As an important piece of equipment in the plastic packaging industry, the technical level and operational experience of the chemical drum blow molding machine directly affect the quality and production efficiency of the chemical barrel. CRT will help you summary the technology and experience of the chemical barrel blow molding machine in detail from multiple perspectives such as technical principles, operational skills, maintenance, troubleshooting, etc., hoping to assist you.
Classification of chemical barrels:
Plastic single and double ring barrels are common containers used to hold chemical raw materials, coatings, pesticides and other chemicals.
- Chemical single-ring barrel
Single-ring barrels usually have a lifting ring on the top of the barrel for easy handling. The design of this type of barrel is relatively simple, the cost is relatively low, and it is suitable for one-time use or occasions where the weight bearing is not required. The hollow blow molding barrel with a pressure ring and edge pressing structure at the junction between the barrel mouth and the barrel body.
- Chemical double-ring barrel
The double-ring barrel has two lifting rings at the top of the barrel, which are distributed on both sides of the barrel, making the handling more balanced and the load bearing capacity stronger. Double-ring drums are suitable for reuse or for heavier items. The double-ring barrel is a hollow blow molding barrel, which is equipped with a pressure ring and an edge pressing structure at the connection between the upper and lower end faces and the barrel body. Double-ring barrels are generally closed barrels, which require a large, uniform and firm pressure ring, smooth appearance and no bubbles. Qualified double-ring barrels must meet the relevant falling ring standards.
The technical principle and operational skills.
- Technical principle
The chemical barrel blow molding machine mainly adopts the extrusion blow molding process, and its technical principles include melting, extrusion, blow molding, cooling, Release and other links. Here are a few key tips:
- Melting:
Properly control the temperature of the extruder to ensure that the plastic pellets are fully melted, avoiding product quality issues caused by excessively high or low temperatures.
- Extrusion:
Adjust the screw speed and extrusion pressure to ensure the plastic melt is extruded evenly, guaranteeing the stability of the pipe blank.
- Blow molding:
Adjust the blow molding pressure according to the product specifications to ensure that the plastic preform expands fully and adheres closely to the inner wall of the mold.
- Cooling:
Set an appropriate cooling time to ensure the strength and shape stability of the chemical drums.
- Operational skills
(1) Mold selection: Choose the appropriate mold based on the specifications of the chemical drum to ensure product size accuracy;
(2) Material drying: Ensure that the materials are thoroughly dried to avoid issues such as product bubbles and deformation caused by moisture;
(3) Temperature control: Master the impact of temperature in various areas on product quality, adjust in real-time, and ensure stable production;
(4) Production speed: Adjust the production speed according to equipment performance and product requirements to improve production efficiency.
Maintenance
- Daily maintenance
(1) Cleaning: Keep the surfaces of the equipment clean and promptly remove dust from components such as molds and extruders；
(2) Lubrication: Regularly lubricate the moving parts of the equipment to reduce wear；
(3) Inspection: Check whether each component of the equipment is functioning normally and address any issues promptly.
2、Regular maintenance
(1) Replace worn parts: Replace severely worn components such as screws and molds in a timely manner based on the equipment’s operating condition.
(2) Electrical system inspection: Regularly check electrical circuits to ensure safe operation of equipment.
Troubleshooting
- Common faults and their causes
(1) Product deformation: caused by uneven mold temperature, insufficient cooling time, and other reasons.
(2) Product bubbles: Caused by insufficient drying of raw materials, improper temperature control, and other reasons.
(3) Wear of the extruder screw: caused by excessive impurities in the raw materials, improper operation, and other reasons.
- Troubleshooting methods
(1) Adjust the mold temperature and cooling time to ensure the dimensional accuracy of the product in response to product deformation.
(2) To address product bubbles, strengthen raw material drying and optimise temperature control.
(3) To address the wear of the extruder screw, replace with qualified materials and standard the operating procedures.
Experience summary
- Choose high-quality raw materials: The quality of the raw materials directly affects the quality of the chemical drums, so it is important to select materials produced by reputable manufacturers；
- Optimise production processes: Adjust production parameters based on equipment performance and product requirements to improve production efficiency；
- Enhance operational skills: Strengthen training for operators to improve operational levels and reduce failure rates；
- Focus on equipment maintenance: Carry out daily maintenance and regular servicing of equipment to extend its lifespan.
In the field of technology, there will always be new problems arising, and there will always be new technologies to solve these problems.
Therefore, this article GREAT will explore the production key points of the chemical drum blow molding machine from these four aspects, hoping to be of help to everyone.