JPH0745267B2 - Booklet binding method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to booklet bookbinding methods, particularly bookbinding methods such as passports and bank passbooks, which are used for machine reading and are effective in preventing tampering, and particularly robust book binding bookbinding methods. Regarding

2. Description of the Related Art Conventional thread binding booklets such as passports employ a method in which a flat overlapping leaf forming an inner page is bound with a sewing machine, and a cover is attached so as to conceal the thread on the back side.

Problems to be Solved by the Invention In the thread binding booklet such as the passport, the sewing thread is required to be as thin as possible due to the requirements of machine reading, and the robustness to withstand repeated opening and closing is required. It is required to be bound and bound.

That is, if the binding thread is thick, it is possible to perform strong bookbinding, but the thread protrudes excessively from the spread surface, which hinders machine reading, and if a thin synthetic resin thread is used, it will not only increase the cost. The heat generated when sewing the sewing machine causes thread breakage, making automatic high-speed bookbinding (high-speed sewing machine thread binding) difficult.

The present invention contemplates a bookbinding method for a booklet that can be unravelly and robustly bound using thin binding threads and that is difficult to tamper with.

Means for Solving the Problems The present invention is to solve the above-mentioned problems, in which a flat overlapping leaf is bound with a thread using a sewing machine, and then the thread binding stitch yarn on the back side of the flat overlapping leaf is bound. Booklet binding in which an adhesive is applied to the binding yarn to impregnate the binding yarn with its capillary action, and a cover is attached to the leaf on the back side having the threads used to impregnate the adhesive to form a booklet. Pertaining to the law.

Further, as the booklet binding method, the flat stitching leaf is fed in parallel while being thread-stitched using a sewing machine, and the adhesive pouring out of the sizing nozzle arranged directly below the stitches on the back side of the stitching flat stitching leaf and the gap between the stitches. There is a gap in the gap, and the adhesive spouted from the adhesive spout to the gap is impregnated by the capillary action of the binding yarn into the above-mentioned thread under the above-mentioned flat feed to form a booklet by attaching a cover sheet. is there.

Further, preferably, in the above invention, the thread (front thread) on the side where the sewing machine needle is stabbed is impregnated with the adhesive, and a cover is attached to this.

Action The thread binding booklet obtained by the present invention is bound with the binding thread and then hardened by impregnation with the adhesive, so that robust thread binding can be performed even with a thin binding thread, and in addition, the adhesive is applied from the back stitches. Since it is made to adhere and impregnate, the above-mentioned robust thread binding can be performed without composing adhesive swelling on the spread side thread, and since there is no swelling of the adhesive, the throat of the thread binding portion is made 180 degrees flat. It can be opened, and machine reading can be performed without any problems.

Further, the adhesive can be used to firmly penetrate the puncture hole by utilizing the capillary action of the binding thread, and the binding thread can be co-attached to the leaf while being firmly integrated with the leaf, thereby enabling strong thread binding.

Further, when the adhesive is supplied, there is a gap between the spout of the sizing nozzle and the yarn so that the adhesive can be dispensed and the binding yarn can be impregnated. It is possible to concentrate on the binding yarn of the yarn and provide an appropriate amount of the adhesive without adhering to other regions or causing adhesion unevenness, to induce the good capillary action and to promote the penetration into every corner.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

In FIG. 3, the leaf 1 is flatly laid as shown in FIG. 1 (A) and is flatly received by the bottom guide 2 while the ears are regulated by the side guides, and the pusher 4 pushes the bottom guide 2 on the bottom. It is supplied to a thread-stitching sewing machine 5 arranged on the conveying path, and in the thread-stitching step, the flat overlapping leaf 1 is sandwiched between an upper belt 6 and a lower belt 7, and as shown in FIG. Thus, thread binding in the feeding direction is performed at the center of the flat overlapping leaf 1.

As described above, after thread-binding is performed on the flat stacking leaves 1 which are successively conveyed, the thread 9 for connecting the respective thread-stitching flat overlapping leafs 1 is cut by the cutter 9 to separate the thread-stitching flat sheets. The overlapping leaf 1 is pressed flat by the press roll 10 on the thread 11 and the leaf surface, the thread binding portion is flattened, and subjected to the bonding step.

On the exit side of the press roll 10, there is provided an inclined transport path 12 that travels in an upward slope, and a yarn binding flat stack provided on the inclined transport path 12 by a pusher 13 that runs endlessly along the inclined transport path 12. While pushing the tail of the leaf 1 to align the ears, an adhesive is poured out by the sizing nozzle 14 onto the thread stitch 11 formed on the back side of the above-described flat stitch leaf 1 for binding the thread, and the flat pile leaf 1 is moved along with it. Then, the sizing is performed on the entire length of the thread 11.

The gluing nozzle 14 is operated in the process in which the yarn binding flat stacking leaf 1 moves on the inclined conveying path 12. That is, the gluing nozzle 14 has its pouring outlet 15 arranged upward so as to be perpendicular to the inclined conveying path 12, and the pouring outlet 15 is arranged in the fifth direction.
As shown in FIGS. 6 and 6, a space W is provided between the yarn 11 and the adhesive 16, and the adhesive 16 is supplied while keeping the space W constant. The adhesive 16 is extruded from the spout 15 of the sizing nozzle 14 into the gap W by the head pressure of the sizing tank 17 in the form of a bulge due to surface tension, and comes into contact with the thread 11. As a result, the thread 11 does not come into direct contact with the nozzle 14 but contacts the adhesive 16 extruded into the space W and runs while pulling the adhesive 16 to form the thread 11 as shown in FIG. 1 (C). The adhesive 16 is attached to the entire length of the binding thread 8 to be used. As shown in FIG. 2 (A), the adhesive 16 is punctured by the capillarity of the binding thread 8.
It penetrates into 18 and binds the binding yarns 8 together, and at the same time, solidifies with the leaf 1 to achieve a robust yarn binding.

Further, by applying the adhesive 16 from the slanted lower end to the upper slanted upper part of the thread binding flat laminated leaf 1 in the slanting upward process, the adhesive is made to flow toward the slanted lower end side, so that the adhesive application and impregnation are more uniform. And

The glue nozzle 14 is a nozzle holder, for example, a gear.
19 is used to enable vertical movement, and the vertical movement allows adjustment of the interval W. The interval W is detected, for example, optically by the detector 20, and the gear 19 is operated by the detection signal to adjust the interval.

For example, an upper limit stopper 21 is attached to the nozzle 14, and the upper limit stopper 21 contacts the bottom guide 2 to set a minimum interval and prevent contact with the yarn 11.

The glued flat stitched leaf stack 1 is returned horizontally from the end of the inclined conveying path 12 and is dried by the pusher 13 at the drying section 22.
After accelerating the solidification of the adhesive, it is subjected to the cover sheet bonding step.

A vacuum foil 23 for cover sheet supply is arranged at a lower position of the transport path 12, and the cover sheet 24 is adsorbed near the bottom dead center of the vacuum wheel 23 and transferred to the top dead center along the peripheral surface thereof, In the transfer process, an adhesive is applied to the surface of the cover sheet, and then the cover sheet 24 is pressed to the back side of the adhesive-impregnated thread binding flat stacking leaf 1 by a stacking press roll 25 in a timely manner. () Is attached as shown in FIG. By applying the cover sheet, as shown in FIG. 2 (B), the spine on the back side is hardened by the adhesive impregnation, and further double-hardened by the adhesive agent for sticking the cover sheet, and further hidden by the cover sheet. To be done.

The thread binding booklet 1'formed in this way is stacked in a stacking section 26, and after being piled up in a fixed amount, it is supplied to the flat press 27, and a strong flat pressing force is applied from above to fix the adhesive. Adjust to a flat shape. The yarn binding booklet 1 ′ is delivered in the above-mentioned integrated state and is folded in two along the line 11 which is known at the delivery destination, or is folded in the latter step of the flat press 27. In any case, it is needless to say that the half-folding is performed so that the cover 24 is on the outer surface side.

FIG. 4 shows another embodiment for carrying out the present invention. In the embodiment, the flat lap leaf 1 which is thread-stitched by using the sewing machine 5 is inverted by a reversing device 28 composed of, for example, an impeller,
A case is shown in which the thread on the side where the sewing machine needle is inserted (front thread) is located on the back side of the leaf 1 and the sizing and the covering are applied to the front thread. The impeller has a large number of radially extending blades 29. The yarn binding flat overlapping leaf 1 is supplied to the accommodating portion formed between the blades 29, and the pusher pusher 30 is rotated at a position of 180 degrees. Due to the inclined transport path
Take it out to 12. As a result, the above-mentioned reversal is performed, and the front stitches are located on the back side.

The thread on the piercing side of the sewing machine needle is called the front thread, and the thread on the stab side is called the back thread.The front thread is relatively easy to tamper with the principle of sewing, but if the back thread is tampered, it is difficult to restore it. Yes, according to the above example, the back thread that is difficult to restore is arranged on the spread side, and the front thread that is easy to tamper with is the back side,
By impregnating the surface threads with the adhesive as described above and attaching the cover sheet, it is possible to provide a thread binding booklet 1'which is more difficult to tamper with.

EFFECTS OF THE INVENTION As described above, the present invention is preferably implemented as a bookbinding method for a booklet that is robust and difficult to tamper with. That is, since the thread binding booklet obtained by the above bookbinding method is bound with the binding thread and is hardened by impregnation with the adhesive, it is possible to use the thin binding thread and perform the robust thread binding even with the thin binding thread. .

In addition, since the adhesive is made to adhere and impregnate from the thread on the back side of the flat laminated leaf, the above-mentioned robust thread binding can be performed without forming the swell of the adhesive on the thread on the spread side,
Since there is no swelling of the adhesive, the throat of the thread binding part can be opened 180 degrees flat, machine reading can be performed without hindrance, and a thread binding booklet suitable for passports and bank passbooks can be provided.

Further, by utilizing the capillary action of the binding yarn of the adhesive, it is possible to satisfactorily promote the penetration of the binding yarn into the puncture hole so that the binding yarn can be co-attached to the leaf and to be firmly integrated with the leaf, so that a strong yarn binding can be performed.

Further, when supplying the adhesive, there is a gap between the spout of the sizing nozzle and the yarn so that the adhesive can be poured out and impregnated into the binding yarn. Adhesive to a necessary area and without causing adhesion unevenness, providing an appropriate amount of adhesive by concentrating on the binding yarn of the yarn, eliciting the above-mentioned good capillary action and promoting penetration into every corner, and a sound adhesive Impregnation can be performed.

[Brief description of drawings]

1A to 1D are front views of a flat stack leaf and a booklet for explaining the basic idea of the present invention in the order of steps, and FIG. 2A is a sectional view of a main part of the flat stack leaf for explaining an adhesive impregnation state in FIG. 1C. 1B is a cross-sectional view of a main part of a booklet for explaining a cover pasting state in FIG. 1D, FIG. 3 is a side view schematically showing an example of a booklet binding device for carrying out the present invention, and FIG. Is a side view of a booklet reversing device that constitutes another example, FIG. 5 is a front view showing an example of an adhesive impregnating device, and FIG. 6 is an enlarged front view of the main parts showing the relationship between the sizing nozzle and the yarn in the same device. is there. 1 ... Flat stacked leaf, 1 '... Thread binding booklet, 5 ... Sewing machine, 8
… Bound thread, 11… Thread, 14… Adhesive nozzle, 15… Spout,
16 ... adhesive, 17 ... glue tank, 18 ... puncture hole, W ... spacing.

Claims (3)

[Claims] 1. A flat lap leaf is thread-stitched using a sewing machine,
Forming a booklet by impregnating an adhesive agent into the thread from the back side of the flat stitched leaf by capillary action of the binding thread, and pasting a cover on the back side leaf having the thread used for impregnating the adhesive agent. Bookbinding method characterized by. 2. A flat stitching leaf is fed in a flat stitch while being thread-stitched using a sewing machine, and a gap is provided between the adhesive pouring port of a sizing nozzle disposed immediately below the stitches on the back side of the stitching flat stitching leaf and the stitches. And the adhesive injected from the adhesive pouring port to the gap is impregnated by the capillary action of the binding yarn into the above-mentioned thread under the above-mentioned flat feeding, and the back leaf having the thread provided for the impregnation of the adhesive. A booklet binding method characterized by forming a booklet by pasting a cover sheet on. 3. The booklet binding method according to claim 1, wherein the yarns are front yarns.