SGB gravimetric blenders, precisely mix various materials based on their weight
Gravimetric blender mix materials such as primary material, regrind, and masterbatch together before plastic processing, then discharged into the injection molding machine, extruder or blow molding machine.
- Self-Calibration techniques for addressing material and master batch density variations
- Gravimetric technology guarantees ± 0.1% precision during micro-dosing of free-flowing material.
- The load cell measures each batch and adjusts the next for consistent dosing precision
- Combine control for material conveying with the optional vacuum unit and hopper receiver
- Colorful graphical interface, touchscreen functionality, and a choice of multiple languages
- The base model accommodates 4 components, while custom versions can be designed for over 6 components
Working Principle
Yushine gravimetric blender is positioned directly above a plastic machine’s throat to regulate the metering of raw materials by weighing individual recipe batches in injection extrusion and blowing production. Optional floor stand for SGB600 and below model.
Using intuitive controls, you can adjust recipe ratios from 0.01% up to 100%. During its cycle, the blender dispenses ingredients in predetermined proportions from distinct hoppers into a weighing chamber. The batch then transitions to a mixing chamber before being directly channeled into the processing unit. The system automatically makes minor adjustments in the following batches.
The system includes a Programmable Logic Controller (PLC) equipped with inbuilt material conveying software. This advanced control system enables smooth, automatic, and uninterrupted material loading. It manages the flow of materials throughout the blending process, ensuring that each component is dispensed accurately and that the blend is mixed to the precise specifications.
Application in Injection/Extrusion Processes
The design and functionality of the Yushine SGB gravimetric feeder make it suitable for applications where precise control over material blending is needed, such as in the injection molding or extrusion of plastics and other materials.
In summary, the SGB is a sophisticated gravimetric batch blender that offers automation, flexibility, and precision. With various configurations and advanced control features, it’s designed to meet the specific needs of industries requiring the exact blending of multiple components, such as in injection or extrusion manufacturing processes.
Effortless Material Adjustments and Upkeep
All material-touching surfaces, such as hoppers, weighing bins, and mixing chambers, are readily accessible. The system functions with low maintenance needs, and no tools are necessary.
Yushine Gravimetric Blender Features
Fully Automatic System: The SGB is a fully automatic blender, meaning it requires minimal human intervention to operate. It can be set up to run either on a one-to-one basis (handling individual batches) or as a central system (managing multiple batches across various locations).
Precision Mixing: It’s designed to create a precision mix of multiple component materials. This is essential for processes like injection molding or extrusion, where precise proportions are required to create uniform and high-quality products.
Component Configurations: The units come with configurations for handling 4, 6, or 8 different components. This flexibility allows for the complex blending of various materials, accommodating different production needs.
Throughput Volumes: Different throughput volumes can be accommodated, catering to the specific production requirements of different industries or applications.
- Datasheet
- Images
| Model | Motor Power（kw） | Output Capacity(kg/hr) | Main Metering Valve(PC) | Secondary Metering Valve(PC) | Maximum Output(KG) |
| SGB-40-4 | 0.25 | 40 | 3 | 1 | 1 |
| SGB-200-4 | 0.65 | 200 | 3 | 1 | 3 |
| SGB-600-6*SGB-600-4 | 0.75 | 400*600 | 4*3 | 2*1 | 8*8 |
| SGB-1200-6*SGB-1200-4 | 1.1 | 900*1200 | 4*3 | 2*1 | 12*12 |
| SGB-2000-8*SGB-2000-6*SGB-2000-4 | 2 | 1200*1600*2000 | 5*4*3 | 3*2*1 | 18*18*18 |
| SGB-3000-8*SGB-3000-6*SGB-3000-4 | 3 | 2000*2500*3000 | 5*4*3 | 3*2*1 | 40*40*40 |
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Complete Guide Gravimetric Blenders
Gravimetric blenders are precision blending devices that utilize weight-based measurements to ensure the accurate mixing of materials. Commonly used in industries like plastics, chemicals, and food processing, these blenders play a pivotal role in ensuring consistency and quality in the final product.
Here are the FAQ lists:
- What features does the Gravimetric Sensor offer, and how does it ensure accuracy？
- What type of metering valve is used and how does it affect accuracy and maintenance?
- What is the difference between volumetric and gravimetric feeders?
- What is the Accuracy and Precision between volumetric and gravimetric feeders?
- What are the Applications of the volumetric and gravimetric feeders?
The Gravimetric Sensor uses advanced algorithms for self-optimization, automatic compensation, and vibration prevention, ensuring a ratio error of just 0.3% to 0.5%.
We utilize a Side-pull metering valve which keeps the material ratio under 5%. For enhanced blanking accuracy, we employ a screw metering valve. This design not only offers precision but also simplifies maintenance and facilitates easy replacement.
Volumetric and gravimetric feeders are both used to deliver precise amounts of material, but they operate on different principles and have distinct advantages and disadvantages. Here are differences:
1. Principle of Operation:
- Volumetric Feeder: Measures and delivers material based on volume. The speed of the discharge mechanism (like a screw or a belt) is set to deliver a predetermined volume of material per unit of time.
- Gravimetric Feeder: Measures and delivers material based on weight. Typically, it uses a load cell to continuously weigh the material being delivered and adjusts the feed rate in real-time to ensure the desired weight of the material is fed over a given period.
2. Feedback Control:
- Volumetric Feeder: Operates without feedback control. It relies on the consistent flow of material at a set volume.
- Gravimetric Feeder: Has a feedback mechanism (usually load cells) that constantly monitors and adjusts the feed rate based on the weight of the material.
3. Complexity and Cost:
- Volumetric Feeder: Typically simpler in design and less expensive than gravimetric feeders.
- Gravimetric Feeder: More complex due to its weighing mechanism and feedback control, which often results in higher initial costs.
- Volumetric Feeder: Its accuracy is dependent on the consistency of the material’s density. If there are fluctuations in material density, the actual weight of the material fed can vary.
- Gravimetric Feeder: Generally offers higher accuracy and precision because it continuously measures the weight of the material and adjusts accordingly. It is not affected by variations in material density.
Applications:
- Volumetric Feeder: Best suited for applications where the material’s density is consistent, and high precision is not essential.
- Gravimetric Feeder: Preferred in industries where precision and consistency are critical, such as in pharmaceuticals, food processing, or when working with expensive materials where wastage must be minimized.