Direct immersion type cooling shaping processing production line of polyformaldehyde bar and processing method of direct immersion type cooling shaping processing production line

Abstract

The invention relates to a direct immersion type cooling shaping processing production line of a polyformaldehyde bar and a processing method of the direct immersion type cooling shaping processing production line. The direct immersion type cooling shaping processing production line comprises a material feeding machine, a material extruder, a cooling station, a traction station and a cutting station; the cooling station comprises a cooling shaping sleeve and a cooling water tank which is positioned on the rear side of the cooling shaping sleeve and is used for direct immersion of the bar; andthe cooling shaping sleeve comprises a shaping mold and a immersing cooling chamber, the shaping mold is provided with a discharging hole coaxial with an extruder head, the immersing cooling chamber is arranged on one side of the shaping mold, one end of the immersing cooling chamber communicates with the discharging hole, a discharging sealing hole allowing a bar to be pushed out is formed in theother end of the immersing cooling chamber, and the shaping mold and the immersing cooling chamber are both connected with a cooling water pipe group. Water is supplied to the discharging hole in theshaping mold, an extruded rod body is indirectly cooled and shaped, and then is directly cooled in a direct immersion manner, so that the rod body is always cooled by relatively low-temperature cooling water in a curing stage, and the problem that a gap is generated in a core part due to temperature difference is solved.

Description

technical field [0001] The present application relates to the field of plastic processing technology, in particular to a direct immersion cooling and shaping production line for polyoxymethylene rods and a processing method thereof. Background technique [0002] At present, extrusion molding is also called extrusion molding or extrusion molding. It mainly refers to the extrusion of a screw or a plunger, so that the heated and melted polymer material is forced to pass through the mold of the die under the pressure to form a A method of forming continuous profiles of constant cross-section. The extrusion molding process mainly includes the processes of feeding, melting plasticization, extrusion molding, shaping and cooling. It generally includes a plastic extruding main machine, and an auxiliary machine composed of a machine head, a shaping device, a cooling device, a traction device, a coiling device, a cutting device and other devices. [0003] At present, some highly crys...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that when this method is used to form POM rods with large diameters (such as Φ150 as an example), because the diameter is too thick, after the external cooling of the rods is completed, the external water-cooling effect will not be effective. The influence of the core is reduced, resulting in the "white core" still being produced, that is, extremely small pores, which leaves hidden dangers for later use

Images