US3628409A - Device for cutting sheet material - Google Patents

Device for cutting sheet material Download PDF

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Publication number
US3628409A
US3628409A US3628409DA US3628409A US 3628409 A US3628409 A US 3628409A US 3628409D A US3628409D A US 3628409DA US 3628409 A US3628409 A US 3628409A
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US
United States
Prior art keywords
ridges
blunt
sharp
sheet
ridged
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
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English (en)
Inventor
Pierre Imbert
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.)
Societe Nationale dExploitation Industrielle des Tabacs et Allumettes SAS
Original Assignee
Societe Nationale dExploitation Industrielle des Tabacs et Allumettes SAS
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
Priority claimed from FR114728A external-priority patent/FR1540990A/fr
Priority claimed from FR115317A external-priority patent/FR1540996A/fr
Application filed by Societe Nationale dExploitation Industrielle des Tabacs et Allumettes SAS filed Critical Societe Nationale dExploitation Industrielle des Tabacs et Allumettes SAS
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Publication of US3628409A publication Critical patent/US3628409A/en
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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
    • 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
    • B26D1/01—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 does not travel with the work
    • B26D1/12—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 does not travel with the work having a cutting member moving about an axis
    • B26D1/14—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/22—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
    • B26D1/225—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller for thin material, e.g. for sheets, strips or the like
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B7/00—Cutting tobacco
    • A24B7/04—Cutting tobacco by machines with revolving knives
    • A24B7/06—Cutting tobacco by machines with revolving knives with two co-operating sets of knife discs
    • 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
    • B26D1/01—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 does not travel with the work
    • B26D1/12—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 does not travel with the work having a cutting member moving about an axis
    • B26D1/14—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—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 does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool
    • Y10T225/379—Breaking tool intermediate spaced work supports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/323—With means to stretch work temporarily
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/343—With means to deform work temporarily
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6592—Interrelated work-conveying and tool-moving means
    • Y10T83/6596—With means to effect difference between work speed and tool speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs

Definitions

  • ABSTRACT Apparatus for cutting sheet material into strips, including means for applying a drawing; force to a sheet of said [54] DEVICE FOR CUTTING SHEET M TE I material to cause said sheet to be drawn along and simultane- 12 Cl i 12 D i Fi ously causing restraining forces to be applied to said sheet on either side thereof to restraint it against the drawing action of [52] U.S. said drawing forces 83/175, ss ns, 83/429, 83/500, 225 97, 225/104- ma 05221 I871 SHEET 1 [1F DEVICE FOR CUTTING SHEET MATERIAL
  • the present invention relates to the conversion of sheet material into strips or pieces thereof.
  • the invention is notably applicable to the conversion of a continuous layer of material having a structure similar to that of paper (such as reconstituted tobacco) into thin strips or fragments thereof.
  • Certain known longitudinal cutting devices have the disadvantage of causing rapid wear of the cutting members, which operate against one another as they cut the material.
  • Such devices which operate uniquely by a transverse pull designed to cause longitudinal tearing, require a material capable of withstanding such forces. They produce a ragged cut without clean-cut edges and are unsuitable for industrial uses in which the strips must be relatively narrow (about one millimeter).
  • the sheet material is subjected to longitudinal stresses which cooperate with the shearing effect produced by the cutting member.
  • each strip is subjected to a longitudinal pulling force which snaps it when its length reaches a certain limit dependent on the cutting conditions.
  • the apparatus of this invention enables wavy strip fragments or strands to be obtained. This advantage is enhanced by the roof tiling effect obtained as a result of the configuration of the restraining means on either side of the cutting member.
  • This new product which has notable utility by reason of the improved bulk volume of the strands it ensures, likewise falls within the scope of the present invention.
  • It is a further object of the present invention to provide a device comprising two members of which at least one rotates, and which exhibit, on a plane passing through the rotation axis, a wavy profile formed by sharp ridges on one member and by blunt ridges on the other, the ridges of the one engaging between the ridges of the other (from which they are preferably spaced by an amount greater than the thickness of the sheet in order to avoid cutting thereof between the two members).
  • Said members have different linear speeds.
  • the member bearing the blunt ridges is mobile whereby to renew the restraining'surface in contact with the sheet material.
  • this mobile member is of the rotary variety, being consequently circular or with screw threads thereon whereby to provide more progressive operation by virtue of the arcs resulting from the sequence of circles described by said members.
  • the speed of the sharp-ridged member is greater in absolute terms than that of the other member in order to take advantage of the braking effect produced by the blunt ridges, which effect is necessarily greater than that which the sharp ridges would be able to produce.
  • the speed differential can be obtained by using different diameters.
  • the diameter of the sharp-ridged member is greater than that of the other member in order to obtain entrainment of the sheet by the ridges of the latter member before it is drawn into the zone of mesh.
  • a further advantage can be obtained by devising the blunt ridges so that they are rough only over part of their peripheries, thus making it possible to vary the friction of the sheet against the ridges and thereby create conditions favorable for waving the strips or strands.
  • the invention further provides for equipping the rotary cutting member with peripheral ribs such that when it is rotated said ribs revolve at different peripheral linear velocities in order to cause the sheet to advance faster at the points where it is gripped by the faster revolving ribs than at the points where it is gripped by the more slowly revolving ribs.
  • the fast-revolving ribs draw in a greater length of the band in a given space of time, thereby imparting an apparent arcing motion to the band.
  • At least one of the two rotating members of the device described precedingly can be frustoconical in shape, whereby the tangential velocities of the ribs thereon go increasing from the small end to the large end of the cone frustum.
  • the member with the sharp ridges is chosen as the rotating member so as to obtain the restraining effect with the ridges of the other member. If both members rotate, the one with sharp ridges preferably has a greater angular velocity than the other member.
  • FIG. I shows in front elevation a two-roll device formed with nonmeshing screw threads thereon.
  • FIG. 2 is a detail sectional view taken on the line IIII of FIG. 3 of the profile of the screw threads on the two rolls in FIG. 1.
  • FIG. 3 is a side elevation view of the device in FIG. 11.
  • FIGS. 4, 5 and 6 are views corresponding to FIGS. 1, 2 and 3, respectively, but in which the rolls are formed with circular grooves thereon, FIG. 5 being a sectional view on the line V- V of FIG. 6.
  • FIGS. 7 and 8 are views corresponding to FIGS. d and 5, respectively, but in which the rolls are formed by stacked discs.
  • FIGS. 9 and I0 are diagrammatic illustrations of the longitudinal stresses imposed upon the sheet material when performing the cutting method according to this: invention.
  • FIG. 11 is a schematic plan view of a frustoconical roll used in the device according to this invention.
  • FIG. 12 shows a strand obtained with the device of FIG. Ill, from a sheet of height h.
  • the device shown in FIGS. 1 to 3 comprises two rolls 1 and 2 rotating in opposite directions. These rolls have no direct point of contact between them; their angular rotation velocities are equal but opposite, the gearwheels 3 and 4 being identical. The rolls are here shown as being of different diameter.
  • Each of rolls 1 and 2 is formed on its periphery with a screw thread of appropriate profile.
  • the pitches of these two screw threads are strictly identical, one is a left-hand thread and the other a right-hand thread; thus contact can never take place between the two rolls providing they are correctly positioned initially, but only interpenetration of the threads, with the peaks of the one engaging into the middle of the hollows of the other.
  • the rolls are carried by two parallel shafts 5 and 6 interconnected by rigid supports 7 which are designed to enable the center distance 5-6 to be adjusted as required and to ensure optimum interpenetration of the two screw threads. Should the adjustment range prove narrow, the slight backlash between the two gearwheels 3 and 4 will allow the necessary adjustments to be made.
  • Screw thread 8 is formed on the roll of greater diameter, and its tapered ridge is designed to perform the function of a knife, as explained precedingly.
  • the screw thread 9 is formed on the roll of smaller diameter, and its ridge of trapezoidal (or rounded) shape acts as a backing element; it is used to tension the sheet 10 upon the ridges 8, to restrain the sheet by the friction between it and the flat tips of the trapezoidal screw threads, and to impart a profile to the cut strands such that they disengage better from the rolls.
  • the cutting width will be equal to the linear distance between two adjacent points 1 1.
  • the threads can be protected against wear, for instance by depositing a very hard metallic coating on all or part of one or the other thread, an example being by chromium-plating or by spraying tungsten carbide on one of the sides of the thread 8.
  • the device likewise includes two facing rolls 12 and 13, and the cutting process is similar to that described hereinabove with reference to FIGS. 1 to 3.
  • the rolls Instead of being formed with two threads over their peripheries, however, the rolls embody parallel circular grooves lying in cross-sectional planes of the rolls. These grooves are uniformly spaced at the same distance on both rolls.
  • roll 12 can rotate very fast while roll 13 rotates very slowly; it may be stationary or rotate in the opposite direction (at slow speeds).
  • shaft 14 is driven at high speed in the direction shown by the arrow, by any convenient means.
  • Shaft 15 is driven, separately or not, so as to rotate at any preselected speed, either in the same direction as shaft 14 or in the opposite direction.
  • shaft 15 can be left free (with roll 13 rotating freely), or be clamped by any convenient means (thus making roll 13 stationary).
  • the diameter of roll 13 can be greater than, equal to, or smaller than that of roll 12. At the limit, it may be infinite (implying a flat surface) in the case where roll 13 does not rotate. In practice, it is preferable for roll 13 to have a smaller diameter than roll 12 since this causes sheet 10 to be more readily absorbed" (see FIG. 6).
  • the profile of grooves 16 shown in FIG. is that formed on roll 12 and is such that the edges of the ridges are very sharp and the angle formed by the sides of the ridges is very acute.
  • Profile 17 is formed on roll 13; the ridge edges thereof are blunt, being rounded or trapezoidal, and are rough. The angle between the sides of these ridges is not very acute.
  • the two rolls 18 and 19 positioned face to face are no longer made of a single block of material but of a stack of bevelled discs. Though the discs are preferably, abutting, they may be separated by spacers if desired.
  • the outward appearance of the roll-forming cylinders is substantially identical to that of the grooved cylinders described hereinbefore.
  • the discs 20 (FIG. 8) form the roll 18 and their profile is similar to that of grooves 16 (FIG. 5).
  • Discs 21 form the roll 19 and their profile is similar to that of grooves 17 (FIG. 5).
  • Transverse cutting or prior shredding is no longer essential even if a continuous band of material to be transformed into strands. This arises from the fact that, because of the comparatively rough nature of the process and the high speeds reached, experience has shown that under certain conditions the cut strips will snap of their own accord into strands of variable length, their average length being dependent upon various factors and notably upon the gap between the rolls, the rotation speeds thereof, the profile of the screw threads, grooves, or interstices, the surface condition of the roll peripheries, the sharpness of the ridges, and the way the raw material is offered up.
  • FIG. 9 and 10 show the effect of the transverse snapping of the longitudinally cut strands or strips.
  • each ridge may comprise rough portions and less rough or even smooth portions, the latter being possibly formed as a flat area spread over the periphery of each ridge in order to periodically modify the restraining effect on the strip as well as the transverse tension therein.
  • FIGS. I to 3 may feature rolls formed with a plurality of screw threads; likewise, one of the roll shafts can be driven by the other through a gear train.
  • the roll I3 may be possessed of reciprocating motion (i.e., rotating first in one direction, then in the other).
  • the roll In the limit case of an infinite diameter, the roll is represented by a flat grooved surface possessed of rectilinear vibratory motion, the direction of the motion being longitudinally of the grooves, and such reciprocating motion can be imparted to both rolls.
  • a case in point would be a vibrating conveyor with blunt ridges cooperating with a sharp-ridged roll having its axis fixed to the moving surface of the conveyor.
  • the profiles of grooves 16 (FIG. 5) and 20 (FIG. 8) may be otherwise than symmetrical; more particularly, one flank of the outer portion may be straight, only the other being bevelled, as exemplified by the discs 20.
  • a roll consisting of a grooved cylinder may be associated to a roll formed by a stack of discs.
  • the subject device of this invention can be made to operate in any position whatsoever, notably with the rollsupporting shafts lying vertically or horizontally. Furthermore, such a device can be used in combination with others placed ahead so as to permit initial cutting or shredding into fragments of a continuous sheet wound to form a spool; in particular, such a device can be associated to a transverse cutting system or to a strip-delivering system, the link being of the conventional ver tical type, or horizontal as exemplified by a vibrating conveyor.
  • the frustoconical roll 31 rotates about an axis 32 and is formed with circular ridges 33 thereon (of which only one is shown) having a sharp-edged profile.
  • Cylindrical roll 35 rotates about an axis 38 and is formed with circular ribs 36 thereon (of which only one is shown) having a blunt-edged profile.
  • the ribs on rolls 3i and 33 interpenetrate in the same way as those of rolls I and 2 of FIGS. I and 2.
  • Rolls 3i and 35 rotate in opposite directions shown by the arrows in FIG. II.
  • Roll 31 rotates very fast whereas roll 33 rotates fairly slowly.
  • the band of material is offered up above the device in such manner that its lower edge is parallel to the rotation axis 33 of roll 35 and is entrained and gripped b the ribs 33 and 3b, with the former entraining 1t and the atter restraining it.
  • the band tends to position itself more and more obliquely in relation to rotation axis 33 because the linear velocity at 40 is much higher than at I11, thereby causing the precut band to be swallowed up" much more quickly on the side of the larger end than on the side of the smaller end of cone frustum 31.
  • roll 35 may be otherwise than cylindrical; in particular, a frustoconical shape would enable the restraining force to be adjusted to suit the entrainment speed of the ribs on roll 3I.
  • a device for cutting sheet material into strips comprising two members located to be situated on either side of the sheet to be cut to engage both sides thereof, one at least of said members is a rotary member of which longitudinal sections taken through the rotations axes thereof produce wavy profiles consisting of sharp ridges on one of said members and blunt ridges on the other, with the ridges of one member engaging between those of the other, the linear velocities of the ridges of said two members being different.
  • a device as in claim I wherein said blunt-ridged member is likewise a rotary member.
  • a device as in claim I, wherein said sharp-ridged member is a cylinder the peripheral linear velocity of which is algebraically greater than that of said blunt-ridged member.
  • a device as in claim I, wherein said sharp-ridged member is cylindrical and its diameter greater than that of said bluntridged member.
  • blunt-ridged member is likewise a rotary member and the angular velocity of the sharp-ridged member is greater than that of the other member.
  • flanks of said sharp ridges are smooth and at least one of the flanks of said blunt ridges is rough in part at least.

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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)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Paper (AREA)
US3628409D 1967-07-19 1968-07-15 Device for cutting sheet material Expired - Lifetime US3628409A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR114728A FR1540990A (fr) 1967-07-19 1967-07-19 Procédé et dispositif de découpe de matière en feuille et nouveau produit obtenu
FR115317A FR1540996A (fr) 1967-07-24 1967-07-24 Procédé et dispositif pour découper des brins non rectilignes

Publications (1)

Publication Number Publication Date
US3628409A true US3628409A (en) 1971-12-21

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ID=26178206

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Application Number Title Priority Date Filing Date
US3628409D Expired - Lifetime US3628409A (en) 1967-07-19 1968-07-15 Device for cutting sheet material

Country Status (7)

Country Link
US (1) US3628409A (nl)
BE (1) BE717824A (nl)
CH (1) CH477959A (nl)
DE (1) DE1782067A1 (nl)
GB (1) GB1237276A (nl)
NL (1) NL157785B (nl)
SE (1) SE345580B (nl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762568A (en) * 1970-08-07 1973-10-02 Dso Z M M Sofia Tool magazine
US4153664A (en) * 1976-07-30 1979-05-08 Sabee Reinhardt N Process for pattern drawing of webs
US4459888A (en) * 1979-12-03 1984-07-17 Beloit Corporation Non-contacting slitter
US6389942B1 (en) * 1997-03-31 2002-05-21 Sodick Co., Ltd. Wire cutter of wire-cut electrical discharge machine
EP1358941A1 (de) * 2002-05-02 2003-11-05 SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT Schneidwerkzeug für einen Dokumentenvernichter
EP4364877A1 (en) * 2022-11-07 2024-05-08 Contemporary Amperex Technology Co., Limited Electrode plate slitting cutter holder and electrode plate slitting machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048767A (en) * 1989-04-12 1991-09-17 Carl Manufacturing Co., Ltd. Cutter for shredder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333752A (en) * 1963-08-14 1967-08-01 Soc Civ D Rech Etudes Ind Apparatus for destroying documents

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333752A (en) * 1963-08-14 1967-08-01 Soc Civ D Rech Etudes Ind Apparatus for destroying documents

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762568A (en) * 1970-08-07 1973-10-02 Dso Z M M Sofia Tool magazine
US4153664A (en) * 1976-07-30 1979-05-08 Sabee Reinhardt N Process for pattern drawing of webs
US4459888A (en) * 1979-12-03 1984-07-17 Beloit Corporation Non-contacting slitter
US6389942B1 (en) * 1997-03-31 2002-05-21 Sodick Co., Ltd. Wire cutter of wire-cut electrical discharge machine
EP1358941A1 (de) * 2002-05-02 2003-11-05 SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT Schneidwerkzeug für einen Dokumentenvernichter
EP4364877A1 (en) * 2022-11-07 2024-05-08 Contemporary Amperex Technology Co., Limited Electrode plate slitting cutter holder and electrode plate slitting machine

Also Published As

Publication number Publication date
GB1237276A (en) 1971-06-30
SE345580B (nl) 1972-06-05
DE1782067A1 (de) 1972-02-24
CH477959A (fr) 1969-09-15
BE717824A (nl) 1968-12-16
NL157785B (nl) 1978-09-15
NL6810243A (nl) 1969-01-21

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