EP0183862B1 - Dispositif pour la fabrication de papiers format pauvres en poussière - Google Patents

Dispositif pour la fabrication de papiers format pauvres en poussière Download PDF

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Publication number
EP0183862B1
EP0183862B1 EP84114647A EP84114647A EP0183862B1 EP 0183862 B1 EP0183862 B1 EP 0183862B1 EP 84114647 A EP84114647 A EP 84114647A EP 84114647 A EP84114647 A EP 84114647A EP 0183862 B1 EP0183862 B1 EP 0183862B1
Authority
EP
European Patent Office
Prior art keywords
paper
arrangement
suction
paper web
dust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP84114647A
Other languages
German (de)
English (en)
Other versions
EP0183862A1 (fr
Inventor
Temming Papier Gmbh & Co. Steinbeis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STEINBEIS TEMMING PAPIER GmbH and CO
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE8484114647T priority Critical patent/DE3481828D1/de
Priority to AT84114647T priority patent/ATE51569T1/de
Priority to EP84114647A priority patent/EP0183862B1/fr
Priority to JP60010701A priority patent/JPS61136798A/ja
Publication of EP0183862A1 publication Critical patent/EP0183862A1/fr
Application granted granted Critical
Publication of EP0183862B1 publication Critical patent/EP0183862B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction

Definitions

  • the invention relates to a device for producing low-dust format paper by longitudinally and transversely cutting a paper web, with at least one device for suctioning off paper dust accumulating when it acts on the paper.
  • Format papers in particular as copy paper, are increasingly required. It is important that these format papers are largely dust-free. It is generally known that when these format papers are produced from a continuous paper web by longitudinal and transverse cutting, paper dust is produced to a considerable extent in particular if the paper web used for this purpose has been produced from waste paper components. It can be assumed that paper slitting will occur to a considerable extent, especially when slitting, and this must be removed.
  • DE-A-3219774 describes a dust absorbing device for lye cutters. It is extracted directly from the cutting point.
  • the invention is therefore based on the object of providing a device for producing format papers by cutting lengthwise and transversely of a paper web, with which format papers which are largely free of dust can be produced in the simplest possible way.
  • This object is achieved according to the invention by a first device for suctioning paper dust directly in the longitudinal cutting area and a downstream second device for suctioning paper dust in the area of the longitudinal interfaces of the paper web.
  • the suction of the paper dust in connection with the slitting is not limited to the slitting area itself, but to a location immediately afterwards as a supplementary suction directly in the area of the longitudinal interfaces. This leads to an improved removal of the paper dust, which is caused by the slitting.
  • a blowing device for suctioning paper dust between the two aforementioned devices for suctioning paper dust in such a way that opposite to the suction device at the longitudinal interfaces on the other side of the paper web, ie a blowing device is arranged opposite the suction device.
  • This blowing device blows paper dust located in the area of the longitudinal edges of the paper web at the longitudinal interface to the other side of the paper web where the suction device is located in order to suck off the blown off dust. It is advantageous that the blowing process separates the longitudinal edges resulting from the longitudinal cut and thus enables optimum dust removal in addition to the other two dust removal measures.
  • the first device for suction of paper dust is below the paper web
  • the second device for suction of paper dust is also below the paper web
  • the third device for suction of paper dust is above the paper web.
  • the first device for suctioning paper dust expediently forms a suction chamber below the lower longitudinal cutting knives, which is partially limited by guide tables for the paper web arranged in front of and below the longitudinal cutting point in the running direction of the paper web. These guide tables therefore advantageously fulfill a double function.
  • the second device for suctioning paper dust which is connected downstream of the longitudinal cutting point, comprises the guide table already mentioned, here designed as a suction table, in which longitudinal slots are provided along the longitudinal interfaces of the paper web are formed, which are connected to a suction chamber. It is particularly advantageous if these longitudinal slots have edges which run inwards and downwards transversely to the direction of movement of the paper web. While the paper web moves over the suction table and thereby with the longitudinal interfaces over the mentioned longitudinal slots, this leads to a separation of the longitudinal edges created by the longitudinal cut in the sense of an optimal dust removal.
  • this constructive design of the longitudinal slots has an advantageous effect if several superimposed paper webs are cut and the longitudinal slots cause the superimposed paper webs to be fanned out in the area of the longitudinal cuts, so that dust located between the paper webs is optimally removed and, moreover, that after the longitudinal cutting at the interfaces adhesive longitudinal edges of the paper webs are separated.
  • a particularly advantageous structural design results if not only the aforementioned longitudinal slots for the second device for suctioning paper dust are formed in the aforementioned suction table, but also slots that lie between the blowing device and the third device for suctioning paper dust, so that dust is also preferably removed in the area of the longitudinal intersections.
  • a fourth device for suctioning paper dust is expediently located in the area of the cross-cutting knife above or below the paper web, preferably below the paper web.
  • the paper web Before slitting, the paper web is often guided along the edge of a breaking bar.
  • paper dust also arises, which can be removed by a fifth device provided there for suctioning paper dust.
  • This device is preferably designed to be integrated with the crushing bar in such a way that a suction channel is arranged in the direction of movement of the paper web in front of the crushing bar edge, which is connected to a suction chamber arranged inside the crushing bar. This avoids the need to install this paper dust extraction device as a separate device.
  • a material block is advantageously used, on which two edges of the breaker bar are formed.
  • This block of material is detachably attached to a hollow box forming a suction chamber, so that after one edge of the breaking bar has worn out, the other breaking bar edge can be used after twisting the block of material.
  • a suction channel is provided next to each breaking bar edge, the suction channel adjacent to the respective effective breaking bar edge being connected to the suction chamber via a suction opening located in the hollow box, so that air can only be sucked off through the specific suction channel and thus dust can be effectively removed in the area of the breaking bar edge.
  • a sixth device for suctioning paper dust is provided, specifically in the area of the transport path of a paper giant, such that a suction chamber is preferably arranged below the transport path for the paper giant and is connected to the edge area of the paper giant via corresponding suction openings , so that air can be drawn through this edge area from this suction chamber.
  • the resulting air flow sucks away any remaining dust, so that ultimately largely dust-free format paper can be removed at the end of a system for producing format paper.
  • FIG. 1 shows from left to right a station A in which the paper web is guided past a break bar. This is followed by a station B, in which, if desired, the paper web is perforated through a rotary hole. This is followed by the longitudinal cutting of the paper web in a station C. The paper web is cross-cut in a subsequent station D, which is followed by a sorting switch E and a collecting station F, where the cut paper sheets are sorted or stacked. In the last station G, the stacked sheets of paper are transversely transported.
  • the crushing bar consists of a hollow box 58, in which a suction nozzle 60 is fastened on the side facing away from the breaking edge 56, to which suction nozzle 60 a hose 62 is fastened.
  • the breaking edge 56 is located on a block 64 which is fastened on the side of the hollow box 58 facing away from the suction nozzle 60.
  • a suction channel 66 in block 64 which is aligned with a suction opening 68 in the hollow box 58.
  • Two suction channels 66, 67 are provided in a symmetrical arrangement, so that the block 64 can be changed in position so that after the breaking edge 56 has been worn, the symmetrically arranged breaking edge 57 can be used.
  • the entire crushing bar 52 can be pivoted back and forth about the central axis M of the roller 54 to a specific deflection angle (a).
  • station C is shown in more detail.
  • An upper knife 72 and a lower knife 74 are rotatably mounted in a frame 70 of this station, these knives being designed as circular knives which are arranged parallel to one another in the direction of their axis of rotation, an annular cutting edge 75 of the lower knife 74 and an annular cutting edge 73 of each Interacting upper knife 72 and overlap each other in a slitting area a.
  • the axes of the circular knives 72, 74 are aligned parallel and one above the other perpendicular to the direction of movement of the paper web.
  • the paper web runs continuously over the guide plate 76 and the suction table 78, with the aforementioned knife cutting the paper web lengthways. With this slitting, paper dust develops, which should be removed as completely as possible. In the large area of longitudinal cutting, this is done in three ways, namely by means of a first suction device 80 located directly below the lower knife 74, a second suction device 82 adjoining it, located above the suction table 78 and behind the upper knife 72, and one below the suction table 78 in the direction of movement third suction device 84 located on the paper web behind the second suction device 82.
  • first suction device 80 there are a row of suction openings 88 in an L-shaped lower knife bar 86 immediately below the lower knife 74, below which a suction box 9 is connected to the lower knife bar 86 and is connected to a hose 94 via a connecting piece 92.
  • the guide plate 76 already mentioned is fastened to the vertical leg of the lower cutter bar 86 above a bar 96.
  • a cover plate 98 is fastened in the inner angular region of the lower cutter bar 86 in order to prevent dust nests from forming there.
  • an end plate 100 is attached, which extends to the lower cutter 74 and thus forms a suction space 102 in the lower region of the lower cutter together with the lower cutter 74, the strip 96, the guide plate 76 and the suction table 78.
  • the second suction device 82 has a blow pipe 104, which is located below the suction table 78. In the radiation area of this blow pipe 104 there are slots 77 in the suction table 78, through which the interfaces of the paper web extend after the longitudinal cutting, so that dust still at the interfaces is blown off and directed into the mouth opening 106 of an upper suction pipe 108.
  • the third suction device 84 is located behind the second suction device 82 with respect to the direction of movement of the paper web and essentially consists of a suction box 110 located below the suction table 78, to which a hose 112 is fastened.
  • the suction box 110 is connected to elongated holes 114 in the suction table 78, through which the previously mentioned interfaces of the paper web run after the longitudinal cutting.
  • this third suction device 84 there is a further guide plate 116, to which a pair of pulling rollers 118 is connected.
  • FIG. 4b shows a section through an elongated hole 114 along the line b-b in FIG. 4a.
  • the upper knife 72 and the lower knife 74 are schematically closed on the left side see, as well as the suction table 78 adjoining it in the direction to the right, ie in the direction of travel of the paper web, with the suction box 110 underneath.
  • the suction table 78 adjoining it in the direction to the right, ie in the direction of travel of the paper web, with the suction box 110 underneath.
  • the already mentioned pair of pulling rolls 118 which are pulling rolls, are connected which the paper web is pulled over the suction table.
  • the edges 79 of the longitudinal slots 114 which run transversely to the longitudinal direction of the longitudinal slots 114, are arched downward.
  • the radius of this arching is about 3 mm when new and changes with increasing wear.
  • the width of the longitudinal slots depends on the. Paper quality and is selected in exact coordination with the length of the longitudinal slots, the opening cross section of the longitudinal slots depending on the suction power and the available space in the machine.
  • the longitudinal slots are located immediately behind the slitter, but must be arranged in the area of uniform tension in front of the cross knife.
  • a single, inherently rigid suction box or suction table does not necessarily have to be used.
  • the longitudinal slots can be changed in the width direction in order to adapt to the respective sheet format.
  • the convex edges 79 serve to fan out the interface of one or more superimposed paper webs if the paper web with the interface is continuously moved over the longitudinal slot 114 and air is sucked through the longitudinal slots into the suction box, which air is not only deforming Has an effect on the paper sheets in the longitudinal section area, but also has an effect in that residual dust still present, favored by the fanning out, is drawn off into the suction box.
  • a suction device in this regard results from FIG. 5, where two identical knife drums 122 lying one above the other are rotatably mounted in a frame 120 in such a way that the knives 124 located therein come into contact with one another in a self-sharpening manner at a very specific point, so that at this point a cross cutting of the Paper web is done.
  • Below the lower knife drum 122 there is a U-shaped bar 125 which surrounds at least the lower half of the lower knife drum 122 and thus forms a suction space 126.
  • suction openings 128 are formed, to which a suction device, not shown, is connected.
  • a guide plate 130 for the paper web In the direction of movement of the paper web from left to right in front of the two knife drums 122 there is also a guide plate 130 for the paper web, which in the rest enlarges the suction space 126 up to the top of the lower knife drum.
  • the running into the area of the cross cutters is stabilized by guiding the paper web over the suction table 78 already mentioned and described, so that a perfect cross cutting can take place.
  • FIG. 6 a cross conveyor belt 132 is shown on which the paper giant R rests.
  • the paper giant R is laterally delimited by support bands 134 deflected about vertical axes, a small space remaining between the paper giant and the support bands.
  • the paper web After passing through station B, the paper web arrives in station C and there in the area of the slitter. In this area, triple suction takes place in interaction from above or from below, first by blowing air downwards in the immediate knife area, then by blowing from the bottom up, ie suction upwards, and finally by suction downwards. especially in the longitudinal section of the paper web, the paper dust accumulated during cutting is removed in an optimal manner. In the case of the latter extraction, the interfaces of the paper web run through the aforementioned longitudinal slots 114 via the suction table 78. In addition to dust extraction, this leads to a stabilization of the paper web.
  • the suctioning of the dust in this area is additionally facilitated in that these elongated holes are arched transversely to the direction of movement of the paper web.
  • the cut paper web is "opened” in the cutting area, so that the dust can also be removed from the inner area of the paper webs.
  • Dust extraction can also be improved by brushes acting over the longitudinal slots. These can be designed as rotary brushes, for example, which are arranged directly above the longitudinal slots.
  • the vacuum in the dust extraction in the area of the lower knives in the longitudinal and / or cross cutting area and / or on the suction table 78 can be maintained at cutting speeds between 100 to 400 m / min., Advantageously in the range from 250 to 840 millibars. The best results are achieved in this area, although it is possible to set the vacuum values specified above the limit values.
  • the cross cutting then takes place in the station D, where the suction already described takes place in the area of the lower knife in order to remove the paper dust which arises during the cross cutting.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Filtering Materials (AREA)

Claims (12)

1. Dispositif pour la fabrication de papiers format pauvres en poussières par découpage longitudinal et transversal d'une bandé de papier, comprenant au moins un dispositif d'aspiration la poussière de papier produite lors de l'action sur le papier, caractérisé par un premier dispositif (80) destiné à aspirer la poussière de papier directement dans la zone de coupe longitudinale (a) et un deuxième dispositif (84) placé en aval, destiné à aspirer la poussière de papier dans la zone des points de coude longitudinaux de la bande de papier (P).
2. Dispositif selon la revendication 1, caractérisé en ce qu'entre les de dispositifs (40, 84) destinés à aspirer la poussière de papier selon la revendication 1, un troisième dispositif (82) supplémentaire destiné à aspirer la poussière de papier est disposé de façon qu'un dispositif de soufflage (104) soit disposé en face de celui-ci, sur les points de coupe longitudinaux, de l'autre côté de la bande de papier (P).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le premier dispositif (80) est disposé audessous de la bande de papier (P), que le deuxième dispositif (84) est également disposé au-dessous de celleci et que le troisième dispositif (82) est disposé audessus de la bande de papier.
4. Dispositif selon la revendication 1, caractérisé en ce que le premier dispositif (80) destiné à aspirer la poussière de papier forme, au-dessous de la lame inférieure de découpe longitudinale (75), une chambre d'aspiration (102), et est délimité partiellement par des tables de guidages (76, 78) de la bande de papier (P), disposées dans la direction de défilement de la bande de papier (P), devant et derrière le point de découpe longitudinale (a).
5. Dispositif selon la revendication 1, caractérisé en ce que le deuxième dispositif (84) comprend une table de guidage (78) réalisée sous la forme d'une table aspirante et placé en aval du point de découpe longitudinal (a), pour l'aspiration de la poussière de papier, table dans laquelle des fentes longitudinales (114) sont réalisées le long des points de découpe longitudinale de la bande de papier (P) et reliées à une chambre d'aspiration (110).
6. Dispositif selon la revendication 2, caractérisé en ce que le dispositif de soufflage (104) et le troisième dispositif (82) d'aspiration de' la poussière de papier sont disposés chacun sur un côté de fentes (77) réalisées dans la table de guidage (78) placée en aval du pont de découpe longitudinal (a).
7. Dispositif selon la revendication 5, caractérisé en ce que les fentes longitudinales (114) présentent transversalement à la direction du déplacement de la bande de papier (P) des bords (79) courbés vers l'intérieur et vers le bas.
8. Dispositif selon la revendication 1 et 2, caractérisé en ce qu'un quatrième dispositif (125, 126, 128) destiné à aspirer la poussière de papier est disposé dans la zone de la lame de découpe transversale (122), au-dessus ou audessous de la bande de papier (P).
9. Dispositif selon la revendication 1, 2 et 8, caractérisé en ce qu'un cinquième dispositif (52) destiné à aspirer la poussière de papier est disposé devant le point de découpe longitudinal (a), dans la zone d'une arête de bande de broyage (56), dans la direction de déplacement de la bande de papier (P).
10. Dispositif selon la revendication 9, caractérisé en ce que le cinquième dispositif (52) d'aspiration de poussière de papier est intégré dans la bande de broyage de façon que, dans le sens de déplacement de la poussière de papier et devant l'arête de bande de broyage (56), il soit disposé un canal d'aspiration (66) relié à une chambre d'aspiration (58) réalisée à l'intérieur de la bande de broyage.
11. Dispositif selon la revendication 10, caractérisé en ce que deux arêtes de bandes de broyage (56; 57) sont formées par un bloc de matière (64) monté de manière démontable sur un caisson creux (58) formant la chambre d'aspiration, et en ce qu'à côté de chaque arête de bande de broyage (56; 57), il est disposé un canal d'aspiration (66; 67) dont le canal d'aspiration (66) voisin de l'arête de bande de broyage (56) est relié à la chambre d'aspiration, par l'intermédiaire d'un orifice d'aspiration (68) se troivant dans le caisson creux (58).
12. Dispositif selon la revendication 1, caractérisé en ce qu'un sixième dispositif (136,138, 140, 142) destiné à aspirer la poussière de papier dans la zone de la trajectoire de transport, d'une rame de papier (R) est prévu, de façon qu'une chambre d'aspiration (136) soit reliée à au moins une zone de bordure de la rame de papier (R), par des orifices correspondants (142).
EP84114647A 1984-12-03 1984-12-03 Dispositif pour la fabrication de papiers format pauvres en poussière Expired - Lifetime EP0183862B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8484114647T DE3481828D1 (de) 1984-12-03 1984-12-03 Vorrichtung zur herstellung staubarmer formatpapiere.
AT84114647T ATE51569T1 (de) 1984-12-03 1984-12-03 Vorrichtung zur herstellung staubarmer formatpapiere.
EP84114647A EP0183862B1 (fr) 1984-12-03 1984-12-03 Dispositif pour la fabrication de papiers format pauvres en poussière
JP60010701A JPS61136798A (ja) 1984-12-03 1985-01-22 無塵の規格紙を製造する機械

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84114647A EP0183862B1 (fr) 1984-12-03 1984-12-03 Dispositif pour la fabrication de papiers format pauvres en poussière

Publications (2)

Publication Number Publication Date
EP0183862A1 EP0183862A1 (fr) 1986-06-11
EP0183862B1 true EP0183862B1 (fr) 1990-04-04

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Application Number Title Priority Date Filing Date
EP84114647A Expired - Lifetime EP0183862B1 (fr) 1984-12-03 1984-12-03 Dispositif pour la fabrication de papiers format pauvres en poussière

Country Status (4)

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EP (1) EP0183862B1 (fr)
JP (1) JPS61136798A (fr)
AT (1) ATE51569T1 (fr)
DE (1) DE3481828D1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620354U (ja) * 1991-12-28 1994-03-15 ニスカ株式会社 給紙装置
EP0590157B1 (fr) * 1992-04-17 1999-03-03 Noritsu Koki Co., Ltd. Appareil de tirage photographique tridimensionel
JP3100240B2 (ja) * 1992-09-04 2000-10-16 三菱重工業株式会社 円板型刃物回転式切断装置
JP3527330B2 (ja) * 1995-09-22 2004-05-17 富士写真フイルム株式会社 写真フイルムの製造方法及び装置
IT1292415B1 (it) * 1997-06-25 1999-02-08 Fabio Eugenio Malnati Dispositivo di depolverizzazione particolarmente adatto per la eliminazione dei residui polverulenti prodotti durante il taglio
DE102004060849B3 (de) * 2004-12-17 2006-04-06 Hildebrand Systeme Gmbh Vorrichtung zur Entfernung von Bearbeitungsstaub, insbesondere Schnittstaub
EP3513935B1 (fr) 2016-09-14 2023-06-21 Yoshino Gypsum Co., Ltd. Dispositif de coupe et dispositif de production avec un tel dispositif de coupe
CN111648112B (zh) * 2020-04-27 2022-08-02 海安迪斯凯瑞探测仪器有限公司 一种控制裁剪棉毡尺寸精度的方法
DE102021119691A1 (de) 2021-07-29 2023-02-02 Voith Patent Gmbh Staubabsaugung am Rollenschneider

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217176C (fr) *
DE303958C (fr) *
GB291920A (en) * 1927-04-08 1928-06-14 Blackie & Son Ltd Improvements in or relating to printing machinery
US2956301A (en) * 1957-07-12 1960-10-18 Oxy Dry Sprayer Corp Web cleaning apparatus
DE1231106B (de) * 1965-07-23 1966-12-22 Jagenberg Werke Ag Vorrichtung zum Laengsschneiden laufender Werkstoffbahnen
SE319969B (fr) * 1969-02-14 1970-01-26 Svenska Flaektfabriken Ab
DE2164554A1 (de) * 1971-12-24 1973-06-28 Jagenberg Werke Ag Vorrichtung zum staubfreien laengsschneiden laufender werkstoffbahnen aus papier, karton, kunststoffolie od. dgl
DE3219774A1 (de) * 1982-05-26 1983-12-01 Dr. Otto C. Strecker Kg, 6102 Pfungstadt Staubabsaugeinrichtung fuer laengsschneider

Also Published As

Publication number Publication date
ATE51569T1 (de) 1990-04-15
EP0183862A1 (fr) 1986-06-11
JPS61136798A (ja) 1986-06-24
DE3481828D1 (de) 1990-05-10
JPH044119B2 (fr) 1992-01-27

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