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volumetric doser for injection mold machine

Model AT-CM-D2
Motor power 0.3kw*2pcs
Rotary speed 1.8-300r/min
MIxing power 0.09kw
Screw diameter 12mm*2pcs
Output capacity 0.05-20kg/h*2pcs
Storage capacity 13L*2pcs
Warranty 1 year warranty+ lifetime tech support
Machine weight 45KG
Description
Description

Optimized Solution for Industrial Material Proportioning

This volumetric doser is engineered specifically for injection molding facilities requiring accurate and repeatable material input control. As a masterbatch dosing machine, it caters to manufacturers and process engineers who demand consistent formulation during production and testing. The system supports automatic dosing of base resins, additives, and color masterbatch, thereby minimizing manual error and improving process reliability. Users benefit from memory storage for multiple formula configurations, facilitating quick recipe changes without compromising batch integrity. This solution is ideal for industrial environments seeking enhanced production efficiency with material savings guaranteed by the precise metering capabilities.


Precision Engineering with Versatile Technical Specifications

Equipped with dual motorized screws, the volumetric doser maintains ±1% dosing accuracy, supported by a DC brushless motor and microcomputer control unit. Screw diameter options ranging from 12 to 30 mm allow output flows from 0.05 to 50 kg/hr, accommodating diverse formulation volumes. The use of stainless steel and chrome-plated components ensures durability and easy maintenance, critical for continuous operation. Memory for up to 50 formula presets streamlines process repeatability, while the modular design permits straightforward disassembly and cleaning. These technical attributes optimize integration with injection mold machines, improving throughput consistency and compliance with material specifications.


Industry Integration Furnishing Production Consistency

This custom volumetric doser plays a vital role in plastic manufacturing sectors requiring precise dosing of masterbatches and additives, including automotive, electronics, and consumer goods production lines. By automating dose control, the system reduces scrap rates and enhances batch uniformity, crucial for high-quality output and regulatory compliance. It facilitates rapid color changeover procedures and process trials, which accelerates product development cycles. The dosing device fits compactly at the machine inlet, making it adaptable to existing line configurations and supporting operator training with intuitive controls. Its robust design and flexible output parameters provide measurable ROI through material savings and enhanced production reliability.




Product Advantages


Modular and Robust Structural Design

The system’s modular architecture enables seamless integration with injection molding operations, allowing quick replacement or upgrade of components while minimizing downtime. The use of durable stainless steel and chrome plating on screws provides high resistance to wear and abrasion, essential for handling various masterbatch types. Versatile screw diameter configurations make the machine adaptable to specific formulation demands, effectively serving as a reliable masterbatch dosing machine. Our volumetric doser supplier expertise ensures design optimized for ease of maintenance and operational longevity, critical for continuous production environments.


Enhanced Accuracy and Operational Efficiency

The advanced control electronics and memory storage of up to 50 formula settings ensure precision dosing parameters can be consistently reproduced, reducing variation in color and additive proportions. Its user-centric interface supports quick changeovers and minimal operator training time, substantially reducing downtime costs. High dosing accuracy around ±1% promotes material usage efficiency, improving cost-effectiveness compared to manual feeding systems. The integration of the dosing system enhances process automation, directly supporting manufacturing quality objectives, making this custom volumetric doser a valuable addition to injection molding production lines.


Features for Double screw volumetric doser
The metering masterbatch machine is suitable for the automatic proportioning of new materials, secondary materials, masterbatch, or additives, and the error value is not higher than ±1%.
The standard model of metering masterbatch machines cannot be used for the treatment of all kinds of plastic powder masterbatch and the treatment of all kinds of food, chemicals, flammable, explosive, and volatile materials. If the customer's product is an optical industry product, such as PC, PMMA, etc., the standard masterbatch machine model cannot be selected. The part in contact with the raw material needs special treatment, such as the use of food-grade materials and polishing treatment.
Double Colors Metering masterbatch mixing machine

working principle for  Double screw volumetric doser
The signal from the control box is transmitted to the motor, the motor starts to rotate, and the screw is driven to rotate through the coupling. The color masterbatch in the hopper falls into the drop rod, is squeezed by the screw, and is conveyed to the base by the screw, so as to achieve the purpose of accurately metering and conveying the color masterbatch.

Standard configuration for Double screw volumetric doser
1. It has the function of permanent memory and storage of data;
2. Using DC brushless motor, no maintenance required;
3. Using microcomputer control, intelligent and precise calculation;
4. It can meet the requirements of external signal input at the same time;
5. The screw is chrome-plated, which is durable;
6. Modular assembly structure, easy to disassemble and assemble, easy to clean and exchange;

Optional configuration for Masterbatch Double screw volumetric doser
1. When the customer is equipped with a dryer of 100KG or below, a large base is required;
2. The metering masterbatch machine can add up to four masterbatches;
3. Optional touch screen control panel;
4. The main hopper is optional to facilitate customers to add main raw materials.

Product Details

Motor of Volumetric Doser

Motor of Volumetric Doser

Using the high accuracy hybrid stepping motor,
Measurement accuracy and output scope.








 

PLC Panel of Volumetric Doser

PLC Panel of Volumetric Doser

The adopted PLC panel shows reliable performance and easy maintenance,
Can store 50sets of formula, can quickly start the machine.

 

Humanized Design of Volumetric Doser
Humanized Design of Volumetric Doser

The large opening on the side of the neck-piece,
large window, and improved static blending.

 







Dosing screw of Volumetric Doser


Dosing screw of Volumetric Doser

Dosing screw material is made by 304 stainless steel, and chrome plated for durability;
The specifications are optional 12/14/16/20/30mm.





Application for Double screw volumetric doser
In general, the metering masterbatch machine is directly installed at the inlet of the molding machine. In order to prevent the control box from shaking with the action of the molding machine screw and causing the loosening of related accessories, it is recommended to fix the control box on a bracket. The motor reduction ratio of this product is divided into 30:1 and 50:1, etc. The screw diameter is divided into five types: 12, 16, 20, 25, and 30mm. Six models can be evolved to provide different outputs from 0.1 to 50 kg per hour. For customers to choose. There is also a two-color masterbatch machine, which can be combined with any two masterbatch machines according to customer needs. Metering masterbatch mixer/ Colors Volumetric Dosers.
Double Colors Metering masterbatch mixing machine


Use Scenarios


Precision Masterbatch Testing in R&D Environments

In research and development laboratories focused on injection molding formulation optimization, the volumetric doser serves to automate precise masterbatch dosing in small trial batches. This capacity ensures accurate color matching and additive proportioning during development cycles, meeting stringent repeatability criteria. Its programmable memory supports experimentation with multiple formula variants, while the modular design facilitates cleaning between tests to avoid cross-contamination. Operating within controlled lab setups, the dosing device enhances data reliability for process optimization studies, forming an integral part of the evaluation and scaling workflow for new polymer formulations.


Streamlined Production in Automotive Component Manufacturing

In automotive injection molding plants, the need for consistent masterbatch dosing directly affects part quality and regulatory compliance. This masterbatch dosing machine integrates with existing injection molding lines to provide precise and repeatable color and additive dosing, critical for maintaining component integrity and finish standards. Robust construction ensures dependable operation under continuous industrial conditions, while versatile output ranges accommodate the variable production volumes typical of this sector. It supports quick formulation changes required for different vehicle models, enhancing production flexibility and enabling efficient system integration with workflow automation tools.




FAQ 


What types of materials can your volumetric doser handle?

Our volumetric doser is designed for automatic dosing of various materials, masterbatch, and additives. For products involving optical materials such as PC or PMMA, or volatile substances, we recommend special handling or customized configurations to ensure safety and accuracy.


Can you customize the volumetric doser to fit specific production requirements?

Yes, we offer custom volumetric dosers with options like larger material loading, multiple masterbatches, and touchscreen interfaces. Our modular design enables easy upgrades and tailored adjustments to meet your injection molding needs efficiently.


How is installation and integration handled for your dosing units?

We design our volumetric dosers with a compact form factor and mounting brackets for straightforward installation at the injection molding machine inlet. Our technical support assists you in bracket mounting validation and ensures smooth integration into your production line.


What maintenance and technical support do you offer for your dosing machines?

Our volumetric dosers feature stainless steel and chrome-plated components for durable wear resistance and easy cleaning. We provide a one-year warranty plus lifetime technical support to help you with calibration, troubleshooting, and maintenance, ensuring long-term operational reliability.

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