Technical sharing: The "power core" of the rubber injection molding machine-analysis of the clamping cylinder.

Did you know? The clamping cylinder is the "hidden champion" of the rubber injection machine!

As a key component to ensure the tight closure of the mold, its performance directly affects the product accuracy and defect rate.

✨Three highlights:

1. Ultra-high pressure design (usually 15-30MPa) ensures stable clamping force

2. Precision sealing technology prevents hydraulic oil leakage

3. Intelligent pressure sensing system monitors the status in real time

Maintenance tips: Regularly replace hydraulic oil + check seals = extend life by 30%!

1. Structural characteristics and installation position of the clamping cylinder

The clamping cylinder is mainly composed of a hydraulic drive device, a piston and connecting parts, and is usually installed at a specific position between the moving plate and the fixed plate. Its structural design ensures that the piston can move accurately under the action of high-pressure oil, thereby achieving a firm locking of the mold.

2. Hydraulic drive principle of the clamping cylinder

The hydraulic system pushes the piston to produce linear displacement by pumping high-pressure oil to the cylinder cavity. This process ensures that the mold remains in a stable closed state during the injection stage by precisely controlling the oil pressure and flow. The pressure sensor of the hydraulic circuit monitors the clamping force in real time and adjusts the oil pump output through the feedback mechanism.

3. The impact mechanism of the clamping cylinder on product quality

The complete closure of the mold is the prerequisite for ensuring the dimensional accuracy and surface quality of the injection molded product. The continuous high pressure provided by the clamping cylinder can effectively prevent the leakage of the molten material and avoid deformation or defects in the product. At the same time, the stable clamping force can also reduce mold wear and extend the service life of the equipment.

4. Analysis of the correlation between the clamping system and production efficiency

An efficient clamping cylinder can significantly shorten the mold opening and closing cycle, and directly improve the production rhythm of the equipment by optimizing the hydraulic response time and piston movement speed. System failure or performance degradation will cause abnormal mold opening and closing, seriously affecting the throughput of the production line.

5. The relationship between cylinder maintenance and safe operation

Regularly checking the wear condition of the seals, the patency of the hydraulic pipeline and the movement trajectory of the piston are key measures to prevent oil leakage and mechanical jamming. A complete maintenance system can effectively reduce the equipment risk under high-pressure conditions and ensure the safety of operators.

From the above technical analysis, it can be seen that the design optimization and performance maintenance of the clamping cylinder are important links to improve the overall performance of the rubber injection molding machine.

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Posted by Alice Xiao

2025-07-14

Email: alice@hwayimachine.com