Automatic Weighing Mixing System For LSZH Cable Or Soft PVC

Application and Introduction

1. Comprehensive Process Flow

The core of our automated material handling architecture is built around a highly synchronized process flow designed for continuous production efficiency. The exact operational sequence ensures flawless material transition from raw inputs to finished goods: 1. Double roll open refining and pelletizing: raw and additives materials → batching → high speed mixer → internal mixer → double roll open mixer → cooling water tank → drying → pelletizer → screening magnetic separation → dosing → packaging. By automating this entire closed-loop—from initial jumbo bag unpacking to final sealing—the system drastically reduces manual intervention, mitigates labor costs, and elevates your facility's capacity to handle large-scale volume requirements consistently.

2. Precise Dosing is the Key to Success

Achieving exact formulation precision and batch consistency is the critical foundation for manufacturing Low Smoke Zero Halogen (LSZH) and soft PVC cable compounds. ChiYu company can provide all the tailor-made solutions you need, from batch-weighing components to differential scales with built-in control systems. we can integrate into your facility the appropriate dosing system and accompanying conveyor process for a wide variety of raw materials and additives such as stabilizers, lubricants, softeners, dyes, fillers, flame retardants, cross-linking agents, propellants or glass or carbon fiber. Our weighing and dosing systems make dependable work of measuring many formulas in the rubber and tire industry and also in the food industry. By utilizing high-accuracy micro-dosing technology, the equipment strictly controls the ratio of complex additives, ensuring that every batch of cable material maintains uniform dispersion without dead zones. This precision guarantees that the physical and chemical properties, such as flame retardancy and low smoke emission, remain highly consistent across production runs. Furthermore, we deliver modular, turnkey engineering that seamlessly docks with your existing twin-screw extruders and internal mixers, adapting flexibly to unique plant layouts.

3. Process Oil Weighing and Dosing

Handling viscous liquids requires specialized engineering to prevent contamination and ensure exact ratios. Accurate weighing and dosing of process oils, which are the main inputs of the rubber mixtures, is of great importance for the quality of the resulting product. In addition to product quality, labor costs and environment cleaning has become a major requirement in recent years. To address these stringent environmental and safety demands, our system incorporates an intelligent, fully enclosed vacuum conveying and dust collection architecture. This design effectively eliminates airborne powder dispersion and process oil dripping, transforming your facility into a modern, dust-free workshop that meets strict environmental regulations.

Main Components

Our automatic weighing mixing system is constructed from industrial-grade modules, each engineered to perform a specific function within the continuous production cycle. The standard configuration includes the following precise components:

• 1. Overhead crane set for jumbo bags: Facilitates the initial unloading stage, handling heavy bulk materials smoothly and safely to initiate the automated workflow without physical strain on operators.
• 2. Loading hoppers for pvc resin and caco3: Designed with optimized geometry to accommodate high-volume base materials, ensuring a steady, uninterrupted feed into the primary mixing chambers.
• 3. Vacuum conveying hopper with load cell: Integrates advanced weight-sensing technology to transfer powders securely under negative pressure, preventing contamination and material loss.
• 4. Automatic oil scaling system: Delivers precise liquid additive measurement, injecting exact volumes of process oils to maintain compound elasticity and performance.
• 5. High speed mixer and cooling mixer: Generates intense kinetic energy for rapid, homogenous blending of resins with additives, followed by controlled thermal reduction to prevent premature degradation.
• 6. Automatic oil scaling system: A secondary liquid dosing unit dedicated to multi-stage oil injection, allowing for complex formulation recipes requiring phased additive introduction.
• 7. Pelletizing machine: Transforms the uniformly mixed compound into dense, structurally uniform pellets, optimizing the material for downstream extrusion processes.
• 8. Blower(Pneumatic conveying system.): Utilizes controlled air pressure to transport finished pellets swiftly and gently, minimizing physical degradation or dust generation during transit.
• 9. Single-layer vibrating sieve: Actively screens the output to isolate and remove any oversized or irregular particles, ensuring only dimensionally perfect pellets proceed.
• 10. Compound storage silo: Provides a secure, moisture-controlled buffer zone for the finished product, balancing continuous production rates with packaging speeds.
• 11. Automatic packing machine. Completes the closed-loop system by precisely weighing and sealing the final pellets into bags, ready for immediate dispatch or storage.

Advanced Application Scenarios & Compliance Enablement

Engineered specifically for the production of specialized cable materials, this automated weighing and mixing system empowers manufacturers to meet the extreme fire-resistance and low-toxicity demands of modern infrastructure. The resulting LSZH and soft PVC compounds are perfectly suited for high-end application scenarios, including rail transit networks, aerospace engineering, hyperscale data centers, high-rise commercial buildings, and advanced photovoltaic solar systems where safety cannot be compromised.

Furthermore, by maintaining absolute precision in temperature control, mixing shear, and additive ratios, the equipment directly facilitates compliance with stringent global standards. Manufacturers leveraging this system can confidently produce cable materials that easily pass rigorous international environmental and flame-retardant certifications, such as RoHS, REACH, UL, and IEC. This enhanced process reliability not only protects the end-user but significantly elevates the market competitiveness and trust in your final cable products.