Back glue applying machine

Abstract

The invention provides a gum applying machine, and belongs to the technical field of printing equipment. The problems that the rotating speeds of an existing gluing wheel and an existing glue scraping wheel cannot be independently adjusted; after gluing, the glue is not scraped in time; and glue spreading and scraping are not uniform. The device comprises a rack as well as a conveying device, gum applying devices and a drying device which are arranged on the rack, the number of the gum applying devices is two, the two gum applying devices are arranged at intervals in the conveying direction of a book body, the book body sequentially passes through the two gum applying devices and the drying device under the conveying of the conveying device, and gum applying and glue drying work is correspondingly completed twice. The two first driving mechanisms drive the two rubber wheels to rotate oppositely and reversely to be used for gluing and scraping correspondingly, the first adjusting device is used for adjusting the distance between the rubber wheels and the back of the book body, and the second adjusting device is used for driving the two rubber wheels to be away from or close to the back of the book body. The glue spreading device has the advantages of uniform glue spreading, rapid glue scraping, convenience in rubber wheel cleaning, adjustable rubber wheel rotating speed and capability of preventing glue from being solidified.

Description

technical field [0001] The invention belongs to the technical field of printing equipment, and relates to a back gluer. Background technique [0002] The existing hardcover version of the book will be packaged with a back strip at the spine, and the processing procedures of the packaging back strip generally include: gluing the back of the book body, drying the glue, wrapping the back strip, cutting the back strip and other processes. Some self-adhesive devices have the following problems: [0003] 1. The rubber wheel needs to be disassembled for cleaning. Too tight cooperation between the rubber wheel and the shaft is not conducive to disassembly and assembly. If the cooperation is too loose, it will cause the outer circle of the rubber wheel to jump, resulting in uneven gluing. In order to solve the problem of uneven gluing or empty glue only It can increase the amount of glue, and the increase in the amount of glue will cause the inner core of the book to seep the glue, ...

AI Technical Summary

Problems solved by technology

[0003]1. The rubber wheel needs to be disassembled for cleaning. If the fit between the rubber wheel and the shaft is too tight, it is not conducive to disassembly. The gluing is uneven. In order to solve the problem of uneven gluing or empty glue, we can only increase the amount of gluing. The increase of gluing amount will cause the inner core of the book to leak glue, and the books cannot be spread evenly;

[0004]2. After gluing, the squeegee is not timely, causing excess glue to penetrate into the gaps in the books. For example: the gap between the posts of the threaded book, As a result, there is too much glue between the two signatures or in the pinholes of the sewing thread, and the glue seepage books cannot be spread evenly;

[0005]3. The gluing wheel and the squeegee wheel share the drive mechanism, and the speeds of the gluing wheel and the squeegee wheel are adjusted synchronously, and the gluing wheel or the squeegee wheel cannot be adjusted separately Speed ​​to control the gluing effect;

[0006]4. The diameter of the glue wheel is small, the contact surface between the glue and the back of the book is small, and the effect of gluing and squeegeeing is not good;

[0007]5. The rubber wheel has been immersed in the rubber box, and the rubber box needs to be removed to clean the rubber wheel. It is inconvenient to clean the rubber wheel

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