ITMO20130017A1 - PERFECT MACHINE FOR CUTTING FLOORS. - Google Patents

Description

â € œMACHINE PERFECTED FOR CUTTING FLOORINGâ €.

DESCRIPTION

The present invention relates to an improved machine for cutting flooring.

In the field of construction, it is known to create flooring both for interiors and exteriors in construction materials such as concrete or cementitious or bituminous conglomerates.

For the laying of cables, conduits or other system components, as well as for the creation of joints or the opening of compartments, these floors, once hardened, are cut with machines equipped with suitable diamond cutting discs.

These machines essentially consist of a frame on wheels intended to be placed on the pavement to be cut for the movement of the machine itself along a cutting direction, which rotates a cutting disk lying on a vertical plane parallel to the cutting direction. itself and rotated by a generally electric motor.

This motor is usually arranged with the relative motor shaft coaxial to the rotation axis of the disk and is directly coupled to the latter.

The advancement of the machine on the pavement can be manual, or pushed by an operator, or autonomous if the machine is equipped with its own motor.

In order to contain the dispersion of the dust formed during cutting, to allow the execution of these processes without risks to the health of the workers and without the risk of contamination and damage to the surrounding environments, various solutions have been developed.

A first type of machine developed in this sense provides a system for spraying the cutting area with water or other liquid substance.

This solution, while obtaining a substantial elimination of the dispersion of dust in the surrounding environment, involves the formation of sludge and the need to clean the work area after cutting, as well as to wait for a drying time to continue with the work. or in the use of the work area itself.

Furthermore, the need to provide a liquid tank and a pumping apparatus of the same on board the machine entails a substantial heavier than the same, which is consequently less manageable and comfortable in use for the operators in charge, as well as more noisy and subject to greater vibrations.

Alternatively, a type of dry cutting machine is also known, which provides a sort of hood covering that covers the upper portion of the cutting disc, leaving the lower arc uncovered, and which is coupled to a suction system that removes dust from the cutting area.

However, the direction of rotation of the diamond blade, usually discordant in correspondence of the cutting area with respect to the direction of advancement of the machine along the working direction, tends to move the powder towards the rear area of the machine, pushing it along the cut just made and away from the suction area.

Even this type of machine, therefore, is not free from drawbacks including the fact that it does not allow complete removal of the dust formed during cutting, which tends to disperse into the surrounding environment through the cut performed, entailing risks both for the employees, as well as for the environment itself and what is present in it, and requiring the execution of in-depth cleaning following the processing.

Furthermore, all the types of machines described above have a lateral dimension, ie transversal to the cutting direction, which is not negligible due to the coaxial positioning of the motor with respect to the rotation axis of the diamond disc.

The aim of the present invention is to eliminate the aforementioned drawbacks of the known art by devising an improved machine for cutting flooring which allows to eliminate the dispersion of the dust formed during the execution of the workings, while operating dry.

Within the scope of this technical task, another object of the present invention is to optimize the working conditions for the operators assigned both to cutting and to other processes in proximity to the cutting area.

A further object of the present invention is to avoid any contamination and soiling of the environment surrounding the cutting area and of any systems and equipment present therein.

Not least object of the present invention is to have reduced lateral dimensions and contained weight, so as to be easy to handle for users, not very noisy and subject to limited vibrations.

Another object of the present invention is to present a structure that is simple, relatively easy to implement in practice, safe in use and effective in operation, as well as having a relatively low cost.

This task and these purposes are all achieved by the present improved machine for cutting flooring comprising a frame having at least one surface for resting on a flooring and able to be moved thereon along a cutting direction, at least one cutting disc lying on a plane substantially parallel to the cutting direction and supported rotatable about an axis of rotation orthogonal to the plane itself by said frame, motor means for driving said cutting disk in rotation around the rotation axis, at least one hood cover associable with suction means and associated with said frame, in which said at least one cutting disk is at least partially housed, characterized by the fact that said motor means are adapted to activate the rotation of said at least one cutting disk in the same direction, in correspondence with the cutting area, to the direction of advancement of the machine itself along the cutting direction.

Further characteristics and advantages of the present invention will become more evident from the detailed description of a preferred but not exclusive embodiment of an improved machine for cutting flooring, illustrated by way of example, but not of limitation, in the accompanying drawings in which:

Figure 1 is a schematic plan view of an improved machine for cutting flooring according to the invention;

figure 2 is a schematic side view from the right of the machine of figure 1;

figure 3 is a schematic side view from the left of the machine of figure 1

figure 4 is a schematic rear front elevation view of the machine of figure 1;

figure 5 is a schematic front elevation and partially sectioned view of the machine of figure 1;

figure 6 is an enlarged scale view of a portion of the machine of figure 1.

With particular reference to these figures, the reference numeral 1 generally indicates an improved machine for cutting flooring, particularly in materials such as cement or cementitious or bituminous conglomerates.

The machine 1 comprises a frame 2 having at least one resting surface on a pavement P to be cut and adapted to be moved on the pavement itself along a cutting direction T.

Frame 2 is essentially made up of two vertical sides 3, interconnected by horizontal stiffening elements 4.

In the embodiment shown, the support surface of the frame 2 to the flooring P is defined by four idle wheels 5 placed externally to the sides 3 and to two, two coaxial and hinged on a respective shaft 6 inserted through the sides themselves.

However, it is not excluded that the machine 1 may be equipped with a motorization system precisely to facilitate its handling by the operator.

The frame 2 also provides means for guiding the machine 1 by the operator which consist of a pair of handlebars 7 made integral with each other by an interposed crosspiece 8 and are equipped with respective handles 9 at the upper ends. Each handlebar 7 is articulated to a respective side 3 around a horizontal joint 10 and orthogonal to the cutting direction T passing near the opposite end to the relative handle 9, so as to be able to vary its angular position.

In particular, the handlebars 7 are arranged externally to the sides 3, so that they can also be folded over them to reduce the overall dimensions of the machine 1, for example, during transport (see dotted position in figure 2).

Furthermore, a locking system is provided for the handlebars 7 in one or more operating configurations which provides for each handlebar 7, at the end close to the joint 10, a spring locking element 11 which can be engaged in a series of holes 25 obtained on the corresponding side 3 and manually removable and repositionable.

Finally, the frame 2 provides in the front part a guide rod 12, hinged to a side 3 and positioned by the operator to help guide the machine 1 along a trace of the cut to be performed marked on the flooring P. The machine 1 comprises moreover, at least one cutting disc 13 lying on a plane substantially parallel to the cutting direction T and supported rotatable about an axis of rotation R orthogonal to the plane itself by the frame 2.

The disc 13 naturally has variable technical characteristics according to the type of material of which the flooring P to be cut is made.

In particular, the disc 13 is positioned externally to one of the sides 3 which supports it in rotation around the rotation axis R.

The machine 1 provides motor means 14 for activating the disc 13 in rotation which are supported by the frame 2. More in detail, these motor means provide a motor 15, preferably of the electric type, supported between the sides 3 with its own motor shaft, not visible in the figures, arranged non-coaxial with the rotation axis R and a conventional angular transmission unit 16 with gears interposed between them.

In the preferred embodiment, the motor 15 is positioned with its motor shaft lying on a plane orthogonal to the rotation axis R.

This configuration allows to contain the lateral dimensions of the machine 1.

In the rear part of the machine 1 there is a socket 17 for connection to an electrical power source for the motor 15 and the presence on board the machine 1 of a power supply battery for the motor itself is not excluded.

The machine 1 also provides a hood cover 18, which can be associated with suction means and connected to the frame 2, in which the disc 13 is at least partially housed.

The hood cover 18 consists of a shaped shell applied to the external face of the side 3 which supports the disc 13 and presents in the front part, with respect to the direction of advancement (indicated by the arrow A) of the machine 1 along the cutting direction T , at least one mouth 19 which can be associated with suction means, not shown, which can be supplied with the machine itself or be independent.

The hood-like roof 18 has an opening at the bottom for the protrusion of the disc 13 which is delimited by an edge substantially coplanar or slightly raised with respect to the support surface of the frame 2 to the flooring P defined by the wheels 5.

This edge preferably extends along a closed perimeter to delimit the disk 13 in plan and can be associated with deformable sealing means 20, adapted to tangle the pavement P so as to prevent dispersion of dust.

The sealing means 20 can be constituted, for example, by a profile provided with flexible bristles or made of rubber.

Advantageously, the motor means 14 are adapted to activate the rotation of the disc 13 in the same direction (indicated by the arrow S), in correspondence with the cutting area, to the direction of advancement (indicated by the arrow A) of the machine 1 along the cutting direction. T. or clockwise with respect to figure 2.

In this way, due to the rotation of the disc 13, the dust formed in the cutting area tends to be dragged directly towards the mouth 19, significantly reducing, if not canceling, its dispersion in the surrounding environment.

The particular conformation of the hood cover 18 and the presence of the sealing means 20 help to contain the dust and to convey it towards the mouth 19.

Furthermore, the machine 1 provides for the possibility of making cuts with different depths.

In this sense, the machine 1 is equipped with a support structure 21 for the disc 13 and the motor means 14, which is associated with the frame 2 in an oscillatable way around a pin 22 substantially parallel to the rotation axis R between two configurations extremes defining, respectively, a minimum and a maximum depth of cut obtainable. Reversible means 23 are also provided for locking the positioning of the support structure 21 with respect to the frame 2 in any working position included between the aforesaid extreme configurations to define different obtainable cutting depths.

Figure 6 shows in a continuous line the disc 13 and the motor means 14 positioned at the maximum cutting depth and in a broken line the same elements at the minimum cutting depth, which in this case is null as the disc 13 is raised from the pavement P to allow free movement of the machine 1.

In more detail, the support structure 21 comprises a framework interposed between the sides 3 to which the motor 15 and the angular transmission unit 16 are connected and which rotatably supports the disc 13.

The side 3 associated with the hood-like covering element 18 is equipped with a first slot 24 shaped like an arc of a circle centered in correspondence with the pin 22 to allow the oscillation of the support structure 21. The hood-like covering 18, in fact, It is integral with the side 3 and is shaped so as to allow the movement of the disc 13 between the two extreme configurations.

In the embodiment shown, the reversible locking means 23 are of the manual type and comprise a worm screw 26 lying on a plane orthogonal to the axis of rotation and coupled to a lead screw element 27 integral with the support structure 21. Furthermore, A support 28 is provided for the worm screw 26, which prevents it from sliding in an axial direction and allows it to rotate around the longitudinal axis, connected to the side 3 opposite to that associated with the hood cover 18 in a freely rotatable way with respect to an axis parallel to the rotation axis R, so as to allow the screw itself to follow the oscillation of the support structure 21 around the pin 22.

Finally, the worm screw 26 is connected to an operating crank 29 which rotates around its longitudinal axis, which is positioned above the sides 3 and is accessible to the operator to adjust the depth of cut.

The side 3 opposite to that associated with the hood 18 is, in turn, equipped with a second slot 30, shaped according to an arc of a circle centered at the pin 22, from which an indicator element 31 protrudes outwards. integral with the support structure 21 and movable along a graduated scale 32 shown on the external face of the side itself, which allows to visualize the depth of cut corresponding to the current position of the support structure 21.

According to this embodiment, the reversible locking means 23 allow to continuously vary the angular positioning of the support structure 21 and, consequently, the achievable cutting depth. However, different embodiments are not excluded which allow, for example, discrete variations in the achievable cutting depth or which provide for automatic drives.

Furthermore, it is possible to provide further embodiments of the machine according to the invention in which several cutting discs are provided arranged on a single side of the frame, or on both sides, being equipped with respective hood covers of the type described above for each side. . The operation of the present invention is completely similar to that of known cutting machines, with the peculiarity that the direction of rotation of the disk 13 favors the dragging of the dust formed from the cutting area towards the suction mouth and the particular conformation of the hood cover helps to minimize, if not eliminate, the dispersion of dust into the surrounding environment.

In practice, it has been found that the described invention achieves the intended aim and objects and in particular it is emphasized that while allowing the machine according to the invention to operate dry, it allows to perform cutting of flooring without dispersing the dust formed in the surrounding environment. , therefore without inconvenience for the operators, nor for the other people present, and without the risk of dirtying or damaging the environment itself or the installation in it.

For the same reasons, the environments in which these processes are carried out are immediately usable after the cut has been made, without the need for further cleaning or other interventions.

Last but not least, the machine according to the invention is compact, easy to handle, little noisy and subject to limited vibrations.

The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept.

Furthermore, all the details can be replaced by other technically equivalent elements.

In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to requirements without thereby abandoning the scope of the protection of the following claims.

Claims (9)

CLAIMS 1) Machine (1) improved for cutting pavements comprising a frame (2) having at least one support surface (5) to a floor (P) and able to be moved on it along a cutting direction (T), at least one cutting disc (13) lying on a plane substantially parallel to the cutting direction (T) and supported rotatable around an axis of rotation (R) orthogonal to the plane itself by said frame (2), motor means (14) for rotating said cutting disk (13) about the rotation axis (R), at least one hood cover (18) associable with suction means and associated with said frame (2), in which said at least one cutting disk (13) is at least partially housed, characterized by the fact that said motor means (14) are adapted to activate the rotation of said at least one cutting disc (13) in the same direction (S), in correspondence with the cutting area, to the direction of advancement (A) of the machine itself along the cutting direction (T). 2) Machine (1) according to claim 1, characterized in that said at least one hood cover (18) comprises at the bottom an opening for the projection of at least a portion of said cutting disc (13) to interfere with the flooring (P) to be cut, which is delimited by an edge substantially coplanar to said at least one support surface (5) of said frame (2). 3) Machine (1) according to claim 2, characterized in that said edge extends along a closed perimeter to delimit said at least one cutting disk (13) in plan. 4) Machine (1) according to claim 2 or 3, characterized in that said edge is associated with deformable sealing means (20) adapted to tangle the flooring (P) to be cut. 5) Machine (1) according to one or more of the preceding claims, characterized in that said at least one hood cover (18) comprises at least one mouth (19) which can be associated with said suction means and positioned in front of said at least one cutting disk (13) with respect to the direction of advancement (A) of the machine itself along the cutting direction (T). 6) Machine (1) according to claim 1, characterized in that said motor means (14) comprise a motor shaft not coaxial with the rotation axis (R) of said cutting disk (13) and angular transmission means ( 16) with interposed gears. 7) Machine (1) according to claim 6, characterized in that said drive shaft is positioned on a plane substantially orthogonal to the rotation axis (R) of said cutting disk (13). 8) Machine (1) according to one or more of the preceding claims, characterized in that it comprises a support structure (21) for said at least one cutting disc (13) and the relative motor means (14), which is associated with said frame (2) in an oscillatable way around a pin (22) substantially parallel to the rotation axis (R) of the disc itself between two extreme configurations defining, respectively, a minimum and a maximum depth of cut obtainable, means being also provided reversible locking (23) of the positioning of said support structure (21) with respect to said frame (2) in a plurality of positions comprised between said extreme configurations to define different obtainable cutting depths. 9) Machine (1) according to claim 8, characterized in that said at least one hood cover (18) is integral with said frame (2), being shaped to allow oscillation of the cutting disc (13) between the two extreme positions.