EP0666153A1 - Scie à tronçonner de troncs d'arbre - Google Patents

Scie à tronçonner de troncs d'arbre Download PDF

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Publication number
EP0666153A1
EP0666153A1 EP94114862A EP94114862A EP0666153A1 EP 0666153 A1 EP0666153 A1 EP 0666153A1 EP 94114862 A EP94114862 A EP 94114862A EP 94114862 A EP94114862 A EP 94114862A EP 0666153 A1 EP0666153 A1 EP 0666153A1
Authority
EP
European Patent Office
Prior art keywords
cross
log
cut
saw
cut saw
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.)
Granted
Application number
EP94114862A
Other languages
German (de)
English (en)
Other versions
EP0666153B1 (fr
Inventor
Peter Dipl.-Ing. Fh Klement
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.)
Holtec & Co GmbH
Original Assignee
Holtec & Co GmbH
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 Holtec & Co GmbH filed Critical Holtec & Co GmbH
Publication of EP0666153A1 publication Critical patent/EP0666153A1/fr
Application granted granted Critical
Publication of EP0666153B1 publication Critical patent/EP0666153B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B27B1/002—Methods for subdividing trunks or logs essentially involving sawing by cross-cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines

Definitions

  • the invention relates to a chop saw device for logs with an infeed conveyor with a centering device arranged at the downstream end, an outfeed conveyor with a clamping device arranged at the upstream end and at least one chop saw arranged between the conveyors and performing a cut from top to bottom.
  • the centering device arranged at the end of the infeed conveyor also serves as a clamping device, centering being carried out in the center of the conveyor by lateral clamping.
  • the clamping device formed in this way is supplemented by a mechanism which grips into the log from above and below before a saw cut is carried out with the cross-cut saw.
  • the end of the discharge conveyor facing the cross-cut saw is also provided with a clamping device in order to be able to also cut the trailing end of the log, which can no longer be held by the centering and clamping device at the end of the feed conveyor.
  • the cross-cut saw with two saws arranged next to one another, one of which is a circular saw and the other a swiveling chain saw. Up to a diameter of approx. 45 cm, a quick cross-cut can be made with the circular saw. For larger diameters, the swivel saw is activated and used to make the cut.
  • the invention has for its object to improve known cross-cut saws of the type mentioned in terms of the time required with at least the same good function.
  • a cross-cut saw device of the type mentioned at the outset is characterized in that the centering device of the infeed conveyor consists of two flaps which are arranged on both sides of the infeed conveyor and are pivotable about the upstream vertical axis of rotation with flaps with straight edges in the vertical direction, and in that in the flaps a measuring arrangement sensing the height of the log is integrated, which is connected to a control for the chop saw.
  • the centering device according to the invention with the flaps directed downstream enables a quick and safe centering of the log in front of the cross-cut saw, the log not having to be fixed separately in the vertical direction.
  • a suitable abutment against the cut with the chop saw from top to bottom can be effected in a suitable manner by an end roller of the infeed conveyor which can be pressed against the log from below. In this way, time can be saved already when centering the log.
  • the measuring arrangement integrated in the flaps for the height of the log is of great importance for controlling the cutting process. It enables a multitude of control actions, which serve to save further time during the cutting processes.
  • the measuring arrangement is suitable, in the presence of several saws for the chop cut, the suitable saw that is relevant Fastest cut can be selected.
  • control connected to the measuring arrangement can move the cross-cut saw from a starting position to a standby position dependent on the measured log height, in order to save delivery time for the saw to the log.
  • the flaps for the further transport of the cut log only partially open as long as a log end between the flaps can still be detected. This saves time both when opening and when closing the flaps for a new centering process. The flaps only open completely after the trailing end of the log has passed through, which can be detected by the measuring arrangement.
  • the clamping device of the outlet conveyor can be formed in a simple manner by a pincer-like jaw with a toothed concave edge which can be moved from above in the direction of the outlet conveyor. At this point, the toothed concave edge can be used with advantage since the trunk was previously centered by the centering device.
  • the clamping device for performing an end cut at the trailing end of the log is effectively controllable and remains ineffective when there is a sufficiently long end of the log on the infeed conveyor.
  • an end roller of the discharge belt is preferably moved from below against the log to serve as a counter bearing for the clamping device.
  • the measuring arrangement in the flaps can preferably be formed by optical sensors, preferably light barriers, arranged vertically one below the other.
  • the drawing shows an infeed belt as an infeed conveyor 1, on the two sides of which flaps 2 are arranged on the downstream end, which flaps can be pivoted towards one another as centering means about vertical axes of rotation arranged at their upstream ends for gripping a log S in the center.
  • a cross-cut saw 5 with a saw housing 4 is arranged at the end of the infeed conveyor 1.
  • an outfeed belt is connected downstream of the chop saw 5 as an outfeed conveyor 6.
  • the inlet belt 1 and outlet belt 6 are each provided with an end roller 7, 8, which can be raised and lowered and are designed in the form of double-tapered rollers.
  • Stage A shows a log S entering the infeed conveyor 1 with the flaps 2, the cross-cut saw 5 and the clamping device 9 and the end rollers 7, 8 in the starting position.
  • the height of the log S is detected and, with the detected value, the crosscut saw 5 from the starting position (stage A) into a standby position dependent on the detected log height procedure (stage B).
  • the end rollers 7, 8 remain in the substantially horizontal position with respect to the infeed belt 1 or the outfeed belt 6.
  • the flaps 2 close and thus center the log S approximately in the middle of the infeed conveyor 1.
  • the end roller 7 of the infeed conveyor 1 is pressed against the log S from below, which slightly raises the log can be. This lifting process is possible due to the straight edges of the flaps 2 in the vertical direction.
  • the saw cut is then made with the chop saw 5 from top to bottom.
  • the end roller 8 of the discharge belt 6 is folded down to enable the sawn-off end of the log to fall unimpeded (stage C).
  • stage D the flaps 2 are only partially opened to allow the logs to be transported further.
  • the flaps 2 are not completely opened to the starting position (stage A) in order to minimize response times.
  • the cross-cut saw 5 has not moved in its initial position (stage A) but in its ready position (stage B).
  • stage E After being clamped again by the clamping device (stage E), a new cut is carried out. If there is only a short trailing end in the clamping device 2, the clamping device 9 can already be activated, the pushed-up end roller 8 serving as a counter bearing.
  • the remaining piece of log S is then transported on (stage F), clamped with the clamping device 9 in cooperation with the end roller 8, and then the last cut is made at the trailing end of the log S.
  • the cross-cut saw device realizes minimal clamping and centering processes with minimal delivery paths without loss of functionality, so that an equally good cross-cutting function can be achieved in a shorter processing time.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Specific Conveyance Elements (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Transplanting Machines (AREA)
EP94114862A 1994-02-03 1994-09-20 Scie à tronçonner de troncs d'arbre Expired - Lifetime EP0666153B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9401780U DE9401780U1 (de) 1994-02-03 1994-02-03 Kappsägevorrichtung für Stammholz
DE9401780U 1994-02-03

Publications (2)

Publication Number Publication Date
EP0666153A1 true EP0666153A1 (fr) 1995-08-09
EP0666153B1 EP0666153B1 (fr) 1997-05-14

Family

ID=6904086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114862A Expired - Lifetime EP0666153B1 (fr) 1994-02-03 1994-09-20 Scie à tronçonner de troncs d'arbre

Country Status (4)

Country Link
EP (1) EP0666153B1 (fr)
AT (1) ATE152953T1 (fr)
DE (2) DE9401780U1 (fr)
DK (1) DK0666153T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623983C2 (de) * 1996-06-15 1998-04-09 Holtec Gmbh & Co Anlagenbau Zu Verfahren zur Steuerung von Sägeschnitten und Kappsägevorrichtung hierfür

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2078424A5 (fr) * 1967-11-20 1971-11-05 Intercont Ferromatic Trust Reg
AT322823B (de) * 1972-09-22 1975-06-10 Friesacher Maschf Einrichtung zum zerteilen langgestreckter stückgüter, insbesondere rundholz
DE2535523A1 (de) * 1975-08-08 1977-02-17 Braun Kg Maschf Einrichtung zum abtrennen von stammabschnitten von einem baumstamm
DE3009663A1 (de) * 1979-03-16 1980-09-25 A Elektroniikka Verfahren zum aufteilen eines langgestreckten gegenstandes, insbesondere eines baumstammes, in gewuenschte laengen
DE8408807U1 (de) * 1984-03-22 1984-05-17 Josef Schilcher Maschinenbau und Landmaschinenhandel, 9833 Rangersdorf Vorrichtung zum Ablängen von Holz
US4907294A (en) * 1988-04-28 1990-03-06 U.S. Natural Resources, Inc. Log scanning system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2078424A5 (fr) * 1967-11-20 1971-11-05 Intercont Ferromatic Trust Reg
AT322823B (de) * 1972-09-22 1975-06-10 Friesacher Maschf Einrichtung zum zerteilen langgestreckter stückgüter, insbesondere rundholz
DE2535523A1 (de) * 1975-08-08 1977-02-17 Braun Kg Maschf Einrichtung zum abtrennen von stammabschnitten von einem baumstamm
DE3009663A1 (de) * 1979-03-16 1980-09-25 A Elektroniikka Verfahren zum aufteilen eines langgestreckten gegenstandes, insbesondere eines baumstammes, in gewuenschte laengen
DE8408807U1 (de) * 1984-03-22 1984-05-17 Josef Schilcher Maschinenbau und Landmaschinenhandel, 9833 Rangersdorf Vorrichtung zum Ablängen von Holz
US4907294A (en) * 1988-04-28 1990-03-06 U.S. Natural Resources, Inc. Log scanning system

Also Published As

Publication number Publication date
DE59402750D1 (de) 1997-06-19
DK0666153T3 (da) 1997-10-13
DE9401780U1 (de) 1994-03-31
EP0666153B1 (fr) 1997-05-14
ATE152953T1 (de) 1997-05-15

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