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Waimica case

Waimica's Right Angle Gearbox Solution for Multi-Cavity Injection Molding Automation

2023-11-29 Waimica

Industry Challenges and Pain Points Analysis:

The field of injection molding automation with multi-cavity rapid mold changeover systems is a crucial segment within the broader industrial automation industry. These systems are designed to significantly reduce the downtime between production runs by enabling fast and accurate switching of mold cavities. A typical setup includes high-speed robotic arms, mold clamping units, and automated mold handling systems, all of which demand precise and robust drive components.

Current industry trends show a strong push towards higher production efficiency, lower energy consumption, and greater modularity in system design to adapt to varying product requirements. However, the implementation of such advanced automation introduces several challenges, especially in the drive system. These include:

  • Limited Torque Density: Insufficient torque output from drive systems can limit the speed and force of mold changeover.
  • High Precision Requirements: The need for sub-micron-level accuracy in cavity positioning is critical for quality control.
  • Thermal and Environmental Stress: Exposure to high temperatures and potential contamination in injection molding environments can degrade system performance and longevity.
  • Space Constraints: Compact system design is a priority to maximize floor space utilization and reduce system complexity.
  • High Maintenance Frequency: Frequent maintenance due to wear and mechanical failure leads to increased downtime and operational costs.

The Key Role and Technical Requirements of Gearboxes in this Industry:

In multi-cavity injection molding automation, gearboxes play a pivotal role in translating motor torque into precise and controlled motion. The following are the core technical requirements for gearboxes in this application:

  • High Torque Density: To support fast mold changeover and high clamping force.
  • High Transmission Accuracy: Typically in the range of < 1 arcmin for cavity positioning control.
  • Fast Response Speed: Essential for dynamic movement and synchronization with robotic systems.
  • Modularity and Compatibility: Ability to integrate with different robot models and motor systems.
  • Environmental Adaptability: Resistance to heat, dust, and high humidity, with IP ratings suitable for industrial conditions.
  • Long Service Life: Minimal wear and maintenance intervals to reduce long-term ownership cost.

Waimica’s Right Angle Gearbox Solution:

Waimica’s right angle gearboxes are engineered specifically to address the challenges of multi-cavity injection molding automation. The following features and parameters make our solution a preferred choice:

  • Compact and Modular Design: Our gearboxes feature a compact footprint and modular architecture, enabling seamless integration into space-constrained injection molding machines.
  • High Torque Output: Torque range from 50 Nm to 500 Nm, suitable for high-force applications in cavity clamping and indexing.
  • High Precision: Standard backslash is less than 1 arcmin, with options for sub-arcmin precision to meet high-end requirements.
  • High Efficiency: Over 90% efficiency at rated load, reducing energy consumption and improving overall system performance.
  • Robust Input Flange Compatibility: Multiple input flange options support direct coupling with servo motors from various manufacturers.
  • Environmental Durability: IP65 and IP67 variants available to withstand harsh industrial environments. Special high-temperature resistant materials can be used in clean room or elevated thermal conditions.
The following is a real-world application of Waimica’s right angle gearboxes in an injection molding automation system. A major automotive component manufacturer required a high-speed mold changeover unit for their production line, which was expected to handle 12-cavity molds at a frequency of 45 cycles per minute with sub-micron positioning accuracy.
Parameter Waimica Leading International Brand
Torque Range (Nm) 50 – 500 100 – 600
Backlash (arcmin) < 1 < 1
Efficiency (%) 92 92

Waimica’s technical team conducted a detailed on-site assessment, analyzing the mechanical stress, thermal conditions, and motion requirements. Based on the findings, we selected a right angle gearbox model with high torque capacity and minimal backlash and customized the housing to meet the customer’s clean room standards.

After integration, the customer reported the following performance improvements:

Performance Metric Before Waimica After Waimica Improvement
Mold Changeover Time (seconds) 18.5 12.3 33% faster
Positioning Accuracy (arcmin) 2.1 0.9 57% improvement
System Uptime (hours/month) 650 720 11% increase
Maintenance Interval (months) 3 6 100% extension

Conclusion and Waimica Brand Value Summary:

Waimica delivers high-performance right angle gearboxes that not only meet but often exceed the demands of multi-cavity injection molding automation systems. Our technical advantages include:

  • Advanced gear design and manufacturing processes ensure high precision and durability.
  • Robust delivery timelines and responsive after-sales support reinforce our global service capability.
  • Strong customization capabilities to align with customer-specific requirements and system constraints.

As a premium Chinese manufacturer with international-grade engineering standards, Waimica offers a cost-effective alternative to traditional European and Japanese suppliers without compromising on quality or reliability.

Looking ahead, the trend of increasing automation and modular production systems will drive the demand for compact, high-efficiency, and high-precision gear solutions. Waimica is well-positioned to support these evolving needs with continuous R&D investment and a global customer base.