EP0044550A1 - Procédé et dispositif de débitage d'une plaque en contre-plaqué - Google Patents

Procédé et dispositif de débitage d'une plaque en contre-plaqué Download PDF

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Publication number
EP0044550A1
EP0044550A1 EP81105698A EP81105698A EP0044550A1 EP 0044550 A1 EP0044550 A1 EP 0044550A1 EP 81105698 A EP81105698 A EP 81105698A EP 81105698 A EP81105698 A EP 81105698A EP 0044550 A1 EP0044550 A1 EP 0044550A1
Authority
EP
European Patent Office
Prior art keywords
plate
blades
blade
dividing
feed
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Withdrawn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
EP81105698A
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German (de)
English (en)
Inventor
Fritz Flötotto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0044550A1 publication Critical patent/EP0044550A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L7/00—Arrangements for splitting wood
    • B27L7/02—Arrangements for splitting wood using rotating members, e.g. rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching

Definitions

  • the invention relates to a method and a device for dividing a plate or a plate-shaped strand, in particular consisting of chipboard material, into plate pieces by engagement of a rotating tool with the plate, the plate and the tool being subjected to a relative movement in the dividing direction by advancing.
  • the sawing devices are in constant use, particularly in particle board plants with high press performance, so that the cutting edges of the saw teeth are worn out in a relatively short time and have to be reground. This means that additional work is required in terms of machines and working hours, and there are business interruptions during the exchange of the sawing tools inevitable.
  • a method in order to achieve the above object, in which, in order to divide the plate, the latter is displaced relative to a rotating tool in the dividing direction, the tool being brought into engagement with the plate during feed, and the special feature of which is that for immediate detachment of the plate pieces or just to initiate the separation with subsequent completion elsewhere, on at least one of the two surfaces of the plate as a tool a thin-walled, smooth-edged, circular metal blade in the dividing plane is pressed into the plate material so that the metal blade reaches a predetermined depth of penetration in the plate to be displaced relative to the metal blade and a penetration point of the tool that migrates at least along the dividing line and on the surface of the tool facing away from the metal blade Plate effective back pressure is generated.
  • a new separation principle is used for chipboard material and for material comparable in the separability with chipboard material, in that instead of the rotating sawing tool previously used during the relative feed between plate and tool, a thin-walled, circular metal blade with a smooth edge and not interrupted by saw teeth, without chips or the like, is pressed into the plate material until a predetermined depth of penetration, which corresponds to the thickness of the plate in the case of relatively thin material, so that the division is brought about directly with a metal blade, while in other cases, such as It will also be explained, if possible several metal blades arranged one behind the other in the feed direction in the same dividing plane are used one after the other, thus dividing the plate step by step.
  • the pressing of the metal blade into the plate requires a corresponding counterpressure at the point of penetration of the metal blade.
  • the relative movement between the plate and the tool is preferably realized in that the plate is guided along the rotating metal blade by means of a corresponding feed.
  • the method according to the invention allows, depending on the material and thickness of the plate, the division either immediately, in one operation, by using one or more blades in the same vertical dividing plane, or only to the extent that the plate pieces are still separated by webs after this dividing process remain connected to each other, which can later be easily severed from each other at another point in order to detach the individual plate pieces. In the latter case, the plate pieces that are still connected can be easily transported and handled.
  • the dividing method according to the invention can basically be carried out with a metal blade engaging on one of the two surfaces of the plate, the use of a pair of blades is preferred.
  • the plate is expediently displaced through an oppositely rotating pair of blades lying essentially axially parallel to one another in the direction of thickness of the plate, in such a way that the metal blades are pressed into the plate from both surfaces in the dividing plane and in the process act upon one another with counterpressure.
  • the effect of the method according to the invention is significantly improved and further simplified when using a pair of blades, since the possible penetration depth is doubled by the mutual attack on both plate surfaces and the counterpressure required when the knife blades are pressed in is applied by the blades themselves by the reaction pressure which arises on each blade.
  • the metal blades rotate in opposite directions in such a way that they take the plate with it due to the friction that occurs when it penetrates the plate material and therefore act at the same time as transport rollers. This feature also helps to reduce energy consumption in contrast to the mode of operation of sawing devices in which the saw teeth can only be cut by appropriate feed pressure.
  • the splitting process is expediently distributed over several blades or pairs of blades connected in series .
  • the plate is successively brought into engagement in the feed direction with a plurality of metal blades which act essentially in the parting plane, the depth of penetration of the metal blades in the feed direction being gradually, if desired, complete Splitting in the thickness direction of the plate increases.
  • the subordinate blades each engage in the gap worked into the plate by the previous pair of blades in order to further deepen it according to the penetration dimension assigned to them or, if this is the last pair of blades, to complete the splitting process if desired is.
  • An essential feature of this method of operation is that downstream pairs of blades are given lateral guidance in the gap that has already been prepared.
  • blades assigned to different parting planes are brought into engagement with the plate in the feed direction.
  • the blades start from the outer edges of the plate, individually or in Groups or pairs, one after the other, progressively engaging the plate.
  • This process design is preferable if the plate is divided into a plurality of strip-shaped plate pieces and the thickness and material type of the plate cause a slight increase in the width of the plate during the dividing process. In such a case, a plate which widens in a fan-shaped manner as the division progresses results, so that the vertical engagement planes would have to be arranged offset one behind the other correspondingly to blades assigned to the same division gap.
  • the separating process is expediently divided in the feed direction, adjacent dividing gaps being pressed progressively from the outside inwards by appropriate engagement of blades or pairs of blades in the plate.
  • the desired depth of penetration of the blades in each dividing plane is achieved immediately by pressing in only one blade or only one pair of blades, without several successive pairs of blades being effective in the same dividing plane.
  • the necessary contact pressure of the pairs of blades to immediately achieve the desired dividing dimension can be easily applied, since only a small number of pairs of blades, preferably one pair of blades on each side of the longitudinal median plane of the plate, are pressed into the plate in the same plane transversely to the direction of advance is.
  • a side guide or side bracket of the fan-shaped widening plate is expedient as the division progresses, and for this a support by resilient guides is preferable on both outer sides of the plates, because this easily accounts for a possibly different fanning out of the plate within the possible working path of the resilient side guides can be worn.
  • the invention provides that with a slight offset of the blade axes in the thickness direction of the plate, the blades are pressed so far into the central area of the plate that the depths of penetration of the blades overlap slightly. Because of this slight offset, it was pointed out in previous explanations that the axially parallel pairs of blades "essentially" lie opposite one another in the thickness direction of the plate.
  • the method according to the invention additionally permits a further improvement in the quality of the plate pieces produced by the division, by avoiding undesirable material upsets, which can occur especially when the chipboard material has not yet fully hardened.
  • a pressure is exerted on the plate by the rapidly rotating blade (s) by pressure and friction, which in the case of the use of a feeder or feed device, of the latter on the plate acting feed force is superimposed as additional tensile force.
  • the tool consists of at least one ring-shaped blade made of high-strength steel (quality HSS) which is smooth on both end faces and on the narrow, circular dividing surface and which is on a drivable shaft is attached.
  • the thickness of the blade should be in the range of 1.0 mm to 0.2 mm.
  • the most important property of this blade lies, in addition to the effects which can be achieved in the operation of the device, in the property that this blade does not require any sharpening, since from the start it has only the relatively small thickness which is necessary in order to avoid the
  • the blade is bent, for example, to achieve the desired depth of penetration in the plate material.
  • the blade can only gradually reduce its diameter over time due to wear on the outer edge, but this can easily be compensated for by adjusting the position of the blade relative to the plate. Therefore, the blade should preferably have an arrangement that is adjustable transversely to the direction of advance.
  • the blade is used to divide material that tends to stick or stick, as is the case with chipboard material that has not yet fully hardened the case may be, should be used, the blade is preferably nitrided on both sides. This avoids the sticking of particles from the plate material, and otherwise the blade sides self-clean as they pass through the gap.
  • a further essential feature of the device according to the invention is that the thickness of the blade decreases, as seen in this direction, from blade to blade during the gradual division of plates, as mentioned above, by means of blades connected in series in the direction of advance and division.
  • the first blade pressed into the plate creates a relatively wide gap, even if this is still several orders of magnitude narrower than a saw gap, into which the downstream blade penetrates without pressure and is given a guide through its sides, around the gap in turn to deepen the measure associated with this blade.
  • the next, again narrower than the previous blade also engages in the gap that is already present, in order to continue the dividing process until the desired penetration depth is reached or to complete it.
  • three pairs of counter-rotating blades are connected in series along each dividing line in order to divide panels, in particular chipboard panels made of chipboard material with a thickness of the order of approx. 25-40 mm, and the blades point in pairs in succession a thickness of 0.5 mm, 0.4 mm and 0.3 mm.
  • a plurality of blades can preferably be detached and fastened on a shaft separated from one another by spacer rings.
  • the shaft with blades is easily exchangeable in the device, so that when the blades of a shaft are completely worn, the latter only causes an extremely short interruption of operation when exchanged for a new shaft with unused blades.
  • a pair of feed rollers is also arranged at least at the feed end, preferably also at the discharge end of the device, of which at least one roller can be pressed onto the plate transversely to the feed direction by a spring device which can be adjusted depending on the plate thickness.
  • the feed rollers are preferably still provided with a rubber covering, practically a threefold adjustment to the respective plate thickness is possible, namely by the rubber covering, by the spring device and by the adjusting device by means of which the spring device or the feed rollers are attached to the device .
  • the shafts of the feed roller are provided with a freewheel so that the plates can, depending on the feed speed caused by the blades, rotate more quickly than their current drive speed.
  • the plate is preferably transported on wheel flanges connected to the blades.
  • rollers can also be arranged as additional support below the plate.
  • the plate is carried directly by the flanges next to the blades and the plate adjusts itself in this way between the blades, which are predominantly arranged opposite one another in pairs.
  • the blades are preferably bevelled on one side, namely on the outward-facing side.
  • This measure serves, like in some applications the progressively formed separation gaps from the outside in, the purpose of pushing the material of the plate outwards and not inwards, so that the fanning out of the plate which occurs under certain conditions is not hindered because this leads to warping and qeq could also lead to the clamping of the clinq in the middle area of the plate.
  • the dividing method according to the invention can be used most effectively if the chips in the plate are as perpendicular as possible to the surface of the plate, so that the separation process brought about by the blades with respect to the chips possibly takes place in a comparable manner to a splitting process.
  • the strips of the allocation machine are essential for the processor in a coherent form easier to feed by, for example, with a vertically positioned plate with parallel strips _.
  • the bottom bar in each case is pushed or pushed off the plate by means of a sword, severing the connecting web.
  • FIG. 1 The principle according to the invention for dividing plate-shaped material is illustrated in FIG. 1 with the aid of particle board material, without the principle according to the invention being restricted to this.
  • a chipboard 2 inserted in a feed device 1 in the feed direction 1 is separated by three shafts 5 connected in series and opposite each other in pairs by ring-shaped blades 3 made of high-strength steel, which can be clamped by means of spacer rings 4 and have a thickness of 0.5 mm, O, decreasing from left to right. 4 mm and 0.3 mm divided in stages.
  • the next pair of blades engages in the first gap 11 pressed by the first pair of blades 3 into the mutual surfaces of the chipboard 2 in the intended dividing plane, is thereby guided through the gap 4 and deepens it to the gap 12, in which the last pair of blades in turn 3 intervenes and completes the splitting process.
  • the last pair of blades has an offset 10.
  • the separation principle allows extremely high dividing speeds, and the smoothness of the separation surfaces increases rather than decreases the higher the shaft speed.
  • absolutely smooth dividing surfaces are important for the subsequent stacking of the plate pieces or strips on pallets, so that an absolutely straight alignment of stacked plate pieces is guaranteed.
  • the peripheral speed of the blades 3 can be regulated in the range of 20-100 m / min by drives to be explained. Since there is no significant slippage between the blades 3 and the chipboard 2, the peripheral speed of the blades also corresponds to the possible feed speed of the chipboard 2.
  • FIG. 2 The essential structure of an example of a dividing device according to the invention can be seen from FIG. 2, for the sake of a better overview the details of construction have been omitted. Where necessary, these result from the further FIGS. 3-6.
  • I-beams designated 13, form the load-bearing transverse structure.
  • the device is provided with a removable cover 14.
  • the vertical guidance and adjustment of the shaft 5 with blades 3 is achieved by the following arrangement:
  • the ends of each shaft 5 are each held and guided in a vertically arranged, plate-shaped guide piece 22 (see also FIGS. 3-6).
  • the guide piece 22 is in turn arranged in a double-T guide and can be fastened there.
  • the guide is formed from a T-shaped guide web 20 (see FIG. 3) and a guide bar 19 which can be fastened thereto by means of screws 19a for securely holding the guide piece 22 on each side of the guide piece 22.
  • the guide piece 22 has a cutout in which a pressure ring is arranged to prevent rotation, in which the lower section of an adjusting bolt 15, with which the guide piece can be raised and lowered extremely precisely when the guide is relaxed, is rotatably mounted and axially fixed is.
  • the adjusting bolt extends from the pressure ring 21 through a bore in the guide piece 22 and from there through a threaded counter-holder 17 with which the guide is releasably attached to a supporting wall 32a of the device by means of retaining screws 18.
  • the screws 19a and thus the guide are loosened.
  • the associated counter-holder 17 can be detached from the wall 32 a, so that the shaft 5 in question can be freely removed from the device, as shown in broken lines in Fig. 6 using the reference numerals 15 ', 16', 17 ', 18', 22 'for an upper and a lower shaft 5 is shown schematically in the position lifted or removed from the device.
  • the feed rollers 23 are each provided with a freewheel 23a (cf. higher feed rate caused by the blades 3 is not hampered by a lower drive speed of the feed rollers 23.
  • the discharge of the chipboard 2, which is divided into individual plate pieces or strips, is carried out by a pair of pull-out rollers 31, the design and arrangement of which essentially correspond to that of the feed rollers 23.
  • FIG. 5 shows a plurality of the blades 4 fastened on a shaft 5 by spacer rings 4 at a distance from one another and the mutual assignment of the shafts 5 and the intake and extraction rollers 23 and 31, respectively.
  • All shafts 5 and 26 are driven by a geared motor 33 (power in the present case: 4 kw), the drive speed of which can be regulated by a handwheel 33a as a result of the further gear reduction so that the peripheral speed of the blades 3 is approximately in the range from 20 to 100 m / min is infinitely variable.
  • the motor is fastened at the points denoted by 34 to corresponding brackets of a frame part 35, which in turn is attached to a frame 32 of the device, which frame is pivotable about a vertical axis of rotation 36.
  • a drive pinion 39 for a triple roller chain is attached, which transmits the drive power to a second sprocket 40, which drives a reduction gear 41, of which only the housing wall is shown in FIGS. 5 and 6.
  • a reduction gear 41 of which only the housing wall is shown in FIGS. 5 and 6.
  • the last-mentioned property is essential for a simple and quick replacement of the shafts 5 with blades 3 or also of the pull-in or pull-out rollers 23 or 31.
  • the frame part 35 can be released from its stop 37 and including the geared motor 33 and the gear 41 easily pivot away from the rest of the device.
  • the shafts 26 and 5 are not only detached from its drive without any further measure, but its holder or guide is extremely easily accessible, so that a further advantage for rapid replacement of one or more shafts 5 or 26 is achieved.
  • the device shown in FIGS. 7, 8 and 9 is very schematic and only partially shown, and the method variant that can be carried out with it is primarily in the following respects:
  • the division of the chipboard 2 into strip-shaped strips does not begin approximately simultaneously in the same transverse plane for all Stripes, but the separation gaps begin one after the other in the feed direction and progress from the outside inwards.
  • Two pairs of blades 3 arranged symmetrically to the longitudinal center axis of the plate 2 come into engagement with the plate .2. Depending on the number of strips, there are two pairs of blades in the middle. 3. for engagement or, as shown in FIGS. 7-9, a single pair of blades 3 arranged in the longitudinal center plane of the plate 2.
  • the material 2 is increasingly fanned out as a result of material displacement to the outside (cf. in particular FIG. 9). Since the degree of fanning is variable depending on the thickness and type of the plate material, a guide 60 is provided on each side of the plate strand, which can be pivoted slightly against the pressure of a spring device 62 about the vertical axis 61, the possible play .65 by stops .63 , 64, is determined.
  • the strips are each divided with a single pair of blades 3, in such a way that a web 3 ′ remains, that is to say the strips are still connected to one another when the divided plate 2 leaves the device .
  • the shafts 5 are preferably each assigned separate motors for direct drive.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Crushing And Pulverization Processes (AREA)
EP81105698A 1980-07-19 1981-07-20 Procédé et dispositif de débitage d'une plaque en contre-plaqué Withdrawn EP0044550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803027486 DE3027486A1 (de) 1980-07-19 1980-07-19 Verfahren und vorrichtung zum aufteilen einer platte aus spanplattenmaterial
DE3027486 1980-07-19

Publications (1)

Publication Number Publication Date
EP0044550A1 true EP0044550A1 (fr) 1982-01-27

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EP81105698A Withdrawn EP0044550A1 (fr) 1980-07-19 1981-07-20 Procédé et dispositif de débitage d'une plaque en contre-plaqué

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DE (1) DE3027486A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115360A1 (fr) * 1983-01-22 1984-08-08 Rolco International B.V. Installation pour la découpe de rouleaux de papier de forme allongée
DE3423856A1 (de) * 1984-06-28 1986-01-09 Fritz 4830 Gütersloh Flötotto Verfahren und vorrichtung zum aufteilen einer insbesondere aus spanplattenmaterial bestehenden platte
DE3721423A1 (de) * 1987-06-29 1989-01-19 Gaemmerler Hagen Schneidvorrichtung fuer mindestens zweilagige flaechengebilde, insbesondere papierprodukte
EP0790108A1 (fr) * 1996-02-01 1997-08-20 Concin S.A. Dispositif pour raccourcir des éléments translucides en forme de plaques multilatérales
EP0812667A2 (fr) * 1996-06-13 1997-12-17 Rupert Hirnsperger Tranchage de feuilles de bois ou planches
WO2009043492A2 (fr) * 2007-09-27 2009-04-09 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Procédé et dispositif pour fabriquer des éléments de matériau isolant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR416278A (fr) * 1910-05-23 1910-10-15 Fernand Dubreuil Machine pour la fabrication de baguettes de bois
US2717012A (en) * 1953-02-02 1955-09-06 Schneider Machine Co Wood slicing machine
FR1277394A (fr) * 1960-10-20 1961-12-01 Nouvelle coupeuse à couteaux circulaires
DE1552732A1 (de) * 1965-10-29 1970-02-12 Yoder Co Geraet zum Herstellen von Streifen
DE1901999A1 (de) * 1969-01-16 1970-08-27 Eduard Muschal Kreismesserschere

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR416278A (fr) * 1910-05-23 1910-10-15 Fernand Dubreuil Machine pour la fabrication de baguettes de bois
US2717012A (en) * 1953-02-02 1955-09-06 Schneider Machine Co Wood slicing machine
FR1277394A (fr) * 1960-10-20 1961-12-01 Nouvelle coupeuse à couteaux circulaires
DE1552732A1 (de) * 1965-10-29 1970-02-12 Yoder Co Geraet zum Herstellen von Streifen
DE1901999A1 (de) * 1969-01-16 1970-08-27 Eduard Muschal Kreismesserschere

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0115360A1 (fr) * 1983-01-22 1984-08-08 Rolco International B.V. Installation pour la découpe de rouleaux de papier de forme allongée
DE3423856A1 (de) * 1984-06-28 1986-01-09 Fritz 4830 Gütersloh Flötotto Verfahren und vorrichtung zum aufteilen einer insbesondere aus spanplattenmaterial bestehenden platte
DE3721423A1 (de) * 1987-06-29 1989-01-19 Gaemmerler Hagen Schneidvorrichtung fuer mindestens zweilagige flaechengebilde, insbesondere papierprodukte
EP0790108A1 (fr) * 1996-02-01 1997-08-20 Concin S.A. Dispositif pour raccourcir des éléments translucides en forme de plaques multilatérales
US6148706A (en) * 1996-02-01 2000-11-21 Concin S.A. Device for shortening translucent multilateral plate material
EP0812667A2 (fr) * 1996-06-13 1997-12-17 Rupert Hirnsperger Tranchage de feuilles de bois ou planches
EP0812667A3 (fr) * 1996-06-13 1998-12-02 Rupert Hirnsperger Tranchage de feuilles de bois ou planches
WO2009043492A2 (fr) * 2007-09-27 2009-04-09 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Procédé et dispositif pour fabriquer des éléments de matériau isolant
DE102007046100A1 (de) * 2007-09-27 2009-04-09 Deutsche Rockwool Mineralwoll Gmbh + Co Ohg Verfahren und Vorrichtung zur Herstellung von Dämmstoffelementen
WO2009043492A3 (fr) * 2007-09-27 2009-05-28 Rockwool Mineralwolle Procédé et dispositif pour fabriquer des éléments de matériau isolant

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