EP2335892A3 - Riving knife device for a saw unit - Google Patents

Riving knife device for a saw unit Download PDF

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Publication number
EP2335892A3
EP2335892A3 EP10015649.6A EP10015649A EP2335892A3 EP 2335892 A3 EP2335892 A3 EP 2335892A3 EP 10015649 A EP10015649 A EP 10015649A EP 2335892 A3 EP2335892 A3 EP 2335892A3
Authority
EP
European Patent Office
Prior art keywords
splitting
wedges
wedge device
workpieces
sawing
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
EP10015649.6A
Other languages
German (de)
French (fr)
Other versions
EP2335892B8 (en
EP2335892A2 (en
EP2335892B1 (en
Inventor
Dawidziak Albrecht
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.)
Michael Weinig AG
Original Assignee
Michael Weinig AG
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 Michael Weinig AG filed Critical Michael Weinig AG
Priority to SI201031008T priority Critical patent/SI2335892T1/en
Publication of EP2335892A2 publication Critical patent/EP2335892A2/en
Publication of EP2335892A3 publication Critical patent/EP2335892A3/en
Application granted granted Critical
Publication of EP2335892B1 publication Critical patent/EP2335892B1/en
Publication of EP2335892B8 publication Critical patent/EP2335892B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/08—Accessories for keeping open the saw kerf, e.g. riving knives or wedge plates

Abstract

Die Spaltkeilvorrichtung hat übereinander angeordnete Spaltkeile (7), die durch Zwischenleisten voneinander getrennt sind. Die Spaltkeile (7) greifen in Sägenuten einer der Spaltkeilvorrichtung vorgeschalteten Sägeeinheit ein und verhindern, dass der Sägespalt zu eng wird und die jeweilige Sägeeinheit klemmt und nachschneidet. Damit die Spaltkeilvorrichtung bei hohen Vorschubgeschwindigkeiten der zu sägenden Werkstücke (1) zuverlässig arbeitet und der Rüst- und Einstellaufwand minimal sind, sitzen die Spaltkeile (7) an einem Spaltkeilträger (13), der mittels eines Antriebes federnd nachgiebig in der Gebrauchsstellung belastet ist. Die federnde Nachgiebigkeit ermöglicht, dass die Spaltkeile (7) bei Störungen aus dem Sägespalt herausgedrückt werden. Die Spaltkeile (7) können nur geringe Länge haben, so dass die Reibung im Sägespalt gering ist. Die Vorschubgeschwindigkeiten für die Werkstücke (1) können dementsprechend hoch sein. Die Spaltkeilvorrichtung wird bei Maschinen eingesetzt, auf denen die Werkstücke (1) in Lamellen gesägt werden.

Figure imgaf001
The splitting wedge device has splitting wedges (7) arranged one above the other, which are separated from one another by intermediate strips. The splitting wedges (7) engage in saw grooves of a sawing unit connected upstream of the splitting wedge device and prevent the sawing gap from becoming too narrow and the respective sawing unit jamming and cutting. In order for the splitting wedge device to operate reliably at high feed speeds of the workpieces to be sawn (1) and to minimize set-up and adjustment costs, the splitting wedges (7) are seated on a riving knife carrier (13) which is resiliently loaded in the use position by means of a drive. The resilient compliance allows the splitting wedges (7) are pressed out of the saw blade in case of disturbances. The splitting wedges (7) can only have a small length, so that the friction in the sawing gap is low. The feed rates for the workpieces (1) can be correspondingly high. The splitting wedge device is used on machines on which the workpieces (1) are sawed in lamellae.
Figure imgaf001
EP10015649.6A 2009-12-21 2010-12-15 Riving knife device for a saw unit Active EP2335892B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201031008T SI2335892T1 (en) 2009-12-21 2010-12-15 Riving knife device for a saw unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910060787 DE102009060787A1 (en) 2009-12-21 2009-12-21 Splitting wedge device for a saw unit

Publications (4)

Publication Number Publication Date
EP2335892A2 EP2335892A2 (en) 2011-06-22
EP2335892A3 true EP2335892A3 (en) 2013-05-01
EP2335892B1 EP2335892B1 (en) 2015-05-27
EP2335892B8 EP2335892B8 (en) 2015-09-09

Family

ID=43797607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10015649.6A Active EP2335892B8 (en) 2009-12-21 2010-12-15 Riving knife device for a saw unit

Country Status (4)

Country Link
EP (1) EP2335892B8 (en)
DE (1) DE102009060787A1 (en)
SI (1) SI2335892T1 (en)
TW (1) TWI584929B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013102892A1 (en) * 2013-03-21 2014-09-25 Weinmann Holzbausystemtechnik Gmbh sawing
CN109108673A (en) * 2018-07-09 2019-01-01 江苏宁兴恒力智能设备有限公司 A kind of vertical wedge mechanism
CN111940835A (en) * 2019-05-15 2020-11-17 江苏宁兴恒力智能设备有限公司 Self-adjustable vertical wedge block device

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US159999A (en) * 1875-02-23 Improvement in saw-mills
US1273422A (en) * 1917-06-13 1918-07-23 Samuel Martin Taylor Circular-saw machine.
US1356110A (en) * 1919-12-17 1920-10-19 Neal Joseph Alfred Attachment for resawing-machines
US1584796A (en) * 1925-03-05 1926-05-18 Stover Lumber Company Resawing machine
US1602040A (en) * 1925-03-05 1926-10-05 Stover Lumber Company Separating device for resawing machines
DE835528C (en) * 1950-04-19 1952-04-03 Heinz Nienstedt Riving knife for circular saws
US3568738A (en) * 1969-01-17 1971-03-09 Masonite Corp Apparatus for sawing wood to produce smooth rotary planed surfaces
US3772956A (en) * 1970-05-06 1973-11-20 J Mcmillan Edger saw guide plug
US3828635A (en) * 1973-05-23 1974-08-13 L Smith Sawmill with adjustable guides and spreaders
DE3030602A1 (en) * 1980-08-13 1982-02-18 Maschinenfabrik Esterer AG, 8262 Altötting Circular saw trunk main and by=product separator - has units determining min. reference line distance and positioning wedge
DE19828749A1 (en) * 1997-08-26 1999-03-04 Schelling Anlagenbau Gmbh Under floor sawing machine
US6164349A (en) * 1999-08-18 2000-12-26 Hsieh; Richard Machine for cutting plates from timber
US20060096428A1 (en) * 2003-03-14 2006-05-11 Garcia Jaime E Riving knife assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5755148A (en) * 1995-07-07 1998-05-26 Black & Decker Inc. Adjustable fence for a compound miter saw
CN2420112Y (en) * 2000-04-30 2001-02-21 青岛千川木业设备有限公司 Saw frame mechanism for thin sheet frame sawing machine
DE50207886D1 (en) * 2001-12-21 2006-09-28 Bosch Gmbh Robert CIRCULAR SAW MACHINE
EP2018921B1 (en) * 2007-07-26 2010-12-22 Black & Decker, Inc. Anti-kick device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US159999A (en) * 1875-02-23 Improvement in saw-mills
US1273422A (en) * 1917-06-13 1918-07-23 Samuel Martin Taylor Circular-saw machine.
US1356110A (en) * 1919-12-17 1920-10-19 Neal Joseph Alfred Attachment for resawing-machines
US1584796A (en) * 1925-03-05 1926-05-18 Stover Lumber Company Resawing machine
US1602040A (en) * 1925-03-05 1926-10-05 Stover Lumber Company Separating device for resawing machines
DE835528C (en) * 1950-04-19 1952-04-03 Heinz Nienstedt Riving knife for circular saws
US3568738A (en) * 1969-01-17 1971-03-09 Masonite Corp Apparatus for sawing wood to produce smooth rotary planed surfaces
US3772956A (en) * 1970-05-06 1973-11-20 J Mcmillan Edger saw guide plug
US3828635A (en) * 1973-05-23 1974-08-13 L Smith Sawmill with adjustable guides and spreaders
DE3030602A1 (en) * 1980-08-13 1982-02-18 Maschinenfabrik Esterer AG, 8262 Altötting Circular saw trunk main and by=product separator - has units determining min. reference line distance and positioning wedge
DE19828749A1 (en) * 1997-08-26 1999-03-04 Schelling Anlagenbau Gmbh Under floor sawing machine
US6164349A (en) * 1999-08-18 2000-12-26 Hsieh; Richard Machine for cutting plates from timber
US20060096428A1 (en) * 2003-03-14 2006-05-11 Garcia Jaime E Riving knife assembly

Also Published As

Publication number Publication date
EP2335892B8 (en) 2015-09-09
EP2335892A2 (en) 2011-06-22
SI2335892T1 (en) 2015-10-30
TWI584929B (en) 2017-06-01
EP2335892B1 (en) 2015-05-27
DE102009060787A1 (en) 2011-06-22
TW201134632A (en) 2011-10-16

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