Three-dimensional forming equipment capable of preparing soft-hard compound polyurethane product

Abstract

The invention discloses three-dimensional forming equipment capable of preparing a soft-hard compound polyurethane product. The equipment mainly consists of a material conveying unit, a screw extrusion unit, a three-dimensional forming platform unit and a safety equipment unit, wherein in the material conveying unit, a variable pump conveys an isocyanate mixture and polyol at different ratios to the extrusion unit; in the extrusion unit, a screw comprises a conveying section and a stirring section, wherein the stirring section is used for fully stirring the materials; in the three-dimensional forming platform unit, polyurethane is extruded to a carrying table to be deposited and formed. The safety equipment unit capable of preparing the soft-hard compound polyurethane product disclosed by the invention consists of an exhaust fan, an exhaust pipeline and a pair of rubber gloves; the exhaust pipeline can be used for discharging smell volatilizing in a reaction process of toluene diisocynate and polyol; by using the rubber gloves, the operator can directly take down articles from a forming platform without touch by hands. The safety forming unit is equipped, so that the safety and physical health of the operator are well protected.

Description

Technical field [0001] The invention relates to the technical field of three-dimensional printing, in particular to a three-dimensional molding equipment and method capable of preparing soft and hard composite polyurethane products. Background technique [0002] Rapid prototyping technology (also known as rapid prototyping manufacturing technology, Rapid Prototyping Manufacturing, referred to as RPM), also known as three-dimensional printing. According to the three-dimensional model data of the object, this technology manufactures the entity in a layer-by-layer superimposed manner through the molding equipment. It can overcome the special structural obstacles that cannot be achieved by traditional machining. Simplified production of arbitrarily complex structural components can be realized. [0003] At present, three-dimensional printing technology has been applied in many fields, but there are still some problems to be solved in three-dimensional printing technology. Among them, ...

AI Technical Summary

Problems solved by technology

In addition, when using photosensitive resin series materials to use different materials on a 3D printing model, the interface between the materials is too obvious, the bonding performance is poor, and it is difficult to meet the use requirements

Images