ES2535383T3 - Device for cutting laminated pavement plates - Google Patents

Abstract

Device for cutting a porous plate (1), essentially resistant to bending, in particular laminated pavement plate with a frame (2), a support (3) formed by the frame (2) for the plate (1), a groove immersion (4) associated with the support (3) and with a cutting blade (6) pivotably fixed in the frame (2) around an articulation shaft (A) formed by an articulation bearing (5, 9) , such that its cutting edge (7) is submerged during articulation of the cutting blade (6) from an open position to a closed position inside the immersion groove (4), in which a point of intersection (8), which is in the articulation plane, migrates between the support (3) and the cutting edge (7) during the cutting of the cutting blade (6) from the side of the support (3), which is close to the joint bearing (5, 9), towards the side of the support (3) that is distant from the joint bearing (5, 9), character raised by the fact that the cutting blade (6) has a reduced area (68) in the cross section, which extends between the chest (6 ') and the back (6 ") of the cutting blade (6), and that it extends in the open position of the cutting blade in the area of the support (3) and in particular parallel to it.

Description

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DESCRIPTION

Device for cutting laminated pavement plates

The invention relates to a device for cutting a porous plate, essentially resistant to bending, in particular laminated pavement plate with a frame, a support formed by the frame for the plate, an immersion slot associated with the support and with a blade cutting pivotally fixed in the frame around an articulation axis formed by an articulation bearing, such that its cutting edge is submerged during the articulation of the cutting blade from an open position to a closed position in the inside the immersion groove, in which an intersection point, which is in the articulation plane, migrates between the support and the cutting edge during the cutting of the cutting blade from the side of the support, which is next to the joint bearing, towards the side of the support that is distant from the joint bearing.

A cutting apparatus of this type is known from FR 575749. Also FR 612747 A and FR 847014 A describe cutting devices of this type.

The invention has the task of developing a cutting apparatus of the type indicated at the beginning advantageously for use.

The task is solved by means of the invention indicated in the claims, wherein the dependent claims represent, respectively, advantageous developments.

The invention relates to the configuration of the cutting blade. It is provided that the cutting blade has a reduced area in the cross section, which extends between the chest and the back of the cutting blade, and which extends in the open position of the cutting blade parallel to the support. This area reduced in diameter extends in this way linearly between the cut that forms the chest and the back that moves away from the cut. This reduced area in the cross section has two edges that extend parallel and at an acute angle to each other. In the open position of the cutting blade, the lower edge of the reduced area in the cross section extends under the support. The upper edge of the reduced zone in the cross section extends above the support. The upper edge is spaced sufficiently far from the support, so that it extends above the surface of the plate to be cut. Preferably, the reduced area in the cross-section is formed by two grooves of the groove type, which are machined on the two wide sides opposite each other of the cutting blade. The edges of the reduced area in the cross section are formed in this case by steps or roundings. Also here it can be a flexible transition. These reduced areas in the cross section have proved to be advantageous, when a wide laminated plate must be cut in several successive stages with the rolling blade. After the first stage, the cutting blade is brought to the open position. The cutting section made in this first stage has a width, which is greater than the thickness of the material of the cutting blade in the region of the reduced area in the cross section. In the open position, this reduced area in the cross-section extends directly above the support, so that the laminated plate can move forward almost without friction relatively in front of the cutting blade. Alternatively, the cutting blade can also be moved in the manner already described relatively in front of the frame. In this case, the reduced area in the cross section moves through the partial groove cut in the laminated plate.

If a laminate plate to fragment in stages is broken through incomplete individual stages, then the cutting blade must be pivoted after each individual cut through the newly generated cutting gap backwards. But the edges of the cutting plate adhere in friction joint on the wide lateral surfaces of the cutting blade, so that there is a tendency to raise the plate to be cut during the opening of the cutting blade from the closed position. This elevation considered unfavorable is prevented through the fixing support according to the invention. The latter drives the upper side of the plate in the direction of the support when the cutting blade is pivoted from its closed position to the open position. Preferably, the fixing bracket is configured by a lever arrangement. The lever arrangement may be associated with the cutting blade. To this end, a two-arm activation lever is preferably articulated in the cutting blade. The activation lever has a fixing support, the end of which drives the surface to be cut from above during the opening movement of the cutting blade. This is preferably done with the free end of the fixing support arm. The second arm of the activation lever forms a grip arm, at which end a handle is fixed. With the handle you can articulate the cutting blade around the axis of articulation. The rotating bearing, with which the activation lever is fixed on the cutting blade, can be formed by a screw. In a preferred configuration, the activation lever is configured by two metal plates, preferably steel plates, configured the same. A limit stop is provided, which limits the angle of articulation of the activation lever in front of the cutting blade. To this end, a stopper pin, which connects the two steel plates to each other, can pass through an arc groove of the cutting blade. Moreover, a fixing device is provided, with which the articulation capacity of the activation lever in front of the cutting blade can be blocked. The fixing device is preferably constituted by a rotary knob, which is screwed onto the threaded pivot. In the locked position, the threaded pivot is in an open groove at the edge of the cutting blade. Through the

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Fixing the rotary knob you press the two steel plates that configure the activation lever in front of the wide sides of the cutting blade.

A development of the laminate cutting blade refers to a support stand. The support stand is temporarily fixed with the frame. Fixing can be done through a retaining joint or clip joint. In the support stand it is preferably an arc-shaped piece, which is placed on the frame formed by two hollow bodies. In this case, a head section of the support stand is located above the frame support. Two leg sections form, respectively, a lower marginal edge, with which the support stand can be established on a substrate. A central section extends between the leg section and the head section. The latter has a contour line of cross section, which follows the outer wall of the frame. The height of the support stand corresponds to the height of the frame. The support stand can be placed at a distance from the frame on the substrate. Its head surface is then spaced approximately to the same extent as the frame. The support stand is used to support a plate to be cut.

Preferably, it is provided that the articulation bearing, with which the cutting blade is fixed in the frame, can be moved in the direction of the extension of the immersion slot, that is, in the direction of cutting. As a consequence of this configuration, using a stop, a rolling plate can also be cut, which is wider than the effective cutting length of the cutting blade. The cutting can be carried out in several successive stages, the laminate plate being able to remain in its support position in the stop. The laminate plate does not move in front of the frame, but the cutting blade moves in front of the frame. In a development of the invention, a locking mechanism is provided, which blocks the displacement capacity of the articulation bearing, when the cutting blade has been pivoted around a predetermined articulation angle from the open position in the direction of the position. closed. In the open position, the cutting blade is preferably pivoted about 90 ° in front of the support. In this open position, the articulation bearing can be moved in the direction of the extension of the immersion groove, that is, in the cutting direction. As soon as the cutting blade travels at a certain angular value from this fully open position in the direction of the closed position, that is, with the beginning of the cut, the locking mechanism takes effect. The latter preferably has an eccentric cam. This eccentric cam is fixedly fixed against rotation with the cutting blade. This way it turns when the cutting blade is articulated. The eccentric cam configures a radial projection, which collaborates with a clamp. It moves the clamp against a support flank of the frame, so that the clamp is supported there by friction. In this way a brake force appears, which blocks the displacement capacity of the articulation bearing in front of the frame. The eccentric cam is part of an articulation shaft, with which the cutting blade is housed in bearing supports. The bearing supports preferably form a bearing slide. The latter can be formed by two sliding elements. The bearing slide is linearly guided, preferably with guide ribs. The guide ribs can be projected from two opposite guide walls spaced apart from each other and can have a dovetail contour. These dovetail ribs fit into dovetail grooves of the bearing slide. The two sliding shells can be formed by castings by plastic injection. These can configure a bag, in which there is a clamp.

A development of the invention relates to the configuration of the cutting edge of the cutting blade. The latter has teeth spaced apart from each other, which fit during the closing of the cutting blade successively on the surface of the plate to be cut, such that the plate moves during cutting only in a non-essential measure in the direction cutting As a consequence of such a configuration, the use of a stop can be dispensed with, when an endless cut must be made. The teeth preferably have two flanks that converge at a vertex. The flanks of neighboring teeth are distanced from each other by means of linear sections

or slightly curved from the cutting edge. The flanks, which point with their flank surface towards the axis of rotation have a steeper angle of attack than the flanks that move away with their flank surface from the axis of articulation.

According to a development, teeth are provided in the support area. These teeth are used to fix the workpiece on the support and are able to fit on the rear side of the workpiece, when a pressure is applied to the workpiece from above. For the prevention of a danger of injury in the open position of the cutting blade it is proposed that the teeth change during articulation of the cutting blade from the open position in the direction of the closed position from a hidden position to a position of Advance. In this case, it may be provided that the teeth move during articulation of the cutting blade to the open position to a hidden position. As soon as the cutting blade moves from the open position towards the closed position, the teeth change from the hidden position to the forward position. The teeth are preferably associated with a serrated bar. This serrated bar fits into a housing groove, which extends parallel to the immersion groove. On both sides of the immersion groove can be provided those housing slots, which are equipped, respectively, with a serrated bar. Toothed slats can be raised and lowered. In one development, it is provided that the teeth, which can be configured in the same way by a serrated bar, are fixedly seated in the frame. The teeth extend here in series parallel to the immersion groove. Next to the teeth is a

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ribbon. The surface of the slat that has an essentially rectangular cross-section forms the base for the plate to be cut. In an unloaded state, the imaginary plane, in which the upper side of the bar is located, extends over the tips of the teeth. The upper side of the list can be moved in a downward direction through the application of a pressure. To this end, the strip can be configured of a compressible material, in particular rubbery elastic. The downward movement of the upper side of the slat is carried out, for example, through the support of the plate to be cut or through the application of the cutting force. The upper side migrates in this case down below the tips of the teeth, so that the teeth of the series of teeth can fit into the lower side of the plate. Preferably, a series of teeth and a slat extend respectively on both sides of the immersion slot, so that the two series of teeth extend between the two slats that extend parallel to each other.

A development refers to the configuration of the frame. The latter is preferably formed by one or several hollow bodies. Preferably, the frame has two hollow bodies configured essentially the same, arranged in mirror symmetry with each other. In hollow bodies, it is preferably aluminum extrusion parts. The two front ends of the hollow bodies are preferably connected with front side coverings. These linings on the front sides can also configure the legs of the cutting apparatus. The linings of the front sides retain the two hollow bodies at a distance such that the immersion slot is formed between them. In addition, the two hollow bodies also form the two guide walls spaced apart from each other, mentioned above, on which the bearing slide is guided.

In addition, it is provided that the end of the cutting edge, which is far from the bearing shaft, configures a last tooth. Its tooth flank that moves away from the axis of articulation crosses the support during the closing of the cutting blade essentially at right angles. In this way, this last tooth generates in the section an end flank that extends essentially at right angles to the cutting direction. A bumper is adjacent to this last tooth.

A development refers to the top. This is fixed with a fixing screw above the support, penetrating the fixing screw through the immersion slot by screwing into a fixing slide. The fixing slide rests under the support in the area between the two hollow bodies, which form the frame, in reinforcement ribs. Elements are provided that increase the friction joint, with which the fixing slide rests on the reinforcement ribs. In addition, retaining ribs are distanced from the fixing slide. They engage through the immersion groove and in a stop retention recess, to fix it in a 90 ° position. Several retention recesses can be provided, to also fix the stop in a 45 ° position or, for example, in a 30 ° or 60 ° position.

Examples of embodiment of the invention are explained below with the help of the attached drawings. In this case:

Figure 1 shows a perspective representation of a laminate cutting blade in a fully open position.

Figure 2 shows a representation according to Figure 1, but with cutting blade 6 displaced along the cutting direction.

Figure 3 shows a top plan view of the cutting blade.

Figure 4 shows a side view.

Figure 5 shows a front view.

Figure 6 shows a bottom view.

Figure 7 shows a section according to line VII-VII in Figure 3.

Figure 8 shows a section according to line VIII-VIII in figure 3.

Figure 9 shows a representation according to Figure 7, but with a semi closed blade.

Figure 10 shows a representation according to Figure 8, but with a semi closed blade.

Figure 11 shows a representation according to Figure 7 with closed blade.

Figure 12 shows a representation according to figure 10, but with a closed blade.

Figure 13 shows a section according to line XIII -XIII in figure 3.

Figure 14 shows a section according to line XIV-XIV in figure 3.

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Figure 15 shows a representation according to figure 1, but with an open drawer.

Figure 16 shows an exploded orderly representation of the locking mechanism.

Figure 17 shows an exploded orderly representation of the stop arrangement and a reinforcement arrangement.

Figure 18 shows a perspective representation of the lower side of the angular stop 22.

Figure 19 shows an enlarged fragment XIX of Figure 8.

Figure 20 shows a representation according to Figure 19, but with the plate 1 placed on top.

Figure 21 shows a perspective representation of another embodiment with a semi-open cutting blade.

Figure 22 shows a representation according to Figure 21, in which one of the two steel plates that configure an activation lever has been omitted.

Figure 23 shows another perspective representation of the embodiment according to Figure 21 with open drawer.

Figure 24 shows a perspective representation of the exemplary embodiment with open drawer in bottom view.

Figure 25 shows a side view on the laminate cutting blade with cutting blade fully pivoted to the open position.

Figure 26 shows a section according to line XXVI-XXVI in figure 25.

Figure 27 shows a laminate cutting blade in the closed position with support stand 71 elastically fitted on the frame 2.

Figure 28 shows a perspective representation of the laminate cutting blade according to Figure 27 with end cap removed, and

Figure 29 shows the laminate cutting blade according to Figure 27 with the support stand 71 in functional position.

The frame 2 of the laminate cutting blade is configured by two hollow bodies essentially arranged in mirror symmetry, which are manufactured in the aluminum extrusion process. The two hollow bodies respectively have a bottom wall 46, an outer wall 43, an inner wall 44 that extends parallel to the outer wall and a guide wall 45 that extends between the outer wall 43 and the inner wall 44 While the guide wall 45 extends essentially in the vertical direction, the bottom wall 46 extends essentially in the horizontal direction.

The two halves of the housing are distanced from each other. The distance of the two halves of the housing defines a groove 4. The groove extends between two appendixes of rib 55, which respectively constitute a supporting flank 18. At the two ends of the support flanks 18, which are aligned with each other, there are reinforcement ribs 19, which configures an open upward bag.

The ribbing appendages 55 form upwards a support 3 for a rolling plate 1. In the two bags that extend parallel to the immersion groove 4 there are, respectively, serrated slats

20. A mechanism not shown may be provided to move these serrated beams 20 in the vertical direction.

In the exemplary embodiments shown in the drawings, the toothed slats 20 fit, however, fixedly in the grooves 50. In addition to the two serrated strips 20, which extend on each side of the groove 4, in the cavities 56 or appendices. of ribs 55 fit foam rubber slats 53. The surfaces pointing upwards of the foam rubber slats 53 are in a common plane E, which extends above the tips 52 of the teeth 51 of the toothed slat 20. The slats 53 can be compressed. This is done through a vertical pressure from above. In the unloaded state, the plane E of the upper sides of the slats 53 extends over the tips of the teeth 52, so that a danger of injury is minimized. If a rolling plate 1 is placed - as shown in Figure 2 - on the upper side of the slats 53 and a vertical pressure is exerted on the latter, then the upper side of the slats 53 is displaced as a result of a compression of the latter down. The tips 52 of the teeth 51 can fit in this case on the lower side of the plate 1 to be cut.

If a cutting blade 6 articulated in the frame 2 is found in the fully open position shown in

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Figure 1, the teeth of the toothed slat 20 are placed in a hidden position. They are in a countersunk position with respect to the side of the slats 53 forming the support 3. If the cutting blade 6 is moved from the open position shown in Figure 1 clockwise in the direction of the closed position, so that the point of intersection 8 between the cutting edge 7 and the support 3 moves in the direction of a stop 22, the toothed slats 20 leave the countersunk position. In this way, they can fit on the bottom side of the laminate plate, to fix it.

The two halves of the housing are fixed to each other by means of coverings of the front sides 40, which may be constituted of plastic. These front side coverings also form support legs, with which the frame 2 can be placed on a smooth substrate. In this case they are projected onto the bottom wall 46. In the corner area between the bottom wall 46 and the inner wall 44 is a guide groove 47. The two guide grooves 47 opposite each other from the two halves of the housing they configure a guide for a drawer 39 configured as a plate. With this drawer 39, the intermediate space between the two halves of the housing can be closed. This intermediate space configures a chip collection chamber. A bottom plate of the drawer 39 sits on an end plate 42, which is, when the drawer is closed, in a recess 41 of the lining of the front sides. These two drawers 39 are provided, which can be inserted from opposite ends of each other.

The cutting blade 6 has a bearing hole at its bearing end and a handle at its other end. A marginal edge of the cutting blade 6, which is connected directly to the bearing end, configures a cutting edge 7. The opposite marginal edge forms the back of the cutting blade 6 and extends essentially in a straight line. The cutting edge 7 extends in an arc so that during the closing of the cutting blade 6 the point of intersection 8 between the support 3 and the cutting edge 7 moves out of the articulation bearing of the cutting blade. cutting 6. The cutting edge 7 which extends in an arc shape has a plurality of teeth 17 spaced apart from each other. The skin 17 "of the teeth 17, which point towards the articulation bearing shaft 5, have a steeper angle towards the contour line of the cutting edge 7 than the flanks of the teeth 17 'which move away from the bearing of joint. As a consequence of this configuration, the teeth 17 fit during the closing of the cutting blade 6 successively on the surface of the laminate plate 1, to thereby reduce a slip of the laminate plate 1 during cutting.

With the laminate cutting blade, rolling plates can be cut, which are wider than the length of the cutting edge 7. A rolling plate 1 of this type is placed with a marginal edge against a support flank of the angular stop 22 , so that the angular stop 22 has a greater distance with respect to the articulation bearing 5 than the length of the cutting edge 7. In a first stage, starting from the position of the cutting blade 6 represented in Figure 1, generates a first partial cut. The cutting blade 6 is there at the maximum distance from the angular stop 22. The cutting blade 6 can be moved in the fully open position, shown in Figure 1, in the direction of the angular stop 22. To this end, the user can intervene in a handle 21 placed on the back of the cutting blade 6.

The next cut can then be made from the operating position shown in Figure 2, in which the cutting blade 6 is housed near the stop 22.

To enable the operation mode described so far, the articulation bearing shaft 5 is placed from a bearing slide 9, which can be moved along the guide walls 45 in the cutting direction. The articulation bearing shaft 5 is constituted by two bearing halves, which are connected to each other with a connecting screw 13 that passes through the bearing eye of the cutting blade 6. The two end sections, which axially move away from one of the other, of the axis of the articulation bearing 5, forms eccentric sections 12. A first section 12 'is constituted by a tangential surface. A circular cylindrical wrapping surface 12 "is connected to this secant surface 12’. The circular cylindrical wrapping surface 12 "is placed in a bearing hole 14 of a sliding shell 9 of the bearing slide. Eccentric section 12 also has a 12 ’’ cap.

The sliding shells 9 house, respectively, one of the two eccentric sections 12 that move away from each other and then form the bearing hole 14, respectively, bags 10, in which a ribbon is inserted in each case of fastening 11. The sliding shells 9 further form a pair of dovetail grooves 16, in which dovetail ribs 15 fit. Dovetail ribs 15 extend over the outer sides of the walls of guide 45, whereby they are directed towards each other and extend parallel to the immersion groove 4. The fastening strips 11 rest on one side in the eccentric section 12 of the articulation bearing shaft 5. On the other On the other hand, the support slats 11 rest on the support flanks 18.

In the open position shown in Figure 7 of the cutting blade 6, the flank 12, which extends over a secant, of the eccentric section 12 is in the plane of the bottom of the bag 10, so that the slat clamping 11 is not pressed against the support flank 18.

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In this operating state, the stop 12 '' 'is in a counter stop of the sliding shell 9. The bearing slide 9 can thus be moved in the direction of extension of the immersion slot 4. In this case, it slides along the dovetail ribs 15.

If the cutting blade 6 is pivoted in the direction of its closed position, then the clamping strip 11 is driven from the circumferential section 12 ’. The retaining strip 11 then presses against the support flank 18, so that the sliding capacity of the bearing slide 19 is locked in friction joint.

The angular stop 22 rests on the support 3 and has a hole 30, through which a screw 23. is inserted. The hole 30 is closed with a plug 31, which covers the head of the screw 23. The threaded case of the screw 23 is screwed into a threaded hole 27 of a fixing slide 24. The fixing slide 24 is in the intermediate space between the two guide walls 45. It has two retaining ribs 28 that penetrate the immersion slot 4 and which they can extend up to the support 3. The fixing slide 24 also has two grooves 26 that extend parallel to each other, into which threaded pins 25 penetrate as elements that increase the friction joint. During fastening of the screw 23, the enclosing walls are pressed, that is, the threaded passages of the rib bodies 25 against the reinforcement ribs 19. This results in a friction joint lock of the angular stop 22 against displacement.

If very wide plates must be cut, that is, those whose width exceeds the length of the frame 2, the angular stop 22 can be removed through the loosening of the screw 23. For the captive fixing support of the fixing slide 24 in the space from the distance between the two guide walls 45, from the lower side of the fixing slide 24, respectively, fastening tabs 29 are detached, which can be supported on the dovetail ribs 15.

In an angular position of 90 ° or 45 ° of the angular stop 22, a retention rib 28 fits into a retention niche 34 of the angular stop 22. For the displacement of the angular stop 22 in another angular position, the screw 23 is loosened.

The device has optimal reinforcement means. These consist of two steel rails 36 that extend parallel to each other, which are arranged below the bearing surface 18 and that limit the travel path of the bearing slide 9. The reinforcement rails 36 are fixed with several easels for fixing 37 in the intermediate space between the guide walls 45. For fixing the dovetail ribs 15 are used. For stabilization, two reinforcing rails 36 arranged on different sides of the immersion groove 4 are joined together by reinforcement rib means 38. The reinforcement ribs 38 connect, respectively, two retention stands 37 to each other.

The last tooth 48 already mentioned above forms the end of the end side of the cutting edge of the cutting edge 7. Adjacent to this last tooth 48 is a stop buffer 49, which is located at the grip end of the cutting blade 6.

The embodiment shown in FIGS. 21 and 22 corresponds essentially to the embodiment described above, however, a tread 57 is provided here, however, in this end embodiment. The configuration of the cutting blade is essential 6. While in the example of embodiment described above the handle sits on an arm of the cutting blade, which is integrally formed integrally of the material with the blade itself, in this example of embodiment the handle arm is configured 39 by one arm of a two-arm activation lever 58. The handle 62 is placed at the end of the handle arm 59. It consists of two handle shells.

The activation lever 58 is constituted by two essentially identical shaped steel plates, which receive each other the cutting blade 6 which is constituted of steel. The two steel plates that make up the activation lever 58 are joined together with an articulation axis 61. The articulation axis 61 passes through an articulation hole of the cutting blade 6. Around this articulation axis 61 it is possible to pivot. the activation lever 58 relatively in front of the cutting blade 6. For limiting the articulation angle of the activation lever 58 in front of the cutting blade 6, stop means are provided. These consist of a stopper pin 65, which crosses an arc groove 66 of the cutting blade 6. The two ends of the arc groove 66 delimit the articulation angle of the activation lever 58.

The second arm 60 of the activation lever 58 extends approximately at an angle of 180 ° with respect to the first arm 59. Both arms 60, 59 are approximately the same length. The free end 60 ’of the second arm 60 is able to perform a retention function for a plate 1 to be cut. Correspondingly, the second arm of the activation lever 58 configures a retention arm 60. The articulation angle of the activation lever 58 and the length of the retention arm 60 are adjusted on the position of the rotation axis 61, of such that during opening of the cutting blade 6 from a closed position in the direction of an open position, the end 60 'drives the support 3, but at least the upper side of a laminate plate 1 to be cut down. The opening of the cutting blade 6 is therefore connected not only with a joint of the cutting blade 6, but also with a relative joint movement of the lever

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activation 58 frees the cutting blade 6, so that the free end 60 'of the retention arm 60 is distanced from the axis of rotation A of the cutting shower 6 and slides along the upper side of the plate laminate 1 cut and in this case exerts a force on the laminate plate 1, which is directed on the support 3.

A fixing installation 63 is provided, which is constituted by a threaded pin and by a rotating knob 63 screwed on it. The cutting blade 6 has a groove 64 open at the edge, into which the threaded rod can enter. If the rotary knob 63 is pressed in this position, then the articulation capacity of the activation lever 58 is blocked, since the cutting blade 6 is interlocked between the two steel plates of the activation lever 58.

The operating mode of the fixing bracket is as follows. If a multiple cut is required to cut a wide laminate plate 1. Then the cutting shower 1 must be pivoted after each return cut up through the cutting gap in the rolling plate 1. Since the interstitium walls cutting adheres in friction joint on the wide lateral surface of the cutting blade 6, there is a tendency to raise the laminate plate 1 during the opening of the cutting blade 6. When the fixing installation 63 is loosened, exerts, however, during the lifting of the handle arm 59 a torsional moment on the activation lever 58, since it is pivotable with easy travel around the axis of rotation 61. The fixing arm 60 tilts down until its end 60 'comes into contact with the upper side of the laminate plate 1. The end 60' then rests on the upper side of the laminate plate 1 and forms a turning point, around from which the activation lever rotates when the handle 62 is stretched further up. The cutting blade 6 is then extracted out of the cut groove, exerting at the same time on the ends 60 ’a retention force on the laminate plate 1.

For the next cut, either the cutting blade 6 is moved in the direction of the angular stop 22 or the laminate plate 1 to be cut in the direction of the cutting blade 6 is moved. If the handle 62 is then loaded again in downward direction, then first the activation lever 58 pivots to its stop position. In which either the stop pin 65 stops at the upper end of the arc groove 66 or the threaded rod stops at the bottom of the groove 64 open at the edge. If this articulated end position has been reached, it can be applied through the handle arm 59 and its coupling then rigid with the cutting blade 5 a torsional moment on the cutting blade 6, so that the next cut can be made .

Also in this embodiment, under the immersion slot 4 is a removable plate, which forms a drawer 39 for receiving chips. In this exemplary embodiment, however, the plate is not divided into two parts. A single plate is provided that extends over the entire length of the frame 2.

The two front side coverings 40, which close, respectively, the two hollow profiles of the frame 2, which extend parallel to each other, form end caps, which form a support surface 78 with its lower side, with which it can be supported. The cutting blade of laminate on a substrate. Flaps 40 are projected from both end caps 40, which are provided, respectively, with a fixing hole 67. In these fixing holes 67, fixing screws can be screwed, to permanently fix the frame on a plate of job.

The embodiment shown in Figures 21 to 29 has only one drawer 39, with which the hollow space configured below the immersion slot 4 is closed. Also in this exemplary embodiment, the drawer 39 consists essentially of a strip sheet metal, which has at its end an end plate 42. The end handle 42 configures a handle, with which the drawer 39 can be inserted and removed in a guide.

The cutting edge 7 of the cutting blade 6 also configures a fine teeth in this embodiment. In this case these are diets with a height of the teeth of approximately 1.5 mm and a division of 3 mm. This teeth forms the chest 6 of the cutting blade. The chest 6 extends over a contour line, which is configured in the form of an arc. The marginal edge of the cutting blade, which is opposite the chest 6, forms its back 6 ’. The latter extends essentially linear and carries a plastic handle 21.

Between the plastic handle 21 and the axis of the articulation bearing 5 there is a reduced area in the cross section. This reduced area in the cross-section is formed by two wide side recesses 68. In this case it is recesses 68 of the slot type. The two grooves 68, which have only a depth of a few tenths of a millimeter, extend parallel to each other and are associated with the wide sides of the cutting blade 6 that move away from each other. The two grooves 68 have a lower step 70 and an upper step 69, which extend, respectively, parallel to each other. In the fully open position of the cutting blade 5, shown in figures 25 and 26, the steps 69, 70 parallel to the support 3 extend. While in this open position the groove extends horizontally, the back 6 ' 'of the cutting blade 6 extends in the vertical direction. The lower step 70 of the cavity 68 is located under the support 3. The upper step 69 of the cavity 68 is located above the support 3. The distance of the upper step 69 with respect to the support 3 is greater than the thickness of the material The plate to be cut.

The function of the bilateral cavity 68 or of the reduced area in the cross section achieved in this way

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E13158871

04-21-2015

It is explained below. If a porous plate, for example laminate plate, whose width is greater than the length of the cutting edge 7 of the cutting blade 6, must be cut, then the plate must be cut in several successive cuts. First, a first cut is made, which only extends over a part of the width of the laminate plate. This is done through articulation of the cutting blade 6 from an open position to a closed position. Then the cutting blade must be pivoted again out of the partial section. This is done with the help of the fixing support 60 already described above and its functional surface of the fixing support 60 ’. The cutting blade 6 is pivoted in the fully open position shown in Figures 26 and 26. During the opening of the cutting blade 6, in this case the stopper pin 65 stops at one end of the arc groove 66, as shown in Figure 25. In the fully open position, in which the back 6 '' of the cutting blade 6 extends approximately in the vertical direction, the reduced zone 68 in the cross-section extends directly above the support 3. The workpiece on the support can now be moved further or the cutting blade 6 can be moved in the direction of the stop 22. In this case, a relative displacement of the cutting blade 6 and the laminated plate 1. This displacement is, therefore, of light march, since only the reduced zone 68 in the cross section moves through the groove of the laminated plate 1. The bottom of the cavities 68 has a distance a reduced with respect to the walls of the interstitium cut in the laminated plate 1, so that a reduction of sliding friction takes place.

Figures 27 and 28 show a support stand 71 elastically coupled on the frame. This support stand is constituted by a molded part configured in a U or V shape, whose contour of the inner cross section corresponds approximately to the outline of the outer cross section of the frame

2.

The support stand 71 has a head section 75, which rests on the support 3. In the center, the head section 75 has a pattern 76, which penetrates the immersion slot 4. On both sides of the head section 75, central sections 74 are projected, which follow the outer wall 72 of the two hollow bodies, which make up the frame 2. A leg section 73 is connected respectively in the two central sections 74. The leg sections 73 extend essentially in the vertical direction and parallel to each other. These form a lower marginal edge 73, which is distanced from the head section 75 and the height of the support

3.

In the transition zone between the central section 74 and the head section 75, the support stand 71 has retaining lips 77 projecting inwardly, which retain the hollow bodies that form the frame 2 as a retainer. These retention lips 77 make it possible to temporarily fix the support stand 71 in the frame 2.

The laminate cutting blade can be used with a support stand 71 elastically fitted on the frame 2. The support stand 71 is not, in effect, in the intersection zone of the cutting blade 6.

The support stand 71 can be removed outside the frame 2 to serve as a support for the laminate plate 1, as shown in Figure 29. Since the distance between the support surface 78 and the support 3 and the marginal edge 73 ' and the head section 75 is the same, the laminated plate 1 extends parallel to the support surface of the frame 2 and the support stand 71.

Claims (15)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 1.-Device for cutting a porous plate (1), essentially resistant to bending, in particular laminated pavement plate with a frame (2), a support (3) formed by the frame (2) for the plate (1) , an immersion groove (4) associated with the support (3) and with a cutting blade (6) pivotally fixed in the frame (2) around an articulation shaft (A) formed by an articulation bearing (5) , 9), in such a way that its cutting edge (7) is submerged during articulation of the cutting blade (6) from an open position to a closed position inside the immersion groove (4), in the that an intersection point (8), which is in the articulation plane, migrates between the support (3) and the cutting edge (7) during the cutting of the cutting blade (6) from the side of the support ( 3), which is close to the joint bearing (5, 9), towards the side of the support (3) that is distant from the joint bearing (5, 9), face cterized by the fact that the cutting blade (6) has a reduced area (68) in the cross section, which extends between the chest (6 ') and the back (6 ") of the cutting blade (6), and that it extends in the open position of the cutting blade in the area of the support (3) and in particular parallel to it. 2. Device according to claim 1, characterized in that an edge (70), close to the articulation bearing (5, 9), of the area (68) reduced in the cross-section is in the open position of the cutting blade (6) under the support (3) and has an edge (69) distant from the joint bearing (5, 9) of the reduced area (68) in the cross section in the open position of the cutting blade ( 6) above the stand (3) extending at a distance from the support (3), which is greater than the thickness of the plate material (1) to be cut. 3. Device according to one of the preceding claims, characterized in that the reduced area in the cross-section is formed by two cavities (68), flanked by steps (69, 70) that are distanced from each other, from the two wide sides of the cutting blade (6). Device according to one of the preceding claims, characterized by a fixing support (60), which during articulation of the cutting blade (6) from the closed position in the direction of the open position drives the plate ( 1) towards the support (3). 5. Device according to claim 4, characterized in that the fixing support is configured by a fixing support arm (60) of an activation lever (58) articulated to the cutting blade (6) rotatably around a rotation axis (61), whose other arm configures a grip arm (59), in which the axis of rotation (61) is specially provided in the area of the cut end (6 ’) distanced from the articulation axis (A). 6. Device according to claim 5, characterized in that the activation lever (58) has at its end the handle (62) for the manual articulation of the cutting blade (6). Device according to one of the preceding claims 5 or 6, characterized in that the activation lever (58) is articulated limited by a stop in the cutting blade (6), in which a pin (65) fits into an arc groove (66). Device according to one of the preceding claims 4 to 7, characterized in that during the opening of the cutting blade (6) from the closed position, one end (60 ') of the fixing support arm (60) drive the plate (1). 9. Device according to one of the preceding claims, characterized by a support stand (71), which can be temporarily fixed in the frame (2) with a leg section (73) and a head section (75) , in which the support stand (71) is retained with a retainer connection (77) in the frame (2). 10. Device according to claim 9, characterized in that the support stand (71) has two middle sections (74) projecting from the head section (75), which are supported in the state temporarily connected to the frame (2) on the side wall (72) of the frame (2). 11. Device according to claim 9 or 10, characterized in that the support stand (71) supports the frame (2) with retaining ribs (77) projecting inwards. 12. Device according to one of the preceding claims, characterized in that the articulation bearing (5, 9) is movable in the direction of the extension of the immersion groove (4). 13. Device according to one of the preceding claims, characterized by a cutting edge (8) equipped with teeth (17), whose teeth (17) fit together during the closing of the cutting blade (6) successively in the surface of the plate (1), such that the plate moves during cutting only in a non-essential measure in the direction of migration of the intersection point (8). 14. Device according to one of the preceding claims, characterized by teeth (51) associated with the 10 support (3), which during the articulation of the cutting blade (6) changes from the open position in the direction of the closed position from a hidden position to an advanced position. 15. Device according to one of the preceding claims, characterized in that the frame (2) is configured by one or more hollow bodies with walls (43, 44, 45, 46). eleven