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This automatic dosing mixing system is tailor-made for mass production PVC pipe and window profile factories. It adopts computer intelligent control to realize unmanned loading, weighing, mixing and extruder feeding, replacing error-prone, high-cost manual mixing process. The whole machine is composed of seven modular units with closed dust-proof conveying design, protecting workers from chemical raw material pollution. It has stable running case in Anhui Conch Group Wuhu factory since 2014, greatly improving batching accuracy and production efficiency while cutting long-term labor expenditure.
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The PVC window profile automatic dosing mixing system is a full-set integrated compounding solution independently developed to upgrade backward manual production lines of medium and large plastic profile manufacturers. In traditional PVC processing workshops, all material proportioning, weighing and material transfer work rely entirely on workers. Repeated long-hour manual work inevitably leads to fatigue, random weighing deviation and unstable raw material ratio, which directly causes defective PVC window profiles and material waste. Besides, continuous manual operation brings huge labor intensity and persistent labor cost pressure for enterprises. Worse still, floating calcium carbonate powder and various chemical additives in the workshop will cause long-term damage to workers’ respiratory system and skin.
To eliminate all the above drawbacks, our technical team integrates pneumatic conveying, vacuum automatic metering, PLC computer centralized control and sealed storage silo technology into one complete system. Every link from raw material feeding to finished compound delivery to extruder runs automatically without manual intervention. The system is assembled by seven independent standard modules that can be rearranged according to customer’s factory area, daily output and existing extrusion equipment layout. It is not only suitable for newly-built PVC profile intelligent workshops, but also supports reconstruction and upgrade of old production plants. The most authoritative industrial verification comes from Anhui Conch Group Wuhu base, which put this full-automatic dosing mixing system into formal operation in 2014 for continuous PVC window profile mass production. After years of stable operation, the equipment proves strong compatibility with mainstream PVC window formula and harsh continuous production environment.
First of all, ultra-high stable dosing precision controlled by computer program. Operators input fixed material formulas on the touch screen control cabinet, and the vacuum weighing module will automatically complete quantitative feeding of PVC resin and calcium carbonate. No manual weighing error exists, effectively reducing profile reject rate and raw material loss caused by mismatched proportion.
Secondly, obvious long-term labor cost reduction. The whole production flow of batching and mixing realizes unmanned operation. Factories no longer need to arrange multiple full-time workers for material weighing, carrying and feeding. One-time equipment investment replaces recurring monthly salary, welfare and management cost of mixing post workers, reaching cost recovery within 3 to 5 years under normal production capacity.
Thirdly, full closed dust isolation design protects employee occupational health. All raw material storage, conveying and mixing sections adopt fully sealed pipelines and silos. Dust of calcium carbonate and chemical additives cannot spread in the air, avoiding occupational lung and skin diseases caused by long-term dust contact.
Fourthly, continuous high production efficiency matching extrusion lines. Different from intermittent manual material handling, the pneumatic conveying and circulating mixing structure supports non-stop cyclic batching. Mixed qualified materials are automatically stored in compound silos and continuously supplied to extruders, perfectly matching high-speed continuous PVC window profile extrusion production demand.
Fifthly, flexible modular layout with strong adaptability. Seven core components can be combined, increased or reduced freely according to customers’ site space, daily output and formula types. The system can be connected with single or multiple extruders simultaneously to satisfy small, medium and large-scale production demands.
Sixthly, mature industrial application with reliable performance. The system has passed long-term continuous production test at Anhui Conch Group’s production base since 2014. It can run stably all day long under high-load continuous production without frequent breakdown and complicated maintenance.
The full automatic dosing mixing system consists of seven standard functional modules, each with independent and clear working functions:
Loading station equipped with PVC loader and CaCO3 loader: Two separate feeding devices specially for PVC main raw material and calcium carbonate filler, realizing automatic raw material feeding into storage silos without manual dumping.
Pneumatic conveying system: Closed pipeline negative pressure conveying structure, transporting raw materials between silos and mixing host, preventing dust leakage and material waste.
PVC & CaCO3 storage silos: Large-capacity sealed vertical silos for long-term storage of two main raw materials, isolating raw materials from moisture and workshop dust pollution.
Vacuum conveyor with automatic weighing system: The core metering component of the whole set, accurately measuring raw material weight according to preset formulas and delivering materials to the mixer quantitatively.
PVC mixer unit: High-speed mixing host to fully stir PVC resin, calcium carbonate and auxiliary additives into uniform compound raw materials for extrusion.
Compound storage silo: Special silo for storing well-mixed materials, ensuring sufficient standby mixed materials to avoid production pause caused by delayed mixing.
Automatic feeding system for extruder: Connected with compound silos, automatically conveying mixed materials to the feed inlet of PVC window profile extruders in stable flow.
Client Name: Anhui Conch Group Co., Ltd
Plant Location: WuHu, China
Construction Year: 2014
Final product: PVC window profile
Plant for: Automatic feeding system,Dosing and weighing,Mixing system,Conveying system.
This automatic dosing mixing system is the standard supporting equipment for plastic building material production lines. It mainly serves manufacturers producing solid PVC window profiles, hollow PVC door profiles, PVC decorative plastic strips and other architectural plastic extruded products. It matches single-screw and twin-screw PVC profile extruders perfectly, widely applied in standardized intelligent automatic workshops of plastic profile factories.
Compared with decentralized small manual mixing stations, this centralized automatic batching system centralizes all raw material storage, weighing and mixing processes in one sealed area. It optimizes workshop environment, simplifies production management and lays a foundation for factory digital and unmanned intelligent transformation. Apart from PVC window profile manufacturing, the system can also be slightly adjusted to adapt to production of PVC cable materials, PVC foam boards and other PVC plastic products with similar compound formulas.
Q1: What types of manufacturers is this automatic dosing mixing system suitable for?
A1: This integrated system is specially developed for medium and large factories engaged in mass production of PVC window profiles, PVC door profiles and PVC plastic pipes. It is not recommended for small processing workshops with daily output below 5 tons, which often change formulas randomly with unstable production volume.
A2: Absolutely yes. The PLC computer control system can store more than 50 groups of different PVC window profile formulas. Operators only need to click corresponding formula numbers on the touch screen, and the system will automatically adjust weighing parameters without repeated manual data entry.
A3: Full-time on-duty workers are not required. After setting formulas and starting the system, all procedures including loading, conveying, weighing, mixing and extruder feeding run automatically. Staff only need to conduct simple daily regular inspection to check equipment running status and raw material stock level.
A4: It has strong compatibility. Our engineers will conduct on-site measurement of customer’s workshop space and original extruder model before design. The modular structure can be customized to connect old extrusion equipment, realizing production line intelligent upgrading without completely replacing original extruders.
