roll as soon as it comes into contact with the grooved roll. expensive. This is due to the fact that in this embodiment, the amount of molten insulating material (PVC) on the groove roll is better than in the conventional example.
) is difficult to adhere to.

In this way, according to this example, it not only significantly reduces the periodic brushing opening, but also greatly contributes to its economic efficiency (about half) and the reduction of defective products, and has great industrial value. .

[Effects of the Invention] As described above, the present invention applies a ceramic coat to the surface of the grooved roll used in the device for preheating the insulated wire core and the device for forming the insulated wire core, thereby preventing the adhesion of molten insulating material (PVC) to the grooved roll. As a result, it is possible to significantly reduce the frequency of brushing, and it is possible to obtain a method for manufacturing a flat cable that makes it possible to easily manufacture a flat cable.

Claims (1)

[Claims] 1. In a method for manufacturing a flat cable in which a plurality of insulated wire cores are arranged in parallel and adjacent wire cores are heat-sealed, a ceramic coat is applied to the surface of a grooved roll used in a device for preheating the insulated wire cores and a device for forming the insulated wire cores. A method for manufacturing a flat cable characterized by: