HYDRAULIC METAL CUTOFF MACHINE

      MODEL  Q43-1600

 

1. 4.     Operation and safety precautions

4.1   Operation

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

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

4.2   Safety precautions

4.2.1    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.

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

4.2.3    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.

4.2.4    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.

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

 

1. 5.     General troubles and shooting

Stop the machine when anything abnormal happens during the operation. Shoot the trouble before start the machine again. In the table below listed are some general troubles and causes and remedies to repair.

 

No        Troubles            Causes          Remedies

1   No system pressure       ①clogged overflow core  ①clean it, check core

when pump starts up     ②loose pressure handle      and spring

                                              ②tighten handle

 

2   No motion with pressure  ①magnet short-circuited  ①change magnet                 

②clogged valve core    ②clean change valve

3   Bad noise of pump      vacuum sucked          fill lead oil to

pump return oil port

4   ①Not able to return    ①improper set of     ①Reset the switch

after cutoff motion       proximity switch   

②Not able to do next   ②bad proximity switch ②change mandrel

cycle operation                                  of the switch

  

5   Not able to cut thick    too small a space     make it bigger

material                 between top & bottom

                         cutters

                         

6   Not able to cut thin     too big a space       make it smaller

material                 between top & bottom

cutters

 

7   ①Cutter makes way      ①clearance exists     ① retighten sleeve

②Material stuck       ② too big a space     ② reset the space

  between blades         between guides

③Non-smooth cutting   ③over-worn blades     ③repair or change

 

8   Speed down during      ①loose variation      ①reset the probe     

cutting operation       probe of pump

                       ②wrong variability    ②readjust it

                       ③overflow handle      ③tighten the hold

                       loose and s/pressure   down nuts

                       gets down

 

9   Oil dragging in        aged seal rings or     Change bad rings

piston rod             incorrect erection

 

10  Spoiled piston rod     ①aged dust ring        ①change with new one

                          ②sand or metal        ②clean the dust ring

                           chips in the ring

Practically, troubles would happen with a lot of mixed causes. It is necessary to watch out carefully and give full analysis to the causes before shooting.

 

1. 6.     Maintenance

It is imperative to a longer service time, higher efficiency and safe operation to operate the machine properly, respect the maintenance regulations and safety requirement. Operators should address to the following besides their familiar with machine’s structure and operation procedures.

6.1   Only well filtered oil can be filled in the tank. And always keep sufficient oil in it. High cleanness of hydraulic system is important to maintain a good machine.

6.2      Check and see before start up if all moving parts and change valves are in their home positions. The oil tank must be cleaned once every half year except for the first time that needs cleaning after use for 3 months. The oil inside can be used for once more after it is filtered again.

6.3     In winter when the oil temperature inside the tank goes down to below 10℃, measures to be taken to raise its temperature. And in summer when it rises above 70℃, you’d better to stop the machine.

6.4      Lubricate each lube point and fill lube oil in jerk fittings once at least every shift. Dismount the motor bearings for cleaning once every half a year. Remember to add to it Ca-base grease. Also check on the pressure gage every other half a year.

6.5      Non-skilled operator is prohibited to start the machine.

6.6      Operator ought to watch out the system working in regard to the pressure, shearing speed, wear of blades, friction rings and guides. Stop the machine at once whenever something abnormal or bad oil leaking happens. No “ill” machine is permitted to work more.

6.7      No repair or maintenance is allowed during operation. It is strictly prohibited to touch or feel any moving parts.

6.8      Only authorized personnel can adjust valves and/or pressure gage. Should the pressure gage be out of order, fix or replace it right away.

6.9      A regular maintenance regulation needs to be stipulated. It should cover change of seal rings at regular interval (Please see attached list), retightening bolts and screws and pipe fittings, cleaning oil tanks, piping, hydraulic elements and filtering or changing oil.

6.10   Disconnect the mains power supply when coming off work every day for some electric parts would be damaged with power on for a n over-long time.

 

 

1. 7.      Seal Ring List

 

Srl No	Code No	Descriptions	Qty	Mat’l	Used for
1		Yx type seal ring D180	3	polyurethane	cylinder
		Yx type seal ring D125	2	polyurethane	cylinder
2		Yx type seal ring d120	2	polyurethane	cylinder
		Yx type seal ring d80	2	polyurethane	cylinder
		Dust ring 120	1	polyurethane	cylinder
		Dust ring 80	1	polyurethane	cylinder
4	GB1235-76	O-ring 180x5.7	1	Rubber 1-4	cylinder
		O-ring 125x5.7	2	Rubber 1-4	cylinder
		O-ring 75x3.1	2	Rubber 1-4	cylinder
		O-ring 50x3.1	2	Rubber 1-4	cylinder
5	JB982-77	O-ring 40x3.1	4	Rubber 1-4	fitting
		O-ring 35x3.1	4	Rubber 1-4	fitting
		O-ring 30x3.1	2	Rubber 1-4	fitting
		O-ring 24x2.4	4	Rubber 1-4	fitting
		O-ring 11x1.9	2	Rubber 1-4	fitting
		Splitwasher 48	2		fitting
		Splitwasher 42			fitting