EP0177418B1 - Vorrichtung zum Schneiden eines Papperohres mit einer harter Oberfläche - Google Patents

Vorrichtung zum Schneiden eines Papperohres mit einer harter Oberfläche Download PDF

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Publication number
EP0177418B1
EP0177418B1 EP85401900A EP85401900A EP0177418B1 EP 0177418 B1 EP0177418 B1 EP 0177418B1 EP 85401900 A EP85401900 A EP 85401900A EP 85401900 A EP85401900 A EP 85401900A EP 0177418 B1 EP0177418 B1 EP 0177418B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
tube
knife
grinding
wear
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
Application number
EP85401900A
Other languages
English (en)
French (fr)
Other versions
EP0177418A1 (de
Inventor
Pierre Vanlauwe
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.)
Lhomme SA
Original Assignee
Lhomme SA
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 Lhomme SA filed Critical Lhomme SA
Publication of EP0177418A1 publication Critical patent/EP0177418A1/de
Application granted granted Critical
Publication of EP0177418B1 publication Critical patent/EP0177418B1/de
Expired 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
    • 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
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5199—Work on tubes

Definitions

  • the invention relates to a device for cutting a cardboard tube with a hard surface.
  • the cardboard tubes have, for certain applications, a hardness which is substantially constant over their entire thickness or only a surface hardness.
  • Cardboard tubes are generally produced continuously, on machines called spirals, by winding a plurality of strips of paper or cardboard.
  • the formed tube is rotated and simultaneously in longitudinal translation and sectioned during its formation, in unitary tubes, in a cutting or sectioning station.
  • the individual tubes can, after transformation or finishing, be cut again.
  • the invention applies equally to the cutting device arranged at the end of a spiraling machine, as to a device for cutting individual tubes.
  • the cutting devices generally used comprise at least one knife which acts on the tube rotated, by cooperating with a support mandrel or counterpart disposed inside said tube.
  • the knife which acts without removal of material, often causes flaking of said surface.
  • the inventor sought and found a solution to avoid this chipping and therefore the finishing operation.
  • US Patent 3,711,996 representing the closest prior art describes an apparatus for making V-belts from a rubber sleeve.
  • grinding wheels or the like provide V-shaped grooves over the greater part of the thickness of the sleeve while knives arranged in pairs are arranged to cut belts by penetrating said grooves and cutting the very small remaining thickness .
  • the problem solved by the invention is a simple cutting of a tube with a hard surface whose sections, after cutting, must on the contrary be as flat and perpendicular to the axis of the tube as possible.
  • the device according to the invention provided with at least one knife, a device for rotating the tube, a grinding wheel and means intended to move the latter towards said tube, the grinding wheel and the knife being controlled for act successively and in such a way that the knife only comes into action at the earliest at the end of grinding, is remarkable, according to a first mode of use in that said grinding wheel and the knife are mounted on separate carriages arranged on either side of a vertical plane passing through the longitudinal axis of the tube, said carriages being moved in a plane substantially parallel to the axis of said tube, between an initial position and a maximum working position, positions which are possibly adjustable as a function of the diameter of the tube and of the desired grinding depth and / or of the wear of the grinding wheel, the knife being preferably, but not necessarily, diametrically opposite the grinding wheel relative to the tube.
  • the grinding wheel is fitted on its mobile carriage by means of a support which is itself slightly sliding mounted on said carriage using means for adjusting the position of said support on the carriage in order to maintain, despite wear, a substantially constant relative position of the active part of the grinding wheel relative to the tube, by periodically catching up on said wear with said adjustment means.
  • US patent 3,752,024 describes a cutting device provided with two rotary knives which are arranged on either side of the tube to be cut, while one of the knives is driven in its movement by the other knife.
  • This known device does not recommend the use of a grinding wheel and even less a successive grinding wheel-knife work.
  • the knife and the grinding wheel are arranged below one another and on the same side with respect to a vertical plane passing through the longitudinal axis of the tube, in pivoting mounts actuated by means controlled so that said grinding wheel and said knife act successively by pivoting each between two extreme positions, the maximum working position of the grinding wheel being predetermined as a function of the diameter of the tube and of the desired grinding depth and / or of its wear .
  • the grinding wheel has the shape of a disc whose attack profile, or active part, is substantially V-shaped, while it is rotated in the same direction as the tube for work in opposition.
  • the knife is fixed in rotation.
  • the invention also provides, but is not compulsory, means for grinding or sharpening the grinding wheel for periodically grinding said grinding wheel when the latter is not in action.
  • the grinding or sharpening means comprise tools moved by actuation means which are fixedly mounted transversely relative to the tube, said tools being intended to be actuated in combination with a modification of the maximum working position of the grinding wheel by a value at least equal to its wear.
  • the grinding wheel and the knife can then be slaved to the movement of longitudinal advancement of the tube, means for turning back, in the longitudinal direction, of the knife and the grinding wheel being provided for successive cutting-off.
  • Figure 1 we can see a cardboard tube 1 to cut, a knife 2, mounted on a carriage 3 sliding in a frame 4, and a grinding wheel 5, mounted on a carriage 6 sliding in a frame 7.
  • the tube 1 is driven in rotation according to arrow F 1 and the grinding wheel 5, in the form of a disc, is driven in the same direction according to arrow F 2 by means of a drive motor 8, for work in opposition.
  • the carriages 3 and 6 of the knife 2 and respectively of the grinding wheel 5 are arranged on either side of the tube 1 so that said knife and said grinding wheel are diametrically opposite with respect to the tube 1, the carriages 3 and 6 being ripe transversely to the longitudinal axis of said tube by means of cylinders 9 and 10 respectively.
  • Limit stops 11 to 14 possibly provided, at least for some, with micrometric adjustment screws, and microswitches 15, 15 'and 16, 16' are arranged in the frames 4 and 7 for the reasons explained above. after.
  • the grinding wheel 5 has the shape of a disc, the edge of which is profiled substantially in a V as shown in FIG. 3.
  • said grinding wheel is disposed on a support 17 which can slide slightly in the carriage 6 by means of a micrometric screw. 18 moved by a flywheel 19 or a motorized means.
  • a counterpart 20 is provided in the conventional manner, intended to cooperate at the time of cutting with the knife 2.
  • FIG. 1 shows the carriages 3 and 6 in extreme remote positions relative to the tube 1.
  • the jack 10 is controlled so as to drive the carriage 6 and the grinding wheel 5 towards the tube 1.
  • the said grinding stone enters the tube, removing material by abrasion.
  • the grinding wheel thus penetrates over a small part of the thickness of the tube (for example about 10% of this) until the carriage 6 simultaneously meets the limit stop 13 and the microswitch 16, the position of these two elements being provided or adjusted according to the chosen grinding depth and the diameter of the tube, the grinding wheel must in no case meet the counterpart 20.
  • the actuation of the microswitch 16 causes, by servo means and jacks 10 and 9, on the one hand, the retraction of the carriage 6 to its initial position, its stroke ending on the microswitch 16 'and the stop 14 and, on the other hand, the advance of the carriage 3 and therefore of the knife 2 towards the tube.
  • the knife completes the cut by entering the groove left by the grinding wheel and then in the tube itself until the carriage 3 meets the end of travel stop 12 and the microswitch 15.
  • microswitch 15 causes a reversal of movement of the jack 9 and a retreat of the carriage 3 until the latter meets the end of travel stop 11 and the microswitch 15 ′, the elements being found in the position initial of Figure 1, ready for a new sectioning.
  • FIGS. 2 and 3 also show means for sharpening or grinding the grinding wheel, comprising two diamonds 21 and 22 matured by jacks 23 and 24 respectively.
  • the jacks 23, 24 are arranged on mounts 25 (FIG. 2) integral with the frame 7. These jacks and the diamonds 21 and 22 which equip them thus allow periodic correction, for example during the retraction of the carriage 3 carrying the knife 2, the profile of the grinding wheel 5, after (or before) it has been advanced by a value at least equal to its wear, by means of the screw 18 and the flywheel 19 described above (FIG. 1).
  • FIG. 4 shows another preferred embodiment according to the invention.
  • the grinding wheel 5 ′ and the knife 2 ′ are mounted in mounts respectively 28, 29 which pivot around fixed axes 30, 31 of a frame 32.
  • the pivots of the mounts 28, 29 are provided by jacks 33 and 34 respectively which each have one of their ends articulated to said frame 32.
  • the knife 2 ′ and the grinding wheel 5 ′ are here arranged one below the other (the grinding wheel 5 ′ above) and on the same side with respect to a passing vertical plane by the longitudinal axis of the tube 1 (this arrangement is obviously not restrictive).
  • the knife 2 or 2 ′ may be free in rotation or motor or even and preferably fixed in rotation.
  • the servo-control of the actuators of the cylinders 33 and 34 is such that the grinding wheel 5 'acts first by the action of the actuator 33 which then retracts, while the actuator 34 acts on the knife 2' before in turn retracting for return to the initial position.
  • the extreme initial and final positions of the frames 28, 29 are of course predetermined, but it is clear that if the maximum working position of the grinding wheel 5 ′ is relatively precise (and advantageously adjustable) and depends on the diameter of the tube, on the depth of desired grinding and / or of its wear, the knife 2 ′ (like the knife 2 in FIG. 1) can finish on the counterpart 20 with a slight pressure.
  • the devices shown are more particularly intended for cutting individual tubes, it is obvious that such devices can also be used at the end of a spiraling machine for manufacturing a continuous tube.
  • the knife 2, 2 ′ and the grinding wheel 5, 5 ′ must necessarily, when in action, follow the advancing movement of the tube 1, which is perfectly achievable by controlling the movement of the frames 4, 7 and respectively 32 which are then provided with means for turning back in the longitudinal direction in order to be able to carry out successive cross-sections during the manufacture of the tube.
  • the depth of the groove to be produced will depend on the hardness of the material and / or the thickness of the hard layer, but in general this is small compared to the thickness of the tube, the knife performing the most of the cut.
  • the profile of the grinding wheel described is V-shaped, it can be slightly concave so as to form a groove whose walls are slightly convex, the edges then being rounded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (10)

1. Vorrichtung zum Schneiden eines Papprohrs mit harter Oberfläche, die wenigstens ein Messer (2), eine Vorrichtung zum Rotieren des Rohrs (1), eine Schleifscheibe (5) und Mittel (6, 10) aufweist, die dazu dienen, letztere in Richtung auf das Rohr zu bewegen, wobei Schleifscheibe (5) und Messer (2) so gesteuert werden, daß sie sich nacheinander bewegen derart, daß das Messer frühestens am Ende des Schleifvorganges eindringt, dadurch gekennzeichnet, daß die Schleifscheibe (5) und das Messer (2) auf verschiedenen Schlitten (6, 3) montiert sind, die beidseitig von einer vertikalen Ebene, die die Längsachse des Rohrs durchläuft, angeordnet sind, und die Schlitten auf einer zu der Achse des Rohrs im wesentlichen parallelen Ebene zwischen einer Ausgangs- und einer Endarbeitsposition bewegt werden, welche gegebenenfalls in Abhängigkeit vom Durchmesser des Rohrs und der gewünschten Schleiftiefe und/oder der Abnutzung der Schleifscheibe einstellbar sind.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Schleifscheibe (5) und Messer (2) in bezug auf das Rohr diametral entgegengesetzt angeordnet sind.
3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Schleifscheibe (5) auf ihrem beweglichen Schlitten (6) mittels einer Stütze (17) befestigt ist, die selbst leicht verschiebbar auf dem Schlitten unter Verwendung von Mitteln (18, 19) zur Einstellung der Position der Stütze auf dem Schlitten angebracht ist, um trotz der Abnutzung eine im wesentlichen konstante relative Position des wirksamen Teiles der Schleifscheibe in bezug auf das Rohr einzuhalten, indem in zeitlichen Abständen die Abnutzung mit den Mitteln zur Einstellung ausgeglichen wird.
4. Vorrichtung zum Schneiden eines Papprohrs mit harter Oberfläche, die wenigstens ein Messer (2'), eine Vorrichtung zum Rotieren des Rohrs (1), eine Schleifscheibe (5') und Mittel (28, 33) aufweist, die dazu dienen, letztere in Richtung auf das Rohr zu bewegen, wobei die Schleifscheibe (5') und das Messer (2') so gesteuert werden, daß sie sich nacheinander bewegen derart, daß das Messer frühestens am Ende des Schleifvorganges eindringt, dadurch gekennzeichnet, daß das Messer (2') und die Schleifscheibe (5') untereinander und in bezug auf eine vertikale Ebene, die die Längsachse des Rohrs durchläuft, auf derselben Seite an schwenkbaren Halterungen (28, 29) angeordnet sind, die von gesteuerten Mitteln (33, 34) angetrieben werden, derart, daß die Schleifscheibe (5') und das Messer (2') sich nacheinander bewegen, wobei sie jeweils zwischen zwei extremen Positionen schwenken und die Endarbeitsposition der Schleifscheibe in Abhängigkeit vom Durchmesser des Rohrs und der gewünschten Schleiftiefe und/oder der Abnutzung der Schleifscheibe vorherbestimmt wird.
5. Vorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Schleifscheibe (5, 5') die Form einer Scheibe aufweist, deren Angriffsfläche oder wirksames Teil im wesentlichen V-förmig ausgebildet ist.
6. Vorrichtung nach einem der Ansprüche 1-5, dadurch gekennzeichnet, daß die Schleifscheibe (5, 5') für eine entgegengesetzt gerichtete Arbeit in gleicher Richtung wie das Rohr rotiert wird.
7. Vorrichtung nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß das Messer bei der Drehung fest ist.
8. Vorrichtung nach einem der Ansprüche 1-7, dadurch gekennzeichnet, daß Mittel (21, 24) zum Schleifen der Schleifscheibe vorgesehen sind, um letztere in zeitlichen Abständen zu schleifen, wenn sie in Ruhestellung ist.
9. Vorrichtung nach Anspruch 8, die mit Mitteln zum Ausgleichen der Abnutzung der Schleifscheibe versehen ist, dadurch gekennzeichnet, daß die Mittel zum Schleifen durch Antriebsmittel (23, 24) angetriebene Werkzeuge (21, 22) aufweisen, die quer in bezug auf das Rohr fest (25, 7) angebracht sind, wobei die Werkzeuge dazu dienen, in Abhängigkeit von einer Veränderung der Endarbeitsposition der Schleifscheibe um einen Wert, der zumindest ihrer Abnutzung entspricht, angetrieben zu werden.
10. Vorrichtung nach einem der Ansprüche 1-9 zum Schneiden eines kontinuierlich hergestellten Rohrs, dadurch gekennzeichnet, daß die Schleifscheibe (5, 5') und das Messer (2, 2') in Abhängigkeit von der längsgerichteten Vorwärtsbewegung des Rohrs (1) gesteuert werden, wobei Mittel zur längsgerichteten Zurückbewegung des Messers und der Schleifscheibe für aufeinanderfolgende Schneidvorgänge vorgesehen sind.
EP85401900A 1984-10-02 1985-09-30 Vorrichtung zum Schneiden eines Papperohres mit einer harter Oberfläche Expired EP0177418B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415107 1984-10-02
FR8415107A FR2570977B1 (fr) 1984-10-02 1984-10-02 Procede et dispositif de tronconnage d'un tube carton a surface dure.

Publications (2)

Publication Number Publication Date
EP0177418A1 EP0177418A1 (de) 1986-04-09
EP0177418B1 true EP0177418B1 (de) 1989-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401900A Expired EP0177418B1 (de) 1984-10-02 1985-09-30 Vorrichtung zum Schneiden eines Papperohres mit einer harter Oberfläche

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US (1) US4794684A (de)
EP (1) EP0177418B1 (de)
DE (1) DE3568407D1 (de)
FR (1) FR2570977B1 (de)

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Publication number Priority date Publication date Assignee Title
ATE139164T1 (de) * 1992-12-15 1996-06-15 Peter Lisec Vorrichtung zum schneiden einer glastafel
US5759089A (en) * 1996-01-16 1998-06-02 Mccoy; Thomas Edward Apparatus for in-line surface finishing of cylindrical tubing such as stainless steel tubing with supporting mandrel and method
DE69616782T2 (de) * 1996-08-30 2002-08-08 Sica S.P.A., Alfonsine Verfahren zum Durchtrennen von rohrförmigem Stab
DE60100617T2 (de) 2000-10-06 2004-06-09 Visteon Global Technologies, Inc., Dearborn Herstellung eines Rohres für einen Wärmetauscher
FR2860447B1 (fr) * 2003-10-06 2006-12-08 Pack Ind Procede de coupe d'un tube en ligne et dispositif de coupe mettant en oeuvre ledit procede
US20050149087A1 (en) * 2003-11-05 2005-07-07 Applied Medical Resources Corporation Multiple-angle scissor blade
FI119419B2 (fi) * 2005-01-26 2011-10-13 Raumaster Paper Oy Menetelmä ja laitteisto hylsyn katkaisemiseksi
CN111843789A (zh) * 2019-04-29 2020-10-30 中核检修有限公司 直柄内磨机转型专用工具、直柄切割机及直柄磨光机
CN112936011B (zh) * 2021-01-25 2023-04-07 河南中玻玻璃有限公司 一种夹丝玻璃用切割面防锈装置

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US1618541A (en) * 1926-01-02 1927-02-22 James A Long Method of and apparatus for manufacturing chamfered pipe and nipple blanks
GB259162A (en) * 1926-07-06 1926-10-07 George Laroche A machine for cutting tubes of cardboard or paper into rings
US2600548A (en) * 1946-09-05 1952-06-17 Brown & Sharpe Mfg Grinding wheel truing apparatus
US3752024A (en) * 1960-08-22 1973-08-14 Judelshon Inc Oscar I Cutting mechanism for rotary knife cutting machines
US3355749A (en) * 1965-05-17 1967-12-05 James C Steffen Combined tube cutting and cleaning device
US3711996A (en) * 1970-09-08 1973-01-23 Goodyear Tire & Rubber Apparatus for manufacturing v belts
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US4052822A (en) * 1976-03-15 1977-10-11 Western Gear Corporation Method and apparatus for abrasively cutting objects
FR2377264A1 (fr) * 1977-01-14 1978-08-11 Sekisui Chemical Co Ltd Appareil pour tronconner des tuyaux de section irreguliere et biseauter leurs extremites
US4090424A (en) * 1977-03-29 1978-05-23 Liggett Group Inc. Apparatus for cutting filter plugs from a moving filter rod stream
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SE440876B (sv) * 1981-12-30 1985-08-26 Bengt Gottfrid Fjellstrom Slangkapningsmaskin for kapning av armerad slang

Also Published As

Publication number Publication date
EP0177418A1 (de) 1986-04-09
FR2570977B1 (fr) 1988-07-01
US4794684A (en) 1989-01-03
FR2570977A1 (fr) 1986-04-04
DE3568407D1 (en) 1989-04-06

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