Custom Head Mold Components | Flat & Rectangular Core Pins and Sleeves

Product Overview

Special head rectangular core pins and sleeves are widely used in plastic injection moulds where anti-rotation, precise positioning, and corrosion resistance are required. Senlan Precision manufactures custom rectangular core pins and sleeves with anti-rust surface treatment, designed to ensure stable mould operation and long service life. All components are produced strictly according to customer drawings and mould specifications.

Key Features & Advantages

• Special head design for anti-rotation and secure positioning

• Rectangular profile for precise mould alignment

• Anti-rust surface treatment for extended service life

• High dimensional stability under continuous production

• Suitable for multi-cavity mould configurations

• Precision CNC machining for tight tolerances

• Custom / OEM manufacturing under Built-to-Print requirements

Applications / Industry Use

• Plastic bottle and packaging moulds

• Bottle cap and closure injection moulds

• Medical plastic consumable moulds

• Multi-cavity injection mould systems

• Mould tooling requiring corrosion-resistant core components

Mould Structure & Design Description

Rectangular core pins and sleeves are commonly applied in mould structures where rotational movement must be prevented. The special head design enhances positioning stability during mould opening and closing, while the rectangular geometry ensures accurate alignment within the mould cavity. Anti-rust treatments are applied to protect components from moisture, cleaning agents, and long-term storage environments, reducing the risk of corrosion-related mould failures.

Manufacturing Capability & CNC Machining

Senlan Precision is equipped with advanced CNC machining and finishing facilities to ensure consistency and precision in mould components.

Manufacturing capabilities include:

• CNC turning and milling

• Precision grinding for dimensional accuracy

• EDM machining for complex head and slot structures

• Surface treatment for corrosion resistance

• Strict tolerance control for core pins and sleeves

Key equipment includes high-precision CNC machines from MAKINO (Japan) and HARDINGE (USA), supporting reliable production of complex mould components.

Custom Development / OEM Cooperation Process

1. Customer submits drawings or mould specifications

2. Engineering review of structure, tolerance, and surface requirements

3. CNC machining and finishing processes

4. In-process dimensional inspection

5. Final quality inspection and verification

6. Export packing and shipment

All projects follow a Built-to-Print OEM / ODM cooperation model.

Quality Control & Export Experience

• Incoming raw material inspection

• In-process quality checks during machining

• Final dimensional and visual inspection

• Batch consistency verification for mould assemblies

• Extensive experience supplying mould components to international customers

Quality management follows standardized industrial manufacturing procedures.

Related Products

• Precision core pins for injection moulds

• Mould sleeves and bushings

• Anti-rotation mould components

• Multi-cavity mould inserts

• Custom CNC machined mould parts

FAQ – Technical & Purchasing

Q1: What is the advantage of a rectangular core pin design?
Rectangular designs prevent rotation and improve positioning stability inside the mould.

Q2: Are these parts standard or custom products?
All parts are custom-manufactured according to customer drawings and mould requirements.

Q3: What anti-rust treatments are available?
Surface treatments are selected based on application environment and customer requirements, ensuring corrosion resistance during use and storage.

Q4: What information is required for quotation?
Technical drawings, material requirements, tolerances, quantity, and application details.

Request a Quote

For technical evaluation and quotation, please provide your drawings, mould application details, and quantity requirements.
Our engineering team will review your request and respond with a professional solution.