一．Product Basics & Applicable Material Types

Q1: What types of bucket elevators does ASFROM offer for kneader production lines?

A1:ASFROM provides two standard bucket lifting solutions:

• Movable Bucket Elevator – Equipped with a rail system that allows the machine to move horizontally and serve two 110L internal mixers, improving production efficiency while reducing equipment investment.
• Fixed Bucket Conveyor – A stationary bucket elevator designed for a single kneader workstation without a moving rail system.

Both models are compatible with ASFROM internal mixers and double-cone extruder production lines for automatic material feeding.

Q2: What materials can these bucket elevators handle?

A2: Both models are designed to convey PE, EVA, rubber compounds, foam pellets, granules, and block materials. They are widely used in rubber mixing, EVA foam production, plastic compounding, and extrusion feeding systems.

Q3: What applications are these bucket elevators suitable for?

A3:They are ideal for:

• EVA foam production lines
• Rubber mixing plants
• Plastic compounding workshops
• Double-cone extrusion lines
• Automatic feeding systems for kneaders and extruders

The equipment replaces manual material handling, improves production efficiency, reduces labor costs, and ensures stable, continuous feeding.

二. General Technical Specifications for the Entire Unit (Specifications Common to Both Models)

Q4: What is the standard voltage and power rating of the electronic control system, and can the voltage be adjusted for export to overseas markets?

A4: The standard configuration for the domestic market is 380V, 50Hz three-phase AC power, with a total power rating of ≥2 kW; **the control voltage and frequency can be customized to meet the specifications of local industrial power grids worldwide**, supporting 208V/230V/400V/415V/480V three-phase power, with seamless switching between 50 Hz and 60 Hz. It is compatible with factory power supply standards worldwide, including Europe, the United States, Southeast Asia, the Middle East, and North America, and can be powered directly on-site without the need for an external transformer.

Q5: Are the main drive motor configurations the same?

A5: Both models come with the exact same standard configuration: a 1.5 kW main motor paired with a dedicated gearbox, providing ample torque to ensure smooth unloading even under heavy loads; the motor windings are synchronized with a custom voltage to ensure stable power output..

Q6:What are the standard working width and maximum hopper capacity?

A6:Standard working width: 800 mm; the hopper has a maximum rated load of 180 kg, and the actual load capacity can be fine-tuned based on material density.

Q7:General standards for control methods and transmission structures?

A7: Both support **manual/automatic dual-mode control**; the core drive system is a chain drive, which ensures stable operation and high load capacity.

Q8: Are there uniform standards for the materials used in racks and storage bins?

A8: The frame is made of structural steel and is fully welded, ensuring smooth operation without deformation; the storage trough and hopper are assembled from stainless steel sheets, making them corrosion-resistant, resistant to adhesive buildup, and long-lasting.

Q9: Are the standards for electrical component brands the same?

A9: All electrical components are certified under China’s 3C certification; the main contactor is manufactured by Schneider Electric of France, while the other relays and switches are from Sino-foreign joint-venture brands, ensuring low failure rates and suitability for 24-hour continuous production; for models customized for overseas markets, components are replaced to meet corresponding international voltage specifications.

Q10: What is the complete standard operation process of ASFROM Kneader Mixer?

A10: A unified 6-step standard operating procedure applies to both feeding types: 1. Before Feeding: Ram lifted, mixing chamber emptied, machine on standby; 2. Feeding: Feed main materials and additives through front or rear port; 3. Mixing: Pneumatic ram descends to apply pressure, twin rotors perform differential shear mixing; 4. Secondary/Tertiary Feeding: Add auxiliary ingredients in batches for continuous mixing and dispersion; 5. Discharging: The entire mixing chamber tilts forward by 140° to automatically discharge finished rubber compound; 6. Reset: Mixing chamber returns upright, ram lifts up, ready for the next production cycle.

Q11:Can the working length be adjusted?

A11: There are no fixed standards for the working length of either machine; they can be custom-made to meet the specific requirements of the customer’s on-site production line processes and factory layout.

三.FAQ on Specifications for Movable Buckets

Q12: What are the structure and advantages of ASFROM Kneader Mixer milling chamber?

A12: Dimensions: 2800 × 800 × 2800 mm; the machine weighs approximately 500 kg.

Q13: What are the specifications for the tracks used with mobile hoists? What equipment are they compatible with?

A13: Designed specifically for use with two ASFROM 110L internal mixers; each track is 6 meters long, with a total of four tracks running parallel on both sides, for a total track length of 24 meters; the equipment can move left and right along the tracks, allowing a single unit to feed both internal mixers alternately.

Q14:Besides a banbury mixer, what other equipment can a mobile hoist be paired with?

A14:The standard model can be connected to a twin-screw extruder to transport the material to the extruder feed stage after internal mixing.

四.FAQ on Specifications for Stationary Bucket Elevators

Q15: What are the overall dimensions and total weight of a stationary bucket elevator?

A15: Dimensions: 3000 × 800 × 2000 mm; the machine weighs approximately 400 kg. With its more compact design, it is suitable for use at a fixed workstation with a single internal mixer.

Q16:Do stationary bucket elevators have moving tracks? What operating conditions are they suitable for?

A16: No travel tracks; the entire unit is permanently installed. Suitable for production lines where a single internal mixer requires continuous feeding at a fixed location, where factory space is limited, and where multiple machines do not need to share a feeding system.

五.Product Comparison & FAQs on Differences

Q17: How do you choose between a mobile elevator and a stationary bucket elevator? What are the key differences?

A17: 1. For workshops with multiple internal mixers (2 x 110L internal mixers), choose **mobile models**: track-mounted, with one unit serving two mixers to save on procurement costs;
2. For single internal mixers with fixed workstations and limited space, choose **fixed-type bucket elevators**: lighter frame, smaller footprint, and simple installation;
3. Size differences: The mobile model is taller and wider (2800 high), while the stationary model has a lower profile (2000 high); the mobile model weighs 500 kg, and the stationary model weighs 400 kg.

Q18: Can a single mobile elevator feed two 110L internal mixers at the same time?

A18: Yes, the equipment moves laterally along the 6-meter track and automatically switches between the left and right internal mixers’ discharge stations, eliminating the need for additional feeding equipment.

Q19: Can a stationary bucket elevator be retrofitted with mobile tracks to convert it into a mobile model?

A19:We do not recommend modifying the equipment, as the frame and base structures of the two models are completely different. If you need a mobile solution, simply purchase a standard Movable Bucket mobile hoist.

六. Q&A on Structural, Material, and Operations & Maintenance Advantages

Q20: What are the advantages of stainless steel hoppers over ordinary carbon steel hoppers?

A20: The smooth surface of stainless steel prevents EVA and sticky rubber from adhering; residual material can be quickly cleaned with just water and an air gun, leaving no clumps or contamination. It is corrosion-resistant, and its service life is doubled under long-term mixing conditions.

Q21: What are the operational advantages of a structural steel welding frame?

A21: With high overall rigidity, it operates without vibration when lifting and tilting to unload a full load of 180 kg. It resists deformation even under long-term heavy loads, reducing wear on chains and motors and lowering maintenance frequency.

Q22: Are Schneider Electric components suitable for long-term rubber mixing operations?

A22: Designed to withstand the 24-hour continuous start-stop operation typical of internal mixing workshops, the contactors are impact-resistant and resistant to burnout, significantly extending the replacement cycle for electrical components and reducing after-sales maintenance costs. Models customized for export use Schneider components rated for corresponding international voltages, making them compatible with overseas power grids.

七.FAQs on Customization, Procurement, and Security

Q23: Which parameters of the two types of elevators support customization for non-standard specifications?

A23:Customizable: working length, body color, lifting height, track length/number (for mobile models), **multi-country voltage/frequency control systems**, explosion-proof control systems, hopper vibration discharge devices, and variable-frequency speed control systems.

Q24: Does it support an explosion-proof electronic control upgrade?

A24: Both models can be customized with a complete set of explosion-proof motors and explosion-proof control panels, making them suitable for production facilities handling flammable and explosive foaming materials. The explosion-proof systems can also be configured to support custom voltages for overseas markets.

Q25: Is there a risk of slippage or chain jamming when the equipment is operating at full capacity?

A25: The standard 1.5 kW gearmotor provides ample output torque and features a reinforced, wear-resistant chain. The electronic control system includes built-in overload and phase loss protection, with automatic shutdown and an alarm in case of overload, effectively preventing chain derailment and slippage. The protection module for models with custom voltages is designed to match local power grid parameters.

Q26: What safety features come standard on the equipment?

A26:1. Automatic protection against phase loss and overload;

2. Emergency shutdown via the emergency stop button;

3. Limit switches on the moving rail to prevent overtravel and derailment;

4. Interlock mechanism in automatic mode to prevent accidental operation; The protection system for models designed for overseas voltages is adapted to local voltage thresholds.

Q27: Is it possible to purchase the elevator separately, rather than as part of a complete set with the ASFROM internal mixer?

A27: Both procurement options are available:

1. Purchase as a complete set with the ASFROM 110L internal mixer;

2. Purchase the elevator separately to integrate with the customer’s existing internal mixers or extrusion equipment from other brands; electrical controls can also be customized to match the voltage standards of the target country as needed.

八.Custom Charging Voltage

Q28: What materials can ASFROM bucket elevators transport?

A28:They are designed for PE, EVA, rubber foam raw materials, widely used in rubber & plastic kneader and twin screw extruder production lines.

Q29: What are the two types of ASFROM bucket lifting machines?

A29:1. Movable Bucket Elevator: with moving tracks, match 2 sets of 110L kneaders, dimension 2800×800×2800mm, weight 500KG;
2. Fixed Bucket Conveyor: stationary installation, compact size 3000×800×2000mm, weight 400KG, for single kneader station.

Q30: What’s the maximum loading capacity of the bucket?

A30: Max conveying load is 180KG, the hopper is fully made of stainless steel for anti-sticking and easy cleaning.

Q31: What’s the standard electrical configuration, can voltage be customized for global markets?

A31: Standard power supply is 380V 50Hz three-phase, total power ≥2KW, 1.5KW main motor with reducer, manual & automatic dual control. **We support full voltage & frequency customization to fit local industrial power grids worldwide**, including 208V/230V/400V/415V/480V three-phase, 50Hz/60Hz optional. Main contactor adopts Schneider France brand, all electric parts pass 3C certification.

Q32: Can I customize track length, machine color and explosion-proof electric system?

A32: Yes. Track length, working length, lifting height, body color, explosion-proof control system and global voltage electric system are all available for non-standard customization according to factory layout and local power standard.

Q33: What is the advantage of movable bucket elevator vs fixed bucket conveyor?

A33: Movable type can slide along tracks to feed two 110L kneaders with one machine, save equipment cost. Fixed type is lighter and smaller, suitable for single fixed kneader workstation with limited space.

Q34: Do I need to add an external transformer if I order custom voltage for export?

A34: No. We reconfigure the motor, contactors and whole control cabinet to match your local voltage and frequency during production, the machine can be connected to factory power directly without extra transformer.