EP3074195A1 - Cutting blade edge of a cutting and splitting device - Google Patents

Cutting blade edge of a cutting and splitting device

Info

Publication number
EP3074195A1
EP3074195A1 EP14864448.7A EP14864448A EP3074195A1 EP 3074195 A1 EP3074195 A1 EP 3074195A1 EP 14864448 A EP14864448 A EP 14864448A EP 3074195 A1 EP3074195 A1 EP 3074195A1
Authority
EP
European Patent Office
Prior art keywords
cutting
gap
edge
cleaning element
plate
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Withdrawn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
EP14864448.7A
Other languages
German (de)
French (fr)
Other versions
EP3074195A4 (en
Inventor
Tarmo Pitkäniemi
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.)
Agromaster Oy
Original Assignee
Agromaster Oy
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 Agromaster Oy filed Critical Agromaster Oy
Publication of EP3074195A1 publication Critical patent/EP3074195A1/en
Publication of EP3074195A4 publication Critical patent/EP3074195A4/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B27L7/06—Arrangements for splitting wood using wedges, knives or spreaders
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/099—Auxiliary devices, e.g. felling wedges

Definitions

  • the invention relates to a cutting blade edge of a cutting and splitting device according to the preamble of claim 1.
  • the shearing In shearing, guillotine-type cutting and splitting de- vices the shearing can be provided just against a stopper surface or deeper, i.e. so as to cross the stopper surface or a counterblade . A good and reliable cutting result is reached only by crossed shearing.
  • the blade can thus be kept even and straight, as the stopper surface is formed by two parts between which there is a gap into which the blade penetrates.
  • the blade pushes some cutting waste ahead of it into the gap, which becomes caked and hardened on the gap walls under intensive pres- sure.
  • the gap eventually closes up and prevents the movement of the cutting blade. Since the blade must above all be sharp and this way easily and well cutting, no elements that would clear the gap and push waste material ahead of them can be used in this area of the blade.
  • the objective of the invention is to remedy the above- mentioned defects of the prior art. Specifically, the objective of the invention is to disclose a solution that allows, during guillotine-type cutting of a log, the gap that is opposite the blade to be kept clean.
  • the cutting blade edge of a cutting and splitting device comprises a planar cutting plate, one edge of which constitutes a cutting edge for shearing wood, and a support stopper with two support surfaces and between them a gap into which the cutting edge of the cutting plate finally penetrates after cutting a log supported against the support surfaces.
  • the blade edge comprises a cleaning element that is movable in the gap between the support surfaces, i.e. a suitable pusher structure arranged to retract from the way of the cutting edge as the cutting edge penetrates into the gap, and as the cutting edge retracts, to return into the gap so as to push out any impurities caught in the gap.
  • the cleaning element is suitably a plate-type structure, a pusher or a scraper, which thicknesswise and also widthwise substantially corresponds to the gap between the support surfaces so that, as it moves in the gap, it pushes ahead of it any waste material caught therein so as to eject it.
  • the cutting plate and the cleaning element consist of a common plate.
  • the opening can be for example rec- tangular, in which case in the direction of movement of the cutting plate one of the opposite edges is sharpened, and the other is a straight-edged pusher structure.
  • the movement of the cutting plate is dimensioned in such a way that, during log cutting, the cutting blade extends to a sufficient de- gree into the gap between the support surfaces and, in the opposite direction, the edge that clears the gap moves up to the level of the support surfaces.
  • the cleaning plate comprises a spring press arranged to press the cleaning element in the direction of cleaning of the gap and to yield as the cutting blade presses against it.
  • the cutting blade and the cleaning plate are separate pieces and the cleaning plate and the edge thereof move only to the degree they are pressed into the gap by the cutting blade, the free rest position thereof being at the level of the support surfaces.
  • the separate cleaning plate and cutting plate are mechanically coupled to each other. The coupling is made for example with suitable lever structures so that they move substantially simultaneously and in the same direction. This way, the edge that clears the gap always retracts as the blade penetrates into the gap between the support surfaces.
  • the cutting blade edge of a cutting and splitting device according to the invention has considerable advantages over the prior art.
  • the invention provides for a simple and reliable blade edge by which the blade can be supported and kept straight while the gaps that support the blade can be kept clear of impurities produced during cutting of a log.
  • Fig. 1 illustrates a first embodiment of the invention
  • Fig. 2 illustrates a second embodiment of the invention
  • Fig. 3 illustrates a third embodiment of the inven- tion
  • Fig. 4 illustrates a first stage of use of the embodiment of Fig. 1,
  • Fig. 5 illustrates a second stage of use of the embodiment of Fig. 1 and
  • Fig. 6 illustrates a third stage of use of the embodiment of Fig. 1.
  • Fig. 1 illustrates a first cutting plate 1 used for the cutting blade edge of a cutting and splitting device according to the invention and formed by a rectangular plate with a central rectangular opening 12.
  • a sharp cutting edge 4 for shearing at one edge of the opening 12 there is a sharp cutting edge 4 for shearing and at the opposite end of the opening 12 there is a cleaning element 9 which is formed by the straight and blunt front edge 13 of the edge of the opening as such.
  • a cutting plate 2 provided with a cutting edge is a plate that is separate from a second plate that functions as a cleaning element 10.
  • the cleaning element 13 comprises a spring press 14, due to which the cleaning element 10, under pressure exerted by the cutting plate 2, is withdrawn from the way but returns by the effect of the spring and pushes ahead of it by its front edge 13 any waste material the cutting plate may have pushed into the gap between the support surfaces.
  • the separate cutting plate 3 provided with the cutting edge 4 and plate- type cleaning element 11 are coupled to each other with a lever structure 15 so that they are constantly equally distant from each other.
  • the cleaning element 11 moves in the gap between the support surfaces so that it pushes out any waste material that may have been caught therein.
  • Fig. 4-6 more specifically show as a side view the operation of the cutting plate according to Fig.
  • a log 8 that is being cut can be fed from the opening 12 to a cutting position.
  • the log rests against a support stopper 5, i.e. two support surfaces 6, the front edge of the plate-type cleaning element 9 being level with the support surfaces 6 in the gap between the support surfaces.
  • the cleaning element 9 retracts at the same time on the opposite side of the log far- ther away from the gap 7.
  • the gap becomes empty and, after the log 8 has been cut, the cutting edge 4 is able to penetrate to a degree into the gap between the support surfaces 6. This ensures the complete cutting of the piece of log so that it does not stay hanging from the rest of the log.
  • the cutting edge 4 often pushes ahead of it into the gap waste material which, due to the wedge-shaped blade and being fresh and/or resinous, easily sticks and presses on the edges of the gap.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention relates to a cutting blade edge of a cutting and splitting device. The blade edge comprises a planar cutting plate (1,2,3), one edge of which constitutes a cutting edge (4) for shearing wood, and a support stopper (5) with two support surfaces (6) and between them a gap (7) into which the cutting edge of the cutting plate finally penetrates after cutting a log (8) supported against the support surfaces. According to the invention, the blade edge comprises a cleaning element (9,10,11) movable in the gap (7) between the support surfaces (6) and arranged to retract from the way of the cutting edge (4) as the cutting edge penetrates into the gap and, as the cutting edge retracts, to return into the gap so as to push out any impurities caught in the gap.

Description

CUTTING BLADE EDGE OF A CUTTING AND SPLITTING DEVICE FIELD OF THE INVENTION
The invention relates to a cutting blade edge of a cutting and splitting device according to the preamble of claim 1.
BACKGROUND OF THE INVENTION
In shearing, guillotine-type cutting and splitting de- vices the shearing can be provided just against a stopper surface or deeper, i.e. so as to cross the stopper surface or a counterblade . A good and reliable cutting result is reached only by crossed shearing. The blade can thus be kept even and straight, as the stopper surface is formed by two parts between which there is a gap into which the blade penetrates. However, in the cutting stage the blade pushes some cutting waste ahead of it into the gap, which becomes caked and hardened on the gap walls under intensive pres- sure. Thus, the gap eventually closes up and prevents the movement of the cutting blade. Since the blade must above all be sharp and this way easily and well cutting, no elements that would clear the gap and push waste material ahead of them can be used in this area of the blade.
OBJECTIVE OF THE INVENTION
The objective of the invention is to remedy the above- mentioned defects of the prior art. Specifically, the objective of the invention is to disclose a solution that allows, during guillotine-type cutting of a log, the gap that is opposite the blade to be kept clean.
SUMMARY OF THE INVENTION The cutting blade edge of a cutting and splitting device according to the invention comprises a planar cutting plate, one edge of which constitutes a cutting edge for shearing wood, and a support stopper with two support surfaces and between them a gap into which the cutting edge of the cutting plate finally penetrates after cutting a log supported against the support surfaces. According to the invention, the blade edge comprises a cleaning element that is movable in the gap between the support surfaces, i.e. a suitable pusher structure arranged to retract from the way of the cutting edge as the cutting edge penetrates into the gap, and as the cutting edge retracts, to return into the gap so as to push out any impurities caught in the gap.
The cleaning element is suitably a plate-type structure, a pusher or a scraper, which thicknesswise and also widthwise substantially corresponds to the gap between the support surfaces so that, as it moves in the gap, it pushes ahead of it any waste material caught therein so as to eject it.
In one embodiment of the invention the cutting plate and the cleaning element consist of a common plate. Approximately at the center of the plate there is an opening, the opposite edges of which constitute the cutting edge for shearing and the front edge of the cleaning element. The opening can be for example rec- tangular, in which case in the direction of movement of the cutting plate one of the opposite edges is sharpened, and the other is a straight-edged pusher structure. This way, as the blade penetrates between the support surfaces it takes therein impurities which are then, : as the blade retracts backwards, pushed out from the gap by the opposite straight edge of the opening. In this case, the movement of the cutting plate is dimensioned in such a way that, during log cutting, the cutting blade extends to a sufficient de- gree into the gap between the support surfaces and, in the opposite direction, the edge that clears the gap moves up to the level of the support surfaces.
In a second embodiment of the invention the cleaning plate comprises a spring press arranged to press the cleaning element in the direction of cleaning of the gap and to yield as the cutting blade presses against it. In this case, the cutting blade and the cleaning plate are separate pieces and the cleaning plate and the edge thereof move only to the degree they are pressed into the gap by the cutting blade, the free rest position thereof being at the level of the support surfaces. In a third embodiment of the invention the separate cleaning plate and cutting plate are mechanically coupled to each other. The coupling is made for example with suitable lever structures so that they move substantially simultaneously and in the same direction. This way, the edge that clears the gap always retracts as the blade penetrates into the gap between the support surfaces.
ADVANTAGES PROVIDED BY THE INVENTION
The cutting blade edge of a cutting and splitting device according to the invention has considerable advantages over the prior art. The invention provides for a simple and reliable blade edge by which the blade can be supported and kept straight while the gaps that support the blade can be kept clear of impurities produced during cutting of a log. BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in detail below with reference to the accompanying drawings, in which
Fig. 1 illustrates a first embodiment of the invention,
Fig. 2 illustrates a second embodiment of the invention,
Fig. 3 illustrates a third embodiment of the inven- tion,
Fig. 4 illustrates a first stage of use of the embodiment of Fig. 1,
Fig. 5 illustrates a second stage of use of the embodiment of Fig. 1 and
Fig. 6 illustrates a third stage of use of the embodiment of Fig. 1.
DETAILED DESCRIPTION OF THE INVENTION
Fig. 1 illustrates a first cutting plate 1 used for the cutting blade edge of a cutting and splitting device according to the invention and formed by a rectangular plate with a central rectangular opening 12. In the direction of the shearing movement of the plate, at one edge of the opening 12 there is a sharp cutting edge 4 for shearing and at the opposite end of the opening 12 there is a cleaning element 9 which is formed by the straight and blunt front edge 13 of the edge of the opening as such. In a second embodiment of Fig. 2 a cutting plate 2 provided with a cutting edge is a plate that is separate from a second plate that functions as a cleaning element 10. The cleaning element 13 comprises a spring press 14, due to which the cleaning element 10, under pressure exerted by the cutting plate 2, is withdrawn from the way but returns by the effect of the spring and pushes ahead of it by its front edge 13 any waste material the cutting plate may have pushed into the gap between the support surfaces. In a third embodiment of Fig. 3 the separate cutting plate 3 provided with the cutting edge 4 and plate- type cleaning element 11 are coupled to each other with a lever structure 15 so that they are constantly equally distant from each other. Thus, as the cutting plate returns after cutting to its initial position the cleaning element 11 moves in the gap between the support surfaces so that it pushes out any waste material that may have been caught therein. Fig. 4-6 more specifically show as a side view the operation of the cutting plate according to Fig. 1 in a shearing-type cutting and splitting device. When the cutting plate 1 is provided in the initial position, a log 8 that is being cut can be fed from the opening 12 to a cutting position. At this point, the log rests against a support stopper 5, i.e. two support surfaces 6, the front edge of the plate-type cleaning element 9 being level with the support surfaces 6 in the gap between the support surfaces.
As pushing of the cutting plate begins in the direction of the arrow 16 so that the cutting edge 4 penetrates into the log 8, the cleaning element 9 retracts at the same time on the opposite side of the log far- ther away from the gap 7. Thus, the gap becomes empty and, after the log 8 has been cut, the cutting edge 4 is able to penetrate to a degree into the gap between the support surfaces 6. This ensures the complete cutting of the piece of log so that it does not stay hanging from the rest of the log. However, while penetrating into the gap 7 the cutting edge 4 often pushes ahead of it into the gap waste material which, due to the wedge-shaped blade and being fresh and/or resinous, easily sticks and presses on the edges of the gap. However, this does not become a problem because, as the cutting plate 1 returns in the direction of the arrow 17 back to its initial position after cutting, the plate-type cleaning element 9 that is approximately equally thick as the gap 7 pushes the gap clear of impurities and, as it extends up to the level of the support surfaces 6, drops out the waste material.
The invention has been described above by way of example with reference to the accompanying drawings without in any way limiting the invention only to the structures described above. Different embodiments of the invention are possible within the scope defined by the claims.

Claims

1. A cutting blade edge of a cutting and splitting device comprising
- a planar cutting plate (1,2,3), one edge of which constitutes a cutting edge (4) for shearing wood and
- a support stopper (5) with two support surfaces (6) and between them a gap (7) into which the cutting edge of the cutting plate finally penetrates after cutting a log (8) supported against the support surfaces, characteri zed in that the blade edge comprises a cleaning element (9,10,11) movable in the gap (7) between the support surfaces (6) and arranged to retract from the way of the cutting edge as the cutting edge penetrates into the gap and, as the cutting edge retracts, to return into the gap so as to push out any impurities caught in the gap.
2. The blade edge according to claim 1, charac- teri zed in that the cutting plate (1) and the cleaning element (9) consist of a common plate comprising an opening (12), the opposite edges of which constitute the cutting edge (4) for shearing and the front edge (13) of the cleaning element (9) .
3. The blade edge according to claim 1, characteri zed in that the cleaning element (10) comprises a spring press (14) arranged to press the cleaning element (10) in the direction of clearing of the gap and to yield as the cutting blade presses against it.
4. The blade edge according to claim 1, characteri zed in that the separate cleaning element (11) and cutting plate (3) are mechanically coupled to each other with a lever structure (15) to provide their movement in the same direction and substantially at the same time.
5. The blade edge according to any one of claims 1-4, characteri zed in that the cleaning element (9,10,11) is a plate-type pusher or scraper that is substantially equally wide and thick as the gap ( 7 ) and that, while moving in the gap, pushes ahead of it any impurities caught in the gap so as to eject them.
EP14864448.7A 2013-11-25 2014-11-24 Cutting blade edge of a cutting and splitting device Withdrawn EP3074195A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20136175A FI20136175L (en) 2013-11-25 2013-11-25 THE CUTTING BLADE STRUCTURE OF THE SPARK MACHINE
PCT/FI2014/050899 WO2015075321A1 (en) 2013-11-25 2014-11-24 Cutting blade edge of a cutting and splitting device

Publications (2)

Publication Number Publication Date
EP3074195A1 true EP3074195A1 (en) 2016-10-05
EP3074195A4 EP3074195A4 (en) 2017-04-26

Family

ID=53179021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14864448.7A Withdrawn EP3074195A4 (en) 2013-11-25 2014-11-24 Cutting blade edge of a cutting and splitting device

Country Status (3)

Country Link
EP (1) EP3074195A4 (en)
FI (1) FI20136175L (en)
WO (1) WO2015075321A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1010815A (en) * 1911-12-05 R F Simmons Company Cigar-cutter.
US1086463A (en) * 1913-01-06 1914-02-10 Meyer L Robbins Cigar-cutter.
US3319675A (en) * 1965-04-23 1967-05-16 Sr Marcus J Bles Tractor carried log splitters
SU586874A1 (en) * 1976-09-30 1978-01-05 Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности Wood transverse-cutting apparatus
US4282910A (en) * 1980-07-10 1981-08-11 Michigan Technological University Fingerling shear
US4483379A (en) * 1982-12-29 1984-11-20 Aikins Warren A Wood/log processing machine
FI94848C (en) * 1994-01-25 1995-11-10 Javitek Oy Garbage removal system especially in a wood splitter
US5860372A (en) * 1995-02-21 1999-01-19 Bouldin & Lawson, Inc. Seedling transplanter with planting fingers
FI20040095A0 (en) * 2004-01-22 2004-01-22 Agromaster Oy Vedklabbsmaskin

Also Published As

Publication number Publication date
EP3074195A4 (en) 2017-04-26
FI20136175L (en) 2015-05-26
WO2015075321A1 (en) 2015-05-28

Similar Documents

Publication Publication Date Title
US4199841A (en) Hand meat tenderizer
US7631673B2 (en) Veneer cutter
WO2007089497A3 (en) Steep angle cutter hub with blunt edge blades
CN103692013B (en) Staged combined shear sword
CA2736184A1 (en) Method and apparatus for cutting dough products having holes from a dough sheet
US20150246457A1 (en) Mandolin slicer
US20110120279A1 (en) Manual Food Dicer
IE20100470A1 (en) Rotary cutting die apparatus for cutting corrugated board including retainers for maintaining trim strippers closely adjacent trim cutting blades
TWI594817B (en) Die
JP2007083378A (en) Paper sheet cutting and separating device
EP3074195A1 (en) Cutting blade edge of a cutting and splitting device
FR3020581A1 (en) METHOD AND DEVICE FOR REMOVING PREDECUTED PIECES FROM A SHEET OF MATERIAL AND AN EJECTING MEMBER FOR SUCH A DEVICE
US20110252937A1 (en) Slitting Machine for Longitudinally Cutting Material Where The Cut is Critical
DE202016005673U1 (en) Piece of wood splitters
CN203696119U (en) Step-type combined shear blade
US1020100A (en) Excelsior-machine.
US880878A (en) Implement for severing brittle substances.
KR200453438Y1 (en) Fixing device installed to dieboard
EP2002772B1 (en) Device for cutting fruit, vegetables or similar
DE102019001154B4 (en) Splitting knife for cutting bread products
US1016347A (en) Stereotype-plate cutter.
US828062A (en) Tobacco-cutter.
CN204831824U (en) Clip formula slicing knife convenient to light section of plant tissue
DE502006006758D1 (en) Device for three-sided trimming of products
US605593A (en) Machine for making match-cards

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160621

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20170327

RIC1 Information provided on ipc code assigned before grant

Ipc: B27L 7/00 20060101AFI20170321BHEP

17Q First examination report despatched

Effective date: 20181114

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190525