Automatic visual inspection machine with single table for O-Ring and toroidal pieces in rubber

FOV 3-20 mm; Thickness 1-5 mm

SqueezeX is a visual inspection machine for the dimensional and surface control of o-rings and toroidal rubber pieces. It is able to find undetectable closed cuts and other critical defects such as cuts, flashes, voids, marks, stains, double-mouldings, out-of-roundness, out-of-concentricity, etc.. The production process of rubber articles can create cuts, mainly near the mould parting line, that are not visible to traditional vision systems. SqueezeX solves the problem by means of two patented technologies: the Squeezer station deforms the piece while two cameras simultaneously image the top and bottom surfaces of the part (View Through system).

The images thus acquired are transferred, without loss or disturbance, to a PC managed by a Real-Time operating system which performs both image processing and interaction with the operator through a simple and intuitive window interface. The Real-Time system allows excellent system stability and extremely high control speeds.

The acquired images are transferred without any data loss to a PC managed by a Real Time OS, which handles both image processing and the interaction with the operator through a user-friendly interface. The system’s stability is guaranteed even at extremely high inspection speeds. 

After image processing, parts are sorted into different collection areas depending on the pass/fail criteria. Statistics and production rates are available in real time, including the number and type of detected defects and the fill level of each collection area. It is also possible to save production reports with graphs and data and to integrate them into the local data management system for subsequent analysis. The statistical analysis software can calculate the process capability index (CPK), providing feedback on the production parameters.


  • Digital regulation of bright intensity for inside and outside surfaces
  • Possibility to control piece with reflecting surface
  • Good precision of dimensional and surface controls
  • No decadence of bright intensity


Independent measurement sensor for dimensional control of circular pieces, with the following characteristics:

  • Progressive scan high resolution B/W camera
  • Nearly zero distortion bi-telecentric lenses
  • Dedicated lighting system

Related control program features

  • Measurement of the inner/outer diameter
  • Measurement of the radial cross section
  • Measurements of general lengths, angles, radii
  • Flash defects inspection
  • Nicks defects inspection
  • Roundness inspection
  • Center distance


Laser thrubeam sensor is able to measure with extreme accuracy the planarity of the piece scanning the pieces along all of their dimension. It’s possible to measure the height only for pieces perfectly planar. The elevated precision of measuring is achieved using algorithms of elaboration of the signal that allow to eliminate any imperfection of the rotating table during its oscillation.


The software for analysis and control of components with complex shape allows the recognition of planar rotation of piece. It also recognizes the top and bottom sides and independently processes the image of the piece regardless of load position.

Control program

  • Irregular profiles identification and related control with reference to the sample profile
  • Control of the maximum and minimum height of holes and flash on linear and curvilinear profiles
  • Definition of multiple calipers and control of their dimensions
  • Control of the median and punctual variation of cord sections
  • Simultaneous analysis of surface defectiveness in many inspection areas


Material rubber
Color any color (1)
Min. Outside Diameter 3 mm
Max. Outside Diameter 20 mm
Min. thickness 1 mm
Max. thickness 5 mm
Productivity up to 6 pcs/s depending on the different operating modes
Loading system bowl feeder
Measuring range 9 mm
Dimensional resolution 0.001 mm
Accuracy of measurement (2) ±0.015 mm
Repeatability of measurement (±2σ) (2) ±0.025 mm
Camera B/W
Field of view Ø27.5 mm
Generic pieces max. height 0.75 mm
O-Ring max. height 1.5 mm
Dimensional resolution 0.001 mm
Optical resolution 0.013 mm
MPE Inside Diameter (3) 0.010 mm (4)
MPE Outside Diameter (3) 0.009 mm (4)
Camera B/W
Field of view 32x25 mm
Max. extermal diameter (5) 20 mm
Min. external diameter 3 mm
Min. thickness 1 mm
Max. thickness 5 mm
Dimensional resolution 0.001 mm
Min. optical resolution 0.020 mm/px
Minimum detectable defect size (6) 0.060x0.060 mm
Max. production in 1 shot mode 6 pcs/s
Max. production in 3 shots mode 3 pcs/s
Max. production in 10 shots mode 1 pcs/s
Antistatic bars
ABC (Automatic Blowing Checker)


Camera full color
Width of field of view 25 mm
Optical resolution 0.020 mm/px
Minimum detectable defect size (6) 0.060x0.060 mm
5L hopper
15L hopper
Bulk feeder 100L
DTC (Dirty Table Checker)
ABC (Automatic Blowing Checker)
Laminar flow cabinet
Laminar flow cabinet
Rotating warehouse
Packaging machine
Z conveyor belt


(1) Transparent to be tested
(2) Verified at temperature of 20°C ± 1°C
(3) MPE = maximum permissible measurement error according to ISO/IEC Guide 99 - International Vocabulary of Metrology (VIM) - Basic and general concepts ad associated terms, 4.26
(4) Verified on full field of view on average diameters and average cross section of oring at 20°C ± 1°C
(5) With 50% crushing
(6) On full field of view, minimal variation of 20 points of tone difference in adjacency


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