Automatic Design of Hot Air Process for Deburring of Blow Injection Molded Products

The blowing process is advantageous in that it is possible to quickly produce complex shapes of products at a low cost. However, there is a problem that burrs are generated during the process of forming the two metal molds in contact with each other. In this paper, we propose a deburring system using non-contact hot air and perform optimization research for effective deburring. Differential scanning calorimetry (DSC) analysis of high-density polyethylene was carried out to confirm the melting point of about 130℃. Based on the DSC experimental data, it was confirmed whether the hot air was deburred between 130℃ and 500℃. As a result, it was confirmed that the deburring was effective at about 500℃. The temperature of the hot air was fixed at about 500℃ and the feeding speed of the conveyor belt was experimented. As a result, effective deburring was possible when the feeding speed was 4 m/s ~ 5 m/s.