DE7804369U1 - CLAMPING DEVICE FOR MACHINES FOR MACHINING WINDOW FRAMES - Google Patents

Description

Patent attorney

ι.-ing. HELMUT PFISTER

D-894 MEMMINGEN / BAYERN

BuxacherstroBe 9 phone (08331) 3183

Poslsdiedckonlc Munich No. 1343 39-805 Bank account: Bayerische Vereinibonk Memminaen 21/3

Firr.ä Urbar: Grr.bH. '(< Co. Elek' rotechnik KG, Dornierstra. V 5, 89-40 Memninfcen

iir.spanr.vcrrichtur.g for machines for processing before. Window frames.

"__ An invention relates to a clamping device for machines for processing especially the corner connections of window frames Gi. Like. Made of plastic profiles.

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for the fee roc »dn« ng of the · German patent lawyers.

tin window frame, which is constructed from plastic profiles is, there is 2.B. from four profile parts, the ends of which on tJehrunr: cut sin ·: and the one below the other to one rectangular frame are connected. The connection point between the profile parts must be after the welding process |) be worked on. In particular, the snow caterpillar must be eliminated and other processing may have to be carried out in the area of the corner connections Will.

Such work is necessary with window frames, namely »with swivel sashes as well as with the window frame is firmly arranged in the building. The same processes result in »I also use door frames or similar ones made of plastic |> frame built on profiles.

Window frames or the like usually have not inconsiderable dimensions and it is difficult to get the window frames lerar: to be clamped exactly in the corresponding machines, # a.i the subsequent machining process the desired • results in accuracy. An operator who controls the window frame pushes into the machine, holds and supports the window frame usually on the one removed from the machine End and therefore cannot adequately monitor the insertion process. The operator is directly on the machine, the handling of the window frame is much more difficult.

It is an object of the invention to provide a clamping device for such machines with which it is possible to precise clamping with a single operator

to achieve, in particular, the workflow to accelerate.

The invention is based on a clamping device of the type described above and proposes that in the Slide-in track of the window frame switches are provided which, when actuated, act on the window frame Trigger slide-in device that presses the window frame against angled stops and that Precision switches are arranged in the area of the stops, which when the window frame is in contact with the stops trigger or release the processing devices of the machine.

In the device according to the invention, the operator pushes insert the window frame into the machine with the frame supported and guided at the distal end can. If the frame is pushed in sufficiently far, the window frame operates a switch with its front parts, which trigger a special slide-in device. This insertion device grips the window frame and pulls it into the machine and presses it against angled stops, which ensures that the The corner connection to be machined reaches a precisely defined position in the machine, which is a prerequisite for an exact Editing is. If this position is reached, precision switches are triggered, which then the processing devices trigger or enable the machine. Further processing can either be done fully automatically or by the then possible manual control or manual operation.

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It has been found that with such a jig it is possible to always get an exact clamping position of the window frame. Pollution, Chips or the like, which are located in the area of the stops and which make an exact position of the window frame impossible would make, do not allow actuation of the precision switch, so that incorrect machining is excluded.

It is beneficial if one of the switches in the slide-in track is one of the profile parts and another switch is assigned to the other profile part of the window frame. The circuit can be arranged in such a way that already actuation of a switch triggers the insertion process. But it is also possible to use the two switches, for example to switch one after the other, so that the insertion process is only triggered when the insertion position is already sufficiently precise will.

In particular, there is a precision switch at each stop arranged, whereby it is recommended to make the arrangement in such a way that only when both precision switches are actuated the processing device on the machine is triggered or released.

The insertion device that pulls the frame into the machine preferably engages in the area of the connection point between the two profile parts on the window frame. It can be provided here simple driving pins, for example have a plastic coating to prevent damage to the window frame. But it can also insert devices are provided, which are adapted to the profile shape.

The insertion ^- organg is made much easier when the insertion device performs a Kubbewegung before the attack on the window frame. As a result, the slide-in path is completely or largely free of the slide-in device, so that the insertion of the window frame by hand can proceed unhindered.

The lifting movement can advantageously be derived from the slide-in drive, which creates a special drive for the Kub movement is unnecessary. It is favorable here if one Cam track is provided, which corresponds to the insertion device raises.

The arrangement can also be made in such a way that the insertion device is already used as a tensioning device for the window frame during processing. It is better, however, if special clamping means are provided which act essentially at right angles to the insertion device on the profile parts and which are controlled by the precision switches. As is known per se, these clamping means tension the frame against an abutment.

Ir. The drawing is an embodiment of the invention shown schematically. It shows .:

Fig.i is a plan view of an inventive

E in 3 par ι η device,

Fig. 2 is a partial side view of the illustration

^{(Jpr r} &quot; jf. 1 and

Fi =; - 3 a section through the representation of the

Fig.l according to the section line III - III on a different scale.

From the window frame 1 by the invention Clamping device is to be clamped, is in the representation of Pig.l the profile part 9 and the profile part shown. These two profile parts are connected to one another at the connection point marked 11. At the A weld bead was created by the welding process, which is not shown in detail and which after the window frame has been fully clamped, it is intended to be removed, in particular. The devices for Processing is not shown in detail in the drawing. These can be milling devices, movable ones Knife or grinding equipment. Other devices serving the similar purpose can also be used.

It is clear that a correctly clamped window frame can, if necessary, also be processed in other ways, For example, with regard to the arrangement of fittings or the like.

In Figure 1 that position is shown in which the ^ window frame 1 is inserted by hand. At the Einjbvorgar.g the 1st window frame is moved in the direction of the arrow 16. The window frame rests on the table 17 and the operator guides, for example, the window frame at the diagonally opposite, not shown, lower corner connection. During the insertion process, the profile parts · - ί μ: id 10 come into contact with the switches 2 and 3, which in the exemplary embodiment shown in the drawing are arranged to a certain extent in front of the stops 5 and 6 or their contact element protrudes sufficiently. But it is also possible to arrange switches 2 and 3 so that one or the other switch is only actuated when

one or the other profile part 9 or 10 rests against the associated stop 5 or 6. In this case, the Insertion device then the correct system at the other stop.

In the position shown in the drawing, it is assumed that the switches 2 and 3 are already actuated, so that the insertion device 4 on the inside of the profile parts 9 and 10 comes to rest and moves the frame further in the direction of arrow 16. The actuators are the Switches 2 and 3 are pushed back further and the profile parts 9 and 30 come to rest against the stops 5 and 6. Is the The precision switches are activated 7 and 8 actuated. These precision switches are essentially movably mounted in the stops 5 and 6 flaps 18 formed, which are adjusted so that when the flap is pushed back into the plane of the stops, the switching element is operated. The switching element 19 is adjustably mounted in a threaded hole in the stop 5 or 6.

The switching process on the precision switch 7 or 8 cannot be triggered if by any circumstances, for example the intended position cannot be reached due to contamination, foreign bodies or the like. In these cases it will in it either one or the other precision switch is not actuated.

The insertion device H is sunk under the surface of the table 17 before it is actuated. The insertion device k is driven by the cylinder-piston arrangement 12. When the drive 12 is actuated, the slide-in device (FIG. 2) moves in the direction of arrow 20. The slide-in device slides on the cam track 13. The spring 21 acts with the

Cam track 13 together and leaves the insertion device
when the drive 12 is not acted upon, sink under the table surface.

It is not necessary that the insertion device H
steps back completely under the table surface when the
Drive 12 is not acted upon. A slight lowering is sufficient to facilitate the process of inserting the window frame.

The drive 12 is preferably arranged to the side of the connection point 11, so that the connection point both remains accessible from below as well as from above.

The precision switches 7 and 8 operate the processing devices mentioned at the beginning. Before switching on
of these processing devices, it is recommended that
First, additional clamping means IH and 15 of known training enter puncture, which hold the window frame 1 against the table 17. These clamping means IH and 15 are, for example, pressure medium-operated clamping plates.

Claims (7)

Patent attorney, ·, '; ,; . '·. '' ".. '\ Dipl.-ing. HE LMUT PFISTEJ ?. ·,. ·.: ..: ..: d- & w5memmingen / bayern Telephone (08331) 651 C3 Postscheckkonto Munich No. 134339-805 Bank account: Bayerische Vereinsbank Memmingen 21/1 Subject: G 7? OU? 69-3 - Fa. Urban GmbH & Co., Elektret .chnik KG, Memierungen Protection claims 1. Clamping device for machines for processing the corner connection of window frames or the like made of plastic profiles, characterized in that switches are in the slide-in path of the window frame (1) on the machine table (2, 3) protrude and that an insertion device (Λ) is provided, which the window frame against stops (5, 6) presses, in the area of which precision switches (7, 8) are provided. 2. Clamping device according to claim 1, characterized in that of the switches (2, 3) in the slide-in path a switch (2) the one profile part (9) and another switch (3) the other profile part (10) of the window frame (1) is assigned. For the order wrapping Qis. yflt djfe * Qet) ührerfdV8l) ug3 'der, Dfeytschen Patentanwalfskammer
, 'Erfyfl & qgjort Jurjd. £> ericrrt ^ st (inii _t Mfcrnn | ingen 3. Clamping device according to one or both of the preceding claims, characterized in that at each a precision switch (7, 8) is arranged on each of the stops (5, 6). 4. Clamping device according to one or more of the preceding claims, characterized in that the insertion device (4) in the region of the connection point (11) between the two profiled parts (9) on the window frame (1) angre ^{: f} t. 5. Clamping device according to one or more of the preceding Claims, characterized by a lifting device (13) for the insertion device (Λ). 6. Clamping device according to one or more of the preceding Claims, characterized in that the lifting device from the drive (12) of the insertion device (Λ) is driven. 7. Clamping device according to one or more of the preceding Claims, characterized by a curved track (13) for the insertion device (4). The patent attorney iih ^