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EP0190665B1 - Maschine zum Bearbeiten von Furnierblättern - Google Patents

Maschine zum Bearbeiten von Furnierblättern Download PDF

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Publication number
EP0190665B1
EP0190665B1 EP19860101201 EP86101201A EP0190665B1 EP 0190665 B1 EP0190665 B1 EP 0190665B1 EP 19860101201 EP19860101201 EP 19860101201 EP 86101201 A EP86101201 A EP 86101201A EP 0190665 B1 EP0190665 B1 EP 0190665B1
Authority
EP
European Patent Office
Prior art keywords
transporting
roller
machine according
machine
testing
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
Application number
EP19860101201
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0190665A1 (de
Inventor
Hans-Heinrich Kuper
Theo Grönebaum
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.)
Heinrich Kuper GmbH and Co KG
Original Assignee
Heinrich Kuper GmbH and Co KG
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 Heinrich Kuper GmbH and Co KG filed Critical Heinrich Kuper GmbH and Co KG
Publication of EP0190665A1 publication Critical patent/EP0190665A1/de
Application granted granted Critical
Publication of EP0190665B1 publication Critical patent/EP0190665B1/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
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y10T83/543—Sensing means responsive to work indicium or irregularity
    • 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
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9454—Reciprocable type

Definitions

  • the invention relates to a machine for processing veneer sheets in succession, with a horizontal conveying and support roller and a knife above the roller which can be moved to and from it, and with a scanning device for checking the thickness of the continuous veneer sheets and the measurement result-dependent Control of the knife and a at least one conveyor belt, arranged in front of the conveyor and support roller conveyor for the veneer sheets.
  • veneer sheets can be successively conveyed into the knife area, checked there by the scanning device, and those veneer sheet areas that do not have the required thickness, for example, can be cut out. These waste areas are scanned above the conveyor and support roller on which the veneer sheet is supported tangentially.
  • the use of the lateral surface of the conveyor and backup roller as a "support table" for the veneer sheet area to be scanned has the disadvantage that the accuracy of the scanning leaves something to be desired because of the curved surface of the conveyor and backup roller.
  • deviations of the lateral surface of the conveyor and support roller from the precisely circular cylindrical shape have an unfavorable effect on the accuracy of the scanning of the veneer sheet thickness. This deviation from the circular cylindrical shape is known as "blow".
  • the invention has for its object to develop the machine for processing veneer sheets so that a much more precise detection of the thickness of the veneer sheets is possible.
  • the machine should also be able to control veneers by scanning, the thickness of which is only 0.5 mm.
  • the scanning device has a plurality of the same, each mounted on pivotable parallel levers sensing rollers, which are supported above a machine table of the conveyor on the veneer sheet passing through it and in that one opposite the conveyor and support shaft, deflecting the conveyor belt Deflection shaft is supported on its peripheral region facing away from the conveyor belt in a bearing shell fastened to the machine table. It is therefore used as a base for the continuous veneer sheets used with a flat, horizontal table surface on which the veneer sheet is supported by the conveyor belt, so that the base does not change at the location of the scanning rollers. In contrast to this, there is a constant change of the base in the known machine because the base is the conveyor and support roller rotating during the conveying process.
  • the diameter of the deflection shaft is significantly smaller than the diameter of the conveyor and support roller. In this way it is possible to get very close to the interface on the surface of the conveyor and support roller with the scanning point, so that possible error limits due to the transport time can be kept low.
  • Each pivotable lever of a sensing roller is preferably designed as an angle lever, the pivot axis of which extends transversely to the conveying direction is arranged in the intersection line of its two legs and is mounted in a fixed lever bearing.
  • This angle lever enables a translation of the lever deflection caused by changes in the thickness of the continuous veneer sheet. While the lower leg of the angle lever carrying the feeler roller is short, the upstanding upper leg of the angle lever has a substantially greater length, so that the lever deflection appears enlarged at its free end.
  • the degree of a thickness deviation can be forwarded, for example, via the control element of an electrical microswitch.
  • the machine is connected to an electrical control device that coordinates the activities of the individual devices.
  • the circuit causes a time delay of e.g.
  • the conveying process is interrupted 1/10 second.
  • the veneer sheet has then moved so far that it is located with the boundary line of its defective area on the now stationary and supporting roller which serves as a base for the cutting process, so that the cutting takes place by moving the knife in the direction of the roller surface.
  • the circuit then restarts the conveying process.
  • the stations for cutting and for scanning are spatially separated, so that it is possible to carry out a very precise scanning of the thickness of the veneer sheets because of the unchangeable surface of the machine table underneath the scanning rollers and then the conveyor and support roller to use their short standstill as a base for cutting the veneer sheet.
  • the machine has on a machine frame 10 a horizontal machine table 11, which is designed both as a conveyor for veneer sheets 12 and as part of a scanning device for the thickness of the continuous veneer sheets 12.
  • a horizontal machine table 11 which is designed both as a conveyor for veneer sheets 12 and as part of a scanning device for the thickness of the continuous veneer sheets 12.
  • the machine table 11 is followed by a cutting station which has a horizontal conveying and supporting roller 13 and a knife 14 which can be displaced vertically above this roller and which, when it moves onto the conveying and supporting roller 13, is supported on the outer surface there Can completely cut veneer sheet 12 perpendicular to the conveying direction.
  • the conveyor device consists of a plurality of identical conveyor belts 15 arranged parallel to one another at intervals, which are circumferentially arranged as endless belts on the machine table 11, sliding along a portion of their length above the machine table 11. These conveyor belts 15 are on several Waves excited.
  • a horizontal deflection shaft 16 opposite the conveying and supporting roller 13 is supported in a segment bearing shell 17 which is fastened to the machine table 11 at the outlet end of the conveying device. This mounting of the deflection shaft 16 ensures precise guidance of all conveyor belts in the region of the conveyor device adjacent to the conveyor and support roller 13, where a plurality of sensing rollers 18 control the thickness of the veneer sheets 12 passing through on the conveyor belts 15.
  • deflecting shafts 19, 20 and 21 are arranged at the inlet end of the conveying device, wherein for example the deflecting shaft 20 can be the drive shaft for the conveyor belts 15.
  • the deflecting shaft 20 can be the drive shaft for the conveyor belts 15.
  • a support plate 22 which favors the sliding of the conveyor belts 15 is incorporated over most of the length.
  • the feeler rollers 18 provided for checking the thickness of the continuous veneer sheets 12 are each mounted on pivotable levers.
  • two feeler rollers 18 with horizontal axes extending transversely to the conveying direction are mounted on the lower legs 23 of angle levers 24, each angle lever 24 having a leg 25 which is significantly longer than the lower leg 23.
  • each angle lever 24 is pivotally mounted about a horizontal pivot axis 26 which, like the axes of the feeler rollers 18, runs transversely to the conveying direction and is held in a fixed lever bearing 27.
  • the feeler roller 18 is rotatably supported at the free end of the lower leg 23 of the angle lever 24, it stands the free end of the upstanding leg 25 in contact with the actuator 28 of a microswitch 29 fixed to the machine.
  • a helical spring 30 which is arranged within a fixed housing 31 of the machine arranged above the conveying device, the upstanding leg 25 is pulled towards the housing 31 and thus the feeler roller 18 on the lower leg 23 is resting on the conveyor belt 15 and the machine table 11 Veneer sheet 12 pressed.
  • the bias of the coil spring can be changed with the help of an adjusting screw 32, to which the coil spring is attached with its other end.
  • the veneer sheet 12 Before the veneer sheet 12 reaches the scanning area, it is pressed over a large part of its path with the aid of pressure rollers 33 onto the conveyor belts 15 and the machine table 11, so that it approaches the scanning area with the scanning rollers in a completely flat form.
  • six pressure rollers 33 are arranged one behind the other in the conveying direction above each conveyor belt 15, with all pressure rollers above a conveyor belt 15 being mounted in a downwardly open, cross-sectionally U-shaped roller holder 34.
  • the axes of the pressure rollers 33 run in the same way as the axes of the feeler rollers 18 and the axis of the conveying and supporting roller 13 transversely to the conveying direction.
  • a rack and pinion drive 35 arranged in the housing 31 is used to raise or lower the roll holder 34.
  • the pressing forces are arranged with the aid of between the roll holder 34 and the rack and pinion drive 35 Coil springs 36 evenly distributed.
  • the relative displacement between the rack and pinion drive 35 and the roller holder 34 to a small extent enables guide bushes 37 with guide bolts 38.
  • FIG 4 additional devices of the machine are shown schematically, which favor the exact working method.
  • the machine thus has a plurality of swiveling stop fingers 39 against which the incoming rectangular veneer sheets 12 strike with their front edge and are thereby aligned exactly at right angles to the conveying direction.
  • the machine is provided with hold-down devices 40 which can be swiveled up and which press the veneer sheet onto the conveyor and support roller 13 in the vicinity of its interface.
  • the machine works as follows.
  • A, for example, rectangular veneer sheet 12 is placed on the machine table 11 and the conveyor belts 15 rotating there at the entry point and drawn into the area of the pressure rollers 33 by these.
  • the veneer sheet passes under the sensing rollers 18 of the scanning device. If the thickness of the continuous veneer sheet fluctuates within the desired limits, it is transported further out of the machine via the conveyor and support roller 13.
  • the feeler roller 18 located there changes its distance from the surface of the machine table 11 as it passes through the damaged area or, for example, a hole in the veneer sheet.
  • the feeler roller 18 approaches the table to the extent necessary Thickness of the veneer sheet is not present.
  • the angle lever 24 is pivoted about its pivot axis 26 so that the free end of the upstanding leg 25 executes a sufficiently large pivot path to operate the microswitch 29 via the actuator 28.
  • This pivoting path has been translated to a large value due to the much greater length of the upstanding leg 25 compared to the length of the lower leg 23.
  • a very slight change in the thickness of the veneer sheet, which scans the feeler roller 18, can thus result in a sufficient deflection on the actuating member 28.
  • the actuation of the microswitch 29 now causes the circuit of the machine to switch off the entire conveying process after a short time. This time is such that the veneer sheet with the boundary line between the good, the desired thickness and the damaged area has reached its interface on the conveyor and support roller 13 below the knife 14 when the conveying process is switched off. Now the damaged area is cut out over the entire width of the veneer sheet by lowering the knife 14.
  • the circuit is set up in such a way that the knife 14 cuts out a strip containing the damaged area from the veneer sheet, that is to say it is moved down and up twice, with a delivery of the veneer sheet between these two processes corresponding to the length of the damaged area in the conveying direction.
  • the strip with the damaged area can be removed by a special discharge device which adjoins the conveyor and support roller 13 in the conveying direction be discarded so that the perfect veneer and waste strips are conveyed separately.
  • the diameter of the deflection shaft 16 is substantially smaller than the diameter of the conveyor and support roller 13. In this way it is possible to get very close to the surface of the conveyor and support roller 13 with the scanning point, so that possible error limits as a result of the transport time are low being held.
  • the pressure rollers 33 When the veneer sheet 12 runs into the machine, the pressure rollers 33 are in their raised position. The veneer sheet 12 is aligned with the pivoted stop fingers 39. Now the pressure rollers 33 are lowered and the stop fingers 39 are swung up at the same time, so that the veneer sheet 12 released at the front edge is forcibly conveyed further by the conveyor belts 15 and the pressure rollers 33.

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)
  • Delivering By Means Of Belts And Rollers (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
EP19860101201 1985-02-02 1986-01-30 Maschine zum Bearbeiten von Furnierblättern Expired - Lifetime EP0190665B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3503573 1985-02-02
DE19853503573 DE3503573A1 (de) 1985-02-02 1985-02-02 Maschine zum bearbeiten von furnierblaettern

Publications (2)

Publication Number Publication Date
EP0190665A1 EP0190665A1 (de) 1986-08-13
EP0190665B1 true EP0190665B1 (de) 1991-10-02

Family

ID=6261501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860101201 Expired - Lifetime EP0190665B1 (de) 1985-02-02 1986-01-30 Maschine zum Bearbeiten von Furnierblättern

Country Status (6)

Country Link
US (1) US4687035A (sv)
EP (1) EP0190665B1 (sv)
JP (1) JP2504742B2 (sv)
DE (2) DE3503573A1 (sv)
ES (1) ES8701577A1 (sv)
FI (1) FI83405C (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181445A (en) * 1991-11-15 1993-01-26 Ultimizer's Inc. Optimizing cutoff saw
US6085813A (en) * 1998-10-30 2000-07-11 Georgia-Pacific Corporation Method for making plywood
US6585177B2 (en) * 2000-03-01 2003-07-01 Charles Castronovo High-security data removal process for data-containing disks, portable machine for high-speed, high-security disk removal, and DVD splitting process and apparatus
US20030154834A1 (en) * 2002-02-20 2003-08-21 Cothrell Leroy E. Automatic cutoff saw
US20030217625A1 (en) * 2002-05-22 2003-11-27 Hatley Kenneth J. Method and apparatus for sizing stator wedge slides
JP3818451B2 (ja) * 2004-11-22 2006-09-06 日東電工株式会社 積層体の切断方法
CN108098939A (zh) * 2018-01-26 2018-06-01 清远市创意智能科技有限公司 一种全自动高精度指接机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370493A (en) * 1965-10-23 1968-02-27 Donley Bindery Company Inc Apparatus for feeding work to and from a work station
FR1597326A (sv) * 1968-12-30 1970-06-22
US3780777A (en) * 1971-10-06 1973-12-25 Oliver Machinery Co Defecting saw
US3776078A (en) * 1972-08-15 1973-12-04 Carbide Form Grinding Inc Apparatus for cutting continuous slide fastener chains into slide fasteners of predetermined length
FR2201955B1 (sv) * 1972-10-09 1976-05-07 Keller Spezialtechnik Gmbh
JPS50146999A (sv) * 1974-05-18 1975-11-25
US4008639A (en) * 1974-09-19 1977-02-22 Meinan Machinery Works, Inc. Device for severing a veneer sheet
DE2552710C2 (de) * 1975-11-25 1985-08-14 Karl 3454 Bevern Bertram Elektronische Vorrichtung für Furnierschneidemaschinen
IT1083162B (it) * 1977-03-30 1985-05-21 Kuper Heinrich Macchina per il rinforzo trasversale di lamine di legno fogli per impiallacciatura o simili
US4340137A (en) * 1978-03-27 1982-07-20 Opcon, Inc. Cant movement and aligning mechanism

Also Published As

Publication number Publication date
FI83405C (sv) 1991-07-10
ES8701577A1 (es) 1986-12-01
US4687035A (en) 1987-08-18
DE3681744D1 (de) 1991-11-07
JPS61225003A (ja) 1986-10-06
FI83405B (fi) 1991-03-28
FI860295L (fi) 1986-08-03
ES551512A0 (es) 1986-12-01
EP0190665A1 (de) 1986-08-13
JP2504742B2 (ja) 1996-06-05
FI860295A0 (fi) 1986-01-22
DE3503573A1 (de) 1986-08-07

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