Injection Molding Oil Circuit Monitoring

Injection Molding Oil Circuit Monitoring

Challenge Overview

In the machine building and automation industry, injection molding is a critical process used to manufacture a vast array of plastic parts and products. The efficiency and quality of this process rely heavily on the precise control of hydraulic and pneumatic systems. A key challenge is monitoring and maintaining the correct pressure in the oil circuits that drive the injection molding machinery. Inconsistent or incorrect pressure levels can lead to defects in the molded products, increased wear and tear on machinery, and higher operational costs due to downtime and maintenance.

Enhance Injection Molding Efficiency

Discover how pressure transmitters improve system efficiency.


Implementing an advanced pressure monitoring system using high-precision pressure transmitters provides a robust solution to this challenge. These devices continuously measure the pressure within the oil circuits, ensuring that it stays within the optimal range for efficient and high-quality injection molding. By integrating pressure transmitters with a centralized monitoring system, manufacturers can achieve real-time insights and automated control over the pressure parameters, leading to enhanced productivity and product quality.


Consider a manufacturer producing plastic components for the automotive industry. The injection molding machines are required to operate at specific pressures to ensure the durability and precision of the components. By installing pressure transmitters at strategic points within the oil circuits, the manufacturer can monitor the pressure levels continuously. Any deviations from the set parameters are immediately detected and corrected, preventing defective parts from being produced and reducing machine downtime for maintenance.

The Role of the Pressure Transmitter in Injection Molding Oil Circuit Monitoring

Pressure transmitters play a crucial role in maintaining the integrity of the injection molding process. These devices convert the physical pressure exerted by the oil within the circuit into an electrical signal, which is then analyzed and used to control the machinery. This continuous feedback loop ensures that the pressure remains within the specified range, facilitating smooth and uninterrupted operation of the injection molding machines.

How the Pressure Transmitter Works in Injection Molding Oil Circuit Monitoring

1Installation: Pressure transmitters are installed at critical points in the oil circuit of the injection molding machine where pressure needs to be monitored.

2Pressure Sensing: The diaphragm within the transmitter senses the pressure of the oil. Any change in pressure causes a deformation in the diaphragm.

3Signal Conversion: The deformation is converted into an electrical signal by the strain gauge or piezoelectric sensor attached to the diaphragm.

4Signal Processing: The electrical signal is amplified and processed to filter out any noise, ensuring accurate pressure readings.

5Data Transmission: The processed signal is transmitted to the central control system of the injection molding machine.

6Monitoring and Control: The central control system continuously monitors the pressure readings. If the pressure deviates from the set parameters, the system automatically adjusts the machine’s operation to bring the pressure back to the optimal range.

7Alerts and Maintenance: In case of significant deviations, the system generates alerts for the maintenance team to investigate and resolve potential issues promptly.

Injection Molding Oil Circuit Monitoring



Injection molding is a precision-driven process where maintaining the correct oil circuit pressure is crucial. By integrating high-precision pressure transmitters into the hydraulic and pneumatic systems, manufacturers can achieve real-time monitoring and control, ensuring optimal performance and quality. This solution not only enhances efficiency and product quality but also significantly reduces operational costs and improves overall safety in the manufacturing environment. Adopting such advanced monitoring technologies is a strategic move towards smarter and more reliable machine automation in the industry.

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