EP3170929A1 - Navette de métier à tisser et procédé de fabrication d'une navette de métier à tisser - Google Patents

Navette de métier à tisser et procédé de fabrication d'une navette de métier à tisser Download PDF

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Publication number
EP3170929A1
EP3170929A1 EP16198231.9A EP16198231A EP3170929A1 EP 3170929 A1 EP3170929 A1 EP 3170929A1 EP 16198231 A EP16198231 A EP 16198231A EP 3170929 A1 EP3170929 A1 EP 3170929A1
Authority
EP
European Patent Office
Prior art keywords
weaving machine
projectile
clamp
housing
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16198231.9A
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German (de)
English (en)
Inventor
Gianfranco Di Natale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3170929A1 publication Critical patent/EP3170929A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J5/00—Shuttles
    • D03J5/06—Dummy shuttles; Gripper shuttles

Definitions

  • the invention particularly relates to a loom projectile according to the preamble of claim 1.
  • the object of the invention is in particular to provide a loom projectile, by means of which particularly high entry performance can be achieved and in particular is particularly flexible designable.
  • the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention, the dependent claims and claims can be removed.
  • the invention is based on a loom projectile with at least one housing and in particular at least one clamp.
  • a "3D printing process” is to be understood in particular as a process in which a three-dimensional workpiece is built up in layers, wherein the structure is preferably computer-controlled from one and / or several liquid or solid, in particular powdery materials. This is in particular an additive process.
  • physical or chemical hardening and melting processes take place during and / or after the printing process. In this case, only small components of the entire loom projectile can be produced in a 3D printing process.
  • the weaving machine projectile has functional, ie in particular with spring elements which are provided for loading the clip with spring forces, preferably a weight less than 75 g.
  • the clip and / or one or more spring elements are designed as Einlegmaschine that are reprinted and / or later mounted.
  • weaving machine projectile Because at least part of the weaving machine projectile is produced and / or produced in a 3D printing method, particular shapes and properties can be specifically adapted to existing requirements in a particularly flexible manner, whereby a weaving machine projectile can be provided by means of which particularly high input performances can be achieved , In particular, highly loaded areas of the weaving machine projectile can be advantageously designed by targeted shaping and / or material selection.
  • the weaving machine projectile can be designed to be particularly flexible, and indeed, in particular, a system with at least two similar weaving machine projectiles can be created which have different masses.
  • the weaving machine projectiles at least substantially the same length and / or the same width, ie with a deviation less than 10% and preferably with a deviation less than 5%, and / or provided are to be used on the same weaving machines.
  • the weaving machine projectiles of the Systems may have a mass difference, based on a total weight of the lightest weaving machine projectile of the system, preferably of more than 3%, and more preferably of more than 5%.
  • the different masses can be achieved with differing wall thicknesses and / or with differing materials.
  • the flexibility can be further increased and, in particular, the surface quality of the weaving machine projectile can be improved if the weaving machine projectile is reworked after a printing operation, such as preferably with a milling process and more preferably with a grinding process.
  • various parts of the weaving machine projectile that appear appropriate to the person skilled in the art can be produced by means of the 3D printing method, such as cover elements, caps etc.
  • the housing and / or the clip are particularly preferably completely and preferably at least partially, preferably for the most part produced a 3D printing process, which in total a particularly high degree of flexibility can be achieved to tailor the properties of the loom projectile specifically to his requirements.
  • the housing and the clip are preferably formed by separate components, but could also be at least partially formed in one piece.
  • in one piece should be understood in particular to be at least materially bonded, for example by a welding process, an adhesive process, an injection process, a printing process and / or another process that appears expedient to a person skilled in the art, and / or advantageously shaped in one piece, such as for example, by a production from a cast and / or by a production in a one- or multi-component injection molding process and advantageously from a single blank.
  • the weaving machine projectile has at least one closed launching surface.
  • a "closed launching surface” is intended in particular a surface be understood, in particular, no gaps and / or spaces encloses, as is the case for example with an annular surface, and / or it should be understood a surface having only a single outer, preferably exclusively convex edge, in particular of an outer contour of the housing and a boundary of a thread clamping area is formed.
  • the weaving machine projectile as viewed in its weft direction, has an envelope which is completely filled by two closed firing surfaces of the weaving machine projectile and a thread clamping region of the weaving machine projectile.
  • a total large launching surface can be achieved and, associated with it, a small surface pressure and / or a particularly high acceleration capability of the weaving machine projectile can be achieved.
  • the launching surfaces are designed so that the weaving machine projectile is launched at a firing speed greater than 45 m / s and particularly advantageously at a firing speed greater than 60 m / s and in particular up to 80 m / s.
  • the weaving machine projectile has at least one launching surface which is larger than a preceding cutting surface in a cutting plane perpendicular to a weft direction, preferably in a cutting plane in an end region of the weaving machine projectile.
  • an "end region” is to be understood as meaning, in particular, an area in the last 20%, and preferably in the last 10%, based on a total length of the loom projectile starting from a free end of the weaving machine projectile.
  • the weaving machine projectile is at least partially printed from a high-performance plastic and / or a metallic material.
  • High-performance plastic is understood to mean a plastic which differs from standard plastics, in particular in terms of its temperature resistance, its chemical resistance, its density and / or its mechanical properties.
  • the high-performance plastic has a modulus of elasticity greater than 1000 MPa and preferably greater than 2000 MPa.
  • the high-performance plastic has a melting temperature greater than 180 ° C and in particular a density greater than 1.0 gcm -3 and particularly preferably greater than 1.1 gcm -3 .
  • the high performance plastic is preferably formed from a polyethersulfone (PES), a polyamide-imide (PAI) and / or most preferably from a polyetheretherketone (PEEK) plastic.
  • the clip has at least one movable in the housing, in particular pivotally mounted clamping element, whereby a particularly advantageous thread clamping force can be achieved.
  • the clamping element can also be displaceably mounted along a movement path, such as a curve.
  • the clip has two pivotally mounted clamping elements, which are preferably arranged like a scissor to each other. In this case, the clip elements may be pivotally mounted about a common pivot axis or about two pivot axes.
  • the clip has at least two separate spring bearing surfaces for loading the clip with forces of one or more spring elements at least substantially in one direction, whereby an advantageous high clamping force at relatively small surface pressures in the Spring contact surfaces can be achieved.
  • a "spring support surface” should be understood to mean, in particular, a surface, in particular a contact surface, via which a spring element introduces a spring force into the clamp in at least one operating state and which is purposefully provided and designed for this purpose.
  • the term "substantially in one direction” is to be understood in particular to mean that resultant force vectors on the surfaces in their direction differ by less than 60 ° and in particular by less than 45 °.
  • At least two spring bearing surfaces are arranged on a movably mounted clamping element and in particular in each case two spring bearing surfaces on two mutually movably mounted clamping elements.
  • "separate" spring support surfaces are to be understood as meaning, in particular, self-contained, spatially-spaced surfaces, in particular contact surfaces.
  • the spring bearing surfaces can be arranged on a common contiguous total area and / or can advantageously be separated from one another by geometric shapes, such as preferably elevations.
  • the weaving machine projectile has at least one spring element which can be mounted in the housing for generating and / or increasing a clamping force of the clamp, whereby simply targeted clamping forces, in particular high clamping forces, can be achieved.
  • the weaving machine projectile can be flexibly adapted to different requirements, in particular if the spring element is removable, so that preferably a system with a weaving machine projectile and at least two differing, alternatively mountable spring elements or a system with at least two similar weaving machine projectiles can be constructed Have different spring elements for loading the clip, especially for different applications, especially with different threads.
  • the spring element can be removed from the housing without this Housing and / or the spring element must be destroyed.
  • the housing has at least one mounting opening, through which the spring element can be mounted and preferably also disassembled.
  • at least one spring element could also be produced at least partially in an additive process, such as in particular in a 3D printing process.
  • at least one spring element is formed at least partially in one piece with the housing and / or with the clamp.
  • the spring element can be formed by various spring elements which appear to be suitable to a person skilled in the art, such as a helical compression spring, a tension spring, a disk spring, a torsion spring, etc.
  • the spring element is particularly advantageously formed by a leaf spring, whereby it is particularly advantageously simply integrated into the housing and in particular can be mounted.
  • a "leaf spring” should be understood in particular to mean a spring made of a plate-shaped spring material, in particular spring steel, the thickness of which is small in comparison to its dimensions when viewed in a plane state, i. in particular at most 20% and preferably at most 10% of its width and / or length.
  • the spring element is wave-shaped, whereby a particularly advantageous introduction of force, in particular over a large spring support surface and / or advantageously over a plurality of separate spring support surfaces, can be achieved.
  • wave-shaped should be understood to mean, in particular, that the spring element has at least one concave and at least one convex portion in at least one consideration, with the portions preferably following one another following one another.
  • a clamping force greater than 40 N and in particular greater than 50 N can be generated.
  • the housing, the clip and / or at least the spring element are designed accordingly. By a corresponding configuration thread losers can be at least reduced.
  • the weaving machine projectile has at least one impact absorber, as a result of which undesired rebounding can at least be reduced, and this despite high speeds that can be achieved by means of the weaving machine profile according to the invention.
  • an "impact absorber” is to be understood as meaning, in particular, an element which is specifically intended to convert kinetic energy into heat.
  • damper Various types of damper that appear reasonable to a person skilled in the art are conceivable, such as gas pressure dampers, hydraulic dampers and / or deformation dampers, which are intended to convert the kinetic energy into heat by means of a plastic and / or preferably elastic deformation.
  • the impact damper preferably comprises a material which has a lower hardness than the material of the housing.
  • the impact damper can be arranged at various positions of the weaving machine projectile that appear appropriate to the person skilled in the art. However, this is particularly advantageously arranged in a mounting opening of the spring element. As a result, the impact damper can advantageously be integrated into the housing, in particular with a good hold, and, moreover, an undesired opening can be avoided.
  • the impact absorber can also be arranged on the housing in various ways that appear appropriate to a person skilled in the art, for example, it can also be printed, glued and / or molded in a 3D printing process.
  • the impact absorber is particularly advantageously designed as a plug-in element and is preferably in an opening, like in particular in the mounting opening of the spring element, mounted with a Einsteckvorgang.
  • the housing and / or the clamp are formed in at least one region of a first material and in a second region of a different from the first material second material, whereby the areas can be advantageously adapted to differing requirements, such as in particular differing wear requirements, strength requirements, slip requirements, etc.
  • different materials may have been printed in the 3D printing process, and / or other materials, such as a coating process, etc, may have been processed by other methods other than the 3D printing process ,
  • the weaving machine projectile has at least one exchangeable clamping surface, in particular an exchangeable thread clamping surface of the clamp.
  • the clamping surface can be formed by various components that appear appropriate to a person skilled in the art, such as a plate-shaped component which can be fastened to a stapling head via a plug-in mechanism and / or preferably a shoe-like component, into which a part of a stapling head of the staple for fastening the staple Component can be introduced to the bracket.
  • the loom projectile according to the invention should not be limited to the application and embodiment described above.
  • FIG. 1 shows a weaving machine projectile in a plan view with a housing 10 and a housing 12 disposed in the bracket 12.
  • the housing 10 and the bracket 12 are made entirely in a 3D printing process.
  • a 3D printer 60 is shown schematically during a printing operation of the weaving machine projectile.
  • the weaving machine projectile is printed in a vertical orientation, ie the weaving machine projectile is built up in layers along its longitudinal extent, whereby it can be produced in a particularly cost-effective manner and with a particularly homogeneous structure. This allows a cost-effective and
  • the housing 10 and the clip 12 are printed from a high performance plastic, and that of a PEEK plastic.
  • the loom projectile can also at least partly made of metal or even completely made of metal.
  • the loom projectile is reworked in a grinding process with a grinding machine 66 shown schematically after the printing operation.
  • the weaving machine projectile has an elongated shape with an end 62 pointing in a weft direction 22 and an end 64 pointing counter to the weft direction 22.
  • the weaving machine projectile has two closed launching surfaces 14, 16 (cf. FIG. 2 ). Via the launching surfaces 14, 16, a force is initiated when the weaving machine projectile is launched in order to accelerate the weaving machine projectile.
  • the firing surfaces 14, 16 each have only a single outer, convex edge, wherein the edges of an outer contour of the housing 10 and a boundary of a thread clamping portion 68 are formed.
  • the housing 10 is formed in one piece and thus the firing surfaces 14, 16 are each completely formed by a one-piece housing 10. Viewed in the weft direction 22, the weaving machine projectile has an envelope which is completely filled by the two closed firing surfaces 14, 16 and the thread clamping region 68 (cf. FIG. 2 ).
  • the firing surfaces 14, 16 are larger than preceding cut surfaces 18, 20 in a sectional plane perpendicular to the weft direction 22 in an end region of the weaving machine projectile assigned to the end 64 (cf. FIG. 5 ).
  • the clamp 12 comprises two clamp elements 24, 26 which are mounted pivotably in the housing 10.
  • the clamp elements 24, 26 are arranged like a cross, scissors-like and are mounted on a bolt 70 integrally formed on the housing 10 about a common pivot axis 72 in the housing 10, relative to one another (FIG. see. FIGS. 5 and 6 ).
  • the clip 12 or have their clip elements 24, 26 each have two separate Spring support surfaces 28, 30, 32, 34 for loading the clamp 12 with forces of two mounted in the housing 10 spring elements 36, 38.
  • the spring element 36 loads the clamp element 26 via the spring support surfaces 28, 30 in a first direction 40 and the spring element 38 loads the clamp element 24 via the spring support surfaces 32, 34 in a second, the first direction 40 opposite direction 42.
  • the clamp 12 is shown in an open state, ie the clamp members 24, 26 are deflected against the spring forces of the spring elements 36, 38.
  • the spring elements 36, 38 are formed by wave-shaped leaf springs and are provided for generating a clamping force of the clip 12, in particular by a clamping force greater than 40 N.
  • the wave-shaped leaf springs extend over a large part of a clamp part which extends from the pivot axis 72nd , in weft direction 22 extends.
  • the spring elements 36, 38 are inserted during assembly via a mounting opening 46 in the housing 10 and are also disassembled via the mounting hole 46.
  • the mounting opening 46 is arranged on a front side of the weaving machine projectile pointing in the weft direction 22.
  • a wedge-shaped guide element 78 is integrally formed on the housing 10 in the area of the mounting opening 46 (cf. FIG. 6 ).
  • the guide member 78 could also be omitted in principle, especially if weight should be saved.
  • an impact damper 44 is arranged and closes it completely.
  • the impact damper 44 is mounted after mounting the spring elements 36, 38 in the mounting hole 46 and is disassembled for disassembly of the spring elements 36, 38 from the mounting hole 46.
  • the impact damper 44 is formed of a soft elastic plastic.
  • the housing 10 is formed from a particularly hard first material 48 in a region of the end face pointing in the weft direction 22. Furthermore, the housing 10 is formed from the particularly hard first material 48 in a region of the end face facing the weft direction 22.
  • the remaining part of the housing 10 is formed from a second, softer material 52, which differs from the first material 48, wherein in principle also other materials and in particular also other and / or additional areas could be provided.
  • only the area forming the launching surfaces 14, 16 can also be formed with a differing, in particular harder material.
  • the weaving machine projectile could also be formed at least partially from different metallic materials.
  • different hard areas could be achieved by different post-treatments, in particular different heat treatments.
  • the clip elements 24, 26 of the clip 12 are each completely formed of a material 50, but they could also be formed in different areas of differing materials 50, 54. For example, these could be formed in the region of a stapling head 86, in the region of which a thread is stapled, from a material 54 which is purposefully provided to ensure a good hold of a thread in the staple 12, as shown in FIG FIG. 5 is indicated.
  • the clip 12 has replaceable clamping surfaces 56, 58 formed by schematically indicated interchangeable clamping shoes.
  • FIG. 5a a second loom projectile is shown, which is similar to that in FIG. 5 illustrated weaving machine projectile of a weaving machine projectile system.
  • the loom projectile in FIG. 5a has the same external dimensions as the weaving machine projectile in FIG. 5 and only differs in two ways.
  • the loom projectile in FIG. 5a has due to additional Materialanformungen 82a, 84a and thus higher wall thicknesses on a higher mass than the weaving machine projectile in FIG. 5 ,
  • a weaving machine projectile can advantageously also be manufactured with a honeycomb structure, as a result of which, in particular, low weights can be achieved.
  • a honeycomb structure such as with different profiles, e.g. Full profiles, hollow profiles, honeycomb profiles, specifically different weights can be realized.
  • the loom projectile in FIG. 5a Spring elements 36a, 38a, extending from the spring elements 36, 38 of the weaving machine projectile in FIG. 5 distinguish, namely the spring elements 36a, 38a are provided to a clip 12a of the loom projectile in FIG. 5a to load with a force which is greater than a force with which the spring elements 36, 38, the clamp 12 of the loom projectile in FIG. 5 strain.
  • the weaving machine projectiles could also differ in other respects.
  • the spring elements 36a, 38a in the weaving machine projectile in FIG. 5 to be built in.
  • FIGS. 7 to 11 schematically various clip alternatives are shown, which could all be arranged in a housing 10 at least substantially corresponding housing.
  • FIG. 7 a clamp 12 b of a weaving machine projectile is shown, which has two clamping elements 24 b, 26 b, which are each mounted pivotably about a pivot axis 72 b, 90 b relative to each other, wherein the pivot axes 72 b, 90 b are arranged spaced from each other.
  • the clip elements 24b, 26b are loaded by non-illustrated spring elements on a clip head 86b opposite side of the pivot axes 72b, 90b to each other, as illustrated with force vectors Fb.
  • legs of the clip elements 24b, 26b which are arranged on a side of the pivot axes 72b, 90b opposite the clip head 86b, are pivoted past one another, which is achieved by the legs of the clip elements 24b, 26b being transverse to the longitudinal extent of the clip elements Clip 12b, parallel to the pivot axes 72b, 90b, are arranged offset from each other.
  • FIG. 8 a clamp 12c of a weaving machine projectile is shown, which has two clamping elements 24c, 26c, which are also each pivotally mounted about a pivot axis 72c, 90c relative to each other, wherein the pivot axes 72c, 90c are spaced from each other.
  • the clamp members 24c, 26c are spaced apart from each other on a side of the pivot axes 72c, 90c opposite a clip head 86c in a closed state of the bracket 12c perpendicular to a longitudinal extent of the bracket 12c and perpendicular to the pivot axes 72c, 90c away, as illustrated by a force vector Fc.
  • a spring element or even a plurality of spring elements can thus be arranged between the clamp elements 24c, 26c in order to achieve a desired clamping force.
  • FIG. 9 a bracket 12d is shown, which corresponds to the bracket 12 substantially.
  • the clip 12d has two clip elements 24d, 26d, which are pivotally mounted about a common pivot axis 72d relative to each other.
  • the clip elements 24d, 26d are not shown by spring elements, for example, each of several Compression spring elements, loaded on a clip head 86d opposite side of the pivot axis 72d to each other, as illustrated by force vectors Fd.
  • a bracket 12e having two clip elements 24e, 26e which are pivotally mounted about a common pivot axis 72e relative to one another.
  • the clip elements 24e, 26e are spaced apart on a side of the pivot axis 72e opposite a clip head 86e in a closed state of the clip 12e perpendicular to a longitudinal extent of the clip 12e and perpendicular to the pivot axis 72e and are loaded away from each other by spring elements, not shown this is illustrated by a force vector Fe.
  • a spring element or even a plurality of spring elements can thus be arranged between the clamp elements 24e, 26e in order to achieve a desired clamping force.
  • FIG. 11 a bracket 12f is shown.
  • the clip 12f has two clip elements 24f, 26f, which are also pivotally mounted about a common pivot axis 72f relative to each other.
  • the clamp members 24f, 26f are spaced apart on a side of the pivot axis 72f opposite a clip head 86f in a closed state of the bracket 12f perpendicular to a longitudinal extent of the bracket 12f and perpendicular to the pivot axis 72f, and are biased away from each other by spring members, not shown.
  • the clip elements 24f, 26f are not crossed with respect to each other but are arranged parallel to each other.
  • the clip elements 24f, 26f each have a shape perpendicular to their longitudinal extension, with which the clip elements overlap 24f, 26f and in the region of the clip elements 24f, 26f are pivotally connected to each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP16198231.9A 2015-11-18 2016-11-10 Navette de métier à tisser et procédé de fabrication d'une navette de métier à tisser Withdrawn EP3170929A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015119971.8A DE102015119971A1 (de) 2015-11-18 2015-11-18 Webmaschinenprojektil und Verfahren zur Herstellung eines Webmaschinenprojektils

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EP3170929A1 true EP3170929A1 (fr) 2017-05-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16198231.9A Withdrawn EP3170929A1 (fr) 2015-11-18 2016-11-10 Navette de métier à tisser et procédé de fabrication d'une navette de métier à tisser

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EP (1) EP3170929A1 (fr)
DE (1) DE102015119971A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109016497B (zh) * 2017-06-08 2020-08-25 刘江 一种用于连续纤维增强复合材料3d打印机的纤维丝切断装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB676863A (en) * 1948-04-15 1952-08-06 Projects And Developments Ltd Improvements relating to looms with stationary weft supplies
CH502462A (de) * 1970-05-29 1971-01-31 Sulzer Ag Fadenklemmvorrichtung
EP0294576A1 (fr) 1987-06-09 1988-12-14 GebràœDer Sulzer Aktiengesellschaft Projectile synthétique et dispositif pour la commande dans les métiers à tisser
EP1163999A2 (fr) * 2000-05-30 2001-12-19 DaimlerChrysler AG Système de materiaux pour l'utilisation dans un procédé d'impression en trois dimensions
DE102012012463A1 (de) * 2012-06-21 2013-12-24 BCR Patent UG (haftungsbeschränkt) Verfahren zum computergesteuerten Drucken von thermoplastischen Kunststoffteilen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5866058A (en) * 1997-05-29 1999-02-02 Stratasys Inc. Method for rapid prototyping of solid models
DE102004003485B4 (de) * 2004-01-23 2005-06-16 Eos Gmbh Electro Optical Systems Schichtaufbauendes Verfahren zur Herstellung eines dreidimensionalen Gegenstandes sowie dafür geeignete Materialsysteme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB676863A (en) * 1948-04-15 1952-08-06 Projects And Developments Ltd Improvements relating to looms with stationary weft supplies
CH502462A (de) * 1970-05-29 1971-01-31 Sulzer Ag Fadenklemmvorrichtung
EP0294576A1 (fr) 1987-06-09 1988-12-14 GebràœDer Sulzer Aktiengesellschaft Projectile synthétique et dispositif pour la commande dans les métiers à tisser
EP1163999A2 (fr) * 2000-05-30 2001-12-19 DaimlerChrysler AG Système de materiaux pour l'utilisation dans un procédé d'impression en trois dimensions
DE102012012463A1 (de) * 2012-06-21 2013-12-24 BCR Patent UG (haftungsbeschränkt) Verfahren zum computergesteuerten Drucken von thermoplastischen Kunststoffteilen

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