EP0809598A1

EP0809598A1 - Treatment device, in particular transverse sizing machine

Info

Publication number: EP0809598A1
Application number: EP96904788A
Authority: EP
Inventors: Theo Hesselmann
Original assignee: Planatolwerk W Hesselmann Chemische und Klebetchnik Ger
Current assignee: Planatolwerk W Hesselmann Chemische und Klebetchnik Ger
Priority date: 1995-02-18
Filing date: 1996-02-15
Publication date: 1997-12-03
Anticipated expiration: 2016-02-15
Also published as: WO1996026148A1; DE59601610D1; ES2129957T3; ATE178561T1; EP0809598B1; DE29502723U1; US5876784A; CA2212576A1

Abstract

PCT No. PCT/EP96/00648 Sec. 371 Date Jul. 30, 1997 Sec. 102(e) Date Jul. 30, 1997 PCT Filed Feb. 15, 1996 PCT Pub. No. WO96/26148 PCT Pub. Date Aug. 29, 1990The present invention pertains to a treating device 1, especially a rotating transverse gluing mechanism for high-speed, register mark-related paper or film webs 2. The movements of the transverse gluing mechanism 1 are synchronized with the web 2, and the transverse gluing mechanism has an independent synchronous drive 6 with a drive motor 7 and a regulating unit for this purpose. The electronic regulating unit compensates variations in the synchronism of the running web 2.

Description

DESCRIPTION

Treatment device, in particular cross gluing unit

The invention relates to a treatment device, in particular a rotating cross-gluing unit, for tendon-running, register-related paper or film webs with the features in the preamble of the main claim.

Such cross gluing units are known from DE-A 35 27 660, DE-A 41 29 404, EP-A 0 096 832 and EP-A 0 209 110. They are usually attached to high-performance rotary printing presses and are used to apply a transverse glue strip to the fast-moving printed paper web at predetermined locations. The cross glue strip is usually located on a fold line later formed in the folding device. Its position depends on the printing and folding format in the transverse and longitudinal directions and must be accurate in this respect. The cylinder of the cross-gluing unit is at least partially wrapped around by the running paper web and rotates at the same peripheral speed as the plate cylinder of the printing press of the same diameter. This requires a high level of drive precision for the cross gluing unit. DJ_ _e known Querleimwerke do not have their own drive, but will be an aggregate of the printing press, for example. B. a propeller shaft. The drive is derived via toothed belts, cardan shafts, bevel gear pairs and the like. The problem here is that a cross-glue unit is usually retrofitted on a printing press and that the printing press has no prepared interfaces for this. In addition, the drive parts have to be calculated and manufactured with high precision, which involves a considerable amount of design and construction work for multi-stage intermediate drives. A similar device is shown in US-A-4, 370, 942. Here a running paper web is perforated in regions by two perforation rollers. An adhesive layer is applied to the paper web via a downstream glue roller, excluding the perforated areas. The perforation and glue rollers are coupled and synchronized via a gear connection.

It is an object of the present invention to show a better mounting option for a cross-gluing unit or the like other treatment device.

The invention solves this problem with the features in the main claim. The treatment device according to the invention, in particular the cross glue unit, has an independent synchronous drive. From the high-speed paper or film web, only the speed and the registration, ie. H. the desired position of the fold line, glue line or the like, tapped in a suitable manner and used to control and possibly regulate the synchronous drive. There is no need for complex mechanical drive derivation.

The treatment device or the transverse gluing unit can be attached to a printing press or the like other suitable processing system for paper or film webs more easily, more simply, more cost-effectively and with less structural and spatial restrictions. Overall, the economy of

Treatment device or cross glue unit increased.

The synchronous drive also offers more options for adapting and varying the drive. The rigid coupling of the movements of web and treatment device or cross-glue unit can be removed. Offset values can be entered via the control so that the If desired, glue strips can also be applied in front of or behind the fold line in order to better meet the requirements of the printed product, such as brochure thickness, etc. In addition, it is easier to bring the cylinder of the cross gluing unit into the parking position during breaks in operation and then to position it again exactly and in register when it starts up again. Elaborate mechanical aids such. B. an electromagnetic Mönninghoff clutch, superimposed clutches or a locking disc with locking lever are unnecessary.

The treatment device with the synchronous drive according to the invention has less mechanically stressed parts and thus a longer service life. The maintenance effort is less. On the other hand, the drive precision and the speed can be increased.

Further advantageous embodiments of the invention are specified in the subclaims.

The invention is shown in the drawings, for example and schematically. In detail show:

Figure 1: in a perspective view

Cross gluing unit with a synchronous drive and parts of a printing press and

Figure 2 u. 3: Variants of the synchronous drive in side view.

FIG. 1 shows a treatment device (1) in a broken-off representation for a tendon-running, register-related paper or film web (2). Alternatively, the web (2) can also consist of cardboard or another suitable material. It is preferably a printed paper web on a powerful rotary printing machine (not shown).

In the preferred embodiment, the treatment device (1) is designed as a transverse gluing unit which has one or more rotating cylinders (3) which are closely wrapped by the web (2) at least over part of the circumference and by several, in one or more lines Dispose arranged outlet openings (4) in the jacket to the web (2) at least one glue strip lying transversely to the running direction. The length or position of the cylinder (3) is matched to the width of the web (2). The Querleimwerk (1) is, apart from the drive, designed in a known and any suitable manner, for. B. according to EP-A 0 096 832, EP-A 0 209 110, DE-A 35 27 660 or DE-A 41 29 404. To adapt the web wrap, deflection and register rollers etc. are available. The cylinder (3) can be multi-part or variable in diameter to adapt to different printed products. The cross glue unit (1) is preferably arranged behind the ink dryer and in front of or on the folder of the rotary printing press. In the exemplary embodiment shown, there is only one cross-gluing unit (1) with a cylinder (3). Depending on the type of print job, there may also be more cross gluing units (1) or more cylinders (3). The cylinders (3) are adjusted and positioned to the width of the web.

The treatment device (1) can also be of a different type, e.g. B. be designed as a humidifier etc. It can be any type of rotating or swiveling element which provides the high-speed web (2) with an order or otherwise processes it. There is a register reference, i. H. that the application or treatment takes place at certain points in the running direction of the web (2), which are predetermined by the printing format, the folding format or other criteria. The following, related to the cross gluing unit

With suitable adaptation, explanations also apply to the other embodiments of the treatment device (1).

The cross glue unit (1) has its own

Synchronous drive (6), which rotates the cylinder (3) to match the paper or film web (2) running on the string. The synchronous drive (6) consists of a drive motor (7), for. B. a controllable DC motor, in particular a brushless servo motor and a suitable control circuit (8). The control (8) preferably also includes a control (9), but this need not be the case in all applications.

For the synchronization of the movements of the web (2) and the cylinder (3), the web speed and the register reference are calibrated by at least one suitable one Setpoint generator (12) preferably scanned without contact. This can be done in several ways. The setpoint value (s) (12) can be positioned at any suitable location on the printing press. They are preferably located in the vicinity of the cross gluing unit (1). Changes in the web (2) until the cross gluing unit (1) is reached, for example due to stretching, etc. can be largely excluded or at least recorded relatively easily and precisely and used to correct the target values.

On the one hand, the web (2) can have register-related reference markings (14), which are e.g. are print control strips, color marks and the like. These are related to the print image or print format in the running direction of the web. From the position of the reference markings (14) the target position of the transverse guide strip can again be determined. The reference marks (14) can be z. B. scan as an optical sensor setpoint generator (12). The speed of the path (2) can also be calculated from the tactile pulses obtained and their time interval.

In another embodiment, the setpoint generator (12) z. B. be designed as a rotary encoder, which is arranged on a suitable, in connection with the paper web and register-related axis of rotation. This axis of rotation can be the plate cylinder itself. An obvious registration-related cutting roller or is usually easier and more accessible

Perforating roller (15). The rotary encoder is preferably at least cyclically absolute, ie it displays each rotary position as an absolute value during one revolution of the axis. There is a calibration on the register reference. The number of revolutions can be determined via zero crossings. Such an encoder has z. B. one or more incremental measuring disks that rotate with the axis and in a suitable manner, e.g. B. be scanned by a light barrier, etc.

One or more setpoint generators (12) can be present, all of which are connected to the control circuit (8) or

Control (9) are connected in terms of signal technology via suitable evaluation and forming units. One or more actual value transmitters (10, 11) are also connected to the control circuit (8) or control (9).

As illustrated in FIGS. 2 and 3, the number and arrangement of the actual value transmitters (10, 11) can depend on the drive arrangement. In both cases, it is preferably cyclical absolute rotary encoder analogous to the above-described embodiment of the setpoint generator (12).

In the embodiment of Figure 2, the drive motor (7) is plugged directly onto the axis (5) of the cylinder (3). In this case, an actual value transmitter (10) which is integrated in the drive motor (7) is sufficient. In the embodiment of Figure (3), the drive motor (7) is offset next to the cylinder (3) for space reasons and with this via an intermediate drive (13), z. B. a toothed belt drive connected. In this case, it is advisable to arrange an actual value transmitter (10) in the drive motor (7) and a second actual value transmitter (11) on the axis (5) of the cylinder (3). In this way, play, tolerances and other transmission errors of the intermediate drive (13) can be eliminated.

The actual value transmitters (10, 11) are calibrated on the cylinder (3) or the drive motor (7). The calibration with respect to the cylinder (3) also relates to the position of the outlet openings (4) on the cylinder jacket. The actual value transmitters (10, 11) thus signal the speed of rotation and the angular position of the outlet openings (4). In the control circuit (8) the synchronism between the movement of the web (2) and the rotation of the cylinder (3) is established and the drive motor (7) is acted upon accordingly. An adaptation to changes in the web speed during operation, z. B. made in the start-up and braking phase. In a selectable lower speed range up to 15,000 rpm, for example, the cylinder (3) can be carried along or accelerated without register or format. The exact registration or format-accurate synchronization is established after this speed threshold is exceeded. The exact synchronization from an early usable speed of the printing press reduces the amount of waste.

An index (16) can also be attached to the cylinder (3), which marks the position of the outlet openings (4) and is preferably attached directly to the opening strip. The index (16) can by a suitable sensor (17), for. B. a light barrier, an inductive or capacitive button, preferably scanned without contact. The sensor (17) is in turn connected to the control circuit (8) or control (9) and additionally signals the rotational position of the cylinder (3) or the index passage. There can be several

Sensors (17) can be arranged, the sensor (s) (17) also being oriented to certain significant rotational positions of the cylinder (3). On the one hand, this can be the parking position, in which a suitable closure (not shown)

Exhaust openings (4) covers. On the other hand, a sensor (17) can also be arranged at a significant point in the area of overlap between outlet openings (4) and web (2), that is to say in an area where the glue is applied. The control circuit (8) preferably contains a control (9) which permanently compares the setpoints tapped from the path movement and the actual values of the cylinder and engine movement. Deviations in value are recorded according to size and duration and at least temporarily saved. In the event of deviations in value, the control counter-compensates not only to compare the speeds, but also to restore the register accuracy. Deviations in value generally also mean that the

Cross glue position opposite the desired position on the fold line. As part of the counter-compensation, the cylinder is driven faster or slower for a short time, depending on the direction of the actual value deviation, in order to compensate for the deviation and to reduce the position drift of the transverse glue strip.

The control circuit (8) or regulation (9) are designed as electronic, preferably computerized and freely programmable circuits. They contain one or more microprocessors with data storage, interfaces and input / output units. In the control circuit (8) or control (9) z. B. fixed or speed-dependent offset or switch-on values can be entered. In this way, varying stretches of the web (2), temperature fluctuations and other boundary conditions can be taken into account in the control or regulation of the synchronous drive (6).

Usually the glue strip and the register cover, especially the fold line, overlap. However, the relative position of the glue strip and register reference can be deliberately changed by briefly accelerating or decelerating the synchronous drive (6) with respect to the running web or by twisting it at a standstill. This enables targeted gluing next to the fold line. The control circuit (8) and the regulation (9) can be coupled to the machine control of the cross-gluing unit (1), integrated integrally or in a modular manner, or configured independently.

Modifications of the described embodiment are possible in different ways. In the case of a multiple arrangement of transverse gluing units (1) or cylinders (3), each unit can be assigned its own synchronous drive (6) of the type described. Alternatively, it is also possible to drive several, in particular closely adjacent, cylinders by means of a common synchronous drive. Furthermore, it is possible to use separate drive motors with actual value transmitters (11, 12) in connection with a common control circuit (8) or control (9) for the various cross-gluing units. Depending on the type of web guide and the environmental influences, several synchronous drives (6) can also access one or more common setpoint devices (12).

In a further modification of the exemplary embodiments, the setpoint and actual value transmitters (lυ, ll, 12) can consist of several units which record the speed and register position separately. The speeds can e.g. B. tapped on a tachometer on an axis of rotation, while the rotational position in another way, for. B. is signaled by indexes or the like.

REFERENCE SIGN LIST

1 treatment device, cross gluing unit

2 paper web 3 cylinders

4 outlet opening

5 axis

6 synchronous drive

7 drive motor 8 control circuit

9 regulation

10 actual value transmitter

11 Actual value transmitter

12 setpoint generator 13 intermediate drive

14 Reference mark

15 cutting roller, perforating roller

16 index

17 Sensor 18 fold line

Claims

PATENT CLAIMS

1.) Process for treating, in particular cross-gluing, high-speed, register-related paper or film webs, characterized in that the treatment device (1) is synchronized with the web speed with an independent synchronous drive (6).

2.) Method according to claim 1, characterized in that the treatment device (1) is synchronized in a register-related manner.

3.) Method according to claim 1 or 2, characterized in that the web speed and / or the register position is preferably scanned without contact.

4.) Method according to claim 1, 2 or 3, characterized in that the synchronization is electronically controlled or regulated.

5.) Method according to claim 4, characterized in that the synchronization is switched on or off according to selectable criteria, in particular the speed or web speed reached.

6.) Method according to claim 4 or 5, characterized in that during the synchronization external influences on the treatment device (1) and / or the paper or film web (2) are compensated.

7.) Method according to claim 4, 5 or 6, characterized g e k e n n z e i c h n e t that in the synchronization of the register reference by deceleration and / or acceleration of the treatment device (1) compared to the web speed is at least briefly changed.

8.) Treatment device, in particular a rotating cross-glue unit, for tendon-running, register-related paper or film webs, thereby ensuring that the treatment device (1) has an independent synchronous drive (6).

9.) Treatment device according to claim 8, characterized in that the synchronous drive (6) has a drive motor (7) and a controller (8) for precise registration of the movements of the treatment device (1) and the running paper or film web (2).

10.) Treatment device according to claim 9, characterized in that the control (8) has an electronic, programmable control circuit (9).

11.) Treatment device according to claim 9 or 10, characterized in that the control (8) counteracts synchronism fluctuations.

12.) Treatment device according to claim 8 or one of the following, characterized in that the synchronous drive (6) has at least one setpoint generator (12) for tapping the

Has web speed and / or the register position.

13.) Treatment device according to claim 8 or one of the following, characterized in that the synchronous drive (6) has at least one actual value transmitter (10, 11) for tapping the

Circulation speed and the register position of the treatment device (1) and / or the drive motor (7).

14.) Treatment device according to claim 12 or 13, characterized in that the setpoint generator (12) and / or the actual value generator (10, 11) are designed as at least cyclically absolute rotary encoders.

15.) Treatment device according to claim 14, characterized in that the setpoint generator (12) is arranged on a register-related cutting or perforating roller (15).

16.) Treatment device according to claim 14, characterized in that the setpoint generator (12) is designed as a sensor which scans reference markings (14) on the running web (2).

17.) Treatment device according to claim 8 or one of the following, characterized in that the synchronous drive (6) on the cylinder (3) of the transverse gluing unit (1) and / or the cutting or

Perforating roller (15) has an additional index (16) for marking the position of the outlet openings (4) and a sensor (17) for index scanning.