EP0922547A2 - Apparatus for manufacturing window frame members - Google Patents

Abstract

The machine has a transverse support (3) positioned above at least one longitudinal guide (1,2) with machining units (4-6) inside an operating compartment (20,21). The machining units travel on top of, to the side of, and beside the guide which extends on both sides away from the transverse support with guide sections (9,10;11,12) of equal length matching the long side of the squared timbers (18) being machined. A carriage (14) holding a piece of timber each is mounted on the longitudinal guide. Each carriage is moved in the operating chamber until its first end is positioned and stationary for machining. The second end of the piece of timber is moved into the second guide section and machined while stationary. The carriage is then retracted into the first guide section and the long side of the piece of timber machined.

Description

The invention relates to a machine for processing of squared timbers for the production of window frame bars the specified in the preamble of claim 1 Art.

Such a machine is known from published patent application EP 0 455 962 A2 known. With this machine, too Such squared timbers on the workpiece carrier added that they are substantially transverse to their longitudinal direction to the individual processing units for the frontal processing are transported, the processing units Arranged one behind the other along the conveyor path are. To machine the second front end at the end of the conveying path on the workpiece carrier stretched square timbers loosened, turned through 180 ° and opened the workpiece carrier are readjusted before they are used for the further processing can be clamped again. After completion The processing on the front ends of the squared timbers Workpiece carrier removed and on a transport device placed the squared timbers on those processing units passes by for the longitudinal profiling are provided.

Because of the necessary reclamping processes, the production of Window frame spars on the well-known machine time consuming, in addition, each reclamping process requires a new adjustment of the relevant timber, what corresponding requirements to the operator. So far the production sequence likes appear cumbersome, after which the editing the squared timbers made on their ends is and only then the longitudinal profiling takes place. For reasons of strength, however, especially in the case of mortise and tenon joints or for corner connections of the frame bars another production sequence by means of tines on the front ends not be applied.

Therefore comes the way of working the tenoning and Slitting machine for processing sash and frame wood for windows, as in the German utility model 78 07 071 is not considered, because there it is assumed that editing both ends of the Squared timber is usually made after longitudinal profiling becomes. Known from the utility model mentioned Machine is about just the two ends of a square timber in one work step, i.e. at the same time, to be able to profile.

A program-controlled woodworking system for a long time Workpieces, such as beams, are from DE 43 01 217 A1 known. With this machine the wooden beams can in the run on the top and on the long sides to be edited. On the special issues at the Manufacture of spars for window frames to be considered are not discussed here.

The object of the invention is now a machine to create the generic type, in the one-off Arrangement of the relevant timber on the workpiece carrier both the front and the long side Machining or profiling carried out without reclamping can be.

This task is the generic of a machine Kind according to the invention by the characterizing features of claim 1 solved.

It is essential for the invention that what is to be processed in each case Squared timber in the once stretched on the sled The position remains, neither between the first machining process at the first face and the second machining process at the second end before changing in the third machining process for attaching the longitudinal profiling loosened, folded by hand and must be readjusted on the workpiece carrier. For all these machining operations remain the relative location between the squared timber to be processed and the slide as a workpiece carrier unchanged, although the first two Machining processes in stationary positioning of the relevant timber and the last processing operation be carried out in the run.

Advantageous design features of the invention result itself from the subclaims. It is particularly important to emphasize that for fixing the respective square timber on the slide different clamping and holding devices can be provided so that the machining tools for the individual processing operations by the respective Clamping devices are not hindered. Furthermore, the Machine throughput can be increased by at least one provides two parallel longitudinal guides on which one slide each is arranged as a workpiece carrier, whereby both sledges have different working cycles, in order to be able to convert one of the sleds just while the other carriage is on 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 is explained in more detail below with reference to the drawing using an exemplary embodiment. Show:

Fig. 1

the top view of a machine for processing square timbers for the production of window frame spars and

Fig. 2

the side view of the machine according to Figure 1.

In detail one recognizes an elongated in the drawing Machine bed with a first longitudinal guide 1 and one second longitudinal guide 2, which is essentially over the extend the entire length of the machine bed. over the transverse center of these two longitudinal guides 1 and 2 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 units for all those machining operations are required to cut from a square timber that is in the Technical terminology is also called a scantle, a frame spar to make a window frame with other such spars, like a casement or a frame, can be put together. For this it is necessary to the ends of such squared timber by exciting machining Tines, pins, corresponding grooves or drill holes to attach for a dowel connection 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 frame rail in question are coordinated. As for all of these machining operations different depending on the profile or the bore diameter Tools may be needed at the ends of the cross member 3 tool consoles 7 may be present have several tool positions, using the so-called pick-up method be approached by the processing units 5 can. Likewise, on one side of the cross member 3 a tool magazine 8 can be arranged, which for the Tool changes can be approached by processing units 4 and 6 is.

Working spaces 20 extend below the cross member 3 and 21, which are assigned to 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 do can have within work rooms 20 and 21 move these processing units 4 to 6 and, if necessary be delivered. These are not on the cross member 3 Specified tours available, on which supports are stored, which the individual processing units Wear 4, 5 and 6.

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

On both guides 1 and 2 is a carriage 14 as Workpiece carriers can be moved, and on each of these slides 14 a square timber 18 or a scantling can be clamped. According to this, 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 of different lengths Squares 18 can be adjusted by being made up of a plurality consists of interconnectable carriage 15, which is immediate with each other or via the relevant timber 18 can be coupled together. At least one of these Carriage 15 is provided with a drive for the carriage 14 to be able to move along the guide 1 or 2. The whole Machine is program controlled, for example with an NC control, and accordingly set the parallel longitudinal guides 1 and 2 one of the machine axis represents, in the direction of which the carriage 14 is program-controlled be moved. This will also be beneficial used to adjust the length of the carriage 14 accordingly to be able to vary the respective square timber length. So can the program control specifies which length of the carriage 14 is required, takes place accordingly mechanically providing or coupling one corresponding number of carriages 15, of which the not needed in a parking position at one end of the longitudinal guides 1 and 2 can be turned off.

For fixing the squared timbers 18 on the slide 14 tensioners 16 are provided, which the relevant timber 18 hold on the underside, for what suction clamps for example are suitable. The holding forces of these tensioners 16 can be too weak for certain machining operations be, which is why on the carriage 14 or the carriage 1 more Clamping devices are available. These are grippers 17, the present on the carriage 15 forming the carriage 14 are. The grippers 17 are pivotable such that they are in one Starting position to the side of the contact surface of the Carriages 15 are pivoted away above the tensioner 16 as is shown in the parked car 15 which is at the end of the guide sections 9 and 11 are located on the right of setup area 13. Apply in the clamping position the grippers 17 that placed on the carriage Squared timber 18 from the top thereof, for which purpose the grippers 17 necessarily encompass one long side of the square timber 18 have to.

At least on the cross member 3 and possibly on one the frame constructed of the machine bed are a further holding device Pinch rollers 19 each in a row above the longitudinal guide 1 and the longitudinal guide 2 arranged so that they are against the top of the on the carriage 14 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 to depress.

So especially for longitudinal machining Squares 18 on the support sides of the carriage 14 the take appropriate position, with particular reference to the lateral overhangs of the squared timbers 18 on the support sides the carriage 14 arrives are on the rear Side of the two longitudinal guides 1 and 2 on Set-up station 13 still arranged stop rulers 22 that extend parallel to the longitudinal guides 1 and 2 as well are adjustable across. The stop sides of these stop rulers are located above the edition pages of the Slide 14, which means that it is on the level of the support sides the sled 14 rest on squared timbers 18.

At set-up station 13, a squared timber 18 is first placed on the front Carriage 14 placed, for which purpose the stop ruler 22 serves as a positioning aid. After the tensioner 17 and if necessary the tensioner 16 has already taken action are to fix the squared timber 18 securely on the slide 14, is the square timber 18 with its front, first Front end in the work space 20 up to the processing units 4 and 6 moved up to the cross member 3, and all processing operations are carried out on the this first end of the square timber 18 required are. Thereafter, by moving the carriage 14 further Kantholz 18 with its rear, second front end in move the working space 20 so that the corresponding ones are also here Processing operations using the processing units 4 and 6 can be carried out, including 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 editing of the second front end of the respective square timber 18 is finished, with which the stationary processing of the foreheads of the squared timber, the sledge moves 14 entirely on the guide section remote from the set-up area 13 10. This happens as far as in the following Return of the carriage 14 to the set-up site 13 the respective Squared timber 18 in engagement with those processing units To bring 5 on the cross member 3, which carry out the longitudinal profiling of the squared timber 18, Here are the sides of the squared timber 18 Grippers 17 as tensioning means disturbing, they are therefore with their arms spanning across as far as possible, until these arms are parallel to the longitudinal guide 1 lie and no longer cover the squared timber 18 on the upper side. Here, the square timber 18 is opened by the tensioner 16 the carriage 14 held sufficiently. To get one afterwards sufficient fixation of the squared timber 18 on the slide 14 ensure the pressure rollers 19 now come into action. When the carriage 14 advances, they are raised so far that they can not collide with the grippers 17. In this respect, they will only become effective when the sled returns 14 lowered to such a contact force on the support side of the carriage 14 ensure that the through the longitudinal profiling by means of the processing units 5 occurring forces can be safely derived. This profiling takes place in a continuous process Movement of the carriage 14 towards the guide section 9, after which the carriage 14 again the Setup position 13 reached. Here begins after loosening the tensioner 16 and acceptance of the processed squared timber 18 by laying on the next, unprocessed squared timber 18 the next Working play for the slide 14 on the longitudinal guide 1.

This runs on the second, rear longitudinal guide 2 same work cycle with the same machining operations ab, only the sequence of the two statonary is here Machining operations in the work space 21 under the cross member 3 and the last machining process taking place in the run controlled such that the carriage 14 then located in the guide section 11 at the set-up station 13 when the Carriage 14 already on the first longitudinal guide 1 to the guide section 10 has moved there. After that, from Setup 13 from the carriage 14 of the second longitudinal guide 2 are operated, after which the work cycle is started here is that with the working game for the squared timber partially on the slide 14 of the first longitudinal guide 1 overlaps. To change over, the slides reach 14 the set-up station 13 and the guide sections 9 and 11, respectively one after the other in such a way that only ever one of the two sledges 14 is located at set-up station 13.

Other than shown in the drawing can on the Carriage 14 also two or more squares in a row be arranged, which varies depending on the length of the manufacturing frame spar, which is also relatively short can. One then arranges the correspondingly shorter squared timbers aligned one behind the other on the carriage 14, wherein such a distance is left between the squared timbers, so here for stationary processing in the workrooms 20 and 21 the tools do not collide with the to be machined end of the relevant, adjacent Squared timber can be processed. Basically can An initially longer squared timber was also arranged on the sledge which are used in stationary processing in the work rooms 20, 21 is first divided, whereby then the movability of the individual carriages 15 of the carriage 14 used to move the squared timber sections apart can be.

Claims (11)

Machine for processing squared timbers for the production of spars that can be joined together to form window frames with processing units for exciting profiling first of the two ends and then at least one long side of the respective square timber and with a workpiece carrier that transports the squares to the processing units for processing at the ends,
characterized, that above at least one longitudinal guide (1, 2) there is a cross member (3) with the processing units (4 - 6) which can be moved thereon within a working space (20, 21) above and laterally next to the longitudinal guide (1, 2) and the longitudinal guide (1, 2) with guide sections (9, 10; 11, 12) of substantially the same length, adapted to the greatest length of the squared timbers (18) to be machined, extend away from the cross member (3) on both sides, with the longitudinal guide (1, 2) a carriage (14) for receiving a square timber (18) with its longitudinal direction parallel to the longitudinal guide (1, 2) is mounted as workpiece carrier, and that the carriage (14), initially located in one of the guide sections (9, 11), with the square timber (18) clamped thereon, moves up to the positioning of its first end face (23) in the working space (20, 21) and processes this first end face in a stationary manner becomes, then the carriage (14) is moved into the second guide section (10, 12) until the second end face (24) of the squared timber (18) is positioned in the work space (20, 21) and this second end face (24) is machined in a stationary manner, and then the carriage (14) is moved back into the first guide section (9, 11) and the squared timber (18) is machined continuously along the length. Machine according to claim 1,
characterized, that there are two longitudinal guides (1, 2) over which the cross member (3) extends, below which there are two working spaces (20, 21), one for each of the longitudinal guides (1, 2), with the corresponding processing units ( 4 - 6). Machine according to claim 1 or 2,
characterized, that the cross member (3) is designed as one or the two longitudinal guides (1, 2) spanning portal. Machine according to claim 2 or 3,
characterized, that the two adjacent one guide sections (9, 11) of the two longitudinal guides (1, 2) to one side of the cross member (3) form a set-up station (13) and the two slides (14) have staggered working cycles. Machine according to one of claims 1 to 4,
characterized, that the at least one slide (14) has the respective square timber (18) on and / or near its underside clamping means (16) and on the cross member (3) and / or on the slide (14) further holding or clamping devices (17th , 19) are arranged, which act on the relevant timber (18) while leaving the machining points free during the respective machining operation. Machine according to claim 5,
characterized, that on the carriage (14) pivotable grippers (17) are arranged as further clamping devices which grip the squared timber (18) on the long sides and / or the top. Machine according to claim 5 or 6,
characterized, that a row of pressure rollers (19) acting on the top of the squared timber (18) on the cross member (3) is arranged as further holding devices. Machine according to claim 7,
characterized, that on the set-up station (13) on the at least one guide section (9, 11) there is arranged a stop ruler (22) which is parallel to it and which can be adjusted transversely thereto and which is above the support side of the slide (14) for the lateral contact of the respective squared timber (18) located on the slide (14) for the purpose of adjustment. Machine according to one of claims 1 to 8,
characterized, that the at least one carriage (14) is divided into two or more carriages (15) which can be coupled to one another in accordance with the respective square timber length, at least one of which is provided with a feed drive or can be coupled. Machine according to claim 9,
characterized, that the movement of the at least one slide (14) along the at least one longitudinal guide (1, 2) takes place in a program-controlled machine axis and the coupling or uncoupling of the carriages (15) to adapt the length of the slide (14) to the respective length of the square timber is done programmatically. Machine according to one of claims 1 to 10,
characterized, that two or more squared timbers (18) can be clamped on the carriage (14) one behind the other and at a distance from one another, the carriage (14) being controlled in such a way that each of these squared timbers (18) with the two ends in each case in the relevant working space (20, 21) is positioned for stationary processing.

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