EP4228871A1 - Verfahren zum fertigen länglicher werkstücke sowie fertigungseinrichtung - Google Patents
Verfahren zum fertigen länglicher werkstücke sowie fertigungseinrichtungInfo
- Publication number
- EP4228871A1 EP4228871A1 EP21794114.5A EP21794114A EP4228871A1 EP 4228871 A1 EP4228871 A1 EP 4228871A1 EP 21794114 A EP21794114 A EP 21794114A EP 4228871 A1 EP4228871 A1 EP 4228871A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpieces
- length
- workpiece
- starting
- cut
- 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
Links
Classifications
-
- 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
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
- B27M3/002—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected at their ends
Definitions
- the invention relates to a method and a manufacturing device for manufacturing elongated workpieces.
- oblong workpieces are used. These can, for example, be wooden profiles for the production of window frames, furniture parts or other components.
- long raw bars are first formed by joining individual shorter starting workpieces, in particular by means of a dovetail joint, to form a long raw bar.
- Such raw rods have a defined length in order to enable uniform handling, in particular during transport, storage and further processing.
- the raw bars are usually cut to the required workpiece lengths for the production of a large number of products. The cutting is optimized with regard to the least amount of material waste.
- the workpieces are therefore not cut to size in an object-related workpiece sequence, so that after cutting, the workpieces have to be sorted according to the products to be manufactured.
- Expensive sorting machines have to be used for automated sorting, and manual sorting means a lot of work.
- the use of the raw bars requires a certain unavoidable
- the invention is based on the object of proposing a method by means of which a reduction in production costs and material waste is made possible in the production of elongated workpieces. Furthermore, it is the object of the invention to propose a production device which enables the production of elongate workpieces with minimal waste of material.
- a method of manufacturing elongate workpieces is defined in claim 1 .
- a manufacturing facility is defined in claim 10 .
- Subclaims relate to specific embodiments.
- the object is achieved by a method for manufacturing elongated workpieces, in particular workpieces made of wood, wooden material, plastic, composite material or the like, for subsequent further processing to at least one object, the method comprising: feeding elongated starting workpieces to a Device for connecting the starting workpieces, forming a permanent connection between the starting workpieces, the starting workpieces being connected to one another at least on their end faces in order to form an elongate endless workpiece, cutting several elongate workpieces to length from the endless workpiece, the elongate workpieces for the at least one obj ect be cut to length from the endless workpiece in a sequential workpiece sequence, and carry out a longitudinal machining process that involves cutting on the starting workpieces and/or on the endless workpiece and/or on the workpieces that have been cut to length.
- an additional sorting of the cut workpieces after production can be omitted. Since the elongate workpieces are also machined by the longitudinal machining process, the workpieces can be machined into a final shape and can thus be used immediately after the manufacturing process in the correct order and, if necessary, in the correct form for producing the object. Because the elongate workpieces are cut to length from the endless workpiece, a large number of elongate workpieces can be formed one after the other in a continuous manufacturing process. In this case, an endless workpiece is not to be understood as a workpiece with an infinite workpiece length in the mathematical sense, but rather a workpiece that can have any length as a result of the continuous connection of the starting workpieces.
- a flexible method can be provided, by means of which workpieces can be successively cut to any defined workpiece length from the endless workpiece, depending on the object to be subsequently produced.
- the process can be used to produce workpieces of different lengths for different objects.
- a particularly preferred development of the method can provide that a large number of elongate workpieces are cut to length from the endless workpiece for a number of objects to be subsequently produced, with the workpieces being cut to length in an object-related workpiece sequence, in which the elongate workpieces provided for each object to be produced subsequently are successively cut to length from the endless workpiece.
- this process can be used to precisely cut the workpiece lengths from the endless workpiece one after the other. which are required for the manufacture of the respective object. In this way, a minimal waste of material can be achieved or even completely avoided.
- the workpieces for each of the objects to be produced subsequently can be manufactured in a sequential order, so that the workpieces are available in the object-related order after the manufacturing process. This can, for example, enable a cost-effective small series production of objects or be advantageous in the case of frequent changes in the production of different types of objects.
- An advantageous embodiment of the method can also provide for the elongate workpieces to be fed to a storage facility and/or at least one further processing device after cutting to length or after the longitudinal machining process involving cutting in the object-related, successively cut to length workpiece sequence.
- One such further processing device can be, for example, a continuous processing device, a CNC processing device or a CNC processing center.
- the starting workpieces are connected to one another by the device for connecting the starting workpieces at their end faces by a wedge-jointed profile.
- An advantageous further development of the method can also provide that the starting workpieces and/or the endless workpiece and/or the workpieces cut to length are fed at a feed rate of 6 to 15 m/min to a machining device for lengthwise machining.
- the process can be carried out at this relatively slow feed rate. This enables a low cycle output, which means that lower investment costs for the production facility that carries out the method can be achieved.
- the endless workpiece or the workpieces cut to length are coated with a coating material after the longitudinal machining process involving cutting.
- This coating material can be, for example, a veneer or a foil, which is applied to the surface for optical reasons and/or for protection. That Coating material can be applied in a continuous process, which can enable rapid and cost-optimal coating.
- the cut-to-length workpieces can be brought into a final shape by the method, which makes it possible for the workpieces to be used directly for the manufacture of an object to be manufactured subsequently.
- the cutting longitudinal machining process can be carried out on the endless workpiece and/or the elongate workpieces in a direct chronological sequence after the connection of the starting workpieces and/or the cutting to length of the workpieces.
- the longitudinal machining process by cutting can be carried out on the endless workpiece and/or the elongate workpieces without a drying process after the starting workpieces have been connected.
- the method steps of connecting the starting workpieces, cutting the elongate workpieces to length and carrying out the cutting longitudinal machining process are carried out in a coherent production process.
- the process steps of connecting the starting workpieces, cutting the elongated workpieces to length, executing the longitudinal machining process that takes the cutting action and machining the elongated workpieces by the at least one further machining device in a coherent manner Manufacturing process are performed.
- a preferably automated method can be formed, which enables time- and cost-optimized production of the elongated workpieces.
- the task is accomplished by a manufacturing device for manufacturing elongated workpieces, in particular workpieces made of wood, wooden material, plastic, composite material or the like, with a conveyor device for bringing about a conveying movement, with a device for permanently connecting elongated starting workpieces to form an endless workpiece and with a cutting device for cutting the endless workpiece to length into elongate workpieces, with at least one processing device for cutting lengthwise processing being provided before and/or following the device for permanently connecting the elongate starting workpieces, and a control device being provided which is set up to carry out a method according to to control one of the previously described forms of execution.
- a production device is thereby formed, by means of which several elongated workpieces for different objects to be produced subsequently can be cut to length in a successive workpiece sequence and at the same time longitudinally machined by cutting.
- the production facility enables the production in an object-related workpiece sequence, which eliminates the need for additional sorting of the cut-to-length workpieces after production.
- the workpieces can thus be used immediately after the manufacturing process in the correct sequence and, if necessary, in a machined final form for the manufacture of the objects to be subsequently manufactured. Due to the fact that the workpieces are cut to length directly from the endless workpiece, it is also possible to cut exactly the workpiece lengths from the endless workpiece that are required for the production of the objects to be subsequently produced. In this way, a most minimal Material waste or a complete avoidance of material waste can be achieved.
- Such a production facility can be advantageous, for example, for the production of small batches of objects or when there are frequent changes in the production of different types of objects.
- An advantageous further development of the production device can provide that at least one further processing device for processing the cut-to-length workpieces is provided downstream of the trimming device or downstream of the at least one processing device.
- This further processing device can in particular be designed as a continuous processing device, a CNC processing device or a CNC processing center. In this way, immediately after the workpieces have been cut to length, further processing of the workpieces is made possible in order to process them in a further processing step, for example into a final shape.
- Fig. 1 shows a schematic view from above of an exemplary embodiment of a production device according to the disclosure
- Fig. 2 is a schematic representation of
- FIG. 1 shows a schematic view from above of an exemplary embodiment of a production device 10 according to the disclosure.
- This manufacturing device 10 is provided for processing and manufacturing elongate workpieces 27, in particular elongate workpieces 27 made of wood, wood material, plastic, composite material or the like.
- elongate workpieces 27 are used, for example, as profile strips, decorative strips or the like, which are used, inter alia, in the manufacture of furniture, windows or components.
- the production device 10 has an essentially L-shaped arrangement. This U-shaped arrangement is only an exemplary arrangement. Likewise, the production device 10 can be arranged in a line, for example.
- the production facility 10 can have a raw material store 12 which accommodates elongate starting workpieces 13 for feeding to the production facility 10 .
- the starting workpieces 13 can be fed to the production facility 10 automatically or manually from the raw material store 12 .
- the starting workpieces 13 can be so-called raw bars act with a defined workpiece length. These can have a length of about 5 to 6 m, for example. However, the length of the starting workpieces 13 is not limited to these lengths, and the starting workpieces 13 can also have different lengths.
- the elongate starting workpieces 13 are made in particular from solid wood. Likewise, the starting workpieces 13 can be formed by several shorter workpieces connected to one another by a finger joint and/or by several wooden lamellas joined together.
- the production device 10 has a conveying device 14 by which a conveying movement is brought about in a conveying direction F indicated by the arrows shown in FIG.
- the conveyor device 14 is designed in particular as a roller conveyor.
- the roller conveyor has transport rollers which can be driven and which provide an automated conveying movement.
- the feed speed of the conveyor device 14 depends on the length of the starting workpieces 13 . With the above-mentioned workpiece length of the starting workpieces 13 of approximately 5 to 6 m, the feed rate of the conveyor device 14 can be approximately 6 to 15 m/min. In this way, a connection process, described below, of the starting workpieces 13 can take place with a work cycle of 2 or less per minute.
- the production device 10 has a first chop saw unit 16 .
- a device 17 for connecting the starting workpieces 13 is provided downstream of the chop saw unit 16 .
- the device 17 for connecting the starting workpieces 13 is illustrated by the dashed line in FIG.
- the device 17 for connecting the starting workpieces 13 comprises a milling unit 18 , a glue application unit 19 , a pressing unit 21 and a transverse conveyor device 22 .
- the transverse conveyor 22 transports the starting workpieces 13 conveyed from the milling unit 18 to the glue application unit 19 and then to the pressing unit 21 .
- a space-saving arrangement (the U-shaped arrangement) of the production device 10 is achieved by the transverse conveyor device 22 .
- the conveyor device 14 can also be linear and the components of the device 17 for connecting the output workpieces 13 can be arranged along the linear conveyor device 14 .
- the device 17 for connecting the starting workpieces 13 joins the starting workpieces 13 to form an endless workpiece 29 , which is described in more detail below.
- a second chop saw unit 23 is provided in the conveying direction F downstream of the device 17 for connecting the starting workpieces 13, by means of which the endless workpiece 29 is cut to length into defined elongated workpieces 27.
- the second chop saw unit 23 can be connected to a control device 25 .
- the control device 25 can include a sensor unit for measuring the workpiece lengths of the workpieces 27 .
- a processing device 24 for longitudinal processing of the workpieces 27 cut to length from the endless workpiece 29 is arranged downstream of the second chop saw unit 23 in the conveying direction F.
- the cutting processing device 24 is in particular a planing device or a longitudinal profiling device. In the case of the production device 10 according to FIG.
- the cutting processing device 24 is arranged downstream of the second chop saw unit 23 in the conveying direction F, only as an example. Likewise and/or additionally, the processing device 24 can be arranged between the second cross-cut saw unit 23 and the device 17 for connecting the starting workpieces 13 and/or between the first cross-cut saw unit 16 and the device 17 for Connecting the starting workpieces 13 and/or preceding them in the conveying direction F to the first chop saw unit 16 .
- the production device 10 can also have a coating device that is not shown in detail.
- a coating material for example a veneer or a film, can be applied to the endless workpiece 29 or to the workpieces 27 cut to length by the coating device in a continuous process.
- a reservoir 26 which stores the workpieces 27 that have been cut to length from the endless workpiece 29 and machined longitudinally by metal-cutting.
- the reservoir 26 can be, for example, a pallet for transporting the elongated workpieces 27 on to a further processing device that is not shown in detail.
- the additional processing device can be designed, for example, as a continuous processing device, as a CNC processing device or as a CNC processing center.
- Such a further processing device can also be provided as an alternative to the store 26, so that the workpieces 27 cut to length are transferred from the production device 10 to this further processing device for further processing.
- the conveyor device 14 is also formed between the further processing device and the production device 10 .
- a method according to the disclosure for manufacturing the elongate workpieces 27 is described below with reference to FIG.
- the capital letters A to E in FIG. 2 assign the respective process steps to the corresponding units of the production facility 10 that carry out the respective process step in FIG.
- the end faces 28 of the starting workpieces 13 are milled by the milling unit 18 .
- the ends of the starting workpieces 13 can be cut off by the first cross-cut saw unit 16 and thus prepared or prepared for the milling process. be straightened .
- the milling unit 18 forms finger joints in particular on both end faces 28 of the starting workpieces 13 , as is shown in the detailed view in the circle in FIG. By intermeshing these wedge teeth, a permanent so-called wedge joint can be formed between the starting workpieces 13 .
- the initial workpieces 13 are moved one after the other in the conveying direction F by the transverse conveyor 22 .
- the starting workpieces 13 are moved with an end face 28 to the glue application unit 19 through which an adhesive is applied to the respective end face 28 .
- the adhesive can be a glue or adhesive.
- the starting workpieces 13 are fed one after the other by the transverse conveyor device 22 to the pressing unit 21 , which presses the starting workpieces 13 together with the end faces 28 facing one another.
- the wedge teeth formed on the end faces 28 engage in one another, so that when the adhesive dries, a permanent and resilient connection is formed between the starting workpieces 13 .
- the pressing unit 21 can optionally have a drying unit, not shown in detail, for example a blower, a heating unit or a radiation unit, which accelerates the drying process of the adhesive. In this way, the starting workpieces 13 are joined to form the endless workpiece 29 by method step C.
- the endless workpiece 29 is not in the mathematical sense as endless or.
- the endless workpiece 29 thus forms a workpiece that can have any length, as long as another starting workpiece 13 is connected to it by the device 17 for connecting the starting workpieces 13 according to method step C.
- the elongated workpieces 27 are cut to length from the endless workpiece 29 by the second chop saw unit 23 , as indicated by the vertical lines in method step D .
- These cut workpieces 27 are intended for an object to be produced subsequently, which can be, for example, a window frame, a door frame, a piece of furniture or some other structural element.
- the workpieces 27 for the object to be produced subsequently are cut to predetermined, defined workpiece lengths.
- workpieces 27 for a number of objects to be produced subsequently are cut to length from the endless workpiece 29 in a continuous manufacturing process.
- the objects to be produced can be different objects, for example door frames and window frames or the like, for which workpieces 27 of different lengths are cut to length.
- the method according to the disclosure provides that the elongate workpieces 27 are successively cut to length from the endless workpiece 29 in an object-related workpiece sequence, with the workpieces 27 cut to length for the respective object to be produced subsequently being able to have different lengths, as is the case in method steps D and E is shown .
- workpieces 27 for various below objects to be produced are provided, in the object-related workpiece sequence first all workpieces 27 for a first object to be produced subsequently are cut to length from endless workpiece 29, then all workpieces 27 for a second object to be produced subsequently, then all workpieces 27 for a third object to be produced subsequently ect etc .
- the object-related cutting to length of the workpieces 27 is carried out using a production list or production list stored in the control device 25. Parts list of objects to be manufactured below.
- the cutting longitudinal machining process is carried out on the cut-to-length workpieces 27 by the machining device 24 .
- a planing process and/or a profiling process can be carried out on the workpieces 27 .
- the cutting longitudinal machining process can also be carried out before method step A and/or after method step A and/or before method step C.
- the process steps of connecting the starting workpieces 13 , cutting the workpieces 27 to length and the longitudinal machining process involving cutting can be carried out in immediate succession, preferably without a drying process after the connecting of the starting workpieces 13 .
- the workpieces 27 that have been cut to length are fed to the supply store 26 in the object-related workpiece sequence.
- the workpieces 27 cut to length can be fed to the further processing device, for example the continuous processing device, CNC processing device or the CNC processing center, for one or more further processing operations.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020127141.7A DE102020127141A1 (de) | 2020-10-15 | 2020-10-15 | Verfahren zum Fertigen länglicher Werkstücke sowie Fertigungseinrichtung |
| PCT/EP2021/078122 WO2022078992A1 (de) | 2020-10-15 | 2021-10-12 | Verfahren zum fertigen länglicher werkstücke sowie fertigungseinrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4228871A1 true EP4228871A1 (de) | 2023-08-23 |
| EP4228871B1 EP4228871B1 (de) | 2025-05-07 |
Family
ID=78232334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21794114.5A Active EP4228871B1 (de) | 2020-10-15 | 2021-10-12 | Verfahren zum fertigen länglicher werkstücke sowie fertigungseinrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4228871B1 (de) |
| DE (1) | DE102020127141A1 (de) |
| WO (1) | WO2022078992A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ524672A (en) * | 2003-03-10 | 2006-04-28 | Wood Engineering Technology Lt | laminate from logs using thin boards of uniform thickness or cross-sectional area, to maximise use of material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1653018A1 (de) * | 1967-08-01 | 1971-09-02 | Hombak Maschinenfab Kg | Anlage zur Stirnholzverleimung mittels Keilzinken |
| DE2545274C3 (de) * | 1975-10-09 | 1980-02-14 | Sauter Maschinenbau Kg, 7519 Zaisenhausen | Anlage zur Herstellung von Keilzinken an Enden von Holzwerkstücken für die Holzlängsverleimung |
| EP0371978B1 (de) | 1987-07-24 | 1991-12-11 | Pfeifer, Oskar jun | Verfahren und einrichtung zur herstellung eines endlosen holzstranges |
| DE4000804A1 (de) * | 1990-01-12 | 1991-10-31 | Dimter Erwin | Energie- platz- und kostensparendes verfahren zur herstellung von endlosen hoelzern durch keilzinkung zu brettschichtholztraegern und anderen holzerzeugnissen, die ohne belastung der noch nicht ausgehaerteten keilzinkenfuge eine verleimung zu schichtholz ermoeglicht, sowie vorrichtungen dazu |
| DE102006002403A1 (de) * | 2006-01-18 | 2007-07-19 | Homag Holzbearbeitungssysteme Ag | System zum Herstellen von plattenförmigen Werkstücken |
| DE102009022335A1 (de) | 2009-05-13 | 2010-11-18 | GreCon Dimter Holzoptimierung Süd GmbH & Co. KG | Verfahren zur Herstellung von Holzplatten |
| DE102013109206A1 (de) * | 2013-08-26 | 2015-02-26 | Ladenburger Gmbh | Verfahren zur Herstellung eines aus mehreren Schnitthölzern bestehenden Konstruktionsschichtholzes sowie Konstruktionsschichtholz |
-
2020
- 2020-10-15 DE DE102020127141.7A patent/DE102020127141A1/de active Pending
-
2021
- 2021-10-12 EP EP21794114.5A patent/EP4228871B1/de active Active
- 2021-10-12 WO PCT/EP2021/078122 patent/WO2022078992A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ524672A (en) * | 2003-03-10 | 2006-04-28 | Wood Engineering Technology Lt | laminate from logs using thin boards of uniform thickness or cross-sectional area, to maximise use of material |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022078992A1 (de) | 2022-04-21 |
| EP4228871B1 (de) | 2025-05-07 |
| DE102020127141A1 (de) | 2022-04-21 |
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