EP0808677B1 - Dispositif pour la fabrication automatique de bagues de compression avec une fermeture à liaison de forme - Google Patents

Dispositif pour la fabrication automatique de bagues de compression avec une fermeture à liaison de forme Download PDF

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Publication number
EP0808677B1
EP0808677B1 EP97107392A EP97107392A EP0808677B1 EP 0808677 B1 EP0808677 B1 EP 0808677B1 EP 97107392 A EP97107392 A EP 97107392A EP 97107392 A EP97107392 A EP 97107392A EP 0808677 B1 EP0808677 B1 EP 0808677B1
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EP
European Patent Office
Prior art keywords
blank
core member
machine
connecting means
slide members
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Expired - Lifetime
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EP97107392A
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German (de)
English (en)
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EP0808677A1 (fr
Inventor
Hans Oetiker
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Oetiker Schweiz AG
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Hans Oetiker AG Maschinen und Apparatefabrik
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool

Definitions

  • This invention relates to a method and a machine for automatically manufacturing compression rings from a flat blank, according to the preambles of claims 1 and 13 respectively, with a mechanical connection, preferably of the puzzle-lock type.
  • Shrinkable compression rings are known in the art which, for the most part, have been made by cutting off rings from tubular stock of various materials. These rings were compressed or shrunk by various means, such as mechanical means, magnetic means, hydraulic means, etc.
  • US-A-1,924,230 discloses a method for automatically manufacturing a bushing from a flat blank with the steps set forth in the first part of claim 1 and a machine with the features set forth the first part of claim 13. The ends of the blank are not connected in the finished bushing.
  • US-A-4,543,297 discloses a method of making a ring from a flat blank in a single deformation step at the end of which mating end portions of the blank are brought to engage each other to form a puzzle-lock type connection.
  • a feed station continuously feeds the flat band from a reel to a stamping station where one end portion of a blank with a mechanical connection, preferably of the puzzle-lock type, is stamped out so that each blank requires two successive cuts which then form cuts of complementary puzzle-lock configuration at opposite ends of the blank.
  • the blank is thereupon fed to the deformation station where the flat blank is moved transversely to its feed direction into the bending machine, properly speaking.
  • the bending machine has three successive positions in the transverse or axial direction of its core member about which the flat blank is deformed, and includes a number of slide members which are mechanically driven from cams.
  • the flat blank In a first position, the flat blank is predeformed into a shape approximating the shape of the finished compression ring with the free end portions of the blank predeformed accurately into a shape necessary to permit closing of the mechanical connection at the free end potions of the blank in the second position.
  • the closed compression ring now exhibiting its predetermined diametric dimension, is then subjected in a third position to a swaging operation to improve the locking action and holding ability of the mechanical connection against inadvertent reopening during transport and/or during subsequent use.
  • the completed compression ring Upon completion of the various operating steps, the completed compression ring is then ejected.
  • the stamping die preferably produces a cut resembling a puzzle lock when severing adjacent band portions.
  • the stamping die is so constructed that the mutually facing male and female ends resulting from a stamping operation are again partly reconnected after initial complete separation in order to permit continuation of the feed of two or more successive blanks, each of which requires two cuts spaced in the longitudinal direction as a function of the compression ring size.
  • the speed of the continuous feed from the reel to the stamping station and the speed of the intermittent feed from the stamping station to the bending or deforming station are so correlated, preferably with the use of a slack between the reel and the stamping station that the continuous and intermittent feed are properly coordinated to feed the same length of band material within a given cycle of operation.
  • the machine preferably includes a straightening device of conventional construction including, for example, pressure rollers arranged staggered and in two rows to remove any curls, kinks or bends from the band resulting from the reeling operation before the band reaches the stamping station.
  • a straightening device of conventional construction including, for example, pressure rollers arranged staggered and in two rows to remove any curls, kinks or bends from the band resulting from the reeling operation before the band reaches the stamping station.
  • An oiling device of any conventional construction just ahead of the stamping die assures sufficient lubrication of both sides of the band as required by the stamping die before the band reaches the stamping station.
  • reference numeral 10 generally designates the feed station for the continuous feed of the band which includes a reel 11 with band material coiled thereon.
  • the reel 11 is rotated by a drive mechanism 12 including drive rollers 13.
  • a straightener unit 14 includes upper pressure rollers 15 and lower pressure rollers 15', preferably arranged staggered to one another, which are intended to remove any curls, kinks or bends in the band that may have occurred during coiling of the band on the reel 11.
  • a feed unit 16 providing a continuous feed of the band 111 and including upper feed rollers 17 and lower feed rollers 17' of conventional construction.
  • a control unit 18 of conventional construction electronically controls the operation of the various parts of the machine.
  • the speed of the roller members 13 is thereby controlled by a lever arm 19 having a follower member 19' riding on the band 111 and connected with a potentiometer so as to control the speed of the roller members 13 by way of line 18a.
  • a slack control unit generally designated by reference numeral 20, schematically shown in the drawing, controls the maximum and minimum slack 111'' and 111' in the band, necessitated by the use of a continuous feed in the feed station 10 as contrasted to the intermittent feed of the band required for the stamping operation in the stamping station 40 to enable stamping of the puzzle lock during standstill of the band.
  • the slack control unit 20 may be of any conventional construction and may include, for example, two upright members 22a and 22b interconnected at the top and fixedly secured at the bottom at 23 .
  • a limit switch 24 is thereby connected to the upper part of the upright member 22b whose switch mechanism is actuated by a downwardly extending probe member 25 adapted to engage with the slack when the slack 111' reaches its predetermined minimum slack to actuate the switch in switch mechanism 24 and feed the information to the control unit 18 by way of line 24a to speed up the continuous feed.
  • the maximum predetermined slack also is sensed by a limit switch, for example, by a metallic plate member 26 insulated with respect to ground and mounted in predetermined position, preferably adjustably on upright members 22a and 22b, whereby wires 27a and 27b are mounted over the upright members 22a and 22b.
  • the band 111 is normally electrically grounded by any conventional means so that with a slack 111'' exceeding the maximum intended slack, it will apply ground to the plate member 26 , previously insulated with respect to ground, whereby grounding of the plate member 26 is applied to the control unit by way of connector 28 and line 28a causing the continuous feed to slow down.
  • An intermittent feed unit generally designated by reference numeral 30 provides intermittent feed of the band 111 to the stamping unit generally designated by reference numeral 40 by way of an oiling device generally designated by reference numeral 35 which lubricates the upper and lower surface of the band from a reservoir 36 by way of line 37 and branch lines 38 and 39 as required by the stamping die.
  • the oiling device 35 is thereby located as close to the stamping unit 40 as possible.
  • the stamping unit 40 includes a ram member 41 and a fixed base member 42 which fixedly supports upright, column-like guide members 43 about which the ram member 41 is reciprocably supported by means of the short support members 44 integral with the ram member 41 .
  • the stamping die (not shown) is contained within a two-partite housing 45 that contains the stamping die, properly speaking (not shown), to obtain a mechanical connection, preferably of the puzzle-lock type.
  • the stamping die consists of four parts, two lower matrix-like members and two upper punching members which are actuated by the ram member 41 in any conventional manner.
  • the trailing lower matrix-like member as viewed in the feed direction of the band, is thereby not supported directly on the fixed base member 42 but rather spring-supported by strong springs while the leading lower matrix-like member is supported directly on the fixed base member 42 and the leading upper punching die member is also spring-supported for reasons that will be explained hereinafter in connection with the stamping operation which requires a partial reconnection of successive blanks for the further feed of the stamped-out band material from the stamping station to the deformation station, properly speaking, and generally designated by reference numeral 50.
  • the bending or deformation station 50 has three axial positions in a direction transverse to the feed direction of the band from the stamping station 40 to the deformation station 50 .
  • the blank with a mechanical connection preferably of male and female puzzle-lock configurations at the leading and trailing end portions, respectively, is deformed about the core member 51 by means of lower vertically reciprocable slide members 52 and 53 , lateral slide members 60 and 61 adapted to reciprocate in a lateral slightly downwardly inclined direction, and by an upper vertically reciprocable slide member 70.
  • Each slide member 52, 53, 60, 61 and 70 is thereby composed of as many axially arranged sections rigidly interconnected with one another in a given slide member, as required by the number of axial positions in the deformation machine and the deforming surfaces thereof.
  • the lower slide member 52 is guided within guide members 54 while the lower slide member 53 is guided within guide members 55 , whereby guide members are provided on both sides of each slide member 52 and 53, but for convenience sake, only one is shown in some of the figures.
  • the slide members 52 and 53 are thereby reciprocated by connecting rods 56 and 57 ( Figure 1b) connected to cam followers which follow appropriate cam surfaces of cam members, all of which are mechanically driven synchronously in the machine.
  • slide members 60 and 61 are actuated by pivotal actuating members 64 and 65 whose lower ends are connected to the slide members 60 and 61 by connecting rods 64a and 65a and whose upper ends are provided with cam followers which follow the cam surfaces of mechanically driven cams 66 and 67 .
  • Each actuating member 64 and 65 is thereby pivotal about the pivot point 64b and 65b .
  • the upper slide member 70 is actuated in its reciprocating movement by an actuating member 72 which is operatively connected by means of a cam follower to a mechanically driven cam (not shown).
  • the mechanical connection of the compression rings may be of any known type, e.g., are of the puzzle-lock configuration, as described in my U.S. Patents 5,001,816 and 5,185,908.
  • the male portion generally designated by reference numeral 400 ( Figures 3B, 3C and 3D) of such a mechanical puzzle-lock-type connection includes a tongue portion 401 ( Figure 5) terminating in an enlarged head portion 402 and is provided with lateral lug portions 403 and 404.
  • the female portion of such a mechanical puzzle-lock-type connection generally designated by reference numeral 420 ( Figures 3B, 3C and 3D) is of complementary shape to the male portion 400.
  • the lateral abutment surfaces 437 and 438 in the area of the enlarged head portion 402 pass over into the transversely extending abutment end surface 439 by way of rounded-off abutment surfaces 440 and 441 which greatly improves the holding ability of the mechanical connection as more fully explained in the aforementioned copending application.
  • the areas 410 , 411 and 412 indicated in dash lines are subjected to a swaging action displacing material in the area of the joints of the transversely extending mutually engaging abutment surfaces 432 , 434 and 439 to improve the holding action of the mechanical connection of the compression ring during transportation and/or use thereof to fasten, for example, hoses, axle boots or the like on nipples, axle stubs, etc.
  • One cycle of such operation thereby involves the intermittent feeding of band material to the stamping station 40 and out of the stamping station to the deformation station, whereby the stamping-out of the mechanical connection with a preferable puzzle-lock configuration takes place while the intermittent feed is at standstill and includes the severing and partial reconnection of adjoining male and female parts of the mechanical puzzle-lock-type connection, and the cyclical movement of the slide members 50, 52, 53, 60, 62 and 70 as will be explained hereinafter in further detail.
  • each such slide member consists of a number of axially arranged, rigidly interconnected sections corresponding to the number of positions along the axial direction of the core member 51 with a corresponding number of different deforming surfaces.
  • parts of the core member and slide members corresponding to the first, second and third positions have been designated in Figures 7, 8, 9, 10, 11 and 12 by corresponding reference numerals of the 100, 200 and 300 series.
  • Band material 111 is continuously fed from the feed station 10 by decoiling the same from the reel 11, actuated by the drive mechanism 12 and the roller members 13 at a continuous speed controlled by the control unit 18 whereby the continuous speed in turn is determined by the position of the lever arm 19 riding with its follower member 19' on the band material 111 and connected to a potentiometer.
  • the electronic circuits of the control unit 18 are of conventional type, known to those skilled in the art and forming no part of this invention, a detailed description is dispensed with herein.
  • the band material 111 continuously decoiled from the reel 11 is fed to the straightener unit 14 in which any kinks, curls or bends are removed to assure that the band material fed to the continuous feed unit 16 is completely flat.
  • Feed rollers 17 and 17' of the feed unit 16 provide a continuous feed of the band material 111 .
  • the slack control unit 20 which senses the maximum slack 111'' by means of plate member 26 and the minimum slack 111' by means of follower member 25, feeds back information to the control unit 18 by way of lines 24a and 28a when the minimum or maximum slack of the band material exceeds predetermined limits.
  • This slack control is necessary to correlate the speed of the continuous feed unit 16 to the speed of the intermittent feed unit 30 in order that the length of band material fed per cycle is the same.
  • An oiling device generally designated by reference numeral 35 which should be located as close to the stamping unit 40 as possible, includes a reservoir tank 36 for feeding lubricating oil by way of line 37 and branch lines 38 and 39 to the top and bottom of the intermittently fed band material, in an amount as required by the stamping die.
  • the stamping unit 40 includes a reciprocating ram member 41 , reciprocating on upright post-like guide members 43 by means of its shorter members 44, as is conventional in connection with such stamping units.
  • the stamping unit 40 further includes a fixed base member 42 on which are supported the upright guide members 43 .
  • a two-partite housing 45 fixedly supported on base member 42 contains the stamping die, properly speaking (not shown), to realize the cuts for the mechanical connection, preferably of the puzzle-lock type. Each cut of a stamping operation of such a mechanical connection thereby provides a female puzzle-lock configuration in the trailing piece of band material and a male puzzle-lock configuration in the leading piece of band material.
  • the stamping die In order to be able to move blanks cut in the stamping station from the stamping station 40 to the bending or deformation station 50 by means of the intermittently operable feed unit 30, it is necessary to reconnect again two successive pieces of band material severed by the stamping operation during standstill in a given cycle of operation. For that reason, the stamping die consists of two lower matrix-like parts (not shown) and two upper punching die members (not shown) cooperating with a respective lower matrix member.
  • the lower trailing matrix-like member as viewed in the feed direction, is thereby spring-supported by a strong spring or springs while the leading upper punching die member of the leading pair is also spring-supported.
  • a spring-loaded plunger or pin member initially presses down in the deformation station on the next-following trailing blank during standstill of the intermittent feed, and complete reseparation is then realized by a plunger or pin member acting on the puzzle-lock male configuration of the next-following blank which is then held down separated by the spring-loaded plunger or pin member until the thus-separated leading blank now designated by reference numeral 111a has been moved transversely to the feed direction by finger-like members 80a, 80b, 80c as shown in Figures 2A and 3A.
  • Figures 1a, 1b, 2A, 2B, 2C and 2D are side elevational views, taken in the axial direction of core member 51
  • Figures 3A, 3B, 3C, 3D and 4A are schematic plan views, whereby the position of the various parts always correspond in Figures 2A, 3A and 4A, in Figures 2B and 3B, in Figures 2C and 3C and in Figures 2D and 3D.
  • the blank is thereby designated by reference numerals 111a, 111b and 111c in the first, second and third positions of the machine, while the ejected blank is designated by reference numeral 111d.
  • the feed path at the point of complete reseparation in the deforming machine includes a slight ramp so that the next-following blank is raised to the level of the preceding blank during the next feed cycle without being obstructed by hitting an abutment.
  • Steps 1, 2, 3 and 4 of Figure 14 are schematic side elevational views in Figure 14 while step 5 is a schematic plan view.
  • the transverse displacement of the blank illustrated at step 5 in Figure 14 is realized by three reciprocable finger members 80a, 80b and 80c which displace the separated blank into the first position on the core member 51.
  • the blank to form ultimately the compression ring is predeformed so that its end portions conform accurately to the circular configuration needed to permit closing of the puzzle-lock-type mechanical connection.
  • the first section 151 of the core member 51 is somewhat oval-shaped with an apple-like configuration.
  • the slide members 60 and 61 with their sections 160 and 161 then engage the substantially rectilinearly upwardly extending band portions with their band-engaging deforming surfaces 168 and 169 to deform the band through positions 1', 2', 3', 4' and 5' into position 6' where the section 170 of the upper slide member 70, upon downward movement, then engages the band with its band-engaging deforming surface 173 to deform the end portions containing the mechanical connection of puzzle lock configurations into position 6''.
  • the thus-predeformed blank Upon retraction of all slide members, the thus-predeformed blank will snap back into position 6''' as a result of the elasticity of the material and assisted by the L-shaped finger members 190a and 190b ( Figure 7) spring-supported by springs 192a and 192b in recesses 191a and 191b in the core section 151.
  • the shorter legs 194a and 194b of the finger-like members 190a and 190b thereby determine the maximum outward projection of these finger-like members. If so desired, the maximum projection of these finger-like members 190a and 190b may also be adjusted as will be described in connection with Figure 9.
  • Figure 2A thereby illustrates the position of the slide members in their retracted position during the beginning of a cycle.
  • the thus-predeformed blank is then displaced from its first position on the core member 51 by means of reciprocating finger-like members 81a, 81b, 81c and 81d into the second axial position on the core member 51 .
  • the blank 111b is deformed into its circular configuration and the mechanical connection of puzzle-lock configuration is closed.
  • Figure 8 thereby illustrates the position of the sections 252, 253, 260, 261 and 270 of the slide members 52, 53, 60, 61 and 70 in their extended position.
  • the inward movement of the slide member 60 into its extended position slightly precedes the movement of the slide member 61.
  • the finger member 290 initially projects out of its recess 291 in order that the female puzzle-lock end portion comes to lie above the male puzzle-lock end portion, whereby the finger member 290 is pushed inwardly against the force of the spring 292 as the section 261 of the slide member 62 reaches its inward extended position.
  • the upper slide member section 270 with its deformation insert 274 thereby closes the puzzle lock during its downward movement to complete the deformation and closing of the compression ring.
  • Figure 13 illustrates a device generally designated by reference numeral 500 for holding the blank in its predetermined position on the core member 51 so that the swaging action always takes place in the proper positions of a mechanical puzzle-lock-type connection.
  • the device 500 is thereby arranged in the space between lower slide members 52 and 53 and their guide parts, Figure 13 being a cross-sectional view taken in the axial direction.
  • Two pressure members 501 and 502 extending upwardly against the bottom surface of the blank ultimately forming the compression ring are spring-loaded by means of springs 503 and 504 which are accommodated within recesses of housing block 507 and surrounding plunger members 505 and 506 .
  • Guide members 508 and 509 thereby guide the pressure members 501 and 502 and parts associated therewith in the upward and downward movement.
  • An abutment member 510 is in engagement with the lower ends of the plunger members 505 and 506 to further increase the pressure exerted by the pressure members 501 and 502 on the bottom of the blank forming the compression ring over and above the force normally exerted by springs 503 and 504.
  • the abutment member 510 is thereby connected by connecting member 511 to any device causing upward and downward movement of the abutment member 510.
  • the connecting member 511 is connected with a piston rod of a pneumatic piston unit (not shown) which is so actuated that the connecting member 511 is moved upwardly into the position shown in Figure 13 during the deformation operations in a given cycle to very firmly hold the blank forming the compression ring in its predetermined position, during such deformation operations.
  • the abutment member 510 is moved downwardly so as to reduce the pressure exerted by the pressure members 501 and 502 and thereby allow axial displacement of the compression rings though without circumferential movement.
  • the springs 503 and 504 are so dimensioned that they hold the compression ring in proper position on the core member 51 yet permit axial movement of the compression rings as required for each operation.
  • the deformation surfaces of the slide members engaging with the compression ring blank are as follows.
  • Core section 151 has a length of 92 mm. and a height of 70 mm.
  • the surfaces 158 and 159 of sections 152 and 153 of the lower slide members 52 and 53 have a radius of curvature of 36.4 mm.
  • the surfaces 168 and 169 of sections 160 and 161 of slide members 60 and 61 have a radius of curvature of 36.4 mm.
  • the radius of curvature of the curved portion of surface 173 are each 36.4 mm. while the corresponding surfaces on core section 151 have a radius of curvature of 35 mm.
  • the diametric dimension of core section 251 of core member 51 is 79.4 mm.
  • the curvature 268 and 269 of sections 260 and 261 of slide members 60 and 61 have a radius of curvature of 41.1 mm.
  • the insert member 274 in section 270 of the upper slide member 70 has a surface 273 with a radius of curvature also of 41.1 mm.
  • the section 351 of core member 51 ( Figure 11) has a diametric dimension again of 79.4 mm. while the surfaces 358 and 359 of sections 352 and 353 of slide members 52 and 53 have again a radius of curvature of 41.1 mm.
  • the surfaces 368 and 369 of sections 360 and 361 of slide members 60 and 61 also have a radius of curvature of 41.1 mm.
  • the small tooth-like projections 376 on insert member 374 in section 370 of slide member 70 more fully shown in Figure 16, have a height of 0.35 mm. and subtending an angle of 60° as also shown in Figure 16. These tooth-like members 376 are thereby spaced a total of 10.6° in the cicumferential direction.
  • the small tooth-like projections 378 on insert member 377 are of similar configuration as the tooth-like projections 376, i.e., have a height of 0.35 mm. and subtending an angle of 60° spaced 10.6° in the circumferential direction.
  • the predeforming of the compression ring in position 1 to facilitate closing of the mechanical connection requires a different handling with compression rings of small diameter because in that case the tapering effects due to the small radius of curvature in the male and female parts of a puzzle-lock-type connection assume greater significance which make it difficult to close the connection due to the smaller openings along the inner circumferential surface of the band portion.
  • the machine of this invention is very efficient because by merely interchanging the sections of the various slide members, it is possible to manufacture with the same equipment compression rings of different diametric dimensions. Furthermore, the speed at which the machine can be operated is high, permitting the ready production of fifty-five compression rings per minute.
  • All slide members are mechanically actuated by mechanically driven cams while the slide members may be mounted by means of roller bearings to assure frictionless slide movement in their reciprocating movements during a cycle of operation.
  • the different sections of the slide members 52, 53, 60, 61 and of the core member 50 are also provided with such surfaces as to permit axial extension of the finger members 81a-81d and 82a-82d, for example, as shown by part-circular recesses and circular openings in the core section 150 of Figure 7 and the appropriately shaped end surfaces in slide member 52, 53 and 60, 61 . If the swaging action is not needed or not desired, the machine as described above may also use only two axial positions instead of three.
  • the slide members may also be actuated by other means other than mechanical cam operation. However, the coordination of the various movements of the slide members and their timing is best achieved by appropriate design of the cam members and synchronous operation thereof, for example, driven from a single electric motor by way of sprocket-and-chain drives.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Wire Processing (AREA)
  • Package Frames And Binding Bands (AREA)
  • Supports For Pipes And Cables (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (30)

  1. Procédé pour fabriquer automatiquement une bague de compression à partir d'une ébauche plate (111) de matériau en bande, dans lequel
       un élément formant noyau (51) est fourni dans un poste de déformation (50), l'élément formant noyau ayant plusieurs surfaces extérieures espacées axialement qui correspondent, en position et en nombre, à des positions successives dans la machine, et servant de surfaces de butée intérieures pour l'ébauche (111), et
       l'ébauche (111) est alimentée successivement à partir d'une première position dans la machine vers la suivante, et est déformée dans plusieurs cycles de fonctionnement autour de surfaces correspondantes parmi lesdites surfaces extérieures de l'élément formant noyau (51) en déplaçant des éléments formant coulisseau (52,
       53, 60, 61, 70) à partir d'une position rétractée jusque dans une position étendue pendant chaque cycle de fonctionnement, et ensuite en les ramenant dans leur position rétractée, en formant ainsi une bague fermée,
       caractérisé en ce que
       dans une première position de la machine, l'ébauche plate (111) est préformée en une forme annulaire,
       dans une seconde position, l'ébauche préformée est déformée dans sa forme annulaire finale, et des moyens de connexion mécanique (400, 420) prévus dans les zones d'extrémité libre de l'ébauche (111) sont fermés par un (70) desdits éléments formant coulisseau (52, 53, 60, 61, 70), et
       dans une troisième position, des zones prédéterminées (410, 411, 412) des moyens de connexion mécanique (400, 420) sont soumis à une action de martelage.
  2. Procédé selon la revendication 1, dans lequel la bague de compression (111d) située déjà dans ladite troisième position est éjectée par un déplacement de la bague de compression suivante (111c) de la deuxième à la troisième position.
  3. Procédé selon la revendication 1 ou 2, dans lequel l'action de martelage dans certaines zones de la liaison formée par les moyens de connexion fermés (400, 420) est effectuée dans la troisième position par un petit déplacement de matériau dans des zones de surfaces de butée s'étendant transversalement des moyens de connexion (400, 420).
  4. Procédé selon l'une quelconque des revendications précédentes, comportant de plus les étapes consistant à maintenir l'ébauche (111) dans une position prédéterminée par rapport à l'élément formant noyau (51) pendant tous les cycles de fonctionnement en appliquant une pression de maintien sur l'ébauche (111) dans la zone opposée auxdits moyens de connexion (400, 420).
  5. Procédé selon la revendication 4, dans lequel une pression de maintien inférieure est appliquée pendant des périodes de fonctionnement d'alimentation axiale de l'ébauche (111), et des pressions supérieures pendant des périodes de déformation par l'intermédiaire desdits éléments formant coulisseau (52, 53, 60, 61, 70).
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel, pendant un cycle donné, en premier au moins un élément formant coulisseau inférieur (52) est déplacé vers ledit élément formant noyau (51), un premier (60) parmi deux éléments formant coulisseau latéral (60, 61) est ensuite déplacé vers ledit élément formant noyau (51) après que ledit au moins un élément formant coulisseau inférieur (52, 53) ait sensiblement atteint sa position étendue, l'autre (61) parmi lesdits éléments formant coulisseau latéral (60, 61) est ensuite déplacé vers ledit élément formant noyau (51) avant que ledit premier élément formant coulisseau latéral (60) ait atteint sa position étendue, et au moins un élément formant coulisseau supérieur (70) est déplacé vers ledit élément formant noyau (51) après que les deux éléments formant coulisseau latéral (60, 61) aient atteint leur position étendue.
  7. Procédé selon la revendication 6, dans lequel ledit premier élément formant coulisseau latéral (60) a uniquement une courte avance par rapport à l'autre élément formant coulisseau latéral (61) lors de son déplacement vers sa position étendue.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel tous les éléments formant coulisseau (52, 53, 60, 61, 70) sont rétractés sensiblement simultanément, et dans lequel la totalité de l'alimentation de ladite ébauche (111) a lieu après un retrait suffisant des éléments formant coulisseau (52, 53, 60, 61, 70).
  9. Procédé selon l'une quelconque des revendications précédentes, comportant de plus les étapes consistant à estamper, dans un poste d'estampage (40), les moyens de connexion mécanique (400, 420) à partir d'un matériau de bande plate, et à alimenter par intermittence du matériau de bande plate vers le poste d'estampage (40) pour permettre un estampage des moyens de connexion (400, 420) pendant une interruption de l'alimentation intermittente.
  10. Procédé selon la revendication 9, comportant de plus l'étape consistant à déplacer par intermittence des ébauches successives (111) à partir dudit poste d'estampage (40) vers ledit poste de déformation (50), en reconnectant partiellement les moyens de connexion mécanique (400, 420) de pièces de bande successives rompus par l'action d'estampage.
  11. Procédé selon la revendication 10, comportant de plus l'étape consistant à déconnecter les moyens de connexion reconnectés partiellement (400, 420) lors de l'arrivée d'une ébauche (111) au niveau du poste de déformation (50) avant alimentation dans la première position.
  12. Procédé selon la revendication 10, comportant de plus les étapes consistant à alimenter de manière continue le matériau de bande plate vers le dispositif d'alimentation intermittente (30) à partir d'une alimentation (11) de matériau de bande, et à mettre en corrélation la vitesse d'alimentation de l'alimentation continue par rapport à celle de l'alimentation intermittente, de sorte que la longueur de matériau de bande alimentée par les alimentations intermittentes et continues pendant un cycle de fonctionnement sont sensiblement identiques.
  13. Machine pour fabriquer automatiquement des bagues de compression à partir d'ébauches plates (111), comportant, dans un poste de déformation (50),
       un élément formant noyau (51) ayant plusieurs surfaces extérieures qui correspondent à plusieurs positions successives dans une direction axiale sensiblement transversale à la direction longitudinale d'une ébauche (111),
       une pluralité d'éléments formant coulisseau. (52, 53, 60, 61, 70) pour déformer l'ébauche (111),
       des moyens d'actionnement (56, 57, 66, 67, 72) pour actionner lesdits éléments formant coulisseau (52, 53, 60, 61, 70) selon une séquence prédéterminée pendant un cycle de fonctionnement, et
       des moyens d'alimentation (80, 81, 82) pour alimenter successivement une ébauche (111) dans ladite direction axiale à partir d'une première position sur ledit élément formant noyau (51) vers la position suivante, en déformant ainsi successivement l'ébauche (111) jusque dans sa forme finale,
       caractérisée en ce que
       chaque élément formant coulisseau (52, 53, 60, 61, 70) a plusieurs surfaces d'extrémité de mise en prise de bande (58, 59, 68, 69, 73) au niveau de ses extrémités libres qui correspondent aux positions sur ledit élément formant noyau (51), incluant
       des premières surfaces d'extrémité qui correspondent à une première position sur ledit élément formant noyau (51) pour une pré-déformation de l'ébauche (111),
       des deuxièmes surfaces d'extrémité qui correspondent à une deuxième position sur ledit élément formant noyau (51) pour déformer l'ébauche (111) en une forme annulaire sensiblement finale après que des moyens de connexion mécanique complémentaires (400, 420) réalisés aux extrémités libres de l'ébauche (111) aient été fermés, et
       des troisièmes surfaces d'extrémité qui correspondent à une troisième position sur ledit élément formant noyau (51) pour soumettre des zones prédéterminées desdits moyens de connexion (400, 420) à une action de martelage.
  14. Machine selon la revendication 13, dans laquelle des positions successives des surfaces extérieures dudit élément formant noyau (51) ont une longueur axiale qui correspond sensiblement à la largeur de l'ébauche (111).
  15. Machine selon la revendication 13 ou 14, dans laquelle lesdits éléments formant coulisseau (52, 53, 60, 61, 70) peuvent fonctionner pour déformer l'ébauche (111) à partir du dessous, à partir des côtés et à partir du dessus.
  16. Machine selon l'une quelconque des revendications 13 à 15, dans laquelle les surfaces extérieures de l'élément formant noyau (51) dans ladite première position ont une forme pour pré-déformer les extrémités libres d'une ébauche (111) afin de se conformer à la forme nécessaire pour permettre de fermer les moyens de connexion mécanique (400, 420) dans la deuxième position.
  17. Machine selon la revendication 16, dans laquelle les surfaces extérieures de l'élément formant noyau (51) dans ladite première position sont légèrement ovales dans une mesure telle à éviter un chevauchement des extrémités libres de l'ébauche (111).
  18. Machine selon l'une quelconque des revendications 13 à 17, dans laquelle les surfaces extérieures de l'élément formant noyau (51) dans ladite première position comportent des saillies analogues à un doigt (190a, 190b) pour aider à mettre en oeuvre la forme ovale pré-déformée.
  19. Machine selon l'une quelconque des revendications 13 à 18, dans laquelle les surfaces extérieures de l'élément formant noyau (251) dans ladite deuxième position sont généralement circulaires, et comportent une saillie analogue à un doigt (291) pour provoquer un chevauchement initial des extrémités libres de l'ébauche (111) contenant les moyens de connexion mécanique (400, 420) pendant une déformation initiale dans ladite deuxième position, jusqu'à ce que les moyens de connexion mécanique (400, 420) soient fermés par une déformation supplémentaire dans ladite deuxième position par un déplacement vers le bas d'un premier (270) desdits éléments formant coulisseau (252, 253, 260, 261, 270) à partir du dessus.
  20. Machine selon l'une quelconque des revendications 13 à 19, dans laquelle deux éléments formant coulisseau (52, 53) sont fournis, pouvant être actionnés vers l'élément formant noyau (51) dans une direction généralement vers le haut, deux éléments formant coulisseau supplémentaires (60, 61) sont fournis, qui se déplacent vers l'élément formant noyau (51) à partir de côtés sensiblement opposés de celui-ci, et un élément formant coulisseau (70) est fourni, pouvant être actionné vers l'élément formant noyau (51) dans une direction généralement vers le bas.
  21. Machine selon l'une quelconque des revendications 13 à 20, comportant de plus des moyens de support (503, 504, 510, 511) venant en prise avec l'ébauche (111) à partir du dessous pour maintenir l'ébauche (111) dans la même position sur l'élément formant noyau (51) lorsque l'ébauche (111) est déplacée à travers plusieurs positions et est déformée dans celles-ci.
  22. Machine selon l'un quelconque des revendications 13 à 21, comportant de plus un poste d'alimentation de matériau de bande (10, 11), un poste d'estampage (40) pour estamper les moyens de connexion mécanique complémentaires (400, 420) et pour former des ébauches (111), des moyens d'alimentation continue (16) pour alimenter de manière continue un matériau de bande ininterrompue à partir dudit poste d'alimentation sur un point le long du trajet vers ledit poste d'estampage (40), et des moyens d'alimentation pouvant fonctionner par intermittence (30) pour alimenter des ébauches (111) à partir dudit point vers ledit poste d'estampage (40).
  23. Machine selon la revendication 22, comportant de plus des moyens de commande (18, 18a, 24a, 28a) pour mettre en corrélation la vitesse desdits moyens d'alimentation continue (16) avec la vitesse desdits moyens d'alimentation pouvant fonctionner par intermittence (30), une bobine (11) de matériau de bande étant adaptée pour être entraínée de manière positive dans le poste d'alimentation pour dérouler le matériau de bande à partir de la bobine, et la vitesse de la bobine entraínée pouvant être actionnée pour être ajustée par lesdits moyens de commande (18).
  24. Machine selon l'une quelconque des revendications 13 à 23, dans laquelle ledit poste d'estampage (40) comporte une matrice d'estampage (45) ayant une matrice et un poinçon de matrice d'estampage (41) pour chaque partie d'extrémité de deux ébauches adjacentes (111), afin d'estamper les moyens de connexion mécanique complémentaires (400, 420) d'une manière telle que les deux ébauches adjacentes (111) sont séparées initialement complètement et libérées l'une de l'autre, et après la fin d'une découpe, sont ensuite partiellement reconnectées pour permettre une alimentation des ébauches (111) à partir du poste d'estampage (40) vers le poste de déformation par l'intermédiaire desdits moyens d'alimentation pouvant fonctionner par intermittence, de sorte que les ébauches reconnectées partiellement (111) sont à nouveau déconnectées par des moyens de déconnexion avant un déplacement transversal à partir de ladite première position vers ladite deuxième position sur ledit élément formant noyau (51).
  25. Machine selon la revendication 24, dans laquelle ladite libération complète initiale et la reconnexion partielle suivante sont réalisées par l'intermédiaire de moyens de support formant ressort du poinçon pour la partie avant des moyens de connexion à fermeture à liaison de forme complémentaires (400, 420), et par l'intermédiaire de moyens de support formant ressort de la matrice pour la partie arrière des moyens de connexion à fermeture à liaison de forme complémentaires (400, 420).
  26. Machine selon l'une quelconque des revendications 13 à 25, comportant des moyens pour éjecter la bague de compression finie à partir de la troisième position.
  27. Machine selon l'une quelconque des revendications 13 à 26, dans laquelle les moyens d'alimentation comportent des éléments analogues à une tige (80, 81, 82) pouvant être actionnés dans la direction axiale pour mise en prise avec l'ébauche (111).
  28. Machine selon l'une quelconque des revendications 13 à 27, dans laquelle les moyens d'alimentation sont actionnés lors d'un retrait important des éléments formant coulisseau (52, 53, 60, 61, 70) au moins presque à la fin d'un cycle de fonctionnement impliquant des déplacements en va et vient des éléments formant coulisseau (52, 53, 60, 61, 70), et dans laquelle, pendant un fonctionnement normal, une ébauche (111) est présente dans chacune des différentes positions, et chaque élément formant coulisseau vient en prise, à l'aide de chacune de ses surfaces de mise en prise, avec une ébauche respective parmi les ébauches (111).
  29. Machine selon l'une quelconque des revendications 13 à 27, dans laquelle les surfaces d'extrémité qui correspondent à la troisième position sur un desdits éléments formant coulisseau (352, 353, 360, 361, 370) et les surfaces extérieures qui correspondent à la troisième position sur ledit élément formant noyau (377) sont munies de dents de déplacement de matériau (376, 378) pour effectuer, dans la troisième position, l'action de martelage dans certaines zones de la liaison formée par les moyens de connexion mécanique fermés (400, 420).
  30. Machine selon l'une quelconque des revendications 13 à 29, dans laquelle chaque élément formant coulisseau (352, 353, 360, 361, 370) est constitué de plusieurs tronçons agencés axialement, munis chacun de ses surfaces d'extrémité, et connectés de manière fixe les uns aux autres pour se déplacer à l'unisson pendant chaque cycle de fonctionnement, et dans laquelle ledit élément formant noyau (377) est constitué de plusieurs tronçons agencés axialement, munis chacun de ses propres surfaces extérieures, et connectés de manière fixe les uns aux autres.
EP97107392A 1996-05-21 1997-05-05 Dispositif pour la fabrication automatique de bagues de compression avec une fermeture à liaison de forme Expired - Lifetime EP0808677B1 (fr)

Applications Claiming Priority (2)

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US1802596P 1996-05-21 1996-05-21
US18025 1996-05-21

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EP0808677B1 true EP0808677B1 (fr) 2003-08-06

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EP (1) EP0808677B1 (fr)
JP (1) JP4068180B2 (fr)
KR (1) KR100501111B1 (fr)
CN (1) CN1240501C (fr)
AR (1) AR007168A1 (fr)
BR (1) BR9703221A (fr)
CA (1) CA2204063C (fr)
DE (1) DE69723915T2 (fr)
ES (1) ES2203733T3 (fr)
ZA (1) ZA973958B (fr)

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CN106239157A (zh) * 2016-08-18 2016-12-21 安徽省宁国市东波紧固件有限公司 一种挡圈加工成型设备
CN107175283A (zh) * 2017-06-21 2017-09-19 杭州吉达汽车配件有限公司 一种大型双精冲机联动生产线及其工作方法

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CN103128207B (zh) * 2013-03-11 2015-09-02 吴成涛 弹性挡圈的加工工艺及加工成形装置
CN104858325B (zh) * 2015-06-06 2016-10-26 欧阳庆丰 一种弹性挂钩的扳机夹持输送装置
CN108273882B (zh) * 2017-11-28 2019-07-05 苏州和瑞科自动化科技有限公司 一种卷圆机构
FR3091203A3 (fr) * 2018-12-27 2020-07-03 Michelin & Cie Installation de fabrication de tringles pour pneumatiques comprenant un poste de sertissage pourvu d’un sous-ensemble de preparation automatique de manchons de sertissage
CN110227743B (zh) * 2019-07-16 2024-06-18 西南石油大学 一种中梁液压矫正机顶头结构
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CN113714340B (zh) * 2020-05-25 2023-07-04 成都秦川物联网科技股份有限公司 一种物联网智能燃气表整体封圈制备用料带轨道
CN112692186B (zh) * 2020-12-14 2024-08-16 广东新宝精密制造股份有限公司 一种冲压卷圆装置
EP4414181A1 (fr) 2023-02-09 2024-08-14 Meco SA Outil de frappe formant une étampe, et procédé d'étampage associé
CN116213585B (zh) * 2023-05-05 2023-07-04 江苏巨弘捆带制造有限公司 一种钢带冷轧打包扣自动成型设备

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US1924230A (en) * 1932-01-14 1933-08-29 Moraine Products Company Method of making bushings from strip metal
GB551367A (en) * 1942-02-13 1943-02-18 Cleveland Graphite Bronze Co Method of making bushings
US3675460A (en) * 1970-06-08 1972-07-11 Torin Corp Four-slide machine with improved mandrel for producing bearings and the like
US4543297A (en) * 1981-11-04 1985-09-24 Saurenman Phillip E Stiff metal ring and process for making it

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CN105382115B (zh) * 2015-10-14 2017-04-12 中国矿业大学 一种油漆刷铁壳复合机
CN106239157A (zh) * 2016-08-18 2016-12-21 安徽省宁国市东波紧固件有限公司 一种挡圈加工成型设备
CN107175283A (zh) * 2017-06-21 2017-09-19 杭州吉达汽车配件有限公司 一种大型双精冲机联动生产线及其工作方法
CN107175283B (zh) * 2017-06-21 2019-03-01 杭州吉达汽车配件有限公司 一种大型双精冲机联动生产线及其工作方法

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ES2203733T3 (es) 2004-04-16
CN1240501C (zh) 2006-02-08
AU715588B2 (en) 2000-02-03
KR100501111B1 (ko) 2005-10-21
JP4068180B2 (ja) 2008-03-26
CN1169894A (zh) 1998-01-14
AU2352897A (en) 1997-11-27
JPH1047545A (ja) 1998-02-20
MX9703641A (es) 1998-06-30
DE69723915D1 (de) 2003-09-11
CA2204063C (fr) 2005-12-20
DE69723915T2 (de) 2004-04-22
KR970073787A (ko) 1997-12-10
ZA973958B (en) 1997-12-02
BR9703221A (pt) 1998-09-01
CA2204063A1 (fr) 1997-11-21
EP0808677A1 (fr) 1997-11-26
AR007168A1 (es) 1999-10-13

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