EP2095917B1 - Papierschneidemechanismus für Gewebe mit Oberschneide mit variablem Spiralkurvenwinkel sowie Oberschneidenstruktur dafür - Google Patents

Papierschneidemechanismus für Gewebe mit Oberschneide mit variablem Spiralkurvenwinkel sowie Oberschneidenstruktur dafür Download PDF

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Publication number
EP2095917B1
EP2095917B1 EP08003555A EP08003555A EP2095917B1 EP 2095917 B1 EP2095917 B1 EP 2095917B1 EP 08003555 A EP08003555 A EP 08003555A EP 08003555 A EP08003555 A EP 08003555A EP 2095917 B1 EP2095917 B1 EP 2095917B1
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EP
European Patent Office
Prior art keywords
knife
bed
roller
upper knife
tissue paper
Prior art date
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Active
Application number
EP08003555A
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English (en)
French (fr)
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EP2095917A1 (de
Inventor
Tung-I Tsai
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.)
Chan Li Machinery Co Ltd
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Chan Li Machinery Co Ltd
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Priority to EP08003555A priority Critical patent/EP2095917B1/de
Priority to PL08003555T priority patent/PL2095917T3/pl
Publication of EP2095917A1 publication Critical patent/EP2095917A1/de
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    • 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
    • B26D1/56—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—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 involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2692—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member the rollers or cylinders being mounted skewed

Definitions

  • the present invention relates to a knife carrier of a cutting machine, and more particularly to an upper knife with variable spiral curve angle as well as a tissue paper cutting mechanism using such upper knife.
  • a long tape of tissue paper fed into and conveyed through the tissue paper cutting mechanism is cut by the upper knife and a cooperating bed knife roller into regular length paper pieces, which are then overlapped and folded to produce a stack of interfolded paper.
  • tissue paper cutting mechanisms In the existing tissue paper cutting techniques, a cutting manner based on the shearing principle by using an upper knife and a corresponding bed knife roller has been widely employed.
  • Most currently very common tissue paper cutting mechanisms include a one-piece oblique knife, a compound oblique knife, or a simple spiral curve knife as the upper knife thereof.
  • they When cutting paper with these types of knives, they either bear an uneven contact force or contact with the bed knife roller at multiple contact points at the same time.
  • not only the upper knife, but also a knife carrier thereof and the bed knife roller would bear a relatively large or uneven impact at the instant of contact to become deformed or damaged and therefore have a largely reduced usable life.
  • US 3,190,193 discloses a flexible blade adapted to coact with an angularly-disposed anvil blade wherein the flexibly blade comprises a body which has the general shape of an elongated rectangular solid and defining thereby two oppositely-disposed narrow elongated faces and two oppositely-disposed wide elongated planar faces and wherein at least one of the narrow faces has a concave contour to provide an elongated, longlitudinally tapered recess portion extending substantially along the length of said one face and having the tapered recess apex centrally of the length of said one face, the said face also being equipped with longlitudinally spaced-apart notches, and a web perforating apparatus comprising such a flexible blade and anvil blade.
  • the prior art DE3718776 discloses a synchronization cross cutters with two oppositely rotated, axially parallel cutting rotors that support cooperating, helically extending knife blades with cutting edges situated in a cylindrical envelope.
  • the axes of these cutting edges run at an angle, corresponding to the inclination of the helix, with respect to the direction of advancement of the material web being cut
  • the axial distance of the cutting rotors from the material web is variable and the knives are mounted on a flat blade holder that runs substantially tangentially in the rotor cross section and is slightly flexible.
  • the knife blade holder supported by a series of individually adjustable supporting elements, can be given a slight flexure with a radial adjustment, so as to assure that the position of the cutting edge of the knife remains within in the cylindrical envelope.
  • the supporting elements consist of supporting shanks which can be clamped in a beam-like hub body of the cutting rotor and which alternate with screw spindles that form the adjusting means.
  • the European Patent Application EP-A-0122996 discloses a rotary web shearing machine equipped with pairs of rotating helical blades, the improvement for adjusting the clearance between the blades which makes it unnecessary to adjust the blades by their individual holders while the machine is stationary, but makes it possible to effect this adjustment without shutting down the machine. This is accomplished either by providing that one of the blades remains in a fixed axial position, while the companion cutting blade holding shaft is moved axially with respect to the fixed blade.
  • Fig. 1 schematically shows the motion relation between a compound oblique upper knife N1 and a straight bed knife N2. As shown, the oblique upper knife N1 contacts with the straight bed knife N2 at multiple contact points at the instant of cutting, and the upper knife is subjected to relatively large impact and vibration.
  • FIG. 2 schematically shows the motion relation between a one-piece oblique or a simple spiral upper knife N3 and a straight bed knife N4.
  • a one-piece oblique or a simple spiral upper knife N3 and a straight bed knife N4.
  • the oblique upper knife N3 contact with the straight bed knife N4 at only one contact point at the instant of cutting, the oblique upper knife N3 is fed at a relatively quick speed and is still subjected to a relatively large impact and vibration.
  • the upper knife with variable spiral curve angle is associated with a structural surface of a knife carrier thereof in such as manner that, in the process of cutting the tissue paper, an angle contained between an axis of the upper knife and a tangential line to an outer circumferential surface of a bed knife roller cooperating with the upper knife non-linearly varies with every change of the cutting position on the upper knife.
  • Another object of the present invention is to provide an upper knife structure with variable spiral curve angle for a tissue paper cutting mechanism.
  • the upper knife is associated with a structural surface of a knife carrier thereof to extend along a longitudinal axis of the knife carrier from an end to the other opposite end thereof in a spiral direction.
  • the upper knife with variable spiral curve angle of the present invention is in point contact with the straight bed knife on a bed knife roller at only one contact point at the instant of cutting, and a curvilinear angle between the upper knife and the straight bed knife on the bed knife roller non-linearly varies with every change of cutting position on the upper knife.
  • the upper knife and the straight bed knives on the bed knife roller are always in stable point contact with one another, enabling the knives to have a prolonged usable life.
  • the angle contained between the axis of the upper knife and the tangential line to the outer circumferential surface of the bed knife roller non-linearly varies with every change of the cutting position on the upper knife.
  • deformation amounts at two end points and a middle point of the upper knife will gradually become closer to one another, and the upper knife is protected against damage due to a particularly high deformation amount at a certain point that bears a force. Therefore, the upper knife may have a prolonged service life to allow increased production efficiency.
  • a cutting speed at the beginning of cutting is particularly reduced to effectively soften the impact at the instant of cutting and reduce the vibration of the knife.
  • a tissue paper cutting mechanism having upper knife with variable spiral curve angle.
  • the tissue paper cutting mechanism comprises a base, a bed knife roller rotatably mounted on the base and provided on a circumferential surface with a plurality of straight bed knives radially spaced at predetermined intervals, a knife carrier mounted on the base near the bed knife roller at an axis skew angle relative to the bed knife roller, and an upper knife associated with a structural surface of the knife carrier to extend along a longitudinal axis direction of the knife carrier from an end to another opposite end thereof in a spiral direction, such that an angle contained between an axis of the upper knife and a tangential line to the circumferential surface of the bed knife roller non-linearly varies with every change of the cutting position on the upper knife.
  • the tissue paper cutting mechanism of the present invention includes a base 1, on which a first and a second cutting mechanism 100, 200 are laterally symmetrically arranged.
  • Two long tapes of tissue paper S1, S2 having a predetermined width are separately fed to the two cutting mechanisms 100, 200, and are conveyed through, cut, pressed to form folds, picked, overlapped, and folded to produce a stack of interfolded paper S.
  • the first cutting mechanism 100 includes a plurality of idlers 2, a bed knife roller 3, a knife carrier 4, an upper knife 5, a fold-forming roller 6, a packer finger 7, and a pneumatic control device 8.
  • the bed knife roller 3 is provided on an outer circumferential surface with a plurality of straight bed knives 32 radially spaced at predetermined intervals.
  • the bed knife roller 3 has a roller shaft 31 for rotatably mounting the bed knife roller 3 to a predetermined position on the base 1.
  • the knife carrier 4 includes a carrier shaft 41 for mounting the knife carrier 4 on the base 1 at a position in the vicinity of the bed knife roller 3.
  • the long tape of tissue paper S1 is fed through the idlers 2 of the first cutting mechanism 100 and conveyed to the bed knife roller 3, which is rotated in a predetermined rotating direction. At this point, a shear contact is formed between the upper knife 5 and one of the straight bed knives 32 on the bed knife roller 3 to cut the long tape of tissue paper S1 to a regular length paper piece S11, which is then conveyed to the fold-forming roller 6.
  • the second cutting mechanism 200 includes a plurality of idlers 2a, a bed knife roller 3a, a knife carrier 4a, an upper knife 5a, a fold-forming roller 6a, a packer finger 7a, and a pneumatic control device 8a.
  • the bed knife roller 3a is provided on an outer circumferential surface with a plurality of straight bed knives 32a radially spaced at predetermined intervals.
  • the bed knife roller 3a has a roller shaft 31a for rotatably mounting the bed knife roller 3a to a predetermined position on the base 1.
  • the knife carrier 4a includes a carrier shaft 41a for mounting the knife carrier 4a on the base 1 at a position in the vicinity of the bed knife roller 3a.
  • the long tape of tissue paper S2 is fed through the idlers 2a of the second cutting mechanism 200 and conveyed to the bed knife roller 3a, which is rotated in a predetermined rotating direction. At this point, a shear contact is formed between the upper knife 5a and one of the straight bed knives 32a on the bed knife roller 3a to cut the long tape of tissue paper S2 to a regular length paper piece S21, which is then conveyed to the fold-forming roller 6a.
  • the fold-forming rollers 6, 6a are provided on respective circumferential surface with fold-forming means to form folds on the paper pieces S11, S21 conveyed to the fold-forming rollers 6, 6a.
  • the paper pieces S11, S21 with folds are then picked and pressed by the packer fingers 7, 7a, so as to be overlapped and folded along the folds to form a stack of interfolded paper S.
  • the bed knife rollers 3, 3a and the fold-forming rollers 6, 6a are independently connected to a conventional suction unit (not shown), and have a plurality of air holes provided on the circumferential surfaces thereof. Through controlling the suction units, the long tapes of tissue paper S1, S2 and the paper pieces S11, S21 may be sucked to or released from the circumferential surfaces of the bed knife rollers 3, 3a and the fold-forming rollers 6, 6a, respectively.
  • the pneumatic control device 8 includes an air cylinder 81 and an extension arm 82 movably connected to the knife carrier 4.
  • the pneumatic control device 8a includes an air cylinder 81a and an extension arm 82a movably connected to the knife carrier 4a.
  • the air cylinder 81, 81a is actuated to extend or retract the extension arm 82, 82a, so as to control the knife carrier 4, 4a to turn by a predetermined angle, allowing the upper knife 5, 5a to move away from the corresponding straight bed knife 32, 32a on the bed knife roller 3, 3a to a distant position, so that an operator may introduce a new long tape of tissue paper S1, S2 into the cutting mechanism 100, 200 for use.
  • the air cylinder 81, 81a may be actuated again to control the extension arm 82, 82a to turn the knife carrier 4, 4a back to an initial cutting position. That is, the knife carrier 4, 4a is approached toward the bed knife roller 3, 3a to continue the production of the interfolded paper S.
  • Figs. 4 and 5 are front and end views, respectively, showing the arrangement of the upper knife 5 on the knife carrier 4 in the present invention.
  • the knife carrier 4 includes a knife holder 42, to which the upper knife 5 fixedly held.
  • the knife holder 42 is formed on a structural surface 43 of the knife carrier 4 to extend along a longitudinal axis direction 11 of the knife carrier 4 from an end 40a to another opposite end 40b thereof in a spiral direction.
  • the upper knife 5 is held to the knife holder 42, and is therefore located on the structural surface 43 of the knife carrier 4 to extend along the longitudinal axis direction I1 of the knife carrier 4 from the end 40a to the opposite end 40b thereof in a spiral direction.
  • the knife carrier 4 is also provided at predetermined positions with a knife projecting length adjusting unit 44 for adjusting the length by which the upper knife 5 is projected from the knife holder 42, a knife clamping adjusting unit 45 for adjusting the tightness by which the upper knife 5 is held to the knife holder 42, and a knife curvature adjusting unit 46 for adjusting a curvature of the upper knife 5.
  • Fig. 6 is a perspective view showing the mounting position of the knife carrier 4 relative to the bed knife roller 3 in the present invention. As shown, the bed knife roller 3 may be rotated in a rotating direction 12, and an axis skew angle ⁇ x is contained between the knife carrier 4 and the bed knife roller 3.
  • Fig. 7 is a developed plan view showing the motion relation between the upper knife 5 and the straight bed knife 32 on the bed knife roller 3 in the present invention.
  • the upper knife 5 is always in point contact with the straight bed knife 32 at only one single point, and a curvilinear angle between the upper knife and the straight bed knife on the bed knife roller non-linearly varies with every change of cutting position on the upper knife.
  • the upper knife and the straight bed knives on the bed knife roller are always in stable point contact with one another, enabling the knives to have a prolonged usable life.
  • a cutting speed at the beginning of cutting is particularly reduced to effectively reduce the vibration of the knife.
  • Fig. 8 is a curve diagram showing and comparing the cutting . characteristics of some other commonly employed upper knives and the upper knife 5 of the present invention.
  • the abscissa indicates cutting time in second (sec)
  • the ordinate indicates a transverse length of the upper knife in millimeter (mm).
  • the curve X1 in the diagram represents a conventional compound oblique upper knife is in contact with the straight bed knife at multiple points at the instant of cutting, and the cutting time thereof is very short, indicating that the knife must be bearing a relatively large impact and subjected to vibration at the instant of cutting.
  • the curve X2 in the diagram represents a conventional one-piece oblique upper knife is in contact with the straight bed knife at only one single point at the instant of cutting, and the cutting time is still relatively short, indicating the knife is still fed at a relatively high speed, and accordingly, still subjected to a relatively large impact and vibration.
  • the curve X3 represents the cutting characteristics of a simple spiral type upper knife. As can be seen from the curve X3 in the curve diagram of Fig. 8 . a cutting time T1 for the cutting from a beginning point A to a middle point B of the upper knife is almost equal to a cutting time T2 for the cutting from the middle point B to an end point C of the upper knife, indicating that the cutting is conducted at a fixed speed.
  • the curve X4 represents the cutting characteristics of the upper knife 5 of the present invention.
  • the cutting time T1 for the cutting from the beginning point A to the middle point B of the upper knife 5 is far longer than the cutting time T2 for the cutting from the middle point B to the end point C of the upper knife 5, indicating that, in the present invention, the cutting speed at the beginning of cutting is particularly reduced, so as to effectively soften an instantaneous impact to the upper knife at the beginning of cutting and reduce the vibration of the upper knife. In this manner, the knife may have reduced loss to increase the service life thereof.
  • Fig. 9 is a perspective view showing the upper knife 5 initially contacts at a beginning point A with the straight bed knife 32 on the bed knife roller 3 to start cutting.
  • Fig. 10 is a sectional view showing a contained angle ⁇ 1 between an axis of the upper knife 5 and a tangential line to the outer circumferential surface of the bed knife roller 3 when the upper knife 5 initially contacts at the point A with the straight bed knife 32 on the bed knife roller 3 as shown in Fig. 9 .
  • Fig. 11 is a perspective view showing the cutting performed by the upper knife 5 and the straight knife 32 on the bed knife roller 3 has been progressed to a middle position of the upper knife 5 indicated as point B.
  • Fig. 10 is a sectional view showing a contained angle ⁇ 1 between an axis of the upper knife 5 and a tangential line to the outer circumferential surface of the bed knife roller 3 when the upper knife 5 initially contacts at the point A with the straight bed knife 32 on the bed knife roller 3 as shown in Fig. 9 .
  • FIG. 12 is a sectional view showing a contained angle ⁇ 2 between the axis of the upper knife 5 and a tangential line to the outer circumferential surface of the bed knife roller 3 when the upper knife 5 contacts at the middle point B with the straight bed knife 32 on the bed knife roller 3 as shown in Fig. 11 .
  • Fig. 13 is a perspective view showing the cutting performed by the upper knife 5 and the straight knife 32 on the bed knife roller 3 has been progressed to an end position of the upper knife 5 indicated as point C. And, Fig.
  • FIG. 14 is a sectional view showing a contained angle ⁇ 3 between the axis of the upper knife 5 and a tangential line to the outer circumferential surface of the bed knife roller 3 when the upper knife 5 contacts at the end point C with the straight bed knife 32 on the bed knife roller 3 as shown in Fig. 13 .
  • Fig. 15 is a simplified view showing changes in the contained angle ⁇ between the axis 13 of the upper knife 5 and the tangential line 14 to the outer circumferential surface of the bed knife roller 3. As shown, with every change of the cutting position on the upper knife 5, the contained angle ⁇ periodically non-linearly varies from ⁇ 1 to ⁇ 2 and then from ⁇ 2 to ⁇ 3, and the variation thereof is represented as ⁇ .
  • Figs. 16 and 17 are front and side views, respectively, describing the deformed condition of the upper knife 5 when it is in use.
  • Figs. 18, 19 , and 20 are curve diagrams showing the deformation amounts of the upper knife 5 at different points A, B, and C thereof.
  • Fig. 18 indicates the upper knife 5 fixed to the knife carrier 4 normally has two outer end points A and C with a somewhat weak strength; and when the upper knife 5 bears a force at the two end points A and C, the deformation amounts at points A. C are larger than the deformation amount at a middle point B when the upper knife 5 bears a force at the point B.
  • the amounts of deformation are shown by broken lines. Please refer to Figs. 16 and 18 at the same time.
  • the broken lines at the two end points A and C are longer, compared to the broken line at the middle point B, indicating the amounts of deformation at these two end points A, C are relatively large.
  • ⁇ Y1 is a difference between the deformation amounts at the two end points A and C and the deformation amount at the middle point B.
  • Fig. 19 indicates the contained angle between the axis I3 of the upper knife 5 and the tangential line 14 to the outer circumferential surface of the bed knife roller 3 varies with change in the cutting position on the upper knife 5. From the principle of mechanics, the larger the contained angle ⁇ is, the smaller an effective component of the bearing force is, and accordingly, the smaller the deformation amount of the knife is.
  • the contained angles ⁇ 1 and ⁇ 3 at the end points A and C, respectively are larger than the contained angle ⁇ 2 at the middle point B.
  • Fig. 20 is a curve diagram showing a total effect from Figs. 18 and 19
  • ⁇ Y2 is a difference between the deformation amounts at the two end points A and C and the deformation amount at the middle point B.
  • ⁇ Y2 ⁇ Y1 indicating that when the angle of the spiral curve of the upper knife 5 is adjusted according to the present invention, the deformation amounts at the two end points A, C and the deformation amount at the middle point B get closer to one another. In this manner, it is possible to protect the upper knife against damage due to a particularly high deformation amount at a certain point that bears a force. Therefore, the knife may have a prolonged service life.

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

Claims (5)

  1. Mechanische Vorrichtung (100, 200) zum Querteilen einer langen Seidenpapierbahn (S1, S2) unter Herstellung einer Vielzahl von Papierabschnitten von regelmäßiger Länge, umfassend :
    einen Unterbau (1);
    eine Messerbettwalze (3, 3a) einschließlich einer Walzenwelle (31, 31a) zur Montage der Messerbettwalze (3) am Unterbau (1), so dass die Messerbettwalze (3) in einer vorgegebenen Laufrichtung drehbar ist; und eine Umfangsfläche mit einer Vielzahl von geraden Bettmessern (32), die in vorgegebenen Abständen radial über die Flache verteilt sind; und
    einen Messerträger (4, 4a) einschließlich von einer Trägerwelle (41, 41 a) zur Montage des Messerträgers (4, 4a) am Unterbau (1) in einer Lage in der Nähe der Messerbettwalze (3, 3a), so dass ein axial zwischen dem Messerträger (4, 4a) und der Messerbettwalze (3, 3a) eingeschlossener schräger Winkel gebildet wird;
    dadurch gekennzeichnet, dass:
    ein Obermesser (5, 5a) so zu eine strukturierten Oberfläche des Messerträgers (4, 4a) eingestellt ist, dass es entlang der Richtung einer Längsachse des Messerträgers (4, 4a) spiralförmig von einem Ende (40a) zu einem anderen, gegenüberliegenden Ende (40b) desselben verläuft, so dass es einen sich ändernden Spiralkurvenwinkel aufweist;
    wobei während der Zustellung der langen Seidenpapierbahn (S1, S2) zum, und Durchlauf durch den Messerträger (4, 4a) und die Messerbettwalze (3, 3a) ein Scherkontakt zwischen dem Obermesser (5, 5a) und den geraden Bettmessern (32, 32a) auf der Messerbettwalze (3, 3a) hergestellt wird, so dass das Seidenpapier (S1, S2) geschnitten wird und sich ein zwischen der Achse des Obermessers (5, 5a) und einer Tangente der Umfangsfläche der Messerbettwalze (3, 3a) gebildete Winkel mit jeder Änderung der Schneidposition des Obermessers (5, 5a) ändert und deshalb in Längsrichtung nicht variabel ist, so dass die durchlaufende Seidenpapierbahn (S1, S2) in Papierabschnitte (S11, S21) von gleichmäßiger Länge quergeteilt wird.
  2. Vorrichtung (100, 200) zum Schneiden von Seidenpapier für das Querteilen einer Seidenpapierbahn gemäß Anspruch 1, umfassend des Weiteren eine Vielzahl von Laufrollen (2, 2a) zur Zustellung der langen Seidenpapierbahn (S1, S2) und ihrer Führung durch das Obermesser (5, 5a) und die Messerbettwalze (3, 3a).
  3. Vorrichtung (100, 200) zum Schneiden von Seidenpapier gemäß Anspruch 1, umfassend des Weiteren eine in einer Lage in der Nähe der Walzenbettwalze (3, 3a) angeordnete Falzwalze (6, 6a) für das Falzen der Papierabsohnitte (S11, S12) von gleichmäßiger Länge.
  4. Vorrichtung (100, 200) gemäß Anspruch 1, umfassend des Weiteren eine pneumatische, einen Luftzylinder (81, 81a) und einen mit dem Messerträger (4, 4a) verbundenen Verlängerungsarm (82, 82a) aufweisende Steuervorrichtung (8,8a); der Verlängerungsarm (82, 82a) wird durch die pneumatische Steuervorrichtung (8, 8a) so gesteuert, dass er zur Steuerung des Obermessers (5, 5a) ausgestellt oder eingezogen wird und damit das Obermesser (5, 5a) so steuert, dass es sich von einem entsprechenden der geraden Bettmesser (32) auf der Messerbettwalze (3, 3a) weg in eine vorgegebene, entfernte Lage oder sich auf die Messerbettwalze (3, 3a) zu bewegt.
  5. Vorrichtung (100, 200) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Messerträger (4, 4a) eine Einstellvorrichtung (44) zur Justierung einer aus dem Messerträger (4, 4a) hervorstehenden Länge des Obermessers (5, 5a), eine Einstellvorrichtung (46) zur Justierung der Kraft, mit der das Obermesser (5, 5a) im Messerträger (4, 4a) eingespannt ist, sowie eine Einstellvorrichtung (45) für die Messerkrümmung aufweist, mit der die Krümmung des Obermessers (5, 5a) justiert wird.
EP08003555A 2008-02-27 2008-02-27 Papierschneidemechanismus für Gewebe mit Oberschneide mit variablem Spiralkurvenwinkel sowie Oberschneidenstruktur dafür Active EP2095917B1 (de)

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Application Number Priority Date Filing Date Title
EP08003555A EP2095917B1 (de) 2008-02-27 2008-02-27 Papierschneidemechanismus für Gewebe mit Oberschneide mit variablem Spiralkurvenwinkel sowie Oberschneidenstruktur dafür
PL08003555T PL2095917T3 (pl) 2008-02-27 2008-02-27 Tnący mechanizm do bibułek, o górnym nożu ze zmiennym kątem krzywej spiralnej i struktura górnego noża do tego celu

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EP08003555A EP2095917B1 (de) 2008-02-27 2008-02-27 Papierschneidemechanismus für Gewebe mit Oberschneide mit variablem Spiralkurvenwinkel sowie Oberschneidenstruktur dafür

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EP2095917A1 EP2095917A1 (de) 2009-09-02
EP2095917B1 true EP2095917B1 (de) 2012-06-20

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DE102017110231B4 (de) * 2017-05-11 2019-09-26 Heusch Gmbh & Co. Kg Schneidvorrichtung sowie Verfahren zu deren Betrieb
CN110142980B (zh) * 2018-12-26 2024-04-12 湖北工业大学 一种平面口罩主动切片方法及装置

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DE3718776C1 (de) * 1987-06-04 1988-08-25 Strecker Valmet Rotations-Gleichlaufquerschneider

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