Terracotta Wall Louver, as a building decoration material, not only has the advantages of compact structure, good freeze-thaw resistance, acid and alkali resistance, abrasion resistance and smooth and clean appearance, but also has the decorative effect of rich colors and beautiful appearance. Terracotta Wall Louver is generally sintered into products in a tunnel kiln or roller kiln. The firing temperature is generally as high as 1200℃. Obviously Terracotta Wall Louver belongs to the category of porcelain vitrified tiles, so it is very smooth and clean, without deformation and micro cracks. Other defects, due to compact structure, high physical and mechanical strength and low water absorption. Therefore, although the external structure and working principle are basically similar, the internal structure is still quite different.
According to the extrusion orientation of Terracotta Wall Louver blanks, screw extrusion forming machines can be generally divided into vertical screw extrusion forming machines and horizontal screw extrusion forming machines. However, due to the cutting and conveying of the formed blanks, it is currently widely used Almost all the screw extrusion machines used are horizontal screw extrusion machines. Horizontal screw extrusion molding machines can be generally divided into single-axis screw extrusion molding machines, dual-axis screw extrusion molding machines and three-axis screw extrusion molding machines according to the reamer shaft.
The three-axis screw extrusion forming machine is generally composed of upper and lower bottom plates, pillars, vacuum piping system, upper mud mixing mechanism and lower mud squeezing mechanism. It adopts variable frequency speed control motor or electromagnetic speed control motor and gradually The open-line cylindrical gear planetary reducer drives the rotation of the mud reamer and the squeeze reamer respectively, which makes it easier to achieve the dynamic balance of the ceramic mud and fundamentally eliminates the clogging of the vacuum chamber, which is beneficial to follow the Terracotta Wall The change of Louver specification and size, the appropriate rotating speed of the squeezing cutter shaft and the squeezing cutter shaft, can optimize the performance of the screw extrusion forming of Terracotta Wall Louver, which is conducive to the obtained Terracotta Wall Louver green body and the maximum increase The sintered porcelain pass rate of Terracotta Wall Louver products, etc.
When the three-axis screw extrusion forming machine is working, the upper two mud mixing shafts respectively drive the left-handed reamer and the right-handed reamer to rotate in reverse, which can fully crush, stir, knead and mix the added ceramic mud. It is beneficial to obtain Terracotta Wall Louver body with material distribution tending to be uniform and isotropic, reduce its extrusion forming defects and subsequent drying and sintering deformation cracking of Terracotta Wall Louver body, and obtain Terracotta Wall Louver products. At present, in the production process of Terracotta Wall Louver at home and abroad, the widely used screw extrusion machines are almost all three-axis screw extrusion machines.