Device for machining rod-shaped workpieces, such as window or door profilesTechnical Field
The invention relates to a device for machining rod-shaped workpieces, such as window or door profiles, which can be moved in a horizontal plane in the Z direction by means of a conveying device and which is provided with a machining device with a tool in the Y direction in a plane arranged substantially perpendicularly to the direction of movement of the workpiece, said machining device being spatially oriented in the vertical plane toward the workpiece.
Background
A large number of different processes are carried out in the processing of profiles for the manufacture of doors or windows. These profiles may consist of plastic, metal or wood. Combinations of different materials are also possible. When, for example, plastic hollow profiles for windows are to be produced, drainage channels must be milled obliquely into the folds and/or downwards and/or forwards. Furthermore, closure positioning holes are provided on the screen frame profile and/or on the lintel profile.
Furthermore, the lock housing must be milled out if necessary. Intermediate bolts for the blind guide bars and the weather slats must also be installed. Furthermore, corner hinge openings are provided in the door leaf support and tilt device. The diameter of the drainage and ventilation slots is larger here, while the closure element openings and the corner hinge openings mostly have a smaller diameter. In order to be able to perform different drilling and milling, different machining tools, for example, drills or milling cutters of different sizes, are required.
In automated machining, there is no possibility, for example, of changing the drill insert in the case of a single drill bit, since the changing of the drill insert is too costly. It is simpler to preset the drill bit with different inserts or different drilling and milling tools, respectively. In order to cope with this processing effort and to provide an automated processing as far as possible, DE 19725043 a1 discloses a device for processing structural elements. The known device is equipped with a machining device which extends in a plane arranged substantially perpendicularly to the direction of movement of the component and whose machining tool is spatially oriented with respect to the workpiece. The machining tool is located on the support element, so that the machining tool arranged on the support element reaches the workpiece arranged in the transport direction during machining by a corresponding displacement of the yoke-shaped support element.
A full ring is also known as a machining element, on which the tools are then arranged in a corresponding manner on a circular ring circumference. By moving the workpiece to be machined through the ring, the tool is correspondingly rotated on the ring, so that the corresponding tool is machined on the profile.
It is considered disadvantageous in the known embodiments that a machining tool provided on the support element, which tool is involved in flexible machining, is still of significantly improved value in terms of the machining speed on the workpiece. It is also disadvantageous that, in particular, the respective length of the device must be maintained by the individual processing stations, such as pendulum saws or drilling/milling machines, in order to arrange the respective processing unit on the device in this manner. This has the disadvantage, in particular, that the processing line is then laid in a long configuration for switching the respective processing tools one after the other.
Disclosure of Invention
The invention is therefore based on the problem of developing a device for machining rod-shaped workpieces which, on the one hand, ensures a high process safety in terms of the machining of the workpieces while providing a perfect surface treatment, wherein, in particular, the machining time of the workpieces should also be significantly reduced. Furthermore, the processing access of the processing tool to the workpieces on the conveyor is kept significantly more flexible, wherein it should also be taken into account that the device for processing rod-shaped workpieces should be constructed significantly shorter.
This problem is solved according to the invention by the features of the independent claims, advantageous embodiments and developments of the invention being derived from the dependent claims.
The advantage achieved by the invention is that the insertion of the machining tool in a plane perpendicular to the transported workpiece is kept significantly more flexible by the device for machining according to the invention, since the machining tool is arranged on an open circular arc, which is designed as an open ring. As a result of this configuration, it is now possible to provide an approximately annular processing station by means of the so-called open circular arc, which can be moved by virtue of the movability of the open circular arc in such a way that the tools present on the circular arc reach all regions around the rod-shaped profile. If the open circular arc enters into one position, there is the possibility that other tools which are relevant for the profile machining can enter into the open region of the circular arc, so that for example a pendulum saw, a mitre saw or a multi-spindle saw can enter, which saws the profile to a short length. It is also possible to machine the end regions of the profile sections after sawing. This makes it possible to perform, in addition to the so-called circumferential machining around the profile, also end-side cutting and machining at the local station. The advantage is now obtained that the device or the processing line for rod-shaped profiles can be kept significantly shorter, so that such a device is constructed significantly more compactly. This is also achieved by a compact design, as a result of which costs can be saved in such a device.
In addition to the lateral approach to the open flat ring, i.e., toward the workpiece in the X direction, the solution according to the invention makes it possible to obtain the advantage of annular machining on the workpiece, wherein the machining tool is thereby also provided with access to all sides in one plane. Since free space is provided for other machining tools due to the open sections, these machining tools have access to the workpiece in the plane of the flat ring.
The high flexibility and the reduction in machining time are achieved essentially in that the machining device comprises an open circular arc arranged in a plane perpendicular to the workpiece, which circular arc is mounted as an open ring so as to rotate about the workpiece, wherein the open section of the ring is dimensioned such that a tool opposite the machining device in the vertical plane can be moved into the region of the open section of the ring in order to facilitate machining of the workpiece. As a result, almost all machining processes can now be carried out in one plane in a plane perpendicular to the workpiece.
According to a particularly preferred embodiment of the invention, the open ring is arranged as a flat ring on a gantry which can be moved in the X direction relative to the gantry. The open ring can be moved vertically in the Y direction on a gantry column. In an expanded configuration, a holding device for an open flat ring is arranged on the gantry column, on which holding device the open ring is rotatably supported with its rear side. The open ring is thus held on the gantry column in such a way that it is displaceable in height in the Y direction and in the X plane, in order to provide flexibility of the open ring in this way with respect to the workpiece to be machined. It is now possible to rotate the ring almost around the workpiece to be machined by means of the open ring, so that the tools present on the ring correspondingly gain access to the workpiece.
According to a particularly advantageous embodiment, the open flat ring is arranged on a guide for the rotary mounting on the holding device, which is held on the gantry column in a displaceable manner by means of the guide and which has a projecting arm region which projects beyond the gantry column. The open flat ring is guided on the holding device in such a way that the flat ring can be rotated relative to the gantry column. In the expanded configuration, the ring, which is open here, interacts for the rotational mounting with a drive device arranged on the holding device, which is fastened to the movable holding device. In this case, according to one possible embodiment of the drive, the open ring has a tensioned belt on its circumference, which belt interacts with a drive wheel of the drive, which drive wheel is arranged on the motor shaft. However, other drives are also conceivable, such as a gear, a worm drive, a linear motor or the like rotating around the ring. In order to ensure a secure and flexible rotational mounting of the open ring on the retaining device and in the guide device, in particular, diverting rollers are arranged on the retaining device in front of and behind the drive wheel, respectively, which divert the belt over the circumference of the ring and press it onto the circumference of the ring.
According to a particularly advantageous embodiment of the invention, at least one movable slide is arranged on the front side of the open ring, on which slide a motor and a machining tool are arranged. Means for positive engagement with the motor are provided on the circumference of the open ring. This ensures and provides that, in the front region of the open flat ring, the machining tool can be moved over the circumference or the circular arc region of the ring. In the expanded configuration, it is also provided that at least one tool, which is firmly attached to the ring and is oriented radially with respect to the workpiece, is arranged on the open ring at one of the free ends of the ring. Due to the rotary mounting of the open ring, the tool can travel to each point on the workpiece, since in particular a 360 ° coverage is given here.
As already mentioned above, in the plane of the open flat ring, a further machining tool is arranged opposite a portal column that is movable in the X direction on the machine frame. The machining tool can also be moved in the Y direction on a second portal column. This allows the machining tool to enter the region that is accessible by the open ring when the open ring is correspondingly rotated so that the open section points toward the opposing second portal column. Such a machining tool includes a saw, a milling cutter or a drill, by means of which the workpiece can be cut accordinglyOr processing of the end portion of the end side.
Drawings
An embodiment of the invention is shown purely schematically in the drawings and is described in detail below. Wherein:
fig. 1 shows a perspective view of an apparatus according to the invention for machining rod-shaped workpieces;
fig. 2 shows a front view of the device according to fig. 1;
figure 3 shows another front view of the tool on the apparatus according to figure 1 in another position,
figure 4 shows a further front view of the tool of the device in a further position in a further view according to figure 1,
FIG. 5 shows a perspective view of an open ring on a gantry column, an
Fig. 6 shows a perspective detail view of a possible drive for an open ring and a carriage drive for a machining tool.
Detailed Description
Fig. 1, 2 and 3 and fig. 4 each show, in a single view, a device 1 according to the invention for machining rod-shaped workpieces 2, for example window or door profiles, which can be moved in the Z direction in a horizontal plane by means of a conveying device, not shown in detail. In a plane, in this case the Y-plane, which is arranged substantially perpendicularly to the direction of movement of the workpiece 2, machining devices 3.1 and 3.2 with a tool 4 are provided, which are spatially oriented in the vertical plane relative to the workpiece 2. As can be seen in particular from fig. 1, 2, 3 and 4, the machining device 3.1 consists of an open circular arc, which is arranged in a plane perpendicular to the workpiece 2 and is mounted as an open flat ring 5 so as to be rotatable about the workpiece 2 on the Z-axis, wherein the rotatable mounting is intended to be indicated by a schematic arrow.
The open flat ring 5 is dimensioned by the open section 6 in such a way that a tool 7 of the machining device 3.2, which tool is located opposite the machining device 3.1 in the vertical plane, can enter the region of the open section 6 of the flat ring 5 in order to machine the workpiece 2, as is shown in detail in fig. 2 in particular, but also in fig. 4. As is apparent in particular from fig. 1, but also from fig. 5, the open flat ring 5 is arranged on a gantry column 8 which can be moved in the X direction relative to the machine frame 9. The open flat ring 5 can be moved vertically in the Y direction on a gantry column 8, so that it can be moved up and onto the workpiece 2 to be machined. As can be seen from the overview of fig. 1 to 4, but also from the detail views of fig. 4 and 6, a holding device 10 for the open flat ring 5 is arranged on the gantry column 8. The open flat ring 5 is rotatably mounted on the holding device 10 by its circumference 11. The holding device 10 is mounted on the gantry column 8 so as to be movable on a region 12 by means of a guide. An arm-like region 13 is attached to the region 12 of the holding device 10, on which region a guide for the rotary mounting of the open flat ring 5 is arranged, as is shown in particular in fig. 5. In particular, the holding device 10 can thus be moved on the gantry column 8 in the X and Y axes, wherein in particular the rear side of the open flat ring 5 is supported on the holding device 10 in such a way that the open flat ring can be rotated on the holding device 10 in each case.
The open flat ring 5 interacts for the rotational mounting with a drive 14 arranged on the holding device 10, as can be seen in detail in particular in fig. 5 and 6. For this purpose, the open flat ring 5 has on its circumference 11 a tensioned belt 15 which interacts with a drive wheel 17 arranged on a motor shaft 16, as can be seen clearly in fig. 6. The drive wheel 17 is coupled here via a transmission 18 to a motor 19. As can be further seen from fig. 6, in the holding device 10, in front of and behind the drive wheel 17, there are arranged deflection rollers 20 and 21, respectively, which guide the belt 15 over the circumference 11 of the flat ring 5. It is thus evident that the belt 15 is accordingly received by the circumferential ring 11 during rotation of the drive wheel 17, wherein the belt, after passing over the drive wheel 17, is laid back on the circumferential ring 11 again by the following deflecting rollers 20, 21 and is pressed or pressed against the circumferential ring 11. Due to the drive 14, a rotatability of the open flat ring 5 in the guide on the holding device 10 is obtained. The described drive device only records one possible embodiment. As drive means, gear drives, linear motors or the like for the rotary mounting of the flat ring 5 can also be used.
As can be seen in particular from fig. 5 and 6, at least one movable carriage 22 with a motor 24 on the front side is arranged on the open flat ring 5. On the slide 22, machining tools 4 are arranged, which are oriented radially toward the workpiece 2. Here, means 23, for example belts, for form-locking with a motor 24 are provided on the circumference 11 of the open flat ring 5. It goes without saying that the displaceability of the carriage 22 according to the described embodiment can also be provided in order to correspondingly pivot the open flat ring 5 on the carriage 22, wherein in this case correspondingly also the deflecting rollers 25 and 26, as well as the drive wheel 27 and the motor 28 can be provided, so that the carriage 22 can be displaced on the open flat ring 5 in the front region on the circumference 11. This results in a tool 4 which is movable in particular over the arc of the open flat ring 5.
According to a special configuration, at least one tool 4, which is firmly attached to the flat ring 5 and is oriented radially toward the workpiece 2, is arranged on the open flat ring 5 at one of the free ends 29, 30 of the flat ring 5, as can be seen in fig. 5, but also in fig. 3, 4 and 1 and 2. The firm arrangement of the tool 4 allows the tool 4, which is firmly arranged here due to the open circle, to reach any position on the workpiece 2 to be machined in combination with the movable tool 4 on the slide.
As is evident from the overview of fig. 1, 2, 3 and 4, in the plane of the open flat ring 5, a machining tool 7 is arranged opposite a portal 31 that can be moved in the X direction on the machine frame 9. The machining tool 7 on the gantry column 31 is also movable in the Y direction, so that it can be moved relative to the workpiece 2 to be machined in such a way that it can act both above and below. As can be seen in particular in this exemplary embodiment, the machining tool 7 is a saw, by means of which a slicing of the rod-shaped workpiece 2 can be carried out, as is evident in particular from fig. 4. Not shown are, for example, milling or drilling tools, which can accordingly machine the end faces of the cut-out profiles from opposite positions.
List of reference numerals
1 apparatus
2 workpiece
3 processing devices 3.1, 3.2
43.1 cutting tool
5 Flat ring
6 open section
73.2 on
8-ring gantry column
9 frame
10 holding device
11 circumference of ring
12 guide area plate
13 arm area plate
14 drive device
15 belt
16 motor shaft
17 driving wheel
18 driving device
19 Motor
20 steering roller
21 steering wheel
22 sliding seat
23 mechanism
24 motor slide
25 steering roller
26 steering roller
27 driving wheel
28 Motor
29 free end
30 free end portion
31 gantry column