Production method of in-out dual purpose gas-liquid conveying hose and solid core rod mould used in production

Abstract

The invention makes public a kind of composite hardcore bar model which is used to produce soft tube that is used to import and export liquid or gas. The model consists of linking shank, locating taper bed, arc steel board, and steel linking sector. The linking shank passes through the taper bed and connects to the taper bed firmly. Several steel linking sectors are on the taper bed, and there are gaps between them. The linking shank can lead the taper bed away from the steel linking sectors. Every arc steel boards connect to corresponding steel linking sector firmly. And the arc steel boards form a column face. The invention also makes public a method of using the above model to make soft tube. The method includes the following steps: combine the hardcore bar model; wrap the model with steel wire, inner sub, reinforcing layer, outer sub, and outer steel armour; steal the tie-in and then get finished soft tube; pull the linking shank to move the taper bed from small section to big section, and then remove the model to get out the soft tube.

Description

technical field [0001] The invention relates to a mold and a production method of a gas-liquid conveying hose, in particular to a combined hard mandrel mold and a method for producing a flexible hose with it. Background technique [0002] At present, the commonly used manufacturing method of the dual-purpose gas-liquid conveying flexible hose is the hard mandrel forming method, the outer diameter of the hard mandrel is fixed, the mandrel is made of steel or light alloy, and the outer diameter is the nominal value of the rubber hose. The inner diameter and the length of the mandrel are matched with its three-roll forming machine, and the general length is 5m, 10m, 20m in fixed length. [0003] The operation process is as follows: firstly put the inner rubber layer into the anti-adhesive hard mandrel, then wrap the reinforcing fiber fabric along the longitudinal direction of the hard core, if necessary, the armored steel wire can also be wrapped at one time according to the re...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a hard mandrel mold for producing a dual-purpose gas-liquid conveying hose for suction and drainage, which solves the difficulty in removing the hard mandrel mold during the processing of flexible hoses, and the length of the hose is affected by the length of the hard mandrel mold. limit problem

[0006] Another technical problem to be solved by the present invention is to provide a method of using the above-mentioned hard mandrel mold to produce a dual-purpose gas-liquid conveying flexible hose for exhaust and suction, which solves the problem of high energy consumption of vulcanization equipment, large pollution, and negative pressure resistance of the hose. bad question

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