DE4414240A1 - Device for cutting gratings - Google Patents

Abstract

A device for cutting gratings (10) is realised by means of a motor-drivable cutting-off wheel (20) which can be guided transversely through the grating (10). This device is distinguished by the fact that at least one guideway (28, 30) is present, along which the cutting-off wheel (20) can be guided. This guideway (28, 30) is to be fixed (36) to the grating (10) at any desired location. <IMAGE>

Description

Technical field

The invention relates to a device for separating Gratings. Such gratings consist of crosswise existing metallic rods. They become Covering cutouts in ceilings or as a step fen used on stairs. Their flat shape depends on the shape of the outline of the recess to be covered or the respective step. Therefore have gratings often a flat surface that deviates from the rectangle or square Shape.

State of the art

Gratings are approximately as large panels in dimensions Made 2 meters by 4 meters. From this grating plat ten are processed in the processing companies such. B. Locksmiths, individual grate sections cut out The sections are then made with a metallic rod banded in a band. Cutting out the individual ab cuts are made with a so-called hand ripper. A derar tiger hand-held separator has an electric motor, the one Cutting disc drives. Conducting such a relative heavy manual separator along a desired separation path Grid plate is physically demanding on the one hand; other on the other hand, the result is often unsatisfactory. Problems arise especially when the separation path at an angle to the orientation of the bars of the grating should run. The resistance of the cutting disc from that Material of the grating is opposite is below of different sizes, depending on whether the separating path runs across guides or grinds individual bars of the grating  runs through a longer area of a rod. Thereby is the required for a clean separation track strength that the operator has when operating the hand door ners must apply along the desired separation path, under different sizes. However, this is only un for a manual operation completely accomplished. The consequence of this is one more or less deviating from the desired separation path, serpentine dividing track. It is therefore required in practice Such snake line cuts through a rework processing in a more or less flat cut fen to easily frame the edge of the individual To allow grating with a binding tape; this Binding tape must namely across from everyone on the tape hitting bars of the grate are touched to all Weld the bars to the belt and fasten them with it can. This reworking of the respective cut could be done by an automatically running separating device tion, in which the cutting disc along a predetermined course venbahn is automatically controlled externally via the grating, avoid. Such devices are for example Cutting steel plates with the help of so-called cutting devices known. Such a device would for the relatively small businesses that have such gratings process, be far too complex. That would be the investment A lot of effort for such a cutting device large. Also the required space of such a Zu cutting device would be for the companies mentioned here be, such as B. for a locksmith, too large.

Presentation of the invention

Based on this prior art, the Invention based on the task of a business overall easy way to separate grids to indicate rust, in which this separating cuts to any Longitudinal alignment of the bars standing at right angles to one another of the grating can be aligned.  

This invention is ge by the features of the main claim give. The invention stands out in the known Vorrich device for cutting gratings, which a motor drivable cutting disc includes, characterized in that at least there is a guideway along which the cutting disc is feasible, and that this at least one track on be anywhere on the grate can be attached. The This device has several advantages. Once can be achieve an exact cut because the cutting disc is no longer held by an operator by weight and over the Grating must be performed; the cutting disc can rather weight based on the guideway, so that le diglich a longitudinal adjustment of the cutting disc, along the Guideway, may remain required. This longitudinal ver an operator can also push the cutting disc can easily be effected without mechanical help. Thereby also at an angle to the individual bars of the grating separating cuts easily possible. Any out direction of these cuts relative to the orientation of the individual bars of the grate is possible in a simple manner Lich, since the guideway ver along the cutting disc is attached at any point on the grating can be.

This attachment of the guideway to the grating can for example, a plug or clamp connection. This Plug or clamp connection can on the intersection of act on two crossing bars of the grating; it is also possible, however, on the bar area from for example, to act on a bar of the grating, the two two crossing areas of crossing bars grid is present. In addition, from the Clamping or plug connection also by means of a cantilever in the space between bars of the grate penetrated become. This clamp or plug device can also in be adjustable in a plane parallel to the grating, so  that in every position of the one carrying the guide rod Component a way to attach to the grate can be created. Different plug in this regard or clamping arrangements can be found in the exemplary embodiment men.

The cutting disc has proven to be advantageous to attach to a sled that is parallel to two along mutually arranged guideways can be moved.

The two guideways are in their end areas each attached to a frame. The frame can be his partly on the grating, as already stated above, locally can be attached as required. In this way the Füh lanes fixed above the guide grate be classified.

To make the cutting disc as simple as possible for each to provide for the intended cut, it has proven to be expediently emphasized, the cutting disc perpendicular to the The length of the two guideways is adjustable arrange, in a plane that is parallel to the plane lies, which is defined by the two guideways. In addition, the cutting disc can also be perpendicular to this level defined by the two guideways will be arranged adjustable. In this way, the Cutting disc on the side at any distance from the guide path and also relative to the level of the grate it differed Lich arranged high. The separating cut can therefore partially or completely through the bars of the grate penetrate from above. It can therefore also be single tracks or separating grooves are milled into the grate.

Not only straight, but also arch-shaped cuts can be created very easily in this way. It is le diglich required, the one or the two guideways to be provided accordingly curved.  

In all of these configurations of the cutting according to the invention device it proves advantageous that separating cuts can be carried out with great precision and with a device that overall is not a large component Effort required. For example, the Cutting disc be part of a commercially available hand separator, then only on the guideway, for example on the adjustable slide along the guideway, preferably to be arranged as indicated above. The Arrangement can also be detachable, so that the hand separator after as before also be used for other cutting work could.

Further features and advantages of the cutting Device are those listed in the claims Features and the following embodiments remove.

Brief description of the drawing

The invention is described below with reference to the drawing illustrated embodiments described and he purifies. Show it:

Fig. 1 is a perspective plan view of a first embodiment of an inventive cerium separating device,

Fig. 2 is a side view of the device Zertrenn accelerator as Fig. 1,

Fig. 3 is a perspective detail view of a portion of the Zertrenn device of the invention according to Fig. 1,

Fig. 4 is a sectional view of a first possible ness for setting the Zertrenn device on a grating,

FIGS. 5 and 6 is a sectional view similar to FIG. 4 for another way to fix the Zertrenn- device on a grating in loosely setztem condition and in the fastened state, and

Fig. 7 schematic plan views of further, various options for fixing the separating device on a grate.

Ways of Carrying Out the Invention

A grate plate 10 is to be divided along a dividing path 12 . This separating path 12 is only one of several separating paths that have to be made in succession in the plate 10 in order to cut out a grating with the desired dimensions from the plate 10 .

In the present example, the separating path 12 runs obliquely to grating bars 14 , 16 which are present crosswise. Similar to how the present plate 10 is bordered with a circumferential flat rod 18 , the grating to be cut out is also continuously bordered with a comparable rod 18 . The rod 18 then runs around the grating along the separating tracks 12 .

A cutting disc 20 , which is part of a cutting device 22, is used for cutting. In the present case, the separating device 22 consists of a so-called hand separator, as is usually available in the trade. This separating device 22 has an electric motor which can drive the cutting disc 20 accordingly.

The separator 22 is BEFE Stigt on a frame part 24 . The frame part 24 is in turn firmly attached to a carriage 26 . The carriage 26 can be moved along two guide rods 28 , 30 . The guide rods 28 , 30 are in turn fastened at the ends to a frame 32, which is upper in FIG. 1, and a frame 34 which is lower. Both frames 32 , 34 can be fastened to the plate 10 via a fastening device 36 , which is described in more detail below.

The frame 34 (and also comparably the frame 32 ) have a base plate 40 with which they can be fastened to the fastening device 36 from above on the plate 10 , who can. On the plate are spaced from each other two fastening jaws 42 , 44 attached. The left guide rod 28 is held between the left fastening jaws 42 , 44 and between the right fastening jaws 42 , 44 the right guide rod 30 is held firmly clamped in its respective end region. By actuating a corresponding lever 46 , the guide rods 28 , 30 can be pushed to different degrees between the jaws 42 , 44 and then clamped in place. This type of definition is present both on the frame 34 and on the frame 32 .

On the guide rods 28 , 30 , the carriage 26 is movable in the longitudinal direction of the two guide rods 28 , 30 , in the longitudinal direction L ,. To manually move this carriage, a handle 54 is fastened on its support plate 52 . On the support plate 52 is a further plate 56 before present, which can be adjusted rela tively to the support plate 52 transversely to the longitudinal direction L, in the transverse direction Q. For this purpose, two spaced-apart elongated holes 58 , 60 are present in the plate 52 . In each of these elongated holes 58 , 60 engage two pins 64 projecting upward from the support plate 52 . In this way, tilting or twisting of the plate 56 relative to the support plate 52 is not possible. About actuated by a He bel 66 clamping device 68 , the plate 56 be fixed with respect to their orientation to the support plate 52 .

Two supports 70 , 72 are fastened on the plate 56 . On the right support 70 in the drawing, the rear end of the separating device 22, which is designed as a manual separator, is articulated via a bolt 73 . In the front support 72 there is an arcuate cut-out 74 along which the front end of the separating device 22 is pivotally attached. The respective pivoting orientation of the separating device 22 can be determined via a lever 76 . In this way, the cutting disc 20 of the cutting device 22 can be set at different heights.

The fastening device 36 provided on the frame 32 , 34 has components 80 projecting into the plate 10 from above, some of which are shown schematically in FIG. 7. The components 80.1 , 80.2 act diagonally opposite one another on an intersection area 82 of two bars 14 , 16 . In this way, the plate 40 and thus the frame 34 and in a comparable manner also the frame 32 can be fixed immovably at the intersection area 82 . A lateral adjustment possibility for the two components 80.1 and 80.2 parallel to the plane of the plate 10 in a certain range ensures that the fastening device 36 can always hit an intersection area 82 with any positioning of the frame 32 or 34 .

An intersection area 82 can also be surrounded by four parts 80.3 , 80.4 , 80.5 , 80.6 . It is also possible to fix oneself in the interior space 84 delimited by four intersection areas with a correspondingly encircling component 80.7 . The construction part 80.7 engages directly in the intersection areas 82 and is therefore immovable in the plane of the plate 10 hold ge. In the component 80.8 shown further , an abutment on the cross bars 14 , 16 is ben in an interior 84 . This also ensures a laterally immovable bracket.

Finally, components can also lie on two opposite sides at two crossing regions 82 , as is shown schematically, for example, with components 80.9 , 80.10 .

All of these components 80 ensure that a frame 32 , 34 at any point above a plate 10 on the latter can be Stigt.

In Fig. 4, another embodiment for a fastening supply device 36 is given. This fastening device 36 rests on the plate 10 from above with the aid of a rubber plate 90 . For this purpose, the rubber plate has an opening 92 which is larger in diameter than the interior of intersecting bars 14 , 16 . above this plate 90 , the base plate 40 is present. The opening 92 is also present in this base plate 40 . A disk 94 abuts from above and a disk 96 bears against the lower edge of the rod 14 from below. The base plate 40 and the plate 90 can then be clamped with the aid of a screw 98 between the two disks 94 , 96 . During this clamping, the plate 90 , which permits a corresponding deformation, is pressed between the regions 100 which are present between the cross bars 16 . The plate 90 thus encompasses these cross bars 16 in a slight curvature 91 . Already thereby and because of the larger coefficient of friction of the base plate 90 compared to the metallic material of the plate 10 , a firm contact of the plate 40 on the plate 10 is guaranteed. The size of the opening 92 in both the plate 90 and in the Grundplat te 40 ensure that with each alignment of the plate 40 above the plate 10, a screw 98 can always be passed between two rods 14 , 16 .

While according to the representation. Fig. 4, the plate 40 has no direct contact with the plate 10 , this con tact is in accordance with the illustration. Fig. 5 and 6. in the clamped state of the plate 40. For this purpose, a recess 102 is present in the plate 40 in the area of the rubber-like plate 90 . This recess is slightly smaller than corresponds to the thickness 104 of the plate 90 . As a result, the plate 40 does not lie directly on the plate 10 in the non-consolidated state ( FIG. 5). In the attached state, the two plates 94 , 96 and a screw 98 - similar to the embodiment according to. Fig. 4 - can be produced, the rubber plate presses into the spaces 100 of the rods 16 partially, so that the plate 40 then lies directly on the plate 10 from above ( Fig. 6). As a result, tilting of the plate 40 and thus of the frame 32 , 34 is not possible due to forces acting on them eccentrically, for example caused by the separating device 22 . On the other hand, a sufficiently firm hold of the frame 32 , 34 on the plate 10 can be made possible by the frictional interaction of the base plate 40 or the rubber-like plate 90 and the plate 10 .

To separate the plate 10 , the racks 32 , 34 are aligned parallel to the desired separating path 12 on the plate 10 . In order to be able to cut the plate 10 from the outside with the Trenneinrich device 22 or the cutting disc 20 , a frame 32 is attached to the plate 10 in a cantilever manner. For this purpose, the fastening device 36 for the frame 32 is attached to one end of the base plate 40 . The fastening supply jaws 42 , 44 of this frame 32 are attached to the other end of this base plate 40 ( Fig. 2). This makes it possible to position the carriage 26 outside the plate 10 , as illustrated in FIG. 1. Before starting to cut, the lever 76 ( FIG. 3) must be loosened and the separating device 22 , that is to say in the present case the manual separator with its separating disc 20 , must be aligned correspondingly lowered relative to the plate 10 . Then the lever 76 is to be tightened and the desired orientation of the hand disconnector is fixed. After switching on the electric motor and corresponding rotation of the cutting disc 20 , the slide along the guide rods 28 , 30 is then gripped by pushing the hand 54 ( FIG. 3) emotional. The cutting disc 20 will then move exactly along the desired cutting path 12 . In this way, an exactly clean, even oblique separating cut can be made through the plate 10 .

The frame 34 could be formed similar to the frame 32 Auskra and then attached to the plate 10 . In this way, the plate 10 can be completely severed by a single feed movement of the slide 26 with its separating device 22 . By adjusting by means of the lever 66 ( Fig. 3), the readjustment of the position between the separating track 12 and the separating device 22 or the separating disk 20 can be made possible.

Claims (17)

1. Device for cutting gratings with

• a motor-driven cutting disc that can be passed through the grating,

characterized in that

• - At least one guideway ( 28 , 30 ) is present, along which the cutting disc ( 20 ) can be guided,
• - This guideway ( 28 , 30 ) on the grating 10 ) can be fastened locally ( 36 ).

2. Device according to claim 1, characterized in that

• - The cutting disc ( 20 ) is attached to a carriage ( 26 ), the guideways ( 28 , 30 ) can be moved along two mutually parallel Füh,
• the two guideways ( 28 , 30 ) are fastened in their end regions to a frame ( 32 , 34 ),
• - The frame ( 32 , 34 ) on the grate ( 10 ) locally to be attached arbitrarily ( 36 ).

3. Device according to claim 1 or 2, characterized in that

• - The cutting disc ( 20 ) is adjustable perpendicular to the longitudinal extent (L) of the two guideways ( 28 , 30 ), in a plane that is parallel to the plane defined by the two guideways ( 28 , 30 ).

4. The device according to claim 3, characterized in that

• - The cutting disc ( 20 ) is adjustable perpendicular to the plane bar, which is defined by the two guideways ( 28 , 30 ).

5. Device according to one of the preceding claims, characterized in that

• - The attachment of the guideway ( 28 , 30 ) on the grate ( 10 ) via a plug-in connection ( 80 ) can be produced, which acts on the crossing area ( 82 ) of two intersecting rods ( 14 , 16 ) of the grate ( 10 ) .

6. Device according to one of the preceding claims, characterized in that

• - The attachment of the guideway ( 28 , 30 ) on the grate ( 10 ) via a plug connection ( 80.8 ) can be produced, which acts on the rod area ( 14 , 16 ), the inter mediate crossing areas ( 82 ) of crossing bars ( 14 , 16 ) of the grating ( 10 ) is present.

7. Device according to one of the preceding claims, characterized in that

• - The fastening of the guideway ( 28 , 30 ) to the grate ( 10 ) can be produced via a plug connection ( 80.7 ), which acts in the free space ( 84 ) between crossover areas ( 82 ) of bars ( 14 , 16 ) of the grille rust ( 10 ) is present.

8. Device according to one of the preceding claims, characterized in that the plug connection ( 80 ) from the direction of the guide track ( 28 , 30 ) on the grating ( 10 ) acts. 9. Device according to one of the preceding claims, characterized in that

• - The fastening of the guideway ( 28 , 30 ) to the grate ( 10 ) via a clamp connection ( 91 , 94 , 96 , 98 ) can be set forth, which is flat on the grate ( 10 ) and / or on one or more of its bars ( 14 , 16 ) is effective.

10. The device according to claim 9, characterized in that the clamping effect can be produced by means of mechanically pressing contact surfaces ( 91 , 94 , 96 ) or by means of magnetic forces. 11. Device according to one of the preceding claims, characterized in that

• a first frame ( 32 ) is present, which can be attached to the free edge area of the grate ( 10 ) at the end of the collar,
• the end regions of two parallel guide rods ( 28 , 30 ) are fastened to this first frame ( 32 ),
• a slide ( 26 ) which can be moved along the guide rods is present,
• - An electrically driven cutting disc on the Schlit th ( 26 ) is attached,
• - A second frame ( 34 ) is present, which can be plugged or clamped on / or between any crossing areas ( 82 ) of bars ( 14 , 16 ) of the grating ( 10 ).

12. The apparatus according to claim 11, characterized in that the carriage ( 26 ) is adjustable perpendicular to the guide rods ( 28 , 30 ). 13. The apparatus of claim 11 or 12, characterized in that the cutting disc ( 20 ) is adjustable perpendicular to a plane bar, which is defined by the two guide rods ( 28 , 30 ). 14. Device according to one of the preceding claims, characterized in that the two guide tracks ( 28 , 30 ) are aligned along concentric track curves. 15. Device according to one of the preceding claims, characterized in that the cutting disc ( 20 ) on both sides of the at least one Füh approximately track ( 28 , 30 ) is to be arranged. 16. The apparatus according to claim 15, characterized in that the cutting disc ( 20 ) on both sides of the carriage ( 26 ) is assigned to, which is movable along the at least one guide track ( 28 , 30 ).