Product Overview
This 1×8 cavity custom plastic shaft injection mold is professionally designed for mass production of high-precision POM plastic shaft parts. Equipped with a side gate system and large sprue design, this mold ensures stable plastic filling, balanced flow distribution, and excellent dimensional consistency for tiny and slender plastic shaft components. The mold core and cavity adopt 2344 mold steel with hardness reaching HRC 48–52, providing high wear resistance and long mold service life. The surface finish applies SPI-B2 mold texture, delivering uniform and smooth part appearance for mechanical assembly usage.
Optimized for POM material characteristics, this multi-cavity injection mold effectively solves common POM molding issues such as shrinkage, short shot, and warpage. It is an ideal mass-production mold for standard and customized miniature plastic shafts used in automotive, home appliances, electronics, and precision mechanical equipment.
Key Mold Specifications
Mold Cavity: 1×8 Cavity (8 parts per shot)
Mold Material: 2344 Hot Work Mold Steel
Mold Hardness: HRC 48–52 after heat treatment
Gate Type: Side Gate (edge gate)
Sprue Design: Large-diameter sprue for fast and stable POM feeding
Mold Surface Texture: SPI-B2 standard mold finish
Molded Material: POM (Acetal / Polyoxymethylene)
Molded Product: Custom precision plastic shaft, pin, and small mechanical core parts
Mold Precision: High dimensional stability, low tolerance deviation
Production Mode: Mass continuous injection molding
Mold Design & Structural Advantages
1. 1×8 Multi-Cavity High-Efficiency Structure
The 8-cavity layout greatly improves production output, perfectly suitable for large-volume plastic shaft orders. Each cavity adopts an independent balanced flow path to ensure consistent filling speed, identical weight, and uniform dimension of every molded shaft part.
2. Side Gate Design for Shaft Parts
Side gate feeding is the most reliable solution for slender shaft products. It avoids center gate welding lines, reduces deformation, and ensures straightness of long thin plastic shafts. The gate position is optimized for easy cutting and automatic separation during production.
3. Large Sprue for Stable POM Molding
POM material features fast cooling and high shrinkage. The large sprue design provides sufficient material reserve and stable pressure holding, effectively preventing shrinkage pits, voids, and insufficient filling on POM shaft surfaces.
4. High Hardness 2344 Steel Mold Base
After precise heat treatment, the 2344 mold steel reaches HRC 48–52 high hardness, offering strong wear resistance, compression resistance, and deformation resistance. The mold can sustain long-term high-frequency injection cycles and maintain stable precision for years.
5. Standard SPI-B2 Mold Texture
SPI-B2 surface treatment creates a uniform fine matte finish on POM parts, improving wear resistance, anti-slip performance, and overall appearance quality while covering minor molding traces.
Application Scope
This custom plastic shaft injection mold is widely used for producing precision POM shafts, plastic pins, rotating cores, and small mechanical accessories for household appliances, automotive interiors, electronic devices, office equipment, and precision automation machinery.
FAQ
Q1: Why choose side gate for POM plastic shaft mold?A1: Side gate feeding avoids welding lines, reduces shaft bending and warpage, ensures excellent straightness of slender POM shafts, and allows clean gate breaking for mass production.
Q2: What is the advantage of the large sprue design for POM molding?A2: POM cools quickly and shrinks obviously. The large sprue provides stable pressure holding and material supplementation, effectively eliminating shrinkage holes, dents, and incomplete filling on tiny shaft parts.
Q3: How long is the service life of this 2344 HRC48-52 mold?A3: With professional heat treatment and HRC 48–52 high hardness, the 2344 steel mold supports long-term stable mass production and has strong wear resistance for continuous POM injection cycles.
Q4: What is SPI-B2 texture used for?A4: SPI-B2 is a standard fine matte mold finish. It provides uniform surface texture, improves part touch feeling, increases wear resistance, and hides minor molding defects for mechanical plastic parts.
Q5: Can this mold customize different shaft sizes?A5: Yes. This is a fully customizable plastic shaft mold. We can adjust cavity size, shaft length, diameter tolerance, gate position, and surface texture according to customer drawings and samples.
Q6: Is 8-cavity structure suitable for small-batch orders?A6: The 1×8 cavity design is mainly optimized for mass production. For small-batch prototyping, we can adjust cavity numbers or make single-cavity trial molds to save cost.
