Vision System

Category: Automation
Automatically Provide Robot Control with the Correct Path Number

Finishing automation uses several gun mover technologies to coat parts. Robot arms are a popular method of carrying the spray gun around the part. The robot control contains one or more preprogrammed paths and, when the part reaches the spray booth part detection switch, the robot executes the path and coats the part. If the line coats more than one part the robot systems requires some method to identify which path is required to coat the part.

Simple systems utilize an operator to manually select the part number from the robot teach pendent. Human/Machine Interface Terminals (HMI), RFID tags, and Computer Vision System are popular technologies to automatically provide the robot control with the correct path number.

Autoquip Vision Camera/Computer System

Autoquip manufactures and integrates most Part Identifications systems technologies. Our Flagship technology is a Vision Camera System with an extremely simple part teaching operator interface.

Autoquip Vision System offers a self-learn mode where a number of identical parts are introduced to the system and the Vision Computer records pertinent information about the part features and the subtle variations typical with identical parts on a moving line. On playback the Vision Camera/Computer system analyzes the image and reports to the painting robot control the correct path number or if the part is not found a “No Read” alert/alarm.

System Benefits: Vision System vs. HMI and RFID

The Vision System provides several advantages over HMI and RFID technologies. The biggest advantage is the system requires no human intervention. Both the HMI and RFID require an operator to first identify the part and either correctly enter the data on the HMI terminal or correctly program the RFID tag. The Vision System will automatically not paint a part not hung correctly or a paint fixture too bent for a good paint finish. The Vision System also has a better chance of stopping an atomizer crash. The Vision System can also detect color change flags and signal automation to sequence materials properly.

Vision Systems consist of one or more Vision Cameras, Vision Computer, Lighting Source, and Part Present Sensor. The system is normally installed on a flat area of the painting conveyor. When a conveyor hook activates the Part Present Switch the Vision Camera(s) and Lighting Source synchronize to produce a back lit image (shadow). The shadow image reduces image errors due to color and gloss. The image computer analyzes the shadow and processes a match algorithm to determine the best fit. User defined tolerance limits verify whether the best fit results qualify for a match.

The Autoquip Vision Computer includes a Status Terminal. During programming of the part the Status Terminal provides recorded image information and verifies storage of the image for later playback. In production, the Status Terminal outputs the match information and tolerance differences.


Vision System


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