A steam conveying hose and its special forming tooling

Abstract

The invention relates to a steam conveying hose, and belongs to the technical field of hoses. The hose comprises a hose body made of rubber and plastic materials, the outer surface of the hose body is wrapped by a braided layer, the appearance of the cross section of the hose body is round, the surface of the inner circle of the hose body is provided with at least one radial protruding part which extends in the axial direction, a through hole is formed in the middle of the radial protruding part and a wire with an insulating layer is inserted in the through hole. The flexibility of the hose is obviously improved, and the hose can be bent freely and cannot be folded shriveled; the wire cannot be pulled or dragged when the hose is bent, so that even if the hose is bent repeatedly, the hose cannot be damaged; even if an insulating protective sleeve is not used for the wire arranged in the through hole, double insulation is formed by means of the outer wall of the through hole and the insulating layer of the wire itself, and good insulating performance can be guaranteed; meanwhile, due to the fact that air in the space between the wire and the through hole flows, the heat resistant effect is improved. In addition, due to the fact that the cross section of the hose body is round overall, after the hose body is wrapped by the braided layer, the appearance is neat and attractive and the hose body can be held conveniently.

Description

technical field [0001] The invention relates to a gas conveying hose, in particular to a steam conveying hose with a wire, and also relates to a special forming tool thereof, which belongs to the technical field of hoses. Background technique [0002] As far as the applicant knows, the existing steam delivery hoses used in steam irons and the like often need to transmit current or electrical signals at the same time, so its typical structure is as follows: figure 1 and figure 2 As shown, it mainly includes a hose body 1 with a circular section and a wire 2 attached to the outside of the hose body. The wire 2 is generally composed of at least one conductor core 2-1, at least one insulating layer 2-2 covering the conductor core, and an insulating protective sleeve 2-3 covering the insulating layer. In order to make the hose main body 1 and the wire 2 form an integral body, the outermost layer of the steam delivery hose is wrapped with a braided layer (not shown in the figur...

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Problems solved by technology

[0003] Practice has shown that in the process of use, the above-mentioned prior art has the following problems: 1) Since the wire does not have stretchability, the flexibility of the hose is poor when it is bent, and the wire is easy to break after repeated bending; The main body is easy to collapse, resulting in poor airflow. 3) The cross section of the hose wrapped by the braid layer cannot form a complete circular arc matching the roundness of the hose main body at the place where the wire is attached, so the shape is not round and the hand feeling is poor when holding

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