EP0040410A2 - Universal-Zerspanungsmaschine - Google Patents

Universal-Zerspanungsmaschine Download PDF

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Publication number
EP0040410A2
EP0040410A2 EP81103728A EP81103728A EP0040410A2 EP 0040410 A2 EP0040410 A2 EP 0040410A2 EP 81103728 A EP81103728 A EP 81103728A EP 81103728 A EP81103728 A EP 81103728A EP 0040410 A2 EP0040410 A2 EP 0040410A2
Authority
EP
European Patent Office
Prior art keywords
groove
universal
flaking
flakes
cylinder
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Withdrawn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
EP81103728A
Other languages
English (en)
French (fr)
Other versions
EP0040410A3 (de
Inventor
Luciano Pessa
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.)
FP - Fratelli Pessa Oleodinamica Industriale
Original Assignee
FP - Fratelli Pessa Oleodinamica Industriale
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 FP - Fratelli Pessa Oleodinamica Industriale filed Critical FP - Fratelli Pessa Oleodinamica Industriale
Publication of EP0040410A2 publication Critical patent/EP0040410A2/de
Publication of EP0040410A3 publication Critical patent/EP0040410A3/de
Withdrawn legal-status Critical Current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
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor

Definitions

  • the present invention relates to a universal flaking machine.
  • Machines for reducing wooden material in flakes are well-known. Generally, they comprise a frame for feeding the material to be flaked, an apparatus for blocking the material on the frame and a multiple body cutter head which provides for reducing the wooden material in flakes.
  • This body cutter head is preferably formed by a rotating cylinder having on the lateral surface a number of grooves which are slanted with regards to their generatrix and housing a number of continuous edge knives or comb knives.
  • centrifugal flaking machines present considerable wear which requires, about every four months, substitution of the wear "shoes" placed between the knives.
  • the material introduced into these machines has to be previously reduced in chips, thus requiring therefore additional machines and a great waste of time and energy in order to carry out this production.
  • the aim of the invention is to eliminate said drawbacks and to realize a flaking machine that reduces pieces of wood, large and small, in flakes and that presents a limited grade of wear.
  • a universal flaking machine comprising a multiple body cutter head implement, formed by a cylinder having on the lateral surface a number of grooves provided with knives, characterized in that each groove is connected to the exterior through an opening delimited by the corresponding knife and having a width only just sufficient for passage of the flakes and also connected to an aspirator for the flakes obtained.
  • the edge of the opening of each groove, opposed to the knife can consist in an interchangeable wear element.
  • each groove can have a substantially rectangular transversal section and the relative interchangeable wear element can form partial closure of the groove itself.
  • each groove can be connected, through a longitudinal opening made on the bottom, to a central cavity in the cylinder at the same time connected to the aspirator.
  • the flaking machine comprises a body cutter head formed by a hollow steel cylinder 1, on the lateral surface of which are obtained, for example by means of milling, grooves 2 for housing blocking plugs 4 for knives 3.
  • Each groove 2 has a substantially rectangular transversal section and is slanted with respect to the generatrix of the cylinder 1.
  • Each of these grooves extend obliquely to form a rear portion 5, also of rectangular transversal section, in which is housed a continuous edge knive 3, a knife holder 6 provided with housing 7 for engravers 8, and a protection plate 9.
  • Each plug 4 presents a passing opening 10, which extends almost the whole length of the plug itself, excluding the extremities, in correspondence of which the said plug is provided with cylindrical pins 11.
  • These pins 11 may be housed in corresponding holes 12, formed on the bottom of the extreme portions of the groove 2.
  • each groove 2 For the partial closure of each groove 2 an interchangeable wear element is provided 14, which is applied to the plug 4 by screws 15.
  • the internal surface of said element 14 is provided with an anti-wear plate 16 while the external lateral surface is shaped in such a way so as to continue the surface of the cylinder 1.
  • Each groove 2 also is connected, through a longitudinal opening 17, to the internal cavity of the cylinder 1, which at the same time is connected, through a casing 18, to an aspirator which is not shown in the drawings.
  • the flaking machine operates-as follows: as soon as the body cutter head 1 comes into contact with the material 19 to be flaked, the protruding points of the engravers 8 produce engravings substantially orthogonal to the rotation axis of the element 1 and.ensure in such a way that the knives 3, although of continuous edge, cause detachment of the flakings that have substantially equal sizes from the material 19.
  • Such flakings pass through the openings delimited by each knive 3 and the corresponding antiwear plate 16; they are then collected in the grooves 2 from where they are sucked by the aspirator through the longitudinal opening 17, the central hollow of the cylinder's body 1 and the casing 18.
  • the flaking machine offers a number of advantages, not only with respect to traditional flaking machines with multiple rotating elements, but also to traditional centrifugal flaking machines.
  • this one allows flaking of all types of wood (tree-trunks, saw-mill trimmings, chips) and can therefore be considered universal;
  • the second type it presents limited wear, it does not require a previous transformation of wood into chips and, therefore, reduces the complexity of the installation, energy and work time and also allows production of evenly sized flakes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Crushing And Pulverization Processes (AREA)
EP81103728A 1980-05-15 1981-05-14 Universal-Zerspanungsmaschine Withdrawn EP0040410A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT84127/80A IT1141813B (it) 1980-05-15 1980-05-15 Macchina truciolatrice universale
IT8412780 1980-05-15

Publications (2)

Publication Number Publication Date
EP0040410A2 true EP0040410A2 (de) 1981-11-25
EP0040410A3 EP0040410A3 (de) 1982-08-04

Family

ID=11324418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103728A Withdrawn EP0040410A3 (de) 1980-05-15 1981-05-14 Universal-Zerspanungsmaschine

Country Status (2)

Country Link
EP (1) EP0040410A3 (de)
IT (1) IT1141813B (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118439B (de) * 1957-11-04 1961-11-30 Paul Kirsten Dr Ing Werkzeugtraeger fuer Zerspanungsmaschinen zur Herstellung von Spaenen zur Spanplattenerzeugung
US3209801A (en) * 1958-12-01 1965-10-05 Auglo Paper Products Ltd Wood chip producing apparatus
DE1143321B (de) * 1959-09-19 1963-02-07 Paul Kirsten Dr Ing Spandickenbegrenzung an Holzzerspannungs-maschinen
CH419576A (de) * 1962-09-03 1966-08-31 Kirsten Paul Arthur Ing Dr Zylindrischer Werkzeugträger für Maschinen zum Zerspanen von Holz im wesentlichen parallel zur Faser
DE1198530B (de) * 1963-12-17 1965-08-12 Hombak Maschinenfab Kg Werkzeug zum Zerspanen von Holz

Also Published As

Publication number Publication date
EP0040410A3 (de) 1982-08-04
IT1141813B (it) 1986-10-08
IT8084127A0 (it) 1980-05-15

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Legal Events

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

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19830710

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Inventor name: PESSA, LUCIANO