EP3848169A1 - Couteau perforant pourvu de surface de sertissage - Google Patents

Couteau perforant pourvu de surface de sertissage Download PDF

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Publication number
EP3848169A1
EP3848169A1 EP20216531.2A EP20216531A EP3848169A1 EP 3848169 A1 EP3848169 A1 EP 3848169A1 EP 20216531 A EP20216531 A EP 20216531A EP 3848169 A1 EP3848169 A1 EP 3848169A1
Authority
EP
European Patent Office
Prior art keywords
perforating
knife
crimping surface
tip
radius
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.)
Pending
Application number
EP20216531.2A
Other languages
German (de)
English (en)
Inventor
Hubert Schalk
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.)
Manroland Goss Web Systems GmbH
Original Assignee
Manroland Goss Web Systems GmbH
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 Manroland Goss Web Systems GmbH filed Critical Manroland Goss Web Systems GmbH
Publication of EP3848169A1 publication Critical patent/EP3848169A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the invention relates to a perforating knife for perforating at least one layer of a printing material to be processed into a printed product, the perforating knife having a plurality of perforating elements on the circumference, wherein a perforating element comprises at least one perforating tip which extends radially from an outer radius to at least one on one first radius lying base extends.
  • the invention also relates to a method for operating a perforating knife.
  • perforation devices which perforate the at least one layer of the printing material, which usually moves in one transport direction. If the printing material is perforated transversely to the transport direction, so-called transverse perforations are used for this purpose, in which the actual perforating knife has a sheet metal strip with at least one edge formed with a perforation toothing.
  • the perforating knife is usually designed as a circular knife which has perforating teeth on at least part of its circumferential surface.
  • This perforation toothing usually consists of pointed teeth which pierce the at least one layer of the printing material to be perforated.
  • the perforating knife which is mostly driven in rotation, interacts with a counter-knife which has either a groove or an at least partially relatively soft and elastic surface and serves as an abutment for the printing material to be perforated.
  • a large number of perforating knives are known from the prior art, which have a large number of pointed perforating teeth on at least part of their effective surface, in the case of circular knives this is the outer circumferential surface.
  • the perforation intensity can thus be varied via the penetration depth of the perforating teeth into the printing material to be perforated.
  • the invention is therefore based on the object of creating a solution with which the interlinking effect between the perforated layers of printing material can be improved.
  • the device according to the invention comprises a perforating knife, in which on at least one side of the perforating tip a crimping surface adjoins the base point of the perforating tip.
  • Such a perforating knife has the advantage that at least after perforation, i.e. after piercing the printing material layers through each perforating tip, through which a small bead arises in each printing material layer, which fix the individual printing material layers to one another, the overlying printing material layers with the crimping surface directly are pressed together again after the perforation process, which significantly increases the intensity of the linking.
  • a perforating knife according to the invention thus has a crimping surface after the perforating tip, viewed in the direction of rotation, which, viewed in the circumferential direction, has a limited extension, which is generally 2 to 10 mm. In this way, the area around a perforation hole can be pressed together again, so that the beads of the respective layers of printing material are linked or "felted" with one another even more intensively.
  • the crimping surface can have the contour of a circular arc which extends on a constant first radius concentrically to the center of the perforating knife. Thus, the area is evenly pressed together immediately after the perforation.
  • the intensity of the interlinking can be varied by changing the pressure between the perforating knife and the abutment.
  • At least one crimping surface has an inclination angle ⁇ to the circle spanned by the first radius, so that the crimping surface has an inclination towards a concentric circular arc.
  • Fig. 1 shows a perforating knife 1 according to the invention, which is designed as a circular knife.
  • a perforating knife 1 is used to perforate at least one layer of a printing material to be processed into a printed product, for this purpose the perforating knife 1 is received in a rotatably driven holder and is in operative connection with a rotating abutment (not shown).
  • the printing material to be perforated is supported by the rotating abutment, so that the perforating tips 3 can pierce and thus perforate the printing material to be perforated.
  • the perforating knife 1 shown is mostly made from sheet steel and has a thickness of usually 0.5 millimeters to usually a maximum of 2 millimeters and is usually produced by laser cutting and / or by grinding.
  • the perforating tips 3 can also be touched towards the plane of the drawing, but this is irrelevant for the present invention.
  • the perforating knife 1 can be hardened or tempered in its entirety, but it is also possible to harden or temper only the perforating tips 3 or the perforating tips 3 and the crimping surfaces 5.
  • the perforating knife 1 has a plurality of perforating elements 2 on the circumference. If a printing material or a preproduct made from it, which usually consists of several layers of printing material lying one above the other, is only to be perforated over a first partial length and not perforated over a second partial length, it is also possible, albeit in Fig. 1 not shown, that a perforating knife 1 has such perforating elements 2 only on one or more first subsections and has no perforating elements 2 on one or more second subsections.
  • the perforating knife 1 shown has a defined circular shape, the outer envelope being defined by a defined outer radius Ra.
  • the in Fig. 1 Perforating knife 1 shown has a defined direction of rotation 7 in order to ensure a particularly advantageous effect during operation.
  • the distance between the perforations is determined by the distance between the perforating elements 2 in the circumferential direction of the outer circle.
  • Fig. 2 shows the detailed view of the in Fig. 1 Area of a perforating element 2 shown as X on an enlarged scale.
  • Fig. 2 thus shows in enlarged form an exemplary embodiment of a perforating element 2, the in Fig. 2
  • the perforating element 2 shown comprises a perforating tip 3 with a base point 4 and an adjoining crimping surface 5, the crimping surface 5 being connected to the base point 4 of the perforating tip 3.
  • Fig. 2 shows by way of example only one configuration of a perforating element 2 with only one perforating tip 3 and one crimping surface 5, configurations with a plurality of perforating tips 3 and / or a plurality of crimping surfaces 5 are also possible.
  • Fig. 3 shows a further exemplary embodiment of a perforating element 2, as well as further details on the geometry of a perforating element 2.
  • the perforating tip 3 that is to say the part of the perforating element 2 which, in use, pierces the at least one printing material layer or preferably pierces and thus perforates all of the printing material layers to be perforated, extends radially from the outer radius Ra to a first one Radius R1 arranged base point 4.
  • the difference between the outer radius Ra and the first radius R1 thus defines the height of the perforating tip 3, which is usually in a range of approximately 1 millimeter to approximately 10 millimeters.
  • Fig. 3 The in Fig. 3 The example shown adjoins one side of the perforating tip 3, namely on the side of the perforating tip 3 facing away from the direction of rotation 7, a crimping surface 5 which directly adjoins the base point 4 of the perforating tip 3.
  • FIG. 3 shows an embodiment with only one crimping surface 5 adjoining the perforating tip 3, it is also possible for several crimping surfaces 5 to adjoin a perforating tip 3, as shown and described below.
  • Such a crimping surface 5 has an extension which is limited in the circumferential direction and which is generally approximately between 2 and 10 millimeters.
  • Fig. 3 shows an embodiment of a perforating element 2 in which the crimping surface 5 extends over the first radius R1, that is, the crimping surface 5 has the shape of a segment of a circle which is defined by the first radius R1, so that when the perforating knife 1 each crimping surface 5 can roll in a longitudinal perforating device with a corresponding setting depth on the printing material to be perforated, which is not shown, after the printing material has been pierced by the perforating tips 3.
  • the layers of printing material that are already interlinked or interlinked by the perforation can be pressed together again after being pierced through each crimping surface 5 and pressed against the abutment (not shown) required for the perforation process, thereby creating the interlinking effect, which in bookbinders is also known as "felting "is known, is significantly amplified.
  • the perforating tip 3 that is, the part of the perforating element 2 which in use pierces the at least one printing substrate layer or preferably pierces and thus perforates all the printing substrate layers to be perforated, extends radially from the outer radius Ra to one a first radius R1 arranged base point 4.
  • the difference between the outer radius Ra and the first radius R1 thus defines the height of the perforating tip 3, which in this variant is usually in a range from approximately 1 millimeter to approximately 10 millimeters.
  • Fig. 4 shows an embodiment with only one crimping surface 5 adjoining the perforating tip 3, it is also possible for several crimping surfaces 5 to adjoin a perforating tip 3, as shown and described below.
  • a crimping surface 5 has an extension which is limited in the circumferential direction and which is generally approximately between 2 and 10 millimeters.
  • Fig. 4 shows an alternative embodiment of a perforating element 2, in which the crimping surface 5 has an angle of inclination ⁇ to the circle 6 spanned by the first radius R1.
  • the angle of inclination ⁇ can also be defined between the tangent (not shown in the drawing) and the crimping surface, which is adjacent to the circle 6 at the base point 4 of the perforating tip 3.
  • the crimping surface 5 is thus not defined by the circle 6 defined by the first radius R1 or a circle segment contained therein, but rather has an inclination thereto.
  • the angle of inclination ⁇ used there is in a range from 1 ° to approximately 45 °, preferably in a range from 10 ° to 30 °.
  • the pressure and thus the crimping as well as the resulting interlocking or felting can be set finer by changing the position of the perforating knife 1 on the abutment.
  • the transition between the perforating tip 3 and the crimping surface 5 can be rounded, since this is advantageous both in terms of fatigue strength and in terms of production.
  • the radii used here are usually in a range from approximately 0.1 millimeters to approximately 5 millimeters.
  • each perforating element 2 has a perforating tip 3 on its leading side as seen in the direction of rotation 7, on which a crimping surface on the side opposite to the direction of rotation 7 or, in other words, on the side facing away from the direction of rotation 7 5 adjoins.
  • a perforating tip 3 on its leading side as seen in the direction of rotation 7, on which a crimping surface on the side opposite to the direction of rotation 7 or, in other words, on the side facing away from the direction of rotation 7 5 adjoins.
  • Such a configuration has the advantage that after perforation has taken place in the layers of printing material lying one on top of the other, they are crimped in the sense of being pressed together by the subsequent crimping surface 5, which is advantageous for linking the layers of printing material to one another.
  • Fig. 5 shows an exemplary embodiment of a perforating element 2 according to the invention, which is attached to each in the direction of rotation 7 (see Fig. 1 ) seen leading and trailing side of the perforating element 2 each have a perforating tip 3.
  • the perforating element 2 of the perforating knife 1 shown thus points in the direction of rotation 7 (see FIG Fig. 1 ) has a first perforating tip 3-1, a first crimping surface 5-1 adjoining it, a second crimping surface 5-2 and an adjoining second perforating tip 3-2 and is therefore independent of the direction of rotation.
  • Fig. 6 shows a further exemplary embodiment of a perforating element 2 according to the invention, which is attached to each in the direction of rotation 7 (see Fig. 1 ) seen leading and trailing side of the perforating element 2 each has a crimping surface 5.
  • the perforating element 2 of the perforating knife 1 shown thus points in the direction of rotation 7 (see FIG Fig. 1 ) seen a first crimping surface 5-1, an adjoining perforating tip 3 and an adjoining second crimping surface 5-2 and is thus also independent of the direction of rotation.
  • a depression is made in relation to the area of the crimping surface 5 with the largest radius, which corresponds to the first radius R1.
  • Such a depression has a width of approximately 0.1 millimeter to approximately one millimeter in the circumferential direction of the circle 6 described by the first radius R1, depending on the manufacturing process.
  • the crimping surface 5 thus still adjoins the respective adjacent perforating tip 3, although this may allow easier processing of the crimping surface 5 and / or the perforating tip 3.
  • the invention also encompasses a method of operating one as in FIG Figures 1 to 6 shown and described perforating knife 1, wherein the perforating knife 1 according to the invention is brought into operative connection with a grooved or with an elastic counter surface serving as an abutment for the printing material to be perforated, and wherein the distance between the perforating knife 1 and the counter surface serving as an abutment for the printing material can be changed.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP20216531.2A 2020-01-08 2020-12-22 Couteau perforant pourvu de surface de sertissage Pending EP3848169A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020100263.7A DE102020100263A1 (de) 2020-01-08 2020-01-08 Perforiermesser mit Crimpfläche

Publications (1)

Publication Number Publication Date
EP3848169A1 true EP3848169A1 (fr) 2021-07-14

Family

ID=74175576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20216531.2A Pending EP3848169A1 (fr) 2020-01-08 2020-12-22 Couteau perforant pourvu de surface de sertissage

Country Status (2)

Country Link
EP (1) EP3848169A1 (fr)
DE (1) DE102020100263A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE807622C (de) * 1950-03-09 1951-07-02 Ernst Alfred Tradel Vorrichtung zur Durchfuehrung der fadenlosen Heftung von Buechern u. dgl.
US4166613A (en) * 1976-10-13 1979-09-04 Maschinenbau Oppenweiler Gmbh Mechanism for chip-cutting and chip-ejection in the perforation of signatures
EP0197190A2 (fr) * 1985-01-28 1986-10-15 Vittorio Vigano Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE649942C (de) * 1937-09-07 Heinrich Wilhelm Casack Messerstock zum Stanzen von Faltschachteln
DE8225381U1 (de) * 1982-09-09 1983-06-09 Fischer, Kurt, 7615 Zell Stanzwerkzeug fuer sternfoermige schnitte
DE29922281U1 (de) * 1999-12-20 2001-04-26 Essmann + Schaefer GmbH + Co. KG, 42369 Wuppertal Schneid- und Ritzwerkzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE807622C (de) * 1950-03-09 1951-07-02 Ernst Alfred Tradel Vorrichtung zur Durchfuehrung der fadenlosen Heftung von Buechern u. dgl.
US4166613A (en) * 1976-10-13 1979-09-04 Maschinenbau Oppenweiler Gmbh Mechanism for chip-cutting and chip-ejection in the perforation of signatures
EP0197190A2 (fr) * 1985-01-28 1986-10-15 Vittorio Vigano Perforeuse de feuilles ou de bandes de papier le long des lignes pliées de celles-ci

Also Published As

Publication number Publication date
DE102020100263A1 (de) 2021-07-08

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