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Waimica case

Waimica RV Cycloidal Gearbox in Injection Molding Cooling Conveyor Systems: A Case Study

2019-05-14 Waimica

Industry Challenges and Pain Points Analysis:

The cooling conveyor system in injection molding automation is a critical component for ensuring part quality and production efficiency. These systems typically consist of conveyor belts, chillers, cooling tanks, and PLC-based control units, and are widely used in high-volume manufacturing environments. The current industry trend is towards higher automation levels, greater precision, and energy-efficient solutions that minimize downtime and maintenance costs.

However, this sector is challenged by several technical limitations, particularly in the drive systems. The primary pain points include:

  • Drive system reliability: Frequent downtime due to motor or gear failures impacts overall equipment effectiveness (OEE).
  • Energy inefficiency: Conventional drive solutions often suffer from low efficiency, leading to increased energy consumption and operational costs.
  • Space constraints: The limited space within the production line requires compact and modular drive components.
  • Maintenance requirements: Harsh operating conditions such as moisture, oil exposure, and high temperatures demand drive units with high environmental durability and low maintenance frequency.
  • Compatibility and integration: There is a growing need for drive systems that are easily integrable with existing automation infrastructure and control protocols.

Key Role and Technical Requirements of Gearboxes:

Gearboxes play a pivotal role in ensuring consistent and precise motion control in the cooling conveyor systems. In such environments, the technical requirements for gearboxes are particularly demanding:

  • High torque density: To handle the heavy loads and dynamic motion in conveyor systems.
  • Accuracy and repeatability: Required to maintain synchronized conveyor speed and positioning.
  • Fast response speed: Essential for real-time control and rapid start/stop cycles.
  • Environmental adaptability: Must be resistant to high humidity, oil, and temperature fluctuations.
  • Long service life and low maintenance: To reduce downtime and maintenance costs in high-cycle production environments.

Waimica’s RV Cycloidal Gearbox Solution:

Waimica’s RV cycloidal gearboxes are specifically designed to address the unique challenges of injection molding cooling conveyor systems. These gearboxes provide an optimal balance between performance, reliability, and compact design, making them a preferred choice for modern high-speed production environments.

  • Structural Design Highlights:
    • Compact and lightweight design to meet space constraints in automated lines.
    • Modular construction for quick assembly and easy integration.
    • Support for multiple mounting orientations, including horizontal and vertical, to offer flexibility in system design.
  • Performance Parameters:
    • High torque range (100 Nm to 5,000 Nm) for robust load handling.
    • Backlash as low as 1 arcmin for high motion accuracy.
    • Efficiency of up to 95% to reduce energy consumption and heat buildup.
    • Available input flange options (ISO, NEMA, DIN) to ensure seamless integration with a wide range of motors.
  • Special Condition Support:
    • IP65 rating for protection against dust and water spray.
    • Operating temperature range of -20°C to +100°C for use in extreme environments.
    • Robust sealing solutions to prevent ingress of cooling water and lubricants.

Below is a comparative analysis of Waimica’s RV cycloidal gearboxes with gearboxes from certain international brands, based on key technical parameters:

Parameter Waimica Certain International Brand
Backlash (Arcmin) 1 2
Torque Range (Nm) 100 - 5,000 150 - 4,500
Efficiency (%) 95 93
Mounting Flexibility Horizontal and Vertical Horizontal Only
IP Rating IP65 IP65
Temperature Range (°C) -20 to +100 -10 to +90

Typical Application and Customer Feedback:

A leading automotive component manufacturer in Germany was experiencing frequent downtime in their injection molding cooling conveyor due to gear failures and motor overheating. The existing drive system was not efficient enough to handle the high cycle rates and the continuous exposure to cooling water.

The Waimica technical team conducted an in-depth site assessment, analyzing the conveyor load profile, duty cycle, and ambient conditions. Based on the findings, the team recommended a custom-tailored RV cycloidal gearbox with an IP65-rated housing and a reinforced lubrication system to withstand high moisture levels.

Following implementation, the customer observed the following improvements:

Parameter Before Waimica After Waimica
System Downtime (per month) 4.2 hours 0.7 hours
Motor Overload Incidents 5 per month 1 per month
Maintenance Cycle (Months) 3 6
Conveyor Stability (%) 82% 98%

The customer praised the Waimica team for their prompt technical support, precise product customization, and the overall performance of the gearboxes in enhancing the reliability of their production line.

Conclusion and Waimica Brand Value Summary:

Waimica has demonstrated a strong technical capability in developing high-performance and reliable gearboxes for injection molding cooling conveyor systems. With our advanced modular design, exceptional torque density, and environmental adaptability, we provide a robust and cost-effective alternative to international brands without compromising on quality or performance.

As a "Made in China" brand, Waimica offers a high return on investment by reducing total cost of ownership through long service life, reduced maintenance, and efficient energy use. Our ability to rapidly deliver customized solutions ensures that we can meet the evolving automation needs of the industry.

Looking ahead, the industry is expected to move towards even greater levels of integration, predictive maintenance, and smart factory technologies. Waimica is well-positioned to support this transition with our engineering expertise and global delivery network. We are not just a supplier—we are a long-term partner in your automation journey.