SK66394A3 - Polishing machine - Google Patents

Abstract

A polishing machine is intended to carry out the polishing of marginal areas of a floor, close to the walls, where conventional machines have difficulty to reach those areas, as well as the plinth, which cannot be reached by conventional machines. The disclosed machine comprises a rolling platform (1) within is mounted on a frame (5) including the motor unit of the machine, consisting of a motor (6) which, through a set of gears (8 and 10), transmits the motion to a shaft (11) substantially lowered and connected to the polishing head (12) so that the tool associated to said head (12) is capable of contacting axially the plinth and radially the floor, the driving shaft (11) being also displaceable transversally to the machine. <IMAGE>

Description

Polishing machine

Technical field

The invention relates to a polishing machine, in particular for polishing floors, in particular marginal areas of floors, whereby the polishing machine can be used in particular for cleaning skirting boards and other similar operations.

BACKGROUND OF THE INVENTION

Polishing machines, which are normally used for floor polishing, have a vertical output shaft terminated by a grinding element or a polishing element which acts in a horizontal plane on the floor by rotary motion.

This type of machine, although well performing its polishing function on most of the floor surface, has the particular disadvantage that you cannot belong to its edges, that is, the areas closest to the walls, which means that sharp and considerable irregularities remain in these peripheral areas. which, on the one hand, have an unattractive appearance and, on the other hand, worsen the conditions for placing a certain type of furniture, such as bookshelves or other elements attached to the walls.

In addition, conventional polishing machines can only be used for floor polishing and cannot be used for cleaning or polishing skirting boards.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a polishing machine which complements any conventional floor polishing machine in the sense that once a conventional polishing machine has finished floor polishing, the polishing machine of the invention will polish the edge portions of the floor to achieve an optimal homogeneous floor surface. or additionally capable of cleaning skirting boards.

SUMMARY OF THE INVENTION

This is accomplished by a polishing machine, in particular for polishing the edges of floors and the like. polishing of baseboards, according to the invention, which consists of a traveling platform on which a frame is mounted, comprising a machine drive unit comprising a motor of suitable power, attached to a support and transmitting pulleys and belts moving to a horizontal drive shaft projecting on the side of the frame and terminated by a corresponding polishing head, the drive shaft being located below the engine in a position closest to the running platform.

In other words, the polishing machine of the invention comprises a small traveling platform provided with double-bend arms to accommodate the traveling wheels so that the platform can be positioned as close to the floor as possible.

This platform carries a frame.

in which a propeller is mounted on the respective support which drives a horizontal shaft relatively close to the running platform through a suitable transmission, the horizontal shaft having a free end outside the frame provided with a polishing head which operates radially at the edges of the floor; perform or polish the edges of the floor, while in the axial direction it can clean or polish the skirting boards

According to a preferred embodiment of the invention, the support of the functional elements is connected to the frame by means of height-adjusting spindles enabling the position of the working elements to be changed and in particular the distance of the horizontal shaft with the polishing head from the floor.

In addition, the polishing head can be moved in the lateral direction.

According to a further preferred embodiment of the invention, the torque on the polishing tool shaft is transmitted from the drive shaft by a belt provided with a mobile tensioner, which allows less distance between the drive shaft and the polishing tool shaft, while the polishing tool is supported on the polishing tool. and the torque is also transmitted to it by means of a suitable transmission from a small auxiliary engine which can be operated independently of the main engine.

According to a further preferred embodiment, the output shaft for the polishing tool can be divided into two parts which are telescopically connected to each other with the insertion of a compressed spring which exerts a certain pressure on the mechanism by which the machine then acts frontally on the skirting boards. back when it encounters any obstacle, preventing it from being damaged.

According to a further preferred embodiment of the invention, a source of rotary motion is provided on the output shaft of the extension in the main housing, an auxiliary drive is provided at the motor, and the resilient transmission element is connected to the tool. needs may be f

of considerable length, terminated by a hand, and which is provided with the attachment of several additional operations to special operations under special circumstances, such as cleaning and polishing floor and skirting boards behind or below the heating elements or other places which are difficult to reach

Use a machine that uses only the main polishing tool.

This flexible transmission element may have its own switch for switching the main motor of the polishing machine on and off so that it can be actuated without having to go to the polishing machine.

According to a further preferred embodiment of the invention, the polishing machine, which can be guided directly by using a handle placed on its housing, is provided with an auxiliary attachable arm which makes it operable in a much more comfortable position, i.e. in an upright position. In addition, the head arm is provided with a suitable double handle, i.e. to be operated by both hands, and may additionally be provided with a small head carrying controls for operating the driving elements of the machine, in particular the main motor acting on the polishing tool and auxiliary motor moving the cross-polishing tool.

If it touches the position of the polishing tool drive shaft, this drive shaft, instead of being displaceable transversely fixed at a certain position, can greatly simplify the construction, and this position can be eccentric, that is, moved to the side, the polishing tool protrudes sufficiently away from the frame or housing of the polishing machine to one side to be able to reach the corner of the cleaning area. In addition, the drive shaft may protrude to the other side of the polishing machine, the other end of the drive shaft having a further functional element so that in one position of the machine it is easy to reach the right-hand corner and by reversing it can easily reach the opposite corner.

However, since this solution of the tool, which may be inconvenient, in which the shaft is transverse displacement is not performed requiring frequent change of position is made between the solutions, the displaceable, but this motor, lies manually. For this purpose, the drive shaft of the tool, and in particular the body of the polishing machine supporting the drive shaft, is mounted on a carriage which is transversely displaceable along guides which are functionally formed on the machine frame, said carriage being operated by a lever mounted on a support motor or any suitable fixed element of the polishing machine, acting on one end thereof, provided with a handle, the other end connected to said body supporting the drive shaft displacing said body.

The lever is provided with a locking mechanism for stabilizing in two end working positions, the change from one position to another can be made very quickly and easily.

According to a further preferred embodiment of the invention, the polishing machine is provided with a very fast tool change system, so that although two tools can be used simultaneously connected to both ends of the drive shaft, only one of them can be used. replaced.

For this purpose, the drive shaft is provided with a disc which is hollow and has at its front a plurality of slotted openings for the bayonet connection of a plurality of head or extension bars connected to the polishing tool, the slotted openings being extended at the ends to allow passage extension heads to allow insertion of bars attached to the tool. into the slotted holes, pushing them against and rotating against the inner disc, pressed against the front side of the hollow slotted disc with a spring, which acts as a stabilizing or braking means fastening the polishing tool to the drive shaft.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be further elucidated with reference to the accompanying drawings, in which:

Fig. 1 schematically shows a plan view of a polishing machine

according to the invention.

Fig. 2 shows a side view of a polishing machine according to the invention, Fig. 3 shows a side view of a polishing machine similar to a polishing machine machine from Fig. 1 and 2, but provided with a transverse mechanism

relocation of the functional head and additional drive designed to attach a flexible transmission element,. .

Fig. 4 schematically shows a plan view of a polishing machine with a cover in section, FIG. 5 is a cross-section along line A-B of FIG. 3 polishing

machine tool. with mechan i grains on the transfer motion on the drive hr i ade l Fig. 6 view from the front on polishing machine that is in position rotated about 90 oprot i depiction on Fig. 3 with cover in section; and provided with control long arm,

with the operating head in an enlarged scale in the rotated state, FIG. 7 is a perspective view of flexible transmission elements with fasteners that can be connected to said auxiliary drive of the polishing machine; FIG. 8 is a schematic plan view of a practical embodiment of a polishing machine in which the tool drive shaft has a fixed and substantially eccentric position; FIG. Fig. 9 is a side view of a polishing machine with a cover partially in section to illustrate the arrangement of its internal structure; 10 is a front view of a disc mounted at the end of the drive shaft, FIG. 11 is a cross-sectional view of the disc or head of FIG. 10 with the respective brush or polishing tool in the exploded state, FIG. 12 shows a schematic plan view of a polishing machine in cross-section just below the support of the drive motor, in an embodiment in which the transverse adjustment of the tool drive shaft is performed manually; FIG. 13 is a cross-sectional side view of the polishing machine of FIG. 12, FIG. 14 and 15 are two perspective views of a polishing machine illustrating its external appearance.

DETAILED DESCRIPTION OF THE INVENTION

The polishing machine consists of a traveling platform X provided on opposite sides with arms 2 bent up first and then out so that the free end of each arm 2 can be coupled to a wheel 3, preferably freely movable, so that it is supported in the resulting bend at the end of each arm 2, wherein the traveling platform χ remains very close to the floor 4, see in particular FIG. Second

The traveling platform X is connected to a frame 5 which holds inside the functional elements of the polishing machine, in particular the main motor 6, the parameters of which are suitable for driving the polishing tool 14, the main motor 6 ® at a suitable rotational speed. that is, it uses the uppermost part of the frame, its drive shaft being terminated by a pulley through which the belt 9 is guided further through another pulley 10 fixedly mounted on the drive shaft of the polishing machine to drive it out of the frame

5a is terminated by a suitable polishing head 12, optionally in the form of a hollow disk, the design of which will be described below, to which the polishing tool 14 is attached.

The support 7 of the drive unit of the polishing machine is attached to the frame and can be vertically adjustable, in particular by means of spindles

13, shown schematically, rotated from the outside of the frame 5 by means of respective control elements not shown, so that by means of these spindles 13 the drive unit as a whole, and Leda, can also be a polishing head 12.

raised or lowered until it reaches the best position with respect to the floor 4 for performing an optimum polishing function of the polishing machine, in particular the circumferential space of the polishing tool 14 acting on the floor 4.

As already mentioned, the polishing tool 14 connected to the polishing head 12 can also act in the axial direction on the skirting boards and the drive shaft 11 need not only be adjustable in height, but also in the lateral direction.

In the embodiment of FIG.

of the basic construction, i.e. from up to 7, is based on the same same platform 1, provided with small diameter cradles intended to separate the platform X from the floor 4, where the platform X is fitted with a frame 5 on which the electric main motor is mounted. 6, by means of vertical spindles adjustable in height.

A polishing head 12 in the mold is attached to the axial bushing 15, which is telescopically attached to the drive shaft 11.

A disc for attaching the polishing tool 14, wherein a spring is mounted between the axial bushing 15 and the drive shaft 11

16 which tends to push the polishing head 12 out into the restricted position defined by the screw

17 mounted in a slot provided in the housing 15 for the extension of the drive shaft 11.

which allows telescopic

In addition to the main motor 6, the polishing machine is equipped with a small auxiliary motor 19.

whose output shaft 20 is provided with a spindle 21 which transmits movement to the gear 22, whose shaft in turn forms a spindle 23 which passes through a threaded sleeve 24 connected to a sliding element

25, which can be moved transversely to the guides 26, and which in turn forms a support element for the drive shaft 11 of the polishing tool 14, thereby transmitting a horizontal displacement movement to the drive shaft 11 and hence to the polishing tool 14 as required by the operator.

This transverse displacement of the drive shaft

The cleaning tool 14 means that the pulley 10 connected to the drive shaft 11 and 11 will be at a different distance from the pulley 8 connected to the output shaft of the main motor 6, so that a belt 9 is provided for transmitting torque. e 1ementu

28. which can be moved transversely and which is loaded with spring

29, wherein the spring 29 presses the tensioner i at the roller k

the driving belt

9, thereby ensuring torque transmission at any relative position of the output shaft of the main motor 6 and the drive shaft H

Cleaning tool

14, which is laterally displaceable.

According to a further embodiment, the output shaft of the main motor 6 may be provided with an extension 30, terminated by an auxiliary drive 30 *, which can be mounted in bearings 31. to which

A flexible transmission element 32, consisting of a fixed housing, can be connected.

within which a transfer cable terminated by a small sleeve 33 housed in a hand-held head 34 and secured to a resilient transmission element 32, wherein a polishing tool through which the polishing tool can be carried can be attached to a small cleaning or polishing process. places that are hard to reach. The flexible transmission element 32 has a long length ensuring a wide range of operation. To accelerate the handling of the polishing machine in this sense, the flexible transmission element 32 is connected to an electrical cable 35 terminated by a control knob or switch 36, which is then actuated by the main motor 6, the electrical cable 35 having a connector 37 at its other end. it is plugged into the corresponding other connector, fixed in the cover 38 of the polishing machine.

As shown in FIG. 6, in addition to the handle for direct control of the polishing machine, the cover 38 is provided with a long arm 39 which can be attached to the cover 38 in cases where a more comfortable operation of the polishing machine is desired and terminated with a double handle 40 facilitating manual operation of the polishing machine to which is attached a small head 41. in which a button 42 for controlling the main motor 6 is provided, connected to the respective signal line 43 and a switch 44 for controlling the auxiliary motor 19 in a certain direction, the head 41 being further connected to another electrical conductor 45 terminated by a connector 46 into a corresponding connector 47 located in the polishing machine housing 38, which is further provided with a main wiring and other necessary components for the motors 6, 19, such as capacitors, fuses, etc.

According to a further embodiment of the invention shown in FIG. 8 to 12, to replace the transverse movement system

1, the drive shaft 11 places the drive shaft 11 in a substantially eccentric position, see in particular and protrudes from the housing with its two ends terminated by two polishing heads 12.

2 'in the form of hollow discs.

Thus, the polishing tool 14 can have absolute access to any corner.

since it protrudes from the side of the polishing machine housing, using one of the driving ends whether it is a right or left corner, as shown in FIG. 9, where the polishing tool 14 is shown in dotted lines.

To complement the solution shown in FIG. 8a 9 or one of the two described versions of the polishing machine, each polishing head 12 in the form of a hollow disk may be provided with several arcuate slot apertures with a center of curvature in the drive shaft 1 e 11 with 48 'extensions at one end. head or extension 49 of the same number of rods 50.

attached to the brush plate or polishing tool 14, which is connected to the polishing head 12 so that the bars 50 with their heads and extensions 49 are inserted into the arc slot holes 48 into their extension

48 *. furthermore, in the manner of a bayonet lock, it is necessary to press out the inner disc 52 loaded by the spring 53 and rotate the polishing tool 14 to the fastening position.

the inner disc

52, loaded by the spring 53, permanently presses on the heads or extensions 49 of the rods 50, so that they act as their braking force, in other words as a stabilizing means when the polishing tool is attached to the polishing head.

12In order to ensure that the polishing tool 14 has access to any corner.

FIG. 12 to

15, in which the drive shaft 11 of the polishing tool 14 with the respective pulley 10, to which the torque is transmitted by the belt 9, is fixed with some freedom of rotation by means of not shown bearings in a body 54 attached to the carriage 55 which can move across the guides 56 so that the carriage 55 can assume two end lateral positions with respect to the polishing machine, as well as the polishing tool 14 connected to the drive shaft 11. moving the carriage §5 during its transverse movement.

The transverse displacement is performed manually by means of a lever 57 fixed so that it can oscillate in a horizontal direction about a pivot pin 58 mounted in the support 59 of the main motor 6, the lever 57 transmitting its pivoting movement through its inner end and pin 60 to the body 54 , which then moves in the transverse direction. The lever 57 extends outwardly, passing through a horizontal wide slot 62 and terminating in a handle 61. The lever 57 is further provided with an L-shaped arc extension 63, the vertical portion of which is provided with two end holes 64 to engage the pull-out pin 65. 66, and which, due to the spring, tends to permanently push against the curved and convex surface of the arc extension 63, automatically engaging in one of the end holes 64 which determine the two stable positions of the lever 57 and hence the two stable positions of the drive shaft 11 carrying the polishing tool. 14th

It remains only to mention the overall appearance of the polishing machine shown in FIG. 14 and 15, and for illustrative purposes only, the polishing machine housing 38 may be varied according to the embodiment without affecting the nature of the invention.

Claims (13)

PATENT CLAIMS A polishing machine, in particular for polishing the edges of floors and for polishing skirting boards, characterized in that it consists of a traveling platform (1) on which a frame (5) is mounted, comprising a machine drive unit comprising a motor (6). ) of a suitable power, attached to the support and transmitting pulleys (8, 10) and belts (9), to a horizontal drive shaft (11) projecting from the side of the frame (5) and terminating with a respective polishing head (12), the drive shaft (11) is located below the engine (6) in a position closest to the platform (1). Polishing machine according to claim 1, characterized in that the running platform (1) has two arms (2) bent upwards and outwards at the point where the wheels (3) are provided, so that the wheels can be mounted in these bends and the trolley (1) could take up position on the wheels (3) and therefore on the floor. Polishing machine according to one of the preceding claims, characterized in that a support for the drive unit is fixed to the frame by means of vertical spindles (13), so that the spindles (13) allow height adjustment of the working position of the drive shaft and therefore the polishing head. (12) for approaching or moving away from the floor, wherein the drive shaft (11) is also adapted to adjust the position in the lateral direction. The polishing machine according to claim 3, characterized in that the means for laterally displacing the drive shaft (11) is a small auxiliary motor (19) provided for transmitting transverse movement by a suitable transmission to support the sliding element (25) mounted on the cross guides (26), and this support is coupled to the drive shaft (11) of the polishing tool. The polishing machine according to claim 4, characterized in that the drive belt (9) guided by the main motor pulley (8) and the pulley (10) of the polishing tool drive shaft (11) is further guided by a tension roller (27) mounted on a transverse a movable support or sliding element (28) connected to a spring (29) which presses the tensioning roller (27) to the drive belt (9). Polishing machine according to one of the preceding claims, characterized in that the polishing tool drive shaft (11) is divided into two parts, that is, a transverse and displaceable shaft (11) provided with a pulley (10) receiving movement from the main and a housing (15) to which the polishing tool support disk (12) is attached, the two drive shaft elements being connected telescopically with the insertion of a spring (16) that pushes the support disk (12) outwardly to a limited extent a position defined by a screw (17) screwed into the shaft (11) and guided in the longitudinal slot (18) in the housing Polishing machine according to one of the preceding claims, characterized in that the output shaft (30) of the main motor (6) is connected to the auxiliary drive (30 ') by means of a suitable transmission, in addition to the pulley (8). ), housed in the machine housing and allowing the long flexible transmission element (32) to be connected to the main engine such that its free end is terminated by a small head (34) held in the hand in which the sleeve (33) is attachment of the auxiliary tool, wherein the flexible transmission element (32) makes it possible to reach hard-to-reach places usually not reachable by the main tool, which is further ensured by the electrical cable (35) at one end having a connector (37) and at its other end, on said head (34), a button switch (36) controlling the main engine of the machine. Polishing machine according to one of the preceding claims, characterized in that, in addition to the handle for its direct control, the housing of the machine is provided with means for detachably attaching a long arm (39) terminating in a double handle (40) and provided with an electrical conductor (45). which can be detachably coupled to the machine, the double handle (40) being provided with a head (41) having a button (42) for controlling the main motor (6) connected to the signal line (43) and a switch (44) for operating the auxiliary motor (19) that moves the tool in the transverse direction. Polishing machine according to claims 1 to 3, 7 and 8, characterized in that the drive shaft (11) is mounted in the machine frame in a substantially eccentric configuration, in particular on one of the sides of said frame, so that the working tool (14) can reach space of both the floor and the skirting board in the corner on the machine side, further the drive shaft (11) protrudes from the machine cover (38) at the other end and is provided with two heads or functional discs (12) for connecting the respective tools ( 14) so that by reversing the machine position it is possible to reach the corner in the opposite direction. Polishing machine according to one of Claims 1 to 3, 7 and 8, characterized in that the drive shaft (11) is mounted in a housing (54) coupled to the carriage with free rotation. 16 &lt; 7 &gt; which can be moved transversely along the machine frame with said lever body (54) pivoting into the handle (61) for manual means in the two end working (14). (55), the transverse guides (56), to move transversely by means of a terminated outer and provided with locking positions which are two tool-bearing shafts (11) 11. A polishing machine according to claim 1, characterized in that the lever (57) is a motor (6) or a pivot (58), (60) carrying a shaft (11), (62) of the cover, an arc and an end lock. 65), and which pin (65) may be non-suitable wherein its movement on which protrudes by extending (63) t surfaces are provided with levers (57) in two which is permanently snapped into one by means of the side, end positions of the driving claim 10 characterized by rotatably mounted on the support (59) of the static element by means of the free end is provided with a pin body (54) containing the driving second end, before the slot handle (61) outwards is provided with boiling L, vertical part two holes (64) at the operating positions, by means of a spring bore (64) pressed against the lever, with the outside of the machine housing. button pull away (66) Polishing machine according to one of the preceding claims, characterized in that each head or functional disk (12) mounted on each end of the drive shaft (11) is provided with several arc slots (48) with the same angular distribution, determined by in the manner of a bayonet closure for receiving an equal number of bars (50) connected to the brush plate or polishing tool (14), and these bars (50) are terminated by extended heads (49) adapted to extensions (48 ') provided at one end slotted holes (48) in the disc (12) to allow the connection of bars (50) that numerically and positively correspond to said slotted holes (48). Polishing machine according to one of the preceding claims, characterized in that each functional head (12) is provided with a further inner disc (52) which is axially displaceable against the outer disc (12) by the action of a spring (53) and forms a means for in engaging the heads (49) of the rods (50) of the tool (14) to stabilize them in the assembled position.