Bookbinding machine

Patent metadata

Field	Value
Publication number	US-2020147991-A1
Application number	US-201716473873-A
Country	US
Kind code	A1
Filing date	Apr 18, 2017
Priority date	Apr 18, 2017
Publication date	May 14, 2020
Grant date	—

Abstract

A bookbinding machine calculates a rotational speed coefficient, which represents the percent change of a rotational speed of a pump 6 relative to the reference rotational speed of the pump, depending on a thickness of a book block P to be bound and a conveying speed of a clamper by use of a first function defining a relationship between the thickness of the book block and the rotational speed coefficient and a second function defining a relationship between the rotational speed coefficient and the conveying speed of the clamper, calculates the set value of the rotational speed of the pump based on the rotational speed coefficients and the reference rotational speed, and sets the rotational speed of the pump according to the set value of the rotational speed.

First claim

1 . A bookbinding machine having:
a nozzle type adhesive application mechanism arranged under a path of conveying a book block to be bound; and at least one clamper adapted to grip the book block while keeping the book block in a standing state and convey the book block along the path, wherein the nozzle type adhesive application mechanism comprises: a spray nozzle directed toward the path; an adhesive supply source; an adhesive supply pipe for supplying adhesive from the adhesive supply source to the spray nozzle; a pump connected to the adhesive supply pipe, whereby the adhesive sprayed from the spray nozzle is applied to a spine of the book block during the conveyance of the book block along the path, characterized in that the bookbinding machine further comprises: a pump rotational speed setting section calculating a rotational speed coefficient depending on both of thickness of the book block and a set value of a conveying speed of the at least one clamper by use of first and second functions, the rotational speed coefficient representing the percent change of a rotational speed of the pump relative to the reference rotational speed of the pump, the first function defining a relationship between the thickness of the book block and the rotational speed coefficient, the second function defining a relationship between the conveying speed of the at least one clamper and the rotational speed coefficient, the pump rotational speed setting section further calculating a set value of the rotational speed of the pump based on both the rotational speed coefficient and the reference rotational speed of the pump, and performing initial setting of the rotational speed of the pump according to the set value of the rotational speed.

2 . The bookbinding machine according to claim 1 , further comprising:
an input section for receiving inputs of correction magnifications of the rotational speed coefficient for two or more different thicknesses of the book block; and a function generation section generating as an alternative to the first function a third function based on the correction magnifications inputted into the input section, the third function being used for calculating the corrected rotational speed coefficient depending on the thickness of the book block, wherein, when the correction magnifications of the rotational speed coefficient are inputted into the input section prior to an operation of the bookbinding machine, the pump rotational speed setting section calculates the corrected rotational speed coefficient depending on the thickness of the book block using the third function, and further calculates the set value of the rotational speed of the pump based on the corrected rotational speed coefficient, and the rotational speed coefficient depending on the set value of the conveying speed of the at least one clamper calculated using the second function, and the reference rotational speed.

3 . The bookbinding machine according to claim 1 , further comprising:
an input section for receiving inputs of correction magnifications of the rotational speed coefficient for two or more different conveying speeds of the at least one clamper; and a function generation section generating as an alternative to the second function a fourth function based on the correction magnifications inputted into the input section, the fourth function being used for calculating the corrected rotational speed coefficient depending on the conveying speed of the at least one clamper, wherein, when the correction magnifications of the rotational speed coefficient are inputted into the input section prior to an operation of the bookbinding machine, the pump rotational speed setting section calculates the corrected rotational speed coefficient depending on the set value of the conveying speed of the at least one clamper using the fourth function, and further calculates the set value of the rotational speed of the pump based on the corrected rotational speed coefficient, and the rotational speed coefficient depending on the thickness of the book block calculated using the first function, and the reference rotational speed.

4 . The bookbinding machine according to claim 1 , further comprising:
an input section for receiving inputs of both first correction magnifications of the rotational speed coefficient for two or more different thicknesses of the book block and second correction magnifications of the rotational speed coefficient for two or more different conveying speeds of the at least one clamper; and a function generation section generating as an alternative to the first function a third function based on the first correction magnification inputted into the input section, the third function being used for calculating the corrected first rotational speed coefficient depending on the thickness of the book block, and generating as an alternative to the second function a fourth function based on the second correction magnification inputted into the input section, the fourth function being used for calculating the corrected second rotational speed coefficient depending on the conveying speed of the at least one clamper, wherein, when the first and second correction magnifications are inputted into the input section prior to an operation of the bookbinding machine, the pump rotational speed setting section calculates the corrected first rotational speed coefficient depending on the thickness of the book block using the third function and the corrected second rotational speed coefficient depending on the set value of the conveying speed of the at least one clamper using the fourth function, and further calculates the set value of rotational speed of the pump based on the corrected first and second rotational coefficients and the reference rotational speed.

Assignees

• Horizon Int Inc

Inventors

• Tago Shigeyoshi
• Fukuda Shigenobu
• Kitayama Shinya
• Fujiwara Kosuke

Classifications

• B42C19/08

  Conveying between operating stations in machines (conveyors in general B65G) · CPC title

• B42C9/0006 Primary

  by applying adhesive to a stack of sheets · CPC title

• B05C11/1023

  responsive to velocity of target, e.g. to web advancement rate · CPC title

• B05C11/1021

  responsive to presence or shape of target (B05C11/1018 takes precedence) · CPC title

• B05C5/0204

  for applying liquid or other fluent material to the edges of essentially flat articles · CPC title