Mold for preparing EPP steering wheel

Abstract

The invention discloses a mold for preparing an EPP steering wheel. The mold comprises an upper mold and a lower mold, the upper mold is internally provided with an upper cavity, and the lower mold is internally provided with a lower cavity. The mold for preparing the EPP steering wheel is characterized in that a movable insert is arranged in the lower mold, the movable insert is driven by a driving mechanism to move up and down in the lower mold, the top of the movable insert is provided with a movable cavity, and the upper cavity in the upper mold, the lower cavity in the lower mold and the movable cavity in the movable insert are matched to form a forming cavity used for forming an EPP layer on the steering wheel. The EPP layer of the EPP steering wheel prepared through the mold is large in density and compact in structure, the surface is smooth and elastic, the whole EPP layer is complete and free of shrinkage cavities, no defect exists, and the quality is very high. Meanwhile, due to the fact that the upper mold and the lower mold are subjected to mold closing before material injection is conducted, and parting surfaces of the upper mold and the lower mold are gapless, no burr exists on the final EPP steering wheel basically, burrs do not need to be removed manually, and the cost of manually removing the burrs is reduced.

Description

technical field

[0001] The invention relates to the technical field of EPP steering wheels, in particular to a mold for preparing EPP steering wheels. Background technique

[0002] After the automobile steering wheel frame is manufactured, it is necessary to coat the outer side of the frame with an injection molding layer. The common steering wheel frame will be covered with PP material or EPP material. EPP material has excellent shock resistance, energy absorption, corrosion resistance, and good insulation performance. The surface of the material Stiffness and scratch resistance properties are good. In addition, its light weight allows for a significant reduction in item weight, thereby improving the comfort and overall quality of the steering wheel grip. Now the EPP foam molding of the steering wheel frame is realized through ordinary molds. The general skeleton mold includes a die and a punch. The die and punch are equipped with a cavity that is compatible with the skele...

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