Problems caused by heating of hydraulic system of crimping machine

Time of issue:

2021-11-10

Problems caused by heating of hydraulic system of crimping machine The oil pump is installed in the oil tank and immersed in the hydraulic oil to achieve the purpose of scientific heat dissipation and mute design. The oil pump is driven by the motor to output hydraulic oil and push the plunger in the withholding cylinder to move, causing the mold base to shrink radially, realizing the mold to the hose joint cover Squeeze. When the shrinkage reaches the preset value of the micrometer, the extrusion stops automatically. After the electromagnetic reversing valve changes the direction, the plunger in the cylinder moves in the opposite direction, the mold opens, and the hose is crimped. In the hydraulic system of the crimping machine, due to the different flow rates of the hydraulic oil in the flow process, there is a certain internal friction inside the liquid, and there is also friction between the liquid and the inner wall of the pipeline. These are the reasons for the increase in the temperature of the hydraulic oil. . Heat generation is an inherent feature of hydraulic systems, which cannot be eradicated and can only be reduced as much as possible. The increase in oil temperature of the hydraulic system will increase internal and external leakage and reduce its mechanical efficiency. An increase in temperature will cause the internal expansion of the hydraulic oil, resulting in an increase in compressibility and a weakening of the output power, so that the control action cannot be transmitted well. The long-term high temperature of the hydraulic system will accelerate the aging of the internal seals of the machine, and system leakage caused by the aging and damage of the internal seals is easy to occur, resulting in the power loss of the crimping machine, and the crimping pressure is greatly reduced. The motor does not rotate after the tube press is energized 1. Check whether the power switch is off. 2. Check whether the contactor is closed. 3. Check whether the fuse is blown. 4. Check whether the thermal relay is disconnected.

The increase in oil temperature of the hydraulic system will increase internal and external leakage and reduce its mechanical efficiency.

An increase in temperature will cause the internal expansion of the hydraulic oil, resulting in an increase in compressibility and a weakening of the output power, so that the control action cannot be transmitted well.

The long-term high temperature of the hydraulic system will accelerate the aging of the internal seals of the machine, and system leakage caused by the aging and damage of the internal seals is easy to occur, resulting in the power loss of the crimping machine, and the crimping pressure is greatly reduced.

The motor does not rotate after the tube press is energized

1. Check whether the power switch is off.

2. Check whether the contactor is closed.

3. Check whether the fuse is blown.

4. Check whether the thermal relay is disconnected.

Keyword:

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How to use and maintain the hose crimping machine?

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How to use and maintain the hose crimping machine?

Which crimping machine is of better quality?