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High-Precision Return Springs for Injection Molds

Premium-quality return springs engineered for optimal performance in injection mold applications, featuring superior durability, precision, and consistent operation throughout extended production cycles.
 
Our return springs are designed to meet the most demanding requirements of modern mold manufacturing.
 
  • ISO 9001:2015 Certified Manufacturing
  • No Minimum Order Quantities
  • Custom Specifications Available
  • Fast Lead Times Without Compromising Quality
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ISO 9001:2015 Certified Processes

ISO 13485: 2016 Medical Device

IATF 16949: 2016 Automotive

No Minimum Order Quantities

In-Process Inspection with CMM

Return Spring Overview

Return springs are essential components in injection mold design, providing the necessary force to return ejector plates to their original position after part ejection. At FECISION, we manufacture high-precision return springs using premium 6150 chrome vanadium alloy, ensuring optimal performance and longevity in demanding manufacturing environments.
 
Our return springs are engineered with precision machining and rigorous quality control to deliver consistent performance throughout thousands of molding cycles. The trapezoidal wire shape and closed, ground ends provide superior stability and load distribution compared to conventional springs, making them ideal for critical mold applications where reliability is paramount.
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Why Fecision Return Spring?

✔️ Unlike standard off-the-shelf components, FECISION return springs are manufactured to exacting specifications with tight tolerances, ensuring perfect fit and function in your mold design.
✔️ Our comprehensive range of sizes and strength ratings allows you to select the ideal spring for your specific application requirements.

Technical Specifications

Our return springs for injection molds are manufactured to meet or exceed industry standards, ensuring compatibility with all standard mold components and bases.
Each spring undergoes rigorous testing to verify performance characteristics and dimensional accuracy.
SpecificationDetails
Material6150 Chrome Vanadium Alloy
Strength RatingMedium Duty (Blue), Medium Heavy Duty (Red), Heavy Duty (Gold)
Surface FinishShot Peened, Corrosion-Resistant Coating
End ConditionClosed and Ground
Winding DirectionRight-Hand Wound
Free Length38mm to 305mm (Standard Sizes)
Operating Temperature-40°C to 200°C
Load Capacity Varies by Size and Rating
Compression RatioUp to 30% of Free Length
Tolerance±0.25mm on Length, ±0.13mm on Diameter
Fatigue Life1,000,000+ Cycles Under Rated Load
Contact us for tailored specifications to match your project needs.

Applications

Our return springs for injection molds are manufactured to meet or exceed industry standards, ensuring compatibility with all standard mold components and bases.
Each spring undergoes rigorous testing to verify performance characteristics and dimensional accuracy.

Ejector Plate Retraction

The primary application for return springs in injection molds is ejector plate retraction. Our precision-engineered springs provide the optimal force needed to return ejector plates to their home position after part ejection, ensuring consistent cycle-to-cycle operation. The balanced design prevents uneven pressure on the ejector system, reducing wear on pins and through holes while extending the operational life of your mold.

Three-Plate Mold Separation

In three-plate mold designs, return springs play a critical role in ensuring proper plate separation sequence. FECISION return springs provide the precise preload necessary to separate the A-Plate from the X1-Plate, maintaining consistent operation and preventing potential mold damage. Our springs are designed to deliver reliable performance even in high-speed molding operations.

Ejector Plate Retraction

The primary application for return springs in injection molds is ejector plate retraction. Our precision-engineered springs provide the optimal force needed to return ejector plates to their home position after part ejection, ensuring consistent cycle-to-cycle operation. The balanced design prevents uneven pressure on the ejector system, reducing wear on pins and through holes while extending the operational life of your mold.

Features and Benefits

The return spring we manufacture has excellent performance and can meet customers’ various technical requirements.

High-Precision Manufacturing

Our return springs are manufactured using state-of-the-art CNC equipment and precision grinding processes, ensuring dimensional accuracy and consistent performance. Each spring undergoes rigorous inspection to verify compliance with specifications, providing you with components you can rely on for critical mold functions.

Premium Materials

We exclusively use 6150 chrome vanadium alloy for our return springs, providing superior strength, elasticity, and fatigue resistance compared to standard spring materials. This premium material ensures consistent performance even under demanding conditions, reducing the risk of spring failure and associated mold damage.

Fatigue-Resistant Design

The trapezoidal wire cross-section and shot-peened surface treatment significantly enhance fatigue resistance, allowing our springs to maintain their performance characteristics through millions of compression cycles. This extended service life reduces maintenance requirements and improves overall mold reliability.

Corrosion Protection

All FECISION return springs feature a specialized corrosion-resistant coating that protects against moisture, chemicals, and other environmental factors that can compromise spring performance. This protection is particularly valuable in applications involving corrosive materials or high-humidity environments.

Standardized Dimensions

Our return springs are manufactured to industry-standard dimensions, ensuring compatibility with existing mold designs and components. This standardization simplifies installation, maintenance, and replacement, reducing downtime and associated costs.v

Customization Options

Beyond our standard offerings, FECISION provides custom return spring solutions tailored to your specific application requirements. Our engineering team can design and manufacture springs with custom dimensions, load ratings, and material specifications to address unique challenges in your mold design.

Fecision Mold Component Tooling Network

In response to different service types and diverse business needs, we have deployed suppliers with different manufacturing capabilities.

Why Fecision for Mold Components?

Precision and Accuracy

Using state-of-the-art CNC machining, EDM, and other advanced manufacturing techniques, Fecision ensures all mold components meet tight tolerances and high-quality standards.

Customization

Fecision understands the unique needs of each project. Our team works closely with customers to provide tailored solutions, ensuring that each component fits perfectly within the target mold system.

Rapid Prototyping

Fecision offers rapid prototyping for mold components, enabling customers to test and refine designs quickly before moving into full production.

End-to-End Services

From initial design and DFM (Design for Manufacturability) analysis to final mold assembly and testing, Fecision handles every aspect of the mold component manufacturing process.

Process for Manufacturing Mold Components

The process of making a mold component involves several stages, from design to manufacturing and finishing.
The specific steps can vary depending on the type of mold component being created, but the general steps remain consistent across most types of mold components.
 

Manufacturability Evaluation

The initial step involves assessing the manufacturablity of the mold component. If it's deemed feasible, we proceed with production immediately. If not, we will provide a detailed DFM (Design for Manufacturability) report to the customer. If necessary, mold flow analysis is performed to simulate the flow of molten material within the mold.

Material Selection

Next, choose the right material for mold parts. Common materials for mold components include steel alloys, aluminum, stainless steel, specialty alloys, etc. If needed, a prototype may be made using rapid prototyping techniques (e.g., 3D printing, CNC machining) to test the design for fit, function, and manufacturability.

Mold Components Manufacturing

Once the design and materials are finalized, the mold component undergoes CNC machining. If required, the mold component may undergo heat treatment, depending on the material and intended application. For certain components, surface hardening methods such as nitriding or carburizing are applied to increase wear resistance.

Shipping

For molds with multiple components, such as multi-cavity molds or molds with inserts, the individual components are carefully assembled into the final mold system. Once our engineers confirm the product meets all requirements, it will be shipped. We maintain ongoing communication to ensure the customer is fully satisfied with the product they receive.

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Industry Expertise at Fecision

Medical

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Plastic Part Production

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Metal Part Production

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CNC Machining

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