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The system automates the preparation of plates and samples by positioning the products to be molded and their corresponding identification labels on the 5-position loading conveyor. It is suitable for preparing samples made of rubber and thermoplastic materials, producing test specimens ready for measurement using material testing instruments.
The samples are transferred using a polyester film that wraps around the molded product, preventing mold contamination and contact between the parts. Upon exiting the press, the air-cooling station cools the molded products; the cutting device separates them and stacks them in the discharge container.
The PLC automatically manages the loading and unloading cycle and allows the molding cycle to be defined, ensuring uniform control of the molding time.
The press and feeder can operate autonomously or be interfaced with control software to: identify the product sequence and position on the loading table; produce unique identification labels for each sample; define the molding cycle for each sample and initiate the process upon meeting test conditions; record actual molding conditions, ensuring traceability of preparation methods.
The device makes it possible to automate plate and specimen preparation operations by placing the products to be moulded, and their identification labels, on the loading belt.
The device can be used for both rubber and thermoplastic product specimen preparation.
Specimens are handled by means of a Polyester film that wraps around the molded product, preventing mold contamination and mutual contact between the molded products.
The press control PLC automatically manages the specimen loading and unloading cycle and allows the definition of the molding cycle to be adopted ensuring uniformity in the control of the molding time.
The specimen unloading device includes an air cooling device to cool the molded products as they exit the press.
The cutting device allows the molded products to be separated and stacked in the unloading container.
Specimens prepared by compression molding form the basis for testing activities for rubber and plastic product testing laboratories.
The results obtained in testing are strongly affected by the quality and homogeneity of the specimens used.
The automatic repetition of the operations of:
- inserting the specimen into the mold
- execution of the molding cycle
- removal and cooling of the specimen at the end of the molding time
guarantee a repeatability in the production process of the specimen that could not be achieved by performing the operations manually.
In addition, the use of film eliminates the problems associated with mold contamination and mutual contamination between different products.
The activity of molding specimens can require a significant time commitment for the laboratory.
This is due to both the large number of molding cycles to be performed and the short time between two successive molds that require continuous interruption of other activities.
Manual execution of the molding cycle requires the presence of the operator for each individual operation of specimen insertion, activation of the molding wire, removal of the specimen, and eventual cleaning of the mold.
Automatic execution of the molding operations requires operator intervention only for the operation of placing the next 5 products to be molded on the loader.
In terms of safety and comfort, the use of the loader eliminates the residual risk associated with contact with hot surfaces and the need to wear heat-resistant gloves for specimen insertion and removal operations.
The press and loader can work in Stand Alone mode or can be interfaced with control software that allows you to:
- Identify the sequence of products to be printed by indicating the position of the loading table on which to place each specimen
- Produce identification labels related to the individual specimen that allow its unique identification
- Define the molding cycle to use for each specimen, adjust the press, and activate specimen insertion when test conditions are reached.
- Record the actual molding conditions of each specimen ensuring traceability of preparation methods.
The 5-position loading table allows for the positioning of products to be moulded within the positioning pads highlighted by green-colored LED lights.
The position sensor identifies the presence of the specimen and confirms the engagement of the positioning pad by changing color.
The specimen identification label, to be placed within the designated area, is moved along with the product to be printed to ensure correct product identification at the end of the cycle.
The interlocked protection door of the press protects the product insertion areas and the molding area to ensure total sucurity of the entire process.
In case the press is used with Gibitre Press-Check Software, the identification of the specimen, the printing of the identification labels, the choice of the pad where to place the specimen and the choice of the molding cycle according to the product are done by the software.
The PLC controller for the press is provided with a user-friendly Touch Screen Display and permits the free definition of the moulding cycles by setting:
• The displacements of the moving platen of the press,
• The thermal cycle (different temperatures of the platens and thermal gradients can be set within a moulding cycle)
• The pressure cycle (with the force control option installed).
40 Moulding cycles can be stored. Each cycle includes 30 moulding steps.
In case the press is used without software, you can manually select the moulding cycle to be used and start the automatic sample feeding system.
In case the press is used with the Gibitre Press-Control Software, you can select the moulding cycle for each individual sample. In this case, the press will automatically set the moulding conditions before starting the moulding of each sample.
At the end of the molding cycle, the molded product is automatically taken out of the mold and placed in the cooling chamber, and subjected to a flow of cold air for a settable time.
This interrupts the curing process of the specimen to ensure homogeneity in heat input to the different molds, and accelerates the cooling process of the specimens to make them available for use in the shortest possible time.
