Fixed Arms machines

Rotomachinery Group Fixed Arms Machines 3

Rotational molding machines for series products

The fixed-arm rotational molding machine is reliable, robust and simple, suitable for the production of items with rapid processing cycles and similar durations for high production capacity, such as pots and planters, polyethylene containers and tanks, outdoor toys, etc.

This model is particularly valued for its ease of use because operator interventions are not required to change process parameters, and so employees prepare for loading and unloading operations that have established and repeated frequency and duration.

Features

– Configuration of 3 or 4 mold-carrying arms that alternate;

- Max printable spherical diameter from mm. 1,400 to mm. 3,200;

– Independent temperature and rotation management for each arm.

- Chamber with high insulating power;

– High-efficiency oven ventilation to optimize cooking cycles;

– Electronic modular burner;

– Straight, offset, C-shaped mold-holder arms are fully interchangeable, with 1, 2, or 3 airways;

– Rapid molds balancing system;

– Cooling with high-performance fans;

– Operator interface with touch-screen;

– Perimeter consoles for flexible management of arm movements;

– Safety barriers and protections according to standards.

Features

Configuration of 3 or 4 mold-carrying arms that alternate.
– Maximum spherical diameter moldable from mm. 1,400 to mm. 3,200;
Independent temperature and rotation management for each arm.
Highly insulating chamber with no losses.
High-efficiency oven ventilation for optimized cooking cycles.
Straight, squared, C-shaped mold-carrying arms, fully interchangeable, with 1, 2, or 3 airways.
Quick mold balancing system.
– Direct gear transmissions without using chains;
Cooling with high-efficiency fans
Fixed Arms machines are suitable for producing items with fast processing cycles and similar durations.
Perimeter consoles for flexible arm movement management.
Safety barriers and protections according to standards.

Photos of the machinery

Additional info

The fixed-arm machine can be configured with a cooling chamber, and with 2, 3, or 4 interchangeable mold-carrying arms, choosing straight arms to produce mold groups or squared arms for the most voluminous rotomolded products, depending on the needs.

Having determined the duration of the critical stage of the process, which may be the formation of the mold in the rotational molding oven, the cooling stage, or the stage of extracting the rotomolded part, the molds will alternate at the same cadence as the arms move from one stage to the other simultaneously.

For each mold, however, it is permissible to vary the speed of the primary or secondary movement in order to achieve quality molds with uniform material distribution within the rotational mold. Once the optimal situation is reached, the software stores the molding process data for the future.

 

Optional provided

Each rotational molding machine can be equipped with optional features for better process control, energy savings, and equipment to increase productivity.

Process control

Zero position search

Incremental management of secondary rotation allows the steps of loading/unloading and insert introduction/removal operations to be programmed.

Process control

Industry 4.0

The machine is connected to company management software and receives data from production orders to be fulfilled and applies stored molding recipes. It interfaces with the local network to communicate data from each cycle aggregated by period, arm, item or material for logistics and quality business processes. Visualization of operating conditions can be made available on PC, tablet and cell phone. 

Process control

Teleassistance

A communication device is installed on the machine that allows us to remotely intervene for assistance, configurations, and software updates.

Process control

Automatic cycle management

Thanks to the constant detection of temperatures inside the mold, the molding cycle is optimized with automatic switching from one work station to the next. Each cycle will be optimized for different molding conditions (hot/cold oven--summer/winter--type and quantity change), and tuning of the optimal cycle for new molds will be immediate. 

Process control

Temperature detection

Inside the mold can be achieved with removable systems fully integrated into the process logic that transmit real time information to the supervisory and control system.

Energy saving

Ecomode

Ecomode is an operator-activated oven operating function that provides significant savings in energy consumption. Under certain predefined conditions (empty oven or temperature below a set point, 200° for example) the burner stops and energy consumption is reset to zero. In ECOMODE when the burner is off, the flue gas extractor works at idle, reducing the mass of expelled hot air and the inflow of clean cold air.

6 Stations (3 working, 3 resting)

– Cooking and formation of the product;

– Intermediate waiting phase for cooling;

Cooling of the molds.

– Intermediate waiting phase for mold opening;

- Waiting station for material loading;

Material loading in the molds.

– Configuration of 3 or 4 mold-carrying arms that alternate;

- Max printable spherical diameter from mm. 1,400 to mm. 3,200;

– Independent temperature and rotation management for each arm.

- Chamber with high insulating power;

– High-efficiency oven ventilation to optimize cooking cycles;

– Electronic modular burner;

– Straight, offset, C-shaped mold-holder arms are fully interchangeable, with 1, 2, or 3 airways;

– Rapid molds balancing system;

– Cooling with high-performance fans;

– Operator interface with touch-screen;

– Perimeter consoles for flexible management of arm movements;

– Safety barriers and protections according to standards.