GLUE APPLICATION UNIT FOR PERFECT BINDING MACHINE

摘要

The gluing unit is provided with a sideways glue-applying member which can engage with throat regions (s) on both sides of a spine (r) of a book body (P), and the lateral glue-applying member is provided with a pair of scrapers (7, 7). Each scraper of the pair of scrapers is configured from an elastic rod-shaped main body (7a) and a scraping part (7b). The rear ends of the main bodies (7a) are fixed to a frame (1) on both sides outside the path. The scraping parts (7b) are positioned further downstream than the top surface of a glue application roller (3) in the path. While a portion of the book body that projects downward passes between the pair of scrapers, the scraping parts engage with the throat region on both sides of the spine of the book body.

主权项

1. A glue application unit built in a perfect binding machine and arranged under a path of a clamp unit of the perfect binding machine so as to apply glue on back margins located at both sides of a back face of a book block as well as the back face while the clamp unit passes through the glue application unit, both the back face and the back margins protruding downwardly from the clamp unit, the glue application unit comprising:
a frame; a glue tank attached to the frame and filled with glue; a glue application roller arranged in the glue tank and attached to the frame for rotation about a shaft thereof extending across the path of the clamp unit, the glue application roller applying the glue to the back face of the book block; a motor attached to the frame and rotating the glue application roller, a part of the glue application roller being soaked in the glue of the glue tank, the glue application roller engaging with the back face of the book block at its top face covered with the glue; side glue application members attached to the frame and arranged at both sides of a path of a portion of the book block protruding downwardly from the clamp so as to engage with the back margins of the book block, the side glue application members having a pair of scrapers, each of the scrapers being composed of an elastic rod-like or elongated plate-like body and a scraping portion provided at a leading end of the body, the scrapers obliquely extending in a direction of movement of the book block from the outside of the path of the downwardly protruding portion of the book block into said path in such a way that the scrapers cross each other in an inverted V shaped configuration to close off said path, tail ends of the bodies of the scrapers being attached to the frame or the glue tank outside said path, the scraping portions of the scrapers being positioned at the downstream of the top face of the glue application roller, whereby the scraping portions engage with the back margins of the book block by the elastic biasing of the bodies while the downwardly protruding portion of the book block passes between the scrapers.