Standard Precision Simplified Small Gate Mold Base

This Standard Precision Simplified Small Gate Mold Base features a three-plate structure with a point gate, optimized from traditional fine-gate mold bases. Redundant auxiliary mechanisms are eliminated, simplifying the design while retaining core functions. Manufactured in a Chinese factory integrating R&D, production, and quality control, it is a trusted supplier in the plastic molding industry. The product is suitable for mass-produced plastic products with simple shapes and uniform wall thickness. Its high cost-effectiveness and stability have made it popular across various industries.

Key Features

1. Structural Features

- Three-plate structure: Composed of a fixed platen, a moving platen, and an ejector plate, with guide pillars and bushings for precise guidance; single-point injection with a point gate, short flow path, minimal residue, suitable for small products.

- Simplified Design: Eliminates complex auxiliary mechanisms, resulting in a simple structure and reduced manufacturing costs and complexity.

- Standard Precision: Dimensional accuracy ±0.05mm, surface roughness ≤Ra0.8μm, meeting the requirements of general plastic parts without additional processing.

2. Modular Standard Design: The Standard Precision Simplified Small Gate Mold Base adopts international standards such as LKM and HASCO, with common models such as 2020 and 2025, allowing for quick configuration and replacement; the modular design facilitates maintenance and extends service life.

3. Cooling System Design: A conventional cooling water circuit design offers moderate efficiency and a simple layout, meeting cooling requirements while facilitating processing and maintenance, reducing later costs.

4. Point Gate Advantages: Point gate diameter 0.5-2mm, minimal and easily removable marks, suitable for plastics with good flowability such as PP and ABS, ensuring product quality.

Applications

Standard Precision Simplified Small Gate Mold Base is suitable for mass production of plastic products such as small appliance housings and electronic buttons. It is compatible with products that are simple in shape, have uniform wall thickness, and do not have special appearance requirements, covering the needs of multiple industries.

Economic Advantages

1. Controllable Costs: High-precision mold bases save 30%-50% on material and processing costs, enhancing customer competitiveness.

2. Short Cycle Time: Manufacturing cycle of 2-4 weeks allows for rapid market response and shortens product launch time.

3. Easy Operation: Clear structure, simple assembly and maintenance, low skill requirements for operators, facilitating large-scale production.

Manufacturing Process

1. Design Stage: Determine the mold structure based on the parameters of the plastic product, select a suitable standard mold base, and design the cavity and core using software such as UG and Pro/E, taking into account key process factors.

2. Material Selection

The Standard Precision Simplified Small Gate Mold Base uses carbon structural steel such as 45 steel. Guide pillars and bushings are made of wear-resistant steel. The cavity and core are made of pre-hardened mold steel such as P20 (HRC30-35). Standard parts are sourced from specialized manufacturers.

3. Processing Flow

- Rough Machining: Rough machining of the mold plate and cavity, leaving a 0.5-1mm allowance.

- Finish Machining: CNC machining of the cavity, wire cutting of complex parts, and simultaneous drilling and tapping.

- Heat Treatment: Tempering of the cavity and core to HRC30-35 to improve wear resistance.

- Surface Treatment: Polishing of the cavity to Ra0.8μm.

4. Assembly and Debugging

Assemble the standard parts and cavity/core, install them on the injection molding machine for trial molding and parameter adjustment. Adjust the cavity based on the trial molding results and resolve common defects.

Development Trends

1. Standardization and Modularization: Improve standardization to achieve rapid configuration manufacturing and shorten delivery cycles.

2. Intelligent Manufacturing: Combining digital automation technology to improve processing accuracy and efficiency.

3. High-Efficiency Cooling: Optimized water channel layout to improve cooling efficiency while controlling costs.

4. Lightweight and Long-Lasting: Optimized structure and materials to reduce weight, improve wear resistance, and extend service life.

Frequently Asked Questions

Q1: What plastic products is the Standard Precision Simplified Small Gate Mold Base suitable for?

A1: Suitable for small to medium-sized plastic parts, such as appliance housings, electronic product buttons, daily necessities containers, stationery accessories, etc. Particularly suitable for mass-produced products with relatively simple shapes, uniform wall thickness, and low requirements for appearance.

Q2: What is the main difference between simplified mold bases and high-precision mold bases?

A2: The main differences lie in the complexity of the structure, the precision level, and the surface quality requirements. Simplified mold bases eliminate complex auxiliary mechanisms, adopt a standardized simple structure, control dimensional accuracy within ±0.05mm, and require a surface roughness of Ra0.8μm or less. The cost is typically 30%-50% lower than high-precision mold bases. 

Q3: What are the advantages of point gates?

A3: Point gates have a small diameter (usually 0.5-2mm), resulting in smaller gate marks that are easy to remove and do not affect the appearance of the product. The process is shorter, which is beneficial for the complete filling of small products, and is particularly suitable for plastic materials with good flowability such as PP, ABS, and PS.

Q4: How long is the mold manufacturing cycle?

A4: The manufacturing cycle for a Standard Precision Simplified Small Gate Mold Base is typically 2-4 weeks. Due to its simple structure and fewer processing steps, the manufacturing cycle can be shortened by 30%-50% compared to high-precision complex molds, enabling a rapid response to market demands.

Q5: How to choose the appropriate mold base specifications?

A5: Choosing the right mold base specifications requires considering factors such as the size of the product, the injection molding machine model, and production volume requirements. Common specifications include models such as 2020, 2025, 3030, and 4040. It is generally suitable for the product size to be within 80% of the mold cavity size. It is recommended to choose the mold base specifications based on the maximum external dimensions of the product plus an appropriate allowance.