Abstract: An injection molding adaptive compensation method based on melt viscosity fluctuation comprising: initializing equipment; in a pre-calculation stage, introducing melt into a mold cavity at a constant rate, collecting pre-calculation parameters in each sampling period T, and obtaining a first injection work in the pre-calculation stage by using a first calculation formula; in a self-adaptation stage, introducing the melt into the mold cavity at a constant rate, collecting adaptive parameters in each sampling period T, and obtaining a second injection work in the self-adaptation stage by using a second calculation formula; calling the PVT characteristics of current processing raw materials to construct a PVT relation function, and obtaining an optimized V/P switching point by using a PVT weight control model; and according to the injection work at the pre-calculation stage and the injection work at the present stage, obtaining an optimized holding pressure according to an injection work adjustment model.

Abstract: An injection moulding machine comprising a fixed tool clamping plate, a movable tool clamping plate and a protection device comprising lateral frame elements or lateral covers, wherein the clamping plates are arranged between the lateral frame elements or the lateral covers and the movable tool clamping plate can travel along a closing axis which runs parallel to the lateral frame elements or the lateral covers in relation to the fixed tool clamping plate, wherein the protection device further comprises first cover elements arranged on the top side of the machine, both on an operator side and on the operator opposite side, which first cover elements extend parallel to the closing axis, the first cover elements being configured for a radial movement, and wherein the protection device further comprises second cover elements on the top side of the machine which extend perpendicularly to the closing axis, wherein the second cover elements being configured for radial movement.

Abstract: The invention provides an injection molding method of stone-based composite material and equipment thereof, wherein the method comprises the following steps: a. putting raw materials into a charging device and then pushing the raw materials into a preforming machine barrel of a preforming device by a pressing component in the charging device; b. keeping the temperature being between 15° C. and 55° C. and compacting the raw materials with the rotation of a preforming screw and transporting the raw materials into a collecting block; c. injecting the raw materials into a mold through a mold gate under the injection force of 50 Mpa to 180 Mpa; d. keeping the temperature of the mold between 140° C. and 200° C. and curing time between 40 seconds and 300 seconds; and e. opening the mold to get the product. The invention has the advantages of simple production process, high acceptance rate of products manufactured, high production efficiency and low production cost.