The Landscape Stone pultrusion process is to immerse the untwisted stone roving, felt and other reinforcing materials on the creel into the glue liquid through continuous traction by a traction device, and then pass through a heated mold with a fixed cross-section shape, and then solidify and form in the mold to achieve Automated production process for continuous demoulding.
For
stone sculpture with fixed cross-sectional dimensions, pultrusion technology has obvious advantages. Since the pultrusion process is an automated, continuous production process, it has the highest production efficiency compared with other
stone carving production processes. Secondly, the raw material utilization rate of pultruded products is also the highest, generally above 95%. In addition, pultruded products have low cost, excellent performance, stable quality and beautiful appearance. Due to these advantages of pultrusion technology, its products can replace metal, plastic, wood, ceramics and other products, and are widely used in chemical industry, petroleum, construction, electricity, transportation, municipal engineering and other fields.
Under the pulling force of the pultrusion equipment, the Landscape Stone material is fully impregnated with glue in the dipping tank. Under the reasonable guidance of a series of prefabricated templates, it is initially formed and enters the heated metal mold. The mold reacts and solidifies under the action of high temperature. Continuous stone carving profiles with smooth surface, stable dimensions and high strength can be obtained.
The main equipment for realizing the Landscape Stone pultrusion process is the pultrusion machine, which can be roughly divided into horizontal and vertical types. Generally speaking, horizontal pultrusion machines have a simple structure and are easy to operate. They have no special requirements for the structure of the production workshop. Moreover, the horizontal pultrusion machine can adopt various solidification molding methods, so it is widely used in the pultrusion industry.
The processes of the vertical pultrusion machine are arranged in the vertical direction and are mainly used to manufacture hollow profiles. This is because the mandrel can only be supported at one end, and the other end is free and unsupported, so the vertical pultrusion machine will not cause uneven wall thickness of the pultruded product due to the cantilever of the mandrel. This kind of pultrusion machine is no longer used due to its large limitations and single product. Whether they are horizontal or vertical pultrusion machines, they are mainly composed of five parts: yarn feeding device, glue dipping device, forming mold and curing device, traction device and cutting device. The corresponding process flow is yarn arrangement, glue dipping, and forming. Curing, pulling and cutting.
