EP0380452B1 - Method and apparatus for making ornamental chains with cylindrical helix links - Google Patents

Method and apparatus for making ornamental chains with cylindrical helix links Download PDF

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Publication number
EP0380452B1
EP0380452B1 EP90830009A EP90830009A EP0380452B1 EP 0380452 B1 EP0380452 B1 EP 0380452B1 EP 90830009 A EP90830009 A EP 90830009A EP 90830009 A EP90830009 A EP 90830009A EP 0380452 B1 EP0380452 B1 EP 0380452B1
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EP
European Patent Office
Prior art keywords
link
mesh
free
links
machine
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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.)
Expired - Lifetime
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EP90830009A
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German (de)
French (fr)
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EP0380452A3 (en
EP0380452A2 (en
Inventor
Pierino Maruffi
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Icm Italiana Costruzioni Metalmeccaniche Srl
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Icm Italiana Costruzioni Metalmeccaniche Srl
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Publication of EP0380452A3 publication Critical patent/EP0380452A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21L—MAKING METAL CHAINS
    • B21L11/00—Making chains or chain links of special shape
    • B21L11/005—Making ornamental chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21L—MAKING METAL CHAINS
    • B21L7/00—Making chains or chain links by cutting single loops or loop-parts from coils, assembling the cut parts and subsequently subjecting same to twisting with or without welding

Definitions

  • the invention relates to a method for forming chains with cylindrical helical meshes, for necklaces, bracelets, belts and the like, and a machine for its implementation.
  • these chains consist of cylindrical helical meshes of length slightly less than two turns and with a pitch equal to twice the thickness of the wire with which they are made.
  • these meshes are assembled by hand, that is to say united together in pairs, by helical rotation of a free mesh with respect to a mesh already assembled by alternately making a free mesh and a fixed mesh, that is to say a set called "Garibaldi module”.
  • An ornamental chain to which the invention relates is formed by several "Garibaldi modules”. It is obvious that the manual production of these chains requires a great deal of time and great skill and precision on the part of the operator; consequently, production is limited and the cost very high to the point that it is limited to chains of precious metal such as gold or silver.
  • Document DE-A-3334449 discloses a device for manufacturing an ornamental chain of meshes, each pivoted by 90 ° and thus united with one another, which comprises: means for forming meshes helical with a device for winding the supply wire, gripper means for retaining each mesh and for setting it in motion and means for cutting the mesh forming wire.
  • Each of the helical meshes, which is formed progressively, is pivoted by 90 °, then united with the previous mesh and finally cut.
  • the object of the present invention is to eliminate the aforementioned drawbacks by proposing a method and a machine for the automatic formation of these chains with helical meshes so as to increase the precision, the speed and the reliability of the production and therefore to reduce drastically manufacturing costs.
  • FIG. 1 shows an enlarged view of a helical link for an ornamental chain with "Garibaldi modules”
  • FIG. 2 shows the view of a free mesh with two meshes of FIG. 1
  • FIG. 3 represents the view of a fixed mesh with two stitches in FIG. 1
  • FIG. 4 represents the view of a piece of chain with "Garibaldi modules”
  • FIG. 5 shows the plan view of a machine for forming chains according to the invention, associated with a helical mesh forming machine;
  • FIG. 1 shows an enlarged view of a helical link for an ornamental chain with "Garibaldi modules”
  • FIG. 2 shows the view of a free mesh with two meshes of FIG. 1
  • FIG. 3 represents the view of a fixed mesh with two stitches in FIG. 1
  • FIG. 4 represents the view of a piece of chain with "Garibaldi modules”
  • FIG. 5 shows the plan view of a machine for forming chains according to the invention, associated with a helical mesh forming machine
  • FIG. 6 shows the sectional view along line BB of FIG. 5;
  • FIG. 7 shows the sectional view along the line CC of FIG. 6;
  • FIG. 8 shows the front view of a detail of the means for advancing the clamp holder shaft for the free meshes;
  • FIG. 9 shows the front view of the mesh forming machine indicated in FIG. 5;
  • FIG. 10 shows the schematic plan view of the machine of FIG. 5, in the phase of setting the first stitch for a "Garibaldi module", from a stitch forming machine;
  • FIG. 11 shows the machine of FIG. 5 in the free mesh position of the first mesh of the module with the mesh of the chain in formation which was meshed last;
  • FIG. 12 shows the machine of FIG. 5, in the setting phase of the second mesh for the module, coming from the mesh forming machine;
  • FIG. 13 shows the machine of FIG. 5 in the fixed mesh position of the second mesh of the module with the first mesh of the module.
  • Fig. 1 a helical link 1 from which a chain with "Garibaldi modules" is formed; this mesh is made, with known means, from a wire metallic, of predetermined nature and diameter, bent in a helix with a pitch barely more than twice the diameter of the wire and cut so as to obtain meshes of length slightly less than two turns, that is to say approximately 700 ° between the two ends 1a and 1b which are always directed downwards.
  • said clamp 35 has its jaws provided with an imprint adapted to receive a helical mesh of shape and dimensions corresponding to those of mesh 1.
  • the axis of said jaws is parallel to that of the shaft 29 and distant from the latter by a value equal to the radius of the mesh to allow helical movement during meshing.
  • the automatic opening of the jaws of the clamp 35 is obtained by means of a spring, at the moment when a rod 36 with wedge-shaped head releases the clamp.
  • a second section (B) for blocking the penultimate link of the chain being formed with a sleeve support 41 fixed on a base plate and in which is housed a vertical hollow shaft 42 motorized and whose upper end is shaped like a horizontal slide 43 for a slide 44 for supporting two articulated clamps 45 and 46, juxtaposed in the sliding direction, and alternately positionable in the locking and unlocking position of the corresponding mesh, that is to say on the vertical axis 22 of rotation of the slide 44 and of the shaft 42 in the cavity of which the chain descends during formation; with a hollow rod 47, threaded into the shaft 42, provided with a wedge-shaped head 48 to act on the arm of the clamps 45 and 46, and, moreover, sliding vertically under the action of an actuator E between an upper position for opening the jaws and a lower position for closing the jaws.
  • a sleeve support 41 fixed on a base plate and in which is housed a vertical hollow shaft 42 motorized and whose upper end is shaped like a horizontal
  • the jaws of said clamps 45 and 46 are provided with imprints suitable for blocking a mesh which is with its ends oriented respectively downwards or upwards. that is to say in the positions suitable for the two types of mesh; with two actuators 49 and 50 to move the support 44 and bring the vice 45 or 46 respectively in the locked position; with a clamp 51 located above the two vices 45 and 46, sliding vertically and adapted to bring the turns of the meshes against each other closer together and with a contrast tip 52 sliding horizontally in a support 53 and intended to penetrate between the end 1a and the central turn of the first mesh 1 'which has been meshed, in order to guarantee its locked position during the formation of the fixed mesh with the second mesh 1''of the module.
  • a machine S for helical mesh formation 1 associated with the machine for the formation of chains is similar to a machine for the production of spiral springs, and essentially comprises several motorized rollers 54 for the horizontal advancement of the metal wire 55 supplied by a coil (not shown) and of the predetermined diameter; two contrast tips 56 and 57, arranged in a vertical plane, at 45 ° to the direction of advancement of the wire, respectively above and below the latter, and with the concave end with circular profile to allow the bending of the wire in circles to the desired diameter; another tip 58 situated above and offset laterally with respect to said tips 56 and 57 to generate, with the wire bent in a circle, a helix of predetermined pitch, but generally equal to twice the diameter of the wire used; and finally a shear 59 for cutting each mesh in a helix with an angular development slightly less than two turns, for example of about 700 °.
  • the operation of a machine for the formation of ornamental chains with "Garibaldi modules” is as follows.
  • the clamp 35 of the section A for moving the free meshes is turned towards the machine S for forming the meshes and in the advanced position towards the outside under the effect of the thrust of the actuator 19 on the support 16;
  • the shaft 42 of the section B for blocking the assembled meshes is in the lowered position, the axis of the support 44 is oriented along the arrow F1 and in axis with the actuator 50 and the vice 45 is in the active gripping position, that is to say in the blocking position of the lower mesh of a "Garibaldi module" held in the vertical position and the upper mesh of which is in the mesh position.
  • the clamp 35 is then closed on the free end of the wire spiral 56 at the outlet of the machine S and a mesh 1 'of length slightly less than two turns is cut by the shears 59; after which the support 16 moves back and rotates 90 ° clockwise and simultaneously the actuator 20 brings the support 16 back to the advanced position, positioning the free end of the free mesh 1 ′ held by the clamp near the mesh 1 '' correspondent waiting for the mesh (see Fig. 11).
  • the support 22 then pivots upwards on the sector 23 by tilting the clamp-holder shaft 29 by about 20 ° in a vertical plane and the center of which is in correspondence with the end 1b of the free mesh 1 'to be mesh; then the clamp holder shaft 29 rotates about one and a half turns and advances about one and a half steps from the helix of the mesh, obtaining a free mesh of the two meshes concerned.
  • the rod 47 rises by opening the vice 45 and the actuator 49 advances the support 44 carrying the second clamp 46 in the gripping position; then the motor shaft 42 pivots clockwise until the axis of the support 44 is in the direction of the arrow F2, after which the shaft 42 and the support 44 are lifted to bring the vice 46 in correspondence with the 1 '' link of the chain located above.
  • the clamp 35 is then opened and returned to the rear inactive position and the shaft 12, by pivoting 90 ° counterclockwise, brings, in cooperation with the actuator 19, the clamp 35 open in correspondence with the machine S for forming a new 1 '' mesh to mesh (see Fig. 12).
  • the support 44 is lowered and the motor shaft 42 rotates clockwise until the axis of the support 44 is in the direction of the arrow F3; for its part, the clamp holder shaft 29 rotates clockwise by 90 ° and the support 16 advances to bring the end 1b of the new mesh 1 '' into the mesh position (see Fig. 13).
  • the shaft 29 is then tilted again by about 20 °; after which the clamp holder shaft 29 rotates and advances so as to embed the free ends of the mesh held by the clamp 35 between the corresponding end and the central turn of the mesh 1 'maintained and thus achieving a fixed mesh.
  • the vice 46 is opened and the motor shaft 42 rotates anti-clockwise to align the axis of the support 44 with that of the actuator 50 and allow the latter to return the clamp 45 to the position of taken.
  • the clamp holder shaft 29 then returns to the horizontal position; the motor shaft 42 is raised to allow the vice 45 to block the chain link above and the clamp 35 opens by abandoning the mesh; then it moves back to the rest position.
  • the shaft 12 rotates 90 ° counterclockwise and the actuator 19 returns the clamp 35 to the position of taking a new link; meanwhile, the motor shaft 42 is lowered to allow the start of a new training cycle for a "Garibaldi module".
  • this machine is easily adaptable to any type of helical mesh through the simple replacement of the clamps 45 and 46 and of the front cam 30 and some adjustments on the means of displacement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Adornments (AREA)
  • Jigs For Machine Tools (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Description

L'invention concerne un procédé pour la formation de chaînes avec des mailles en hélice cylindrique, pour des colliers, des bracelets, des ceintures et similaires, et une machine pour sa mise en oeuvre.The invention relates to a method for forming chains with cylindrical helical meshes, for necklaces, bracelets, belts and the like, and a machine for its implementation.

Il est connu que ces chaînes sont constituées de mailles en hélice cylindrique de longueur légèrement inférieure à deux spires et avec un pas égal au double de l'épaisseur du fil avec lequel elles sont réalisées. Actuellement, ces mailles sont assemblées à la main, c'est-à-dire unies entre-elles deux-à-deux, par rotation hélicoïdale d'une maille libre par rapport à une maille déjà assemblée en réalisant alternativement un maillage libre et un maillage fixe, c'est-à-dire un ensemble appelé "module Garibaldi".
Une chaîne ornementale à laquelle se rapporte l'invention est formée de plusieurs "modules Garibaldi".
Il est évident que la réalisation manuelle de ces chaînes nécessite beaucoup de temps et une grande habileté et précision de la part de l'opérateur; par conséquent, la production est limitée et le coût très élevé au point qu'elle est limitée à des chaînes en métal précieux tel que l'or ou l'argent.It is known that these chains consist of cylindrical helical meshes of length slightly less than two turns and with a pitch equal to twice the thickness of the wire with which they are made. Currently, these meshes are assembled by hand, that is to say united together in pairs, by helical rotation of a free mesh with respect to a mesh already assembled by alternately making a free mesh and a fixed mesh, that is to say a set called "Garibaldi module".
An ornamental chain to which the invention relates is formed by several "Garibaldi modules".
It is obvious that the manual production of these chains requires a great deal of time and great skill and precision on the part of the operator; consequently, production is limited and the cost very high to the point that it is limited to chains of precious metal such as gold or silver.

Il est connu d'après le document DE-A-3334449 un dispositif pour fabriquer une chaîne ornementale de mailles, pivotées à chaque fois de 90° et unies ainsi l'une avec l'autre, lequel comprend: des moyens pour former des maillee hélicoïdales avec un dispositif d'enroulement du fil d'alimentation, des moyens à pince pour retenir chaque maille et pour la mettre en mouvement et des moyens de coupe du fil de formation des mailles. Chacune des mailles hélicoïdales, qui est formée au fur et à mesure, est pivotée de 90°, puis unie à la maille précédente et enfin coupée.Document DE-A-3334449 discloses a device for manufacturing an ornamental chain of meshes, each pivoted by 90 ° and thus united with one another, which comprises: means for forming meshes helical with a device for winding the supply wire, gripper means for retaining each mesh and for setting it in motion and means for cutting the mesh forming wire. Each of the helical meshes, which is formed progressively, is pivoted by 90 °, then united with the previous mesh and finally cut.

Mais, à la suite de la soudure des mailles des chaînes fabriquées au moyen de ce dispositif connu, il est nécessaire de procéder à l'enlèvement, c'est-à-dire à la coupe, des parties d'extrémité qui dépassent de chaque maille, ce qui entraîne une augmentation du temps et du coût de fabrication des chaînes.However, following the welding of the chain links produced by means of this known device, it is necessary to remove, that is to say cut, the end parts which protrude from each mesh, which leads to an increase in the time and cost of manufacturing the chains.

La présente invention a pour but d'éliminer les inconvénients précités en proposant un procédé et une machine pour la formation automatique de ces chaînes avec des mailles en hélice de manière à augmenter la précision, la vitesse et la fiabilité de la production et donc à réduire de façon draconienne les coûts de fabrication.The object of the present invention is to eliminate the aforementioned drawbacks by proposing a method and a machine for the automatic formation of these chains with helical meshes so as to increase the precision, the speed and the reliability of the production and therefore to reduce drastically manufacturing costs.

Ce résultat a été atteint conformément à l'invention en concevant un procédé pour la formation de chaînes ornementales avec mailles en hélice cylindrique qui comprend, en séquence, les phases suivantes:

  • blocage de la maille inférieure d'un "module Garibaldi" formé précédemment;
  • prise d'une première maille libre à la sortie d'une machine de formation des mailles en hélice cylindrique;
  • positionnement de ladite première maille avec son axe longitudinal sensiblement orthogonal à celui de la maille supérieure dudit "module Garibaldi" de la chaîne précédemment formé pour lui conférer la position de maillage;
  • rotation de ladite première maille libre ainsi positionnée, autour de son axe d'environ un tour et demi et avancement simultané égal à environ deux pas de la spirale pour obtenir son maillage libre avec la derniere maille de la cheine;
  • abandon de ladite maille bloquée de la chaîne et blocage de celle située au-dessus;
  • abandon de la première maille qui a été maillée;
  • prise d'une deuxième maille libre de ladite machine d'alimentation des mailles;
  • positionnement de ladite deuxième maille libre en position de maillage avec ladite première maille qui a été assemblée;
  • rotation de ladite deuxième maille libre autour de son axe et avancement simultané pour obtenir un maillage fixe;
  • abandon de la maille bloquée de la chaîne et blocage de la maille située au-dessus;
  • abandon de ladite deuxième maille qui a été maillée.
This result was achieved in accordance with the invention by designing a process for the formation of ornamental chains with cylindrical helix meshes which comprises, in sequence, the following phases:
  • blocking of the lower mesh of a "Garibaldi module" formed previously;
  • taking of a first free mesh at the exit of a machine for forming meshes in a cylindrical helix;
  • positioning of said first mesh with its longitudinal axis substantially orthogonal to that of the upper mesh of said "Garibaldi module" of the chain previously formed to give it the mesh position;
  • rotation of said first free mesh thus positioned, about its axis by about one and a half turns and simultaneous advancement equal to about two steps of the spiral to obtain its free mesh with the last mesh of the chain;
  • abandonment of said blocked chain link and blocking of the one above;
  • abandonment of the first mesh that was meshed;
  • taking a second free mesh from said mesh feeding machine;
  • positioning said second free mesh in the mesh position with said first mesh which has been assembled;
  • rotation of said second free mesh around its axis and simultaneous advancement to obtain a fixed mesh;
  • abandonment of the blocked chain link and blocking of the chain above;
  • abandonment of said second mesh which has been meshed.

Les deux mailles ainsi unies constituent un nouveau "module Garibaldi" de la chaîne.
Le résultat en dessus a été aussi atteint conformement à l'invention en concevant une machine pour la formation de chaînes ornementales avec des mailles en hélice cylindrique qui suivant ledit procédé, comprend:

  • une première section pour les déplacements jusqu'au maillage des mailles libres, avec un support tournant autour d'un axe vertical, avec une pince pour la prise d'une maille libre provenant d'une machine de formation des mailles en hélice, ladite pince étant mobile horizontalement entre une reculée inactive, une position avancée de prise et une autre position avancée de positionnement de la maille libre par rapport à la maille de la chaîne qui a été maillée en dernier, et tournant en outre autour de son axe longitudinal et coulissant le long de celui-ci avec avancement simultané correspondant au pas de l'hélice de la maille pour permettre le maillage de la maille en prise;
  • une deuxième section pour le blocage de l'avant-dernière maille assemblée de la chaîne, avec un support tournant autour d'une axe vertical, avec deux étaux montés coulissants horizontalement sur ledit support et pourvus de mâchoires avec empreintes correspondant à une maille en hélice, avec les extrémités dirigées respectivement vers le bas ou vers le haut, et commandés pour être positionnés alternativement dans la position de blocage de la maille correspondante de la chaîne en cours de formation.
The two links thus united constitute a new "Garibaldi module" of the chain.
The above result was also achieved in accordance with the invention by designing a machine for the formation of ornamental chains with cylindrical helical meshes which, according to said method, comprises:
  • a first section for displacements to the mesh of the free meshes, with a support rotating around a vertical axis, with a clamp for gripping a free mesh coming from a helical mesh forming machine, said clamp being movable horizontally between an inactive retreat, an advanced gripping position and another advanced position for positioning the free link with respect to the chain link which was last meshed, and further rotating about its longitudinal and sliding axis along the latter with simultaneous advancement corresponding to the pitch of the helix of the mesh to allow the mesh of the mesh in engagement;
  • a second section for blocking the penultimate assembled link of the chain, with a support rotating around a vertical axis, with two vises slidably mounted horizontally on said support and provided with jaws with indentations corresponding to a helical link, with the ends directed respectively downwards or downwards high, and controlled to be positioned alternately in the blocking position of the corresponding link in the chain being formed.

Les avantages obtenus grâce à l'invention consistent essentiellement dans le fait qu'elle rend possible la formation automatique de chaînes composées de "modules Garibaldi"; qu'il est possible d'augmenter l'uniformité et la fiabilité du produit fini, tout en conservant une versatilité pour ce qui concerne les dimensions géométriques et la nature du matériau des mailles.The advantages obtained thanks to the invention essentially consist in the fact that it makes possible the automatic formation of chains composed of "Garibaldi modules"; that it is possible to increase the uniformity and reliability of the finished product, while retaining versatility with regard to the geometric dimensions and the nature of the mesh material.

Ces avantages et caractéristiques ainsi que d'autres seront plus et mieux compris de chaque homme du métier à la lumière de la description qui va suivre et à l'aide des dessins annexés donnés à titre d'exemplification pratique de l'invention, mais à ne pas considérer dans le sens limitatif; dessins sur lesquels:
   - la FIG. 1 représente une vue agrandie d'une maille en hélice pour chaîne ornementale à "modules Garibaldi"; la FIG. 2 représente la vue d'un maillage libre avec deux mailles de la FIG. 1; la FIG. 3 représente la vue d'un maillage fixe avec deux mailles de la FIG. 1; la FIG. 4 représente la vue d'un morceau de chaîne à "modules Garibaldi"; la FIG. 5 représente la vue en plan d'une machine pour la formation de chaînes conformément à l'invention, associée à une machine de formation des mailles en hélice; la FIG. 6 représente la vue en coupe suivant la ligne B-B de la Fig. 5; la FIG. 7 représente la vue en coupe suivant la ligne C-C de la Fig. 6; la FIG. 8 représente la vue de face d'un détail des moyens d'avancement de l'arbre porte-pince pour les mailles libres; la FIG. 9 représente la vue de face de la machine de formation des mailles indiquée dans la Fig. 5; la FIG. 10 représente la vue en plan schématique de la machine de la Fig. 5, dans la phase de prise de la première maille pour un "module Garibaldi", à partir d'une machine de formation des mailles; la FIG. 11 représente la machine de la Fig. 5 en position de maillage libre de la première maille du module avec la maille de la chaîne en formation qui a été maillée en dernier; la FIG. 12 représente la machine de la Fig. 5, dans la phase de prise de la deuxième maille pour le module, provenant de la machine de formation des mailles; la FIG. 13 représente la machine de la Fig. 5 en position de maillage fixe de la deuxième maille du module avec la première maille du module.These advantages and characteristics as well as others will be more and better understood by each person skilled in the art in the light of the description which follows and with the aid of the appended drawings given by way of practical example of the invention, but to do not consider in the limiting sense; drawings in which:
- FIG. 1 shows an enlarged view of a helical link for an ornamental chain with "Garibaldi modules"; FIG. 2 shows the view of a free mesh with two meshes of FIG. 1; FIG. 3 represents the view of a fixed mesh with two stitches in FIG. 1; FIG. 4 represents the view of a piece of chain with "Garibaldi modules"; FIG. 5 shows the plan view of a machine for forming chains according to the invention, associated with a helical mesh forming machine; FIG. 6 shows the sectional view along line BB of FIG. 5; FIG. 7 shows the sectional view along the line CC of FIG. 6; FIG. 8 shows the front view of a detail of the means for advancing the clamp holder shaft for the free meshes; FIG. 9 shows the front view of the mesh forming machine indicated in FIG. 5; FIG. 10 shows the schematic plan view of the machine of FIG. 5, in the phase of setting the first stitch for a "Garibaldi module", from a stitch forming machine; FIG. 11 shows the machine of FIG. 5 in the free mesh position of the first mesh of the module with the mesh of the chain in formation which was meshed last; FIG. 12 shows the machine of FIG. 5, in the setting phase of the second mesh for the module, coming from the mesh forming machine; FIG. 13 shows the machine of FIG. 5 in the fixed mesh position of the second mesh of the module with the first mesh of the module.

Sur la Fig. 1 est représentée une maille en hélice 1 à partir de laquelle est formée une chaîne à "modules Garibaldi"; cette maille est réalisée, avec des moyens connus, à partir d'un fil métallique, de nature et de diamètre prédéterminés, courbé en hélice avec un pas à peine supérieure à deux fois le diamètre du fil et coupé de manière à obtenir des mailles de longueur légèrement inférieure à deux spires, c'est-à-dire d'environ 700° entre les deux extrémités 1a et 1b qui se trouvent toujours dirigées vers le bas.In Fig. 1 is shown a helical link 1 from which a chain with "Garibaldi modules" is formed; this mesh is made, with known means, from a wire metallic, of predetermined nature and diameter, bent in a helix with a pitch barely more than twice the diameter of the wire and cut so as to obtain meshes of length slightly less than two turns, that is to say approximately 700 ° between the two ends 1a and 1b which are always directed downwards.

En référence aux Fig. 2 à 4 des dessins annexés, le procédé de formation de chaînes à "modules Garibaldi" conformément à l'invention, comprend, en séquence, les phases suivantes:

  • blocage de la maille inférieure 1' du dernier "module Garibaldi" formé précédemment, en maintenant la maille supérieure 1'' avec l'axe horizontal et avec les extrémités 1a et 1b orientées vers le bas; et séparément:
  • prise d'une première maille libre 1' dans la position dans laquelle elle se trouve à la sortie d'une machine S pour la formation des mailles en hélice 1, et c'est-à-dire avec l'axe horizontal et les deux extrémités 1a et 1b dirigées vers le bas;
  • positionnement de ladite première maille 1' de manière à ce que son axe longitudinal soit à peu près orthogonal à celui de la dernière maille 1'' de la chaîne en formation et avec l'extrémité libre 1b dans la position de maillage avec la maille 1'';
  • rotation de ladite maille libre 1' autour de son axe, dans le sens de l'hélice, d'environ un tour et demi et avancement simultané d'environ un pas et demi de l'hélice pour obtenir un maillage avec la maille située au-dessous 1'', du type libre (voir Fig. 2);
  • abandon de ladite maille bloquée 1' et blocage de la maille 1'' de la chaîne située au-dessus;
  • abandon de la première maille 1' qui a été maillée;
  • prise d'une deuxième maille libre 1'' à la sortie de la machine de formation des mailles;
  • positionnement de ladite deuxième maille 1'' en avec son axe orthogonal à celui de ladite maille 1' déjà maillée, et avec l'extrémité libre 1b dans la position de maillage avec cette dernière 1';
  • rotation de ladite deuxième maille 1'' dans le sens de l'hélice d'environ un tour et avancement simultané égal à environ un pas de l'hélice, de manière à ce que les extrémités 1a et 1b se trouvent dirigées vers le bas, en réalisant un maillage fixe (Fig. 3);
  • abandon de ladite maille 1'' de la chaîne et blocage de la première maille 1' qui a été maillée;
  • abandon de la deuxième maille 1'' qui a été maillée.
With reference to Figs. 2 to 4 of the accompanying drawings, the process for forming chains with "Garibaldi modules" in accordance with the invention, comprises, in sequence, the following phases:
  • blocking of the lower mesh 1 'of the last "Garibaldi module" formed previously, maintaining the upper mesh 1''with the horizontal axis and with the ends 1a and 1b oriented downwards; and separately:
  • taking of a first free mesh 1 'in the position in which it is at the outlet of a machine S for the formation of helical meshes 1, and that is to say with the horizontal axis and the two ends 1a and 1b directed downwards;
  • positioning of said first link 1 'so that its longitudinal axis is roughly orthogonal to that of the last link 1''of the chain in formation and with the free end 1b in the mesh position with link 1 '';
  • rotation of said free mesh 1 'around its axis, in the direction of the helix, of about one and a half turns and simultaneous advancement of about one and a half steps of the helix to obtain a mesh with the mesh located at - below 1 '', free type (see Fig. 2);
  • abandonment of said blocked mesh 1 'and blocking of mesh 1''of the chain located above;
  • abandonment of the first mesh 1 'which has been meshed;
  • taking a second free mesh 1 '' at the exit of the mesh forming machine;
  • positioning of said second mesh 1 '' with its axis orthogonal to that of said mesh 1 'already meshed, and with the free end 1b in the mesh position with the latter 1';
  • rotation of said second mesh 1 '' in the direction of the helix by about one turn and simultaneous advancement equal to approximately one pitch of the helix, so that the ends 1a and 1b are directed downwards, by making a fixed mesh (Fig. 3);
  • abandonment of said 1 '' mesh of the chain and blocking of the first 1 'mesh which has been meshed;
  • abandonment of the second 1 '' mesh which was meshed.

Avantageusement, conformément à l'invention, il est prévu de garantir le maillage libre de la première maille libre 1' en procédant en deux temps, c'est-à-dire avec une rotation de la maille d'un tour et un avancement d'un pas de l'hélice suivis par le rapprochement supérieur des spires de la maille et par une rotation suplémentaire de la maille d'environ un demi-tour, et de garantir le maillage fixe de la deuxième maille libre 1'', en procédant à la fixation de la première maille 1' déjà maillée. Et pour faciliter ultérieurement le maillage des mailles 1' et 1'', il est prévu, conformément à l'invention, de maintenir l'axe de la maille légèrement incliné vers l'avant et vers le bas en phase de maillage.Advantageously, in accordance with the invention, provision is made to guarantee the free mesh of the first free mesh 1 ′ by proceeding in two stages, that is to say with a rotation of the mesh of one revolution and an advancement d 'a pitch of the propeller followed by the upper approximation of the turns of the mesh and by an additional rotation of the mesh of about half a turn, and to guarantee the fixed mesh of the second free mesh 1'', by proceeding fixing the first mesh 1 'already meshed. And to later facilitate the mesh of 1 'and 1''meshes, it is planned, in accordance with the invention, to maintain the axis of the mesh slightly inclined forwards and downwards during the meshing phase.

Selon une forme de réalisation préférée, une machine pour la mise en oeuvre dudit procédé conformément à l'invention et en référence aux Fig. 5 à 8 des dessins annexés, est constituée de:

  • une première section (A) pour les déplacements d'une maille libre et jusqu'au maillage avec la maille de la chaîne en cours de formation qui a été maillée en dernier, et qui comprend:
  • un arbre vertical 12 asservi à un dispositif moteur 11, et avec un support horizontal supérieur 13;
  • une glissière horizontale 15 solidaire dudit support 13, avec un coulisseau 16 pour un groupe porte-pince 17. Ledit coulisseau présente un contour circulaire avec deux planages 18 diamétralement opposés, coopérant avec deux actionneurs de poussée 19 et 20 disposés horizontalement à 90° l'un par rapport à l'autre, qui provoquent l'avancement du coulisseau 16 avec le porte-pince: le retour en arrière du coulisseau 16 étant obtenu au moyen d'un ressort (non représenté) inséré entre le coulisseau 16 et la glissière 15;
  • un groupe porte-pince avec un support 22 coulissant sur un secteur circulaire vertical 23 fixé sur ledit coulisseau 16 avec un arbre horizontal 29 dont l'extrémité libre porte une pince 35 et qui est monté coulissant axialement sur ledit support 22 et qui est entraîné en rotation par un arbre moteur 25 au moyen d'un train d'engrenages 26, 27 et 28 avec un rapport de transmission de 2:1; avec une came frontale 30, fixée à l'extrémité de l'arbre moteur 25, qui commande l'avancement de l'arbre 29 au moyen d'un poussoir 32 et d'un levier 31. Le développement du profil actif de la camme 30 est d'environ 270° qui correspondent à une rotation de l'arbre porte-pince 29 d'environ 540°: le retour en arrière de l'arbre 29 étant obtenu au moyen d'un ressort 33.
According to a preferred embodiment, a machine for implementing said method in accordance with the invention and with reference to FIGS. 5 to 8 of the attached drawings, consists of:
  • a first section (A) for the displacements of a free mesh and up to the mesh with the mesh of the chain being formed which was meshed last, and which comprises:
  • a vertical shaft 12 controlled by a motor device 11, and with an upper horizontal support 13;
  • a horizontal slide 15 secured to said support 13, with a slide 16 for a clamp holder group 17. Said slide has a circular outline with two diametrically opposed planes 18, cooperating with two thrust actuators arranged horizontally at 90 ° l ' relative to each other, which cause the slide 16 to move forward with the clamp holder: the backward movement of the slide 16 being obtained by means of a spring (not shown) inserted between the slide 16 and the slide 15 ;
  • a clamp holder group with a support 22 sliding on a vertical circular sector 23 fixed on said slide 16 with a horizontal shaft 29 whose free end carries a clamp 35 and which is slidably mounted axially on said support 22 and which is rotated by a drive shaft 25 by means of a gear train 26, 27 and 28 with a transmission ratio of 2: 1; with a front cam 30, fixed to the end of the motor shaft 25, which controls the advancement of the shaft 29 by means of a pusher 32 and a lever 31. The development of the active profile of the cam 30 is around 270 ° which correspond to a rotation of the clamp holder shaft 29 of around 540 °: the backward movement of the shaft 29 being obtained by means of a spring 33.

Avantageusement, ladite pince 35 a ses mâchoires pourvues d'une empreinte adaptée pour recevoir une maille en hélice de forme et dimensions correspondant à celles de la maille 1.
En outre, l'axe desdites mâchoires est parallèle à celui de l'arbre 29 et distant de celui-ci d'une valeur égale au rayon de la maille pour permettre le mouvement hélicoîdal pendant le maillage.
L'ouverture automatique des mâchoires de la pince 35 est obtenue au moyen d'un ressort, au moment où une tige 36 avec tête en forme de coin libère la pince.Advantageously, said clamp 35 has its jaws provided with an imprint adapted to receive a helical mesh of shape and dimensions corresponding to those of mesh 1.
In addition, the axis of said jaws is parallel to that of the shaft 29 and distant from the latter by a value equal to the radius of the mesh to allow helical movement during meshing.
The automatic opening of the jaws of the clamp 35 is obtained by means of a spring, at the moment when a rod 36 with wedge-shaped head releases the clamp.

Une deuxième section (B) pour le blocage de l'avant-dernière maille assemblée de la chaîne en formation, avec un support à manchon 41 fixé sur une plaque de base et dans lequel est logé un arbre creux vertical 42 motorisé et dont l'extrémité supérieure est conformée en glissière horizontale 43 pour un coulisseau 44 de support de deux étaux 45 et 46 articulés, juxtaposés dans la direction de coulissement, et positionnables alternativement dans la position de blocage et de déblocage de la maille correspondante, c'est-à-dire sur l'axe vertical 22 de rotation du coulisseau 44 et de l'arbre 42 dans la cavité duquel descend la chaîne en cours de formation; avec une tige creuse 47, enfilée dans l'arbre 42, pourvue d'une tête en forme de coin 48 pour agir sur le bras des étaux 45 et 46, et, en outre, coulissant verticalement sous l'action d'un actionneur E entre une position supérieure d'ouverture des mâchoires et une position inférieure de fermeture de celles-ci.
Les mâchoires desdits étaux 45 et 46 sont pourvues d'empreintes adaptées pour le blocage d'une maille qui se trouve avec ses extrémités orientées respectivement vers le bas ou vers le haut. c'est-à-dire dans les positions adaptées pour les deux types de maillage; avec deux actionneurs 49 et 50 pour déplacer le support 44 et amener respectivement l'étau 45 ou 46 en position de blocage; avec une pince 51 située au-dessus des deux étaux 45 et 46, coulissant verticalement et adaptée pour rapprocher l'une contre l'autre les spires des mailles en cours de maillage et avec une pointe de contraste 52 coulissant horizontalement dans un support 53 et destinée à pénétrer entre l'extrémité 1a et la spire centrale de la première maille 1' qui a été maillée, pour garantir sa position bloquée pendant la formation du maillage fixe avec la deuxième maille 1'' du module.A second section (B) for blocking the penultimate link of the chain being formed, with a sleeve support 41 fixed on a base plate and in which is housed a vertical hollow shaft 42 motorized and whose upper end is shaped like a horizontal slide 43 for a slide 44 for supporting two articulated clamps 45 and 46, juxtaposed in the sliding direction, and alternately positionable in the locking and unlocking position of the corresponding mesh, that is to say on the vertical axis 22 of rotation of the slide 44 and of the shaft 42 in the cavity of which the chain descends during formation; with a hollow rod 47, threaded into the shaft 42, provided with a wedge-shaped head 48 to act on the arm of the clamps 45 and 46, and, moreover, sliding vertically under the action of an actuator E between an upper position for opening the jaws and a lower position for closing the jaws.
The jaws of said clamps 45 and 46 are provided with imprints suitable for blocking a mesh which is with its ends oriented respectively downwards or upwards. that is to say in the positions suitable for the two types of mesh; with two actuators 49 and 50 to move the support 44 and bring the vice 45 or 46 respectively in the locked position; with a clamp 51 located above the two vices 45 and 46, sliding vertically and adapted to bring the turns of the meshes against each other closer together and with a contrast tip 52 sliding horizontally in a support 53 and intended to penetrate between the end 1a and the central turn of the first mesh 1 'which has been meshed, in order to guarantee its locked position during the formation of the fixed mesh with the second mesh 1''of the module.

En référence à la Fig. 9 des dessins annexés, une machine S de formation des mailles en hélice 1 associée à la machine pour la formation de chaînes selon l'invention, est similaire à une machine pour la production de ressorts en spirale, et comprend essentiellement plusieurs rouleaux motorisés 54 pour l'avancement horizontal du fil métallique 55 fourni par une bobine (non représentée) et du diamètre prédéterminé; deux pointes de contraste 56 et 57, disposées dans un plan vertical, à 45° par rapport à la direction d'avancement du fil, respectivement au-dessus et au-dessous de celui-ci, et avec l'extrémité concave à profil circulaire pour permettre le courbement en rond du fil selon le diamètre désiré; une autre pointe 58 située au-dessus et décalée latèralement par rapport auxdites pointes 56 et 57 pour engendrer, avec le fil plié en rond, une hélice de pas prédéterminé, mais en général égal à deux fois le diamètre du fil utilisé; et enfin une cisaille 59 pour couper chaque maille en hélice avec un développement angulaire légèrement inférieur à deux spires, par exemple d'environ 700°.With reference to FIG. 9 of the accompanying drawings, a machine S for helical mesh formation 1 associated with the machine for the formation of chains according to the invention, is similar to a machine for the production of spiral springs, and essentially comprises several motorized rollers 54 for the horizontal advancement of the metal wire 55 supplied by a coil (not shown) and of the predetermined diameter; two contrast tips 56 and 57, arranged in a vertical plane, at 45 ° to the direction of advancement of the wire, respectively above and below the latter, and with the concave end with circular profile to allow the bending of the wire in circles to the desired diameter; another tip 58 situated above and offset laterally with respect to said tips 56 and 57 to generate, with the wire bent in a circle, a helix of predetermined pitch, but generally equal to twice the diameter of the wire used; and finally a shear 59 for cutting each mesh in a helix with an angular development slightly less than two turns, for example of about 700 °.

En référence aux Fig. 10 à 13 des dessins annexés, le fonctionnement d'une machine pour la formation de chaînes ornementales à "modules Garibaldi" selon l'invention est le suivant. Dans la position initiale, représentée sur la Fig. 10, la pince 35 de la section A de déplacement des mailles libres est tournée vers la machine S de formation des mailles et en position avancée vers l'extérieur sous l'effect de la poussée de l'actionneur 19 sur le support 16; l'arbre 42 de la section B de blocage des mailles assemblées est en position abaissée, l'axe du support 44 est orienté suivant la flèche F1 et en axe avec l'actionneur 50 et l'étau 45 est en position active de prise, c'est-à-dire en position de blocage de la maille inférieure d'un "module Garibaldi" tenu en position verticale et dont la maille supérieure est en position de maillage. La pince 35 est alors fermée sur l'extrémité libre de la spirale de fil métallique 56 à la sortie de la machine S et une maille 1' de longueur légérement inférieure à deux spires est coupée par la cisaille 59; après quoi le support 16 recule et tourne de 90° dans le sens horaire et simultanément l'actionneur 20 ramène le support 16 en position avancée, en positionnant l'extrémité libre de la maille libre 1' tenue par la pince à proximité de la maille 1'' correspondante en attente du maillage (voir Fig. 11). Le support 22 pivote alors vers le haut sur le secteur 23 en inclinant l'arbre porte-pince 29 d'environ 20° dans un plan vertical et dont le centre est en correspondance de l'extrémité 1b de la maille libre 1' devant être maillée; ensuite l'arbre porte-pince 29 tourne d'environ un tour et demi et avance d'environ un pas et demi de l'hélice de la maille en obtenant un maillage libre des deux mailles concernées. Entretemps, la tige 47 monte en ouvrant l'étau 45 et l'actionneur 49 fait avancer le support 44 portant la deuxième pince 46 en position de prise; ensuite l'arbre moteur 42 pivote dans le sens horaire jusqu'à ce que l'axe du support 44 se trouve dans la direction de la flèche F2, après quoi l'arbre 42 et le support 44 sont soulevés pour amener l'étau 46 en correspondance de la maille 1'' de la chaîne située au-dessus. La pince 35 est alors ouverte et ramenée en position inactive arrière et l'arbre 12, en pivotant de 90° dans le sens anti-horaire, amène, en coopération avec l'actionneur 19, la pince 35 ouverte en correspondance de la machine S de formation des mailles pour prélever une nouvelle maille 1'' à mailler (voir Fig. 12). A ce moment le support 44 est abaissé et l'arbre moteur 42 tourne dans le sens horaire jusqu'à ce que l'axe du support 44 se trouve dans la direction de la flèche F3; de son côté, l'arbre porte-pince 29 tourne dans le sens horaire de 90° et le support 16 avance pour amener l'extrémité 1b de la nouvelle maille 1'' en position de maillage (voir Fig. 13). L'arbre 29 est alors de nouveau incliné d'environ 20°; après quoi l'arbre porte-pince 29 tourne et avance de manière à encastrer les extrémités libres de la maille tenue par la pince 35 entre l'extrémité correspondante et la spire centrale de la maille 1' maintenue et en réalisant ainsi un maillage fixe. Ensuite l'étau 46 est ouvert et l'arbre moteur 42 tourne dans le sens anti-horaire pour aligner l'axe du support 44 avec celui de l'actionneur 50 et permettre à celui-ci de ramener la pince 45 dans la position de prise. L'arbre porte-pince 29 revient alors en position horizontale; l'arbre moteur 42 se soulève pour permettre à l'étau 45 de bloquer la maille de la chaîne située au-dessus et la pince 35 s'ouvre en abandonnant la maille; ensuite elle recule en position de repos.
Enfin, l'arbre 12 tourne de 90° dans le sens anti-horaire et l'actionneur 19 ramène la pince 35 en position de prise d'une nouvelle maille; entretemps, l'arbre moteur 42 s'abaisse pour permettre le démarrage d'un nouveau cycle de formation d'un "module Garibaldi".With reference to Figs. 10 to 13 of the accompanying drawings, the operation of a machine for the formation of ornamental chains with "Garibaldi modules" according to the invention is as follows. In the initial position, shown in FIG. 10, the clamp 35 of the section A for moving the free meshes is turned towards the machine S for forming the meshes and in the advanced position towards the outside under the effect of the thrust of the actuator 19 on the support 16; the shaft 42 of the section B for blocking the assembled meshes is in the lowered position, the axis of the support 44 is oriented along the arrow F1 and in axis with the actuator 50 and the vice 45 is in the active gripping position, that is to say in the blocking position of the lower mesh of a "Garibaldi module" held in the vertical position and the upper mesh of which is in the mesh position. The clamp 35 is then closed on the free end of the wire spiral 56 at the outlet of the machine S and a mesh 1 'of length slightly less than two turns is cut by the shears 59; after which the support 16 moves back and rotates 90 ° clockwise and simultaneously the actuator 20 brings the support 16 back to the advanced position, positioning the free end of the free mesh 1 ′ held by the clamp near the mesh 1 '' correspondent waiting for the mesh (see Fig. 11). The support 22 then pivots upwards on the sector 23 by tilting the clamp-holder shaft 29 by about 20 ° in a vertical plane and the center of which is in correspondence with the end 1b of the free mesh 1 'to be mesh; then the clamp holder shaft 29 rotates about one and a half turns and advances about one and a half steps from the helix of the mesh, obtaining a free mesh of the two meshes concerned. Meanwhile, the rod 47 rises by opening the vice 45 and the actuator 49 advances the support 44 carrying the second clamp 46 in the gripping position; then the motor shaft 42 pivots clockwise until the axis of the support 44 is in the direction of the arrow F2, after which the shaft 42 and the support 44 are lifted to bring the vice 46 in correspondence with the 1 '' link of the chain located above. The clamp 35 is then opened and returned to the rear inactive position and the shaft 12, by pivoting 90 ° counterclockwise, brings, in cooperation with the actuator 19, the clamp 35 open in correspondence with the machine S for forming a new 1 '' mesh to mesh (see Fig. 12). At this time the support 44 is lowered and the motor shaft 42 rotates clockwise until the axis of the support 44 is in the direction of the arrow F3; for its part, the clamp holder shaft 29 rotates clockwise by 90 ° and the support 16 advances to bring the end 1b of the new mesh 1 '' into the mesh position (see Fig. 13). The shaft 29 is then tilted again by about 20 °; after which the clamp holder shaft 29 rotates and advances so as to embed the free ends of the mesh held by the clamp 35 between the corresponding end and the central turn of the mesh 1 'maintained and thus achieving a fixed mesh. Then the vice 46 is opened and the motor shaft 42 rotates anti-clockwise to align the axis of the support 44 with that of the actuator 50 and allow the latter to return the clamp 45 to the position of taken. The clamp holder shaft 29 then returns to the horizontal position; the motor shaft 42 is raised to allow the vice 45 to block the chain link above and the clamp 35 opens by abandoning the mesh; then it moves back to the rest position.
Finally, the shaft 12 rotates 90 ° counterclockwise and the actuator 19 returns the clamp 35 to the position of taking a new link; meanwhile, the motor shaft 42 is lowered to allow the start of a new training cycle for a "Garibaldi module".

Il va de soi que cette machine est facilement adaptable à n'importe quel type de maille en hélice à travers le simple remplacement des étaux 45 et 46 et de la came frontale 30 et quelques réglages sur les moyens de déplacement.It goes without saying that this machine is easily adaptable to any type of helical mesh through the simple replacement of the clamps 45 and 46 and of the front cam 30 and some adjustments on the means of displacement.

Claims (7)

  1. Process for producing ornamental chains with cylindrical helical links, consisting of clamping the lower link (1') of a 'Garibaldi module' (1', 1'') previously produced and arranged in a vertical position; taking a first link (1') at the output of a machine (S) producing cylindrical helical links with the longitudinal axis horizontal and the free ends (1a, 1b) directed downwards; with its longitudinal axis orthogonal to that of the upper link (1'') of the 'Garibaldi module' (1', 1'') and with the free end (1b) in the linking position with its medial turn (1''), characterized by the fact that it includes the following phases, in sequence:
    - rotation of the said first link (1') in the direction of its helix through a turn and a half and simultaneously advancing it by a pitch and a half of the said helix to obtain a free linkage with the link (1'') of the said 'Garibaldi module';
    - releasing the lower link (1') of the said 'Garibaldi module' and clamping of the upper link (1'');
    - releasing the said first link (1') which has been linked in the free manner;
    - taking a second free link (1'') from the output of the said machine (S) producing the links;
    - positioning the said second link (1'') with its longitudinal axis orthogonal to that of the link (1') linked before and with the free end (1b) in the linking position to the median turn of the said link (1');
    - rotation of the said second link (1'') in the direction of its helix through one turn and simultaneous advance by one pitch of the helix, to enable one to achieve fixed linkage;
    - releasing the upper link (1'') of the 'Garibaldi module' previously produced and clamping of the link (1') which was first linked;
    - releasing the link (1'') which was linked second,
  2. Machine for producing ornamental chains with cylindrical helical links according to the process of claim 1, including means for retaining and for displacing the characterized links where the said means include:
    - a first section (A) for the displacement of each free link (1', 1'') up to their linking with the corresponding link of the chain in course of production which has been linked last, with a vertical motor shaft (12) supporting a horizontal slide (15) for a slider (16) carrying a grip support unit (17), sliding horizontally between an active withdrawn position and two forward positions, for taking the free link from a machine producing links (S) and for positioning the said free link in a linking position, respectively, with a grip (35) for taking the free link (1', 1'') and provided with a helical forward movement along its longitudinal axis, to achieve linkage with the last corresponding link of the chain being produced;
    - a second section (B) for clamping the last but one link of the chain being produced, with a vertical motorized shaft (42) sliding axially (43) for a slider (44) provided with two separate vices (45, 46) and moving in the appropriate manner to position the said vices separately in the position for taking a corresponding link of the chain being produced.
  3. Machine according to claim 2, characterized by the fact that for the displacement of the said slider (16) of section (A), it includes two push actuators (19, 20) which act on the edge of the slider (16), one (19) for positioning the grip (35) in the forward position for taking the links (1' 1'') at the output of the machine (S) for producing the links, the other (20) for positioning the grip (35) in the forward position of linkage: means for backward movement being provided to return the slider (16) to the inactive position.
  4. Machine according to claim 2, characterized by the fact that the said grip support unit (17) of section (A) includes a support (22) mounted sliding on a vertical circular sector (23) with its centre corresponding to the front end (lb) of the link being linked; a horizontal shaft (29) carrying the grip (35) at its head and where the rotation movement is obtained from a motor (25) by means of a gear train (26-28) with a transmission ratio of 2:1 and where the forward movement with a pitch equal to that of the link helix is obtained from the same motor shaft (25) by means of a front cam (30) mounted in front of the motor shaft (25) and by a lever (31) acting on the rear of the grip support shaft (29), with the interposition of a pusher (32).
  5. Machine according to claim 2, characterized by the fact that the said vices (45, 46) have their jaws provided with moulds suitable for clamping a helical link with the free ends (1a, 1b) directed downwards and upwards respectively.
  6. Machine according to claim 2, characterized by the fact that to operate the said vices (45, 46) it includes a rod (48) with a wedge-shaped head (47) sliding vertically between a low position and a high position, for opening and closing the jaws respectively.
  7. Machine according to claim 2, characterized by the fact that for alternate positioning of the vices (45, 46) in the active position for taking the link corresponding to the 'Garibaldi module', it includes two push actuators (50, 51) acting on the slider (44) in two directions corresponding to the axis of displacement of the slider (44).
EP90830009A 1989-01-24 1990-01-11 Method and apparatus for making ornamental chains with cylindrical helix links Expired - Lifetime EP0380452B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8909321A IT1233139B (en) 1989-01-24 1989-01-24 METHOD AND MACHINE FOR THE FORMATION OF ORNAMENTAL CHAINS WITH CYLINDRICAL PROPELLER LINKS
IT932189 1989-01-24

Publications (3)

Publication Number Publication Date
EP0380452A2 EP0380452A2 (en) 1990-08-01
EP0380452A3 EP0380452A3 (en) 1991-06-05
EP0380452B1 true EP0380452B1 (en) 1993-12-15

Family

ID=11128416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830009A Expired - Lifetime EP0380452B1 (en) 1989-01-24 1990-01-11 Method and apparatus for making ornamental chains with cylindrical helix links

Country Status (5)

Country Link
US (1) US5092120A (en)
EP (1) EP0380452B1 (en)
DE (1) DE69005134T2 (en)
ES (1) ES2049455T3 (en)
IT (1) IT1233139B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329030C (en) * 1918-11-07 1920-11-13 Karl Bosch Jr Method and device for the machine production of French chains
US2617250A (en) * 1949-09-24 1952-11-11 Kunzmann Chain Co Double-link chain machine
GB1547584A (en) * 1976-05-28 1979-06-20 Janne J Machine for forming a decorative chain
DE3334449A1 (en) * 1983-09-23 1985-04-11 Fico Fischer & Co Maschinenbau GmbH, 7537 Remchingen Method and device for making a jewellery link chain
IT1207830B (en) * 1987-02-06 1989-06-01 C M S S R L Costruzione Macchi APPARATUS FOR THE PRODUCTION OF ORNAMENTAL CHAINS OF THE TYPE KNOWN AS PEACOCK EYE.

Also Published As

Publication number Publication date
IT8909321A0 (en) 1989-01-24
ES2049455T3 (en) 1994-04-16
IT1233139B (en) 1992-03-14
DE69005134D1 (en) 1994-01-27
EP0380452A3 (en) 1991-06-05
EP0380452A2 (en) 1990-08-01
DE69005134T2 (en) 1994-05-19
US5092120A (en) 1992-03-03

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