DE202008006782U1 - Device for adjusting the glue application - Google Patents

Abstract

contraption (1000) for adapting the glue application to a book block (100) and in particular its book block back in a glue application station (506) an adhesive binder (503), wherein the glue application station (506) has a Slot nozzle (8) with a nozzle slot (8a) for Which has a width corresponding to the thickness of the book block (100). is adaptable, and wherein the device (1000) has two guide rails (2, 3) which is viewed in the book block transporting direction (T) right and left of a book block transport path and immediately arranged in front of the nozzle slot (8a) and at right angles to Book block transport direction (T) are adjustable (a), characterized that the device (1000) first means for a coarse adjustment and second means for a fine adjustment.

Description

The The invention relates to a device for adjusting the glue application on a book block according to the preamble of Claim 1 and 2.

Perfect Binder, serve for the production of sticky brochures or book blocks for hardbacks, being to a book block collected folded sheets and / or single sheets Apply an adhesive or glue on the previously processed Block back to be connected. The terms glue and glue are used synonymously below. The possible binding methods and the product variants depend on the machine equipment. This consists essentially of the functional units book block transport system, Buchblockeinführstation, back processing, Rückenbeleimen, Intermediate drying, side gluing, back reinforcement, Put on the envelope, press the envelope and dry.

The DE 20 2005 007 012 U1 shows such a bookbinding machine with a book block transport system. The book block transport system consists of conveyors running around deflection wheels and a plurality of staples clamped in a same spaced mutual distance thereon for clamping sheet stacks.

For Perfect binding of books, it is necessary adhesive to apply between book block and envelope on both the spine (back glue) as well as thin Strip near the spine on the first and last page (Side glue). Common adhesives are for this PVC-based dispersion glue, hotmelt (EVA, PA) or reactive Hotmelts (PUR). The latter react with the humidity of the air and require because of the potential health hazards by Isocynate a particularly careful handling. On the other hand, the highest strength values can be achieved with PUR with regard to the side pull-out forces for achieve the leaves as well as almost all paper qualities, ie uncoated, dull painted or glossy painted Edit paper.

When Adhesive applicators are roll and die systems. Roller systems are able to differentiate book blocks Thickness in the same way to glue, however, must for the side gluing provided an additional device become.

Besides Volatile components of the adhesives become large Amount released because the glue supply is a relatively large Surface has that interact with the ambient air stands. Therefore, such application systems are for PUR only conditionally applicable, usually in high-performance machines, the Consuming glue continuously in large quantities. Better suitable for PUR use are therefore nozzle application systems, in a closed circuit only small quantities Release adhesive.

Such a nozzle application system is for example in the DE 202 16 794 U1 described. The nozzle application system comprises a slot die whose width is adjustable and which is thus adaptable to the book block thickness. Before glue is applied to a book block back, the book block is guided by side guides and positioned over the nozzle slot of the slot die.

The EP 0 550 913 A1 also shows a nozzle application system with a slot die. To guide the book block in the area of the slot die, the nozzle application system has two block guide rails, which are arranged on the right and left of the book block transport path. The block guide rails can be adjusted transversely to the book block transport direction, whereby an adjustment to the book block thickness is possible. The adjustment takes place via two handwheels.

If Block guide rails placed too far to the book block There may be marks on the product on the first and last page come. Furthermore, a congestion can occur in which individual pages are pulled over each other (folding).

If the block guide rails lie on the top edge of the nozzle or are too close to it, unwanted gluing can also occur:
Incorrect gluing of the first and last page, ie the glue application does not form a clamping effect around the book block.

By the resting of the block guide rails can be adhesive be stripped off. It can after adhesive filaments passing the book block from the nozzle to the Pull book block.

One Unclean adhesive application can occur due to the block guide rails resting on it respectively.

task The object of the present invention is therefore to provide a device which guides a book block in the area of a slot nozzle, and doing the above-described adverse effects on the Glue application avoids.

Solved This object is achieved by a device for adjusting the glue application to a book block with the characterizing features of claim 1 and claim 2.

The inventive device for An Matching of the glue application to a book block is part of a glue application station of an adhesive binder. The glue application station comprises a slot nozzle, in particular a so-called slot die, for glue application, in particular on the book block back, wherein the width of the nozzle slot of the slot nozzle can be adapted to the thickness of the book block. Furthermore, the device comprises two guide rails, which are arranged in the book block transport direction to the right and left of a book block transport path and located immediately in front of the nozzle slot of the slot nozzle. The guide rails are adjustable in position at right angles to the book block transport direction. To carry out the adjustment, the device has first means for a coarse adjustment and second means for a fine adjustment. The first means are in particular controllable electric motors. This makes it possible for the coarse adjustment to take place automatically during the installation process of the perfect binder for a new job. Values for the book block thickness stored in the machine control are transmitted to the controllable electric motor. The second means for a fine adjustment are in particular hand wheels, which can also be operated during operation. Thus, a further optimization of the glue application is also made possible during the operation of the perfect binder by the machine operator.

part The invention is also a device for adjusting the glue application on a book block in a glue application station of a perfect binder. The glue application station has a slot nozzle for glue application especially on the book block spine. The width of the nozzle slot the slot nozzle is adaptable to the thickness of the book block. Furthermore, the device comprises two guide rails, which in book block transport direction, right and left one Book block transport path and immediately in front of the nozzle slot the slot nozzle are arranged. The guide rails are adjustable at right angles to the book block transport direction. According to the invention an adjustment of the two guide rails in at least one further direction possible. It is particularly advantageous if the guide rails in book block transport direction can be adjusted. This will cause the horizontal distance the guide rails of the nozzle slot of the Slotted nozzle changed. Also advantageous it, if the guide rails are adjusted vertically can. This will change the vertical spacing of the guide rails changed from the nozzle slot of the slot nozzle. In a particularly advantageous embodiment, the Adjustment of the guide rails in three directions possible: in book block transport direction, at right angles to the book block transport direction and a height adjustment in the vertical direction.

In a first advantageous embodiment, the Adjustment of the guide rails manually. Owns the device for adjusting the glue application familiar to the expert Adjusting means, such as hand wheels and spindles, screws and set screws.

In an alternative embodiment, the adjustment the guide rails also electromechanical, hydraulic or pneumatically. Manual and motorized adjustment options can also be combined with each other in an advantageous manner become. For example, a coarse adjustment can be done by motor and a fine adjustment manually. Also can for the different adjustment directions different adjustment means be provided. It is particularly advantageous in each case if the Setting is stepless and thus a very accurate positioning the guide rails is made possible.

In a particularly advantageous embodiment of the device for Adjusting the glue application, the guide rails are easy mountable and easy to disassemble. This makes it possible that replaced the guide rails in a simple manner can be and thus a further optimization of the glue application on the book block back and thus an optimization of the Glue order image is possible. The guide rails can thereby on their the book block facing inner surface over have different chamfers. It is also possible, for thread-sealed and thread-stitched products use guide rails, which at the bottom of their guide block facing the book block have a chamfer, so that the book block optimally to the guide rail can create and the adhesive in an advantageous manner between the single layers of brochures can penetrate. Also for other products that strongly mushroom can do so shaped guide rails used advantageously become.

There by the device according to the invention an accurate Adjusting the guide rails is made possible can be beneficial to minimal changes, missing glue on the first and last page while the running of the machine to be reacted - without doing the To change the slot nozzle.

If the guide rails at a small vertical distance from Z. B. 0.5 mm to the top of the nozzle slot of the slot nozzle can be set around the book block back an "adhesive clip" form. Thus, the error of detaching the first and counteracted last page. A clean glue application will ensured in this setting in an advantageous manner.

If the Blockführungsschienen in book block transport direction over the nozzle slot of the slot nozzle are set, can ensure a uniform gluing picture become.

For Thread-sealed, thread-sewn and unstable products are moving the guide rails in book block transport direction to z. B. 2 mm in front of the nozzle slot of advantage. Here is ensures a better management of the products.

Regarding further advantages and advantageous embodiments of the invention is based on the subclaims as well as the description of a Embodiment with reference to the accompanying Drawings referenced.

embodiment

The Invention is still to hand of an embodiment be explained in more detail. It show in more schematic presentation

1 a view of the device for adjusting the glue application

2 a plan view of the device for adjusting the glue application

3 an adhesive binder with a device for adjusting the glue application

1 shows a view of the device for adjusting the glue application 1000 , A book block 100 is from a book block tongs 511 held. The book block 100 is doing through the guide rails 2 . 3 guided. By means of a nozzle 8th becomes glue 9 applied to the book block spine. The adjustment of the guide rails 2 and 3 in the direction of arrow a is known from the prior art. It is often covered the nozzle slot and set the glue outlet.

According to the invention is now a fine adjustment (adjustment) of the guide rails 2 and 3 to the book block 100 regardless of the Eistellung of the nozzle slot 8a the slot nozzle 8th possible.

This fine adjustment can by means of knobs or handwheels, not shown, during operation of the adhesive binder 503 will be realized. The adjustment takes place in the range of 0.01 mm.

The guide rails 2 and 3 are by loosening the screws 5 in the direction of arrow b by turning the setscrews 6 adjustable. The distance to the nozzle slot 8a is variably selectable in the range 0-1 mm. A value of 0.5 mm is preferably set.

2 shows a plan view of the device for adjusting the glue application 1000 , By loosening the screws 4 can the guide rails 2 and 3 be variably set in the arrow direction c. The default setting here is the leading edge in the middle of the nozzle slot 8a set and with a scale 7 on the right guide rail 3 defined to a fixed edge.

Out 3 results in the position of a device for adjusting the glue application 1000 inside a perfect binder 503 with a collator 501 , a transfer device 502 , The gathering machine 501 owns a large number of investors 510 , where in 5 for clarity, only two investors 510 are shown. In the investors 510 there are folded sheets 102 which by the investors 510 isolated and from driving pins 512 be moved, with the driving pins 512 on a revolving conveyor 513 are attached. The driving pins 512 are moving to the investors 510 pass by, each taking over a folded sheet 102 and make it to a book block or book 100 to be joined foldsheet 102 together.

The collated folded sheets 102 be from their lying position in the collator 501 through the transfer device 502 placed in a standing position and as still unbound book blocks 100 to the book block pliers 511 of the perfect binder 503 to hand over. The perfect binder 503 has a large number of circulating book block pliers 511 to transport the book blocks 100 , The book blocks 100 are processed during transport in the area of their spine: in a milling station, a glue application station 506 and, if necessary, a Fälzelstation. The perfect binder 503 also owns a cover feeder 504 , in the envelopes 101 with a device for grooving 1000 grooved and fed and subsequently with a respective book block 100 be glued. The book blocks created in this way 100 or books are at the position 505 from the perfect binder 503 handed over to a cooling line. After cooling the book block or book 100 the three-side trimming and the book display take place.

2

left guide rail

3

right guide rail

4

screw

5

screw

6

Set screw

7

scale

8th

slot die

8a

die slot

9

adhesive

a

width adjustment the block guide

b

height adjustment the block guide

c

adjustment the block guide in the transport direction

d

width adjustment the slot nozzle

100

book block

101

envelope

102

signatures

501

Collator

502

Transfer device

503

Perfect binder

504

cover feeder

505

position Cooling section, three-side trim and book display

506

glue application

510

investor

511

Book block clamp

512

Carrier pin

513

Surrounding conveying member

1000

contraption for adjusting the glue application

T

transport direction

U

feed envelope

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 202005007012 U1 [0003]
• - DE 20216794 U1 [0007]
• EP 0550913 A1 [0008]

Claims (9)

Contraption ( 1000 ) for adapting the glue application to a book block ( 100 ) and in particular its book block back in a glue application station ( 506 ) of an adhesive binder ( 503 ), wherein the glue application station ( 506 ) a slot nozzle ( 8th ) with a nozzle slot ( 8a ) is applied to the glue application, whose width to the thickness of the book block ( 100 ), and wherein the device ( 1000 ) two guide rails ( 2 . 3 ) viewed in the book block transport direction (T) to the right and left of a book block transport path and immediately before the nozzle slot (FIG. 8a ) and are adjustable (a) at right angles to the book block transport direction (T), characterized in that the device ( 1000 ) first means for a coarse adjustment and second means for a fine adjustment. Contraption ( 1000 ) for adapting the glue application to a book block ( 100 ) and in particular its book block back in a glue application station ( 506 ) of an adhesive binder ( 503 ), wherein the glue application station ( 506 ) a slot nozzle ( 8th ) with a nozzle slot ( 8a ) is applied to the glue application, whose width to the thickness of the book block ( 100 ), and wherein the device ( 1000 ) two guide rails ( 2 . 3 ) viewed in the book block transport direction (T) to the right and left of a book block transport path and immediately before the nozzle slot (FIG. 8a ) are arranged and at right angles to the book block transport direction (T) adjustable (a), characterized in that the guide rails ( 2 . 3 ) can be adjusted in at least one other direction (b, c). Device for adjusting the glue application according to claim 2, characterized in that the guide rails ( 2 . 3 ) in book block transport direction (c) can be adjusted. Device for adjusting the glue application according to one of claims 2 to 3, characterized in that the guide rails ( 2 . 3 ) vertical (b) can be adjusted. Device for adjusting the glue application after a of the preceding claims, characterized in that the adjustment is done manually. Device for adjusting the glue application after a of the preceding claims, characterized in that the adjustment is motor, hydraulic or pneumatic. Device for adjusting the glue application after a of the preceding claims, characterized in that the adjustment is stepless. Device for adjusting the glue application according to one of the preceding claims, characterized in that the guide rails ( 2 . 3 ) are easy to assemble and easy to disassemble. Device for adjusting the glue application according to one of the preceding claims, characterized in that the guide rails ( 2 . 3 ) in their form to thread-sealed or thread-stitched book blocks ( 100 ) are adjusted.