How to deal with the problem of stripes when processing injection molded parts?

The correct planning, careful processing, reasonable mold repair and timely nitriding of injection molded parts are the key methods to avoid the defects of stripes. In the process of injection molding, it is necessary to strictly follow the drawing requirements for processing, and pay special attention to improving the appearance of the shunt hole and the mold bridge is dripping form to improve the flow state of solid metal and reduce the heat generated by friction.

For the injection mold extrusion with tissue stripes, the mold repair worker should personally go to the site to understand the discharge of the injection mold and determine the correct mold repair plan. The mold repairer should personally observe the instantaneous state of the profile discharge, which is more effective than observing the profile discharge head to determine the mold repair plan. In addition, for products, nitriding treatment should be carried out in time according to regulations to ensure the reasonable activity state of solid metal.

During the processing of injection molded parts, the shunt holes should be correctly planned and rationally arranged, the length of the working belt and the transition of the length change should be determined, and the mold bridge should be dripping and a reasonable welding angle. By making the welding point fall on the plane of the welding chamber, and under the condition of ensuring the rigidity and strength of the die core head, deepen the depth of the welding chamber or expand the cross-sectional area of the welding chamber, "sink bridge" is selected when necessary, as a basic method to avoid the defect of stripes.

The correct planning of the injection molding process is the basis for ensuring product quality. Reasonable layout of the shunt holes can make the molten plastic evenly distributed when it is injected into the mold, avoid uneven flow, and reduce the generation of stripes. Determining the length of the working belt and the transition of the length change can ensure the stability of the injection molded parts during processing and avoid undesirable deformation and stripes.

The drip form of the mold bridge and the reasonable welding angle can make the molten plastic flow more smoothly in the injection molding process, reduce the resistance and friction heat generation. At the same time, by ensuring that the welding point falls on the plane of the welding chamber, and deepening the depth of the welding chamber or expanding its cross-sectional area, the sealing and fluidity of the mold can be improved, thereby further reducing the generation of stripes.

Timely nitriding treatment is an important step to ensure the active state of solid metal. Nitriding can increase the hardness and wear resistance of the mold surface, improve the life of the mold, and reduce the friction and heat generation of solid metal, thereby effectively avoiding the appearance of stripes.