EP0201739A1 - Machine à cisailler des piles de placage - Google Patents

Machine à cisailler des piles de placage Download PDF

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Publication number
EP0201739A1
EP0201739A1 EP86105177A EP86105177A EP0201739A1 EP 0201739 A1 EP0201739 A1 EP 0201739A1 EP 86105177 A EP86105177 A EP 86105177A EP 86105177 A EP86105177 A EP 86105177A EP 0201739 A1 EP0201739 A1 EP 0201739A1
Authority
EP
European Patent Office
Prior art keywords
knife
pressure
trimming
pressure beam
machine according
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
EP86105177A
Other languages
German (de)
English (en)
Other versions
EP0201739B1 (fr
Inventor
Hans O. Kreder
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.)
Cessione kreder Hans O
Original Assignee
Babcock BSH 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 Babcock BSH AG filed Critical Babcock BSH AG
Publication of EP0201739A1 publication Critical patent/EP0201739A1/fr
Application granted granted Critical
Publication of EP0201739B1 publication Critical patent/EP0201739B1/fr
Expired 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

Definitions

  • the invention relates to a machine for trimming veneer packages according to the preamble of patent claim 1.
  • Trimming machines are used in veneer processing to trim the dried veneer sheets stacked into packages on their long sides. If the individual veneer sheets, the length of which is usually between 2.5 and 5 m and the width - transverse to the fiber - between 60 and 600 mm, are then to be assembled into larger formats on their long sides, the cuts of all veneer sheets must run exactly parallel so that no trimming is required to avoid gaps when assembling. Trimming machines used in this way are called joining scissors.
  • the packages are additionally trimmed, bundled and measured on their narrow sides before they are processed further.
  • Trimming machines with two knives which cut the two long sides of the packages simultaneously in one operation.
  • the side into the machine Packets are pressed flat on a table by a vertically movable pressure bar, then a knife guided on one long side of the table cuts from bottom to top and at the same time a knife guided on the opposite long side of the pressure bar cuts from top to bottom.
  • the table or pressure beam surface opposite the respective knife serves as a cutting surface.
  • a disadvantage of this machine is that it can only be loaded and emptied manually via a longitudinal opening. Continuous, automatic loading is not possible. It is therefore only of limited suitability for installation in automated processing lines.
  • the invention has for its object to provide a generic machine for trimming veneer packages, which is automatically passed through by the veneer packages in the longitudinal direction.
  • the fixed table enables a conveyor to be installed between the table and the pressure beam. Since the cutting line of the lower knife is fixed, the packages can be aligned along this cutting line before entering the machine, e.g. on an upstream loading table. The cutting width for each package - i.e. the respective position of the upper knife - can be easily adjusted before entering the machine, e.g. with an adjustable directional light.
  • the feature of claim 2 ensures an exact transport through the trimming machine even with larger veneer widths. It has been shown that the accuracy of the cut of all sheets of a package is improved by a pressure bar according to claim 3.
  • the plates or the lower conveyor belt serve simultaneously as a cutting surface for the upper knife.
  • the feature of claim 6 ensures a uniform contact pressure on the edges to be cut, regardless of the set cutting width.
  • the two cutting lines can be easily defined.
  • the cross-sections can be defined at the same time using two additional straightening lights.
  • the area delimited by the directional lights can be determined automatically in a simple manner, as a result of which a subsequent, additional measurement of the veneer packs is no longer necessary.
  • a machine according to the invention for trimming veneer packs has a base frame of approximately 5 m in length and just over 1 m in width, which is built up from four vertical stands 1, lower cross members 2, upper cross members 3 and side longitudinal members 4.
  • a box-shaped trimming table 5 with a horizontal table surface is rigidly attached to the lower cross members 2, the length of which corresponds to the maximum package length (approx. 4.5 m) and the width corresponds to the maximum cutting width (approx. 600 mm).
  • the table 5 is stiffened in a pressure-resistant manner and covered with a plastic base 6 as the cutting surface.
  • a horizontal cutter bar 7 is fastened vertically and in the longitudinal direction in a guide 9 with a cutter 8 extending over the length of the desk.
  • Swing levers 10 actuated by hydraulic cylinders act on the cutter bar 7 and guide the cutter 8 cutting upwards when cutting along a circular path.
  • a dimensionally stable, box-shaped pressure beam 11 is suspended vertically movable and transversely displaceable in the frame, the underside 12 coated with plastic being parallel to the table surface and corresponding in size.
  • the downward-directed cutting operation is also carried out in accordance with the lower knife 8 by means of rocker arms 16 engaging on the cutter bar 13 with hydraulic cylinders.
  • the suspension of the pressure beam 11 consists of two longitudinal rows of vertical, hydraulic, double-acting piston-cylinder units 17, 18, the cylinders of the row 17. which runs above the lower knife 8, are rigidly attached to the frame.
  • the associated pistons are each provided with rollers which run in guide rails 19 which are fastened transversely on the upper side of the pressure beam 11.
  • the pistons of the second row 18 of the piston-cylinder units are rigidly attached to the top of the pressure bar 11 along the edge adjacent to the knife bar 13.
  • the associated cylinders are fixedly connected to a longitudinal guide beam 20 which is fastened to the upper cross members 3 so as to be horizontally displaceable.
  • the transverse displacement takes place via two linear amplifiers (not shown), a threaded spindle, a chain drive or hydraulic cylinder can also be used.
  • Synchronization elements 21 - here racks with pinion - are integrated in the suspension of the pressure beam 11, which ensure a parallel transverse displacement and height adjustment of all edges of the pressure beam 11.
  • a transport device for the veneer packs in the form of two superimposed bands 22, 23 of smaller width than the minimum cutting width - here approx. 50 mm - leads in the longitudinal direction between table 5 and pressure beam 11 through the frame.
  • the upper run of the lower belt 22 runs directly next to the knife 8 over the table surface, it also serves as a pressure bar. It has been shown that a slightly increased contact pressure along the cut edges has a positive effect on the cut quality. For this reason, the underside of the pressure bar 11 is also provided with a longitudinal pressure bar 24 of approximately 2 mm thickness in addition to the knife bar 13.
  • the lower conveyor belt 22 runs back inside the box-shaped table 5.
  • the input-side deflection roller 26 is located in front of a loading table 27, not shown in FIG.
  • conveyor belts 22.1, 23.1 running one above the other between table 5 and pressure beam 11 are used as the transport device. Both conveyor belts 22.1, 23.1 extend on the inlet side to over the loading table 27 and on the outlet side to a removal device 29.
  • the upper band 23.1 has a width slightly less than the minimum cutting width. It runs right next to the lower knife 8 through the frame.
  • the transport device for the veneer packs consists of elastic, interconnected plastic or leather plates, each of the size of the table surface, which is intermittently, e.g. with chains, can be moved over the table 5.
  • the plates also serve as a cutting surface for the upper knife 14.
  • the upper conveyor belt 23 may not be necessary, since the packages do not have to be clamped in for a precisely guided transport due to the wide transport surface.
  • the packages on the lower conveyor belt of clamping devices e.g. automatically closing parentheses.
  • the loading table 27 mentioned above is firmly connected to the frame on its narrow side on the input side.
  • Directional lights 30-33 are projected onto its table surface, one of which is in alignment with the lower knife 8.
  • a second longitudinal light 31 can be adjusted transversely and is connected to the transverse adjustment of the pressure beam 11 via a control. This control guides the upper knife 14 depending on the position of the directional light on its escape line.
  • two transverse lights 32, 33 are additionally projected onto the loading table.
  • a transverse light 32 is fixed, the second -33- is movable in the longitudinal direction of the table 27.
  • the position of this displaceable transverse light 33 controls the cut of a transverse trimming machine downstream of the longitudinal trimming machine via the feed of the conveyor belt 22.
  • the packages are bundled.
  • the area between the directional lights 30-33 is automatically calculated by the position of the movable directional lights 31, 33 from a connected computer. This makes a separate measurement of the veneer packs after the finishing unnecessary.
  • a machine for gluing the edges follows the longitudinal trimming machine according to the invention, followed by a cross-assembly machine.
  • the deflection rollers 28 of the upper conveyor belt 23 are then adjusted downward until the package is clamped between the two belts 22, 23.
  • the operator now moves the movable longitudinal light 31 up to the line of the second cut.
  • the control of the transverse displacement of the pressure beam 11 connected to the directional light 31 automatically adjusts the upper knife 14 in alignment with the directional light 31.
  • the guide bar 20 is displaced by the two linear amplifiers and pulls the pressure bar 11 along with the piston-cylinder units 18.
  • the transverse displacement with respect to the second, fixed row 17 of piston-cylinder units is possible because the pressure beam 11 hangs transversely displaceably on the rollers of the piston rods via the guide rails 19.
  • the belts 22, 23 then transport the package onto the trimming table 5, where it is pressed flat by the pressure beam 11, which is moved downward from the piston-cylinder units.
  • the baling pressure is automatically controlled depending on the cutting width, so that there is an almost constant specific surface pressure.

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)
EP86105177A 1985-05-13 1986-04-15 Machine à cisailler des piles de placage Expired EP0201739B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853517197 DE3517197A1 (de) 1985-05-13 1985-05-13 Maschine zum beschneiden von furnierpaketen
DE3517197 1985-05-13

Publications (2)

Publication Number Publication Date
EP0201739A1 true EP0201739A1 (fr) 1986-11-20
EP0201739B1 EP0201739B1 (fr) 1988-07-13

Family

ID=6270613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105177A Expired EP0201739B1 (fr) 1985-05-13 1986-04-15 Machine à cisailler des piles de placage

Country Status (2)

Country Link
EP (1) EP0201739B1 (fr)
DE (2) DE3517197A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255200A (zh) * 2019-06-28 2019-09-20 中集新型环保材料股份有限公司 坯板输送堆叠设备及坯板输送堆叠的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1239933B (it) * 1990-05-18 1993-11-23 Casati Macchine Di Casati Eligio, Giorgio & C. Macchina per il taglio trasversale di fogli di legno particolarmente per la intestatura di pacchi di impiallacciatura

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774750A (en) * 1969-12-17 1973-11-27 E Streckert Automatic veneer measuring and clipping control system
DE2915707A1 (de) * 1978-12-12 1980-07-03 Ompec Di Provenzi Enrico Carug Beschneidemaschine fuer furniere

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7026375U (de) * 1970-07-14 1971-04-08 Carl Rueckle Maschb Gmbh Maschine zum beschneiden, insbesondere von furnierstapeln
DE7205342U (de) * 1972-02-12 1972-05-04 Ziebeker G Furnierquerschneidemaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774750A (en) * 1969-12-17 1973-11-27 E Streckert Automatic veneer measuring and clipping control system
DE2915707A1 (de) * 1978-12-12 1980-07-03 Ompec Di Provenzi Enrico Carug Beschneidemaschine fuer furniere

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110255200A (zh) * 2019-06-28 2019-09-20 中集新型环保材料股份有限公司 坯板输送堆叠设备及坯板输送堆叠的方法
CN110255200B (zh) * 2019-06-28 2024-05-28 徐州中集新材科技发展有限公司 坯板输送堆叠设备及坯板输送堆叠的方法

Also Published As

Publication number Publication date
EP0201739B1 (fr) 1988-07-13
DE3517197A1 (de) 1986-11-13
DE3660368D1 (en) 1988-08-18

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