What safety precautions should be taken during the operation of Dalian plastic blown film machine?

The development trend of plastic film blowing machines is mainly reflected in the continuous improvement of technology and the intelligence of equipment. With the advancement of technology, the production efficiency of plastic film blowing machines continues to improve, and product quality is further guaranteed. At the same time, the introduction of intelligent technology has made device operation more convenient, parameter adjustment more precise, greatly improving production efficiency and product quality. In the future development, plastic film blowing machines will continue to move towards intelligence, efficiency, and environmental protection, injecting new impetus into the development of the plastic packaging industry.

Plastic blown film machines are widely used in food packaging, medical packaging, construction, agricultural coverage, and industrial fields. The performance and use of the produced film are determined by different plastic raw materials, production processes, and equipment specifications. The production efficiency, film thickness, width, transparency, and flatness of the plastic blown film machine have a significant impact on the quality of the final product.

What safety precautions should be taken during the operation of Dalian plastic blown film machine?

·Mechanical component safety

·Protective device inspection: Before starting the plastic film blowing machine, it is necessary to check whether all protective devices on the equipment are installed in place and functioning properly. For example, the protective covers of moving parts such as motors, transmission belts, and gears should be firm and reliable to prevent operators from coming into contact with running parts and causing twisting accidents.

Emergency stop button familiarity: Operators should be familiar with the location and usage of the emergency stop button on the equipment. When encountering unexpected situations such as film wrapping, abnormal equipment vibration, etc. that may cause danger, the emergency stop button can be quickly pressed to immediately stop the equipment from running.

Equipment stability check: Ensure that the blown film machine is placed on a stable and solid ground. If the device is not placed stably, it may shake or tilt during operation, causing serious safety accidents. During the installation and debugging phase of the equipment, it is necessary to use tools such as a spirit level to check the levelness of the equipment and fix it with anchor bolts and other methods.

·Electrical system safety

·Good grounding: The electrical system of the plastic film blowing machine must have a good grounding. This is to prevent operators from getting electrocuted when the equipment leaks electricity. When installing the equipment, it is necessary to check whether the grounding wire is correctly connected to the grounding electrode, and the grounding resistance should meet safety standards (generally not exceeding 4 Ω). Regularly check the integrity of the grounding system to avoid electrical accidents caused by poor grounding.

Prevent overload and short circuit: Avoid overloading the circuit by simultaneously opening too many electrical devices. During operation, electrical equipment should be used according to its rated power and current requirements. For example, do not arbitrarily increase the number of heating rods or use high-power auxiliary equipment without considering the carrying capacity of the circuit. At the same time, it is necessary to regularly inspect the electrical circuits for damage, aging, and other conditions to prevent short circuits from causing fires.

Electrical operation specifications: When operators come into contact with electrical equipment, such as control cabinets, motor junction boxes, etc., they must first cut off the power supply and ensure that the equipment has completely stopped running and the energy storage components such as capacitors have been discharged. When repairing and maintaining electrical equipment, professional electricians should operate it strictly in accordance with electrical safety operating procedures.

·High temperature component safety

·Risk prevention of burns: The extrusion system and die head of the plastic film blowing machine have high temperatures during operation. During the operation of the equipment, operators should avoid contact with these high-temperature components to prevent burns. When debugging equipment or operating near high-temperature components, protective gloves, long sleeved work clothes, and other protective equipment should be worn. For example, when cleaning plastic residue at the mold head, the heating device should be turned off first, and the temperature should be lowered to a safe range before cleaning.

Maintenance of high-temperature components: Maintenance and repair of high-temperature components should be carried out after the equipment has completely cooled down. When replacing heating elements (such as heating coils) or conducting internal inspections of equipment, ensure that there is no residual heat that may cause injury to personnel. At the same time, attention should be paid to whether the insulation materials around high-temperature components are intact. If they are damaged, they should be replaced in a timely manner to reduce the impact of heat loss on the surrounding environment and operators.

·Raw material and film processing safety

·Raw material handling safety: When handling plastic particle raw materials, attention should be paid to preventing the raw material bags from breaking and causing the raw materials to scatter. If the raw materials are scattered, it may cause the operator to slip and get injured. Use appropriate handling tools such as forklifts, handcarts, etc., and follow the correct handling methods to avoid accidents such as sprains and strains caused by excessive force or improper posture.

Film winding safety: During the film winding process, attention should be paid to preventing the film from winding around the operator's hands or other parts of the body. The film winding speed is usually fast, and if accidentally wrapped, it may cause limb injuries. The operator should maintain concentration during the operation and keep a certain safe distance from the winding device. At the same time, when there are abnormal situations in the film (such as deviation or wrinkles) that need to be adjusted, the winding device should be stopped first before processing.

The plastic blown film machine is mainly composed of an extruder, a die head, a cooling roller group, a traction roller group, a winding machine, and other parts. After the extruder heats and melts the plastic particles, they are extruded onto the cooling roller group through the die head, and then pulled and pressed into shape by the traction roller group. The plastic film is then coiled by the coiler. The entire process requires strict control of parameters such as temperature, pressure, and speed to ensure the quality of the final product.

The working principle of a plastic blown film machine is to first put plastic particles or granular raw materials into an extruder, and then melt them by heating to form molten plastic. Next, the molten plastic is extruded through an extrusion head into a molding die, where it is stretched and cooled to form a thin film of a certain thickness. After being processed by traction rollers and cooling rollers, the film is rolled up or collected in sheets.