I. From the use:
- Plastic moulds: used to manufacture plastic products. Such as: 3C products, automobile and motorbike structural parts, interior parts, daily necessities, children’s toys, PVC water pipe joints for construction, handles of various tools, precision instrument parts, etc. involving every corner of life.
- Stamping die: used for manufacturing metal sheet metal, sheet material cutting under the material, etc.. Such as: computer and other types of chassis, cabinets, stainless steel kitchenware, connector terminals, connector copper, circuit board cutting holes, sheet metal forming, fast food box forming, etc.
- Die-casting moulds: mainly used for the production of aluminium alloy, zinc alloy, magnesium and aluminium alloy castings. Such as laptop shell, car and motorbike engine, speaker, valve body parts, etc.
- Compression moulds: mainly used for the production of rubber and silicone rubber products, such as various waterproof rings, trim parts, buffer parts, pads, mobile phone keys, etc.
- Blow moulding, blister moulding: mainly used for the production of plastic hollow container products. Such as various beverage bottles, plastic pots, cosmetic boxes, shampoo bottles, inflatable toys, plastic packaging, etc.
- Extrusion moulds: mainly for various profiles, such as aluminium alloy doors and windows for construction, wire channels.
- Semiconductor moulds: mainly for the production of various secondary tubes, tertiary tubes and other electronic and electrical components.
- FRP moulds: Bakelite moulds belong to thermosetting moulds
II. One of the most widely used is plastic moulds, because of the wide variety of plastic products, so plastic moulds also have various classifications:
Classified in terms of quality requirements.
- Mass production mould
The production capacity of a mould mainly refers to the maximum number of products that can be produced during the life of the mould.
According to the US [SPI-SPE] standard, these can be classified as follows.
1.101 (long term precision production moulds with a production capacity of 1,000,000 shots or more)
2. 102 (up to 1,000,000 shots, mass production moulds)
3.103 (less than 500,000shots, medium production moulds)
4.104 (less than 100,000shots, low volume production moulds)
5.105 Class 1 moulds. (less than 500 shots, handicraft or test moulds)
- Prototype moulds
Generally used in the development stage of product production, the production volume is generally very low, equivalent to 105 class moulds, for the appearance of the product, dimensional accuracy requirements are not high, mostly used in the ongoing design of the product testing.
Classified by structure.
- Large spout moulds
- Fine spout moulds
- Simplified fine spout moulds
- Inverted moulds
6.Master Unit Die
MUD mould is a standardised universal mould structure, generally for small products, the mould frame part is common, only the core part is replaced, simple structure, low cost, also called quick change mould.
Classification in terms of plastic material.
- ordinary monochrome moulds, transparent products moulds
- DOUBLE MOULD, such as toys, watch straps, etc.
- OVER MOULD, over-injection moulds, e.g. various handles with metal inserts
- repeatedly injected hard/soft integrated mould (two kinds of plastic with different melting temperatures or two different kinds of plastic moulded successively in the mould or twice)
- foaming mould and Gas Assisted Technology mould
III. From the mould material classification:
- soft mould Commonly used steel is P20(28~32Rc) S50C
- prehardening mould Commonly used steel is HH P20(33~37Rc)
- hardened mould Commonly used steel is H-13(48~52Rc) S-7(52~54Rc) S136(52~54Rc)
- stainless mould Commonly used steel is 420ss(33~37Rc) 420H(32~34Rc) 420(48~52Rc)
- aluminum mould commonly used material is aluminum plate Al(28~32Rc) equivalent to P20 steel
- BeCu(40~42Rc) generally used as insert material
IV. From the mold hardening method classification:
heat treatment nitriding-treatment chrome plating nickel plating
- cold runner
- hot runner
Hot runners are divided into hot sprue or hot and manifold
Hot nozzles are available in two forms: open type system and valve type system
The main suppliers of hot runners are
YUDO (Korea Yudo) HASCO (Germany) DME (USA) MASTIP (New Zealand) HUSKY (Canada) INCOE (USA) Synventive (headquartered in the Netherlands) [Eurotool Europe and Dynisco USA two companies merged]
V. Classification from mould size:
350mm or less for small moulds.
350~600mm for medium-sized moulds.
Over 600mm is a large mould.
Moulds with a weight of more than 10 Tons are extra large moulds. Must be large-scale mould factory can manufacture.
VI. From the production mode classification.
- Non-export, small quantity production
- No export, mass production
- Export, no production
- Export, small quantity production before export
- Export to different countries to meet the industrial standards of different countries, Europe uses the imperial system (inch) the United States uses the American system (UNC) Asia and Australia for the metric system (mm) standard, for different customers to use their specified standards, such as mold standard mold embryo, mold steel, mold accessories, cylinders, hot runner, injection molding machine, etc..
The moulds are tested and packed according to the customer’s standards before export.
The moulds are then transported by sea (by sea) or air (by air) in accordance with the established shipping methods.
Brands of well-known suppliers of mould steel and standard accessories are
LKM (Hong Kong), MingLee (Hong Kong), HASCO (Germany), FUTABA (Japan), DME (USA)
DAIDO (Daido, Japan), Textron (Germany), ASSAB (ASSAB, Sweden), Punch (Panzai, Japan). STRACK (Germany) and RABOURDIN (France) plastic, stamping moulds for conventional parts
Commonly used plastic materials well-known manufacturing companies are.
CHIMEI (Taiwan Chi Mei), GE (USA), Dupont (USA), RTP (USA), BASF (Germany), LG (Korea)
Precision moulds are mainly used for the production of various connectors (such as telephone connectors, network cable connectors, internal components of electrical appliances, etc.), gears, optical instruments (various lenses, reflective lenses, etc.), various instrumentation parts, transmission parts (such as printers, copiers transmission parts, etc.) and other high-precision products.
The surface requirements of the moulds for products are generally
Polishing (polish) etching (also called nibbling) (texture) mirror polish (mirror polish) sandblasting, etc.
Polishing is done by hand, using whetstone, sand paper and drilling plaster.
The bite needs to be carried out by a professional factory, the bite has a special bite number, the standard bite has the United States MOLD-TECH Germany VDI Japan NIHON ETCHING etc.