Conveyor washing cabins are designed for the washing of large parts, or large baskets containing several pieces, and they can also withstand very high loads. They are naturally suited to the railway sector, the manufacturing of heavy transport equipment, manufacturing of machines for earth movement, the lamination sector for the washing of rollers during maintenance, etc. The loading of the conveyor is performed outside of the cabin, with the conveyor placed at a height ergonomically close to the floor; this configuration entails a base for the tanks which are placed under the treatment cabin. Some configurations, however, avoid the need of providing a base as they have the whole of the cabin above ground and the conveyor loading floor plane placed at a height of about 1 metre from the floor, or the conveyor placed at a height ergonomically close to the floor during the loading and unloading and a hydraulic platform that raises it before entering the cabin. The principle behind the washing is that of spraying in order to obtain total uniformity of the treatment; the spraying system performs a continuous oscillation (back and forth) on a defined route, alternatively, the spraying system is stationary and it is the conveyor that performs the oscillating motion; this second solution avoids flexible piping which is always almost large sections. When the size of the conveyor and the resulting load are relevant, and at the same time the contaminant to be removed requires a strong dynamic in terms of flow and pressure, a mobile spraying portal is used, which alternately performs a route along the entire length of the cabin; this system allows to have very high specific pressures and flow rates, which for obvious reasons could not be produced with the piping as described above. The mobile portal solution, in the rest position, means there is free space all around the load allowing, where required, easy retouching operations using manual nozzles.
These models have a wide field of application due to their simplicity of use and good value for money. In addition, they have the advantage of also being able to run complex cycles automatically, freeing the operator from having to be constantly at the machine. They are typically used in the following applications: cleaning/degreasing of parts and components during maintenance (car engines, compressor and alternator motors, etc. to be disassembled or already dismantled for servicing or adjustments; washing and protection of shafts, supports, gearboxes, transfer boxes, car or locomotive components; sheet metal phosphodegreasing, small-scale fabrication and various pieces in their preparation for painting. All cabins in this series are equipped with a square platform-shuttle with rounded or circular corners, with dimensions up to 1400/1600 mm and with load capacities up to 10,000 kg. They can be equipped with a simple fixed sill, where to perform the loading/unloading operations or alternatively a 2 station translatable sill for the loading and unloading while running. These machines are designed to be extremely flexible and multi-faceted.
The treatment is carried out by spraying, with the conveyor automatically rotating on its vertical axis, through jets placed above, below and to the sides. It is possible to have up to 3 tanks, and as a result carry out joint processes, completed by blowing and drying with hot air.
Cabins with rotating drums are designed to be extremely flexible and multi-faceted. Their key strength is the ability to combine in one chamber more than one dynamic action, coupled with the ability to rotate the basket on its horizontal axis, allowing to achieve a high level of washing and chipping removal. They allow for parts of any nature to be treated, even geometrically complex ones, or small parts to be treated in bulk; delicate pieces are placed inside the basket and locked by a lid positioned at the filling level, small non-delicate parts are then loaded into the basket in bulk and are able to undergo a continuous stirring during treatment; finally, for large and heavy pieces, the rotation of the basket in the treatment phase is excluded. As mentioned, combined treatments can be performed, as within the chamber it can actually perform, separately or in sequence, spraying with medium pressure (up to 20 Bar), immersion with hydrokinetic action and ultrasonic phases. It is possible to have up to 3 tanks, and as a result perform joint processes, completed by blowing, drying with hot air or vacuum drying. Management with a PLC allows the presetting of an unlimited number of formulas, as a result the process steps are customisable depending on the parts to be treated. The baskets can be of any size, the machine can be equipped with a simple fixed sill, where to perform the operations of loading/unloading manually or alternatively with automated systems for the automated loading and unloading with possible management of basket storage.
These technologically advanced cabin machines are the result of the increasingly stringent demands required in the cleaning of components. Manufacturers must be able to wash parts with different characteristics and different quality levels, depending on their intended use, in a very precise manner. This is the case in the manufacturing of automotive, aeronautic, hydraulic and general mechanical engineering components. The parts to be washed, which may also be of significant size and weight, as well as very complex geometries, are positioned on a specific pallet with precise references; the pallet is automatically or manually placed inside the treatment cabin and then locked at the centre of a positioning table. The table is powered by an intermittent enveloping cam, so it can rotate in a continuous way or at predefined angular fractions; the accuracy of the system is decimal. The piece, managed in such a way, can interface with the washing robot placed inside the cabin and undergo a targeted treatment of all its cavities, blind holes, lubrication ducts, undercuts, etc. The washing robot is an anthropomorphic robot with 6-axis, with loads at the wrist and variable outreach dimensions depending on the piece and the application; it is a machine with IP67 protection characteristics, however, for washing applications, it is further protected with a full sheath specially designed to provide a watertight seal. Depending on the treatment to be performed, different working pressures, even up to 400 Bar, and various "tools" can be used, managed automatically by the robot that collects and deposit them as required from a special warehouse we have designed. It is clear that such versatility does not limit the flexibility of the system and the quality of treatment that is necessary to achieve. Our systems, unique in this aspect, are able to automatically manage washing "tools" (nozzles with different shapes, flow rates and spraying arrangements) and mechanical deburring "tools" (rotating brushes, discs, hole cleaners, etc.). These cabins can perform processes that are simple or joint and followed by several rinses, demineralised rinsing, blowing or drying with hot air. To guarantee the quality, safety and traceability of the process, the cabin can be equipped with one or more cameras managed by software that allows the recognition of the "code" to be treated and its correct placement position on the pallet.