Application head comprising movable cutting system and clamping system

Abstract

An application head, comprising an application system, guiding means defining a guiding plane, a cutting system comprising a first cutting tool movable in translation and a second cutting tool, and a clamping system comprising a first clamping tool movable in translation and a second clamping tool. A first control means is able to displace the cutting tools together between initial and final cutting positions representing a variation in distance along the guiding plane and a second control means is able to displace the clamping tools together between initial and final clamping positions representing a variation in distance along the guiding plane.

Claims

1. Application head especially designed for producing composite material parts, comprising an application system, guiding means defining a guiding plane, a cutting system and a clamping system, the cutting system comprising a first cutting tool movable in translation along a cutting direction and a second cutting tool, the clamping system comprising a first clamping tool movable in translation along a clamping direction and a second clamping tool, comprising a first control means able to displace said cutting tools together between initial and final cutting positions representing a variation in distance along the guiding plane and comprising a second control means, distinct from the first control means, able to displace said clamping tools together between initial and final clamping positions representing a variation in distance along the guiding plane.

2. Application head according to claim 1, wherein said first control means is an integrated control means able to displace the first cutting tool along the cutting direction and to displace together said cutting tools between said initial and final positions.

3. Application head according to claim 2, wherein the integrated control means is able to displace the first cutting tool and the second cutting tool in translation along the cutting direction between inactive positions and active positions.

4. Application head according to claim 3, wherein the integrated control means comprises a control lever movable around a first rotation axis and provided with a first lever arm articulated to a first tool holder carrying the first cutting tool and a second lever arm articulated, by means of a link, to a second tool holder carrying the second cutting tool, said second lever arm being controlled in displacement by a cylinder rod, said first blade holder being articulated to a second rotation axis by means of a link and said first and second tool holders being connected together by a sliding connecting means for sliding along the cutting direction.

5. An application head according to claim 1, wherein the first cutting tool comprises a first blade provided with a bevel defining a first cutting edge and the second cutting tool comprises a second blade provided with a bevel defining a second cutting edge, said bevels being opposed to allow an overlapping of said cutting edges.

6. Application head according to claim 1, wherein said second control means for the clamping tools is a control means for controlling in translation along the guide plane.

7. Application head according to claim 1, wherein the clamping system comprises a third control means able to displace a first clamping tool along a clamping direction.

8. Application head according to claim 7, wherein the first and second clamping tools are both movable along the clamping direction between respective inactive positions and active positions, said third control means being able to displace the first clamping tool and the second clamping tool in translation along the cutting direction between the inactive positions and the active positions.

9. An application head according to claim 8, wherein it comprises stripper means fixed along the clamping direction in positions with respect to which said respective inactive positions of the clamping tools are set back.

10. Application head according to claim 9, wherein said second control means able to displace said clamping tools together is also able to displace the stripper means in translation along the guide plane.

11. Method for manufacturing a composite material part comprising the application of continuous fibers to an application surface, wherein the application of fibers is carried out by means of a fiber application head according to claim 1, by relative displacement of the application head with respect to the layup surface along layup trajectories.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic view of an application head according to a first embodiment of the invention, illustrating a cutting system and a clamping system in initial positions along a guiding plane.

(2) FIG. 2 is a schematic view of the application head, in which the cutting tools of the cutting system have displaced into an end position in the guiding plane.

(3) FIG. 3 is a schematic view of the application head, in which the clamping tools of the clamping system have displaced to an end position in the guiding plane.

(4) FIG. 4 is a schematic view of the application head, in which the cutting tools of the cutting system are again in the initial position in the guiding plane.

(5) FIG. 5 is a schematic view of the cutting system, showing the cutting tools in the initial position along the guide plane and in two inactive positions along the cutting direction.

(6) FIG. 6 is a schematic view of the cutting system, showing the cutting tools in the end position along the guiding plane and in two active positions along the cutting direction.

(7) FIG. 7 is a schematic view of the clamping system, showing the clamping tools in the initial position along the guiding plane and in two inactive positions along a clamping direction.

(8) FIG. 8 is a schematic view of the clamping system, showing the clamping tools in the initial position along the guide plane and in two active positions along the clamping direction.

(9) FIG. 9 is a schematic view of the clamping system, showing the clamping tools in the end position along the guide plane and in the active positions along the clamping direction.

(10) FIG. 10 is a schematic view of the clamping system, showing the clamping tools in the end position along the guiding plane and in the inactive positions along the clamping direction.

(11) FIG. 11 is an enlarged partial view of the cutting system in FIG. 5.

(12) FIG. 12 is an enlarged partial view of the cutting system in FIG. 6.

(13) FIG. 13 is an enlarged top view of the cutting system in FIG. 5.

(14) FIG. 14 is an enlargement of the cutting means shown in FIG. 6, in top view.

(15) FIG. 15 is a schematic view of the clamping system in a variant embodiment, showing the clamping tools in the initial position along the guiding plane and in the inactive positions along the clamping direction.

(16) FIG. 16 is a schematic view of the clamping system, showing the clamping tools in the initial position along the guiding plane and in the active positions in the clamping direction.

DETAILED DESCRIPTION

(17) According to a first embodiment of the invention, illustrated by FIGS. 1 to 14, an application head comprises an application roller 1, and for each fiber, guiding means 3 defining a guiding plane P for guiding the fiber entering into the head along a guiding plane towards the roller, a cutting system 5 and a clamping system 7. The guiding means of a fiber are for example formed by a guiding channel formed at the assembly interface of two plates, the guiding plane corresponding to a median longitudinal plane of the channel. When the head is intended for the application of a strip of several fibers, the head comprises a guiding channel for each fiber and a cutting system for each fiber, and may comprise a single roller for applying all the fibers, or several rollers, for example one roller for each fiber. Other guiding means may include tube sections or one or more pulleys.

(18) The cutting system 5 comprises first and second cutting tools 51, 53 movable in translation along a cutting direction T.sub.c between two inactive positions κ.sub.1, κ.sub.3 and two active positions κ.sub.2, κ.sub.4. The cutting tools 51, 53 are movable together and displaced by a first control means 6 between an initial cutting position ψ.sub.1 and a final cutting position ψ.sub.2 representing a variation in distance along the guiding plane P.

(19) The first control means 6 is an integrated control means able to displace the first and second cutting tools 51, 53 in translation along the cutting direction T.sub.c and to displace them together between the initial cutting position ψ.sub.1 and final cutting position ψ.sub.2, in rotation around a direction parallel to the axis 11 of the application roller 1, the integrated control means being adapted to displace the cutting tools between their inactive and initial positions and their active and final positions.

(20) The integrated control means 6 comprise a control lever 61 movable around a first rotation axis A.sub.1 and provided with a first lever arm 63 and a second lever arm 65, 66. A first blade holder 57 carrying the first blade 51 is articulated to the first lever arm 63. A second blade holder 59 carrying the second blade 53 is articulated to the second lever arm 65, 66 by means of a link 69. The lever 61 is controlled in displacement by the rod 67 of a cylinder, articulated to the second lever arm 65, 66. The first blade holder 57 is articulated to a second rotation axis A.sub.2 by means of a link 60 and the first and second blade holders 57, 59 being connected to each other by a sliding connecting means 68 for sliding along the cutting direction.

(21) The rotation axes A.sub.1 and A.sub.2 are fixed with respect to a support structure of the application head, the cylinder being fixedly mounted by its cylinder body to the support structure. It should be noted that the connection between the cylinder rod 67 and the intermediate link 66 can have a clearance, for example in the form of an oblong slot. Alternatively, the cylinder is mounted with a clearance with respect to the mounting support structure.

(22) The rotation axes A.sub.1 and A.sub.2 are parallel to the guiding plane P and the rotation axis 11 of the compaction roller. In reference to FIG. 5, the first lever arm 63 is articulated by its end to the first blade holder 57 around a pivot axis A.sub.3, and the second lever arm is articulated by its end to the cylinder rod around a pivot axis A.sub.4, the two lever arms forming an angle between them, the axes A.sub.1, A.sub.3 and A.sub.4 being not contained in a same plane. The link 69 is articulated by a first end to the second blade holder 59 around a pivot axis A.sub.5 and by its second end to the second lever arm around a pivoting axis A.sub.6, this pivot axis A.sub.6 being arranged between axis A.sub.1 and axis A.sub.4, on the side of the plane passing through axis A.sub.1 and axis A.sub.4 which is opposite to axis A.sub.5. In the present embodiment shown in the FIGS., the axis A.sub.1, A.sub.3 and A.sub.6 are aligned, contained in the same plane, and the distance between the axes A.sub.1 and A.sub.3 is equal to the distance between the axes A.sub.1 and A.sub.6. The rotation axis A.sub.2 is arranged on the side of the plane passing through the axes A.sub.1 and A.sub.3 which is opposite to the blades and to the axis A.sub.5, the link 60 being articulated at one end around the fixed axis A.sub.2 and at the other end to the first blade holder around a pivot axis A.sub.7 which is arranged on the same side of the plane passing through the axes A.sub.1 and A.sub.3 as the axis A.sub.2. The pivot axes A.sub.3-A.sub.7 are parallel to the rotation axes A.sub.1 and A.sub.2.

(23) The clamping system 7 comprises first and second clamping tools 71, 73 movable along a clamping direction T.sub.b between two inactive positions θ.sub.1, θ.sub.3 and two active positions θ.sub.2, θ.sub.4 in which they abut against each other. The clamping tools comprise a first and a second jaw. A control means 8 is able to displace the first and second clamping tools 71, 73 in translation along the clamping direction T.sub.b. It comprises a cylinder 81 actuating a cylinder rod 83 cooperating with the first and second clamping tools 71, 73 by means of a transmission cone 85.

(24) The clamping tools 71, 73 are movable together in translation between an initial clamping position β.sub.1 and a final clamping position β.sub.2 representing a variation in distance along the guiding plane P. They are displaced by a second control means 10 comprising a cylinder 101 actuating a cylinder rod 103 able to displace the cylinder 81 of the second control means 8.

(25) Stripper means 41, 43 are fixed in relation to a structure used as support for the mounting of the application head, and are therefore fixed in relation to each other in the clamping direction T.sub.b. The inactive positions θ.sub.1, θ.sub.3 of the first and second clamping tools 71, 73 are set back along the clamping direction T.sub.b with respect to the fixed positions of the stripper means 41, 43. The stripper means 41, 43 are movable with the clamping tools 71, 73 in translation along the guiding plane and controlled in displacement by the control means 10.

(26) The application head also comprises rerouting means 9. The latter comprise a first roller 91 and a second roller 93 whose rotation axes 95 and 97 are aligned along a direction R away from the rotation axis 11 of application roller 1. The rerouting means 9 have a fixed position with respect to the application roller 1, between the cutting tools 51, 53 on the one hand and the clamping tools 71, 73 on the other hand.

(27) FIG. 1, the two cutting tools 51, 53 are in their initial position ψ.sub.1 in which the distance along the guiding plane P between the cutting direction T.sub.c and the fixed position of rerouting means is equal to D.sub.1. Similarly, the two clamping tools 71, 73 are in their initial position β.sub.1 in which the distance along the guiding plane P between the clamping direction T.sub.b and the fixed position of the rerouting means is equal to Δ.sub.1. Along the cutting direction T.sub.c, the cutting tools 51, 53 are in their inactive positions κ.sub.1, κ.sub.3. Along the clamping direction T.sub.b, the clamping tools 71, 73 are in their inactive positions θ.sub.1, θ.sub.3.

(28) FIG. 2, the two cutting tools 51, 53 have displaced together to their final position ψ.sub.2 in which the distance along the guiding plane P between the cutting direction T.sub.c and the fixed position of the rerouting means is equal to D.sub.2. The two clamping tools 71, 73 have remained in the initial position β.sub.1 shown in FIG. 1. Along the cutting direction T.sub.c, the cutting tools 51, 53 have displaced into their active positions κ.sub.2, κ.sub.4. Along the clamping direction T.sub.b, the clamping tools 71, 73 have displaced into their active positions θ.sub.2, θ.sub.4.

(29) FIG. 3, the two cutting tools 51, 53 have remained in their final position ψ.sub.2 as shown in FIG. 2. The two clamping tools 71, 73 have displaced together into their final position β.sub.2 for which the distance along the guiding plane between the clamping direction T.sub.b and the fixed position of the rerouting means is equal to Δ.sub.2.

(30) FIG. 4, the two cutting tools 51, 53 have displaced together to their initial position ψ.sub.1 shown in FIG. 1. The two clamping tools 71, 73 have remained in their final position β.sub.2 shown in FIG. 3. Along the cutting direction T.sub.c, the cutting tools 51, 53 have displaced to their inactive positions κ.sub.1, κ.sub.3.

(31) The initial distances D.sub.1 and Δ.sub.1 are smaller than the final distances D.sub.2 and Δ.sub.2. Thus, the initial and final cutting positions ψ.sub.1, ψ.sub.2 represent a positive variation of distance D.sub.2-D.sub.1 along the guiding plane P and the initial and final clamping position β.sub.1, β.sub.2 represent a positive variation of distance Δ.sub.2-Δ.sub.1 along the guiding plane P.

(32) It is important to note that the direction R of the rerouting means is an arbitrary reference for the distances D.sub.1, Δ.sub.1, D.sub.2 and Δ.sub.2. The direction perpendicular to the guiding plane P and passing through axis 11 of the application roller 1 is another arbitrary reference for locating the distances. It is sufficient that the reference direction is perpendicular to the guiding plane and has a fixed position in the application head.

(33) FIG. 5, the two cutting tools 51, 53 are in their initial position 1 in which the distance along the guiding plane P between the cutting direction T.sub.c and the fixed position of rerouting means is equal to D.sub.1. The tools 51, 53 are in the inactive positions κ.sub.1, κ.sub.3 along the cutting direction T.sub.c. The cutting direction T.sub.c makes an angle α.sub.1 with the direction passing through the rotation axes A.sub.1 and A.sub.2. This angle as well as the inactive positions κ.sub.1, κ.sub.3 in cutting direction T.sub.c are determined by the angular orientation of the control lever 61, itself determined by the retracted position of the cylinder rod 67.

(34) FIG. 6, the two cutting tools 51, 53 have displaced to their end position ψ.sub.2 for which the distance along the guiding plane P between the cutting direction T.sub.c and the fixed position of the rerouting means is equal to D.sub.2. The tools 51, 53 have also displaced into the active positions κ.sub.2, κ.sub.4 along the cutting direction T.sub.c. The cutting direction T.sub.c makes an angle α.sub.2 with the direction passing through the rotation axes A.sub.1 and A.sub.2. This angle and the active positions κ.sub.2, κ.sub.4 along the cutting direction T.sub.c are determined by the angular orientation of the control lever 61, itself determined by the extended position of the cylinder rod 67.

(35) In either of the angles α.sub.1, α.sub.2 taken by the cutting direction T.sub.c, the cutting tools 51, 53 remain aligned along the direction, which is ensured by the sliding connection means 68.

(36) FIG. 7, the two clamping tools 71, 73 are in their initial position β.sub.1 in which the distance along the guiding plane P between the clamping direction T.sub.b and the fixed position of the rerouting means is Δ.sub.1. The tools are in their inactive positions θ.sub.1, θ.sub.3 along the clamping direction T.sub.b, set back from the positions τ.sub.1, τ.sub.3 of the stripper means 41, 43. The setback is due to the fact that the distance δ between the stripper means is less than the distance Δ between the inactive positions θ.sub.1, θ.sub.3 of the clamping tools 71, 73 along the clamping direction T.sub.b. The stripper means comprise a first stripping plate 41 with a through hole 411 for the passage of the first clamping tool 71 and a second stripping plate 43 with a through hole 431 for the passage of the second clamping tool 73. The two stripping plates, which are parallel to each other, are fixedly mounted on the cylinder body, the two facing surfaces of the stripping plates are in the positions τ.sub.1, τ.sub.3 and are spaced from each other by the distance δ.

(37) FIG. 8, the two clamping tools 71, 73 have remained in the initial position β.sub.1 shown in FIG. 1 but have displaced, along the clamping direction T.sub.b, from their inactive positions θ.sub.1, θ.sub.3 to the active positions θ.sub.2, θ.sub.4 in which they abut against each other.

(38) FIG. 9, the two clamping tools 71, 73 have displaced into their final position β.sub.2 for which the distance along the guiding plane between the clamping direction T.sub.b and the fixed position of the rerouting means is Δ.sub.2. The stripper means 41, 43 have also displaced as a unit with the clamping tools 71, 73 in translation along the guiding plane P.

(39) In FIG. 10, the two clamping tools 71, 73 have remained in the end position β.sub.2 shown in FIG. 9, but have displaced, along the clamping direction T.sub.b, from their active positions to inactive positions θ.sub.1, θ.sub.3 in which they are set back from the positions τ.sub.1, τ.sub.3 of the stripper means 41, 43.

(40) In the above-described embodiment, the first cutting tool 51 comprises a first blade provided with a bevel 56 defining a first cutting edge 52 and the second cutting tool 53 comprises a second blade provided with a bevel 58 and defining a second cutting edge 54. The first and second cutting edges 52, 54 form between them a cutting angle ϕ and the bevels 56, 58 are opposed to allow an overlapping of the cutting edges 52, 54 and propagate a cutting point at the apex of the cutting angle ϕ, during a time interval defined by an initial instant and an end instant, corresponding respectively to the inactive positions κ.sub.1, κ.sub.3 and the active positions κ.sub.2, κ.sub.4 of the blades 51, 53 along the cutting direction T.sub.c.

(41) The first blade 51 is fixed to a first blade holder 57. The second blade 53 is fixed to a second blade holder 59 by means of a part 55 pivoting relative to the second blade holder 59 around an axis 50 and is pressed against the first blade holder 57 by an elastic return means to control the clearance necessary for the overlapping of the cutting edges 52, 54 of the blades 51, 53. The elastic return means is, for example, a spring mounted around a screw 4 passing through the intermediate part 55 to be screwed into the second blade holder 59, the spring being arranged between the screw head and the intermediate part. According to an embodiment variant, the second blade is elastically biased in abutment directly against the first blade, either flat or by its cutting edge against the first blade, for example according to the mounting principle described in the above-mentioned application WO 2017/072421.

(42) Referring to FIGS. 11 and 13, the first and second blades 51, 53 are in their inactive positions κ.sub.1, κ.sub.3 along the cutting direction T.sub.c. The apex of the cutting angle ϕ is in an initial position S.sub.1 determined by the inactive positions κ.sub.1, κ.sub.3 in which the cutting edges 52, 54 of the bevels 56, 58 are not overlapped.

(43) Referring to FIGS. 12 and 14, the first and second blades 51, 53 have displaced into their active positions κ.sub.2, κ.sub.4 in the cutting direction T.sub.c. The apex of the cutting angle ϕ is in an end position S.sub.2 determined by the active positions κ.sub.2, κ.sub.4 in which the cutting edges 52, 54 of the bevels 56, 58 are overlapped.

(44) Between the inactive positions κ.sub.1, κ.sub.3 and active positions κ.sub.2, κ.sub.4, the apex S.sub.1, S.sub.2 of the cutting angle ϕ has propagated as the overlapping of the cutting edges 52, 54 has increased.

(45) The cutting edges 52, 54 are rectilinear and form a constant cutting angle ϕ, from the inactive positions κ.sub.1, κ.sub.3 to the active positions κ.sub.2. The bisector of the cutting angle ϕ is perpendicular to the cutting direction T.sub.c. In FIGS. 13 and 14, the inactive positions κ.sub.1, κ.sub.3 and the active positions κ.sub.2, κ.sub.4 are advantageously chosen symmetrically with respect to the guiding plane P so that the bisector of the cutting angle ϕ is coincident with the guiding plane P.

(46) An alternative embodiment of the control means 8 of the clamping means 71, 73 is that the rod 83 of the cylinder 81 cooperates with the first and second clamping means 71, 73 by means of first and second levers 87, 89 articulated to the clamping means. The cylinder 81 is a parallel gripper type cylinder. It advantageously enables multiplication of the clamping forces. Referring to FIG. 15, the rod 83 is in retracted position θ.sub.1, θ.sub.3 and controls the clamping means 71, 73 in their inactive positions along the clamping direction T.sub.b. Referring to FIG. 16, the rod 83 is in an extended position and controls the clamping means 71, 73 in their active positions θ.sub.2, θ.sub.4 along the clamping direction T.sub.b.

(47) A second embodiment of the invention differs from the previous one in that the first control means for the cutting tools 51, 53 is a control means for controlling in translation along the guiding plane P. This control means is analogous to the control means 10 for the first and second clamping tools in block, in translation along the guiding plane and described with reference to FIGS. 7 to 10.

(48) A means able to displace the cutting tools 51, 53 one and the other in the cutting direction T.sub.c between the respective inactive positions κ.sub.1, κ.sub.3 and active positions κ.sub.2, κ.sub.4 comprises a cylinder actuating a cylinder rod cooperating with the cutting tools via a transmission cone or via first and second levers connected respectively to the first and second cutting tools. It is analogous to control means 8 of the first and second clamping tools for controlling in translation along the clamping direction and is described with reference to FIGS. 7 to 10 or FIGS. 15 to 16.

(49) The application head according to embodiments of the invention is especially designed for installation in a fiber placement machine for the production of composite material parts.

(50) A fiber 2 is applied to a substrate (not shown) by the application roller 1 as the application head displaces relative to the substrate. The fiber is guided by the guiding means in the guiding plane P.

(51) A “cut on the fly” operation comprises the following steps: first step: FIG. 1, during layup, the fiber 2 circulates freely through the cutting tools 51, 53 and the clamping tools 71, 73. The inactive positions κ.sub.1, κ.sub.3 of the cutting means, FIG. 5, define a rest state along the cutting direction T.sub.c. Likewise, the inactive positions θ.sub.1, θ.sub.3 of the clamping means, FIG. 7 define a rest state along the clamping direction T.sub.b. second step: FIG. 2, the fiber 2 is cut by the cutting tools 51, 53 and clamped by the clamping tools 71, 73. The active positions κ.sub.2, κ.sub.4 of the cutting tools, FIG. 6, define an active state along the cutting direction T.sub.c. Likewise, the active positions θ.sub.2, θ.sub.4 of the clamping tools, FIG. 8, define an active state in the clamping direction T.sub.b.

(52) Between the first and second steps, the cutting tools 51, 53 have undergone, along the guiding plane P, the positive variation in distance D.sub.2-D.sub.1. This variation makes it possible to displace the cutting direction T.sub.c at the same time as fiber 2 and thus leads to cancelling the inclination of the cut end of the fiber.

(53) The inactive positions κ.sub.1, κ.sub.3 along the cutting direction T.sub.c are symmetrical with respect to the guiding plane P and the cutting tools 51, 53 are displaced towards their active positions κ.sub.2, κ.sub.4 at the same translation speed. Thus it is possible to cut the fiber 2 “in the middle”, that is without deviation from the guiding plane P.

(54) Likewise, the inactive positions θ.sub.1, θ.sub.3 along the clamping direction T.sub.b are symmetrical with respect to the guiding plane P and the clamping tools 71, 73 are displaced towards their active positions θ.sub.2, θ.sub.4 at an identical translation speed. Thus, it is possible to clamp the fiber 2 “in the middle”, that is, without deviation from the guiding plane P. third step: FIG. 3, the cutting tools 51, 53 remain in the active state. Similarly, the clamping tools 71, 73 remain in the active state.

(55) Between the second and third steps, the clamping tools 71, 73 have undergone the positive variation in distance Δ.sub.2-Δ.sub.1 along the guiding plane P. This variation makes it possible to displace the cut and clamped fiber 2 in the opposite direction to the travel direction imposed by the rotation direction of the application roller 1. fourth step: FIG. 4, the cutting tools 51, 53 are again in the resting state. The clamping tools 71, 73 remain in the active state.

(56) Between the third and fourth steps, the cutting tools 51, 53 have undergone, along the guiding plane P, the negative variation in distance D.sub.1-D.sub.2. The variation in distance Δ.sub.2-Δ.sub.1 of the clamping tools 71, 73 is chosen to be greater than the variation of distance D.sub.2-D.sub.1 of the cutting tools to allow the latter to return to the distance D.sub.1 of the rerouting means 9 without the risk of coming into contact with the fiber 2. fifth step: the clamping tools 71, 73 are again in the resting state. The cutting tools 51, 53 remain in the resting state. The fiber 2 circulates freely after it has been rerouted by the rerouting means.

(57) Between the fifth step and the first step of the next on-the-fly cut, the clamping tools 71, 73 are subjected to the negative variation in distance Δ.sub.1-Δ.sub.2 along the guiding plane P.

(58) The “on-the-fly” cutting operation described above can be carried out with an application head in which only one of the two cutting tools is movable in translation along the cutting direction, the other tool being in a fixed position along the direction. For example, WO 2008/132301 describes a movable blade coming, in the active position, into abutment against a counter-tool fixed along the cutting direction, formed of a bar made of elastomeric material.

(59) Similarly, the “on-the-fly” cutting operation can be carried out with an application head in which only one of the two clamping tools is movable in translation in the clamping direction, the other tool being in a fixed position along the clamping direction. WO 2008/132301 or EP 846551 describes a movable jaw which, in the active position, abuts against a counter tool which is fixed along the clamping direction.