THIẾT TRÌNH THIẾT KẾ CHẾ TẠO KHUÔN MẪU ĐỦ 25 BÀI_12_EN

• The composition and characteristics of the part, how to calculate the size and layout silver spray stalk, entrance channel and plastic • Computing applications, systems design to chann

(Cold runner)

• Tasks and technical requirements?

• The composition and characteristics of the part, how to calculate the size and layout silver spray stalk, entrance channel and plastic

• Computing applications, systems design to channel cool computer mouse shell (using Creo to design)

Tasks and technical requirements?

• Guide channel system cools the molten resin from the nozzle of the injection molding machine via Roll puff, canals and then into the cavity vent

• c) Design Principles

• - Make sure the filling and the cavity

• - Choosing the right location for vents why not affect

• Cosmetic products and mechanical properties of the product

• - Be sure to get the product quickly

Composed of cold channel system

1 Roll Silver Spray

• The size of a nozzle

stalk injection

Part materials in that branch from freezing early obstruction in the design flow

should further slow cooling tail.? • Usually located in the intersection of the channel branch

R0.5 should bo corners

Channel system

I FLOW IN channel

The thickness of the plastic layer freezes affected:

• Speed Inkjet

• The Melting

• The temperature of the mold

II.KENH his people

• 2 Kenhnhua: is the connection between injection and vents Roll

Request of canals

Có thểtính đường kính thủy lực dựa vào công thức:

Specifications channel

• The surface area of the smallest cut.? • Speed slow cooling.? • Less friction.? • It helps maintain core slowly cools heat and pressure.? • Difficult for machining between two concentric half mold

2.2 The type of channel cross section.

•Larger surface area for effective trapezoidal channel correction should lose heat faster.

• Ease of processing.

• Do not cool section should make funeral friction, pressure, irregular.

• Ease of processing.

The size of the channel (there are 2 methods

• Size calculation based on cross section cut

D: channel diameter (mm) W: weight of products (g) L: channel length (mm)

or:

D ': diameter reference channel fL: coefficient length

• The relationship between the diameter of the main channel and branch channels:

• Dc: The main canal diameter (mm)

• Dn: branched channel diameter (mm)

• N: number of diverters