Concrete Pump Rubber Hose Forming method
Concrete pump rubber hose forming process
Concrete pump rubber hose production of the basic processes for the processing of rubber, cord and canvas processing, concrete pump rubber hose molding, curing and so on. Different structures and different skeleton of the concrete pump rubber hose, the skeleton of the processing methods and concrete pump rubber hose forming equipment vary.
Full rubber concrete pump rubber hose for the lack of skeleton layer, just use the extruder out of the concrete pump rubber hose can be; cloth cloth concrete pump rubber hose need to use the tape wrapped in the inner layer of the molding machine; Suction and concrete pump rubber hose need to use a special fabric weaving machine or winding machine; knitted concrete pump rubber hose need to use the knitting machine Wait.
Concrete pump rubber hose molding method mainly to whether the use of die, divided into coreless method, and a core method (including soft core and hard core method).
Screw Extruder Parts Sectional Drawing Screw Extruder Parts Sectional Drawing
Concrete pump rubber hose coreless molding, the equipment is extrusion machine (commonly used screw extruder), the skeleton layer and the outer layer directly in the extrusion of the concrete pump rubber hose on the shape.
The compound is agitated, mixed, plasticized and pressed in the barrel by means of the extrusion screw, and then moved to the direction of the nose, and finally the product of the shape of the extruder is extruded from the mouth, And cold feed two, the former feed through the open mixing machine preheating of the material, which feed not through the hot rubber compound.
Concrete pump rubber hose with core forming, refers to the concrete pump rubber hose in the hard core or soft core on the shape, in order to ensure that the concrete pump rubber hose in the vulcanization process in a state of pressure, concrete pump rubber hose in the molding after the package Water cloth (about 10cm wide damp cloth), rope or leaded, and then vulcanized.
The vulcanization can be carried out by direct steam heating or continuous vulcanization of the vulcanization tank. Short fiber concrete pump rubber hose is the short fiber directly into the compound, and then out of molding, the production process is simple, it will gradually replace the knitted concrete pump rubber hose and cloth concrete pump rubber hose. Modern concrete pump rubber hose production process tends to be highly continuous and automated production. The use of thermoplastic rubber or plastic can save the vulcanization process, greatly simplifying the production process.
1, with the mixer by mixing the inner layer of plastic, the middle layer of plastic and rubber; extruder extruded with the inner tubing, coated with a release agent on the soft or hard core (liquid nitrogen Freezing method can also not die)
2, calendering machine into the middle of the film, plus release agent and according to the process requirements cut into the required width
3. Wrap or braid the copper-coated steel wire or copper-plated steel wire rope on the winding machine or knitting machine with the inner tube of the die, and simultaneously laminate the middle layer of the film in the winding machine or knitting machine on every two layers of copper or copper Wire rope, winding wire at the beginning and end of the banding (some early winding machine in advance to be pre-coated copper wire pre-stress treatment)
4, once again in the extruder coated on the outer plastic, and then wrapped in lead or cloth vulcanized protective layer
5, through the curing tank or salt bath curing