CUTTING DEVICE FOR MANUAL CERAMIC-CUTTING MACHINES

Abstract

The invention relates to a cutting device for manual ceramic-cutting machines, which comprises a support (1) provided with: a vertical hole (11) that receives a first end of a bar (21) of a cutting tool (2), the front face (26) of said bar being provided with at least one row of recesses (27) spaced apart vertically; and a horizontal hole (12) that receives a handle (3) and a stem (4) capable of moving longitudinally between a front position for locking the cutting tool (2) and a rear position for releasing the cutting tool; the stem (4) comprising, at its front end, at least one projection (42) which, in the front position for locking the cutting tool, is accommodated in one of the recesses (27) on the front face (26) of the bar (21) of the cutting tool (2).

Claims

1. A cutting device for manual ceramic-cutting machines, comprising: a support provided with a horizontal hole with at least one threaded rear segment that receives a handle and a vertical hole that receives a cutting tool, which comprises a bar provided with a first end accommodated through the vertical hole of the support, a second end carrying a cutting wheel for marking a break line in ceramic pieces to be cut and a front face facing the horizontal hole of the support; a stem accommodated in the horizontal hole of the support capable of longitudinal movement between: a front position for locking the cutting tool and a rear position for releasing the cutting tool; the bar of the cutting tool comprises on its front face at least one row of recesses spaced apart vertically, and the stem comprises at its front end at least one projection which, in the front position for locking the cutting tool by means of the stem, is accommodated in one of the recesses of the front face of the bar of the cutting tool.

2. The device, according to claim 1, wherein the stem comprises a rear end facing a front end of the handle, and said handle is mounted on the support capable of movement between: a rear position in which it allows backward movement of the stem, and a front position in which said handle acts against the rear end of the stem preventing its backward movement and fixing it in the front position for locking the cutting tool.

3. The device, according to claim 1, wherein the bar of the cutting tool comprises at its first end a ramp inclined towards its front face.

4. The device, according to claim 1, wherein the stem comprises an intermediate thickening arranged between a front stop of the support and an annular stop, with adjustable position, threaded mounted on the threaded rear segment of the support.

5. The device, according to claim 4, further comprising a spring, inside the horizontal hole of the support, the spring configured to push the stem towards the front position for locking the cutting tool.

6. The device, according to claim 5, wherein the spring for pushing the stem towards the front position is mounted between the intermediate thickening of the stem and the annular stop.

7. The device, according to claim 1, further comprising a spring, inside the horizontal hole of the support, configured to push the stem towards the rear position for releasing the cutting tool.

8. The device, according to claim 7, characterised in that the spring for pushing the stem towards the rear position is mounted between the front stop of the support and the intermediate thickening of the stem.

9. The device, according to claim 4, wherein the annular stop comprises an interior hole for longitudinal guidance of the rear end of the stem.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] As a complement to the description provided herein, and for the purpose of helping to make the features of the invention more readily understandable, the present specification is accompanied by a set of drawings which, by way of illustration and not limitation, represent the following:

[0032] FIG. 1 shows a manual ceramic-cutting machine, carrying the cutting device object of the invention.

[0033] FIG. 2 shows a perspective view of the cutting device of the invention in which the rotation shaft of the support with respect to the runner for longitudinal movement on the guides of the cutting machine has been removed.

[0034] FIG. 3 shows an exploded elevation view of the cutting device of the invention provided with a spring for pushing the stem in the forward direction and cross-sectioned by a vertical plane, with the exception of the cutting tool.

[0035] FIG. 4 shows a perspective view of an exemplary embodiment of the cutting tool.

[0036] FIG. 5 shows a perspective view of an exemplary embodiment of the stem.

[0037] FIG. 6 shows an elevation view of the cutting device of FIG. 3 in mounted position, vertically cross-sectioned, and with the handle and stem in the front position for locking the cutting tool.

[0038] FIG. 7 corresponds to a plan view of the cutting device, with the support cross-sectioned by a horizontal plane, and with the stem and the handle in the same front position of FIG. 6.

[0039] FIG. 8 shows a view similar to FIG. 6, with the handle in a rear position, in which it allows an alternative forward and backward movement of the stem, and the change of position in height of the cutting tool.

[0040] FIG. 9 shows an elevation view of a variant embodiment of the cutting device, which comprises a spring in the horizontal hole that moves the stem towards a rear position for releasing the cutting tool, and in which the stem has been represented in said rear position.

[0041] FIG. 10 shows a view similar to FIG. 9, with the stem and the handle in a front position for locking the cutting tool.

DETAILED DESCRIPTION

[0042] FIG. 1 shows the cutting device of the invention mounted by means of a horizontal shaft (E) of rotation on a runner (C) that can be moved along longitudinal guides (G) of a manual ceramic-cutting machine.

[0043] FIG. 2 shows the cutting device of the invention isolated and without the horizontal shaft (E) of rotation to simplify the drawing and wherein the support (1) for mounting the cutting tool (2) and the handle (3) for fixing and actuating the cutting tool can be observed.

[0044] FIG. 3 shows an exploded view of an exemplary embodiment of the cutting device, showing the different elements that make it up, specifically: the support (1), the cutting tool (2), the handle (3), the stem (4), a spring (5a) for pushing the stem towards a front position, and annular stop (6).

[0045] As can be seen in greater detail in FIG. 4, the cutting tool (2) comprises a bar (21) provided with: a first end (22) with a ramp (23) inclined towards a front face (26) of the bar, a second end (24) carrying a cutting wheel (25) for marking a break line in the ceramic pieces and; on its front face (26) a row of recesses (27) spaced apart vertically.

[0046] In this specific embodiment, the recesses (27) have a length that coincides with the width of the front face. The bar (21) additionally has longitudinal channels (28) on the lateral and rear faces, shown in FIG. 7, for receiving appendages (15) defined in the vertical hole of the support (1) and their mounting in an angular position determined in said support (1).

[0047] As shown in FIG. 3, the support (1) comprises a vertical hole (11) for mounting the cutting tool (2) and a horizontal hole (12) with a threaded rear segment (13) for threaded mounting the annular stop (6) and the front end of the handle (3).

[0048] The stem (4) and the spring (5a) for pushing the stem (4) are arranged in front of the annular stop (6).

[0049] The stem (4) comprises: a rear end (41) facing the front end of the handle (3) and a front end provided with a projection (42), complementary and couplable to any of the recesses (27) on the front face (26) of the bar of the cutting tool.

[0050] In the mounting position of the device, shown in FIGS. 6 to 8, the bar (21) of the cutting tool is accommodated through the vertical hole (11); acting against the front face (26) of said bar (21) the stem (4) that is accommodated in the horizontal hole (12) of the support (1) capable of longitudinal movement and uncapable of rotation and with the intermediate thickening (43) facing a front stop (14) of the support (1); said stem (4) being pushed in the forward direction by the spring (5a).

[0051] To prevent its rotation inside the support (1), the stem has lateral planes (44) parallel to other lateral planes (16) represented in FIG. 3 and defined in a hole of the support (1) that connects the horizontal hole (12) with the vertical hole (11) and through which said stem (4) accesses the interior of the vertical hole (11) to act with its front end against the front face (26) of the cutting tool (2).

[0052] In said mounting position, the rear end (41) of the stem is mounted through the interior hole of the annular stop (6).

[0053] The spring (5a) for pushing the stem (4) is mounted around said stem (4) and comprises: a front end that acts against the rear surface of the intermediate thickening (43) of the stem and a front end that acts against a front surface of the annular stop (6). The threaded mounting of the annular stop (6) in the support (1) that allows its position to be changed and consequently the push force transmitted by the spring (5a) to the stem (4) in the forward direction.

[0054] FIGS. 6 and 7 show the device of the invention in a locking position of the cutting tool (2). In said locked position, the handle (3) that is threaded mounted into the support (1) acts with its front end against the rear end (41) of the stem, preventing its backward movement and ensuring that the projection (42) remains accommodated in one of the recesses (27) preventing any vertical movement of the cutting tool.

[0055] In the unlocked position of the cutting tool (2), shown in FIG. 8, the handle (3) is spaced apart from the rear end (41) of the stem (4), which allows said stem (4) to perform alternate forward and backward movements.

[0056] In this unlocked position, the front end of the stem (4) acts, due to the push force of the spring (5a), against the front face (26), making it necessary to hold the cutting tool with the hand while its position in height is adjusted.

[0057] When the cutting tool is moved vertically to modify its position in height, the stem (4) performs forward and backward movements, as its projection (42) comes out of a recess (27) in the bar of the cutting tool and is accommodated in the following recess (27).

[0058] The function of the inclined ramp (23), defined at the first end (22) of the bar (21), is to facilitate the initial assembly of the cutting tool in the vertical hole (11) of the support (1), through its progressive actuation against the front end of the stem (4) and the initial backward movement of said stem overcoming the push force of the spring (5a).

[0059] In the embodiment variant shown in FIGS. 9 and 10, the spring (5b), accommodated in the horizontal hole (12) of the support (1), moves the stem (4) towards a rear position for releasing the cutting tool (2), shown in FIG. 9.

[0060] As shown in FIG. 10, for the fixation of the cutting tool (2) it is enough to move the stem (4) by means of the handle (3) towards the front locking position.

[0061] Having sufficiently described the nature of the invention, in addition to a preferred exemplary embodiment, it is hereby stated for the relevant purposes that the materials, shape, size and layout of the described elements may be modified, provided that it does not imply altering the essential features of the invention claimed below.