Outfield shape control forming device for laser online detection of the change of the polymer condensation state

Abstract

The invention discloses outfield shape control forming device for laser online detection of the change of the polymer condensation state, characterized by the device comprises a dynamic pressure-maintaining injection moulding die, a hydraulic system and a computer control system, characterized by the dynamic pressure-maintaining injection moulding die is composed of a movable die, a static die, ahot runner plate and hydraulic cylinders connected on both sides of the hot runner plate and a cylinder piston; the hydraulic system is connected with the hydraulic cylinders on both sides of the hotrunner plate; the computer control system is connected with the hydraulic system; the device is further set with a laser detection system, whose incident mechanism is installed on one side of the movable die; the receiving mechanism is installed on the other side of the movable die; the movable die cavity corresponding to the laser detection system is light transmitting type. The invention can realize the online detection of layering in the whole process of the structural change of the polymer condensation state while producing products, due to the laser detection system, and thus can be usedfor studying the relationship between the structure of the condensation state and the performance change of the polymer in the outfield.

Description

technical field [0001] The invention belongs to a device for on-line detection of microstructure changes in a shearing external field during injection molding of polymer materials, and specifically relates to an external field shape control molding device for online detection of polymer condensed state changes by laser, which is used to study polymer crystal morphology and Phase morphology changes and other important polymer physics phenomena. Background technique [0002] Since the polymer molding process such as injection molding and extrusion molding is accompanied by changes in crystallographic morphology and phase morphology, this change strongly affects the molding performance of the polymer and the physical and mechanical properties of the product, especially in the molding process. Products with different microstructures and different properties can be obtained by special external fields, but in ordinary injection molding equipment, there is no way to directly observ...

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Problems solved by technology

The system is to place the polymer melt between two glass plates that rotate or translate each other, and use the speed difference between the glass plates to generate shear. Obviously, this shear and injection or extrusion molding are generated by flow. The shear is quite different, so this system can neither be used to truly characterize the morphological changes during polymer molding, nor can the obtained samples be used to test properties after freezing, let alone to study polymer structure relationship with performance

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