JPS6259991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a glue scraping doctor mechanism for a glue roller of a bookbinding machine in the bookbinding and gluing process of slips, notebooks, and documents, and particularly relates to a glue scraping doctor mechanism for a bookbinding machine's glue roller. This invention relates to an improvement of a doctor mechanism used in a gluing machine equipped with a gluing roller.

Conventionally, in a gluing machine used for binding backs of books, in which the gluing roller 7 is arranged perpendicularly or diagonally to the product as shown in Fig. 1, the gluing roller 7 is supplied from above. Glue is supplied by flowing down through a nozzle 6, and the thickness of the glue film to be applied to the surface of the gluing roller 7 is kept constant by a scraping doctor 11 in contact with the gluing roller 7, and glue is applied to the side or back of forms 8. However, when the side or back of the object to be coated is thin, such as forms, there is no problem with this method, but when the object is thick, the adhesive roller 7 is used to flow the glue from the top of the roller. With the single-sheet doctor 11 that acts on the entire length in the direction of the rotating shaft 16, only the angle of the doctor can be adjusted, and sometimes it is not possible to partially dispense or squeeze the glue along the axial direction of the roller. Furthermore, in the conventional case, if the glue roller 7 is made of a hard material such as metal, it is possible to form a uniform glue film thickness from top to bottom with a single-sheet doctor; In the case of a type of fabric, the glue soaks into the roller itself, so even if you apply a doctor constant to the gluing roller to form an appropriate coating film, it will not be uniform because the glue has soaked into the roller itself. Therefore, the present invention aims to solve the above problem by improving the doctor mechanism.

To explain the gist of the present invention, a gluing roller is arranged vertically or obliquely, a supply nozzle 6 for supplying glue is provided on the upper circumferential surface of the roller, and a gluing roller rotation shaft 1 is provided.
In the doctor mechanism of a bookbinding and gluing machine for books such as forms, which is equipped with a glue scraping doctor 11 that contacts the roller circumferential surface at a certain angle in parallel to 6, the doctor holder board is divided into appropriate widths, and This doctor mechanism for a gluing roller is characterized in that a plurality of divided doctor blades arranged side by side in a manner that can be taken in and taken out are installed so that the glue coating film can be adjusted in the axial direction of the gluing roller.

The present invention will be further explained in detail with reference to the drawings.
FIG. 1 is a perspective view of a conventional pasting machine doctor mechanism, FIG. 2 is a plan view of the doctor mechanism of the present invention, and FIG. 3 is a side view of the doctor mechanism of the present invention. A glue supply nozzle 6 for supplying and flowing down the glue is provided on the upper circumferential side of the rotating gluing roller 7, and the roller 7 rotates while the circumferential surface is in contact with the side or back of an object to be coated such as forms 8. Guides 9, 9 are provided at both ends of the bottom plate 12 of the doctor holder 1 in Fig. 3.
A plurality of doctor blades 2 divided into appropriate widths are installed in parallel between the guides, and attached to the bottom plate 12 of the holder 1 through the fixing bolt 5 and the long hole 13 of the doctor blade 2, opposite to the blade part 14 of the doctor blade 2. The adjusting bolt 3 and the fixing nut 4 are attached to the bearing side plate 15, and the gluing roller is attached at a certain angle parallel to the axis 16 of the gluing roller 7 using the doctor holder attachment part 10 provided at one end of the holder 1. It is designed to be attached to the main machine frame of the gluing machine so as to be in contact with the circumferential surface of the gluing machine.

As shown in the side view of FIG. 3, in the present invention, the doctor blades 2 of appropriate width are divided and arranged in parallel on the bottom plate 12 of the holder 1.
The doctor blade 2 is fixed to the bottom plate 12 by a long hole 13 of an appropriate length and a bolt 5 provided in each doctor blade 2 so that it can be taken in and out in the horizontal direction in the drawing along the upper and lower end guides 9, 9. To adjust the left and right direction of the doctor 2, place the end of the doctor 2 opposite the blade part 14 on the holder 1.
This can be done by positioning the tip of the adjustment bolt 3 attached to the bearing side plate 15 integrally formed at the end. Each divided doctor 2 is inserted into and removed from the holder 1 by loosening the fixing bolt 5 and fixing nut 4.

The divided doctor mechanism of the present invention can scrape off the glue supplied to the circumferential surface of the glue roller 7 at various locations in the width direction of the roller 7 with the doctor 2,
This is to set the amount of glue coating at each location in the width direction of the roller.

In the present invention, the above-mentioned gluing roller 7 shown in FIG. In the doctor mechanism of a bookbinding gluing machine for books such as forms, which is equipped with a glue scraping doctor 11 that contacts the roller circumferential surface at a certain angle, a single-sheet doctor 18 is inserted into and taken out from the doctor holder board 1 in FIG.
, and the plurality of divided doctors 2 are provided on the doctor.
This invention is characterized in that it is possible to adjust the amount of glue applied in the direction of the glue roller shaft 16 by attaching it to the doctor holder plate 1. An upper outer guide 19 and a lower outer guide 19' are provided integrally, side plates 20 and 21 are provided at right angles to the upper outer guide 19 and lower outer guide 19', respectively, and one doctor 18 is attached to the holder board 1. The adjusting bolt bearing side plate 2 is fitted on the end opposite to the blade part 29 of the one-piece doctor 18 so as to be slidably guided by the guides 19, 19' at both the upper and lower ends of the blade.
2 is integrally provided, and an upper intermediate guide 2 is provided in sliding contact with the guides 19, 19' at the upper and lower ends of the doctor 18.
3, and a lower intermediate guide 24 is provided integrally with the side plate 22, adjustment bolts 25 and 27 are provided which are attached to the side plates 20 and 21, respectively, and fixing nuts 26 and 2 are provided.
8 allows the bolt to be fixed or loosened. A plurality of divided doctor blades 2 are arranged in parallel on the bottom plate 30 of the one-piece doctor blade 18, and long holes 32 are formed in the doctor blade 2, and fixing bolts 31 are installed in the bottom plate 30 of the doctor blade 18.
It can be put in and taken out. Each doctor 2 is connected to the intermediate guide 23, the intermediate guide 23,
It is regulated along the inside of 24, and can be taken in and out of the holder disk 1 and the single-sheet doctor 18. The one-piece doctor 18 and the divided doctor 2 can be individually inserted into and taken out from the holder board 1, and the doctor 18 has a long hole 3 formed in the upper end.
A fixing bolt 36 that fits into the hole 7 is fixedly attached to the bottom plate 12 of the holder board 1. In FIG. 5, eight divided doctors 18 are installed in the vertical direction, but the number and width of the divided doctors 18 are not limited.

The operation of the doctor mechanism described above will be explained according to FIG.
The blade part 29 of the doctor 18 is slidably attached to the bottom plate 12 surface of the doctor 18 by loosening the fixing bolt 36.
The outer side of the side plate 22 on the opposite side is pressed by the adjustment bolts 25 and 27 to project forward (to the left in the drawing), and the blade portion 29 can be brought into contact with the circumferential surface of the gluing roller 7. The divided doctor 2 is attached to the bottom plate 30 of the doctor 18 with a bolt 31, and the adjustment bolt 35 connected to the side opposite to the blade part 33 of the doctor 18 in a freely rotating state is attached to the side plate 22.
Loosen each fixing bolt 31 of the divided doctor 2, rotate the adjustment bolt 35, and move the blade 33 of each doctor 2 to the blade 29 of the doctor 18.
It is made to protrude further and come into contact with the circumferential surface of the gluing roller 7. In this way, the glue supplied to the circumferential surface of the gluing roller 7 by the supply nozzle 6 in FIG. The glue is applied to the side or back of the object to be coated, such as forms 8.

The present invention makes it possible to even out the amount of glue deposited on the circumferential surface of a roller made of a porous yet flexible material, such as sponge, rubber, Molton, or wool, in the axial direction of the roller using a divided doctor. Even when doctoring a glue roller made of a flexible material, it is possible to adjust the amount of glue scraped without causing unevenness, and the application position can be adjusted as appropriate depending on the width of the document to be applied. It is effective in improving the efficiency and quality of the gluing process in the binding process of documents such as slips and notebooks, or booklets.

[Brief explanation of the drawing]

Figure 1 is a schematic perspective view of a conventional gluing machine;
FIG. 3 is a side view of the doctor according to the invention, and FIGS. 4 and 5 are a plan view and a side view illustrating other embodiments of the doctor mechanism according to the invention. 1...Doctor holder, 2...Doctor, 6
... Glue supply nozzle, 7 ... Gluing roller, 8 ... Subject to be coated, 9 ... Guide, 11 ... Doctor, 18
...Doctor, 23, 24...Guide.

Claims (1)

[Claims] 1. A gluing roller is arranged vertically or obliquely, and a supply nozzle for supplying glue is provided on the upper circumferential surface of the roller,
In the doctor mechanism of a bookbinding gluing machine for forms, etc., which is equipped with a glue scraping doctor that is parallel to the gluing roller rotation axis and touches the roller circumferential surface at a certain angle, the doctor holder board is divided into appropriate widths, and the doctor holder board is A doctor mechanism for a gluing roller, characterized in that a plurality of divided doctors are installed in parallel so that they can be taken in and taken out, and the amount of glue applied can be adjusted in the axial direction of the gluing roller. 2. A patent claim characterized in that a single doctor is provided that can be taken in and out of the doctor holder disk, and the plurality of divided doctors are attached to the doctor, so that the amount of glue applied in the axial direction of the glue application roller can be adjusted. A doctor mechanism for a glue roller according to item 1.