Maintenance of water jet looms in various time periods
1. Daily inspection
Abnormal sound Is there an abnormal sound?
(1) Power main motor, blower motor
(2) Box-type frame on the yarn supply side and the power side
(3) Selvedge parts, opening parts, etc.
Temperature and smell Is there a burning smell of insulating materials?
(1) Power main motor, blower motor
(2) Electromagnetic brake
(3) Various parts in the control box
Yarn end treatment Is the number of rotations of the false-twisting spindle normal? Worn and insufficient tension of the spindle belt
Mechanical weft cutter Can the yarn be cut normally?
(1) The blade is not sharp, pressure, wear
(2) Insufficient movement of the weft cutter
Selvedge slack Is the state of the selvedge on both sides normal?
(1) The degree of deviation and wear of the planetary device timing
(2) Weft cutting timing
Weft dragging Are there any errors in weft catching?
(1) Scale adhesion in the nozzle, nozzle direction, and stabilizer failure
(2) Dislocation of the yarn guide
2. Check once a week
Winding wrinkles Do winding wrinkles occur?
(Special attention should be paid to some specific fabrics)
(1) Sliding state of brake disc
(2) The parallelism of the pressure roller
Oil cut off on the surface of the pump cam
(1) Spread butter
Adhesion of pulp spots, cotton wax powder and other debris between the gripper discs
(1) It is necessary to pay special attention to the weft yarns with a large amount of paste adhesion
Degree of adhesion of heald frame and steel reed slurry and oil:
(1) When parking for a fixed length, it is removed by washing with water
Is the electromagnetic brake the parking position normal?
(1) Oil and residue of foreign matter
(2) Wear and poor parallelism
Three, when the time comes
Is there any deviation in cam timing? Is the rotation and wear of the roller follower normal?
(1) After setting the power of the loom to OFF, turn the handle by hand to confirm.
Is the pump stroke a standard size?
(1) After setting the power of the loom to OFF, turn the handwheel by hand to confirm
Is the spring pressure consistent with the set arrival timing?
(1) When getting on the machine, use a stroboscope to confirm
Are there any damages or scars on the tip of the needle tip?
(1) Replace the needle tip
Is the stabilizer deformed?
(1) Replacement of the nozzle body
Is there any rust adhesion?
(1) Clean the nozzle with cleaning fluid
Is the spray direction (up and down and front and back) good?
(1) It should also be confirmed when getting on the machine
Is there any drop off of the European-style connector buffer?
(1) Installation of connector buffer
Are there any signs of wear on the buffers of the European coupling?
(1) European connector buffer
Isn't the looseness of the European-style coupling buffer too large?
(1) Replacement of connector buffer
How about the wear and tension of the power V-belt?
(1) Adjust or replace
How about the wear and tension of the false twist spindle belt?
(1) Replace
Check directionality of yarn feeding body
(1) Up and down and left and right
How sharp is the blade of the mechanical weft cutter?
(1) If there is wear of the blade, use a grinder to grind or replace
Opening, connecting rod Is there any looseness in the nut of the connecting rod rod pin?
(1) Use a torque wrench to confirm
Is the temple rotation smooth?
(1) Remove silk waste and pulp spots
Temples Are there any temple pins bending?
(1) Replace the temple ring
Yarn end treatment Is there any rust on the sensor?
(1) Remove rust
Are there any wear and tear on the cloth side bobbin shaft, bobbin bushing, yarn guide rod bushing, and bobbin shaft bushing?
(1) Replace bobbin shaft, bobbin bushing, yarn guide rod bushing, bobbin bushing bushing
Are there any signs of wear on planetary gear B, sun gear, and selvedge gear?
(1) Replace worn parts
4. Inspection every 6 months
Wear condition of pump plunger and pump cylinder
(1) When the leakage reaches more than 2% of the total water volume, it should be replaced
Valve assembly (discharge side, suction side) check for wear
(1) Confirm that the water volume is decreasing when starting
(2) Use a stroboscope to confirm the injection timing
(3) When the deviation reaches 15mm or more, replace it (replace the discharge side. If the problem cannot be completely solved by replacing the discharge side only, replace the suction side as well.)
Is there any drop off of the European connector buffer?
(1) Installation of coupling buffer
Are there any signs of wear on the buffers of the European coupling? Is the looseness not great?
(1) Installation of coupling buffer
Inspection of the wear condition of the buffer of the switching valve coupling (Inspection every 3 months.)
(1) Replace severely worn parts
Is the clearance between the brake and the rotor consistent with the reference?
(1) Adjust with adjuster
Check the wear condition of the take-up friction roller
(1) Please refer to <5-3 Friction Roller (Recoating of Rubber Film Tape)>.
Take up the brake lining and check for the adhesion of grinding powder, scales, oil, etc.
(1) Use wire brush, banana water, sandpaper, etc. to remove clean
Heald frame guide rail Check wear
(1) Adjust the lateral gap
Check the wear of the middle hook, hook hook, rod end bracket, split rod pin and bushing of the heald frame
(1) The heald frame should be replaced when it is severely worn (the bushing should be replaced when the vertical deflection of the heald frame exceeds 1mm)
Check the heald frame for scars
(1) Deep scars should be replaced
Various belts Check the wear status of timing belts and yarn end treatment belts
(1) Those with severe wear or deep scars should be replaced
V. Preservation and inspection in the first year
(1) Fill the main motor with butter.
1) The symbols for engine oil and butter are hypothetical symbols to make the distinction between types and uses clearer.
2) Note When refueling, it should be added to the position indicated by each refueling position. The usage is the approximate target value.
3) Note Butter with high pressure resistant additives (EP) should not be used for the main motor. Because this kind of butter will cause the temperature of the bearing to rise.
(2) Please check whether the electromagnetic contactor has a roar.
6. Preservation and inspection in the third year
Main motor temperature, sound, loose shaft
(1) Replace the bearing of the main motor (drive wheel side: NU-207EV2)
Dehydration blower motor temperature, sound, dehydration capacity
(1) Clean the blade part and replace the bearing of the blower motor
7. Security and inspection in the 5th year
Overhaul all kinds of bearings, oil seals, gears, cams, bushings, pins
Electrically, check various cables for corrosion and leakage, and check the contacts of various contactors