MACHINERY | CONTROL
Right: Tools such as new analytical software help Bausano tailor its machines to customer needs
the defects in 3D for deeper analysis. The system can perform 360° in-process inspection, regardless of product orientation in the measurement field.
“FlawSense is a high-performance inspection system that uses the most advanced laser triangula- tion technology and is more accurate and capable than conventional inspection systems,” said Chad Walker, product manager at LaserLinc. LaserLinc says that traditional systems typically
offer limited measurement points per sensor, are unable to measure the full contour of the product or see false positives due to the presence of text and labels. FlawSense digitises thousands of individual measurement points around the contour of the product to reveal the smallest surface anomalies. It then produces a 3D point cloud image that can be manipulated for further analysis. The system can detect surface defects down to 5 microns – and claims 10 times better resolution than camera-based systems. The system is suited for inspecting high-value
products such as high-pressure hose for automo- bile and aerospace applications.
Machine analysis Bausano says it has introduced a number of tools and services to help it tailor its machines exactly to customer needs. These include new analytical software and extra
Below: A flow sensor from Woywod uses ultrasonic waves to monitor a dosing unit screw in real time
space at its facility for materials testing. Before it designs a system, the company says it carries out an analysis using a capillary rheometer, which studies the behaviour of a material as it flows and deforms. This helps to understand its viscosity as a function of the shear rate gradient – allowing Bausan to optimise head design and fine-tune the design of screws. The information is also processed using a plasto-
graph. Here, the customer’s starting materials are fed into the chamber, where they are heated and undergo shear stresses between two counter-rotat- ing rotors. During machining, the torque is meas- ured, which provides information on the viscosity of the molten material – indicating any changes produced by machining on the system (such as gelation, branching or degradation). “Our distinctive feature lies both in the range of
pre-design services, which allows us to tailor-make the best extrusion line,” said Giovanni Bausano, R&D manager at the company. Before setting up a new machine at the custom-
er’s production site, Bausano runs the line in its own factory to validate the design assumptions and test its performance, operation and noise levels.
Monitoring flow Woywod has introduced a flow sensor that uses ultrasonic waves to monitor – in real time – whether the screw of a dosing unit is conveying material to the target area. Volumetric and gravimetric dosing equipment can encounter conditions that prevent material from being discharged from the dosing unit, such as bridging of material in the storage hopper. Even when using gravimetric routines, there is a variable time offset due to causality checks of the measured values in the gravimetric measurement routines. It can take several minutes before finding that no material is being discharged – and an error is displayed via the control. This can have serious consequences in the production process, says the company. As an example, the short term non-dosing of an additive such as a catalyst, UV stabiliser or blowing
26 PIPE & PROFILE EXTRUSION | Spring 2024
www.pipeandprofile.com
IMAGE: WOYWOOD
IMAGE: BAUSANO
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