FR2843904A1 - Assembly for cutting long rods into shorter sections of predetermined length, e.g. stakes or journals, includes pliers device with pivotal cutting jaws and a stop device on a perpendicular rail for determining length of cut sections - Google Patents

Abstract

The cutting assembly includes a pliers device (1) with a pair of pivotal cutting jaws (9,10) and a device (2) for determining the length of the cut sections of the longitudinal rod (4) being cut. The length-determining device includes a stop (30) mounted on a rail (28) perpendicular to the pliers device. The stop is fixed in position by a nut (34) and is disposed a specific desired distance from the jaws to define the length of the cut section.

Description

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  The invention relates to an assembly for cutting an elongate material, sections of a predetermined length, such as trunnions, stakes, of the type comprising a device for swivel jaw pliers and means for establishing the length. sections to be cut. In assemblies of this type which are known, the gripper device and the means for determining the length of the sections to be cut are produced in the form of separate devices. Consequently, cutting the sections requires a relatively large number of gestures, which makes the work complicated and slows down the

work rate.

  The object of the present invention is to propose an assembly which overcomes the drawbacks which have just been stated. To achieve this goal, an assembly according to the invention

  is characterized in that the means for determining the length of the sections to be cut are integrated into the clamp device 20.

  According to a characteristic of the invention, means for determining the length of the sections comprise a stop associated with the clamp device, at a distance from the cutting plane of the jaws, which corresponds to the length 25 of the sections to be cut and against which the material to be cut comes into abutment when it is engaged between the jaws. According to another characteristic of the invention, a

  device for chamfering the ends of the cut sections 30 is integrated into the cutting assembly.

  According to yet another characteristic of the invention, a cutting jaw comprises at least one impression of

  cutting, adapted to the diameter of the material to be cut.

  According to yet another characteristic of the invention, the jaw comprises a plurality of cutting impressions.

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  According to yet another characteristic of the invention, the assembly comprises an anvil mounted on a jaw of

  the forceps, this anvil comprising the cutting impressions.

  According to yet another characteristic of the invention, the aforementioned stop is movably mounted on a support rail fixed to a jaw so as to extend

perpendicular to it.

  According to yet another characteristic of the invention,

  the rail includes a graduation rule making it possible to determine the distance from the stop of the cutting plane.

  According to yet another characteristic of the invention, the support rail is fixed to the jaw on which is

climb the anvil.

  According to yet another characteristic of the invention, the chamfering device is of the pencil sharpener type and

secured to the anvil.

  According to yet another characteristic of the invention,

  the anvil and the chamfering device are made in one piece, the chamfering device being provided at the end of the anvil which protrudes from the clamp.

  The invention will be better understood, and other aims,

  characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a

  embodiment and in which: - Figure 1 is a perspective view of a section cutting assembly according to the invention; FIG. 2 is an enlarged view of the section part of the assembly of FIG. 1; - Figure 3 is a perspective view of the cutting portion of the assembly of Figure 1, seen from another side; - Figure 4 is a perspective view of a section cut using the assembly according to the invention, and - Figure 5 shows the section of Figure 4 after

the chamfering operation.

  As shown in FIG. 1, an assembly according to the invention, for cutting sections of predetermined length, essentially comprises a device forming a clamp 1, a device 2 for determining the length of the sections to be cut and a device 3 for

  chamfer integrated in the clamp 1. Figure 1 shows in 4 a piece of elongated material from which sections must be cut. In the example shown, the elongate or filiform material is in the form of a rod with a circular cross section.

  The gripper device 1 has the usual general structure of a gripper, that is to say comprises two elongated elements 6, 7, each in the form of a lever with two arms which are mounted to pivot about a common axis 8 15 defining front arms 9 and 10 configured as cutting jaws and two actuating arms configured as handles 11 and 12. A torsion spring, not shown, is provided and intended to push the actuating arms 11, 12 back into their position opening the cutting jaws 9 and 10. This spring is advantageously produced in the form of a torsion spring which is mounted around the pivot axis 8 and the ends of which bear on the internal faces of the arms

11 and 12.

  One of the elongate elements, namely the element 6, has a U-shaped cross section, both at its actuating arm 12 and at its jaw arm 9, while the other element 7 is formed by two portions, a cross-sectional portion in the shape of a U which constitutes the actuating arm 11 and a portion forming the jaw 10 produced in the form of a blade, the front part of which is configured as a cutting edge 14. The blade part 10 is mounted fixed between the two branches of the

  U-shaped profile of the handle arm 11.

  The jaw part 9 of the other clamp element 12 has a U-shaped profile only the two lateral branches denoted 15. On the jaw 9 which constitutes the lower jaw of the clamp is mounted an anvil 16 profiled in T whose part median 17 engages between the two branches 15 of the jaw. The transverse upper part 18 of the anvil covers the upper edges of the branches 15 of the jaw 9 and is thus located opposite the cutting edge 14 of the forceps. In the upper face 19 of the anvil 16 facing the edge 14, a slot 21 is made in which the cutting edge 14 engages. The upper surface 19 of the anvil constitutes the bearing face of the material to be cut. In this face 19 10 are provided several imprints 20 of different sizes, which are offset in the direction of the axis of the anvil and adapted to several types of material to be cut. Since the materials are generally of circular cross section and are therefore distinguished by their diameter, the indentations 20 are in the form of circular arcs of different diameter adapted to the diameter of the rods constituting the material to be cut 4. The indentation of the largest diameter is closest to the axis

hinge 8.

  The front part 22 of the anvil 15 is configured as a chamfering device which is of the pencil sharpener type, as can be clearly seen in FIG. 3. This device makes it possible to produce on the end of a cut section, having the flat cutting surface 24 of FIG. 4 the chamfer 25 illustrated in FIG. 5. To make this chamfer, it suffices to introduce the tip 24 into the opening 26 of the chamfering device, which opens downwards, that is to say perpendicular to the face

support 18 of the anvil.

  The device 2 for determining the length of the sections to be cut comprises, as can be clearly seen in the figures, a rail 28 for supporting a stop 30, which is fixed to the lower jaw 9 carrying the anvil 16 and s 'extends perpendicularly from it. To allow the rail to be fixed, the latter comprises at its end for fixing to the jaw 9 a flange 38 which extends perpendicular to the axis of the rail. For mounting

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  on the jaw, the flange is pressed against the outer face of one of the two branches 15 of the jaw and can be fixed in this position using a screw 40 which passes through the jaw, is supported by its head 41 on the flange and on the free end emerging from the other branch 15 is screwed a tightening nut 42. This nut is preferably a wing nut. It should be noted that the rail can be mounted either on one or the other of the two branches 15 of the jaw 9. Thus the device 2 to 10 length cutting strip can be positioned so as to

  allow ambidextrous use.

  The stop 30 is adjustable in position on the upper surface of the rail 28 at adjustable distances from the cutting plane, that is to say from the cutting edge 14 of the pliers. The stop extends perpendicular to the cutting plane. It is placed so that the rods to be cut 4 when they are engaged in the clamp while resting in the appropriate cavity 20 come to bear by their free face against the stop. Consequently, the distance from the stopper 30, from the cutting plane 20 is equal to the section that the clamp allows to

cut from the stem.

  The stop 30 is fixed to a trolley element 32 in the form of a U mounted sliding on the rail 28. The trolley can be stopped in a desired position using a clamping means provided with a button. 'rotary actuation 34. The upper face of the rail 28 is provided with a graduation indicated at 36, which allows precise positioning of the stop 30 and thus the determination of the

  length of the sections to be cut from the rod 4.

  The invention makes it possible to cut sections of predetermined and variable length from materials of any suitable nature, such as trunnions, cables, pipes, stakes, sheaths. The cutting assembly according to the invention has the advantage of being produced in the form of a tool 35 in which are integrated the means making it possible to perform the three necessary functions, namely the cutting functions, determining the length of cut sections

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  and chamfering the ends of the sections. Thanks to the graduation, the invention makes it possible to establish the length of

cut to the desired value.

  It should be noted that the material to be cut, advantageously in the form of a rod, may have a section

  transverse of any shape other than that of the circular shape and, where appropriate, the imprints can be of shape complementary to the shape of the material to be cut. The anvils could be configured so that they are removable and exchangeable.

Claims (15)

  1. An assembly for cutting an elongated material, in particular rods, sections of a predetermined length, of the type comprising a clamp device with pivoting jaws and means for establishing the length of the sections to be cut, characterized in that the means (2) for determining the length of the sections comprise a stop (30) associated with the clamp device (1), which is disposed at a distance from the cutting plane of the jaws (9, 10), corresponding to the length of the sections 10 to be cut, and against which the material to be cut comes in   stop when engaged between the jaws (9, 10).   2. Cutting assembly according to claim 1,   characterized in that a chamfering device (3) of the ends of the cut sections is integrated into the cutting assembly.   3. Cutting assembly according to one of claims 1 to   2, characterized in that a jaw (9) of the clamp (1) comprises at least one imprint (20) for receiving the material to be cut (4).   4. Cutting assembly according to claim 3, characterized in that the jaw (9) has a plurality of cutting impressions (20).   5. Cutting assembly according to one of claims 1 to   4, characterized in that an anvil (16) is mounted on a jaw (9) of the clamp, this anvil comprising the cutting impressions (20).   6. Cutting assembly according to one of claims 1 to   4, characterized in that the stop (30) is movably mounted on a support rail (28) fixed to a jaw (9) so as to extend perpendicular thereto.   7. Cutting assembly according to claim 6, characterized in that the support rail (28) has a graduation (36) making it possible to determine the distance from the   stop (30) of the cutting plane of the pliers.   8. Cutting assembly according to claim 7, characterized in that the rail (28) is fixed on a carriage   (32) slidingly mounted on the support rail.   9. Cutting assembly according to one of claims 6 to 5 8, characterized in that the support rail (28) is fixed to   the jaw (9) on which the anvil (16) is mounted.   10. Cutting assembly according to one of claims 2   to 9, characterized in that the chamfering device (3)   is of the pencil sharpener type and integral with the anvil (16).   11. Cutting assembly according to claim 10, characterized in that the anvil (16) and the chamfering device (30) are made in one piece, the chamfering device being provided at the end of the anvil which protrudes from the clamp (1).   12. Cutting assembly according to one of claims 4   11, characterized in that the cavity (20) intended for positioning the material to be cut of the largest diameter   is arranged as close as possible to the axis of articulation (8).   13. Cutting assembly according to one of claims 6 20 to 12, characterized in that the support rail (28) is   capable of being fixed on one or the other external face of the jaw (9) of the clamp device (1) to allow   ambidextrous use of the device (2).   14. Cutting assembly according to claim 13, characterized in that the rail (28) for supporting the stop (30) comprises at its end for fixing to the jaw (9) a transverse fixing flange (38) intended to come to bear against the external mounting face of the jaw (9), and that a screw (40) for clamping the flange (38) in this position is provided, which crosses transversely the   jaw (9) and is provided with a clamping nut (42).   15. Cutting assembly according to one of claims 1   14, characterized in that one (9) of the jaws is configured as a cutting jaw while the other (10) 35 jaw is configured as a support jaw on which   rests the material to be cut during cutting.