Base strip, extrusion hose composed of base strips and tool for producing extrusion hose

Abstract

The invention discloses a base strip which comprises a first vertical part, an arc-shaped part, a second vertical part, a first transverse part and a third vertical part which are sequentially connected into a whole. One end of the second vertical part is connected with the first vertical part through the arc-shaped part, the other end of the second vertical part is connected with the second vertical part through the first transverse part, the first vertical part, the arc-shaped part and the second vertical part form a first notch, an opening of the first notch is downward, the second vertical part, the first transverse part and the third vertical part form a second notch, and an opening of the second notch is upward; and the first transverse part is provided with an extending part, and the third vertical part is arranged between the first transverse part and the extending part. By means of the extending parts, when the multiple base strips are spirally wound and transversely connected to form an extrusion hose, first grooves in the inner wall of the hose can be blocked, and therefore it is guaranteed that the inner wall of the extrusion hose is smooth, and howling is reduced.

Description

technical field [0001] The invention belongs to the technical field of hoses, in particular to an extruded hose and its tooling. Background technique [0002] The extruded hose has a huge market prospect, and the stretchability of the extruded hose is the key to gaining an advantage in the market competition. In order to increase the stretchability of the extruded hose, the telescopic units that make up the extruded hose are usually set When the extruded hose is composed of multiple folded telescopic units, stretching the extruded hose is the fold of the stretched telescopic unit, and compressing the telescopic extruded hose is the fold of the compressed telescopic unit. In this way, the expansion and contraction ability of the extrusion hose is guaranteed, but the inner wall of the extrusion hose will form a large number of grooves due to the expansion unit, and these grooves will accumulate a lot of dust during the use of the extrusion hose. When the extrusion hose needs ...

AI Technical Summary

Problems solved by technology

[0002] The extruded hose has a huge market prospect, and the stretchability of the extruded hose is the key to gaining an advantage in the market competition. In order to increase the stretchability of the extruded hose, the telescopic units that make up the extruded hose are usually set When the extruded hose is composed of multiple folded telescopic units, stretching the extruded hose is the fold of the stretched telescopic unit, and compressing the telescopic extruded hose is the fold of the compressed telescopic unit. In this way, the expansion and contraction ability of the extrusion hose is guaranteed, but the inner wall of the extrusion hose will form a large number of grooves due to the expansion unit, and these grooves will accumulate a lot of dust during the use of the extrusion hose. When the extrusion hose needs airflow, a large number of grooves arranged in the extrusion hose will cause the airflow entering the extrusion hose to swirl, resulting in a lot of noise

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