ROPE SAW

Abstract

A rope saw for cutting panels to size includes an elongate frame, which includes a support for placing panels to be sawn thereon. Two wheels are attached to the frame for mounting a revolving saw rope, between which extends a longitudinal direction of the frame. An electric motor is attached to the frame for driving one of the two wheels. The electric motor includes a motor shaft, which extends in longitudinal direction of the frame and which is coupled via a flexible shaft to one of the two wheels.

Claims

1. A rope saw for cutting panels to size, comprising: an elongated frame, which includes a support for placing panels to be sawn thereon; two wheels attached to the frame configured for mounting a revolving saw rope, between which extends a longitudinal direction of the frame; an electric motor attached to the frame configured for driving one of the two wheels; wherein the support is pivotably attached to the frame.

2. The rope saw according to claim 1, wherein the electric motor includes a motor shaft, which extends in longitudinal direction of the frame and which is coupled to one of the two wheels via a flexible shaft.

3. The rope saw according to claim 1, wherein the two wheels for the saw rope both have a revolving support surface made of plastic.

4. The saw rope according to claim 3, wherein the plastic is a urethane.

5. The rope saw according to claim 1, wherein a supporting wall is attached to the frame for supporting a panel standing on the support.

6. The rope saw according to claim 1, wherein the support is fixable in infinitely adjustable angle positions.

7. The rope saw according to claim 1, wherein the two wheels both have a diameter of at least 20 cm.

8. The rope saw according to claim 1, wherein the flexible shaft is coupled to one of the two wheels via gears.

9. The rope saw according to claim 1, wherein the support is a strip, the longitudinal direction of which extends transversely to the longitudinal direction of the frame.

10. The rope saw according to claim 1, wherein the frame includes a fold-out foot.

11. The rope saw according to claim 1, wherein the two wheels protrude in longitudinal direction of the frame beyond the two ends thereof.

12. The rope saw according to claim 1, wherein the support is movable transversely to the longitudinal direction of the frame relative to the wheels.

13. The rope saw according to claim 1, wherein one of the two wheels is movable relative to the frame in longitudinal direction of the frame, and wherein a spring is active between the frame and the wheel movable relative thereto for predefining the saw rope tension with its spring force.

14. The rope saw according to claim 13, wherein the frame and the wheel movable relative thereto are connected to each other via a linear guide.

15. The rope saw according to claim 1, comprising a saw rope tensioned between the two wheels, wherein the saw rope comprises diamond-studded wire.

16. A rope saw for cutting panels, comprising: an elongated frame, which includes a support for placing panels thereon; two wheels attached to the frame, between which extends a longitudinal direction of the frame, said wheels both comprising a plastic surface for mounting a revolving saw rope; an electric motor attached to the frame configured for driving one of the two wheels; wherein the support is pivotably attached to the frame.

17. A rope saw for cutting panels, comprising: an elongated frame, which includes a support for placing panels thereon; two wheels attached to the frame and configured for mounting a revolving saw rope, between which wheels extends a longitudinal direction of the frame; an electric motor attached to the frame configured for driving one of the two wheels; wherein the support is pivotably attached to the frame; and wherein a supporting wall is attached to the frame configured for supporting a panel that is standing on the support and leaning on the supporting wall.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Further details and advantages of the invention are explained by way of illustrative embodiments with reference to the attached drawings. Identical and mutually corresponding components are identified therein with matching reference symbols. In the drawings:

[0021] FIG. 1 shows an embodiment of a rope saw according to the invention;

[0022] FIG. 2 shows a further view of the rope saw;

[0023] FIG. 3 shows a further view of the rope saw;

[0024] FIG. 4 shows a view of the rope saw according to FIG. 2 with folded-out foot;

[0025] FIG. 5 shows the rope saw with a panel to be sawn; and

[0026] FIG. 6 shows a further embodiment of a rope saw according to the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] The rope saw shown in various views in FIGS. 1 to 4 has an elongate frame 1, which supports two wheels 4, 5 for mounting a saw rope 6. The saw rope 6 is an endless saw rope, which has been produced by connecting, for example gluing, the two ends of a saw rope to each other. At its lower end the frame 1 has a foot 2. As shown in particular in FIG. 2, the lower wheel 4 protrudes beyond the foot 2 of the frame 1. The rope saw cannot therefore be operated in a position, in which the longitudinal direction of the frame 1 is vertical. The rope saw is intended for operation in a position, in which the longitudinal direction of the frame extends obliquely to the vertical.

[0028] For this reason, the rope saw has a further foot 8, which is foldably attached to the frame 1. When the rope saw is standing on its foot 2 rigidly attached to the frame 1 and its foot 8 foldably attached to the frame 1, the longitudinal direction of the frame 1 is oblique to the vertical, so that the lower wheel can turn as well. Alternatively the rope saw can also be used leaning against a wall. To this effect the frame 1 may have a pad 3 at its end facing away from the foot 2 for leaning against a wall.

[0029] One of the two wheels 4, 5—wheel 4 in the embodiment shown—is driven by an electric motor 9 mounted on the frame 1. The electric motor has a motor shaft, which extends in longitudinal direction of the frame and is coupled via a flexible shaft 11 to the driven wheel 4. To this end the driven wheel 4 is provided with a gear unit 10, via which the flexible shaft 11 is coupled to the driven wheel 4.

[0030] The frame 1 includes a support 12 for placing panels to be sawn thereon. The support 12 is in the shape of a strip, the longitudinal direction of which extends transversely to the longitudinal direction of the frame 1. Panels to be sawn are placed with one edge on the support 12, in other words, panels to be sawn stand upright on the support 12. Therefore a slim support 12 is sufficient and advantageous because of its correspondingly low weight. The support 12 may be pivotably attached to the frame 1 and may be infinitely fixable in different angle positions.

[0031] A supporting wall 13 attached to the frame 1 is associated with support 12. Panels standing on the support 12 are thus prevented from toppling over by the supporting wall 13. The supporting wall 13 may be pivotably attached to the frame 1. FIG. 4 schematically indicates different angle positions of the supporting wall 13, with which a panel can be cut into a wedge shape.

[0032] The support 12 together with the supporting wall 13 is attached to a bracket 16 of the frame 1, which is movable relative to the remaining frame 1 and in particular relative to the wheels 4, 5 transversely to the longitudinal direction of the frame 1, for example by means of a linear guide. A panel 17 standing on the support 12 can therefore—as shown in FIG. 5—be precisely cut. The electric motor 9 is mounted on the movable bracket 16.

[0033] The frame 1 has a handgrip 14 attached to it, which may be provided with a button 15 for switching the rope saw on and off.

[0034] The two wheels 4, 5 both have a revolving supporting surface made of plastic, on which the saw rope 6 is supported. Polyurethane for example is well suited. If, as is preferred, one or more diamond-studded wires are used as saw rope 6, which may be twisted or intertwined, wear may be reduced in case of a supporting surface made of plastic, in particular polyurethane.

[0035] With a saw rope 6 consisting of diamond-studded wire the coating on the wire may chip off due to strong bending. In order to reduce wear therefore the two wheels 4, 5 each have a diameter in the range between 40 and 50 cm.

[0036] One of the two wheels 4, 5 is movable relative to the frame 1 in longitudinal direction or the frame 1. In the embodiment shown the non-driven wheel 5 is movable relative to the frame 1. The frame 1 is connected to the wheel 5 movable relative thereto via a linear guide 20, which is realized, for example via pins, which sit in a socket, which is attached to a suspension of the movable wheel 5. These pins may be surrounded by a helical spring, the spring force of which pushes the movable wheel 5 away from the frame 1 resulting in an equilibrium of forces between the tension in the saw rope 6 and the spring force.

[0037] The rope saw depicted in FIG. 6 differs from the rope saw shown in FIGS. 1 to 5 only in that the electric motor 9 sits on the wheel 4 driven thereby. With the embodiment of FIG. 6 there is therefore no need for a flexible shaft. Instead the electric motor 9 may drive the wheel 4 with a rigid shaft while being retained by the frame 1.

LIST OF REFERENCE SYMBOLS

[0038] 1 frame [0039] 2 foot [0040] 3 pad [0041] 4 wheel [0042] 5 wheel [0043] 6 saw rope [0044] 8 foot [0045] 9 electric motor [0046] 10 gear unit [0047] 11 flexible shaft [0048] 12 support [0049] 13 supporting wall [0050] 14 hand grip [0051] 15 button [0052] 16 bracket [0053] 17 panel