US2970505A - Wood veneer cutter having a plurality of knives operable separately or together - Google Patents

Wood veneer cutter having a plurality of knives operable separately or together Download PDF

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Publication number
US2970505A
US2970505A US75934258A US2970505A US 2970505 A US2970505 A US 2970505A US 75934258 A US75934258 A US 75934258A US 2970505 A US2970505 A US 2970505A
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US
United States
Prior art keywords
knife
cutter
knives
beams
cutting
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.)
Expired - Lifetime
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English (en)
Inventor
Geenen Johannes
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.)
MULLER A G BRUGG
MULLER AG BRUGG
Original Assignee
MULLER A G BRUGG
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.)
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Publication date
Application filed by MULLER A G BRUGG filed Critical MULLER A G BRUGG
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Publication of US2970505A publication Critical patent/US2970505A/en
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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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8759—With means to connect or disconnect tool and its drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8828—Plural tools with same drive means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated
    • Y10T83/8864—Plural cylinders

Definitions

  • the present invention relates to a cutter for web-type structures and more particularly to a cutter for wood veneer strips or plates.
  • a further object of the present invention is the provision of a means facilitating the cutting of a plurality ofstrips extending parallel to each other into sections of different length.
  • Another object of the present invention is the cutting of wood veneer plates from webs and to allow for different width of such webs to be cut.
  • Still another object of the present invention is the provision of a cutter for wood veneer plates or strips having a plurality of cutting knives arranged in a common cutting plane in end to end relation in a manner so as to permit individual actuation thereof.
  • Still a further object of the present invention is the provision to a cutter for wood veneer strips in which the effective width of the machine is divided into a plurality of sections and each section having an independently operable upper knife cooperating with a comtion of the arrow in Fig. 1;
  • Fig. 4 is a section taken along the line IV--IV in i Fig. 2;
  • Fig. 5 is a section taken along the line VV in Fig. 1;
  • Fig. 6 is a section taken along the line VI-VI in Fig. 1, and
  • Fig. 7 is a diagram of the electro-pneumatic control system of the cutter.
  • Figs. 1 to 6 show 'that the veneer cutter consists substantially of two vertical stands 1 and 2 each arranged on a foot 3 and 4,
  • the two stands 1 and 2 are rigidly interconnected at their upper ends by a horizontally extending pressure beam 5.
  • the two stands 1 and 2 are further interconnected by a bottom-knife or lower beam 6 which supports a stationary bottom knife '7 having an upwardly directed cutting edge.
  • Beam 6 extends parallel with respect to beam 5.
  • Each of the two ends of the beam 5 holds the upper end of a guide bar 8 by means of a pair of pins 40 1 indicated in Fig. 6.
  • the lower end of each guide bar 8 is secured by means of a pin 41 in a holding sleeve 9 rigidly attached on the stands 1 and 2, respectively.
  • guide bar holders 10 are arranged on the beam 5, on each side of its lengthwise centre, in each of which a guide bar 11 is secured by means of screws 12.
  • Guide bars 8 and 11 extend vertically downward from the pressure beam 5.
  • Extending intermediate the pressure beam 5 and the bottom knife beam 6 are two upper or top-knife beams 13 and 23, each of which is operable independently of the other and is provided at its outer end with a guide sleeve 14 slidably seated on the respective guide bar 8 and at its inner end with a guide sleeve 15 slidably seated on the respective guide bar 11.
  • the top-knife beams 13 and 23 are thus slidable in vertical direction on the guide bars 8 and 11.
  • Each of the two top-knife beams 13 and 23 carries an upper or topknife 16 and 26, respectively.
  • the two top knives are so arranged on their respective top-knife beams 13 and 23 that they present a shed-like slant toward the centre of the cutter.
  • the inner ends of the two top knives 16, 26 meet to ensure a continuous cut when both knives are in joint operation.
  • the top-knife beams 13 and 23 are operated by pneumatic means.
  • two cylinders 17 are provided on the beam 5, each cylinder containing a piston 18 slidable therein and having a piston rod 19 connected thereto.
  • the lower end of each piston rod 19 is secured by means of a pin 42 in a flanged rod holder 20 and thereby to the top-knife beam 13 or 23, respectively.
  • a pressure medium source not shown, e.g. a compressed air pump
  • a pressure line 21 leads to a cutoff cock 22.
  • respective lines 25 connected thereto by a distributor member 24 lead to a three-way valves 27 respectively operated electromagnetical'ly.
  • Each of the two valves is connected to one of the cylinders 17 by a line 44 and to the atmosphere by an exhaust line 43.
  • each of the two top-knife beams 13 and 23 is provided with two compression springs 28 acting against a spring bolt 29 and arranged in the beam 5.
  • Each of the compression springs 28 is supported in the beam 5 in a spring cap 30.
  • the spring bolts 29 which are firmly secured to the top-knife beams 13 and 23 in a spring bolt holder 45 by means of the pins 46 indicated, are provided at their upper ends, having a screw-thread 31, with a nut 32 and a lock-nut 33 serving to adjust the spring tension.
  • the springs 28 maintain the top-knives in their position of rest.
  • each of the two top-knife beams 13 and 23 is provided with a holder 37 having a bore 38 extending horizontally therethrough, the bores 38 coinciding when the two top-knife beams 13 and. 23 are in their respective lifted positions.
  • a locking bar 39 may be inserted into the two bores 38 to mechanically interlock the two top-knife beams 13 and 23, or withdrawn manually from the bore 38 of either holder 37, as shown in Fig. 1, thus permitting to operate either of the two top-knife beams 13 and 23 independently of the other.
  • a piston and cylinder arrangement may be provided to operate locking bar 38 mechanically.
  • Fig. 3 shows in a side view a table 47 attached to the stands 1 and 2 and designed to receive the veneer strips 49 to be cut.
  • the arrow 48 indicates the direction of movement of the strip49, indicated in dash-dotted lines, relative to the table 47 and to the cutter. y U
  • the control system of the veneer cutter is shown by 3 way of example in the diagram of Fig. 7 and consists essentially of the two electromagnetic three-way valves 27 described above and operated via the micro-relays 5t 51, 52 and 53, and of the two push-button release switches 54 and 55, and the cut-release lever switches 56 and 57 actuated by the'stock 49 and connected in revert to their initial position and thereby shut oif the parallel with said push-button release switches 54 and 55.
  • Electrical current is supplied to the control system from an alternating current source not shown via a master switch 62, a transformer 61 and a rectifier 60, the rectifier 60 supplying direct current required for the electric control system.
  • the master switch 62 is of the reversing type. At position the circuit is open and no current is supplied to the control elements, at 1 position the current source is so connected to the control elements that each of the two top-knife beams 13 and 23 can be operated individually via the micro-relays 50, 51 and 52, 53 respectively, and at 11 position the two cut-release switches 54, 55 and 56, 57 respectively are interlocked via the switch contact 63 so that the top-knife beams 13 and 2.3 simultaneously perform the cutting motion when one of the four release switches is tripped.
  • the micro-relays t and 52 are provided with selfholding or rest contacts 64, thus ensuring an impulse release of the cutting motion.
  • the micro-relays 51 and '53 are equally provided with self-holding contacts 65 and are-electrically interlocked with the micro-relays St) and 52 in such a manner that only one cut release occurs when. the cut-release switches 54, 55 or 56, 57 are operated, even if these remain closed beyond the period of the cutting cycle.
  • the succeeding cut cannot be released before the respective release switch has opened after the preceding cut, i.e. before the associated control relays 50, 51 or 52, 53 have returned to their initial position.
  • the cutter may also be controlled by mechanical, electro-mechanical, or high frequency means.
  • the locking bar 39 is inserted into the bores 38 of the two holders 37, as previously mcntioned,and secured in this position by means not shown in the drawings.
  • the pressure-medium cutoff cock Z2 is opened, thus permitting the pressure medium to flow through the line 2S andthe distributor 24 to the two electromagnetic threeway valves 27.
  • the master switch 62 is set to 11 position, with the result that the cut-release switches 54, 55, 56 'and 57 are interlocked.
  • the top-knife beams V 13 and 23 actuate the limit switches 58 and 59 which in turn cut off the electric current'to' the three-way valves 27 via the micro-relays 51 and 53, so that said valves 27 pressure medium line to the cylinders 17 and concurrently connect the two cylinders through the line 43 with the atmosphere.
  • the two top-knife beams 13 and 23 are lifted again by the action of the compression springs 28, whereupon the cutter is ready for the next cut.
  • the locking bar.39 is withdrawn from the bore 38 of one of the holders 3'7 and secured from falling out of the other holder 37 by means not shown in the drawing.
  • the master switch 62 is set to the 1 position, so that the cut-release switches 54, '56 and 55, 57 can operate as separate groups for the two top-knife beams 13 and 23, respectively.
  • a cutter for web type structures comprising a frame having a lower beam extending substantially-horizontally with respect to said frame and being rigidly supported thereby, a pressure beam rigidly connected with said frame and extending parallel to and above said lower beam, a lower cutting knife supported on said lower beam and having an upwardly directed cutting edge, downwardly extending guide means supported by.
  • said pressure beam a plurality of upper beams intermediate said pressure beam and said lower cutting knife and an ranged for upward and downward movement along said guide means independentlyof each other, said upper beams extending in a common vertical plane with said lower beam, locking means connected to said upper beams for selectively effecting interconnection and disconnection of said upper beams with each other,'respective upper cutting knives for each of said upper beams and connected to the latter, said upper cutting knives having downwardly directed cutting edges for cooperation withthe cutting edge of said lower cutting knife, the adjacent ends of said upper cutting 'knives meeting to present a continuous edge, the sum of the'length of said cutting edges of said upper knives corresponding substantially to.
  • each of said actuating means including a piston and a cylinder.
  • said lockingmcans include holders fixed to said upper beams, said holders having bores therethrough, a locking bar extending through said bars for holding said upper beams together, and means for actuating said locking bar connected thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
US75934258 1957-09-05 1958-09-05 Wood veneer cutter having a plurality of knives operable separately or together Expired - Lifetime US2970505A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1102378X 1957-09-05
CH1197588X 1957-09-05
CH2970505X 1957-09-05

Publications (1)

Publication Number Publication Date
US2970505A true US2970505A (en) 1961-02-07

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Family Applications (1)

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US (1) US2970505A (de)
CH (1) CH353890A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140634A (en) * 1961-09-07 1964-07-14 Hill Acme Company Drive means for metal fabricating apparatus
US3242786A (en) * 1962-01-19 1966-03-29 Giordano Roger Francois Shearing machine
US5012713A (en) * 1989-12-18 1991-05-07 Progressive Service Die Company Die power pack for cutting apparatus
US20080072999A1 (en) * 2006-09-21 2008-03-27 Raute Oyj Method and apparatus for recovering partial sized sheets in veneer production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1249595B (it) * 1991-02-12 1995-03-09 Cremona Angelo & Figlio Stazione di taglio in fogli per sfogliati di legno

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US733427A (en) * 1902-09-29 1903-07-14 William Ross Cutting-machine.
US734496A (en) * 1902-10-15 1903-07-28 American Car & Foundry Co Multiple punch.
GB190615666A (en) * 1906-07-11 1906-11-01 Hugh Wilson Smith Improvements in Machines for Shearing or Cutting Channel and other Bars, Beams or Girders.
US2038857A (en) * 1935-09-21 1936-04-28 Mary E Rutter Method and apparatus for cutting fur
US2351868A (en) * 1941-11-21 1944-06-20 Morgan Construction Co Shear
US2552958A (en) * 1948-11-08 1951-05-15 Von B Graham Shearing machine
US2825405A (en) * 1954-02-19 1958-03-04 Schloemann Ag Hydraulically operated ingot-shearing machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US733427A (en) * 1902-09-29 1903-07-14 William Ross Cutting-machine.
US734496A (en) * 1902-10-15 1903-07-28 American Car & Foundry Co Multiple punch.
GB190615666A (en) * 1906-07-11 1906-11-01 Hugh Wilson Smith Improvements in Machines for Shearing or Cutting Channel and other Bars, Beams or Girders.
US2038857A (en) * 1935-09-21 1936-04-28 Mary E Rutter Method and apparatus for cutting fur
US2351868A (en) * 1941-11-21 1944-06-20 Morgan Construction Co Shear
US2552958A (en) * 1948-11-08 1951-05-15 Von B Graham Shearing machine
US2825405A (en) * 1954-02-19 1958-03-04 Schloemann Ag Hydraulically operated ingot-shearing machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140634A (en) * 1961-09-07 1964-07-14 Hill Acme Company Drive means for metal fabricating apparatus
US3242786A (en) * 1962-01-19 1966-03-29 Giordano Roger Francois Shearing machine
US5012713A (en) * 1989-12-18 1991-05-07 Progressive Service Die Company Die power pack for cutting apparatus
US20080072999A1 (en) * 2006-09-21 2008-03-27 Raute Oyj Method and apparatus for recovering partial sized sheets in veneer production

Also Published As

Publication number Publication date
CH353890A (de) 1961-04-30

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