EP0555190A2 - Verfahren und Vorrichtung zum Schneiden von Papierrollen oder dergleichen - Google Patents

Verfahren und Vorrichtung zum Schneiden von Papierrollen oder dergleichen Download PDF

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Publication number
EP0555190A2
EP0555190A2 EP93830042A EP93830042A EP0555190A2 EP 0555190 A2 EP0555190 A2 EP 0555190A2 EP 93830042 A EP93830042 A EP 93830042A EP 93830042 A EP93830042 A EP 93830042A EP 0555190 A2 EP0555190 A2 EP 0555190A2
Authority
EP
European Patent Office
Prior art keywords
blade
rotor
logs
cutting machine
machine according
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.)
Withdrawn
Application number
EP93830042A
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English (en)
French (fr)
Other versions
EP0555190A3 (en
Inventor
Guglielmo Biagiotti
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.)
Fabio Perini SpA
Original Assignee
Fabio Perini SpA
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 Fabio Perini SpA filed Critical Fabio Perini SpA
Publication of EP0555190A2 publication Critical patent/EP0555190A2/de
Publication of EP0555190A3 publication Critical patent/EP0555190A3/en
Withdrawn legal-status Critical Current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
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening 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
    • 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
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/04—Means for holding or positioning work with clamping means providing adjustable clamping pressure
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • 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
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • 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
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/11—Machines or methods used for cutting special materials for cutting web rolls

Definitions

  • the most widespread cutting machines for the formation of small rolls of paper - of the type including toilet paper, all-purpose wipers and other- are provided with a discoidal, high-speed rotating blade.
  • the axis of rotation of the blade is in turn provided with a motion which may be either a reciprocating motion in a direction perpendicular to the log feeding motion, or it may rotate about an axis parallel to the log feeding motion.
  • a motion which may be either a reciprocating motion in a direction perpendicular to the log feeding motion, or it may rotate about an axis parallel to the log feeding motion.
  • Whatever the type of the blade axis motion it has the purpose of moving the blade in and out of the product to be cut, so that when the blade is clear of the product to be cut, the latter is able to advance to an extent corresponding to the desired length to which the small roll is to be cut.
  • the frequency of the cyclic movements of both the cutting element and the product feeding systems which is equal to the production rate of the small rolls, gives rise to obvious qualitative
  • the cutting machine of the present invention which is provided for cutting small rolls of toilet-paper or the like from rolls or logs of considerable length, said machine comprising sliding seats or carriers and means for feeding one or more logs to be cut, and a rotor with a blade.
  • the blade has a helicoidal conical shape with external cutting edge having radii which change over a portion of a revolution (or even a complete revolution). The difference between the maximum and minimum radii of the cutting edge is at least equal to the maximum diameter of the rolls or logs to be cut.
  • the rotating shaft and the blade rotor are not displaced during the rotor's revolution, and are slightly inclined with respect to the direction of sliding of the logs in their seats or carriers.
  • the cut performed on the logs by the cutting edge of the cutting blade will, on the average, be perpendicular to the axes of the logs.
  • the advancement of the log(s) (B) in the carriers is continuous and the cutting takes place during a portion of a revolution of the rotor and during that portion of the log's advancement which corresponds to the axial length of the small rolls to be produced.
  • the blade sharpening means may comprise a cyclically movable unit (i.e. movable upon every revolution of the blade rotor) which moves both radially and axially with respect to said blade.
  • the system for the advancement of the grinding wheels towards the blade may be obtained in two different ways: either moving the carriage of the grinding wheels towards the rotor axis, or moving the blade within its seat towards the grinding wheels.
  • the present cutting machine includes (similarly to the traditional cutting machines) two-part clamps which grip the logs and which are located both upstream and downstream of the cutting area. Said clamps elastically exert a constant, adjustable and not necessarily high pressure onto the material of each log in order to cause a continuous forward advancement of the log.
  • the clamps in this case, are only intended to grip the roll or log during the cutting action so as to counteract the transverse thrust caused by the blade.
  • the machine Owing to the successive sharpenings, the blade dimensions are reduced. To compensate forthis wear and to ensure the complete cutting of rolls or logs, the machine is provided with a system allowing the blade and rotor axis to move close to the sliding cradles of the rolls or logs.
  • numeral 1 indicates the cutting area of a log-saw with a structure (3) attached thereto for holding the cradles or seats which slidingly carry the logs to be cut.
  • the cradles in this case are three, designated 4, 4A and 4C, but there may be more or less, as desired.
  • Acting along said seats are chain pushers or any other type of pushers provided with a continuous flexible member, which include thrust elements (5) engaged along chains (7) driven between chain wheels (9) and (11) (or pulleys for a toothed chain) so as to cause the pushers (5) to slide along cradles such as those indicated by (4), (4A), (4C).
  • a sleeve (14) Mounted on the housing (with ball bearings, not shown) is a sleeve (14) whose axis is slightly inclined with respect to the roll feeding direction defined by the sliding cradles. This sleeve lies in a plane which is parallel to the plane in which the two other sliding cradles (4 and 4C) lie. Cradles (4) and (4C) are arranged slightly higher than the sliding cradle (4A). Supported within sleeve (14) is a main shaft (15).
  • a belt drive (20) connects the motor (18) to the shaft (15).
  • the unit (16), oscillating around the common axis of sleeve (14) and shaft (15), is supported (on the side opposite the sleeve 14) by a rod (30) which is pivoted at (32) to the unit (16) and at (34) to a bracket (36) fixed to the main frame (1).
  • Said rod (30) can be moved up and down by a screw-and-nut system operated by a motor-reducer (38) suitably calibrated for determining the angular displacement of the unit (16) to accommodate the extent of wear of the cutting blade, to be described later.
  • a belt (40) connected to shaft (15) turns a rotor (42) whose hub (44) and extension (45) rotate about an axis concentric to that of shaft (15). It is carried by the unit (16) in a position between the pivot-point on the sleeve (14) and the pivot-point (32) of the rod (30). Attached to the flange of the hub (44) is a disk (46) at the periphery of which an annular ring (48) is engaged having a particular shape with a flange-like shoulder (48A) of helicoidal development.
  • a flexible blade (50) is securely mounted against said flange-like shoulder (48A) and said blade (50) extends over a partial arc of the periphery of the flange-like shoulder (48A) (over an angular development of 180 degrees in the illustrated embodiment).
  • Acorresponding ring sector fixing ring (48B) cooperates with said blade (50) by tightening screws on the shoulder (48A).
  • the blade (50) has an external cutting edge (50A) having a development with an almost linearly changing radius from a minimum to a maximum value between the two ends (50B) and (50C) of the blade.
  • the blade (flat before mounting) assumes the helicoidal shape when it is clamped between the flange-like shoulder (48A) and the fixing ring (48B).
  • the difference D (see Fig. 6) between the maximum radius and the minimum radius of the cutting edge (50A) corresponds to the maximum dimension of the diameter of the logs (B) to be cut by the cutting machine.
  • the end (50C) of maximum radius of blade (50) moves along a circular trajectory T.
  • the trajectory T in the lower stretch thereof, passes below the sections of the logs B which are in the cradles (4, 4A, 4C).
  • the inclination of the axis of the rotor (42) (which is parallel to the axis of sleeve (14) and shaft (15)) is such that the chord of the blade helix, within the arc where it engages the logs B to be cut, is substantially perpendicular to the axes of the logs, i.e., to the axes of the cradles in which the logs are sliding.
  • the geometrical condition mentioned above is approximate, but it does provide acceptable tolerances and sufficient accuracy for the cutting plane to be substantially perpendicular to the axes of the logs to be cut.
  • the direction of rotation of the rotor being that indicated by the arrow F, during each turn the external cutting edge (50A) of the blade (50) is active for about half a revolution, that is to say, for an arc which has an angular development corresponding to the cutting edge of the blade itself.
  • Said cutting edge (50A) moves progressively down from the position of maximum distance from cradles (4, 4A, 4C) (which is that of the leading edge (50B) of the blade) until it passes beyond the bottom of the cradle (4), in the region of maximum radial dimension of the blade, i.e., in the terminal edge (50C) of said blade.
  • the full pitch of the geometrical helix defined by the cutting edge (50A) corresponds to the axial dimension of the small rolls which are obtained by cutting the logs B by means of the blade.
  • the blade carries out the cutting of the logs in the three cradles (4, 4A, 4C) by advancing along with the logs which are pushed by the pushers (5).
  • a system of cyclic variation of the advancement speed of the rolls during each revolution of the rotor (42) may be provided for increasing or decreasing the advancing speed during the step in which the blade (50) is inoperative.
  • This may be achieved through a device shown in Fig. 2 by the dotted line (200) near the universal joint (26) on the transmission (15) to (28).
  • Such device may be similar to that described in U.S. Patent Application Ser. No. 07/856,449, or in the corresponding E.P. Application No. 92830161.3, the contents of which are incorporated herein.
  • the axial dimension of the small rolls is increased by an acceleration and decreased by a deceleration.
  • the logs within cradles (4, 4A, 4C) move forward with continuous motion (and possibly with cyclic variations).
  • a lateral i.e., a peripherical support for the log
  • This is usually provided for by so-called "clamps" which, in the prior art machines, cyclically cause a temporary pressure on the log when the log is stopped to carry out the cut, and which are released to allow for the intermittent advancement of the log.
  • pressers which act continuously to provide lateral restraint, but which allow sliding of the logs because there is very little friction between the external surface of the log and the concave surface of the active parts of the pressers.
  • two elements (54) and (56) are provided whose concave surface is turned towards arrow F which indicates the movement of blade (50). Accordingly, the log, which is urged in the direction of arrow F by the blade during cutting, steadily abuts against the concave surfaces of said elements (54) and (56).
  • the elements 54A and 56A are supported by rocker members (58) which are substantially T-shaped and articulated at (60) to fixed points of the housing 1, and further articulated at (62) to a bar (64) which is pushed in the direction of arrow F64 by a spring or, preferably, by a pneumatic cylinder-piston spring (66) which reacts on a stem (68) engaged at (70) to the fixed structure of frame 1.
  • rocker members (58) which are substantially T-shaped and articulated at (60) to fixed points of the housing 1, and further articulated at (62) to a bar (64) which is pushed in the direction of arrow F64 by a spring or, preferably, by a pneumatic cylinder-piston spring (66) which reacts on a stem (68) engaged at (70) to the fixed structure of frame 1.
  • resilient yielding elements (54A) and (56A) allows also to match variations in the diameter of the logs fed to the cutting machine, at least within certain limits of tolerance.
  • the elements (54, 56, 54A, 56A) have flared or "funnel"-shaped edges facing the incoming material, and have rear ends tapered or shaped to accommodate the blade during the cutting.
  • the sharpening system must be provided with cyclic radial motion which accommodates the variations of the radius of the cutting edge (50A), and with a cyclic axial motion which follows the helicoidal shape of the cutting edge (50A).
  • cyclic radial motion which accommodates the variations of the radius of the cutting edge (50A)
  • a cyclic axial motion which follows the helicoidal shape of the cutting edge (50A).
  • Each of these two cyclic motions which are synchronous, must be carried out during each revolution of the rotor (42).
  • Each revolution must have an active phase while the cutting edge (50A) slides in front of the sharpening system, and a return phase synchronised with the arc without cutting edge.
  • the sharpening system must adjust progressively during the life of the blade, to compensate for the wear of the blade and maintain the sharpening thereof.
  • a support (74) is fixed on the unit 16 which oscillates on the sleeve (14).
  • Two guides (80) are fixed on the extension (74A) of said support by means of blocks (76), (78), the guides lying in a radial plane passing through the axis of rotor (42) and shaft (45).
  • Said guides (80) also lie in a plane inclined with respect to a plane perpendicular to the axis of rotation of the rotor (42). This inclination actually corresponds to the inclination of the straight line LR (see Fig. 10) grazing the ends (50B) and (50C) of blade (50) when these ends are in their closest position to guides (80).
  • a pin (82) Mounted on the support (74), and in particular on bracket (74B) (see Fig. 4) is a pin (82), the axis of which is parallel to that of shaft (45) and on which a lever arm (84) can oscillate.
  • a dual tappet roller (86) is fastened to said arm (84), and it has two coaxial rollers which operate between the two flanks of a channel cam (88), the two flanks of different height of said channel (88) (see Figs. 3 and 4).
  • the channel (88) is formed in a discoidal body (90) which is fixed to the blade rotor (42).
  • the channel cam (88) is annularly developed so that, with the rotation of the rotor (42) of blade (50), the lever arm (84) may oscillate under the control of the channel cam (88).
  • the movable end of the lever arm (84) engages, through a ball-joint articulation generally shown at (92), a tie-strut rod (94) having the function indicated below.
  • Slidingly mounted on the guides (80) is a slide (96) which may be driven into reciprocating motion along the guides (80) by the tie-strut rod (94) which, at the end opposite the ball-joint (92) is another ball-joint (98) connected to the slide (96).
  • the ball joints (92), (98) allow the reciprocating operation of the slide (96) by means of the lever arm (84) even though the guides (80) are inclined as set forth above.
  • the slide (96) supports, throgh an extension (96A), two parallel guides (100), (102).
  • the guide (100) is cylindrical and fixed, while the guide (102) is a guide-shaft able to rotate within ball bearings (104), but not move axial displacements, and is provided with a threaded section (102A).
  • Sliding on guides (100) and (102) is a skid (106) which is capable of movement along the guides (100) and (102) in a direction which is kept substantially at right angle to the axis of rotor (42) and shaft (45).
  • the skid (106) carries, in the manner indicated hereinafter, the grinding wheels forsharpening the blade (50).
  • Said skid (106) which, along with the grinding wheels is coordinated with the reciprocating motion of slide (96), must be progressively and slowly moved closer to the rotor to accommodate the progressive wear of the blade (50), to ensure the correct sharpening of the cutting edge (50A) of the blade.
  • the slide (96) is driven at a frequency corresponding to that of rotation of the rotor (42), with reciprocating displacements LR (see Figs. 10 and 13) along the guides (80) in order to follow, during each revolution, the radial and axial variation of the shape of the cutting edge (50A) of blade (50).
  • the grinding wheels which are carried by the skid (106), must be progressively and slowly displaced with respect to the slide (96) to the extent necessary to compensate for the progressive wear of blade (50).
  • Said progressive advancement of the skid (106) is determined by the screw-like coupling of the threaded part (102A) of cyclindrical shaft-like guide (102) with a corresponding nut (106A) of skid (106), and by the rotation of said guide (102).
  • this rotating cylindrical and threaded shaft-like guide (102) is a unidirectional (free-wheel) connection between said shaft and a rocker lever (110) oscillating with reciprocating motion about the axis of said guide shaft (102).
  • the rocker lever (110) is moved with reciprocating oscillation movements about the axis of the guide-shaft (102) by a preferably pneumatic cylinder-piston system (112), and with a frequency depending on the extent of the blade wear. This ensures, by a positive control in the two directions or by an elastic reaction control, the periodic oscillation over limited arcs of the rocker lever (110).
  • the latter forms, together with a central member (113) carried by the guide-shaft (102), a free wheel system which includes a unidirectional elastic driving member (110A).
  • This unidirectional coupling system (110), (110A), (113) makes it possible to achieve a slow, intermittent rotation of the guideshaft (102) and thereby a slow advancement of the skid (106) in the direction of arrow (F106) during a life cycle of a blade, and the return of same skid back to the starting position (spaced from the cutting edge of the blade) upon the replacement of the worn out blade with a new one.
  • the skid (106) carries a pin (116) protruding from opposite sides of said skid, to support two grinding wheel-holder units (118), (120) which are cantilever- developed and capable of being adjusted in angular position on the pin (116). Their relative angular position may be observed through respective index systems (118A), (120A), which cooperate with relevant angular scales (106A), (106B) borne by the skid (106).
  • Acylinderpiston system (126) (see Fig. 12) operates between the grinding wheel-holder unit (118) and the grinding wheel support (124), thereby causing said grinding wheel support (124) to move parallel to itself, owing to the flexibility of the leaf springs (122).
  • This grinding wheel support (124) carries a motor (127) whose projecting shaft drives the grinding wheel (128), the grinding wheel having an inclination depending on the angular setting of the grinding wheels-holder unit (118) on the shaft (116), said setting being controlled by the index (118A).
  • Another grinding wheel-holder unit (120) (which is oriented at an angle opposite to the members supported by the grinding wheels-holder unit (118) ) is similar to the grinding wheels-holder unit (118) described above, with leaf springs (132) which carry a grinding wheel support (134) designed to be controlled by a cylinder-piston system (136).
  • Said grinding wheel support (134) is provided with a motor (137) of its own, which drives the relevant grinding wheel (138), the latter being offset with respect to the one indicated by (128) and inclined in opposite direction thereto, wtih respect to the plane of the blade (50) to be sharpened.
  • the arrangement of the skid (106) and all that is connected thereto makes it possible accurately to position the grinding wheels (128) and (138) at a given inclination, and to resiliently urge them by means of the leaf springs (122) and (132) and of the cylinder-piston systems (126) and (136) against the cutting edge (50A) of blade (50).
  • This causes the grinding wheels to follow the cyclic variation of the radius of the cutting edge (50A) of blade (50) by virtue of the reciprocating motion of slide (96) at every revolution of rotor (42).
  • the grinding wheels It also causes the grinding wheels to move forward in a substantially radial direction shown by arrow F106 according to the blade wear with an intermittent feeding rate as determined by the cylinder-piston system (112) which rotates the guide-shaft (102), and thus causes the slow advancement through the screw coupling of the skid (106).
  • the replacement of the blade is accompanied by a fast return of the wear-compensating system to the original position.
  • the grinding wheels follow the blade as they are operated in a reciprocating fashion owing to the alternate motion of the slide (96) along the guides (80) and owing to the inclination of such guides (80), which makes it possible to follow the helicoidal shape of the blade as well as the radial variation of the blade during each revolution.
  • FIG. 16 to 19 Shown in Figures 16 to 19 is a second and different embodiment of the sharpening system.
  • the grinding wheels (128) and (138) are carried by the skid (106) which is progressively and radially brought close to the axis of rotor (42), by means of the guides (100) and (102) and of drive (110), (112), (113) acting on the guide (102) which is threaded at (102A), to cause the skid to advance in the direction of arrow (F106).
  • the skid (106) which is progressively and radially brought close to the axis of rotor (42)
  • the members (348), (348B) which engage the blade (350), are part of a discoidal core which also includes a centrally bored disk (246).
  • the inner edge (246A) of the disk (246) is slidingly engaged within a channel (250) formed between the discoidal body (90) of the channel cam (88), the hub (344) and a side member (252) fixed like the body (90) to the periphery of the hub (344).
  • the unit (246), (348), (348B) may be angularly displaced within the channel (250) with respect to the cam (88) which drives the slide (396) into a reciprocating motion.
  • a bush (211) which is movable about its axis which is parallel to, but offset from, the axis of rotor (42). Threadedly engaged within a diametrally extending threaded hole (213) of bush (211) is a threaded rod (215).
  • This rod (215) is rotatively connected through an articulated joint (217) to a shaft (219) mounted through roll bearings on a support (221) which is carried by unit (246), (348), (348B) of blade (350).
  • a device (223) is able to drive into a slow and intermittent rotation the shaft (219) and thus the threaded rod (215).
  • This device (223) is not described in detail as it can be constructed exactly like the device (110), (112), (113), (110A) which drives the guide- shaft (102), (102A) in the same way as described in the previous embodiment.
  • a duct for compressed air will be arranged to include a joint rotating, for example, inside the axial hole of the rotor (42) and its shaft, to lead into the pneumatic actuator of device (223).
  • the threaded rod (215) therefore, causes a gradual angular sliding of the group (348), (348B), (246), (246A) of blade (350) with respect to hub (344) and cam (90), (88), thereby determining an angular movement of the cutting edge (350A) of blade (350) in the direction of arrow F406 with respect to the sharpening wheels.
  • slide (96) actuator device (112), (110), (113), (110A); guide-shafts (100) and (102), (102A) and skid (106).
  • slide (396) carries the pin (416) for the two grinding wheels-holder units (418) and (420).
  • the arm (16) needs no longer to be moved about the axis of shaft (15) and sleeve (14), and the related members (32), (30), (34), (38), (36) are not required.
  • the arm (16) can be replaced with a lever(116) of portal- like structure, a column 116A of which replaces the adjustable support (32), (30), (34), (38), (36).

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)
  • Crushing And Pulverization Processes (AREA)
EP19930830042 1992-02-07 1993-02-05 Method and machine for cutting rolls of paper and the like Withdrawn EP0555190A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI920030A IT1258171B (it) 1992-02-07 1992-02-07 Metodo di taglio e macchina troncatrice per rotoli di carta e simili
ITFI920030 1992-02-07

Publications (2)

Publication Number Publication Date
EP0555190A2 true EP0555190A2 (de) 1993-08-11
EP0555190A3 EP0555190A3 (en) 1993-12-01

Family

ID=11349938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930830042 Withdrawn EP0555190A3 (en) 1992-02-07 1993-02-05 Method and machine for cutting rolls of paper and the like

Country Status (6)

Country Link
EP (1) EP0555190A3 (de)
JP (1) JPH05337882A (de)
KR (1) KR930017686A (de)
BR (1) BR9300499A (de)
CA (1) CA2088881A1 (de)
IT (1) IT1258171B (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609668A1 (de) * 1993-02-04 1994-08-10 Paper Converting Machine Company Geschwindigkeitvariables Transportverfahren sowie Vorrichtung für kontinuierlich angetriebene Säge
EP0692347A1 (de) * 1994-07-12 1996-01-17 James River Paper Company, Inc. Verfahren und Vorrichtung zur Herstellung von kernlosen Papierrollen
US5544557A (en) * 1995-01-13 1996-08-13 Paper Converting Machine Company Method and apparatus for cutting superposed webs
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting
WO1996040475A1 (en) * 1995-06-07 1996-12-19 The Pillsbury Company Method and apparatus for cutting dough products
EP0982105A1 (de) * 1998-08-21 2000-03-01 M T C - Macchine Trasformazione Carta S.r.l. Spannvorrichtung für Papierrolle oder ähnliche Produkte
EP1175974A3 (de) * 2000-07-27 2003-11-19 Giovanni Gambini Schärfeinheit mit Scheibenverschleissausgleichen für Schneidemaschinen zum schneiden von Rollen
WO2004004988A1 (de) * 2002-07-03 2004-01-15 Rudolf Kraft Vorrichtung zum schneiden eines gutstranges
WO2004039544A1 (en) * 2002-10-30 2004-05-13 Fabio Perini S.P.A. Sharpening unit and cutting machine comprising at least one blade and said sharpening unit
EP1970175A1 (de) 2004-03-31 2008-09-17 M T C - Macchine Trasformazione Carta S.r.l. Klemmvorrichtung für transversale Schneidemaschinen für Papierrollen
US7810419B2 (en) 2003-02-05 2010-10-12 C.G. Bretting Manufacturing Co., Inc. Rotating log clamp
US10471620B2 (en) 2016-12-07 2019-11-12 The Procter & Gamble Company Knife having beam elements
US10807263B2 (en) 2016-12-07 2020-10-20 The Procter & Gamble Company Flexible curvilinear knife
IT202100023120A1 (it) 2021-09-07 2023-03-07 Koerber Tissue S P A Un dispositivo per bloccare rotoli durante il taglio, macchina troncatrice comprendente il dispositivo e metodo

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KR101514064B1 (ko) * 2014-08-26 2015-04-22 강소랑 튜브 전단 절단 장치

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FR622332A (fr) * 1926-01-28 1927-05-28 Muller J C & Co Dispositif sectionneur muni d'organes d'aiguisage, pour machines à fabriquer les cigarettes à partir d'une corde de tabac
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609668A1 (de) * 1993-02-04 1994-08-10 Paper Converting Machine Company Geschwindigkeitvariables Transportverfahren sowie Vorrichtung für kontinuierlich angetriebene Säge
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting
EP0692347A1 (de) * 1994-07-12 1996-01-17 James River Paper Company, Inc. Verfahren und Vorrichtung zur Herstellung von kernlosen Papierrollen
US5544557A (en) * 1995-01-13 1996-08-13 Paper Converting Machine Company Method and apparatus for cutting superposed webs
WO1996040475A1 (en) * 1995-06-07 1996-12-19 The Pillsbury Company Method and apparatus for cutting dough products
US5979285A (en) * 1995-06-07 1999-11-09 The Pillsbury Company Apparatus for cutting dough products
EP0982105A1 (de) * 1998-08-21 2000-03-01 M T C - Macchine Trasformazione Carta S.r.l. Spannvorrichtung für Papierrolle oder ähnliche Produkte
EP1175974A3 (de) * 2000-07-27 2003-11-19 Giovanni Gambini Schärfeinheit mit Scheibenverschleissausgleichen für Schneidemaschinen zum schneiden von Rollen
WO2004004988A1 (de) * 2002-07-03 2004-01-15 Rudolf Kraft Vorrichtung zum schneiden eines gutstranges
WO2004039544A1 (en) * 2002-10-30 2004-05-13 Fabio Perini S.P.A. Sharpening unit and cutting machine comprising at least one blade and said sharpening unit
US7810419B2 (en) 2003-02-05 2010-10-12 C.G. Bretting Manufacturing Co., Inc. Rotating log clamp
US10046472B2 (en) 2003-02-05 2018-08-14 C.G. Bretting Manufacturing Co., Inc. Rotating log clamp
EP1970175A1 (de) 2004-03-31 2008-09-17 M T C - Macchine Trasformazione Carta S.r.l. Klemmvorrichtung für transversale Schneidemaschinen für Papierrollen
US10471620B2 (en) 2016-12-07 2019-11-12 The Procter & Gamble Company Knife having beam elements
US10807263B2 (en) 2016-12-07 2020-10-20 The Procter & Gamble Company Flexible curvilinear knife
IT202100023120A1 (it) 2021-09-07 2023-03-07 Koerber Tissue S P A Un dispositivo per bloccare rotoli durante il taglio, macchina troncatrice comprendente il dispositivo e metodo
WO2023036715A1 (en) 2021-09-07 2023-03-16 Körber Tissue S.p.A. A device for clamping logs during cutting, log saw comprising the device and method

Also Published As

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ITFI920030A1 (it) 1993-08-07
BR9300499A (pt) 1993-08-10
JPH05337882A (ja) 1993-12-21
EP0555190A3 (en) 1993-12-01
IT1258171B (it) 1996-02-20
KR930017686A (ko) 1993-09-20
ITFI920030A0 (it) 1992-02-07
CA2088881A1 (en) 1993-08-08

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