Q43-1000型剪刀机

HYDRAULIC METAL CUTOFF MACHINE

MODEL :Q43-1000

 

1. 4.     Installation & Test

4.1   Installation

4.1.1    Foundation should be done as per the foundation drawing prior to the arrival of the machine. It is not as important for the machine produces no heavy vibration in operation. A floor of concrete 189mm deep is just OK. In outdoors, a ceiling is necessary to safeguard the electric apparatus.

4.1.2    Place the machine into position as per the foundation drawing.  Level the machine. And then place the tank on the foundation. Clean oil pipes and fittings. While the oil pipes are laid according to the hydraulic schematics, please not forget put in seal rings.

4.1.3    Hook up the wires according to the wiring diagram and also secure all connections.

4.1.4    Make sure all mechanical, electrical and hydraulic connections and joints correct and reliable. Now Hook in the mains power source into the power cabinet.

 

4.2   Adjustment & test

6.2.1 Preparation work before test

6.2.1.1  Double check and make sure all connections are correct and secured according to the electric schematics. No loose connections are allowed.

6.2.1.2         Fill in the oil tank with clean filtered oil. The amount would be 80% of the total volume approximately. YB-N46# to be recommended for use in summer while N32# for winter.

6.2.1.3         Fill some lead oil into the oil port of the high pressure pump. And lube all lube points with 20# machine oil.

6.2.1.4         Operators need to read this manual carefully and have an overall knowledge of structure and functions of each unit. They will be prohibited to start the machine unless they have got known with the working principle of electrical and hydraulic systems.

6.2.2  No load test

6.2.2.1 Switch on the mains power and unscrew the overflow valve handle to let the system overflow safely.

6.2.2.2 Switch on the mains power and start the motor. And then stop it right away to see if it is running in same direction as indicated in the label on the pump.

6.2.2.3         Start pump for no-load operation for 3-5 minutes and make sure everything is OK. Now set the pressure for overflow valve so that a stable and reliable overflow is ensured under a system pressure 8MPa. A lower pressure is preferred during test.

6.2.2.4         Now do in STEP mode first shearing, pressing and return operation as hydraulic and electric working principles.

 

4.3   On-load test

4.3.1     Get ready the material for cutoff test. Gradually set the system pressure to 21MPa. Tighten the hold-down nut on the overflow valve handle.

4.3.2    Put a few metals with different specs at varied positions on the cutter in order. Now do the shearing operation.

4.4   Adjustment of cutoff stroke, system pressure and clearance between blades

4.4.1    Adjust the cutoff stroke

On the work side of the machine, there are proximity switches that are set already before ex-works. To readjust, just move the 2 proximity switches so that the cylinder stroke can be reset and it can do more within a same time. An optimum distance between the switch probe and the cutter rack sensor should be 3-5mm.

4.4.2    Reset the system pressure

Turning the overflow valve handle can alter the system pressure. It is up in clockwise while down in counter-clockwise. A lower pressure is enough for cutting off light and thin material. And high pressure for thick material. However the max will not be above 24MPa.

4.4.3    Readjustment of blade clearance

Normally wear of guide board, friction ring and bushes will make blade clearance become bigger. It’s necessary to re-adjust according to different materials to be cutoff. Regularly we recommend a clearance of 0.20 – 0,60mm that would suit all materials. For thin metals, take a smaller clearance.

 

1. 5.     Operation and safety precautions

5.1   Operation

5.1.1    In STEP mode, press the button one time, it performs one step operation only.

5.1.2    In AUTO mode, it will complete all steps automatically until a full cycle, i.e. pressing → cutting off → open → return → next cycle.

5.2   Safety precautions

5.2.1    Material to be cutoff MUST be within the specs. With irregular waste material, pay attention that nothing is pressing against any part of the machine unexpectedly. Remove in time anything off from the platform and inside frames to avoid any damage to the machine. No chilled or brittle steel is allowed for this machine.

5.2.2    After a long service time, necessary to repair or sharpen cutter edge and even replace with new ones. Clearance between blades needs resetting.

5.2.3    It is prohibited to put hands or foot under the pressing board or between top and bottom cutters during operation. Prohibited too to remove things from the machine or do cleaning when the machine is running. Whenever anything should drop off to the machine, stop it immediately. No “ill” machine or over-load operation is permitted.

5.2.4    In case two or more people are working at the machine, a clear division of work with individual responsibility would be important to a safe operation.

5.2.5    Prohibited to handle at will with any parts, pump, valve or gages. Only skilled personnel can be authorized to do adjustment or repair.