FIBER DRAPING HEAD

The fiber draping head's innovative design allows deposition on chamfers beyond 45° by positioning the roller under a perpendicular plane to the distributor, addressing the collision issue and expanding the applicability of automated fiber placement processes.

FR3151524A1Pending Publication Date: 2025-01-31SAFRAN NACELLES
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Patent Information

Application Number
FR2023007951
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-07-24
Publication Date
2025-01-31

AI Technical Summary

Technical Problem

Existing fiber draping heads are unable to efficiently deposit fibers on structures with chamfers exceeding 45° due to collisions between the distributor and the reception structure, limiting the applicability of automated fiber placement processes.

Method used

A fiber draping head design with a roller positioned under a perpendicular plane to the distributor's longitudinal slit, connected by a support arm extending perpendicular to the roller's axis, allowing the roller to be remotely located from the distributor, thus reducing head size and enabling access to chamfers.

Benefits of technology

Enables the deposition of fibers on chamfers with angles beyond 45°, enhancing the applicability of automated fiber placement processes for complex geometries.

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Abstract

The invention relates to a draping head comprising: - a fiber distributor (109) (101) having a longitudinal slot (109c) through which fibers (101) are intended to be distributed, - at least one roller (110) for applying the fibers (101) distributed by the distributor (109), this roller (110) having a first axis (X1) and being rotatable about the first axis (X1) which is parallel to said longitudinal slot (109c), and - a support (111) for the roller (110) comprising a first arm (111a) connecting the roller (110) to a body (108) of the draping head (107), the first arm (111a) extending along a second axis (X2) perpendicular to the first axis (X1) of the roller (110), characterized in that the roller (110) is entirely located under a plane (P) perpendicular to the second axis (X2) of the first arm (111a) and passing through the longitudinal slot (109c) of the distributor (109). Abbreviated figure: Figure 4
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Description

Title of the invention: FIBER DRAPING HEAD Technical field of the invention

[0001] The invention relates to the field of fiber draping.

[0002] Fiber draping is particularly used for the manufacture of parts in an automatic fiber draping process.

[0003] An automatic fiber draping method may be an automatic fiber placement method, also known by the acronym AFP (for "Automated Fiber Placement" in English), or an automatic fiber tape placement method, also known by the acronym ATL (for "Automated Tape Laying" in English). Technical background

[0004] A turbomachine for an aircraft typically comprises, from upstream to downstream in the direction of gas flow along a longitudinal axis of the turbomachine, a fan, a low-pressure compressor, a high-pressure compressor, an annular combustion chamber, a high-pressure turbine and a low-pressure turbine. The turbomachine further comprises an annular nacelle extending around the fan and up to the low-pressure turbine.

[0005] Turbomachines are a significant source of noise pollution and there is a strong demand to reduce this type of pollution. To this end, it has been proposed, for example, to equip the turbomachine, such as the nacelle, with acoustic panels in order to reduce the noise generated by the turbomachines.

[0006] An acoustic panel typically comprises a sandwich structure comprising inner and outer skins between which is arranged a core having a honeycomb structure intended to absorb sound waves.

[0007] The inner and / or outer skins of such an acoustic panel often comprise organic matrix composite materials, also known by the acronym CMO. Such composite materials typically comprise an organic matrix chosen for example from thermoplastic or thermosetting polymers and fibers embedded in the matrix. The fibers are for example carbon, aramid, or glass fibers.

[0008] The inner and / or outer skins are manufactured directly on the core by automated draping processes, for example by an automatic fiber placement process, also known by the English acronym AFP for "Automated Fiber Placement" or an automatic fiber tape placement process, also known by the English acronym ATL for "Automated Tape Laying". Compared to manual draping processes, these automated processes allow rapid panel manufacturing and therefore the manufacturing of these panels on an industrial scale at high speed, and reduce the variability of manufacturing ranges.

[0009] These automated methods implement a fiber draping installation comprising a draping head and a robot carrying the draping head. The draping head typically comprises a fiber dispenser and a roller for applying the fibers to a receiving structure. The fiber dispenser has an outlet end in which a slot is formed through which the fibers are distributed and guided to the roller. The roller allows the application of the fibers distributed by the dispenser to the receiving structure. The draping head further comprises a roller support connecting the draping head to the roller. The roller support typically comprises a yoke having two ears or flanges between which the roller is arranged. The roller is located at the height of the dispenser slot.The roller and the slot are thus located in the same plane to facilitate the guiding of the fibers to the roller and the application of the roller to the fibers.

[0010] Such a configuration of the draping head is not entirely satisfactory. Indeed, the receiving structure has the shape of the panel to be manufactured and may include chamfers having angles which can go up to more than 45°. However, the size of the draping head does not allow the deposition of the fibers on this type of chamfer of the receiving structure. Indeed, the arrangement of the flanges relative to the roller limits access to the chamfers. Generally, when the draping head approaches the chamfers for an application of the roller, there is a collision between the receiving structure and the distributor.

[0011] Therefore, there is a need to provide a fiber layup head, for manufacturing parts by an automated layup process, which allows the layup or deposition of fibers on any shape of the host structure such as chamfers having angles which can go beyond 45°. Summary of the invention

[0012] For this purpose, the invention proposes a fiber draping head, comprising:

[0013] - a dispenser configured to dispense fibers, this dispenser comprising a longitudinal distribution slot through which fibers are intended to be distributed,

[0014] - at least one roller for applying the fibers distributed by the dispenser, this roller having a first axis and being rotatable about the first axis which is parallel to said longitudinal slot, and

[0015] - a roller support comprising a first arm connecting the roller to a body of the draping head, the first arm extending along a second axis perpendicular to the first axis of the roller.

[0016] The draping head is remarkable in that the roller is entirely located under a plane perpendicular to the second axis of the first arm and passing through the longitudinal slot of the distributor.

[0017] Thus, according to the invention, the roller is offset relative to the slot of the dispenser along the second axis. The roller is thus located at a distance from the dispenser along the second axis unlike the device of the prior art in which the roller is located in the same plane as the slot.

[0018] This distance separating the slot from the roller makes it possible to reduce the size of the draping head, and in particular around the roller. Thanks to the invention, the chamfers are therefore accessible to the roller without collision of the distributor with the receiving structure.

[0019] Thanks to the device of the invention, it is therefore possible to manufacture, by automated draping processes, parts comprising chamfers having angles going beyond 45°.

[0020] The invention may comprise one or more of the following features, taken in isolation from one another or in combination with one another:

[0021] - the support is removably attached to the body of the draping head,

[0022] - the first arm is movable in translation along the second axis,

[0023] - the support is movable in rotation around an axis which is parallel to the first axis of the roll,

[0024] - a fiber guide tab carried by the dispenser and having an edge licking the roll,

[0025] - the tongue extends at least partly parallel to the second axis of the first arm,

[0026] - a fiber guide cylinder carried by the support and having a third axis parallel to the first axis of the roller and located in the plane,

[0027] - the cylinder is movable in rotation around the third axis,

[0028] - the support comprises a second arm parallel to the first arm and a connecting bar connecting the first and second arms, the roller being located between the first and second arms, and the cylinder being carried by the connecting bar,

[0029] - a second roller connected to the body of the draping head by the second arm,

[0030] — the support comprises a longitudinal groove in which the cylinder and a fiber guide groove, the fibers being guided between the groove and the tab. Brief description of the figures

[0031] Other characteristics and advantages will emerge from the following description of non-limiting embodiments of the invention with reference to the attached drawings on which:

[0032] [Fig.l] is a schematic representation in longitudinal section of a half aircraft turbomachine,

[0033] [Fig.2] is a perspective representation of a room,

[0034] [Fig.3] is a schematic representation of an installation comprising a draping device having a draping head according to the invention,

[0035] [Fig.4] is a side view of the draping head according to the invention,

[0036] [Fig.5] is another view of the draping head according to the invention,

[0037] [Fig.6] is a sectional view along a plane parallel to the first axis of the roller of the draping head according to one embodiment of the invention,

[0038] [Fig.7] is an enlarged view of zone ZI of [Fig.4],

[0039] [Fig.8] is a perspective representation of a reception structure equipping the installation of [Fig.3],

[0040] [Fig.9] is a front view of the draping head during the deposition of fibers on the host structure,

[0041] [Fig. 10] is a front view of the draping head during the deposition of fibers on a chamfer of the host structure in a first direction,

[0042] [Fig. 1 1] is a side view of the draping head during the deposition of fibers on a chamfer of the host structure in a second direction. Detailed description of the invention

[0043] An example of a turbomachine 1 for an aircraft is shown in [Fig.l]. The turbomachine 1 extends around and along a longitudinal axis A.

[0044] The turbomachine 1 is for example a turbojet. It comprises from upstream to downstream along the longitudinal axis A in the direction of flow of the gases F in the turbomachine 1, a fan 2, at least one compressor such as a low pressure compressor 3 and a high pressure compressor 4, a combustion chamber 5, at least one turbine such as a high pressure turbine 6 and a low pressure turbine 7, and a gas exhaust nozzle.

[0045] The low and high pressure compressors 3, 4 and the high and low pressure turbines 6, 7 each comprise at least one rotor. The rotor of the low pressure compressor 3 is connected to the rotor of the low pressure turbine 7 by a low pressure shaft 8 and the rotor of the high pressure compressor 4 is connected to the rotor of the high pressure turbine 6 by a high pressure shaft 9. The high pressure shaft 9 is centered on the longitudinal axis A and arranged coaxially around the low pressure shaft 8.

[0046] The fan 2 comprises a disk movable in rotation about the longitudinal axis A and blades 10 extending radially from the disk. The fan 2 further comprises a fan shaft (not shown) connected to the low pressure shaft 8 by through a speed reducer for example. The fan 2 is for example of the shrouded type. The turbomachine 1 thus further comprises a fan casing 11. The fan casing 11 is annular and centered on the longitudinal axis X. It is arranged around the blades 10.

[0047] According to another example, the fan 2 is of the non-ducted type.

[0048] The turbomachine 1 further comprises an intermediate casing 12. The intermediate casing 12 is arranged downstream of the fan casing 11. It is connected to the fan casing 11 for example by flanges.

[0049] The turbomachine 1 further comprises a nacelle 13. The nacelle 13 is arranged around the fan and intermediate casings 11, 12.

[0050] The turbomachine 1 is furthermore equipped with parts 14 comprising an organic matrix composite material. For example, in order to reduce the noise pollution generated by the turbomachine 1, the latter comprises at least one or more acoustic panels 14.

[0051] Each acoustic panel 14 extends over an angular sector or has an annular shape centered on the longitudinal axis A. Each acoustic panel 14 can be attached and fixed inside the fan casing 11 and / or inside the intermediate casing 12 and / or inside the nacelle 13. The acoustic panels 14 can also be attached and fixed in other structures of the turbomachine 1, such as a thrust reverser.

[0052] Referring to [Fig. 2], each acoustic panel 14 has a sandwich structure. Each acoustic panel 14 comprises an outer skin 15, an inner skin 16 and a core 17 arranged between the outer and inner skins 15, 16.

[0053] The core 17 comprises acoustic cells 17a. The acoustic cells 17a form Helmholtz resonators. Each acoustic cell 17 has, for example, a polygonal cross-section, for example square, rectangular or hexagonal as illustrated in [Fig. 2]. The cross-section of the acoustic cells 17a may differ from one acoustic cell 17a to another. Each acoustic cell 17a is hollow and has an internal cavity 17b.

[0054] Advantageously, the core 17 has a thickness of between 1 mm and 5 mm, in particular 4 mm.

[0055] The core 17 comprises for example a metallic material such as aluminum, in particular an aluminum alloy chosen from the 6000 series or a polymeric material chosen for example from thermoplastics or a composite material.

[0056] The outer and inner skins 15, 16 comprise an organic matrix composite (OMC) material. The composite material comprises an organic matrix and fibers embedded in the matrix. The organic matrix is ​​chosen from thermosetting or thermoplastic polymers. The thermosetting polymer is for example for example an epoxy polymer. The thermoplastic polymer is for example chosen from polyolefins such as polypropylene, polyethylene, or fluorinated polymers such as polyvinylidene fluoride (PVDF) or polyaryletherketones such as polyetheretherketone (PEEK). The fibers are for example chosen from carbon, glass or aramid fibers.

[0057] The outer and inner skins 15, 16 each have a thickness of between 1 mm and 10 mm.

[0058] The acoustic panel 14 further comprises chamfers. The chamfers have, for example, angles greater than or equal to 30°, or greater than or equal to 45°.

[0059] The outer and / or inner skins 15, 16 are produced by an automatic draping process, and in particular, an automatic fiber placement process, also known by the acronym AFP (for "Automated Fiber Placement" in English) or automatic placement of fiber strips, also known by the acronym ATL (for "Automated Tape Laying" in English).

[0060] For this purpose, the invention proposes an installation 100 for draping fibers 101 for the manufacture of these parts 14, in particular acoustic panels. The installation 100 is for example illustrated in [Fig.3].

[0061] The installation 100 comprises a draping device 102, a receiving structure 103 and a device 104 for supplying fibers 101. The draping installation 100 further comprises a device 105 for conveying the fibers 101 connecting the draping device 102 to the supply device 104.

[0062] The feed device 104 comprises, for example, a creel 104a comprising reels 104b of fibers 101. The feed device 104 further comprises a conveyor (not shown) for transferring the fibers 101 into the conveying device 105. The conveyor comprises, for example, a pair of rollers which may be counter-rotating and between which the fibers 101 pass. The conveyor thus exerts a tensile force on the fibers 101 to drive the fibers 101 in translation in a direction parallel to their axes of elongation Y.

[0063] The routing device 105 comprises for example a flexible tube 105a having an internal passage in which the fibers 101 circulate to the draping device 102.

[0064] In the present invention, the expression "fiber" designates any fibrous element covering either a strand, i.e., a unit fiber consisting of a plurality of filaments, or a strip of fibers, i.e., a group of unidirectional fibers. The strip of fibers has a width as measured perpendicular to the elongation axis Y of the fibers 101 greater than the width of a strand. Furthermore, the fibers 101 may be pre-impregnated with the matrix or dry, i.e., not impregnated with the matrix.

[0065] The fibers 101 are deposited or draped onto the receiving structure 103 by the draping device 102. The draping device 102 thus comprises a robot 106 and a draping head 107.

[0066] The robot 106 is capable of moving the draping head 107 in at least three directions perpendicular to each other. The robot 106 comprises, for example, an articulated arm 106a at the end of which the draping head 107 is mounted. The robot 106 is, for example, a standard six-axis robot, placed on the ground or mounted on a linear axis.

[0067] As best seen in [Fig.4], the draping head 107 comprises a body 108 carrying a distributor 109 of the fibers 101, a first roller 110 and a support 111 of the roller 110.

[0068] At the outlet of the conveying device 105, the fibers 101 pass into the distributor 109 which guides the fibers to the roller 110. Advantageously, the distributor 109 is fixed to the body 108 of the draping head 107 in a removable manner. By “removable”, it is understood that the distributor 109 can be mounted and removed from the body 108. The distributor 109 is for example fixed to the body 108 of the draping head 107 by a ball connector, for example of the “ball-lock” type. Such a feature allows rapid mounting and dismounting of the distributor 109 for maintenance of the draping head 107.

[0069] The distributor 109 comprises a housing 109a extending in a first direction L parallel to the elongation axis Y of the fibers 101 when they are in the distributor 109. The housing 109a has an internal face 109a' located on the side of the receiving structure 103 and an opposite external face facing the body 108 of the draping head 107. The housing 109a has a width for example between 80 mm and 150 mm as measured in a second direction T perpendicular to the first direction L. Preferably, the width of the housing 109a is greater than the width of the fibers 101.

[0070] The housing 109a may be multi-element. It comprises for example a first plate, a second plate and a third plate between which the fibers 101 are arranged. The plates extend in the first direction L of the housing 109. For example, a series of four fibers 101, parallel to each other, pass between the first and second plates and another series of four fibers 101, parallel to each other, pass between the second and third plates. Advantageously, each plate is grooved to facilitate the passage and guidance of the fibers 101.

[0071] The housing 109a further comprises a fiber inlet 101 connected to the flexible tube 105a of the routing device 105a. The housing 109a further comprises an outlet end 109b of the fibers 101 and at least one internal passage of the fibers 101 (not illustrated) connecting the inlet to the outlet end 109b. Each internal passage may be delimited respectively by the first and second plates and second and third plates.

[0072] The outlet end 109b is beveled to facilitate the passage of the fibers 101.

[0073] The distributor 109 further comprises a longitudinal slot 109c through which the fibers 101 are distributed. The longitudinal slot 109c is provided in the output end 109b of the housing 109a. The longitudinal slot 109c preferably extends over the entire width of the output end 109b of the housing 109a.

[0074] The longitudinal slot 109c extends along the second direction T. The longitudinal slot 109c has, for example, a width of between 50 mm and 60 mm as measured along the second direction T.

[0075] The roller 110 allows the deposition of the fibers 101 distributed by the distributor 109 on the receiving structure 103. The roller 110 is located upstream of the distributor 109 relative to the direction of movement D of the draping head 107 on the support 103. As illustrated in [Fig.4], the draping head moves from right to left (from upstream to downstream). The roller 110 is located to the right of the distributor 109 and therefore upstream of the latter.

[0076] The roller 110 is annular and has a first axis XI extending substantially parallel to the second direction T. The roller 110 is movable in rotation around the first axis XL. The roller 110 comprises a cylindrical body having a cylindrical surface 110a for applying the fibers 101 and two annular lateral surfaces 110b located on either side of the cylindrical surface 110a.

[0077] The roller has for example a diameter between 65 mm and 70 mm and a length between 55 mm and 65 mm.

[0078] The roller 110 further comprises an internal passage of a shaft 110c for driving the cylindrical body in rotation. The shaft 1110c extends along the first axis XI of the roller 110.

[0079] The support 111 connects the roller 110 to the draping head 107. Advantageously, the support 111 is removably connected to the dredging head 107. By “removably”, it is understood that the support 111 can be mounted and dismounted from the body 108. The support 111 is for example fixed to the body 108 of the draping head 107 by a ball connector for example of the “ball-lock” type. Such a feature allows rapid assembly and disassembly of the support 111 for maintenance of the draping head 107. The support 111 comprises at least one arm 111a connected to the roller 110 and extending along a second axis X2 perpendicular to the first axis XI of the roller 110. Preferably, the support 111 has a general H shape. It comprises a first arm 11a and a second arm 111b between which the roller 110 is arranged. The first and second arms 111a, 111b are parallel to each other and extend along the second axis X2.The first and second arms 111a, 111b each have a first end connected to the body 108 of the draping head 107 and a second end 111a' opposite to . the draping head 107. The second ends 111a' are connected to the roller 110 via the shaft via a pivot connection for example.

[0080] According to the invention, the roller 1110 is entirely located under a plane P perpendicular to the second axis X2 and passing through the longitudinal slot 109c of the distributor 109. The plane P is parallel to the first axis XI of the roller 110. Thus, according to the invention, the roller 110 is located at a distance from the distributor 109. Preferably, the distance D separating the distributor 109 from the roller 110 as measured along the second axis X2 is greater than 50 mm, preferably greater than 60 mm and more preferably greater than or equal to 70 mm. Such a characteristic of the invention makes it possible to reduce the size of the draping head 107.

[0081] Advantageously, the first and second arms 111a, 111b are movable in translation along the second axis X2. Thanks to such a characteristic, the distance D is adjustable and variable. Preferably, the first and / or second arms 111a, 111b are respectively mounted on a linear axis 111c. Each linear axis 111c comprises a fixed body on which each first and second arm 111a, 111b is mounted by means of a guide track allowing the sliding of the first and second arms 111a, 111b on the respective fixed bodies. The linear axis 111c further comprises a transmission device connected to a motor which allows the translational movement of the first and second arms 111a, 111b along the second axis X2.

[0082] Advantageously, the support 111 is movable in rotation around an axis parallel to the first axis XI of the roller 110. Thus, the angular position of the roller 110 can be modified and adapted according to the zone of the reception structure 103.

[0083] The first and second arms 111a, 111b are connected to each other opposite the second end 11a' by a connecting bar 11c. The connecting bar 111c extends substantially in the second direction T. It is located between the roller 110 and the body 108.

[0084] Advantageously, the connecting bar 111c carries a support block 111d having a central groove 111c facing the longitudinal slot 109c and a fillet 111f extending from the central groove 111c to an edge of the support block 111d.

[0085] According to an embodiment illustrated in [Fig. 6], the draping head 107 comprises a second roller 110' movable in rotation and mounted around a second drive shaft. The second roller 110' has an axis parallel to the axis of the first roller 110. According to this embodiment, the first and second rollers 110, 110' are mounted between the first and second arms 111a, 111b. The first roller 110 is for example connected to the first arm 11a and the second roller 110' is for example connected to the second arm 111b. The first and second rollers 110, 110' are separated by a determined distance as measured in the second direction T.

[0086] Advantageously, according to this embodiment, the first arm 11a is movable in translation along the second axis X2 as defined previously while the second arm 111b can be fixed or movable in translation along the second axis X2 as defined previously. Such an embodiment makes it possible to further reduce the size of the draping head 107. Indeed, on areas of the reception structure 103 of complex geometry, it is possible to use only one part of the roller 110 and to retract the other part of the roller 110.

[0087] Advantageously, the draping head 107 further comprises a tongue 112 for guiding the fibers 101. The tongue 112 extends from the distributor 109 to the roller 110. The guide tongue 112 extends at least partly substantially parallel to the second axis of the arm X2 between a first edge 112a and a second edge 112b opposite the first edge 112a. Thus, at the outlet of the distributor 109, the fibers 101 are oriented substantially parallel to the second axis of the first and second arms 111a, 111b. The first edge 112a is connected to the distributor 109 and bears for example on the internal face 109a' of the outlet end 109b of the distributor 109. The second edge 112b bears tangentially against the roller 110 so that the second edge 112b licks the roller 110. Taking into account the distance D separating the distributor 109 from the roller 110, it is advantageous to provide an additional system for guiding the fibers 101 towards the roller 110.The tab 112 thus makes it possible to orient the fibers 101 against the roller 110 in order to improve and facilitate the deposition of the fibers on the support 103.

[0088] Advantageously, the tongue 112 has a width as measured along the second direction T equal to the width of the longitudinal slot 109c. The tongue 112 also has a thickness, for example, less than or equal to 0.2 mm.

[0089] In order to further improve the guidance of the fibers 101, as best seen in [Fig.7], the draping head 107 further comprises a cylinder 113 for guiding the fibers 101.

[0090] The cylinder 113 has a third axis X3 around which it is advantageously movable in rotation. The third axis X3 is parallel to the first axis XI of the roller 110. The cylinder 113 has a length and an external diameter. The length of the cylinder 113 is greater than its external diameter, advantageously twice, three times, four times or five times greater than its external diameter.

[0091] The cylinder 113 is carried by the support 111. In particular, the cylinder 113 is carried by the connecting bar 111c. For example, the cylinder 113 is mounted in the central groove 111c of the support block 111d.

[0092] Furthermore, the cylinder 113 is located in the plane P. It is thus opposite the longitudinal slot 109c so that the fibers 101 can arrive tangentially against the cylinder 113 at the outlet of the distributor 109 and be guided between the tongue 112 and the fillet 11 If of the support block 11 Id substantially parallel to the second axis X2 towards the roller 110.

[0093] Advantageously, and in a manner not illustrated, the draping head 107 further comprises a heating member. The heating member is located downstream of the roller 110 and the distributor 109 relative to the direction of movement D of the draping head 107. The heating member is for example a laser which emits radiation in the direction of the fibers 101 leaving the distributor 109. The heating member makes it possible to cause the thermoplastic matrix to melt in the case of pre-impregnated fibers 101 and therefore to promote the adhesion of the fibers 101 to each other during their deposition or draping on the support 103.

[0094] Advantageously, and in a manner not illustrated, the draping head 107 further comprises a fiber cutting member 101. The cutting member comprises, for example, a blade making it possible to cut the fibers 101 after they have been deposited on the receiving structure 103.

[0095] The receiving structure 103 forms, for example, a draping mold for the part 14. The receiving structure 103 thus has the geometry of the part 14. As illustrated in [Fig. 8], the receiving structure 103 is, for example, annular. It can nevertheless be of any geometry depending on the part 14. The receiving structure 103 comprises a deposition surface 103a on which the fibers 101 are deposited. The deposition surface 103a is, for example, the core 17 of the part 14. The deposition surface 103a comprises at least one chamfer 103b. The chamfer 103b has an angle, for example, greater than or equal to 45°.

[0096] With reference to figures 9, 10 and 11 illustrating the implementation of the draping head 107 according to the invention, it can be seen that thanks to the offset of the roller 110, it is possible to access the chamfers 103b of the receiving structure 103 without collision of the distributor 109 against the receiving structure 103.

[0097] Thanks to the invention, it is therefore notably possible to drape or deposit fibers 101 on the chamfers 103 having an angle of 45° or more.

[0098] The draping head 107 according to the invention can be used for the manufacture of any part requiring the deposition of fibers.

Claims

Claims

1. A draping head (107) for fibers (101), comprising: - a dispenser (109) configured to dispense fibers (101), this dispenser (109) comprising a longitudinal dispensing slot (109c) through which fibers (101) are intended to be dispensed, - at least one roller (110) for applying the fibers (101) dispensed by the dispenser (109), this roller (110) having a first axis (XI) and being rotatable about the first axis (XI) which is parallel to said longitudinal slot (109c), and - a support (111) for the roller (110) comprising a first arm (111a) connecting the roller (110) to a body (108) of the draping head (107), the first arm (111a) extending along a second axis (X2) perpendicular to the first axis (XI) of the roller (110),characterized in that the roller (110) is entirely located under a plane (P) perpendicular to the second axis (X2) of the first arm (11a) and passing through the longitudinal slot (109c) of the distributor (109).,

2. Laying head according to the preceding claim, characterized in that the support (111) is removably fixed to the body (108) of the laying head (107).

3. Laying head according to any one of the preceding claims, characterized in that the first arm (11a) is movable in translation along the second axis (X2).

4. Laying head according to any one of the preceding claims, characterized in that the support (111) is movable in rotation around an axis which is parallel to the first axis (XI) of the roller (110).

5. Laying head according to any one of the preceding claims, characterized in that it further comprises a tab (112) for guiding the fibers (101) carried by the distributor (109) and having an edge (112b) licking the roller (110).

6. Laying head according to the preceding claim, characterized in that the tongue (112) extends at least partly parallel to the second axis (X2) of the first arm (111a).

7. Laying head according to any one of the preceding claims, characterized in that it further comprises a cylinder (113) for guiding the fibers (101) carried by the support (111) and having a third axis (X3) parallel to the first axis (XI) of the roller (110) and located in the plane (P).

8. Laying head according to the preceding claim, characterized in that the cylinder (113) is movable in rotation around the third axis (X3).

9. Laying head according to one of claims 7 or 8, characterized in that the support (111) comprises a second arm (111b) parallel to the first arm (11a) and a connecting bar (111c) connecting the first and second arms (111a, 111b), the roller (110) being located between the first and second arms (111a, 111b), and the cylinder (113) being carried by the connecting bar (111c).

10. Laying head according to the preceding claim, characterized in that it comprises a second roller (110') connected to the body of the laying head (108) by the second arm (111b).

Citation Information

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