Have you ever received customer complaints because of incorrectly cased books? I see this error occur time and again with my customers when manual interventions are required during various stages of the casing process.
A typical example occurs during production of the book case when the placement of the book case is (unintentionally) changed in the stack following quality checks or manual counting processes. As a result, the error cannot be detected visually and the stack is inserted into the gathering tray of the bookline with the incorrectly positioned case. The product is then inevitably wrongly inserted in the case without any further checks to ensure the correct positioning.
Another problem arises during the processing of case motifs that are difficult to distinguish visually. There is a risk under certain circumstances that some or all of the stack will be inserted in the gathering tray incorrectly. Consequently, a number of book blocks will be wrongly inserted in the book cases and, in the worst case, delivered that way. Orders delivered this way inevitably result in customer complaints – and given the cost pressure and tight margins for bookbinders, this is a scenario that should be avoided at all costs.
In these situations, the newly developed MMVision position control system can help. It offers the ideal quality check for the Diamant MC bookline by closely monitoring the process to ensure correct case positioning right before initial contact with the book block. Immediately following case separation from the gathering tray, a high-resolution camera uses image matching to check the positioning of the book case. At the start of the order, the first two book cases that are separated from the gathering tray are used as a reference to match the images. The image captured by the camera is displayed to the operator in real time on the separate MMVision monitor alongside the Diamant MC tele-commander.