EP0908280A1 - Log carriage for sawing machine - Google Patents

Log carriage for sawing machine Download PDF

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Publication number
EP0908280A1
EP0908280A1 EP98118825A EP98118825A EP0908280A1 EP 0908280 A1 EP0908280 A1 EP 0908280A1 EP 98118825 A EP98118825 A EP 98118825A EP 98118825 A EP98118825 A EP 98118825A EP 0908280 A1 EP0908280 A1 EP 0908280A1
Authority
EP
European Patent Office
Prior art keywords
log
fixed
turntable
carrier
log carrier
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Withdrawn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
EP98118825A
Other languages
German (de)
French (fr)
Inventor
Antonio Capuzzi
Roberto Galli
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.)
Bongioanni Legno Srl
Original Assignee
Bongioanni Legno Srl
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 Bongioanni Legno Srl filed Critical Bongioanni Legno Srl
Publication of EP0908280A1 publication Critical patent/EP0908280A1/en
Withdrawn legal-status Critical Current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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B29/00—Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines; Travelling trunk or log carriages
    • B27B29/08—Trunk or log carriages with gripping means designed to pass the saw blade(s), especially for band saws; Arrangement of gripping accessories thereon; Turning devices thereon

Definitions

  • the present invention concerns a log carrier for a log cutter and, more precisely, it concerns a log carrier having pivoting alignment.
  • the object of the present invention is to provide a log carrier in which the alignment system and that for the horizontal and vertical positioning of the log are integrated, thus limiting the preparation time by utilising a single positioning axis.
  • the present invention achieves the aforesaid objects with a log carrier having the characteristics specifically referred to in the following claims.
  • the reference numeral 1 generally indicates a log carrier according to the invention.
  • a log T to be cut into planks by a saw, not shown, is carried by the log carrier 1 in a fixed position with respect to the carrier 1 and with a cutting plane indicated 3.
  • the log T is held securely in the log carrier 1 by locator frames 4 and associated upper and lower gripper hooks 5, 5' fixed to a beam 2.
  • the upper and lower gripper hooks 5, 5' can be retracted to a plurality of positions by means of associated hydraulic pistons 6, and have the possibility of being adjusted in height.
  • the beam 2 is fixed to the rotatable part 7 of a load-bearing turntable 8, the fixed part 12 of which is fixed to a carriage, known and for simplicity not described, that enables the beam 2 and the turntable 8 to move transversely in the directions indicated by the arrows in Figure 1.
  • the assembly of the beam 2 and the turntable 8 is moved by an actuator 13, for example a hydraulic or electromechanical actuator, using means that are known and, for simplicity, not described.
  • a double hydraulic piston 9 is rotatably attached at its first end 10 to the beam 2, and rotatably attached at its second end to the fixed part 12 of the turntable 8.
  • the log T is positioned and secured in the log carrier 1 by the locator frames 4 and the associated gripper hooks 5 and 5'.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Pinball Game Machines (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

A log carrier (1) includes a supporting beam (2) fixed to the rotatable part (7) of a turntable (8), the fixed part (12) of which is fixed to the log carrier (1). The rotatable part (7) is rotated by a double piston (9) having a first end (11) rotatably fixed to the fixed part (12) of the turntable (8), and the other end (10) rotatably fixed to the supporting beam (2). Upper and lower (5, 5') gripper hooks are adjustable in height.

Description

  • The present invention concerns a log carrier for a log cutter and, more precisely, it concerns a log carrier having pivoting alignment.
  • Circular, conical or half logs, as well as very thick planks, need to be aligned perfectly on the log carrier in order to optimise the sawing operation.
  • According to the prior art, various systems are used to align the log, or thick planks, which necessitate various adjustment manipulations assisted by hooks or catches, with a consequent loss of time, or which use various arms that move independently but which are more expensive.
  • The object of the present invention is to provide a log carrier in which the alignment system and that for the horizontal and vertical positioning of the log are integrated, thus limiting the preparation time by utilising a single positioning axis. The present invention achieves the aforesaid objects with a log carrier having the characteristics specifically referred to in the following claims.
  • The invention will now be described with reference to the accompanying drawings provided by way of non-limitative example, in which:
    • Figure 1 is a plan view of a log carrier according to the invention;
    • Figures 2 and 3 are partial views of the log carrier of Figure 1 in two different working positions; and
    • Figure 4 is a schematic partial side view of the log carrier according to the invention.
  • With reference to the drawings, the reference numeral 1 generally indicates a log carrier according to the invention.
  • A log T to be cut into planks by a saw, not shown, is carried by the log carrier 1 in a fixed position with respect to the carrier 1 and with a cutting plane indicated 3.
  • The log T is held securely in the log carrier 1 by locator frames 4 and associated upper and lower gripper hooks 5, 5' fixed to a beam 2.
  • The upper and lower gripper hooks 5, 5' can be retracted to a plurality of positions by means of associated hydraulic pistons 6, and have the possibility of being adjusted in height.
  • The beam 2 is fixed to the rotatable part 7 of a load-bearing turntable 8, the fixed part 12 of which is fixed to a carriage, known and for simplicity not described, that enables the beam 2 and the turntable 8 to move transversely in the directions indicated by the arrows in Figure 1. The assembly of the beam 2 and the turntable 8 is moved by an actuator 13, for example a hydraulic or electromechanical actuator, using means that are known and, for simplicity, not described.
  • A double hydraulic piston 9 is rotatably attached at its first end 10 to the beam 2, and rotatably attached at its second end to the fixed part 12 of the turntable 8.
  • In use, the log T is positioned and secured in the log carrier 1 by the locator frames 4 and the associated gripper hooks 5 and 5'.
  • By shortening or lengthening the double hydraulic piston 9, the rotatable part 7 of the turntable 8 is rotated in one direction or the other (see Figure 2 or Figure 3) until the log T is in optimal alignment with the cutting plane 3.
  • Naturally, the principle of the invention remaining the same, the details of construction and the embodiments can be widely varied with respect to that described and illustrated without by this departing from the ambit of the present invention.

Claims (5)

  1. A log carrier (1) for a log cutter including a beam (2), having locator frames (4) and pairs of upper and lower gripper hooks (5, 5'), which secure the log, (T) while it is being worked, mounted on the said beam (2), characterised in that the said beam (2) is fixed to the rotatable part (7) of a turntable (8) the fixed part (12) of which is fixed to a transversely movable carriage that is moved by an actuator (13).
  2. A log carrier (1) according to Claim 1, characterised in that the rotatable part (7) of the turntable (8) is rotated in two directions by a thrust element (9), the first (11) and second (10) ends of which are rotatably fixed to the fixed part (12) of the turntable (8) and the supporting beam (2), respectively.
  3. A log carrier (1) according to Claim 2, characterised in that the said thrust element (9) comprises two counterposed hydraulic pistons.
  4. A log carrier (1) according to any preceding claim, characterised in that the said upper and lower gripper hooks (5, 5') are retractable under the action of hydraulic pistons (6), and their height is adjustable.
  5. All substantially as described and illustrated and for the specified objects.
EP98118825A 1997-10-06 1998-10-06 Log carriage for sawing machine Withdrawn EP0908280A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000886 IT1295474B1 (en) 1997-10-06 1997-10-06 LOG CARRIAGE FOR LOG SAWING MACHINE.
ITTO970886 1997-10-06

Publications (1)

Publication Number Publication Date
EP0908280A1 true EP0908280A1 (en) 1999-04-14

Family

ID=11416054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118825A Withdrawn EP0908280A1 (en) 1997-10-06 1998-10-06 Log carriage for sawing machine

Country Status (2)

Country Link
EP (1) EP0908280A1 (en)
IT (1) IT1295474B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1787775A1 (en) * 2005-11-18 2007-05-23 Tähkä OY Roller for laterally guiding a log onto a longitudinal conveyer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8700436U1 (en) * 1987-01-10 1987-04-23 Maschinenfabrik Bernhard Braun Gmbh & Co Kg, 7292 Baiersbronn, De
US5243888A (en) * 1991-09-17 1993-09-14 Bowlin William P Pivoting carriage and saw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8700436U1 (en) * 1987-01-10 1987-04-23 Maschinenfabrik Bernhard Braun Gmbh & Co Kg, 7292 Baiersbronn, De
US5243888A (en) * 1991-09-17 1993-09-14 Bowlin William P Pivoting carriage and saw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1787775A1 (en) * 2005-11-18 2007-05-23 Tähkä OY Roller for laterally guiding a log onto a longitudinal conveyer

Also Published As

Publication number Publication date
IT1295474B1 (en) 1999-05-12
ITTO970886A1 (en) 1999-04-06

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