Chapter 6 Quantitative Production Equipment and mold maintenance 6. 1 Injection Molding Machine 6.1.1 Basic Principles of Injection Molding Machine The injection and molding is achieved through the injection molding machine and molds. Though in various types, the injection molding machine, no matter which type it is, comprises only two basic functions: 1)to heat plastics and make them fuse, 2)to apply high pressure on the fused plastics, make them eject and fill the mold cavity E 1. SP108A injection molding machine, 2. drier and hopper, 3. water tower; 4. water pump 5. control machine for rapidly heating and cooling injection molding According to the mode of plastication, the injection molding machine falls into the following two 1)Plunger Injection Molding Machine The plunger injection molding machine pushes forward the fused plastics in the charging barrelChapter 6 Quantitative Production Equipment and Mold Maintenance 6.1 Injection Molding Machine 6.1.1 Basic Principles of Injection Molding Machine The injection and molding is achieved through the injection molding machine and molds. Though in various types, the injection molding machine, no matter which type it is, comprises only two basic functions: 1) to heat plastics and make them fuse; 2) to apply high pressure on the fused plastics, make them eject and fill the mold cavity. According to the mode of plastication, the injection molding machine falls into the following two types： 1) Plunger Injection Molding Machine The plunger injection molding machine pushes forward the fused plastics in the charging barrel Fig.6-1: highlight and no-welding-line injection molding system 1. SP108A injection molding machine; 2. drier and hopper; 3. water tower; 4. water pump; 5. control machine for rapidly heating and cooling injection molding 3 4 1 5 2