MACHINE FOR CUTTING TUBES

Abstract

A machine for cutting tubes is provided including a support table, at least two tube rests protruding from the table and arranged at a distance from one another, and a separating device arranged therebetween. The support table has a substantially flat tube-supporting surface, and the separating device has a cutting knife and a tube feed which can move parallel to the separating plane and has two thrust pieces arranged on both sides of the separating plane, each having a tube contact surface. At least one of the thrust pieces has a thrust piece attachment adjustably attached to a carrier and having tube contact surfaces.

Claims

1. A machine for cutting hoses comprising a support table (1), at least two hose rests (3) protruding therefrom and spaced apart from one another, and a cutting device (4) disposed between them, wherein the support table (1) has a substantially plane hose support face (2) and the cutting device (4) comprises a cutting blade (5), which extends in a cutting plane disposed substantially perpendicular to the hose support face (2), as well as a hose feed (7), movable parallel to the cutting plane, with two thrust pieces (9) disposed on both sides of the cutting plane with one hose contact face (10) each, wherein at least one first of the thrust pieces (9) is provided with a thrust-piece attachment (12) affixed positionably on a carrier (11) and provided with the associated hose contact face (10).

2. The machine of claim 1, wherein the positionability of the thrust-piece attachment (12) comprises at least an ability to change the angular position of the hose contact face (10) relative to the hose support face (2).

3. The machine of claim 2, wherein the thrust-piece attachment (12) is positionable on the carrier (11) by the fact that it can be pivoted around an axis (Y) directed substantially parallel to the hose support face (2) and substantially perpendicular to the cutting plane.

4. The machine of claim 1, wherein the positionability of the thrust-piece attachment (12) comprises its parallel displacement on the carrier (11) to generate a parallel offset of the two hose support faces (10) relative to one another.

5. The machine of claim 1, wherein the second thrust piece (12) comprises a carrier (11) and a thrust-piece attachment (12) affixed positionably thereon and provided with the associated hose support face (10).

6. The machine of claim 1, wherein the hose feed (7) comprises a one-piece feed block (8), on which the carrier (11) of the first thrust piece and the second thrust piece (9) or its carrier (11) are constructed.

7. A machine for cutting hoses, comprising a support table (1), at least two hose rests (3) protruding therefrom and spaced apart from one another, and a cutting device (4) disposed between them, wherein the support table (1) has a substantially plane hose support face (2) and the cutting device (4) comprises a cutting blade (5), which extends in a cutting plane disposed substantially perpendicular to the hose support face (2), as well as a hose feed (7), movable parallel to the cutting plane, with a feed block (8), on which two thrust pieces (9) disposed on both sides of the cutting plane, with one hose contact face (10) each are formed, wherein the feed block (8) is positionably mounted in such a way that the orientation of the two hose contact faces (10) relative to the cutting plane is variable.

8. The machine of claim 7, wherein the feed block (8) is mounted such that it can be rotated relative to a pivot axis (X).

9. The machine of claim 8, wherein the pivot axis (X) is disposed substantially perpendicular to the hose support face (2).

10. The machine of claim 7, wherein the hose contact faces (10) have convex structure.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0014] The present invention will be explained in more detail hereinafter on the basis of several preferred exemplary embodiments illustrated in the drawing, wherein:

[0015] FIG. 1 shows, in a perspective schematic diagram, the configuration features essential here for a hose-cutting machine corresponding to the prior art,

[0016] FIG. 2 shows, in perspective view, the part of the hose feed that is decisive here in a first embodiment of an inventive hose-cutting machine,

[0017] FIG. 3 shows, in perspective view, the part of the hose feed that is decisive here in a second embodiment of an inventive hose-cutting machine and

[0018] FIG. 4 shows a section through the part, shown in FIG. 3, of the second embodiment of the hose-cutting machine according to the invention; and

[0019] FIG. 5 schematically illustrates a second alternative implementation of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The machine for cutting hoses, schematically illustrated in FIG. 1, comprises, as is known from the prior art (see, for example, GB 1505113) and therefore needs no more detailed explanation, a support table 1 with a substantially plane hose support face 2, two hose rests 3 protruding therefrom and spaced apart from one another, and a cutting device 4 disposed between them. The latter comprises a cutting blade 5 in the form of a cutting wheel 6, which is driven in rotating manner (arrow A) around an axis X that is substantially parallel to hose support face 2, and which defines a cutting plane directed substantially perpendicularly relative to hose support face 2. Furthermore, cutting device 4 comprises a hose feed 7, which is movable (arrow B)by means of a feed mechanism, not shown, disposed underneath support table 1parallel to the cutting plane as well as parallel to hose support face 2. This is provided with two thrust pieces 9, each having a hose contact face 10, disposed on both sides of the cutting plane, constituting part of a one-piece feed block 8, which is substantially U-shaped in horizontal section. Hose feed 7 brings about feed motion and increasing deflection of the hose to be cut, bearing on the two hose rests 3.

[0021] Building on this basic configuration of the hose-cutting machine, the exemplary embodiment of the invention shown in FIG. 2 is characterized by the specific configuration of hose feed 7 explained hereinafter. Its thrust pieces 9 are of multi-piece type, in the sense that they respectively consist of a carrier 11 and a thrust-piece attachment 12 affixed positionably thereon and provided with the associated hose contact face 10. These thrust-piece attachments 12 are respectively constructed as a substantially L-shaped sheet-metal part 13 with a long branch 14 and a short branch 15, placed externally on the associated carrier 11. In the region of its long branch 14, the respective thrust-piece attachment 12 is mounted on the associated carrier 11 so as to be pivotable (arrow C) around an axis Y disposed substantially parallel to hose support face 2 and substantially perpendicular to the cutting plane. Hereby it is possible to adjust the angle that the hose contact face 10 defined by short branch 15 of thrust-piece attachment 12 assumes relative to hose support face 2. A clamping screw 17 cooperating with an arc-shaped elongated hole 16 is used for fixation of the adjusted position.

[0022] In the second exemplary embodiment illustrated in FIGS. 3 and 4, the two thrust pieces 9 of hose feed 7 are also of multi-piece type, in the sense that they respectively consist of a carrier 11 and a thrust-piece attachment 12 affixed positionably thereon and provided with the associated hose contact face 10. However, the positionability of thrust-piece attachments 12 is provided in this case in the form of their parallel displacement (arrow D) on the respective carrier 11. Thus a parallel offset of the two hose support faces 10 relative to one another can be adjusted.

[0023] For this purpose, in order to receive a substantially rectangular thrust-piece attachment 12, each of the two carriers 11 is provided with a corresponding pocket 18, open toward the end face of carrier 11. Thrust-piece attachment 12 protrudes out of the associated carrier 11, wherein the extent by which it protrudes can be positioned. For this purpose, a positioning screw 19 is provided, which is fixed at its end on thrust-piece attachment 12 by rotation around a fixed axis, wherein it cooperates with a thread 20 constructed in carrier 11.

[0024] In FIGS. 3 and 4, it is obvious that the inclination of hose contact faces 10 relative to hose support face 2 differs from 90. The axis of parallel displaceability of thrust-piece attachments 12 then runs perpendicular to the orientation of the respective hose contact face 10. Furthermore, threaded bores 21 used to join feed block 8 with a feed mechanism disposed underneath the support table (see FIG. 1) are visible in FIG. 4.

[0025] Merely for the sake of completeness, it must be pointed out that a combination of the two illustrated positioning capabilities in a single hose feed is possible, by constructing one of the thrust pieces according to FIG. 2 and the other according to FIGS. 3 and 4.

[0026] According to FIG. 5, which illustrates an alternative form of implementation of the present invention, hose feed 7, which is movable parallel to the cutting plane (arrow B), comprises a feed block 8, on which two thrust pieces 9 disposed on both sides of the cutting plane are designed with one hose contact face 10 each. This feed block 8 is positionable in such a way, namely is mounted such that it can be rotated (arrow C) by a defined extent (e.g. +/5) around pivot axis X, which is directed substantially perpendicularly relative to hose support face 2, that the orientation of the two hose contact faces 10 is variable relative to the separating plane. Depending on the specifically adjusted angular position of feed block 8, one of the two thrust pieces 9 together with the associated hose contact face 10 leads or lags the other thrust piece 9 more or less noticeably in feed direction B of hose feed 7. It is then possible, by suitable mounting of feed block 8, to compensate for a lateral offsetinduced by rotation of feed block 8 around axis Xof the two hose contact faces 10 relative to the cutting plane.

[0027] In other respects, the embodiment according to FIG. 5 can be understood directly from the foregoing explanations of the invention, and so no further descriptions are needed.