What are the safety measures for jacquard dragon head machines

The safety measures for jacquard dragon head machines mainly include the following aspects:

1、 Preparation before operation

Wear workwear that meets safety standards: Operators must wear anti-static clothing, protective shoes, and goggles. Long hair should be tied up and placed inside a work cap.

Prohibit wearing gloves, rings, and other items that may get caught up in the equipment.

Keep the operating environment clean: The operating environment should be kept dry and tidy, with no oil or water stains on the ground.

Ensure that there are no obstacles within 1.5 meters of the equipment for rapid evacuation in emergency situations.

Check equipment information: Check the equipment nameplate information to confirm that the model is consistent with the production task order.

The fluctuation range of power supply voltage shall not exceed ± 5% of the rated value, and the grounding wire shall be firm and not loose.

2、 Pre start inspection

Lubrication system inspection: Observe whether the oil tank level is within the marked range.

Manually press the oil pump until lubricating grease overflows from each oil injection point.

Transmission chain inspection: Check the tightness of the jacquard faucet transmission chain, with a standard of no more than 3 centimeters of single-sided sagging amplitude.

Electromagnetic needle selector test: Test the functions of the electromagnetic needle selector one by one, input test instructions through the control panel, and observe whether each vertical needle completes the lifting action according to the program.

Abnormal needles need to be numbered and replaced.

3、 Monitoring during operation

Startup process: Following the four level confirmation system, press the green start button and run at a low speed of 5 revolutions per minute for 2 minutes, monitoring for any abnormal noise from the gearbox and main shaft bearings.

Gradually increase the speed to 20 revolutions per minute, observe the synchronization of the lifting and lowering of the frame, and use a strobe to detect the clarity of the opening.

After confirming that the equipment is running smoothly, increase the speed to the required range of the process, and control the error within ± 2 revolutions per minute.

Operation monitoring: Yarn system: Ensure that there are no burrs on the guiding porcelain eyes, conduct sensitivity tests on the self stopping device for yarn breakage no less than 3 times per shift, and the response time for yarn breakage should be less than 0.8 seconds.

Pattern control system: Real time comparison between actual weaving patterns and design drawings. If the deviation exceeds 1.5 millimeters, the pattern positioning needs to be recalibrated.

Mechanical transmission components: Check the wear of the transmission belt every hour. If the wear depth of the V-belt on one side reaches 1 millimeter, it must be replaced. If there are more than 3 cracks at the root of the synchronous belt teeth, stop using it immediately.

Temperature monitoring: Record the equipment temperature every 30 minutes during operation, and the temperature rise of the main shaft bearing should not exceed 45 ℃. If there is any abnormal temperature rise, the machine should be stopped immediately for troubleshooting.

4、 Exception handling

Establish a graded response mechanism: When three consecutive warp yarn breaks are detected, the equipment will automatically slow down to 10 revolutions per minute and sound an alarm. The operator needs to arrive at the machine for processing within 90 seconds.

Pattern misalignment treatment: First, check if the pattern fixing buckle is loose.

Verify again whether the voltage of the needle selection solenoid valve is stable within the range of 24V ± 0.5V.

Emergency noise handling: Immediately cut off the power supply.

Use specialized tools to manually turn and locate the source of abnormal noise.

It is prohibited to conduct maintenance while the equipment is rotating due to inertia.

5、 Shutdown operation and maintenance

Shutdown operation: Reduce the speed to 15 revolutions per minute 30 minutes in advance.

Stop feeding when the remaining yarn length on the weaving shaft is less than 2 meters.

Maintenance measures: During weekly maintenance, the jacquard machine faucet should be disassembled, the vertical needle guide groove should be cleaned with industrial alcohol, and the vertical needle gap should be readjusted to 0.05-0.08 millimeters after installation.

Long term shutdown requires applying rust proof oil to the guide rail and completely covering the equipment with a dust cover.

Activate the dehumidification device when the humidity exceeds 70%.

6、 Safety regulations and systems

The Seven Prohibitions Principle: Those who have not passed the 16 hour pre job training are prohibited from operating independently.

It is strictly prohibited to place tools on the rack platform during equipment operation.

The maintenance must display a warning sign that reads' No closing while someone is working '.

The handling of broken wires shall not exceed the safety line of the equipment.

Chemical cleaning agents need to be stored in explosion-proof cabinets.

Double hook safety belts are required for high-altitude operations.

Emergency escape routes should be kept unobstructed 24/7.

Special homework system: If replacing the large gear, a two person supervision system must be implemented, using a torque wrench to tighten the bolts in the prescribed order.

Maintenance system: Implement a three-level system, including daily maintenance, weekly maintenance, and quarterly maintenance.

Establish a replacement file for vulnerable parts, such as mandatory replacement of spring plates after 2000 hours of operation, and durability testing for solenoid valves that have operated more than 500000 times.

Training and assessment: New employees need to complete 10 common fault handling assessments through a virtual simulation system and pass the practical operation before they can start working.

Document management: Complete recording of equipment operation logs, including daily output, classification of downtime reasons, energy consumption data, and other elements.

Synchronize and update electronic records during process changes, with a retention period of no less than twice the product warranty period.

Qualification review and regulation revision: The qualification certificate of special operation personnel shall be reviewed every two years.

The equipment safety operating procedures are reviewed and revised annually by registered safety engineers.

In summary, the safety measures for jacquard dragon head machines include preparation before operation, inspection before startup, monitoring during operation, handling of abnormalities, shutdown operation and maintenance, as well as safety regulations and systems. These measures together constitute the guarantee system for the safe operation of jacquard dragon head machines.