EP2524785A1 - Device for cutting flat workpieces - Google Patents

Abstract

The device (1) has a planar base body (2) comprising a support zone (3) for supporting a workpiece (4) i.e. tile (5), to-be-cut. A guide rail (8) is aligned along the base body and arranged across the support zone. An end of the guide rail is pivotally connected to the base body in a vertical direction. A user-side end of the guide rail is passed through a guide dome (11), which is projected from the base body. The guide rail is supported at the guide dome at different heights in a fixed position over a grip portion (10) i.e. rotary-sliding grip portion.

Description

The invention relates to a device for cutting flat workpieces, in particular tiles, according to claim 1.

State of the art

Devices for cutting flat workpieces, in particular tiles, comprise in the simplest case a cutting wheel or a scoring tool, which is pulled along the length of a laid on the tile cutting ruler against the tile over the tile. This requires in each case the laying of the cutting rule on the tile, the holding of the cutting rule in the respective desired orientation and independently of the handling of the cutting tool.

In addition, devices for cutting tiles are known in which are provided as a guideway for a working slide two spaced parallel, positionally stable guide rods. The working carriage carries a cutting wheel and a pivotable handle on which a breaking punch is attached. For each tile to be cut a support zone is provided on the base body, which is overlapped by the guide rods of the work carriage, so that the tile, placed in the support zone, between the main body and the guide rods or, depending on the position of the working slide, between the main body and the work carriage is located. Accordingly, the access to the tile is difficult.

Disclosure of the invention

The invention has the object of providing a device for cutting flat workpieces, especially tiles, primarily to the effect form that result in favorable working conditions.

This is achieved with a device according to claim 1, wherein such a device is further developed in particular by the features taken up in the subclaims in an advantageous manner.

In the apparatus according to the invention, the basic orientation is initially predetermined by the articulation of the guide rail which can be pivoted to the main body in the vertical direction. For the user, the intervention possibilities with respect to the alignment and displacement of the guide rail to the workpiece are limited to the setting of different altitudes, with the arrangement of the guide rail passing through to a projecting from the main body guide dome arrangement in the area remote from the pivot axis also without disadvantages for the work a transverse guide is ensured, which ensures the necessary transverse stability even with long guide rails and the pivot axis containing pivoting guides, which also have a certain play transverse to the pivot axis as pivot joints. In addition, the guide dome makes it possible in a simple manner to limit the pivoting angle for the guide rod as a whole as well as to specify intermediate layers, so that a positionally fixed fixation of the guide rail in predetermined pivoting positions can be achieved via the guide dome without additional equipment if the corresponding positional fixing is under use of the provided on the guide rail in the region of the free end handle part.

This is possible in a particularly simple and easy-to-use manner, when the gripping part is fixed against the user-facing rear side of the guide dome adjacent to the guide dome in appropriate height positions. For this purpose, the guide dome may have depressions on its rear side facing the grip part in the height positions predetermined for the locking, into which the grip part engages.

For this purpose, the handle part may be designed in particular as a rotary push handle, which is guided on a preferably cylindrical approach of the guide rail. Relative to several, in particular two in the direction of the pivot plane of the guide rail spaced superimposed, provided for supporting the guide rail recesses, it proves to be expedient if the guide dome has a guide slot connecting these recesses for a provided in the transition from the guide rail on the handle part rail part and on the part of the grip part expiring on the guide dome an annular collar is provided which exceeds the width of the guide slot in diameter, so that on the annular collar, regardless of the respective rotational position of the rotary push handle, the rotary push handle on the axially resilient support in the transition area is supported between the recesses against the guide dome.

To the collar are axially offset and radially projecting web-like locking tabs provided whose width is adapted to the width of the guide slot, so that the rotary push handle in the rotational position in which engage the lobes in the guide slot, over the annular collar in the edge region to the guide slot against the supported by the guide slot wall of the guide dome is supported and is fixed in this rotational position.

The length of the extending between the radially outer ends of the lobes diagonal, so the size of the diameter of the locking lobe enclosing circumference corresponds to the diameter of the wells, so that the rotary push handle in its respective overlap position to the wells is only rotatable when axial Loading the rotary push handle after the remote from the guide dome side, so by pulling the rotary push handle, the locking tabs in the region of the respective recess axially pulled out of its engaged position in the guide slot and thereby can be rotated in a covering the bottom of the wells position. In such a twisted position of the rotary push handle is axially supported against the bottom of the wells and secured simultaneously with the guide rail in the given pivot position of the guide carriage corresponding altitude to the guide dome.

To such a locking rotational position of the rotary push handle, with full overlap of the locking tabs to the side of the guide slot lying edge areas the bottom of the wells to signal the user haptically and / or acoustically, are provided on the bottom surface of the respective recess to the guide slot diametrically opposite each other against the locking tabs projecting nubs on which the locking tabs arise during rotation of the rotary push handle, which is for the am Rotary push handle as a handle attacking user is felt and / or triggers appropriate locking noises. In addition, the knobs can serve a corresponding snap-lock of the respective rotational position, if in the locking tabs the dimples corresponding depressions are assigned.

The device according to the invention thus has the advantage, in addition to good handleability, of protecting the device against incorrect operation by means of haptic and / or acoustic signals.

Further details and features of the invention will become apparent from the claims, the drawings and the description.

Fig. 1

in perspektivischer Draufsicht eine Gesamtdarstellung der erfindungsgemäßen Vorrichtung zum Schneiden von flächigen Werkstücken, insbesondere Fliesen,

Fig. 2

eine weitere Darstellung der in Fig. 1 gezeigten Vorrichtung in Perspektive, mit Blick auf die Vorrichtung ausgehend von der im hinteren Teil vorgesehenen Anlenkung für eine als Führungsbahn für einen Arbeitsschlitten dienende Führungsschiene, die sich längs der Vorrichtung erstreckt und im Bereich des vorderen Teiles der Vorrichtung einen Führungsdom durchsetzt,

Fig. 3

eine schematisierte, vereinfachte Frontalansicht der Vorrichtung gemäß Fig. 2,

Fig. 4 bis 7

eine am vorderen Teil der Vorrichtung aufliegend zu deren Grundkörper vorgesehene Stützauflage für die Führungsschiene in deren auf das in der Auflagezone des Grundkörpers aufliegende Werkstück abgelegter Stellung, wobei die Stützauflage zum Grundkörper in Längsrichtung verschieblich ist und zum Grundkörper in ihrer Höhenlage unterschiedliche Stützzonen aufweist, in Verbindung mit Details zur lageveränderbaren Festlegung der Stützauflage gegenüber dem Grundkörper,

Fig. 8

in einer dem Verlauf der Schnittführung X-X in Fig. 1 entsprechenden Schnittführung den vorderen Teil des Grundkörpers mit darauf aufsetzendem Führungsdom und den Führungsdom durchsetzender Führungsschiene, an deren Ende, über den Führungsdom auskragend, ein Drehschiebegriff zur Positionierung der verschwenkbaren Führungsschiene 8 in verschiedenen Höhenlagen zum Führungsdom vorgesehen ist,

Fig. 9

Stellungsbilder, in denen die Positionierung der Führungsschiene in verschiedenen Höhenlagen zum Führungsdom über den endseitig zur Führungsschiene vorgesehenen Drehschiebegriff veranschaulicht ist,

Fig. 10 bis 13

Prinzipdarstellungen zum Arbeitsschlitten und dessen Funktionen beim Einsatz der vom Arbeitsschlitten getragenen Arbeitswerkzeuge in Form eines Schneidrades und von Brechwerkzeugen, wobei der Arbeitsschlitten in einer prinzipiellen Schnittdarstellung entsprechend der Schnittführung X-X in Fig. 1 gezeigt ist,

Fig. 14 und 15

weitgehend schematisierte Darstellungen des Arbeitsschlittens in Perspektive (Fig. 14) und in Ansicht (Fig. 15) in Verbindung mit der als Griffbügel ausgebildeten Handhabe zugeordneten Betätigungsvorrichtungen zur Verriegelung der Handhabe in unterschiedlichen, verschiedenen Stellungen der Arbeitswerkzeuge entsprechenden Stelllagen, und

Fig. 16 und 17

weitere schematisierte Darstellungen zur Veranschaulichung von Stelllungen der Arbeitswerkzeuge und der Federabstützung von diese Arbeitswerkzeuge führenden Hebeln, um die Arbeitswerkzeuge, nämlich das Schneidrad und die Brechstempel, wenn sie nicht in Funktion sind, unabhängig voneinander jeweils in einer in den Arbeitsschlitten verlagerten Ruheposition zu halten, bei in der Ausrichtung des Arbeitsschlitzes der Fig. 1 entsprechender Darstellung.

In the context of the invention, the forms of embodiment and their features, some of which have been dealt with independently in the drawings and in the description, also form combinations which prove expedient for working with devices of the type according to the invention. Show it:

Fig. 1

in a perspective plan view an overall view of the device according to the invention for cutting flat workpieces, in particular tiles,

Fig. 2

another illustration of in Fig. 1 shown device in perspective, looking at the device from the provided in the rear part linkage for serving as a guideway for a working guide rail which extends along the device and in the region of the front part of the device passes through a guide dome,

Fig. 3

a schematic, simplified frontal view of the device according to Fig. 2 .

Fig. 4 to 7

a resting on the front part of the device provided to the base body supporting support for the guide rail in its resting on the resting in the support zone of the body workpiece position, wherein the support support is displaceable to the main body in the longitudinal direction and the base body in their altitude different support zones, in connection with details for the positionally adjustable fixing of the support support in relation to the base body,

Fig. 8

in a course of the cutting XX in Fig. 1 corresponding cutting guide the front part of the base body with guide dome on top and the guide dome passing through the guide rail, at the end, projecting over the guide dome, a rotary push handle for positioning the pivotable guide rail 8 is provided at different altitudes to the guide dome,

Fig. 9

Positional images in which the positioning of the guide rail is illustrated at different elevations to the guide dome over the end of the guide rail provided rotary push handle,

Fig. 10 to 13

Schematic representations of the working carriage and its functions when using the work carriage carried work tools in the form of a cutting wheel and crushing tools, the working carriage in a basic sectional view corresponding to the cutting guide XX in Fig. 1 is shown

FIGS. 14 and 15

largely schematized representations of the work sled in perspective ( Fig. 14 ) and in view ( Fig. 15 ) in conjunction with the handle designed as a handle associated actuating devices for locking the handle in different, different positions of the working tools corresponding positions, and

FIGS. 16 and 17

further schematic representations for illustrating positions of the working tools and the spring support of these working tools leading levers to keep the working tools, namely the cutting wheel and the breaking punch, when they are not in operation, each independently in a displaced in the working carriage rest position at in the alignment of the working slot the Fig. 1 corresponding representation.

Fig. 1 shows a device 1 for cutting flat workpieces, especially tiles. The device 1 has a likewise planar main body 2. The main body 2 forms the support frame 66 for a support zone 3, on which the respective workpiece 4 to be machined is placed flat, wherein as such a workpiece 4 in Fig. 1 a tile 5 indicated by dashed lines only in its outlines is shown.

The support zone 3 extends only over a user-side access end remote, rear part 6 of the length of the base body 2 in coverage of the body 2 in its width. In the longitudinal direction connects to the support zone 3 of the rear part 6, while opposite the front part 7 of the support frame 66 is spaced from the support zone 3. In the longitudinal direction of the base body 2 of a guideway, which is formed by a guide rail 8, overlapped, which is articulated pivotably on the rear part 6 of the support frame 66 via a transverse axis 9 in the vertical direction and terminates in the end portion of the front part 7 in a handle portion 10 , Near the end of the front part 7 of the support frame 66, the guide rail 8 is overlapped by a guide dome 11 with extending in the vertical direction guide opening 12. In the region of the guide dome 11, a supporting support 13 for the guide rail 8 is provided under the guide rail 8 between this and the front part 7 of the support frame 66 of the base body 2.

On the main body 2, a stop arrangement 14 is provided lying on the rear part 6 of the support frame 66, which is designed as an angle measuring device 15 and the support zone 3 facing a stop leg 16, against which a respective resting on the support zone 3 workpiece 4 can be applied, so that the workpiece 4, resting on the support zone 3, under different angular positions to the guide rail 8 can be aligned. The guide rail 8 determines the guideway for a longitudinally displaceably guided on the guide rail 8 guided work carriage 17. The working carriage 17 is a carrier of working tools 18, the in Fig. 1 are only partially visible, and a handle 19 in the form of a handle bar 20, the web 21 extends transversely to the guide rail 8 and is connected via lateral arms 23 in the longitudinal direction of the guide rail 8 pivotally connected to the carriage body 22. About the embodiment formed as a handle bar 20 handle 19, the displacement of the working carriage 17 along the guide rail 8 formed by the guide track. Furthermore, by pivoting the handle 19 and the work tools 18 are controlled in their access to the workpiece 4.

The closer structure of the work carriage 17 show the FIGS. 14 to 17 and the work functions of the work carriage are explained in particular with reference to these figures.

First, based on the Fig. 2 to 7 the structure of the guide rail 8 and its support and attachment to the support frame 66 of the body 2 explained. The guide rail 8 is constructed from two parallel, in cross-section L-shaped profiles 24 (FIG. Fig. 3 ), which are connected in their position to each other at their expiring in the region of the rear part 6 and the front part 7 ends via spacers 25 and 26, wherein the rear part 6 associated spacer body 25 articulated via the transverse axis 9 hinged to a holding part 27 is. The support member 27 is in turn on the support frame 66 of the base body 2 penetrating support elements 28, such as support pin, the base body 2 in the vertical direction resiliently displaceable supported. This is characterized in that supporting springs 29, in particular as helical springs, are clamped around supporting elements 28 formed as support pins, between the base body 2 and abutment surfaces lying in the region of the free ends of the support elements 28. These stop surfaces are in Fig. 2 formed by a cross bar 30 connecting the free ends of the support elements 28. Thus, a pivotable and changeable by displacement of the transverse axis 9 in the vertical direction in their distance to the base body 2 holder of the guide rail 8 is given at the rear part 6, so that the altitude of the guide rail 8 to the backbone 2 to the height of the respective workpiece 4, so for example, to the height of the respective, between the guide rail 8 and the skeleton 2 lying tile 5 is to be adjusted. This is also illustrated in the schematized view of the rear part 6 according to FIG Fig. 3 , wherein like reference numerals are used for the corresponding parts.

A corresponding adjustment of the altitude of the guide rail 8 on the front part 7 is made Fig. 2 and the Fig. 4 to 7 seen. This is done using the support pad 13, which is provided under cross-leadership of the guide rail 8 in the region of the spacer body 26. This shows how out Fig. 2 recognizable, a to the guide rail 8 engages, down over the guide rail 8 protruding foot part 31 ( Fig. 8 ). This foot part 31 are step-shaped graduated on the support support 13 and in the longitudinal direction of the guide rail 8 lying one behind the other support zones assigned 32 to 34, of which the support zones 33 and 34, as shown in FIG Fig. 5 In particular, be seen lying on a raised to the base body 2 level, so that arise in support of the foot portion 31 on one of the support zones 32 to 34 for the guide rail 8 at the front part 7 different altitudes, which in adaptation to the through the thickness set the given workpiece 4 given altitude. This in the illustrated solution, characterized in that the support surface 13 is arranged to be adjustable in the longitudinal direction of the guide rail 8 to the base body 2, so that different support zones 32 to 34 can be brought into covering position to the foot part 31.

The support surface 13 is designed in the illustrations as a support slide 44, which is arranged longitudinally adjustable in a recessed guide seat 35 of the base body 2. The longitudinal adjustment of the support slide 44 with securing the respective desired longitudinal position of the support surface 13 may, for example, as in Fig. 5 illustrated latching done. For this purpose, the guide receptacle in the direction of displacement of the support support 13 extending through slots 36 for locking hooks 37, which the underside of the main body 2, as in Fig. 5 indicated, a saw tooth is assigned. In a corresponding manner, or in addition, a latching connection, in particular a sawtooth connection between mutually corresponding surfaces of the support support 13 and the guide receptacle 35, as in Fig. 4 indicated at 38, be provided.

The grip portion 10 adjacent position of the support surface 13 allows not only matched to the altitude of the respective workpiece 4 support height for the guide rail 8 and a Unterfangen the guide rail 8 near the handle portion 10 so that based on the length of the guide rail 8 only a very short Lever arm between the support for the guide rail 8 against the support support 13 and the handle part 10 results. As a result, it is practically impossible that for example on the handle part 10 user-applied support forces lead to a pivoting and lifting of the guide rail 8 from the workpiece 4, especially since such overpressing also counteracts the resilient support of the guide rail 8 at the rear part 6.

The respective positional fixation in the support support 13 by a latching connection 38 between the support support 13 and the base body 2 presents itself as a preferred solution, which allows in particular necessary adjustment tool-free on the basis of elastic deformabilities.

Other simple adjustment options are in the 6 and 7 indicated in these figures, only one part of the support pad 13 is indicated in each case and in Fig. 6 a solution is illustrated in which a pin 39 is provided on the part of the support pad 13. This is assigned by the base body 2 in a manner not shown, a receiving hole. Further, the pin 39 is loaded by a spring 40 in the direction of its engagement position to the receiving hole, so that the respective lock can be solved at any time by raising the pin 39. In the presentation according to Fig. 7 is worked with a displaceably guided in the support pad 13 pin 41, for example, in a passage slot 36 according to Fig. 4 can be threaded and engages in its threaded position on the end provided claws 42 with appropriate rotational position edge portions to the passage slot 36. In this engaging position of the claws 42 of the pin 41 is supported by the spring 43, which must be compressed to release the connection.

As a result of the determination of a supporting height for the guide rail 8 in the region of the front part 7 and the opposite in the region of the rear part 6, in the vertical direction elastic support of the guide rail 8, it is possible to adjust the height of the workpiece 4 relative to a respective workpiece 4, in particular in the form of a tile 5, in the overlap area between the workpiece 4 and the guide rail 8 in their swiveled onto the workpiece 4 position reach at least approximately parallel extension of the guide rail 8 to the surface of the workpiece 4. This in a very simple manner and with the result that the approach ratios of provided by the work carriage 17 working tools 18 to the workpiece 4 remain practically the same over the respective working path. For such a task no height fixation of the guide rail 8 is required; Rather, it is due to the weight of the guide rail 8, a corresponding, supporting support to the workpiece 4. This remains even in the implementation of the work received, possibly even reinforced if, as in the inventive solution, the corresponding, applied via the handle 19 Feed forces and the actuating forces for the work tools 18 over the working carriage 17 to a load of the guide rail 8 in the direction of the workpiece to be machined 4 lead.

In the exemplary embodiment, the supporting support 13 formed as a support slide 13 is still provided at its the rear part 6 facing end with transverse to the guide rail 8 opposite and against the aufzulegende guide rail 8 laterally projecting guide members 45 whose facing guide flanks 46 in particular einlaufend bevelled in the direction to run the main body 2, so that the guide rail 8 in its respective, applied to the workpiece 4 working position on the support pad 13 is also page-guided. Thus, even inexperienced users a high-precision work is possible, and for professional use results in a significant reduction in work, since the orientation of the guide rail 8 is also guaranteed in the transverse direction; In addition, the guide members 45 laterally to the guide rail 8 lying, as a "handle" for the displacement of the support slide 44 to be used supports.

The transverse guide of the guide rail 8 via their pivoting paths between the workpiece 4 resting and raised relative to the workpiece 4 also serves the guide dome 11 with its in the pivoting direction of the guide rail 8 extending and U-shaped guide flanks 62 having guide opening 12. This has a transverse to the Flanks 62 running Rear wall 53 at which the connected via the spacer body 26 end portions of the profiles 24 end. Furthermore, the pivoting angle for the guide rail 8 is predetermined in its maximum size via the guide dome 11.

Furthermore, in the solution according to the invention, by means of cooperation of the guide dome 11 with a fastening part 47 provided on the side of the guide rail 8 in the area adjacent to the guide dome 11, it is also possible to fix desired pivotal positions for the guide rail 8. Such pivotal positions are, for example, a transport position as well as a position of the guide rail 8 pivoted relative to the base body 2, in which workpieces 4 can be introduced into or removed from the support zone 3, wherein this can advantageously also be achieved with both hands when the pivot position is locked. In this case, the transport position preferably corresponds to a position of the guide rail 8 in which it lies directly adjacent to the main body 2, but in which there is no contact between the working carriage 17 and / or the working tools 18 provided thereon and the base body 2, also in the contact zone 3, consists.

The fastening part 47 is formed at the end of the guide rail 8 which ends in the guide opening 12. Fig. 8 illustrates in this regard that the spacer 26, which is expiring on the front part 6 of the body 2 between the profiles 24 of the guide rail 8, a longitudinally projecting over the profiles 24 cylindrical projection 48, on which, the fastening part 47 associated, a guide bushing 49th is guided axially displaceable and rotatable. The guide bush 49 is the carrier of the handle 50 of the handle part 10, which is preferably connected as a molded part with the guide bush 49. Axial is the guide bushing 49 to the cylindrical projection 48 slidably supported at its free end by a spring 51. The spring 51 is enclosed to a provided in the end-side extension of the projection 48 and fixed to the approach 48, possibly also integrally formed with the shoulder 48 support member 52 and axially between a support member 52 end associated stop collar 63 and a formed by the end face of the bush 49 This or the associated support collar 65. As a result, the handle portion 10 is rotatable to the projection 48 and limited axially displaceable, thus forming a rotary push handle.

The trained so, a rotary push handle forming handle portion 10 11 11 recesses 54, 55 are assigned to the facing rear wall 53 of the dome, the predetermined, latching pivotal positions of the guide rail 8 correspond, wherein of the recesses 54, 55 in the embodiment by the lower recess 54th a transport position of the guide rail 8 is predetermined to the base body 2. The upper recess 55 corresponds to a pivotal position of the guide rail 55, in which a respective workpiece 4, so in particular a tile is introduced into the support zone 3 or removed therefrom.

Between the recesses 54, 55 extends, as from the position images according to Fig. 9 In particular, it can be seen, a provided in the rear wall 53 guide slot 59th

The handle 50 runs around to the guide bushing 49 in a foot part 56, which is formed by an annular collar 57 and two diametrically opposed, opposite the collar 57 projecting and annular collar 57 axially adjoining locking tabs 58 whose width of the width of the in the rear wall 53rd between the recesses 54, 55 extending guide slot 59 and approximately the diameter of the cylindrical projection 48 corresponds, so that the handle 50 is rotationally fixed in engagement with the locking tabs 58 in the guide slot 59.

The diameter of a circumference around the locking tabs 58 corresponds approximately to the diameter of the recesses 54, 55 and the annular collar 57 has an outer diameter which is greater than the width of the guide groove 59, such that over the length of the guide slot 59, also within the respective recess 54, 55 results in an overlapping support of the annular collar 57 to the rear wall 53, and between the outer diameter of the annular collar 57 and the perimeter around the locking tabs 58, so the inner diameter of the circular recesses 54, 55 remains only one of the locking tabs 59 covered annular zone 60 remains , In this annular zone 60, the depressions 54, 55 are provided on the bottom side with nubs 61, on which the locking tabs 58 run up when the handle part 10 is rotated about the projection 48. Preferably, in each case four nubs 61 are provided, two of which are diametrically opposed to one another, namely symmetrically to a straight line passing through the centers of the connecting via the slot 59, circular recesses 54, 55 extends. Thus, it is even possible to haptically make felt by turning the handle 10 locking in a predetermined by one of the recesses 54, 55 locking positions and / or audible signal through the Einrastgeräusch that occurs when the locking tabs 58 on the knobs 61 results.

To switch between the depressions defined by the depressions 54, 55, the locking tabs 58 must be aligned by rotating the handle member 10 in its mutually diagonal extent to the guide slot 59. As a result, a rotational position for the grip part 10 in the region of the transfer between the depressions 54, 55 is ensured, from which in each case identical locking possibilities exist in each of the depressions 54, 55.

In the illustration according to Fig. 8 is designed as a rotary push handle handle 10 - for better illustration - illustrated in its axially withdrawn against the force of the spring 51 position, which allows a rotation and in which the locking tabs 58 do not engage in the slot 59.

The machining access to the respectively launched in the support zone 3 workpiece, in particular a tile 5, respectively via the work carriage 17 associated working tools 18. The work carriage 17 is along the resting on the workpiece 4 guide rail 8 movable, the workpiece 4 in the Position to the support zone 3 in the solution according to the invention preferably determined solely by weight loading. However, if necessary, in addition, a corresponding fixing of the workpiece 4 to the support zone 3 in conjunction with a locking position of the guide rail 8 is possible.

The work carriage 17 carries, as already from the illustration according to Fig. 1 partially visible, the working tools 18, and is in a schematic representation of these working tools 17, namely a cutting wheel 73 and break punches 71, simplified in the Fig. 10 to 13 shown. This illustrate the Fig. 10 to 13 starting from a neutral position according to Fig. 10 the different applications for the tools 18 alone by adjusting the handle bar 20, wherein in the drawings, the deviating positions for neutral position, however, are not shown.

The illustrations according to FIGS. 10 to 13 show the carriage 17 in relation to the illustration according to FIG Fig. 1 opposite, offset by 180 ° alignment of the device 1 in a schematic sectional view along line XX in Fig. 1 , so that the work carriage 17, as in Fig. 1 , the handle bar 20 is inclined towards the rear end of the device 1 and for cutting the respective workpiece 4, in particular a tile, the working carriage 17 in the direction of arrow 72 in Fig. 10 along the guide rail 8 is moved. The arrow 72 thus marks the cutting direction.

The articulation of a cutting wheel 73 is effected on a lever 74, which is articulated as a two-armed lever 74 about an axis 75 pivotally to the carriage body 22, wherein the projecting in the direction of arrow 72 on the axis 75 of the lever 74 is acted upon by a spring 76, so that the cutting wheel 73 occupies a position raised relative to the workpiece 4, not shown here. The lever 74 is pivotable about the axis 75 in the direction of the engagement position of the cutting wheel 73 to the workpiece via a boom 77 to the shaft 78 which is rotationally fixed to the lateral arms 23 of the handle bar 20 and whose axis 79, the common axis of rotation for the boom 77th and forms the handle bar 20 with the web 21. Instead of a provided on the shaft 78 boom 77, the shaft may also be provided with a corresponding, the lever 74 acting cam.

If you go, as in Fig. 1 illustrated, assuming that the user-side access side is located on the guide rail 8 in the region of the front part 7 of the device 1, then, as is apparent from Fig. 1 seen, the work carriage 17 on the handle bar 20 by the user when cutting in the direction of the rear part 6 of the device 1 moved, with respect to the working carriage 17 in the direction of the rear part 6 of the device 1 inclined position of the handle bracket 20. Accordingly, the Cutting the handle bar 20 in one of the cutting direction according to arrow 72 corresponding direction of rotation, as indicated by the arrow 80 in Fig. 11 illustrated, out there in the Fig. 10 to 13 each shown neutral position, pivoted, upon appropriate action on the cutting wheel 73 on its engagement position to the workpiece 4, as in Fig. 11 indicated by the arrow 81.

By the pivoting of the handle bar 20 in the opposite direction of rotation, ie in the direction of the accessing user and the front part 7 of the device 1, due to the action of the spring 76, the cutting wheel 73 is pivoted back into its neutral position corresponding position, ie lifted from the workpiece 4, wherein the adjustment of the cutting wheel 73 in this direction preferably, which is not shown here, stop limit, in particular but for the handle in the invention preferably one of the neutral position according to Fig. 1 corresponding locking position relative to the working carriage 17 is given, illustrated by the engagement of a locking member 83 in a corresponding receptacle 84 on the working slide 17th

Based on the mentioned neutral position, and after releasing them preferably only against accidental initiation of the breaking process locking position is initiated while maintaining the sense of rotation in the direction of arrow 82, the breaking process, wherein the breaking both sides of the carriage body 22 lying punch 71, of which in the schematized sectional views according to FIGS. 10 to 13 only one is shown, in the direction of the arrow 86 are pressed against the workpiece 4. The corresponding action on the respective breaking punch 71 is effected by pivoting the handle bar 20 in the direction of rotation 82 corresponding to the arrow formed on the lateral arms 23 actuating cam 85. The end of the extension path of the breaking punch 71 in the direction of arrow 82 against the workpiece 4 corresponds to a further locking position for the handle 20, the in Fig. 13 is illustrated by the dashed line 87, on the part of the working carriage 17, a locking member 83 associated with the receptacle 88 is provided so that the breaking punch 71 are to be fixed in its breaking the workpiece 4 position. In the direction of the locking positions, so the neutral position and the refractive position, are the lateral arms 23 of the handle bar 20 associated locking members 83, in particular from the Fig. 14 and 15 seen, resiliently loaded, so that - when released by the user - automatically locking by engaging in the respective, the working carriage 17 associated receptacle 84 and 88 results, of which the receptacle 84 is formed such that a lock only against a Adjustment in the direction of the initiation of the breaking process, but not in the direction of the action of the cutting wheel 73. The receptacle 86 thus forms only one side of a stop for the locking member 83 by a latching step, which extends on a circumferentially to the thrust washer 92 Guideway is provided. From their respective locking position, the locking members 83 are to be released by the user via a corresponding, preferably the handle bar 20 associated actuating linkage, as well as below with respect to the Fig. 14 and 15 explained with further details.

Fig. 14 shows in a schematic and simplified representation of a working carriage 17 in a U-shaped cross-sectional shape with the carriage cheeks 90 cross slide rail 91. In height of the carriage web 91 and transverse to the carriage cheeks 90 extending the shaft 78 is mounted in particular in the carriage cheeks 90, wherein the ends Grip hanger 23 are rotationally fixed to the shaft 78 and wherein in the area between the carriage cheeks 90, the shaft 78 with the boom 77, optionally with a corresponding cam, is formed, via which the lying between the cheeks 90 cutting wheel 73 of the cutting assembly 70 is to act.

The cheeks 90 of the carriage 17 are in the region of the shaft 78 and coaxial therewith as a circular, relative to the carriage web 71 in the direction of the web 21 of the handle bar 20 projecting thrust washers 92 with peripheral, the receptacles 84 and 88 for the locking members 83 forming depressions and / or paragraphs trained.

The actuation of the locking members 83 via a handle bar 20 associated actuating assembly 93 with an actuating linkage 94, which in two different embodiments in the Fig. 14 and 15 is illustrated. Fig. 14 10 shows an actuating linkage 94 in an embodiment with two link arms 95 (partially covered by a housing 112) extending along the lateral hanger arms 23, which are slidably guided along the hanger arms 23, as illustrated by arrow 96, and towards the carriage body 22 in accordance with the bow arms 23 are connected to each other bent over a web 97, to which the locking members 83 are provided in the overlap region to the provided on the carriage cheeks 90 thrust washers 92. Corresponding to the arrow direction 96 and thus in the longitudinal direction of the hanger arms 23, the link arms 95 are acted upon by springs 98 in the direction of engagement of the locking members 83 on the receptacles 84. Contrary to this Beaufschlagungsrichtung, the link arms 95 can be raised to cancel the respective lock. These are the rod arms adjacent to the web 21 of the handle bar connected via a handle bar 99, so that it is possible in a simple manner, to release the respective locking positions, the locking members 83 to the receptacles 84 out of engagement.

In principle, the same construction of the work carriage 17 with associated handle bar 20 shows Fig. 15 for an actuating linkage 100, in which the hanger arms 23 are designed to be longitudinally slotted in the overlapping area to the link arms 101 running along the same, such that the linkage arms 101, passing through the legs of the hanger arms 23, are pivotable transversely to the direction of extension of the hanger arms 23 via pivot axes 102 are connected. Expiring in the direction of the carriage body 22, the link arms 101, which in Fig. 15 only indicated by dashed lines, provided with locking members 83, which provided for in the thrust washers 92 locking receivers 84, 88, as shown in the Fig. 14 described, spring-loaded in the engaged position to pivot. Between the adjacent to the web 21 of the handle bracket 20 expiring ends 103 of the link arms 101, an actuator assembly 104 is provided for this purpose, which is transverse to the lateral arms 23 of the handle bar 20 adjacent to the strap web 21 and opposite each other laterally cantilevered pushbutton 105 which over against the Handle 20-position-fixed systems supported springs 106 are loaded to their original position. This corresponds to the engagement position of the provided on the link arms 101 locking members 83 in the receptacles 84 and 88. The push buttons 105 are coupled in motion via an intermediate, the handle bar 20 in a manner not shown in detail pivotally supported two-armed clutch lever 107.

Fig. 15 illustrated in addition to the illustration according to Fig. 14 the position of the working carriage 17 to the guide rail 8, which are shown by the guide rail 8 via the spacers 25 and 26 connected L-shaped profiles 24 which extend with their short, parallel to the web 21 legs 108 each against the carriage cheeks 90 and on which the slide stay 91 is slidably supported via indicated sliding bearing 109. The lateral support between the carriage cheeks 90 and the guide rail 8 takes place against the long legs 110 of the L-shaped profiles, which extend to the side facing away from the web 91 side and between which the cutting wheel 73rd is, which is guided by a lever 74 which is pivotable about the web 91 fixed to the rotation axis 75 and is resiliently loaded via the spring 76 in the direction of its raised position from the workpiece. The transverse support of the working carriage 17 against the long legs 108 of the profiles 24 is again preferably slide-mounted on sliding bodies 111 lying between the carriage cheeks 90 and the long legs 110.

Fig. 15 shows in addition to the previous illustrations, the two sides of the work carriage 17 arrangement of the breaking punch 71 with corresponding actuation arrangements. As in Fig. 14 shown for the left-side part of the work carriage 17, the working carriage, as far as the functions allow, provided with a housing 112.

A simplified, separate representation of the work carriage 17 with handle bar 20 and over the handle bar 20 successful operation of the cutting wheel 73 is made Fig. 16 seen. In particular, illustrated Fig. 16 Also, that the cutting wheel 73 is loaded via the spring 76 through the intermediary of the lever 74 to its excavated position, so that with the switch from the cutting position to the neutral position for the cutting wheel 73 a retracted position in the working carriage 17 results only at the changeover from the neutral position of the handle bar 20 is canceled in the cutting position.

Illustrated in a corresponding manner Fig. 17 the adjustment of the breaking punch 71 on the handle bracket 20 upon pivoting of the handle bracket 20 in a direction of rotation 88, in which the provided on the side arms 23 actuating cam 85 move against the brake piston 71 and adjust them in the direction of their working position by applying the lever 113, which are designed as two-armed, about an axis 119 pivotable lever and whose one lever arm 114 carries the respective brake piston 71, while the other, rear lever arm 115 is resiliently acted upon in the opposite direction. This loading can be done, for example, by a purely schematic as a bar connection between a linkage 120 on the lever arm 114 and a linkage 121 on the carriage body 22 indicated tension spring connection 116, or even at a Druckfederabstützung 117, wherein the respective lever arm 115 at least starting from the neutral position to Cutting position via a containing the actuating cam 85 bail arm 23rd Connected cam 118 is acted upon, such that the brake plunger 71 are displaced to its rest position within the working carriage 17, thus thus are held when cutting the workpiece 4 via the cutting wheel 73 in a clearance position to the workpiece 4.

The axis 75 for the cutting wheel 73 bearing two-armed lever 74 according to Fig. 16 and the axis 119, around the two-armed lever 113 carrying the breaking punches 71 (in accordance with FIG Fig. 17 ) are pivotable, both lie relative to the axis 79 of the shaft 78 on the same, the rear part 6 of the body 12 facing side, so that can be realized with a favorable design ratio with a short design of the work carriage 17 and larger lever lengths.

The above-described embodiments of the individual elements of the device 1, in particular the guide and / or the training for the guide rail, the support for the guide rail and / or the lock for the guide rail and the working slide in its different embodiments can be, in particular Fig. 1 illustrates, in combination, as well as in sub-combinations to an advantageous construction of the device according to Fig. 1 but in particular also constitute independent inventions.

Claims (9)

Apparatus for cutting flat workpieces, in particular tiles (5), having a base body (2) which has a contact zone (3) for a workpiece (4) to be cut, and a support zone aligned along the base body (2) ( 3) cross-guide rail (8) which is articulated pivotably at its one end to the base body (2) in the vertical direction, at its other, user-side end of a main body (2) towering guide dome (11) passes through and expiring on her end to the user end provided handle part (10) to the guide dome (11) is to be supported in position-stable at different altitudes. Apparatus according to claim 1, characterized in that the handle part (10) against the user facing the back of the guide dome (11) is fixable adjacent to predetermined heights. Device according to claim 2, characterized in that the guide dome (11) has recesses (54, 55) on its user-side rear side, which is overlapped by the grip part (10), for submerging the grip part (10). Device according to one of the preceding claims, characterized in that the handle part (10) by a on a projection (48) to the guide rail (8) out and axially in the direction of the guide rail (8) resiliently supported rotary push handle is formed. Device according to one of the preceding claims, characterized in that the recesses (54, 55) in the pivoting direction of the guide rail (8) are spaced from each other and over one of the guide rail (8) in the transition to the handle part (10) interspersed guide slot (59). are connected. Device according to claim 4 or 5, characterized in that the handle part (10) designed as a rotary push handle is provided on the guide dome (11) with an annular collar (57) on which in particular axially offset and radially projecting web-like locking tabs (58). are provided, wherein the radius around the locking tabs (58) is smaller in diameter than the diameter of the recesses (54, 55). Apparatus according to claim 6, characterized in that , based on the width of the guide slot (59), the diameter of the annular collar (57) larger and the width of the locking tabs (58) is smaller. Apparatus according to claim 7 or 8, characterized in that two diametrically opposed locking tabs (58) are provided. Device according to one of claims 6 to 8, characterized in that the recesses (54, 55) on the bottom side with nubs (61) are provided, which in one of the displacement position between the recesses (54, 55) twisted into a locking position, as rotation -Schiebegriff trained grip part (10) in overlap to the locking tabs (58) lie.

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