JPH0343080B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bookbinding device, and more particularly to a bookbinding device that can position a binding object at a set position (within a predetermined tolerance range; the same applies hereinafter) without depending on the strength of the straining of the binding object. Regarding equipment.

As a conventional bookbinding apparatus, for example, there is one in which a bound book is placed on a book crest located at a predetermined setting position, and thermo tape or adhesive tape is applied from the back of the bound book to the cover and the spine.

Figures 1A and 1B show this bookbinding device.
A book crest 2 on which the book crest 2 is placed is supported by a spring 3, and a clamp for raising and lowering the bound product 1 on the book crest 2 is provided in an opening 5a formed in the guide plate 5.
It is provided so as to sandwich the workpiece 1 between the two.
The above-mentioned thermo tape or adhesive tape 6 (hereinafter simply referred to as "tape") is placed below the guide plate 5.
A front press 8a and a rear press 8b that move horizontally are provided below the tape guide 7.

In the above configuration, the bound workpiece 1 is inserted between the guide plates 5 from above and placed on the bookrest 2, and the bound workpiece 1 is held by the clamps 4 from both sides. The clamped workpiece 1 is raised above the level where the tape 6 is located by the upward movement of the clamp 4, and then the tape 6 is moved to the tape guide 7.
It is supported when inserted. Following the insertion and support of the tape 6, the front press 8a moves horizontally, and when it stops below the back surface of the tape 6, the clamp 4 descends, and the bound object 1 is pressed against the tape 6 on the front press 8a, and the back of the bound object 1 is pressed. Tape 6 adheres to (Tape 6
When it is a thermo tape, the front press 8a and the rear press 8b are used as heater presses to thermally fuse it, and when it is an adhesive tape, it is bonded simply by pressing the presses 8a and 8b.
same as below). Next, after the front press 8a returns to its original position, the binding object 1 is lowered by the downward movement of the clamp 4, and the binding object 1 presses the bookrest 2 against the elastic force of the spring 3 and clamps it. 4 stops at the set position. Next, the front press 8a and the rear press 8b press and bond the cover and spine of the tape 6 located from both sides from the back of the bound product 1 to the cover and spine while the back of the bound product is pressed by the spring 3. Then, the pasting work of the tape 6 is completed.

However, in conventional bookbinding devices, the bound book 1
The book crest 2 is supported by the spring 3, which has a single spring constant regardless of the thickness of the book or the strength of the lever based on the material. If the tension is weak, the book crest 2 cannot be displaced by a predetermined amount between the guide plates 5 against the spring 3, and the book 1 cannot be lowered to the set position, and the book crest 2 cannot be lowered to the set position. This may cause a positional shift between the front press 8a and the rear press 8b, and the tape 6 may not be applied accurately from the back of the bound product 1 to the cover and spine. Conversely, if the spring constant is reduced, if the bound book 1 is thick and heavy, when the bound work is placed on the book crest 2 for the first time,
Because the boot crest 2 has descended too much, the clamp 4
In the final process, the clamping position becomes too high (the distance between the clamping position and the bottom edge of the bound product becomes long).
When the clamp 4 is lowered, the book crest 2 is lowered too much, resulting in misalignment between the bound workpiece and the front press 8a and the rear press 8b (contrary to the misalignment of the thin and stiff bound work mentioned above, the book crest 2 is lowered too much). ), and the tape 6 is removed in the same way as above.
may not be attached properly.

The present invention has been made in view of the above,
In order to be able to position the binding object at a set position without depending on the thickness of the binding object or the strain strength based on the material, the binding object can be positioned at a set position when a binding object with a predetermined strain strength presses against the book crest. supporting the book crest with a spring having a spring constant for a fixed displacement;
The present invention provides a bookbinding device that is provided with a displacement stopper that prevents the spring from being displaced when the spring is displaced by the predetermined amount or more.

The bookbinding apparatus according to the present invention will be explained in detail below.

Figures 2A and 2B show an embodiment of the present invention (only essential parts are shown, and parts common to Figure 1A and 2B are omitted). Even when descending, the bound object 1 is displaced by a predetermined amount.
It is supported by a spring 3 having a spring constant capable of positioning it at a set position, and a displacement prevention member 10 is fixed to the back surface of the spring 3 by, for example, a screw connection. The displacement prevention member 10 is
It constitutes a displacement prevention stopper that prevents the bookrest 2 from being displaced by more than a predetermined amount between it and the engaging surface 11a of the bracket member 11 that prevents the bookrest 2 from descending by a predetermined amount. are associated with each other while allowing relative displacement by the guide member 2a (fixed to the bookrest 2) and the guide slit 11b.

In the above configuration, the spring 3 has a small spring constant so that even when the thin and weak bound workpiece 1 is lowered, it does not bend and its back is displaced by a predetermined amount. Even when the product 1 is lowered, the product 1 can be positioned at the set position against the elastic force of the spring 3. Also,
Even if the bound product 1, which is thick and heavy, descends and the spring 3 tries to displace by more than a predetermined amount, the displacement is prevented by the contact between the displacement prevention member 10 and the engagement surface 11a, so the bound product 1 is kept at the set position. can be positioned. Thereby, the tape 6 can be properly attached to the bound product 1. Note that the configuration of the displacement stopper is not limited to that shown in the drawings; for example, a member may be provided between the spirals of the spring 3 to prevent it from shrinking beyond a certain level.

As explained above, according to the bookbinding apparatus of the present invention, the bookcrest is supported by a spring having a spring constant that is displaced by a predetermined amount when the bookcrest is pressed with a binding material having a predetermined stiffness, and the spring is Since the displacement stopper is provided to prevent displacement when the book is displaced by the predetermined amount, the workpiece can be positioned at a set position without depending on the thickness of the workpiece or the strength of the strainer based on the material.

[Brief explanation of drawings]

FIGS. 1A and 1B show a conventional bookbinding device, where A is a perspective view and B is a side view. FIGS. 2A and 2B show essential parts of an embodiment of the present invention, where A is a perspective view and B is a side view. Explanation of symbols, 1... Binding, 2... Book crest, 2a... Guide member, 3... Spring, 4... Clamp, 5... Guide plate, 5a... Guide plate opening, 6... Tape , 7... tape guide, 8a,
8b...front, rear press, 10...displacement prevention member, 11...bracket, 11a...engaging surface, 11b...guide slit.

Claims (1)

[Scope of Claims] 1. A bookbinding device that applies a bookbinding tape from the back of a bound book placed on a bookrest elastically supported by a spring to the cover and spine, wherein the spring has a predetermined stiffness. The book crest has a spring constant that causes the book crest to be displaced by at least a predetermined amount when the book crest is pressed, and the book crest has a displacement prevention stopper that prevents the book crest from being displaced by the predetermined amount or more. Bookbinding equipment.