EP0739696A1 - Scie à châssis à plusieurs cadres - Google Patents

Scie à châssis à plusieurs cadres Download PDF

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Publication number
EP0739696A1
EP0739696A1 EP96890058A EP96890058A EP0739696A1 EP 0739696 A1 EP0739696 A1 EP 0739696A1 EP 96890058 A EP96890058 A EP 96890058A EP 96890058 A EP96890058 A EP 96890058A EP 0739696 A1 EP0739696 A1 EP 0739696A1
Authority
EP
European Patent Office
Prior art keywords
frame
crankshaft
saw
frames
blades
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Withdrawn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
EP96890058A
Other languages
German (de)
English (en)
Inventor
Franz Xaver Maier
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.)
AVE Umwelttechnik GmbH
Original Assignee
AVE Umwelttechnik GmbH
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 AVE Umwelttechnik GmbH filed Critical AVE Umwelttechnik GmbH
Publication of EP0739696A1 publication Critical patent/EP0739696A1/fr
Withdrawn legal-status Critical Current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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/12—Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibration; Arrangements for counter-balancing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/04—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame with multiple- blade saw frame

Definitions

  • the invention relates to a frame frame saw according to the preamble of claim 1.
  • Frame frame saws in which the saw blades are clamped in an interchangeable frame that can withstand high tensile force, have the advantage over band and circular saws that much thinner saw blades can be used, whereby smaller cutting widths and higher accuracies are achieved.
  • the consequence of this is a reduction in saw waste by approx. 20% compared to band and circular saws.
  • the disadvantage of these thin-cutting saws compared to band and circular saws lies primarily in the significantly lower cutting speed and thus throughput.
  • such thin-cutting gates are preferably driven from above, in exceptional cases from below.
  • the stroke movement is transmitted from the main drive shaft via connecting rods to the lower or upper guide.
  • the vibrations that occur are attempted to be compensated for by balancing weights on the main shaft.
  • the main shaft has about 400 to 500 rpm.
  • Significantly higher speeds of rotation can no longer be achieved with this type of construction, since the vibrations can no longer be damped satisfactorily.
  • By installing additional balancer shafts the number of revolutions can be increased somewhat, but the effort for this is disproportionately high.
  • the main disadvantage compared to band saws and in particular circular saws cannot be eliminated with this.
  • the maximum continuous cutting speed of such a the State-of-the-art gates are therefore - due to the limitation of the number of revolutions of the main shaft - about 1 m / min at a cutting height of 70 mm.
  • the cutting width is usually 150 mm, max. 220 mm, but with max. 25 saw blades in use and cannot be significantly enlarged due to the construction of the stenter frame.
  • SE-PS 501 757 describes a gang saw consisting of two frames which are arranged above and below a crankshaft. On a disc connected to the crankshaft, the connecting rod for driving the upper frame is attached on one side and the connecting rod for driving the lower frame is eccentrically fastened on the other side.
  • FR-PS 1 256 424 discloses a sawing machine, in particular for stone and similar materials.
  • Two frames containing the saw blades are staggered one behind the other.
  • the two frames are driven from above via two disks and connecting rods. Due to the opposite drive of the two saw frames, the vibrations can be minimized and higher speeds of the crankshaft can be achieved.
  • the throughput can only be increased due to a slightly higher cutting speed.
  • the workpiece is pushed over a workbench with the aid of a cross member and passes through two series of diamond saw blades which are fastened on two frames which move against one another so that tensions are equalized.
  • the frames with the saw blades are driven by a shaft driven by an electric motor and a connecting rod which is connected to a lower end of a frame. The opposite movement is achieved by a special connection between the two frames using connecting rods.
  • the frames are arranged one behind the other with the saw blades as in the aforementioned FR-PS 1 256 424.
  • the invention also pursues a task of the mentioned reserve, the smoothest possible cut of granite, marble or other stones.
  • US Pat. No. 3,929,048 discloses a frame saw in which each saw blade of a frame is connected to a crankshaft at the top and bottom.
  • An object of the invention of this provision is to reduce the vibration and thereby to increase the efficiency in the production of cut material.
  • the frame saw consists of a frame in which the ends of each crankshaft are rotatably supported at the top and bottom.
  • the upper and lower crankshafts are identical except for an extension for coupling the drive and are arranged in parallel.
  • the crankshafts are formed by outer eccentrically arranged disks and intermediate crankings.
  • the saw blades are clamped between the crankings of the upper and lower crankshafts. When the crankshafts move, the saw blades not only move back and forth vertically, but also horizontally. In the known construction, the number of saw blades is limited due to stability requirements.
  • DE-PS 2 318 820 shows a frame saw machine which is based on the task of significantly reducing the vibrations of the stand.
  • the crankshaft is rotatably supported in a cradle carried by the stator, which can be moved back and forth relative to the stator under the action of the forces which the crankshaft exerts on it during its rotation.
  • the DE-PS 27 21 842 describes a gang saw machine with mass balance, which has a, guided on a frame stand up and down movable saw frame, which is driven by at least one stilt, or at the lower end on a saw frame pin and on a crank pin. the like a crankshaft is articulated.
  • the task is to create a machine that optimizes the distribution of the mass forces in the sawing machine. This is solved by two in parallel balance shafts arranged to the crankshaft, seen in the direction of advance of the wood, arranged in front of or behind the crankshaft at approximately the same height as this and approximately symmetrically to it.
  • SU-PS 1794646 discloses a horizontal wood saw frame which is connected to a crankshaft via a connecting rod.
  • a slide is connected via motor-driven screw spindles, on which pneumatic cylinders are mounted.
  • Interchangeable supports are arranged on these, which serve to clamp the tree trunk to be cut.
  • the SU-PS 616 124 describes a wood frame saw with an arrangement according to the invention, which protects the transmission from overload.
  • the arrangement consists of a frame containing the saw blades, which is connected to the crankshaft by means of a connecting rod, the crankshaft being connected to counterweights via flexible connections and a bevel gear.
  • the object of the invention is to largely alleviate or to avoid the disadvantages described at the outset.
  • This object is achieved by the measure according to the characterizing part of claim 1.
  • a balanced lifting movement and a substantial increase in throughput can be achieved when using a single machine.
  • costs regarding operation and maintenance as well as energy consumption of the machine can be reduced.
  • a larger cutting width and in combination with a higher cutting speed a significant increase in throughput compared to the construction according to the aforementioned FR-PS 1 256 424 achieved.
  • the present invention pursues the principle that the individual frames and not the individual saw blades are connected to the crankshaft crankings.
  • the frames which contain the clamped saw blades, only perform a vertical back and forth movement.
  • the construction according to the invention has only one crankshaft.
  • the crankshaft has at least 2 to 12 crankings, preferably 6 crankings.
  • the permanent cutting speed achievable with the subject matter of the invention is at a cutting height of 70 mm at 2.5 m / min at least twice as high as in thin cutting gates according to the prior art.
  • the total cutting width is 540 mm.
  • the combination of a higher cutting speed and a larger cutting width results in approximately 6 to 9 times the cutting throughput compared to thin-cutting gates, which correspond to the prior art.
  • the small frame width of the frame saw according to the invention brings about a remarkable improvement in the cutting accuracy from the currently usual +/- 0.2 mm / lamella to +/- 0.1 mm / lamella. This improvement is due to the smaller number of saws to be clamped and the lower tendency of the narrower frame to deform, which allows the clamping force per saw to be increased to 10,000 Newtons per saw blade.
  • the frame frame saw shown in the drawings consists essentially of the crank frame 16, the guide box 18 and a plurality of individual frame 3 for receiving saw blades 6, which are hydraulically or mechanically positioned and tensioned.
  • the gate frame 3 is fastened between the lower 4 and upper 5 gate frame supports, with play-free guidance in guide strips 1 being ensured by the sliding blocks 2 attached to the gate frame supports.
  • the gate frame can be guided from above or preferably from below.
  • the lower gate frame support 4 is articulated by means of an upper connecting rod bolt 7 and a joint bearing 8 with a connecting rod 9.
  • the connecting rod 9 is connected at its lower end via a lower connecting rod bearing 11 and 12 to a corresponding (corresponding) crankshaft crank 10 of a crankshaft 10A.
  • crankshaft 10A is driven at one end by a drive element 17.
  • various design changes can be made within the scope of the invention.
  • Three-phase, asynchronous or synchronous motors can act as drive elements 17.
  • the crankshaft 10A has six crankshaft crankings 10, the relative positions of which can be seen from FIGS. 1 and 1a.
  • the cranks are offset from one another by 60 °, preferably 120 °.
  • Each crankshaft crank 10 is assigned a gate frame 3 with a guide unit.
  • the crankshaft 10A consists of exchangeable individual elements, each of which forms a crankshaft crank 10, which crankshaft crankings 10 are each connected to one another by means of a torsionally rigid, flexible coupling 15.
  • a feed unit consisting of parts 19-23 is used to transport workpieces 25 during the cutting process.
  • This consists of an eccentric shaft 19 driven by a belt 23, which moves a pawl feed device 21 via a push rod 20, which generates a discontinuous feed required for a perfect sawing process.
  • a hold-down chain 24 serves to increase the frictional connection between workpiece 25 and feed chain 22.
  • crank frame 16 All the main bearings 13 and 14 of the crankshaft 10A and bearings for the necessary auxiliary drives are contained in a crank frame 16.
  • a comparable frame saw that corresponds to the state of the art would only achieve a permanent feed speed of 0.8 m / min with four oak friezes of the same size under these conditions.
  • the working width of such a frame saw, which is part of the prior art, is usually 150 mm, and the work output is therefore 1.6 m2 / min.
  • the saw cut accuracy is +/- 0.15 mm / lamella (softwood) in the frame saw according to the invention described by way of example.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sawing (AREA)
EP96890058A 1995-04-24 1996-03-27 Scie à châssis à plusieurs cadres Withdrawn EP0739696A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT699/95 1995-04-24
AT69995A AT402271B (de) 1995-04-24 1995-04-24 Rahmengattersäge

Publications (1)

Publication Number Publication Date
EP0739696A1 true EP0739696A1 (fr) 1996-10-30

Family

ID=3497489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890058A Withdrawn EP0739696A1 (fr) 1995-04-24 1996-03-27 Scie à châssis à plusieurs cadres

Country Status (2)

Country Link
EP (1) EP0739696A1 (fr)
AT (1) AT402271B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1767319A1 (fr) * 2005-09-27 2007-03-28 Berry Finance Nv Machine pour créer des joints dans des panneaux et/ou pour découper des carreaux à partir de panneaux ainsi que procédés correspondants
CN101122323B (zh) * 2007-09-10 2010-06-02 江苏双达隔膜泵制造有限公司 曲轴为组合式曲柄销轴结构的多支点曲柄机构
CN101122324B (zh) * 2007-09-10 2010-06-09 江苏双达隔膜泵制造有限公司 曲轴为组合式偏心轮轴结构的多支点曲柄机构
CN102899065A (zh) * 2011-07-29 2013-01-30 中国石油化工股份有限公司 一种烯烃的生产方法
CN106594211A (zh) * 2016-12-29 2017-04-26 江苏科选环境科技有限公司 一种多幅偏心盘组的曲轴传动机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130497C (fr) *
DE285325C (fr) *
DE103227C (fr) *
DE374446C (de) * 1923-04-24 Ludwig Oertling Mehrfachsaegegatter
DE2055216A1 (de) * 1970-11-06 1972-05-18 Rambelli Mario Maschine zum Schneiden bzw. Sägen von Steinblocken, insbesondere von Marmerblöcken.
DE2639369A1 (de) * 1976-09-01 1978-03-02 Gomez Luis Castro Mehrfachsaegemaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1256424A (fr) * 1960-05-06 1961-03-17 Machine à scier, notamment pour pierre et matériaux similaires
DE2318820C3 (de) * 1973-04-13 1981-07-23 Kockums Industri AB, Malmö Gattersägemaschine
US3929048A (en) * 1974-11-11 1975-12-30 John W Mcgehee Reciprocating gang saw
SU616124A1 (ru) * 1976-12-06 1978-07-25 Вологодский Политехнический Институт Лесопильна рама
DE2721842C2 (de) * 1977-05-13 1984-11-22 Maschinenfabrik Esterer AG, 8262 Altötting Gattersägemaschine mit Massenausgleich
IT1187497B (it) * 1985-01-25 1987-12-23 B M Snc Off Doppio telaio multilame a movimenti alternativi unidirezionali contrapposti per il con lame diamantate di lastre sottili di graniti,marmi o agglomerati

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130497C (fr) *
DE285325C (fr) *
DE103227C (fr) *
DE374446C (de) * 1923-04-24 Ludwig Oertling Mehrfachsaegegatter
DE2055216A1 (de) * 1970-11-06 1972-05-18 Rambelli Mario Maschine zum Schneiden bzw. Sägen von Steinblocken, insbesondere von Marmerblöcken.
DE2639369A1 (de) * 1976-09-01 1978-03-02 Gomez Luis Castro Mehrfachsaegemaschine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Classification internationale des brevets", 1989, CARL HEYMANS VERLAG KG, MÜNCHEN, XP002010352 *
"Classification internationale des brevets", 1989, CARL HEYMANS VERLAG KG, MÜNCHEN, XP002010353 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1767319A1 (fr) * 2005-09-27 2007-03-28 Berry Finance Nv Machine pour créer des joints dans des panneaux et/ou pour découper des carreaux à partir de panneaux ainsi que procédés correspondants
CN101122323B (zh) * 2007-09-10 2010-06-02 江苏双达隔膜泵制造有限公司 曲轴为组合式曲柄销轴结构的多支点曲柄机构
CN101122324B (zh) * 2007-09-10 2010-06-09 江苏双达隔膜泵制造有限公司 曲轴为组合式偏心轮轴结构的多支点曲柄机构
CN102899065A (zh) * 2011-07-29 2013-01-30 中国石油化工股份有限公司 一种烯烃的生产方法
CN102899065B (zh) * 2011-07-29 2015-03-11 中国石油化工股份有限公司 一种烯烃的生产方法
CN106594211A (zh) * 2016-12-29 2017-04-26 江苏科选环境科技有限公司 一种多幅偏心盘组的曲轴传动机构

Also Published As

Publication number Publication date
AT402271B (de) 1997-03-25
ATA69995A (de) 1996-08-15

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