Injection mold type: cold runner mold
author: Universe plastic
2024-07-30
Cold runner mold is a type of injection mold. Its main principle is to guide molten plastic into the mold cavity through the cold runner structure.
Compared with hot runner molds, cold runner molds have a relatively simple structure and lower costs, but the condensed runner material needs to be removed after each injection molding.
The following is a detailed introduction by Universe Plastics engineers on the main features and types of cold runner molds:
Features of cold runner mold
1. Flow channel structure
The cold runner structure includes main channel, runner and gate. These are cool, unheated sections where the plastic cools and solidifies.
2. Demold processing
Each product produced by a cold runner mold usually contains condensed runner material that needs to be sheared off manually or mechanically.
3. Manufacturing cost
The design and manufacturing cost of cold runner molds is low, and it is suitable for small batch production or occasions where the recycling of runner materials is not high.
Cold runner mold application types
1. Two-plate cold runner mold
It consists of two parts: a movable mold and a fixed mold, and is suitable for the production of most plastic products. Lower manufacturing costs, easy design and maintenance, may increase scrap rates.
2. Three-plate cold runner mold
It consists of three parts: a movable mold, a fixed mold and a runner plate. The product and the runner material can be automatically separated during demoulding. The production efficiency is high, but the manufacturing and maintenance costs are high.
Advantages and disadvantages of cold runner mold
Advantages: simple structure, suitable for a variety of materials and products, low manufacturing, design and maintenance costs.
Disadvantages: The runner material needs to be removed manually or automatically, there is a lot of waste material, and the production efficiency is slow.
Summarize
Cold runner molds are widely used in the manufacturing of 2-plate molds and 3-plate mold types, and are suitable for the production needs of small and medium-sized batches of plastic products.
Dongguan Universe Plastic Factory has more than 15 years of experience in manufacturing injection molds. It has a professional team and processing equipment to provide high-quality and cost-effective injection mold manufacturing services.
If you have injection mold customization needs, please contact us to get the latest service quotation.
Injection mold type: hot runner mold
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