EP0922547B1 - Apparatus for manufacturing window frame members - Google Patents

Description

The document EP 0 445 962 A2 discloses a machine for Editing squared lumber for the production of window frame beams known. In this machine will be the squared lumber, also called Kantel, on the workpiece carrier taken so that they are substantially transversely to their longitudinal direction to the individual processing units for frontal machining be, with the processing units along the Conveyor are arranged one behind the other. For processing of the second front end must be at the end of the conveying path the squared timber clamped on the workpiece carrier solved, turned 180 ° and on the workpiece carrier be readjusted before moving on for the rest Machining be tightened again. After completion of the Processing at the ends are the squared timbers of Workpiece carrier removed and on a transport device which the squared timbers attached to those Processing units passes, which for the longitudinal side Profiling are provided.

Because of the necessary Umspannvorgänge is the production the window frame spars on the known machine time consuming, also requires each transformer operation one new adjustment of the relevant squared timber, what appropriate Demands on the operator. In that regard, the production sequence may seem cumbersome, After that, the processing of the squared timbers begins whose front ends is made and then only the Longitudinal profiling takes place. For reasons of strength However, especially with pin-groove connections or at corner joints of the frame spars by means of tines not used at the front ends another manufacturing sequence become.

Therefore, the operation of the tenoning and Slotting machine for processing sash and frame timbers for windows, as in the utility model DE 78 07 071 U1 is not considered, because there it is assumed that the two-ended Editing the squared timber normally after the Longitudinal profiling is made. When from the mentioned Utility known machine is about only the two ends of a square timber in one Operation, ie at the same time to be able to profile.

A program-controlled woodworking machine for a long time Workpieces, such as beams, is from the published patent application DE 43 01 217 A1. With this machine Both the wooden beams can pass through the top and to be worked on the long sides. On the special Concerns in the manufacture of Holmen for window frames to be considered, will not be here received.

The document EP 0 267 156 A2 likewise discloses a machine known for editing wooden beams on Carriages are added. The Aufspannwagen are on a tour along a processing station movable, this processing station is a processing unit with interchangeable machining tools having. This can be about Circular saw blades, drills or cutters act, and ever after the processing to be performed, the tool holder be moved in the direction of several axes. The special processing of square timbers for production Window frame bars is not mentioned in the document.

From the document US 5,468,101 A continues a woodworking machine with so-called change space allocation for which two under a portal durchfahrbare Workpiece tables are provided. The basic idea Such a machine is on both sides of the portal movable tools for processing those To use workpieces on both the one and the other also clamped on the other of the two workpiece tables are. The processing of longwood is in the Document not mentioned.

Furthermore, from the document DE 33 03 162 A1 a End profiling known, in which the processed Workpieces only in a single transport direction be advanced. Because it is here as Disadvantage regarded, for the processing oblong To provide workpieces so-called sliding tables, the back and forth. For the special processing measures, the to squared timbers for the manufacture of too Window frame joinable spars required are, such a machine is less suitable.

The invention is based on the object, a method for operating a machine for processing squared timbers for the production of window frames that can be joined together Holmen to create, after unique Arrangement of the relevant squared timber on a workpiece carrier both the forehead-end and the longitudinal-side Machining or profiling without re-clamping can be made.

This object is achieved with the features of the claim 1 solved.

For the invention is essential that each to Editing squared timber in the once on the sled clamped situation remains, so neither between the first machining operation at the first end face and the second processing operation on the second end still before transferring to the third processing operation solved for attaching the longitudinal profiling, Tilted by hand and adjusted on the workpiece carrier must become. For all these editing operations the relative position remains between the one to be processed Square timber and the carriage as a workpiece carrier unchanged, though the first two editing operations in stationary positioning of the relevant Square timber and the last machining process in the pass be made.

Advantageous design features of the invention result from the dependent claims. Here is special hervorzu-, Lift that up for the fixation of the respective square timber the carriage different clamping and holding devices can be provided so that the editing tools for the individual processing operations by the respective Clamping means are not hindered. Furthermore, the Machine throughput can be increased by that at least provides two parallel longitudinal guides, on which each carriage is arranged as a workpiece carrier, where both carriages have different work cycles, to be able to convert the one sled just then while the other carriage is in the processing path.

Fig. 1

die Draufsicht auf eine Maschine zur Bearbeitung von Kanthölzern für die Fertigung von Fensterrahmen-Holmen und

Fig. 2

die Seitansicht der Maschine gemäß Figur 1.

The invention will be explained in more detail with reference to the drawing of an embodiment. Showing:

Fig. 1

the top view of a machine for processing squared timbers for the production of window frames Holmen and

Fig. 2

the side view of the machine according to Figure 1.

In detail one recognizes an elongated one in the drawing Machine bed with a first longitudinal guide 1 and a second longitudinal guide 2, which extends substantially over the extend the entire length of the machine bed away. about the transverse center of these two longitudinal guides 1 and 2 away extends a cross member 3 in the form of a portal, on which a number of processing units 4, 5 and 6 is arranged. These are milling, sawing and / or drilling aggregates suitable for all those machining operations needed to be made of a squared lumber that is in the Technical language is also referred to as Kantel, a frame spar to do with other such spars to a window frame, like a sash or frame, can be joined together. For this it is necessary to the ends of such a squared timber by exciting editing Tines, tenons, corresponding grooves or boreholes for a dowel joint, while on the long sides the squared timbers attached longitudinal profiles need to be, especially on the joint side or on the glass holding side of the respective frame spar are coordinated. Because for all these editing processes ever different according to the profiling or the bore diameter Tools needed can be on the ends of the cross member 3 tool consoles 7 be present, the have several tool places, in the so-called pick-up procedure be approached by the processing units 5 can. Likewise, on one side of the cross member. 3 a tool magazine 8 may be arranged, which for the Tool change from the processing units 4 and 6 approachable is.

Below the cross member 3, work spaces 20 extend and 21, which are associated with the longitudinal guides 1 and 2 and essentially above these longitudinal guides 1 and 2 and extend laterally around them. Depending on the tasks, which the processing units 4, 5 and 6 to do can, within the work spaces 20 and 21 these processing units 4 to 6 proceed and if necessary be delivered. These are not on the cross member 3 more detailed guides available, where support are stored, which are the individual processing units 4, 5 and 6 wear.

The about the same length on both sides of the cross member 3 Longitudinal guides 1 and 2 extend at one, in the Representation of the right side of the cross member 3 via a Setup station 13 away. The longitudinal guide 1 thus has the Set-up seen from a first, in front of the cross member. 3 lying guide section 9 and a second behind the cross member 3 lying guide portion 10. In the same Way is found at the rear of the setup 1 from Longitudinal guide 2 a lying in front of the cross member 3 Guide section 11 and behind the cross member 3 befindlicher Guide section 12.

On both guides 1 and 2 is ever a slide 14 as Workpiece carrier movable, and on each of these slides 14 can ever be spanned a square timber 18 or Kantel. After that, the squared timber 18 lies with its longitudinal direction parallel to the longitudinal extent of the longitudinal guides 1 and 2, and the carriage 14 can be attached to different lengths of the Squared timbers 18 adapted by a plurality consists of interconnectable car 15, the immediate with each other or on the relevant squared timber 18 be coupled with each other. At least one of these Carriage 15 is provided with a drive to the carriage 14 to be able to proceed along the guide 1 or 2. The whole Machine is programmatically, for example with provided an NC control, and accordingly provide the mutually parallel longitudinal guides 1 and 2 one of the machine axis in which direction the carriages 14 are program-controlled to be moved. This will be beneficial too used to the length of the carriage 14 accordingly vary the respective timber length. So can be specified by the program control, which length of the carriage 14 is required in each case, takes place accordingly By machine, the provision or the coupling of a corresponding number of carriages 15, of which the unnecessary in a parking position at one end of the longitudinal guides 1 and 2 are turned off.

For fixing the squared timbers 18 on the carriage 14 Spanner 16 are provided which the respective squared timber 18 hold on the bottom, for which Saugspanner example are suitable. The holding forces of this tensioner 16 may be too weak for certain machining operations be, why on the carriage 14 and the car 1 more Clamping devices are available. These are grippers 17, on the carriages 14 forming carriage 15 available are. The grippers 17 are pivotable so that they are in one Initial position to the side of the bearing surface of Carriage 15 are pivoted away above the tensioner 16, as it reproduced in the car in the parking position 15 is, which is at the end of the guide sections 9 and 11 to the right of the preparation station 13. Apply in the clamping position the gripper 17 launched on the carriage Square timber 18 from the top thereof, to which the gripper 17th necessarily encompass the one longitudinal side of the squared timber 18 have to.

At least on the cross member 3 and optionally on one the machine bed constructed frame are as a further holding device Pinch rollers 19 each in a row above the longitudinal guide 1 and the longitudinal guide 2 are arranged so that they are against the top of the carriage 14 located on the Kantholzes 18 can be approached at certain machining operations the squared timber 18 in support the tensioner 16 on the support side of the carriage 14 depress.

Thus, in particular for the longitudinal processing the Squared timbers 18 on the bearing sides of the sledges 14 die take appropriate position, in particular on the lateral projections of the squared timbers 18 over the bearing sides the carriage 14 arrives away are at the rear Side of the two longitudinal guides 1 and 2 am Rüstplatz 13 still stop rulers 22 arranged, which is extend parallel to the longitudinal guides 1 and 2 and are adjustable transversely to it. The stop sides of this stop ruler are located above the edition pages of the Slide 14, bringing it up to the level of the bearing sides the carriage 14 resting squared timbers 18 are located.

At the set-up station 13 is first a square timber 18 on the front Carriage 14 launched, including the stop ruler 22nd serves as a positioning aid. After the tensioner 17 and optionally now already the tensioner 16 in action are to secure the squared timber 18 securely on the carriage 14, is the squared timber 18 with its front, first Front end into the working space 20 into the processing units 4 and 6 moved up to the cross member 3, and All editing operations are performed this first front end of the squared timber 18 is required are. Thereafter, by advancing the carriage 14, the Squared timber 18 with its rear, second front end in the working space 20 process, so that here the corresponding Machining operations by means of processing units 4 and 6 can be performed, with a cut to length can be considered. This is the sled 14 from the first guide section 9 to the second guide section 10 have been moved. Once the editing of the second front end of the respective squared timber 18 is finished, bringing the stationary processing of the front ends of the timber is completed, the sled moves 14 completely on the remote from the setup station 13 guide section 10. This happens so far, in the following Return of the carriage 14 to the setup station 13 towards the respective Square timber 18 in engagement with those processing units 5 to bring the cross member 3, which make the longitudinal profiling of the squared timber 18, Here are the squared timber 18 laterally encompassing Gripper 17 disturbing as clamping means, they are therefore with swung away to the side of her transversal arms, until these arms are parallel with the longitudinal guide. 1 lie and no longer cover the squared timber 18 on the top side. Here, the squared timber 18 through the tensioner 16 the carriage 14 held sufficiently. After that one adequate fixation of the squared timber 18 on the carriage 14, now the pressure rollers 19 come into action. When advancing the carriage 14 they are raised so far, that they can not collide with the grippers 17. In that regard, they are now only on the return of the carriage 14 lowered to such a contact pressure on the support side of the carriage 14 to ensure that by the longitudinal profiling by means of processing units 5 occurring forces are safely derived. This profiling takes place in a continuous process Method of the carriage 14 in the direction of the guide section 9, after which the carriage 14 again the Setup station 13 reached. Here begins after loosening the tensioner 16 and acceptance of the processed squared timber 18 by hanging up the next, unprocessed squared timber 18 the next Working clearance for the carriage 14 on the longitudinal guide 1.

On the second, rear longitudinal guide 2 runs same working game with the same machining operations only here is the consequence of the two statinaries Machining operations in the working space 21 under the cross member 3 and the last in-process processing controlled so that the carriage 14 then in the guide section 11 at the set-up station 13, when the Carriage 14 on the first longitudinal guide 1 already to the guide section 10 is gone. After that, from the Setup station 13 from the carriage 14 of the second longitudinal guide 2 are operated, then started here with the working game will, which deals with the work cycle for the squared timber on the carriage 14 of the first longitudinal guide 1 partially overlaps. To convert the carriages reach 14th the set-up station 13 and the guide sections 9 and 11, respectively chronologically one after the other so that only ever one of the two carriages 14 is located at the set-up station 13.

Other than shown in the drawing can on the Carriage 14 also two or more squared timbers in a row be arranged, which varies depending on the length of the finishing frame spar, which is also relatively short can. Then arrange the corresponding shorter squared timbers aligned in succession on the carriage 14, wherein such a distance is left between the square timbers, so here at the stationary processing in the workrooms 20 and 21 the tools collision-free with the not to be machined front end of the relevant, adjacent Kantholzes can be processed. Basically also a first longer squared timber on the Schitten arranged which is used in stationary processing in the work spaces 20, 21 is first divided, wherein then the mobility of the individual carriages 15 of the carriage 14 used to move apart the timber sections can be.

Claims (7)

1. Method for operating a machine for finishing dressed timber for making beams which can be assembled into window frames, in which a transverse support (3) is mounted above two longitudinal guides (1, 2) and underneath the transverse support there are two work spaces (20, 21), one for each of the two longitudinal guides (1, 2) and inside these work spaces (20, 21) both above and at the side next to the longitudinal guides (1, 2) are mounted movable stock-removing machining assemblies (4 - 6),
   wherein furthermore the longitudinal guides (1, 2) extend each side away from the transverse support (3) by substantially equal length guide sections (9, 10; 11, 12) adapted to the greatest length of the dressed timbers (18) which are to be machined, and on each longitudinal guide (1, 2) as a workpiece support there is mounted a slide carriage (14) each for receiving one dressed timber (18) with its longitudinal direction parallel to the longitudinal guides (1, 2) whereby the slide carriage transports the dressed timber which is to be machined to the machining assemblies,
   and wherein furthermore two of the adjoining guide sections (9, 11) of the two longitudinal guides (1, 2) form a setting-up station (13) on one side of the transverse support (3),
   in which first the relevant slide carriage (14) located in the first guide section (9, 11) is moved with the respective dressed timber (18) clamped thereon for positioning its first end side (23) in the respective work space (20, 21) and this first end side is then machined stationary, then this slide carriage (14) is moved up for positioning the second side edge (24) of the dressed timber (18) in this respective work space (20, 21) into the second guide section (10, 12) and this second end side (24) is machined stationary after which the slide carriage (14) is moved back into the first guide section (9, 11) and the dressed timber (18) is machined along the long side as it passes,
   and in which furthermore the two slide carriages (14) have time-staggered work cycles.
2. Method according to claim 1,
   characterised in that,
   each slide carriage (14) of the machine is provided with clamping means (16) with which the relevant dressed timber (18) is held at or close to the underneath thereof, and that on the transverse support (3) and/or on the slide carriage (14) of the machine there are further holding or clamping devices (17, 19) which engage on the relevant dressed timber (18) whilst leaving the machining places free during the relevant machining processes.
3. Method according to claim 2,
   characterised in that,
   on each slide carriage (14) of the machine are mounted swivel grippers (17) forming further clamping devices with which the dressed timber (18) is gripped along the longitudinal and/or top sides.
4. Method according to claim 2 or 3,
   characterised in that,
   a row of pressure rollers (19) are mounted as further holding devices on the transverse support (3) of the machine to bear upon the top side of the dressed timber (18).
5. Method according to claim 4,
   characterised in that,
   at the setting-up station (13) of the machine there is a stop ruler (22) at the side on at least one guide section (9,11) parallel to and displaceable across same, the stop ruler being located above the contact bearing side of the slide carriage (14) and placed against the relevant dressed timber (18) for the purpose of adjusting same on the slide carriage (14).
6. Method according to one of claims 1 to 5,
   characterised in that,
   each slide carriage (14) of the machine is divided up into two or more carriages (15) which can be coupled together corresponding to the relevant length of the dressed timber and of which at least one is provided with or can be coupled to a feed drive whereby the movement of the slide carriage (14) takes place along the longitudinal guides (1, 2) in a program-controlled machine axis, and the coupling and decoupling of the carriages (15) is carried out program-controlled to adapt the length of the slide carriage (14) to the relevant length of the dressed timber.
7. Method according to one of claims 1 to 6,
   characterised in that,
   two or more dressed timbers (18) are clamped on each slide carriage (14) in succession and spaced from each other whereby the slide carriage (14) is controlled so that each of these timbers (18) is positioned with the relevant two end sides in the relevant work space (20, 21) for stationary machining.

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