What are the Standards for Injection Mold Accessories?
Injection molds are important tools for producing plastic products, and mold accessories are key components that makeup injection molds. The quality and standardization of mold accessories directly affect the performance, service life, and production efficiency of the mold.
Classification of Injection Mold Accessories
There are many types of injection mold accessories. According to their functions and uses, they can be divided into the following categories:
Standard parts: Refers to general-purpose parts whose size, shape, structure, and performance meet certain standards, such as bolts, nuts, washers, pins, springs, etc.
Guiding parts: Parts used to guide the opening and closing movement of the mold, such as guide pillars and guide sleeves.
Positioning parts: Parts used to ensure the relative position of the mold cavity and core, such as positioning pins and positioning blocks.
Fastening parts: Parts used to connect and fix various parts of the mold, such as bolts and clamps.
Ejection mechanism: Parts used to eject plastic products from the mold, such as ejector rods and ejector plates.
Cooling/heating system: Parts used to control the mold temperature, such as cooling water pipes and heating rods.
Other accessories: Sprue bushings, runner plates, mold counters, etc.
Main International Accessory Standard Systems
Mold Bases and Standard Parts (DME/HASCO/MISUMI)
DME Standard (USA): Covers mold bases, ejector pins, guide pillars, guide sleeves, etc. It is mainly in imperial units and emphasizes high precision and modular design.
HASCO Standard (Germany): Centered on metric units, it is widely used in the European market. It has strong compatibility with accessories such as hot runner systems and positioning rings.
MISUMI Standard (Japan): Provides a highly customized accessory library, supports rapid selection, and is suitable for precision molds and automated production scenarios.
Hot Runner System Standards
ISO 12165: Specifies the dimensional tolerances and performance requirements of hot runner nozzles and heating elements to ensure the stability of temperature control.
Enterprise standards: YUDO (Korea), Mold-Masters (Canada), etc., provide high-performance hot runner accessories to meet the needs of complex molds.
Ejection System Standards
Ejector pins, push plates: The size and tolerances comply with the ISO 6751 standard to ensure the smooth and durable ejection action.
Springs and guide parts: Adopt DIN or JIS standards to ensure the elasticity and accuracy of the ejection system.
Advantages of Standardization
Improve production efficiency: Standardized accessories can achieve rapid selection, procurement, and assembly, shortening the mold manufacturing cycle.
Reduce costs: Strong versatility, reduce customization needs, and reduce inventory and procurement costs.
Improve quality: Strict standards ensure stable performance of accessories and prolong the service life of the mold.
Promote technical exchange: A unified standardization system facilitates technical cooperation and resource sharing within the industry.
