Common faults and repairs of Hydraulic deep drawing press for kitchenware

     Hydraulic press is a machine that we can use every day. It is divided into: four-column hydraulic press, single-arm hydraulic press, multi-function hydraulic press, frame hydraulic press, etc.; we usually use pots, bowls, ladles, basins, etc.

hydraulic deep drawing press for kitchenware is also very troublesome to repair. Common problems include the following:

 

Abnormal movements

 

   The general actions are: slow down, quick down, pressure maintaining, pressure relief, pressurization, ejection, ejection, static, return stroke (the master cylinder has no rod cavity, which is cavity A, the rod cavity is cavity B, and the ejection cylinder has a rod) Cavity C ejects rodless cavity D)

 

1. No slow down: During normal slow down, the back pressure is adjusted to 5~10 MPa. If it is too high, the system will easily heat up. The B cavity safety relief valve is adjusted to 15 MPa. If it is too small, it will easily slide down. If it is too high, it will easily suffocate when the plug-in fails. Pressure blasting tube such as BP1 has no pressure above This method can be used to rule out that BP1 has pressure and BP2 has no pressure. It is necessary to rule out that the safety relief valve in the upper chamber of the master cylinder does not leak. It is ruled out that the filling valve is stuck in the open state and leaks. Both BP1 and BP2 have pressure and do not slow down the upper chamber of the master cylinder. The oil inlet valve is not opened normally to supply oil.

 

2. No quick release: The upper four columns, beams, and dust boots of the machine are improperly adjusted or too tight or the bolts are improperly adjusted. Check the secondary support valve, quick-discharge plug-in, and this group of solenoid valves. Check whether the filling valve absorbs oil normally;

 

3. Pressure relief: The normal pressure relief pressure is generally adjusted to 3~5 MPa and takes 2~3 seconds. Improper adjustment of the two will cause abnormal noise, vibration and mechanical failure, which will affect the service life of the whole machine. When the pressure cannot be released, abnormal sound will occur. Attention should be paid to the proper electrical signal of the liquid-filled valve, low-pressure system and solenoid valve.

 

4. Pressure maintenance: If the main cylinder does not maintain pressure, there are generally four external leaks. You can observe the internal leakage of the filling valve. Check the flow of oil from the main cylinder to the rod cavity. Continue to pressurize and open the rod cavity port to see if there is continuous outflow. Judge the insertion. Valve check valve leakage The above four points are easier to eliminate when the pressure is not maintained and the leakage is slow. Careful observation is required to eliminate the leakage.

 

  Dongguan Shengshi Weiye Machinery Technology Co., Ltd. specializes in the production of Forging Press, Deep Drawing Hydraulic Press, Gravity Casting Machine, Four-column Servo Press, C Type Pneumatic Press and other machines. Friends in need are welcome to pay attention and learn more.