Device for applying adhesive to rear or side of book block in binder, has actuating device with piezoceramic actuator for controlled wiper movement between application and null application positions

摘要

The device has at least one rotary application roller or disc that picks up adhesive from a trough and transfers it to the book block by rolling on the block, a wiper at an adjustable distance from the roller for regulating the application thickness and an actuating device for controlled wiper movement between application and null application positions with at least one contraction hose operated by compressed air and acting as a traction actuator. The device has at least one rotary application roller or disc (5) that picks up adhesive from a trough (4) and transfers it to the book block (2) by rolling on the block, a wiper (7) at an adjustable distance from the roller for regulating the application thickness and an actuating device (8,9) for controlled wiper movement between application and null application positions. The actuating device has at least one contraction hose (24a,b) operated by compressed air and acting as a traction actuator.