Sandblasting hose The basic process flow of production and manufacturing includes mixing rubber production and processing, cloth curtain and white canvas production and processing, rubber hose forming, vulcanized rubber, etc. For rubber hoses with different structures and frames, their frame layer production and processing methods and rubber hose forming machines and equipment are different.

Since there is no frame layer for the rubber sandblasting hose, it is only necessary to press out the rubber hose with a punch; The cloth clamping hose must use the forming machine on the adhesive inside the tape; When taking out the rubber hose, wrap the metal material vortex line before wrapping the inner rubber; Manual knitting and coiling of rubber hoses must use special textile knitting machine or winding machine; Knitting machines must be used for knitted rubber hoses.

The key to the forming method of sand blasting hose is whether to select core tube, which is divided into coreless method and cored method (including soft core method and hard core method).

Coreless forming

Sand blasting rubber hose is coreless forming. The machine equipment is an extrusion machine (common single screw extruder), which forms the frame layer and outer glue on the pressed inner rubber hose immediately.

Sand blasted plastic particles are mixed, mixed, melted and clamped in the barrel by the placement effect of the extruder screw, and then moved to the direction of the engine, finally extruding a certain kind of commodity from the mouth shape. The single screw extruder has two kinds of hot feeding and cold feeding, and the front one feeds the strips heated by the open rubber mixer, The latter is fed with plastic particles that do not undergo heat refining.

Cored forming

Sand blasting rubber hose is formed with core, which means that the rubber hose is formed on the hard core or soft core to ensure that the rubber hose is under stress during the whole process of vulcanizing rubber. After forming, the rubber hose is wrapped with cloth (soaked wet rag roll with a width of about 10 cm), rope or lead, and then the rubber is vulcanized.

Vulcanized rubber can be immediately heated by steam in vulcanizing tank or continuously vulcanized rubber. polyester staple fibre Rubber hose The polyester staple fiber is immediately added to the plastic granules, and then pressed out to form. Its production process is simple, and it will gradually replace the knitted rubber hose and cloth clamping hose. The modern rubber hose production process tends to be high width ratio, continuous and automatic production. Selecting thermosetting plastic vulcanized rubber or plastic can save the vulcanized rubber process flow and greatly simplify the whole production process flow.