EXTRUTEX One Piece Type Autoloader Series
Compact, High-Suction Automatic Material Loaders for Injection Moulding

Introduction to the EXTRUTEX One Piece Type Autoloader

In modern plastics processing, reliable and contamination-free delivery of pellets or regrind to the injection moulding machine is essential for consistent product quality and efficient production. Manual loading is labour-intensive, prone to spills and moisture pick-up, and difficult to control. The EXTRUTEX One Piece Type Autoloader series solves these problems with a fully integrated, compact solution that mounts directly on or beside the machine.

Designed in Austria and manufactured in advanced facilities in Nanjing and Shanghai, China, every unit reflects a focus on strong suction performance, precise control, operator convenience, and low fault rates. Unlike larger detachable systems that separate the controller from the hopper, the One Piece design integrates the motor, control box, material hopper, and suction circuit into a single, space-saving assembly. This makes the series particularly suitable for smaller workshops, individual machines, or applications where floor space and simplicity are priorities.

The range covers conveying capacities from 250 kg/h to 350 kg/h with a standard conveying height of 4.5 m. All models use an imported high-speed commutator motor that delivers strong suction while keeping overall dimensions small. Microcomputer control ensures accurate cycling, an externally mounted air-storage device thoroughly cleans the filter, and multi-fault indicator lamps help operators diagnose and resolve issues quickly.

Whether you need a simple loader for a single injection machine or a compact solution that works with a hopper dryer, the EXTRUTEX One Piece Type Autoloader provides reliable automatic feeding with minimal installation effort and maximum operational clarity.

Performance Characteristics

Six core performance pillars define the EXTRUTEX One Piece Type Autoloader series. Each has been engineered to address real production challenges in plastics processing.

The imported high-speed commutator motor is central to the compact design. By combining high rotational speed with efficient aerodynamics, the motor generates strong vacuum while the overall unit remains small enough to mount on or near the injection machine without occupying valuable floor space. This is especially valuable in crowded workshops or when multiple machines share limited floor area.

Convenient connection between the operation controller and the electric control box reduces installation time and makes it easier for operators to access controls. The microcomputer manages the entire conveying cycle with high repeatability, ensuring that material is delivered consistently without under- or over-filling the hopper.

Filter cleaning is a common maintenance point on vacuum loaders. The externally mounted air-storage device stores compressed air (or uses the system’s own pressure) and releases it in a controlled pulse to blow dust off the strainer. This thorough cleaning keeps suction performance high over long periods and reduces the need for manual filter intervention.

Electronic action detection monitors key movements within the cycle. By verifying that valves and other actuators have completed their intended actions, the system can detect anomalies early and keep the overall fault rate low. When a problem does occur, the multi-fault indicator lamps provide immediate visual information, allowing operators to resolve the issue without lengthy troubleshooting.

Working Principle and Typical Layouts

The EXTRUTEX One Piece Type Autoloader operates on the vacuum conveying principle. The high-speed motor drives a blower or impeller that creates negative pressure in the suction circuit. Material is drawn from a storage bin, bag, or dryer outlet through the suction tube into the material hopper. Once the hopper reaches the set level (detected by an electric eye or similar sensor), the suction cycle stops, the discharge valve opens, and material flows by gravity into the injection machine throat or dryer inlet. After a short discharge period the cycle repeats automatically under microcomputer control.

Typical installation layouts shown in the construction diagrams include:

• Direct machine mounting – The autoloader sits above or beside the injection moulding machine and feeds the machine hopper or throat directly.
• Combination with hopper dryer – The loader supplies a hopper dryer, which then feeds the dried material into the injection machine.
• Floor-level material pickup – A suction probe or wand is placed in a material barrel or bag at floor level; the loader draws material up to the elevated hopper.
• Compact standalone unit – The integrated motor, control box, and hopper form a self-contained package that can be moved between machines as production needs change.

Because the unit is a one-piece design, installation is typically faster than with systems that require separate mounting of a controller and a remote hopper. Electrical connection, suction hose routing, and level-sensor adjustment are the main commissioning steps.

Typical Applications

The EXTRUTEX One Piece Type Autoloader is widely used in the plastics processing industry:

• Injection moulding – Automatic feeding of virgin pellets, regrind, or masterbatch to single injection machines.
• Small-to-medium workshops – Compact footprint and simple installation make the series ideal where space and ease of use are priorities.
• Hopper dryer feeding – Reliable supply of material into drying hoppers before the material enters the machine.
• Colour and material changes – Quick cleaning and compact size support frequent changeovers.
• Regrind handling – Conveying of reprocessed material from beside-the-press granulators back to the machine or dryer.

In all of these applications the combination of strong suction, accurate control, effective filter cleaning, and clear diagnostics delivers reliable automatic feeding with minimal operator intervention.

Main Components and Construction Features

A complete EXTRUTEX One Piece Type Autoloader typically includes:

• High-speed commutator motor – Imported motor providing strong suction in a compact envelope.
• Material hopper – Capacity of 6 L or 12 L depending on model, with level detection (electric eye).
• Control box – Houses the microcomputer, contactors, and multi-fault indicator lamps.
• Operation controller – Convenient interface for start/stop and parameter setting.
• Suction port and tube – Standard 38 mm conveying tube calibre.
• Filter / strainer with external air-storage cleaning device – Thorough automatic dust removal.
• Electromagnetic valve and air storage – For controlled discharge and filter cleaning.
• Base and mounting points – Stable support for machine or floor mounting.
• Drop-material / discharge equipment – Reliable gravity discharge into the process.

The one-piece architecture integrates these elements into a single unit, reducing the number of external connections and simplifying both installation and relocation. All models are designed for continuous industrial duty in a typical moulding environment.

Technical Specifications

The table below summarises the standard EXTRUTEX One Piece Type Autoloader range. Custom configurations and options are available on request.

Why Choose EXTRUTEX – Austria Design, China Manufacturing

EXTRUTEX combines Austrian design discipline—focused on strong performance in a compact package, accurate control, and clear diagnostics—with efficient manufacturing in Nanjing and Shanghai. The result is a range of one-piece autoloaders that deliver reliable automatic feeding at a competitive global price point.

Key customer advantages include:

• Strong suction in a small footprint – High-speed commutator motor technology maximises performance while minimising space requirements.
• Simple installation – One-piece design reduces mounting and cabling complexity compared with separated controller/hopper systems.
• Accurate and reliable control – Microcomputer sequencing and electronic action detection keep fault rates low.
• Effective filter cleaning – External air-storage device maintains suction power with minimal manual intervention.
• Clear diagnostics – Multi-fault indicator lamps help operators resolve issues quickly and keep machines running.

Every unit is functionally tested before shipment, including verification of suction performance, control sequence, filter-cleaning action, and indicator-lamp operation.

Installation, Operation and Maintenance

Installation of an EXTRUTEX One Piece Type Autoloader is straightforward. The unit is typically mounted on the injection machine hopper, on a support frame above the machine throat, or on a stand beside the machine. The suction hose is routed to the material source (bag, bin, or dryer outlet), and the electrical supply is connected according to the motor nameplate. Level-sensor adjustment and basic timer settings complete commissioning.

Typical daily operation is fully automatic:

1. Confirm that the hopper discharge path is clear and the suction probe is correctly placed in the material source.
2. Switch the controller to automatic mode.
3. The system cycles through suction, conveying, and discharge according to the set parameters and level signals.
4. Multi-fault indicator lamps will illuminate if a problem is detected, allowing rapid diagnosis.

Routine maintenance includes periodic inspection and cleaning of the filter (assisted by the automatic air-storage cleaning device), checking of hoses and couplings, and verification that the electric eye or level sensor functions correctly. Because the unit is compact and integrated, access for these tasks is generally straightforward.

Safety and Diagnostic Features

Operator and process safety are supported by:

• Microcomputer control that prevents incorrect sequencing.
• Electronic action detection that monitors critical movements.
• Multi-fault indicator lamps that provide immediate visual feedback on the nature of any fault.
• Robust mechanical construction suitable for continuous industrial duty.

These features help maintain both process reliability and a clear understanding of system status for operators and maintenance personnel.

Customization and Options

While the standard range covers most common single-machine feeding needs, EXTRUTEX can discuss:

• Alternative hopper volumes or geometries.
• Special suction tube lengths or materials.
• Integration with specific hopper dryer brands.
• Custom control interfaces or signals for plant systems.
• Enhanced filtration or cleaning arrangements for dusty materials.

Customers are encouraged to provide details of material type, bulk density, required capacity, conveying distance and height, and machine layout so that the optimal model can be recommended.

Quality Assurance

EXTRUTEX manufacturing facilities operate under rigorous quality-management systems. Critical components (including the imported high-speed motor) are inspected, electrical assemblies are tested, and every finished autoloader undergoes a functional run-test before despatch. This disciplined approach ensures that machines arrive ready for reliable service.

Total Cost of Ownership Advantages

Beyond the purchase price, the EXTRUTEX One Piece Type Autoloader delivers ongoing economic benefits:

• Labour reduction – Automatic feeding eliminates manual loading of the machine.
• Compact footprint – Frees floor space that would otherwise be occupied by larger or separated systems.
• Low maintenance – Effective automatic filter cleaning and low fault rate reduce downtime and spare-part consumption.
• Fast installation – One-piece design shortens commissioning time and simplifies relocation between machines.
• Clear diagnostics – Multi-fault indicators reduce troubleshooting time when issues arise.

When evaluated over several years of continuous production, these factors make the one-piece autoloader a highly cost-effective choice for many injection moulding operations.

Conclusion – Compact, Strong, and Easy to Use

The EXTRUTEX One Piece Type Autoloader series provides plastics processors with a compact, high-suction, microcomputer-controlled solution for automatic material feeding. From the 250 kg/h SAL-300C to the 350 kg/h SAL-390 and SAL-400 models, every unit is designed to Austrian standards and manufactured with care in Nanjing and Shanghai.

Strong suction from an imported high-speed motor, accurate control, thorough filter cleaning, electronic action detection, and clear multi-fault indication combine to deliver reliable performance in a small, easy-to-install package.

Contact the EXTRUTEX team with your machine details, material data, and capacity requirements. Our engineers will recommend the most suitable model so that you can start benefiting from automatic, contamination-free material feeding as quickly as possible.