+86 17727725162 jqj014950@topstarltd.com

Home / How does the mold temperature control system meet the demand for ultra-high flow rates?

How does the mold temperature control system meet the demand for ultra-high flow rates?

2026/07/06 By le zhan

For large injection-molded parts, such as automotive bumpers, refrigerator housings, air conditioner housings, washing machine panels, and industrial trash cans, large mold cavities, long runners, and uniform cooling over large areas are often required. While traditional mold temperature control system can maintain mold temperatures within the target range, their basic temperature control capabilities fall short as mold sizes increase, cooling circuits lengthen, or structures become more complex. The system must drive a higher heat-transfer fluid flow rate through the mold in a shorter time.

To meet these high-flow demands, Topstar has implemented two key upgrades to its mold temperature controllers:

  1. Adoption of multi-stage centrifugal pumps and reinforced piping;
  2. Installation of large-bore solenoid valves.

These two components work in tandem to achieve ultra-high flow rates, thereby shortening molding cycles, accelerating cooling, and enabling precise low-temperature control. Designed specifically for large-scale injection molding applications.

Multi-stage Centrifugal Pumps in Mold Temperature Control System

Precision multi-stage centrifugal pumps are the core components of Topstar’s ultra-high-flow mold temperature control systems. Unlike single-stage pumps, multi-stage pumps handle the high hydraulic resistance found in complex mold cooling circuits more effectively. Multi-stage centrifugal pumps are key to achieving ultra-high flow rates.

Design and Function of Multi-stage Centrifugal Pumps in Mold Temperature Controllers

Multi-stage centrifugal pumps consist of multiple impellers arranged in series. As the fluid passes through each impeller, the pressure increases incrementally. This cumulative pressure effect enables the pump to overcome the significant pressure drops caused by the long, slender, or tortuous cooling channels inside large injection molds. Topstar specifically configures its multi-stage centrifugal pumps to deliver the required head and flow rate, ensuring that the heat transfer fluid reaches every critical area of the mold at the intended flow velocity.

The stable, high-flow delivery capacity of multi-stage centrifugal pumps directly enables shorter molding cycles. By removing heat from the plastic quickly and evenly, the cooling system reduces curing time and shortens the injection molding machine’s cycle time.

Multi-stage Centrifugal Pumps in Mold Temperature Control System

Enhanced Piping Design

Topstar employs an enhanced piping design in both the internal circulation loops and external connections of its ultra-high-flow mold temperature controllers. This design allows the system to efficiently deliver and return the high flow rates generated by the multi-stage pumps, minimizing pressure loss while avoiding structural risks.

The Role of Enhanced Piping Design in Mold Temperature Control System

Enhanced piping is made from materials resistant to high pressure and high temperatures. Its key functions are as follows:

  1. Minimizing Pressure Drop:
    Reinforced piping features larger diameters and smoother inner walls, effectively reducing friction losses and ensuring that the pressure generated by the pumps is fully applied to the mold’s cooling channels.
  2. Preventing Leaks and Failures:
    High flow rates and high pressures place significant stress on piping and connections. Reinforced piping, combined with high-quality fittings and seals, effectively prevents leaks and maintains system efficiency.
  3. Enhanced Durability:
    The materials used in reinforced tubing are selected for their excellent resistance to corrosion, thermal expansion, and mechanical stress, thereby ensuring a long service life for the mold temperature control system.

The use of reinforced tubing ensures that high-capacity multi-stage centrifugal pumps operate at optimal efficiency, resulting in faster, more uniform cooling within the mold and ultimately shortening the molding cycle.

Enhanced Piping Design

Large-Bore Solenoid Valves in Mold Temperature Control System

Achieving ultra-high flow rates is not just about delivering large volumes of fluid, but also about precisely controlling the flow rate—especially during the cooling phase. Topstar incorporates large-bore solenoid valves in its ultra-high-flow mold temperature controllers primarily to achieve faster cooling speeds and precise low-temperature control.

H3: Functions and Advantages of Large-Bore Solenoid Valves

A solenoid valve is a type of valve that uses electromagnetic force to control fluid flow. In ultra-high-flow mold temperature control systems, large-bore solenoid valves offer the following advantages:

  1. Faster Cooling Response:
    The large-bore design allows a greater volume of cooling medium to pass through rapidly when the valve is open. The rapid injection of cooler fluid into the mold’s cooling channels significantly accelerates heat dissipation.
  2. Precise Low-Temperature Control: When combined with PID control algorithms, large-bore solenoid valves can adjust their opening based on real-time temperature feedback. This approach enables fine-tuning of the cooling rate, preventing thermal shock while ensuring uniform temperature distribution across the mold surface.
  3. Enhanced Durability and Reliability:
    Large-bore solenoid valves are specifically designed to handle high-flow and high-pressure operating conditions, offering exceptional durability. Their robust construction ensures a long service life even during continuous operation in harsh industrial environments.
Large-Bore Solenoid Valves in Mold Temperature Control System

Effortless Application in Large-Part Injection Molding

Thanks to the synergistic interaction of multi-stage centrifugal pumps, reinforced piping, and large-bore solenoid valves, Topstar’s ultra-high-flow mold temperature controllers can effortlessly produce large injection-molded parts, such as automotive bumpers, refrigerator/air conditioner housings, washing machine panels, and trash cans. In addition to the applications mentioned above, any injection molding process involving large molds, thick-walled structures, or requiring shorter molding cycles can benefit from the performance advantages of high-flow mold temperature control systems.

Designed Specifically for Ultra-High-Flow Requirements

The multi-stage centrifugal pumps and reinforced piping in the ultra-high-flow version of the mold temperature controller ensure powerful circulation capacity. At the same time, the large-bore solenoid valves enable faster cooling rates and precise low-temperature control. These two technologies enable the system to meet the demanding requirements of large-scale injection molding processes. This also makes the equipment widely applicable for the injection molding of products such as automotive bumpers, refrigerator and air conditioner housings, washing machine panels, and trash cans.

 

 

Prev: How does the T1 Cartesian injection robot meet comprehensiverequirements for speed, precision, and payload?

Next: Not Next

TRENDING POSTS

HOT TOPIC

Get A Quick Quote