Manufacturing method of carrier

Abstract

A manufacturing method of a hybrid-carrier includes injection-molding the hybrid-carrier, solidifying the injection-molded hybrid-carrier by cooling it down, making holes in the solidified hybrid-carrier to attach other parts to the hybrid-carrier, and mounting nuts on the hybrid-carrier in which the holes are made. The hybrid-carrier is manufactured by the above method in that holes are made in and nuts are mounted on the hybrid-carrier whose deformation is already complete even if the hybrid-carrier undergoes deformation during the process of solidification after being injection molded, thereby minimizing the errors and corrections when mounting other parts to the hybrid-carrier.

Description

technical field [0001] The present invention relates to a method of manufacturing a hybrid bracket made of plastic and steel, which withstands deformation after injection molding, wherein a plurality of holes are drilled in the bracket for assembling components to be mounted on a hybrid bracket components on the shelf, thereby precisely correcting the size of the hole and reducing manufacturing costs. Background technique [0002] Typically, the frame that defines the exterior of a vehicle includes a passenger compartment, an engine compartment, a trunk, fenders, and the like. The frame is divided into a front frame, a center frame, and a rear frame in the longitudinal direction of the vehicle. [0003] The front frame houses a bracket that has the headlights, radiator, condenser, bumper, etc. mounted thereon. In terms of a technology for integrally assembling headlights, radiators, condensers, bumpers, etc. to the frame panel of a vehicle, in order to improve assembly eff...

AI Technical Summary

Problems solved by technology

[0009] First, because the multiple holes that assemble the headlight or bumper with the hybrid bracket during the injection molding process are undercut parts in the pull-out direction of the injection mold, there is a problem that the injection molding process needs to apply Sliding cores become complicated

[0010] Second, when deformation of the molded hybrid bracket occurs due to a cooling process after drilling a plurality of holes for assembling the parts, there is a problem that gaps or bifurcations are formed at the height of the parts, and Dimensions change for multiple holes

[0011] Third, when molded hybrid brackets are deformed before they are completely solidified in the cooling process after the injection molding process, there is a problem that the percentage of defective products increases with the diffusion of air bubbles in the holes during the nut insertion process. Increase

[0012] Fourth, since the deformation of the mixing bracket occurs as described above, then there is a problem that the time to optimize the product quality is lengthened due to errors in the shape of the mixing bracket and incorrect injection heights

[0013] Finally, since an additional correction device with a sensor is required to correct the gap or bifurcation in height caused by the deformation of the hybrid bracket, there is a problem that such a correction device is expensive, increasing the manufacturing cost

Images