EP0986478A1

EP0986478A1 - Method for cross-separating a moving paper strip

Info

Publication number: EP0986478A1
Application number: EP98936113A
Authority: EP
Inventors: Manfred Wolfgang Hartmann; Horst Bernhard Michalik
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 1997-06-06
Filing date: 1998-06-08
Publication date: 2000-03-22
Anticipated expiration: 2018-06-08
Also published as: US6419217B1; JP3490462B2; EP1110724A3; CN1103286C; EP1110723A3; JP2000512968A; DE59802247D1; DE19723749A1; EP1110723A2; EP1110723B1; ES2166175T3; WO1998055313A1; EP0986478B1; DE59807267D1; CN1259083A; ES2189774T3; EP1110724A2; EP1110724B1; DE59807218D1; ES2189775T3

Abstract

The invention relates to a method for cross-separating a moving paper strip (1) along a given separation line (68, 69). The paper strip (1) moving along a first plane of conveyance (A) is held and conveyed by a retaining system (9, 13, 21-24, 44) which can move in the direction of the production line (E). Said paper strip is then fed to a second plane of conveyance (B, C) different from the first plane of conveyance (A), whereby the paper strip (1) is torn on the desired separation line (68, 69) running at an angle to the direction of the production line (E).

Description

METHOD FOR CROSS-SEPARATING A RUNNING PAPER

The invention relates to a method for guiding a paper web according to the preamble of claim 1 and a corresponding device.

From DE 25 32 168 C3 it is known to print substrates, z. B. Paper webs from the roll carrier to the folder of a ro enrotat i onsdruc kmaschi ne middle web feed devices. It is also possible to select different paths for the printing material.

The invention has for its object to provide a method for guiding a paper web and an associated device.

This object is achieved by the features of claims 1, 4, 5, 7 and 21.

The advantages that can be achieved with the invention consist, in particular, of redirecting these or one or more partial paper webs independently of one another into preselectable running paths from a number of running paper webs without the machine or system having to be shut down and the Lanes / partial lanes must be reassigned by the operating personnel. In a web-fed rotary printing machine e.g. B. Under certain circumstances, a running change of a web or partial web could be carried out during the running production.

An embodiment of the invention is shown in the drawing and is described in more detail below.

Show it:

Fig. 1 is a schematic representation of a

Side view of a device for cross cutting;

Fig. 2 shows a section II - II of Figure 1 in an enlarged view.

Fig. 3 is a plan view of FIG. 1, but without conveyor belts.

It is a device 3 for reducing the tear strength of a printing substrate web 1 running in web running direction, e.g. B. a paper web is provided. You can e.g. B. from a Querperforiereinr device 3 or from another device, for. B. a device (nozzles) for applying a liquid trace of a solvent l or water across the width of the web 1 to be processed tend or Partial web 16; 17; 18; 19 exist. It can - seen in web running direction - be arranged in front of or behind a known longitudinal tennei nri direction 2 of the running printing material web 1 - hereinafter referred to as paper web 1.

The Querper oriereinrichtung 3 may consist of mutually adjustable patrizzy countries 4 and die cylinders 6.

The paper web 1 can in a first running path A from the running path A or in a further running path, for. B. running path B or into another running path C. Path A runs z. B. substantially horizontally between two systems 7 Weiterle; 8 through. The running path B runs underneath the running path A, the paper web 1 via two papers Le twa Izen 9; 11 is redirected. The running path C runs above the running path A.

The further systems 7; 8 are devices for gripping and temporarily forwarding a part of the paper web 1 or partial paper webs 16; 17; 18; 19. For example, B. so-called driven suction belts, suction rolls but also electrostatic belt devices. A plurality of deflecting rollers 14 are provided for their U steering.

The paper web 1 can also form several partial paper webs 16; 17; 18; 19 can be cut lengthways. The longitudinal t rennei nri direction 2 (FIG. 3), which is known per se, serves this purpose.

Seen in the production running direction E of the paper web 1, z. B. A behind the device 3 for reducing the tear strength of the web 1 or partial webs 16; 17; 18; 19 and before the further systems 7; 8 a device 13; 21 to 24 for gripping a beginning of a web 1 or part web 16 to 19 on its top and / or bottom and its subsequent deflection into a second running path, for. B. B or C and back. Eg from running paths A + C only in running path A or from running path A + B back to running path A or from running path A + C to running path A + B or from running path A + B to running path A + C etc. The path to be redirected or Partial web is clamped in this phase in two spaced-apart devices under tension. This happens e.g. B. between two pairs of pulling rollers, between a pair of pulling rollers and cylinders (e.g. rubber blanket cylinders) of a printing unit, between cylinders of two spaced-apart printing units. The web 1 or the partial webs 16 to 19 are thus clamped in while maintaining a web tension and are drawn.

The measures just described can be done in a particularly simple manner by changing the number of partial tracks per running path (A; B; C) and thus The composition and number of pages of the signatures can be selected, of course depending on the assignment of the printing units. Known railway overpasses are then necessary for this.

The following processes take place:

The clamped printing material web 1 or partial webs 16 to 19 each move along a running path z. B. A; B; C. They are applied by force through the device for deflecting a web 13; 21 to 24 on their top and / or bottom from their running path z. B. A in a different path z. B. Running path B or running path C is drawn. Since the device for deflecting 13; 21 to 24 a device for holding 13, 44 and conveying 13; 44 of the web / partial web, so the captured web 1; 16 to 19 simultaneously along the previous path z. B. Path A and the newly selected path z. B. Running path C is moved and separated at a web break 1 or partial web 16 to 19 introduced cross break / predetermined tear line (cross perforation or water trail). This happens because the tensile force exerted on the web / partial web has exceeded the tensile strength at the transverse set point. The affected web / partial web is continuously separated so that a "new" web end 5 and a "new" web start 15 are created. The web 1 or partial webs 16 to 19 together with its "new" end 5 z. B. of drawing rollers, printing units, etc. along the previous path z. B. drawn. The "new" path start 15 of path 1 or partial paths 16 to 19 and these themselves are used by the deflection device (s) 13; 44 held and along the newly selected paths, e.g. B. C moves and finally to a further Lei t system z. B. 9 and delivered to an intended destination, for. B. a Zugwalzenpaa, pressure nip a printing unit transported and taken over by them.

The break point / break point can actually be designed in almost any shape.

You can e.g. B. be formed as a right-angled tip in the form of a right-angled triangle, starting at one of the two side edges; but also as a simple, not so rage r, d. H. straight demolition.

Such a device for deflecting 13; 21 to 24, which is suitable for deflecting, holding and conveying a web 1, 16 to 19, z. B. from a suction belt station or from several adjacent nander and each centrally located above each Tei lbedruckstoff f web 16 to 19 suction belt stations 21 to 24. The suction belt stations 21 to 24 have the same structure. Only the suction belt station 21 (FIG. 1) is described below.

The suction belt station 21 consists of several seen in the web running direction, rear nander on five sides closed chambers 26; 27; 28; 29, with z. B. trapezoidal cross-section (Fig. 2). They are each articulated to one another on their wider base sides 31, for. B. by means of hinges. The narrow base sides 32 are slightly convex and have a large number of holes. The narrow base sides 32 are adjustable at a distance by means of tension locks 33 known per se. Such an arrangement of the chambers 26 to 29 allows either a straight line or a convex or concave curved suction path.

A start 34 and an end 36 of each suction belt station 21, seen in the production direction E, each have a holder 37, 38 connected to the chambers 26, 29, which supports a front belt roll 39 and a rear belt roll 41, respectively. All rollers, rolls and the like are in side frames 45; 50 mounted, as well as the bracket 37.

The chambers 26 to 29 have on their wider base 31, seen in the direction of production E, left and right guides 42; 43 for a revolving suction belt 44. The suction belt 44 has holes 46, 47, 48, 49, 50 which are spaced apart from one another over its entire length and width and which are formed with elongated holes 52; 53; 54; 55; 56 cover alternately at times. The suction belt 44 is on both belt rollers 39; 41 out. The tape roll 39 is z. B. driven so that the suction belt 44 on its side near the web with machine speed and in product i ons direction E promotes. This drive takes place, for. B. via toothed belt from the device 3, by means of z. B. a speed-controllable electric motor.

Each chamber 26 to 29 has a nozzle 58 on each side, on the air lines 60; 61; 62; 63 are connected. They are optionally connected to a suction air or compressed air source. A plurality of chambers 26; 27; 28 with suction air and at least the last chamber 29 with compressed air.

The outgoing end 36 of the suction belt station 21 is adjustable in height, for. B. by means of a se i tengest 11 fixed working cylinder 64, the counter bearing 45 on a se i tengest l If it ten Traverse 51 ge location rt.

According to another embodiment variant, the device for deflecting 13; 21 to 24 with a device for holding and conveying can also be designed as a rotatable suction roller 13. It is supplied with suction air via a rotary inlet (not shown). The entire length of the suction roll 13 can correspond to a width of the Printing material web 1 or only one or more partial lengths corresponding to the width of a partial web 16, 17, 18 or 19 are acted upon by suction air. In this case, approximately 270 ° of the inner circumference of the suction roller 13 are covered with a sealing jacket 20, so that the suction air is effective only on the circumference of the suction roller 13 which is applied by the web 1 or the corresponding partial webs at an angle Beta of approximately 90 ° . The web 16 tears on the jacket from an axially parallel line 73 (line on which the running direction of the web 16 changes from one direction - e.g. horizontal direction - to another direction - e.g. vertical direction) across the So l It renn- / Rei ß li ni e 68. The leading part of the partial web 16 continues over the Papi er Lei twa Izen 9; 11 in the running path B. The torn-off part of the partial lane with the new beginning of the path 15 continues along the running path A and from there, if necessary, to another running path, e.g. B. Running path C. The "new" beginning 15 of the partial web 16 is still sucked in in the area of the penultimate chamber 28 and expelled in the area of the last chamber 29 by means of blown air and thus between the upper and lower bands of a further system 7; 8 brought and from there into a preselected running path, for. B. Running path C.

The method for cross cutting and direction change rn a running substrate, z. B. Paper web proceeds as follows: A full-width paper web 1 running in the direction of production E is by means of the Long ago, device 2 ran longitudinally into four 1/4 wide partial paper webs 16 to 19 and (via the paper lines izen 9; 7) led in a first running path A. In the following, e.g. B. the left web 16 by means of a device 3 for reducing the tensile strength of the web, for. B. the transverse perforating device 3, with a predetermined angle ± alpha, z. B. from 0 ° to 60 ° - preferably 45 ° - to the side edge 66 or 67 or the partial paper web 16 with a So 111 racing / tearing line 68 or 69 in the form of z. B. a Que rpe rf orat i ons li ni e or cross-water trail provided. After the lane 1 or partial lane has been separated, a “new” lane end 5 and a trailing “new” lane start 15 of lane 1 or partial lane 16 are formed.

(+) Alpha means that the angle Alpha is related to the right side edge 67 of the partial web 16; (-) Alpha means that the angle Alpha is related to the left side edge 66 of the partial web 16.

The suction belt station 21, e.g. B. at a short distance f = one millimeter, compressed and suction air is applied. The first chambers 26 to 28 are supplied with suction air and at least the last chamber 29 is supplied with blown air. The web / partial web is sucked in and fixed on the suction belt 44. The web / partial web 16 is to be diverted from running path A into running path C. The z. B. moving in the path A web / partial web 16 has a speed that is the peripheral speed of the suction belt 21 is the same. The suction belt 21 sucks the web 16 to be deflected so that it does not slip and tries it in the new preselected running path, e.g. B. C to move (pull). That is, the web 16 is temporarily moved both in the running path A and in the new running path C. As a result, the tensile stress exerted on the web 16 increases until the artificially generated reduction in the tensile strength of the web 16 is exceeded and the web 16 is separated transversely along a predetermined breaking line (tear line). A part of the track 16 continues in the path A and the torn part is transported in the path B.

After completing the cross separator and

Direction change process, the air supply is ended and the suction belt station 21 is removed from the vicinity of the paper web 1 by means of the working cylinder 63, i. H. swung up.

It is also possible to transfer one or more other partial lanes down to another running path. This can be done by adjusting the chambers 26 to 29 and

Suction belt stations 21 to 24 take place in relation to one another in such a way that the suction belt 21 instead of simulating a convex shape only simulates a concave shape. The paper or partial webs are thus separated by holding on and changing direction.

However, a device for completely severing the paper web 1, 16 to 19 can also be provided. It consists e.g. B. from an up and down movable sword with a knife that interacts with a fixed shear bar. The paper web 1, 16 to 19 is stopped or moves slowly and is then cut across. During this process, the paper web 1, 16 to 19 is held in place by suction belts 44 via chambers as described above. Two drivable suction belt systems 44 arranged one behind the other, as seen in the product direction, are provided. The knife moves up and down between them and cuts the paper web 1, 16 to 19 across. This creates a new web end 5 and a new web start 15. The new web end 5 is held by the front suction belts system 44 and transported further. The new web start 15 is held by the rear suction belt system 44 (viewed in the direction of production E) and (finally) transported on.

Reference list

1 substrate

2 Longitudinal separation

3 device for reducing the tensile strength

4 Pat r i zenzy l i nde r (3)

5 web ends, "new"

6 die cylinders (3)

7 Further system, first

8 further system, second

9 paper guide roller

10 further system

11 Papi he Lei twa Ize

12 paper guide roller

13 device for deflection, first

14 device for deflecting, second

15 start of path, "new"

16 partial web, partial paper web

17 partial web, partial paper web

18 partial web, partial paper web

19 partial web, partial paper web

20 coat (13)

21 device for deflection, third, suction belt station

22 device for deflection, fourth, suction belt station

23 Deflection device, fifth, suction belt station

24 device for deflection, sixth, suction belt station

25 -

26 chamber (21; 22; 23; 24)

27 chamber (21; 22; 23; 24) Chamber (21; 22; 23; 24) Chamber (21; 22; 23; 24)

Base side, wide base side, narrow turnbuckle (21) start (inlet)

End (outlet) bracket (26) bracket (29) tape roll (37)

Belt reel (38) Guide (44) Guide (44) Suction belt (21) Storage (64) Holes (44) Holes (44) Holes (44) Holes (44) Holes (44) Traverse (64) Elongated holes (31 ) Long hole (31) Long hole (31) Long hole (31) Long hole (31) 57 58 Sockets (26 to 29) 59 60 Air line (26) 61 Air line (27) 62 Air line (28) 63 Air line (29) 64 Working cylinder (21 to 24) 65 66 Side edge (17) 67 Side edge (17) 68 Sol It racing / tearing line (17) 69 So l It racing / tearing line (17) 70 71 parting line (9)

A run pf ad, first

B running path, second

C running path, third

E production direction (1)

d distance (1; 16 to 19)

Alpha angle Beta angle

Claims

Expectations

1. The method, characterized in that a web (1) or partial paper web (16, 17, 18, 19) drawn in a web-fed rotary printing machine along a first running path (A) transversely to the running direction of the web (1) or partial paper web (16, 17, 18, 19) is mechanically separated so that a new regular start (15) of the paper web (1) or partial paper web (16, 17, 18, 19) is formed, which can be moved along a second path (B; C).

2. The method according to claim 1, characterized in that the new beginning (15) arises from a machine-generated crack along a regular tear line to reduce the strength in paper web / part paper web longitudinal direction.

3. The method according to claim 1, characterized in that the new beginning (15) of the paper web (1) or partial paper web (16, 17, 18, 19) by completely cutting through the paper web (1) or partial paper web (16, 17, 18th , 19) is created.

4. A method for guiding a paper web (1, 16, 17, 18, 19) movable in product direction, characterized in that the longitudinal tear-resistant i gkei t one or more selected paper webs (1, 16, 17, 18th , 19) along one each in position and shape Predeterminable tear line is reduced, that then on the weakened in its longitudinal tear strength web / webs (1, 16, 17, 18, 19) by force in le i tion on their upper or lower side from their original running path (A) is guided into a new running path (B; C), whereby this paper web (1, 16, 17, 18, 19) at the desired tear line (68) into a new end (5) and a new beginning (15 ) is cross-separated so that the new beginning (15) is then moved along the new running path (B; C) and the new end (5) along the original running path (A).

5. A method of guiding a paper web, characterized in that the paper web (1) running in a first running direction (A) is weakened at an angle (alpha) to the running direction (A) in its longitudinal tear-resistant i gkei t that subsequently the weakened paper web (1) is deflected in a second running direction (B or C) and passed on, as a result of which the paper web (1) is cross-separated at the desired tear line (68).

6. The method according to claim 1 or 2, characterized in that the tear line of

Longitudinal tear strength weakening at an angle (± alpha) in the range from 30 ° to 60 ° to the web.

7. Device for performing the method according to claims 1 to 5, characterized in that each has a predetermined tear line (68) having paper web (1, 16, 17, 18, 19) is assigned a holding system (21 to 24 or 13) which can be moved in the running direction (A, B, C).

8. The device according to claim 7, characterized in that the fest t ha l tesys tem (21 to 24) is designed as a suction belt station (21 to 24).

9. The device according to claim 7, characterized in that the fixed t ha l tesystem (9) is designed as a suction roller (13).

10. Device according to claims 7 to 9, characterized in that the running paths (A, B, C) lie in separate planes, that a second conveying level above a first conveying level, that a further conveying level lies below the first conveying level.

11. The device according to claims 7 to 10, characterized in that the suction belt station (21 to 24) has a spacing (d) to the paper web (1; 16 to 19) rotating suction belt (44).

12. Device according to claims 7 to 11, characterized in that at least the end (36) of the suction belt station (21 to 24) is arranged height-adjustable by means of an adjusting device (64).

13. Device according to claims 7 to 12, characterized characterized in that each suction belt station (21 to 24) consists of a plurality of air chambers (26 to 29) arranged one behind the other in the direction of production (E).

14. Device according to claims 7 to 13, characterized in that the chambers (26 to 29) are each articulated to one another.

15. Device according to claims 7 to 14, characterized in that the suction belt (44) has holes (46 to 50) over its width and length.

16. Device according to claims 7 to 15, characterized in that each chamber (26 to 29) on its the paper web (1, 16 to 19) facing underside (31) over its width and length elongated holes (52 to 56).

17. The device according to claims 7 to 16, characterized in that the holes (46 to 50) of the suction belt (44) with the elongated holes (52 to 56) of the underside (31) of the suction belt station (21) can be brought into overlap at times.

18. The apparatus according to claim 11, characterized in that the chambers (26 to 29) are optionally connected with a compressed air or with a suction air tque l le.

19. Device according to claims 7 to 18, characterized in that the chambers (26 to 29) are connected to one another in an articulated manner such that the papi e railroad-near conveyor track formed by the suction belt (44) optionally runs in a straight line or convex or concave manner.

20. Device according to claims 7 to 19, characterized in that a speed lively Ibare r electric motor is provided as the drive for the suction belt (44).

21. Device for performing the method according to claims 1 and 3, characterized in that a t act s expensive rba re cross-cutting device is provided.

22. The apparatus according to claim 21, characterized in that the cross-cutting device has a cutting knife, that the movement path of the cutting knife between two suction belt systems or suction rolls extends transversely to their conveying direction.