EP4067028A1 - Poste de dressage et dispositif doté d'un poste de dressage - Google Patents

Poste de dressage et dispositif doté d'un poste de dressage Download PDF

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Publication number
EP4067028A1
EP4067028A1 EP22163393.6A EP22163393A EP4067028A1 EP 4067028 A1 EP4067028 A1 EP 4067028A1 EP 22163393 A EP22163393 A EP 22163393A EP 4067028 A1 EP4067028 A1 EP 4067028A1
Authority
EP
European Patent Office
Prior art keywords
milling
station
wood
pieces
dressing
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.)
Pending
Application number
EP22163393.6A
Other languages
German (de)
English (en)
Inventor
Hans-Martin Junglinger
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.)
Junginger Hans Martin
Original Assignee
Individual
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
Priority claimed from DE102021108292.7A external-priority patent/DE102021108292A1/de
Priority claimed from DE202021101743.0U external-priority patent/DE202021101743U1/de
Application filed by Individual filed Critical Individual
Publication of EP4067028A1 publication Critical patent/EP4067028A1/fr
Pending 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
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/16—Making finger joints, i.e. joints having tapers in the opposite direction to those of dovetail joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C9/00—Multi-purpose machines; Universal machines; Equipment therefor
    • B27C9/04—Multi-purpose machines; Universal machines; Equipment therefor with a plurality of working spindles

Definitions

  • the invention relates to a dressing station for a device for the production of wooden, rod-like or plate-like components assembled at the end by finger joints, and a device with such a dressing station.
  • the wood fed to a device When processing wood that is usually rod-like or plate-like, the wood fed to a device must be regularly cut off in a dressing station on the input side with unpredictable length sections, which means that wood of the same cross-section and usually different lengths are produced. Finger joints are milled into the two front sides of the wooden poles, and glue is applied to them so that the milled wooden poles are joined and pressed with their front sides to form a continuous strand of wood in a pressing device downstream of the dressing station. Wooden poles of a desired length are then cut off at one end of the wooden strand, while further wooden poles with finger-jointed end faces are attached at the opposite end. The pressing of the finger-jointed wooden poles into a continuous strand of wood takes place.
  • the wood material represents a large proportion of the total price for products made from the cut finger-jointed wood, for example squared timber, glued laminated timber or laminated beams.
  • the throughput of wood through the device determines the efficiency of the device, with the necessary compression of the wood being a significant factor Time is a factor, with fixed specifications that have to be met in terms of strength and quality.
  • a pressing device for a device for the production of wood strands from glued finger-jointed wood comprises an entry area through which the pieces of wood can be fed and in which a feed unit for moving the pieces of wood in a feed direction is arranged.
  • the device also comprises successive clamping and pressing units which are intended for clamping and pressing a strand of wood consisting of at least two pieces of wood provided with finger-joint profiles on the front side and glued. At least one of the clamping and pressing units is arranged to be displaceable in the feed direction and in the opposite direction.
  • the entry area includes two clamping and pressing units, which are followed by the feed unit in the feed direction.
  • a braking device arranged above the conveyor belt is described here, which presses and holds the workpieces against drivers and supports of the conveyor belt in order to generate the necessary holding force for the processing units.
  • the processing units are designed as milling spindles, as pre-slitting spindles or as cross-cut saws.
  • the processing units are arranged one behind the other, and the end processing machine also includes two milling spindles, which are arranged on opposite sides of the conveyor belt. The milling spindles each mill one end face of a workpiece.
  • a finishing line which comprises a conveyor section and a profiling station.
  • the profiling station includes motor-driven rotating knives that work the end of the wood during transport to provide the end with a groove and/or tongue.
  • an applicator Immediately downstream of the profiling station is an applicator which applies a coating of adhesive component to the end of the piece of wood passing through it.
  • the device comprises an endlessly circulating conveyor belt with carriers arranged at a distance from one another transversely to the conveying direction. On both sides of the conveyor belt, finger joint milling and gluing devices are arranged offset to one another.
  • At least one cross conveyor is arranged above the conveyor belt, which conveys the slat sections from one side of the conveyor belt to the opposite side.
  • a device for connecting blocks is known.
  • the blocks to be joined are fed to a finger jointing line on an intermittent feed conveyor where they are lined up side by side with one end against a stop.
  • the blocks are then conveyed to a first mill where a finger joint is milled into one end.
  • a shuttle conveyor moves the blocks further through the finger jointing line, the unmilled ends of the blocks are caught by a shuttle conveyor, which pushes the blocks across the conveyor belt.
  • the other end is then processed by a second milling machine.
  • a production line for elongated wooden workpieces which comprises an input chain conveyor, a turning and feeding device, two processing units, a main conveyor chain, a diagonal chain conveyor, two auxiliary chain conveyors, an outlet rotor, an angle feeding unit, an assembling unit, a continuous press and a saw. Processing takes place continuously and synchronously through the entire line.
  • the elongated wooden workpieces clamped in the spring clamping devices pass a first processing device which consists of a miter saw for aligning the front edges and profile milling cutters for milling the teeth into the aligned front surface.
  • a wooden workpiece is processed on its front side in the processing device.
  • the object of the invention is to create a dressing station that allows an improved throughput of milled timber.
  • Another object of the invention is to provide an apparatus with improved throughput including such a trimming station.
  • the invention is based on a dressing station for a device for the production of wooden, rod-like or plate-like construction elements assembled at the end by finger joints.
  • the dressing station comprises at least one first and at least one second milling station, which are each spaced apart from one another in a feed direction and are set up to create end-face finger joint profiles on the two ends of individual pieces of wood to be joined.
  • the dressing station also includes means for advancing the individual pieces of wood to be processed in an advancing direction at least to the first of the two milling stations, transversely to the advancing direction between the at least one first and at least one second milling station and away from the at least one second milling station.
  • each of the milling stations is prepared in each case in order to synchronously and simultaneously form end-side finger joint profiles on at least two individual pieces of wood aligned with their longitudinal extent parallel to one another at the respective milling station.
  • the individual pieces of wood are in particular aligned with their side edges parallel to a defined stop edge, and are therefore advantageously also aligned parallel to one another. Furthermore, the end edge of each piece of wood is aligned with a stop edge at the milling station, so that the longitudinal edge and the end edge are at a well-defined angle to one another.
  • the front edge is advantageously aligned perpendicular to the longitudinal edge.
  • the parallel processing of individual pieces of wood in the dressing station allows an exact alignment of the side edges of each of the individual pieces of wood to each other and an exact and reproducible setting of the angle between the respective front side and long side. This means that rejects can be reduced and the pressing result can be improved in a subsequent pressing station.
  • the throughput through the dressing station can be at least doubled when at least two individual pieces of wood are milled at the same time at one milling station.
  • the dressing station can be designed as a cycle chain system, which processes pieces of wood in fixed work cycles.
  • the dressing station can also be provided without cycle chain operation.
  • a milling unit can be arranged in the at least first and in the at least second milling station, with which at least two pieces of wood can be milled synchronously and simultaneously on the face side.
  • more than one milling unit can also be provided in one or more of the milling stations.
  • the milling unit can be designed in such a way that a milling set of the milling unit is provided with a width which corresponds at least to twice the width of the wood which is trimmed in the dressing station. Milling units are usually designed for specific maximum widths of individual timbers that are to be milled. Such an arrangement can advantageously be widened accordingly.
  • a milling unit can have several milling cutter sets, which are designed for maximum widths of individual pieces of wood, with the milling cutter sets processing the corresponding pieces of wood synchronously.
  • the milling unit can have several sets of milling cutters, which are provided with a width that corresponds to at least twice the width of the wood.
  • At least one of the milling units can have at least two sets of milling cutters, with which at least two pieces of wood can be milled synchronously and at the same time on the face side.
  • the cutter sets can be moved synchronously for milling, for example from top to bottom or vice versa.
  • the wood can be elongated elements such as slats, boards, planks, squared timber or the like.
  • At least one of the milling units can have a common drive for at least two sets of milling cutters of the respective milling unit.
  • the cutter sets can be moved synchronously by means of a common drive or feed, for example a common shaft or the like.
  • the milling stations can each have at least one clamping unit with which each of the pieces of wood can be individually fixed in front of the milling stations.
  • the pieces of wood can be held stably in their position on the cutter sets during the milling process. This allows tolerances in the wood to be compensated, which saves pre-planing the wood.
  • the reference edge against which the long side of the respective wood is aligned serves as a zero line for the alignment of the wood, just as a reference edge for the face of the respective wood serves as a zero line for the face.
  • this stop edge can be a table side of the conveyor between the milling stations in the dressing station.
  • a device for applying glue to at least one of the two milled finger joint profiles of the two pieces of wood can be provided at or adjacent to the at least first and/or at least second milling station.
  • a stable and permanent adhesive connection can be achieved in a later pressing process of the wood.
  • a milling station for a trimming station, with a milling unit which is prepared in order to synchronously form end-side finger joint profiles on at least two pieces of wood which are aligned parallel to one another with their longitudinal extent.
  • the timbers are aligned parallel to one another with their side edges.
  • the milling station allows an increased throughput of wood in a dressing station.
  • a device for the production of wooden, rod-like or plate-like components assembled at the end via finger joints end-side finger joint profiles at the two ends to be connected to individual pieces of wood set up milling stations.
  • the device has a pressing station intended for the frontal joining and pressing of the individual pieces of wood, which are provided with finger-joint profiles on the frontal side.
  • the device has means for advancing the individual pieces of wood to be processed, starting from an input side via the dressing station to the pressing station.
  • the at least first and at least the second milling station are each prepared in order to synchronously form finger joint profiles on the end faces of at least two individual pieces of wood that are aligned parallel to one another with their longitudinal extent at the respective milling station.
  • the timbers are aligned parallel to one another with their side edges.
  • the throughput through the device can be at least doubled due to the increased throughput through the dressing station.
  • the dressing station can be designed as a cycle chain system, which processes individual pieces of wood in fixed work cycles.
  • a chop saw can be provided on the input side, which separates the wood at defective points.
  • a storage area is expediently provided between the cross-cut saw and the first milling station in order to have sufficient pieces of wood available for an increased throughput in the dressing station.
  • the storage area can be designed, for example, as a transverse conveyor for wood.
  • a milling unit can be arranged in the at least first and in the at least second milling station, with which at least two pieces of wood can be milled synchronously on the face side.
  • the milling unit can be designed in such a way that a milling set of the milling unit is provided with a width which corresponds at least to twice the width of the wood which is trimmed in the dressing station.
  • the milling unit can have at least two sets of milling cutters.
  • Milling units are usually designed for specific maximum widths of individual timbers that are to be milled. Such an arrangement can advantageously be widened accordingly.
  • At least one of the milling units can have at least two sets of milling cutters, with which at least two pieces of wood arranged parallel to one another can be milled on the face side.
  • the cutter sets can be moved synchronously.
  • At least one of the milling units can have a common drive for at least two sets of milling cutters of the respective milling unit.
  • the cutter sets can be moved synchronously by means of a common shaft.
  • the milling unit can have a drivable belt pulley from which a shaft end protrudes in the axial direction on each side, on each of which a milling set is arranged.
  • a drivable belt pulley from which a shaft end protrudes in the axial direction on each side, on each of which a milling set is arranged.
  • annular disk can be arranged laterally on a shaft and the milling cutter sets can be mounted on the shaft from one side, with the milling cutter sets being advantageously spaced apart from one another by intermediate rings.
  • the milling cutters can also be driven directly by a motor.
  • At least the means for advancing the individual pieces of wood to be processed can be designed as a cycle chain system.
  • the increased throughput of timber can be moved through the device to the pressing station at a suitable rate.
  • An advantageous pressing station is in the DE 202020105783 U1 described and allows a particularly high throughput with high quality of the connection areas between the wood.
  • Other types of pressing stations for example with continuous conveyance of the wood, are also conceivable.
  • figure 1 shows a block diagram of an exemplary embodiment of a device 200 for the production of wooden, rod-like or plate-like components assembled at the end via finger joints according to an exemplary embodiment of the invention with a chop saw 230, a dressing station 100 with two milling stations 110, 140 and a pressing station 240.
  • figure 2 shows the dressing station 100 in plan view in detail. The two figures are described together below.
  • the chop saw 230 is used to separate defective areas from individual pieces of wood, which are to be fed to the dressing station 100 .
  • pieces of wood 12, 14 of different lengths are produced, depending on the location of a defect.
  • the individual pieces of wood 12, 14 are milled on both of their end faces so that finger joints are formed, optionally provided with glue and joined in the pressing station 240 to form a structural element made up of pieces of wood 12, 14 that are pressed together at the end and glued together.
  • the pieces of wood 12 , 14 are transported to a transverse conveyor 212 , which extends in segments between the chop saw 230 and the pressing station 240 .
  • a longitudinal conveyor 216 is arranged between segments of the transverse conveyor 212 and is arranged between the milling stations 110 , 140 .
  • a feed direction 202 is provided on the transverse conveyor 212 and a feed direction 206 is provided on the longitudinal conveyor 216 , which is directed perpendicularly to the feed direction 202 .
  • the individual pieces of wood 12 , 14 are arranged on the transverse conveyor 212 with their longitudinal extent 16 perpendicular to the feed direction 202 of the transverse conveyor 212 .
  • the transverse conveyor 212 has corresponding conveying means for moving the pieces of wood 12, 14, for example chains or rollers or the like, which form a transport table which is delimited by table edges 106 and 108.
  • the table side 106, 108 of the respective milling station 110, 140 serves as a stop for aligning the end faces of the pieces of wood 12, 14, so that the end faces and the long sides are precisely aligned and a defined, preferably vertical, angle between the end face and the long side of each piece of wood 12, 14 is set.
  • Other means of aligning the timbers 12, 14 can also be used, as long as they are suitable for aligning the timbers 12, 14 in the same way in a reproducible manner. This facilitates the later pressing together of the pieces of wood 12, 14 in the subsequent pressing station 240 at their end faces.
  • the pieces of wood 12, 14 are transported on the longitudinal conveyor 216 in the direction of their longitudinal extent 16, i.e. the longitudinal extent 16 is parallel to the feed direction 206 of the longitudinal conveyor 216.
  • Stop means are arranged in front of each of the milling stations 110, 140, with which the pieces of wood 12, 14 are brought into contact with their longitudinal side in the feed direction 202 of the transverse conveyor 212 before they are milled with their end faces facing the respective milling station 110, 140 will.
  • the milling stations 110, 140 shown are each prepared in order to synchronously form finger-joint profiles on the end faces of at least two individual pieces of wood 12, 14, which are aligned parallel to one another with their longitudinal extent 16.
  • each of the milling stations 110, 140 In front of each of the milling stations 110, 140 are longitudinal conveyor units 214, 218, with which the pieces of wood 12, 14 can be moved up to the respective milling station 110, 140 for processing. Alternatively or additionally, it can also be provided that the milling unit of the respective milling station 110, 140 can be moved up to the pieces of wood 12, 14, which is figure 2 is indicated by a directional arrow 204.
  • the longitudinal conveyor 216 can be implemented in the usual way by means of a roller conveyor and the transverse conveyor 212 with rollers, belts, chains and the like.
  • the pressing station 240 following the dressing station 100 has an entry area 242 through which the pieces of wood 12, 14 can be fed by the transverse conveyor 212.
  • the pieces of wood 12, 14 are pressed together at the ends and transported in the direction of transport 252.
  • the Figures 3 to 5 12 show different phases of the movement of logs 12, 14 in the dressing station 100 of FIG figure 2 .
  • the pieces of wood 12, 14 are of the same length in the illustrated embodiment, they can also be of different lengths.
  • more than two individual pieces of wood per milling station 110, 140 can be synchronously processed with the milling unit 120 ( Figures 3-7 ) are milled.
  • figure 3 shows a first method step in the transfer of two individual pieces of wood from a chop saw 230 to the first milling station 110, in which the pieces of wood 12, 14 have been moved with the cross conveyor 212 with their front sides along the edge of the table 106 to the first milling station 110 and in the working area of the milling station 110 have arrived. There, the two pieces of wood 12, 14 are stopped in an aligned manner, each clamped with a separate clamping device 112, 114 and milled synchronously with a milling set 122, 124 of the milling unit 120. In the meantime, further pieces of wood 12, 14 treated by the chop saw 230 are delivered.
  • the milling station 110 can have a milling unit 120 with a milling set 122 which is provided with a width which corresponds at least to twice the width of the wood which is trimmed in the dressing station 100 .
  • a milling cutter set 122 can be milled synchronously with a milling cutter set 122.
  • figure 4 shows a further process step after the removal of the timbers 12, 14 milled on one side from the first milling station 110 during the transfer of the timbers 12, 14 milled on one side by means of the longitudinal conveyor 216 to the side of the second milling station 140, so that the opposite end face of the timbers 12, 14 can be edited.
  • the new, unmilled pieces of wood 12, 14 are brought with their end faces along the table edge 106 to the first milling station 110, while the pieces of wood 12, 14 milled on one side are moved to the opposite table edge 108 and along it to the second milling station 140, in order to to be milled.
  • figure 5 shows a further process step, in which the pieces of wood 12, 14 that have been completely milled on both end faces are transported with the cross conveyor 212 from the second milling station 140 in the direction of the pressing station 240 ( figure 1 ) can be moved. Meanwhile, the next pair of timbers 12, 14 milled on one side is moved via the longitudinal conveyor 216 from the side of the first milling station 110 to the side of the second milling station 140, while unmilled timber is moved with the transverse conveyor 212 in the direction of the first milling station 110.
  • figure 6 shows a front view of the milling station 110 with two sets of milling cutters 122, 124 on the milling unit 120 according to an exemplary embodiment of the invention.
  • the milling unit 120 can move both sets of milling cutters 122, 124 synchronously via a single shaft, for example from top to bottom.
  • figure 7 12 shows a front view of the milling station 110 with a single set of milling cutters 126 on the milling unit 126 according to a further exemplary embodiment of the invention.
  • the milling set 126 is at least as wide, preferably wider, than the end faces of two adjacent pieces of wood into which finger joints are to be milled at the milling station 110 .
  • the pieces of wood can be processed synchronously with the cutter set 126.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
EP22163393.6A 2021-03-31 2022-03-21 Poste de dressage et dispositif doté d'un poste de dressage Pending EP4067028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021108292.7A DE102021108292A1 (de) 2021-03-31 2021-03-31 Zurichtstation und vorrichtung mit einer zurichtstation
DE202021101743.0U DE202021101743U1 (de) 2021-03-31 2021-03-31 Zurichtstation und Vorrichtung mit einer Zurichtstation

Publications (1)

Publication Number Publication Date
EP4067028A1 true EP4067028A1 (fr) 2022-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22163393.6A Pending EP4067028A1 (fr) 2021-03-31 2022-03-21 Poste de dressage et dispositif doté d'un poste de dressage

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EP (1) EP4067028A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800470A1 (de) * 1967-10-03 1969-10-02 Nissen Richard Bent Verfahren zur automatischen Leimverbindung mittels Keilzinken und Maschine zur Ausfuehrung des Verfahrens
DE2054807A1 (de) 1970-11-07 1972-05-10 Dimter, Erwin, 7918 Illertissen Endenbearbeitungsmaschine
US3802986A (en) 1972-03-23 1974-04-09 Publishers Paper Co Method and means for making a composite board from lumber pieces
DE3046319A1 (de) 1980-12-09 1982-07-15 Ernst Josef 5562 Wallscheid Meeth Vorrichtung zum stirnseitigen zusammenfuegen von leistenabschnitten unterschiedlicher laenge
US5617910A (en) 1995-05-31 1997-04-08 Bend Wood Products, Inc. Position control apparatus and method for controlling the movement of a block in a woodworking machine
US20030024363A1 (en) * 2001-08-02 2003-02-06 Michael Weinig Aktiengesellschaft Machine and method for machining workpieces of wood, plastic material or the like
AT505211A2 (de) * 2007-05-11 2008-11-15 Grecon Dimter Holzoptimierung Vorrichtung zur herstellung von durch verleimte keilzinkenverbindungen gekennzeichneten holzsträngen
EP3090849A1 (fr) 2015-05-06 2016-11-09 Gregor Ledinek Ligne de production pour jonction de bout en bout longitudinale continue de pièces en bois oblongues avec aboutage à entures multiples verticales
DE202020105783U1 (de) 2020-10-08 2020-10-19 Hans-Martin Junginger Presseinrichtung für eine Vorrichtung zur Herstellung von Holzsträngen aus verleimten keilgezinkten Hölzern

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800470A1 (de) * 1967-10-03 1969-10-02 Nissen Richard Bent Verfahren zur automatischen Leimverbindung mittels Keilzinken und Maschine zur Ausfuehrung des Verfahrens
DE2054807A1 (de) 1970-11-07 1972-05-10 Dimter, Erwin, 7918 Illertissen Endenbearbeitungsmaschine
US3802986A (en) 1972-03-23 1974-04-09 Publishers Paper Co Method and means for making a composite board from lumber pieces
DE3046319A1 (de) 1980-12-09 1982-07-15 Ernst Josef 5562 Wallscheid Meeth Vorrichtung zum stirnseitigen zusammenfuegen von leistenabschnitten unterschiedlicher laenge
US5617910A (en) 1995-05-31 1997-04-08 Bend Wood Products, Inc. Position control apparatus and method for controlling the movement of a block in a woodworking machine
US20030024363A1 (en) * 2001-08-02 2003-02-06 Michael Weinig Aktiengesellschaft Machine and method for machining workpieces of wood, plastic material or the like
AT505211A2 (de) * 2007-05-11 2008-11-15 Grecon Dimter Holzoptimierung Vorrichtung zur herstellung von durch verleimte keilzinkenverbindungen gekennzeichneten holzsträngen
EP3090849A1 (fr) 2015-05-06 2016-11-09 Gregor Ledinek Ligne de production pour jonction de bout en bout longitudinale continue de pièces en bois oblongues avec aboutage à entures multiples verticales
DE202020105783U1 (de) 2020-10-08 2020-10-19 Hans-Martin Junginger Presseinrichtung für eine Vorrichtung zur Herstellung von Holzsträngen aus verleimten keilgezinkten Hölzern

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