Method for preparing cable insulating layer and extruder

Abstract

The invention discloses a method for preparing a cable insulating layer and an extruder. According to the method for preparing the cable insulating layer provided by the invention, an uncolored cableinsulation material and color master batches are separately added to an extruder for extrusion to prepare the cable insulating layer, so that a series of problems encountered in the prior art in whichcolorized cable insulation materials are directly prepared are avoided, for example, a weighing step of colorized raw materials and a pollution problem of the raw materials to a workshop are avoided;when raw materials of the cable insulation material with different colors are replaced during the process of preparing the colorized cable insulation materials, the problems that mixed-color materials are produced when a double-screw extrusion granulator is switched on and switched off and a very long time is needed for cleaning the double-screw extrusion granulator are avoided, and the problem of storage of the prepared colorized cable insulating material is avoided. The production and application cost of the uncolored cable insulation material is low, the product quality is high, the production energy consumption and the storage management cost are reduced, waste and environmental pollution are reduced, the production efficiency is improved, and the cost of preparing the cable insulating layer is reduced.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a method and an extruder for preparing a cable insulating layer. Background technique [0002] At present, cable material production enterprises produce cable insulation materials, such as: polyvinyl chloride (PVC) insulation materials, which are processed separately according to formulas of red, yellow, blue, green and other colors to produce different colored polyvinyl chloride (PVC) insulation materials. material. Cable insulation material manufacturers provide various colored polyvinyl chloride insulation materials to customers who demand them. Customers are usually cable manufacturers, and they replace polyvinyl chloride materials of different colors on the extruder according to the color requirements of the insulated cores produced. Vinyl chloride insulation material, extruded to produce various colored insulated wire cores. [0003] In the prior art, the follo...

AI Technical Summary

Problems solved by technology

[0006] 1) During the production of cable insulation materials of different colors, every time the raw materials of cable insulation materials of different colors are replaced, the start-stop twin-screw extruder will produce about 500 kg of color materials, of which the color materials are different colors The mixture of raw materials for cable insulation materials, if the color is changed without stopping the machine, the waste will be even greater

[0007] 2) Due to the need to produce insulating materials of different colors, it takes a long time to clean the twin-screw granulator for each color change, and the production efficiency is low

[0008] 3) The flower and color material produced by color change can be partially recycled, but it must be added for recycling back pressure treatment when producing black sheath material. On the one hand, the performance of the black sheath material cannot be guaranteed, and on the other hand, it will cause black sheath material. Production quality problems of nesting materials

[0009] 4) Due to color-changing start-stop and recovery back pressure treatment, the production energy consumption of the workshop increases accordingly

[0010] 5) For the storage and storage of various colored insulating materials for finished cables, due to the need to store various colored insulating materials, the inventory is large, occupying a large inventory area, and the time, management pressure and cost of warehouse management increase

[0011] In the prior art, when extruding polyvinyl chloride insulated wire cores of different colors on the extruder, it is necessary to replace the insulating material with different colors, especially when the production batch is small, the color change is more frequent, and there are the following during the color change process Problem: The extruder includes a hopper for adding colored cable insulation. Since each color change needs to reverse the colored cable insulation in the hopper of the extruder, it takes a long time to switch Production time, and not easy to clean up, reducing production efficiency

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