Automatic heat treatment device used for polylactide die

Abstract

The invention relates to an automatic heat treatment device used for a polylactide die. The automatic heat treatment device comprises an automatic roller bed, an exchange type worktable, a braking oven body, a control cabinet, a motor I, a worktable sliding way and a PT100 temperature sensor. The braking oven body comprises a body frame, an inner-layer structure, a maintenance door, a heating device, a sealing side plate, a worktable exiting and entering automatic door, a material taking automatic door, a manual door, a circular guide rail, a lifting air cylinder I, a lifting air cylinder II and a floating connector. The inner-layer structure comprises an upper cover plate, a left side bottom heat insulation cavity, a right side bottom heat insulation cavity, a left side inner-layer plate, a front air way stand column, a rear air way stand column, a rib plate and a ventilation net plate. Two airflow circulation devices are arranged at the middle portion of the maintenance door, and the heating device is fixed to the upper cover plate. The automatic heat treatment device is high in automation level, the airflow circulation devices are additionally arranged, an inner-layer metal plate structure is improved, an air way I and an air way II are formed, guided and heated air does not directly act on the die, the die is heated evenly, and secondary deformation of softening of the die is avoided.

Description

technical field [0001] The invention relates to the field of heat treatment technology for molds made of polylactide, in particular to automatic heat treatment equipment for molds made of polylactide. Background technique [0002] Among the mainstream 3D printing technologies today, Fused Deposition Modeling (FDM) and Three-Dimensional Printing Process (3DP) are two relatively mature and common printing technologies due to the cost, source, and production technology of matching materials used. Among them, the polylactide (PLA) printing material used in FDM printing is the most ideal green polymer material because the source of raw materials is fully renewable, the production process is pollution-free, and the product can be biodegraded. [0003] With the maturity of 3D technology, the precision of printed finished molds has been qualitatively improved compared with molds made by traditional methods. Due to the internal stress generated by the thermal deformation of the prin...

AI Technical Summary

Problems solved by technology

In the past, the orientation of the furnace body is fixed after the mold is installed. When the furnace body heats the mold, one or more sides will always be directly heated for a long time, resulting in secondary softening and deformation of the mold and affecting the effect of heat treatment.

For example: the patent document of CN205316963 discloses a vertical heat exchange alloy baking furnace system. Through the air outlet and the reasonable arrangement of the burners, the heated high-temperature gas enters from the top, and the air convection in the furnace is strengthened. The high-temperature gas directly The effect on the surface of the workpiece, this kind of scheme is not suitable for PLA material forming molds, and it is easy to cause secondary deformation of the mold; the patent document of CN105695667 discloses a desktop heat treatment furnace using a furnace door opening motor to open the chain and the furnace door Link, the pulley sets up the furnace door opening chain to a certain height, the furnace door opening motor pulls the furnace door opening chain to drive the furnace door movement, and realizes the opening and closing of the furnace door. This structure is complex and takes up a lot of space.

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