Quality of Molded Parts
This chapter explains the molding process, which is closely related to the quality of the molded products. It also describes the key…
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Technology
Lifting Eye Bolts
A bolt on which a crane wire is hooked when installing a mold to the...
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Guide Rails
A part that functions as a guide for a slide core, preventing floating of a...
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Injection Molding
One of the molding methods for plastics. A molding material is mixed in the injection...
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Counter
A counter that counts the number of ejections after the completion of mold clamping when...
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Guide Pins / Guide Bush
Guide pin and bush are have a pin and a cylindrical part that function as...
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Mold for Forming Screw Thread
This appendix explains the major types of molds and their movements for screws. Screw thread molding is the same as the undercut…
Determining Mold Material
You will learn how to determine the material of mold in this chapter. The material of the mold is determined depending on usage. Material Criteria The…
Considering Mold Dimension
In this chapter, you will learn about items for consideration of mold dimension. Mold Dimension The dimension of a mold attached to the molding machine is…
Degassing and Air Venting
You will learn about the necessity of degassing and air venting as well as their design. What is degassing and air venting? When molten plastics fills…
Mold Cooling
You will learn about the effect of mold cooling, position of cooling channel, and cooling method for each part. The temperature of a mold has a…
Ejecting Parts
An ejector pin is connected to an ejector plate to eject parts out of a mold. It is necessary to carefully consider its position so that…
Undercut Process
In this chapter you will learn about the process for an undercut part. Undercut refers to the convex or concave area of part. When removing the…
Runner System
In this chapter, you will learn about the functions, characteristics, and shapes of the sprue, runner, and gate. The molten plastics injected from the injector nozzle…
Cavity and Core in mold
In this chapter, you will learn about the cavity and the core. You will learn the types of inserts and their processing methods, position, material and…
