WO2008116450A2

WO2008116450A2 - Single sided corrugated cardboard machine

Info

Publication number: WO2008116450A2
Application number: PCT/DE2008/000490
Authority: WO
Inventors: Andreas Knorr; Daniel Knorr
Original assignee: Andreas Knorr; Daniel Knorr
Priority date: 2007-03-28
Filing date: 2008-03-27
Publication date: 2008-10-02
Also published as: DE202007004668U1; WO2008116450A3; EP2134539A2

Abstract

The invention relates to a single sided corrugated cardboard machine (1), with a machine chassis (2), at least one fixedly arranged pressure roller (8), a corrugated roller module (28) with a pair of corrugated rollers (6, 7), wherein each corrugated roller is mounted on a pivotable component (9) or (29), both corrugated rollers being adjustable relative to each other and the inner corrugated roller (7) is adjustable relative to the pressure roller (8), with jointed connections (23, 35) for the pivotable components (9, 29), a pressure device (31) and a release device (32), an adhesive application device (17) and feeds (19, 20) and discharges (21) for card webs.

Description

Single sided corrugator

The invention relates to a single-sided corrugated cardboard machine with the features of the preamble of claim 1.

Known corrugated cardboard machines contain as main elements a machine frame with two rotatable meshing corrugating rolls, which give a paper web the characteristic corrugation for the production of corrugated cardboard, a Glimauftragsvorrichtung for gluing the corrugated peaks sections of paper web and a rotatable pressure roller, a cover sheet (liner) against the Glue covered crests of the corrugated web press on the inner corrugating roller. The outer and inner corrugating roller and the pressure roller act together and are held against each other under a certain contact pressure.

In most cases, the corrugating roller pairs are combined to form a module to allow a compact and quick replacement of the kit. Replacement is required if a corrugator roll is damaged, worn or otherwise corrugated board web corrugation is desired.

In known single-sided corrugator machines, two or more corrugating roller pairs are mounted on a pivotable or rotatable device, which can perform a selective positioning of the corrugating roller pair in the working position (DE 3631803, DE 3840094).

In another known embodiment lies between two Riffelwalzenmodulen a pivotable pressure roller and optionally presses in combination with one of the two Riffelwalzenmodulen, depending on operating conditions, the corresponding inner corrugating roller (DE 4017436). In all known types, the inner corrugating roller is fixedly arranged, wherein the outer corrugating roller and the pressure roller are mounted on pivotable elements and arranged undeliverable to the inner corrugating roller.

All the above embodiments are costly and often not well accessible for structural reasons.

The invention has for its object to improve the known single-sided corrugator machine so that the structure is simplified.

This object is achieved with the features in the characterizing part of claim 1.

Further embodiments of the invention will become apparent from the dependent claims.

The invention will be explained in more detail with reference to embodiments shown in the drawing. In the drawing show:

Fig. 1 is a schematic side view of a single-sided corrugator machine according to the prior art;

FIG. 2 shows a section along the line II - II in FIG. 1; FIG.

Fig. 3 is a schematic side view of a single-sided corrugator machine according to an embodiment of the invention;

Fig. 4 is a section along the line IV - IV in Fig. 3rd Fig. 5, 7 two schematic diagrams of a single-sided corrugator machine according to the prior art;

Fig. 6 is a schematic diagram of a single-sided corrugator according to an embodiment of the invention;

8-10 show schematic diagrams of the single-sided corrugator according to some embodiments of the invention;

Fig. 11,

13-14 are schematic side views of modified embodiments of corrugating roll modules

Fig. 12 is a section along the line XII - XII in Fig. 11;

15, 16 are schematic side views of single-sided corrugated cardboard machines with modified embodiments; according to the invention

17 is a schematic diagram of the storage of two corrugating roller module replacements

Fig. 18 - 25 further embodiments of the invention.

A single-sided corrugator machine 1 according to FIGS. 1, 2 and 5 (according to the prior art) includes a machine frame 2 with crossbars 25, 26, a corrugating roll module 3 with module frame 14, module crossbars 27, an outer corrugating roll 6, an inner corrugating roll 7, pivot lever 9 with an eccentric pivot axis 23, a pressure roller 8, pressure roller lever 13 with a hinge connection 24, lifting and pressing devices 10, 11, 12, 15, Impact elements 4, 5, an adjusting device 16 for the pressure roller 8, and a gluing unit 17 with a glue applicator roller 18th

The inner corrugating roller 7 is drivable in the working position via a drive, not shown, in the indicated direction of the arrow. The outer corrugating roller 6 is thereby forcibly taken in the indicated direction of the arrow.

As can be seen from FIGS. 1, 3, 15, 16, 18, 20, 22 to 25 (in the corrugating roll module drawn in the working position), a smooth paper web 19 runs in the indicated arrow direction of the outer corrugating roll 6, is produced by the interaction with the inner corrugating roller 7 corrugated and runs as a single-sided corrugated cardboard 21 with the cover sheet 20, which tapers in the indicated arrow direction of the pressure roller 8, in the indicated arrow direction. In most constructions, the cover sheet 20 is heated by a preheat cylinder 22.

The glue application device 17, which is displaceable back and forth in relation to the inner corrugating roller 7, glues the corrugated summit sections of the paper wave path by means of a glue application roller 18.

In conventional corrugated cardboard machines, the corrugating roller module frame 14 is pressed firmly against the stops 4, 5 by the lifting devices 10, 11.

In the working position, the inner corrugating roller 7, which is mounted on the fixed module frame 14, arranged stationary. The outer corrugating roller 6 and the pressure roller 8, which are mounted on pivoting levers 9,13, are deliverable arranged to the inner corrugating roller 7.

In the schematic diagram of a modified embodiment according to Figure 7 (prior art), the machine has a pressure belt 41 instead of a pressure roller arranged, which is equipped with a corresponding belt tensioning device 42 to meet the operating conditions of the process.

In the embodiment of Fig. 3, 4 and 6, a single-sided corrugator 1 is shown according to the invention. The machine includes a frame 2 with crossbars 39, 40, a stationary pressure roller 8, which is rotatably mounted on a fixed bearing housing 30, a corrugating roller module 28 with a set of two corrugating rollers 6, 7 which are engageable with each other, a pivotable module frame 29 with Crossbars 27, 38, corrugating roller module wheels 47, 48, a pivot axis 35, a bearing block 36 and holder 37. The corrugating roller module wheels 47, 48 can also assume other, determined by the direction of movement positions, eg Transverse movements according to FIGS. 3, 4, 11 and 13 or longitudinal movements according to FIGS. 14 to 18, 22 and 24.

The corrugating roll module 28 further includes a pivot lever 9, an articulated joint with eccentric pivot axis 23 (to accommodate parallelism of corrugating roll axes), a kickback 33 (e.g., return spring), and a stroke limiter 34 (e.g., screw, chain, cable, etc.).

The check device 33 builds up a voltage between the pivoting lever 9 and the module frame 29, so that a certain gap (limited by the stroke limiter 34) between the corrugating rollers 6, 7 is created when the machine is at rest.

The corrugator further has a pressing device 31 (Fig. 3) which adjusts the outer corrugating roller 6 to the inner corrugating roller 7 and also presses the inner corrugating roller 7 on the stationary pressure roller 8.

There is also the possibility not shown, the pressure roller. 8 to be arranged obliquely to the corrugating roller 7, so that the vertical plane plane of the Anpresswalzenachse forms an angle relative to the vertical plane plane of the corrugating roller axis.

The line pressure between the corrugating rolls 6, 7 is always higher than that between the inner corrugating roll 7 and the pressure roll 8, so that the corrugator 1 is provided with a relief device 32. The unloading device 32 may be an adjusting device with a force transducer or a pressing device which is controlled with a certain force in order to ensure the operational line pressure between the inner corrugating roller 7 and the pressure roller 8. Because of the irregular contact between the corrugating roller 7 and the flat contact surface of the pressure roller 8, the pressing device 31 or the discharge device 32 is equipped with an unlocking system acting on release of pressure to prevent any unwanted vibrations, but to maintain the appropriate roller contact.

In the immediate vicinity of the stationary pressure roller 8, a preheating cylinder 22 is arranged; This, in contrast to current corrugated machines allows a reduction in heat loss.

As can be seen from the schematic diagram of FIG. 8, the Andrückbzw. Relief devices 31, 32 by means of corrugating rollers 6, 7, the contact pressure of the pressure belt 41, so that the belt tensioning device 42 of FIG. 7 as in a conventional corrugated machine accounts.

The corrugating roll module 57 according to FIG. 11 and the cut XII-XII according to FIG. 12 is a modified variant of the corrugating roll module 28 from FIG. 3. The articulated connection 43 contains the pivot axis 35, the fastening plates 46 which are fastened to the module frame 29, the roll 45, which of a tensioning device 52 is locked against the jaw 51. The stroke limiter 34 is, as shown, set for a stroke "S" corresponding to a certain corrugating nip.

In the embodiment of the corrugating roll module 58 according to FIG. 9 and FIG. 13, a side plate 44 is provided by means of a tensioning device 52 or a tensioning lever

53 locked against the jaw 51; the pivot lever 9, 50 of the corrugating rollers 6, 7 is pivotally connected to the articulated connections 49 on the side plate 44. Advantageously, the pivot levers 9 and 50 have the same embodiment. The arrangement of the eccentric pivot axis 23 is required only once in the machine frame 2.

The corrugating roll module 59 of Figs. 10 and 14 is a modified embodiment suitable for open column type machines. The similarly formed pivot levers 54, 55 are centrally supported by hinges 49; the corrugating rolls 6, 7 are mounted on the opposite side of the column frame. The components of the pressing and unloading device 31, 32 and the clamping device 56 with the jaw 51 and eccentric pivot axis 23, which are intended to lock the side plate 44 are arranged on one side of the column frame.

The corrugated board machine 1 according to FIG. 15 contains a corrugating roller module 57 and the specific machine elements for the corrugated board production according to FIG. 3. In this modified structural variant, the tilting part of the corrugating roller module 57 is firmly positioned against the holder 60 by a tensioning lever 53. The tensioning lever 53 is moved, for example, by a rocking lever 61, wherein the rocking lever 61 is mounted on the bearing block 62 via a pivot axis 63 and is actuated by pressure elements 67, 68. The machine also includes a pressure device 65 and a release device 66 disposed on the support chair 64. When changing the module, the tensioning lever 53 releases the tilting part of the corrugating roller module 57: The module 57, as shown, is pulled out of the machine area and mounted on at least one pendulum carriage 69.

The corrugator machine 1 of Fig. 16 is similar to the machine of Fig. 15, but equipped with a corrugating roller module 58 of Fig. 13. This advantageously results in that the eccentric pivot axis 23 is installed only in the machine frame 2.

The plan view of the corrugator 1 of Fig. 17 shows e.g. two rows of shuttle cars 70, 71 ("Shuttle" cars) with two deposited corrugating roll module replacements 72. The shuttle cars 70, 71 reciprocate in the indicated arrow direction 73 to allow replacement of the corrugating roll modules. For this purpose, find rails 98 for the running of the corrugating roller modules 58 and rails 99 for the pendulum cars 70, 71 application, for which drives 97 are provided. The movements of these drives can be realized e.g. via chains, belts, driven rollers or similar drive elements.

In the embodiment according to FIGS. 18 and 19, the single-sided corrugator machine 1 is equipped with a corrugating roller module 57, wherein in the working position the axes of the corrugating rollers 6, 7 and the pressure roller 8 lie in a horizontal plane, in contrast to the perpendicular center plane of FIG previous embodiments. The glue application device 17, which is arranged on the underside of the inner corrugating roller 7, is moved vertically. The pivoting part of the corrugating roller module 57 is locked by means of a pivoting lever 74 and the pressing device 75. The pressing device 77 and the pivot lever 76, which together form a pressing unit, as well as the unloading device 32, the corrugating rollers 6, 7 to the pressure roller 8 at. Due to the horizontal arrangement of the rollers 6, 7, 8, which leads to a smaller overall height of the machine frame 2, the corrugator is also equipped with a rotatable paper preparation cylinder 78, a paper preparation device 79 and a preheat cylinder 22 (adjacent to the pressure roller 8). When Riffelwalzenwechsel the corrugating roller module 57, as drawn in Fig. 18, either pulled out in the direction of the machine on the carriage 70, or spent transversely.

In the modified embodiment of FIG. 20, the single-sided corrugator machine is equipped with an open machine frame and a corrugating roller module 57, wherein the pressure roller 8 is arranged on the underside of the inner corrugating roller 7. The tilting part of the corrugating roller module is locked with a tensioning device 80. By the lifting device 81 and the tension member 82 (e.g., cable, belt, etc.), the corrugating roll module 57 is transported during roll change. The process of roll change is shown in FIG.

In the modified embodiment of FIG. 22, the single-sided corrugated cardboard machine 1 is equipped with a column frame 2 and a corrugating roll module 59, wherein the pressure roller 8 is mounted on the upper side of the corrugating roll module 59 on the fixed bearing block 83. On the column frame side, the tensioning device 56, the eccentric pivot axis 23 and the jaw 51 are arranged. The pressing and unloading devices 31, 32 are arranged in the frame area and act directly on the pivoting lever of the corrugating rolls 6, 7.

In the embodiment according to FIG. 23, the single-sided corrugated cardboard 1 similar components as shown in FIG. 22, except that the pressure roller 8 is fixedly arranged on the lower side of the corrugating roller module 59. The locking of the module frame is fulfilled by the clamping device 84. The machine is also equipped with a preparation cylinder 78 and a paper preparation system 85. The corrugating roll module exchange is carried out with the lifting device 81 and the tensioning element 82.

In the modified embodiment of FIG. 24, the single-sided corrugator 1 has a similar machine frame 2 as in FIG. 22; the pressure roller 8 is mounted on the fixed bearing block 94, the pivot lever 88 is mounted on the articulated connections 49, 23 on the fixed bearing block 89. Furthermore, a pressing device 91, a relief device 92 and stops 90 are provided as stroke limiter of the pivot lever 88. Each corrugating roller 6 and 7 is mounted in a separate bearing housing 86, wherein the bearing housing of each corrugating roller are connected to crossbars 87. A clamping device 93 (e.g., with screws, jaws, or other clamping elements) provides for the mounting of the bearing housing 86 on the pivoting lever 88. The roll change is performed with the shelf carriage 95.

As can be seen in Fig. 25, the single-sided corrugator 1 contains similar components as shown in FIG. 24, except that the pressure roller 8 is below the corrugating rollers 6, 7 and is mounted on the fixed bearing housing 30, wherein the machine with a paper preparer 78, a Paper preparation device 85 and a preheater 22 is configured. The roll change is performed with the floor position 96 and the lifting device 81 with the tension element 82. LIST OF REFERENCE NUMBERS

Single sided corrugator

1 - single-sided corrugator

2 - Machine frame

3 - corrugating roll module according to the prior art 4; 5 - Attacks

6 - outer corrugating roller

7 - inner corrugating roller

8 - pressure roller

9 - Swing lever

10; 11 - Lifting device

12 - pressing device of the corrugating rollers

13 - pressure roller lever 14 - module frame

15 - Pressing device of the pressure roller

16 - Adjustment device

17 - glue application device

18 - glue application roller

19 - smooth paper web 0 - cover sheet 1 - one-sided corrugated board

22 - preheating cylinder 3 - eccentric pivot axis 4 - articulation 5; 26 - Crossbar of the machine frame 7 - Crossbar of the corrugating roll module 8 - Corrugated roll module according to the invention 9 - Module frame - Bearing housing - Pressing device - Relief device

(Abutment, pressing or adjusting device) - reset device (eg return spring) - stroke limiter (eg screw, chain, cable, etc.) - swivel axis - bearing block - holder - crossbeam of corrugating roller module; 40 - crossbeam of the machine frame - pressure belt - belt tensioning device - articulation - side plate - roller - mounting plate; 48 - Corrugated roller module wheels - Articulated connection - Inner corrugating roller pivoting lever - Jaw (holder) - Clamping device - Clamping lever - Inner corrugating roller pivot lever - Outer corrugating roller pivoting lever - Clamping device - Corrugating roller module - Corrugating roller module - Modified embodiment - Corrugated roller module - Modified embodiment - Holder - rocking lever - bearing block - swivel axis - holding chair - pressing device of the outer corrugating roller - unloading device - pressure element of the clamping device - pressure element of the provision - pendulum - pendulum carriage series 1 - pendulum carriage row 2 - corrugating roller modules - replacement - possible directions of the carriages - swivel lever - pressing device - swivel lever - pressure device - Paper preparation cylinder - Paper preparation device - Clamping device - Lifting device - Tension element (cable, chain, belt, etc.) - Bearing block - Clamping device - Paper preparation system - Corrugated roller bearing housing - Cross bar of corrugating roller housing - Swing lever - Bearing - Stop 91 - Pressing device

92 - Relief device (pressing or adjusting device)

93 - Clamping device

94 - bearing block

95 - Shelf trolley

96 - Storey floor

97 - Drive the shuttle

98 - Guide rails for corrugating roller modules

99 - Tracks for pendulum cars

Claims

claims

1. Single-sided corrugated cardboard machine (1), with

a) a machine frame (2),

b) a pair of corrugating rolls (6, 7),

c) at least one pressure roller (8),

d) a glue application device (17) and

e) feeders (19, 20) and discharges (21) for paper webs,

characterized in that

f) the pressure roller (8) is arranged stationary,

g) each corrugating roller (6, 7) is rotatably mounted on a pivotable component (9, 29, 50, 54, 55, 86, 88),

h) the corrugating rollers (6,7) can be adjusted to each other and

i) the inner corrugating roller (7) is arranged deliverable to the pressure roller (8).

2. Unilateral machine (1) according to claim 1, characterized in that a) a pressing device (31, 91) acts on the pivotable component of the outer corrugating roll (6),

b) a relief device (32, 92) (which is in particular a pressing, or an adjustment, a fixed, in particular adjustable abutment device), acts on the pivotable component of the inner corrugating roller (7) and

c) the pressing and unloading devices (31, 91, 32, 92) are arranged on the machine frame (2).

3. Machine according to claim 1 or 2, characterized

in that the corrugating rolls (6, 7) are pivotably arranged with pivotable bearing shields (29), via a pivot axis (35) on a bearing block (36) fastened to the machine frame (2),

the inner corrugating roller (7) is mounted on the lateral bearing plates (29),

that a pivot lever (9) via an eccentric pivot axis (23) on the bearing plate (29) is hinged, and

in that the outer corrugating roller (6) is mounted on the pivoting lever (9) and forms a corrugating roller module (28) with the transversal bar (27, 38).

4. Machine according to one of claims 1 to 3, characterized

the bearing plate (29) has an articulated connection (43) which consists of a rotatable outer part (45), surrounds a pivot axis (35) and, together with the corrugating rollers (6, 7), the pivot lever (9), the eccentric pivot axis (23) and the transverse fastening elements form a corrugating roller module (57).

5. Machine according to one of claims 1 to 4, characterized

in that the corrugating rolls (6, 7) form a corrugating roll module (58) with the side shields (44), the pivoting levers (9, 50) connected to the bearing plates via joint connections (49) and the transverse fastening elements.

6. Machine according to one of claims 1 to 5, characterized

in that the corrugating rollers (6, 7) form a corrugating roller module (59) with the side plates (44), the pivot levers (54, 55) connected to the bearing plates via articulated connections (49) and with the corresponding transverse fastening elements, the corrugating rollers (6, 7 ) are mounted at the end of the pivot lever (54, 55).

7. Machine according to one of claims 1 to 6, characterized in that the corrugating rollers (6, 7) are mounted in its own, on the pivot lever (88) clamped bearing housings (86).

8. Machine according to one or more of the preceding claims, characterized

in that the corrugating roller module (28; 57; 58; 59) is equipped with at least one return device (33) and a stroke limiter (34).

9. Machine according to claim 4, characterized

that the outer part (45), which encloses the pivot axis, is provided by clamping elements (51, 52, 53, 74, 80) is locked in place.

10. Machine according to one of claims 1 to 9, characterized

that the side plate (44) is locked in a fixed position by clamping elements (51, 53, 56, 84).

11. Machine according to one of claims 1 to 10, characterized

in that the corrugating roller (7) is arranged to be deliverable to a pressing belt (41) or to an ultrasonic device, wherein the ultrasonic device determines the connection of the paper cover web (20) with the selected smooth paper web (19).

12. Machine according to one of claims 1 to 11, characterized

in that the corrugating roller module (28; 57; 58; 59) is equipped with at least one pivotable roller.

13. Machine according to one of claims 1 to 12, characterized

in that the corrugating roller (7) is deliverable to a pivot roller of a row of rollers, wherein the rollers of the row are pivotable and only the last roller of the row of rollers is fixedly arranged.

14. Machine according to one of claims 1 to 13, characterized

in that a corrugating roller module (28; 57; 58; 59) is arranged in the single-sided corrugated board machine (1), wherein the rotatable by Riffelwalzenmodul component (29, 50, 54) of the inner corrugating roller (7) to a pressing or adjusting device (32, 92) is supported or locked

and the machine is equipped with a to the inner corrugating roller (7) undeliverable and pivotable pressure roller (8).