EP0796707A2 - Verfahren und Vorrichtung zum Zuführen eines Werkstückes an eine Kreissägemaschine - Google Patents

Verfahren und Vorrichtung zum Zuführen eines Werkstückes an eine Kreissägemaschine Download PDF

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Publication number
EP0796707A2
EP0796707A2 EP97104830A EP97104830A EP0796707A2 EP 0796707 A2 EP0796707 A2 EP 0796707A2 EP 97104830 A EP97104830 A EP 97104830A EP 97104830 A EP97104830 A EP 97104830A EP 0796707 A2 EP0796707 A2 EP 0796707A2
Authority
EP
European Patent Office
Prior art keywords
cleat
cutting
blade
push
board
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
EP97104830A
Other languages
English (en)
French (fr)
Other versions
EP0796707B1 (de
EP0796707A3 (de
Inventor
Eugenio Zilio
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.)
La Falegnameria Sas Di Zilio Eugenio & C
Original Assignee
La Falegnameria Sas Di Zilio Eugenio & C
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 La Falegnameria Sas Di Zilio Eugenio & C filed Critical La Falegnameria Sas Di Zilio Eugenio & C
Publication of EP0796707A2 publication Critical patent/EP0796707A2/de
Publication of EP0796707A3 publication Critical patent/EP0796707A3/de
Application granted granted Critical
Publication of EP0796707B1 publication Critical patent/EP0796707B1/de
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
    • B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees

Definitions

  • the present invention relates to a device and a method intended to ensure the thrust, against the cutting blade of a circular sawing machine, of a piece to be cut, according to the preamble of claim 1.
  • the cutting operation consists, for the operator, in pressing the piece of wood to be cut, designated in the following under the term of "board”, on the cast iron plate, then pushing said board against the rotating blade, which has the effect of dividing it into two parts along a rectilinear section line.
  • a disadvantage which manifests itself when using a circular sawing machine to cut a board into two pieces, is constituted by the risk of injury which the operator can undergo when the board is about to be completely cut, since the rotating blade then comes close to the operator's hand which pushes and, at the end of the operation, when said operator must move the cut piece away from said blade.
  • the main object of the present invention is to provide a device which can replace the manual operation of pushing the piece or board to be cut in the final phase of the cutting operation and which, in addition, can keep the cut part of the board away from the rotating blade.
  • the drive of the device according to the invention is fully automatic, so that the operator only has the sole task of pushing the cutting board to a safe distance from the cutting area, avoiding thus any risk of possible accident for the operator and leaving the aforementioned device the task of completing the operation.
  • the aforementioned device is defined in claim 1.
  • it comprises a cleat which, when the rear end of the board which is subjected to the cutting operation crosses a predetermined limit, comes into contact with said board and continues the thrust thereof against the rotating blade, replacing, in this way, the pushing action which, to date, was provided manually by the operator.
  • the pushing action resulting from the rectilinear movement of the cleat continues beyond the cutting blade, so as to move the two parts of the work area the board which are obtained after the cutting operation and consequently facilitate the removal of these parts by the operator, who can operate under the conditions of maximum security.
  • the push-button cleat partially backs up, waiting for a new positioning to push the next cutting board.
  • the impulse for driving the push stopper is controlled by a photoelectric cell, which detects the moment when the rear end of the work board crosses a predetermined limit, located near and upstream of the rotating blade, so that the operator can interrupt his manual pushing action, which is replaced by the fully automatic pushing action of said cleat.
  • the push stopper is articulated on a structure which is anchored on the cast iron plate of the machine and which also acts as a lateral abutment for the cutting board.
  • Guides are provided on the machine structure for adjusting the height of the cleat, in order to adapt it to the different thicknesses of the boards to be cut, as well as means and guides used to carry out the alternating linear movement of this cleat.
  • An idler roller is advantageously provided on the structure, placed in front of the push cleat and having the function of keeping the part of the working board pressed against the cast iron plate.
  • the invention also relates to a method for the implementation of the thrust device described above.
  • the piece of wood to be cut 1 constituted by a board, is placed on the cast iron plate 2 of the circular sawing machine, above which projects the circular segment 3 of the rotating blade 4.
  • the cleat 5 is mounted by means of a pivot 6 on a stirrup 7 driven by an alternative translational movement.
  • an arm 8 On the stirrup 7, at a point located in front of the cleat 5, is articulated an arm 8, provided with an idler roller 9 which, thanks to a return spring 10, keeps the board 1 pressed against the plate 2 during the cutting operation of this board.
  • a protector 11 is also fixed to the stirrup 7, in a front position relative to the cleat 5, this protector being articulated on an axis 12 and having its lower end in line with the maximum projection of the circular segment 3.
  • a stop 14 plays the role of lateral support for the plate 1 and, at the same time, also defines the width of the part to be cut, which corresponds to the space between said stop and the projecting blade.
  • a photoelectric cell 15 which detects the passage of the board 1 and, consequently, determines the location of the cleat 5, in accordance with the methods described below.
  • the angular displacement of the cleat 5 and of the protector 11 on their respective axes 6 and 12 is detected by sensors 16 and 17 respectively placed near the aforementioned elements.
  • the vertical bracket 7 is fixed in different positions to adapt the cleat 5 to the different thicknesses of the boards to be cut 1, on a horizontal crosspiece 18 which is in turn supported by an underlying element 19, which rests on the plate cast iron 1 and can be positioned differently depending on the width of the part 20 which is to be cut from the board 11.
  • a pneumatic cylinder 21 which has the function of carrying out the reciprocating rectilinear displacement of the horizontal crosspiece 18 capable of sliding on a guide 22 and, consequently, the reciprocating rectilinear displacement of the push-button 5.
  • the device During this first phase of manual pushing of the board 1, the device remains entirely stopped and, in particular, the cleat 5, by turning on its axis 6, lifts to let pass the said board located below (see Fig. 3) .
  • the change in position of the cleat 5, from the inclined orientation to the vertical orientation, is detected by the sensor 16, which sends a pulse to the control circuit which causes the reversing of the stroke of the jack. tire 21, with the final consequence of obtaining the reversal of the direction of advance of the rectilinear movement of the cleat, which, consequently, firstly bears against the rear face 23 and then pushes the board 1 against the blade rotating 4, thereby replacing the manual action of the operator (see Fig. 1 and 5).
EP97104830A 1996-03-22 1997-03-21 Verfahren und Vorrichtung zum Zuführen eines Werkstückes an eine Kreissägemaschine Expired - Lifetime EP0796707B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96VI000041A IT1291085B1 (it) 1996-03-22 1996-03-22 Dispositivo di sicurezza per la spinta della tavola da tagliare in una segatrice a disco
ITVI960041 1996-03-22

Publications (3)

Publication Number Publication Date
EP0796707A2 true EP0796707A2 (de) 1997-09-24
EP0796707A3 EP0796707A3 (de) 1999-07-28
EP0796707B1 EP0796707B1 (de) 2004-07-21

Family

ID=11425996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104830A Expired - Lifetime EP0796707B1 (de) 1996-03-22 1997-03-21 Verfahren und Vorrichtung zum Zuführen eines Werkstückes an eine Kreissägemaschine

Country Status (3)

Country Link
EP (1) EP0796707B1 (de)
DE (1) DE69729903D1 (de)
IT (1) IT1291085B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102909759A (zh) * 2012-11-12 2013-02-06 许小杨 一种开片机送料结构
CN103140330A (zh) * 2010-10-04 2013-06-05 罗伯特·博世有限公司 工件导向装置
CN108908490A (zh) * 2018-08-03 2018-11-30 福建长汀县元创木工机械有限公司 一种木托盘脚墩自动成型机
CN110050663A (zh) * 2019-05-22 2019-07-26 邹冬田 一种咬合推送的杉树原木切断分离一体机
DE102018132101A1 (de) * 2018-12-13 2020-06-18 Weinmann Holzbausystemtechnik Gmbh Sägeeinrichtung
CN112045779A (zh) * 2020-08-06 2020-12-08 许天长 一种家庭装修小木料切割的设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104476624A (zh) * 2014-12-05 2015-04-01 李孟军 多片出条机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185254A (en) * 1921-06-20 1922-09-07 William Lawes Cole Improvements in and relating to saw benches
US1798570A (en) * 1930-06-30 1931-03-31 Indianapolis Wire Bound Box Co Feeder for woodworking machines
US3880032A (en) * 1973-08-22 1975-04-29 Dwight C Green Feeler operated saw guard
US4603612A (en) * 1984-12-17 1986-08-05 Atkins Richard R Safety attachment for a table saw

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185254A (en) * 1921-06-20 1922-09-07 William Lawes Cole Improvements in and relating to saw benches
US1798570A (en) * 1930-06-30 1931-03-31 Indianapolis Wire Bound Box Co Feeder for woodworking machines
US3880032A (en) * 1973-08-22 1975-04-29 Dwight C Green Feeler operated saw guard
US4603612A (en) * 1984-12-17 1986-08-05 Atkins Richard R Safety attachment for a table saw

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103140330A (zh) * 2010-10-04 2013-06-05 罗伯特·博世有限公司 工件导向装置
CN102909759A (zh) * 2012-11-12 2013-02-06 许小杨 一种开片机送料结构
CN102909759B (zh) * 2012-11-12 2014-06-11 许小杨 一种开片机送料结构
CN108908490A (zh) * 2018-08-03 2018-11-30 福建长汀县元创木工机械有限公司 一种木托盘脚墩自动成型机
DE102018132101A1 (de) * 2018-12-13 2020-06-18 Weinmann Holzbausystemtechnik Gmbh Sägeeinrichtung
US11717983B2 (en) 2018-12-13 2023-08-08 Weinmann Holzbausystemtechnik Gmbh Sawing device
CN110050663A (zh) * 2019-05-22 2019-07-26 邹冬田 一种咬合推送的杉树原木切断分离一体机
CN112045779A (zh) * 2020-08-06 2020-12-08 许天长 一种家庭装修小木料切割的设备
CN112045779B (zh) * 2020-08-06 2022-05-24 许天长 一种家庭装修小木料切割的设备

Also Published As

Publication number Publication date
ITVI960041A0 (de) 1996-03-22
ITVI960041A1 (it) 1997-09-22
EP0796707B1 (de) 2004-07-21
IT1291085B1 (it) 1998-12-14
DE69729903D1 (de) 2004-08-26
EP0796707A3 (de) 1999-07-28

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