EP2242387B1 - Method and device for assembling shoulder straps having a figure-of-eight ring - Google Patents
Method and device for assembling shoulder straps having a figure-of-eight ring Download PDFInfo
- Publication number
- EP2242387B1 EP2242387B1 EP09710832.8A EP09710832A EP2242387B1 EP 2242387 B1 EP2242387 B1 EP 2242387B1 EP 09710832 A EP09710832 A EP 09710832A EP 2242387 B1 EP2242387 B1 EP 2242387B1
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- European Patent Office
- Prior art keywords
- ring
- band
- upstream
- downstream
- ribbon
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 42
- 238000011144 upstream manufacturing Methods 0.000 claims description 83
- 238000012546 transfer Methods 0.000 claims description 50
- 238000005520 cutting process Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 14
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 39
- 230000037431 insertion Effects 0.000 description 39
- YFXPPSKYMBTNAV-UHFFFAOYSA-N bensultap Chemical compound C=1C=CC=CC=1S(=O)(=O)SCC(N(C)C)CSS(=O)(=O)C1=CC=CC=C1 YFXPPSKYMBTNAV-UHFFFAOYSA-N 0.000 description 33
- 230000007547 defect Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
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- 230000000903 blocking effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41H37/00—Machines, appliances or methods for setting fastener-elements on garments
- A41H37/08—Setting buckles
Definitions
- the present invention relates to methods and devices for assembling loops and ribbons to form an adjustable garment strap such as a women's underwear strap, such as a bra strap.
- the bras straps generally comprise a main segment of sling whose length is adjustable, and a secondary segment of sling whose length is fixed, the two segments being connected to each other by a loop.
- the main segment of the shoulder strap comprises, for the adjustment of its length, a rule with two transverse slots separated by a cross member.
- a ribbon passes a first time in the ruler crossing both of the two slots and passing around the central cross separating them, then goes into the loop and returns to the ruler to pass again, in the same direction, around the central cross of the rule and to form a loop secured to itself around the central crossbar.
- the difficulty comes from the fact that it is necessary to pass several times the ribbon in the slots of the ruler to achieve this main segment of ramp adjustable length. Ribbon passes are long and tedious operations.
- documents FR 2 515 009 A and FR 2 631 788 A disclose methods and devices for automatically threading the tape into a ruler, employing at least three separate introductory fingers successively, a plurality of tape clamping fingers, and a device for holding and rotating 180 ° the rule.
- the devices are relatively complex, requiring several fingers of introduction, which increases their production cost, the difficulty of adjustments, and the risk of malfunctions.
- the problem proposed by the present invention is to design a method and a device for mounting the main segment of a shoulder strap which avoids the mounting defects encountered with the known devices, namely ribbon misalignment in the loop. fastening around the central beam of the rule, and the variations in length of the fastening loop around the central beam of the rule.
- the invention provides a method and a device which assures the mounting of the main strapless segment with the aid of only one threading finger, constituting a simpler, more reliable and less expensive device.
- Another object of the invention is to design a mounting device which is much simpler to adjust for adaptation to shoulder straps of different sizes, allowing use by a less experienced staff.
- the present method avoids the mounting defects mentioned above, and can be implemented on a simpler device than the known devices mentioned above.
- the present method provides for a step of simultaneously introducing the ribbon into the ruler and in the ring, and can be implemented on a device having only one input finger.
- the transfer clamp holds the tape upstream of the rule and, during step b), the downstream end portion of the ribbon is guided by guiding means. downstream of the transfer clamp and pushed downstream by the transfer clamp.
- the transfer clamp blocks the upstream section of tape near the rule, and centering means guide the free end of the tape to engage against the upstream section of ribbon.
- the taking of the ribbon by the transfer clamp can be constant and perfectly controlled, to avoid further defects resulting from a variation in the length of the ribbon loops.
- the free end of the ribbon can be secured to the upstream ribbon web by ultrasonic welding between a sonotrode and an anvil welding.
- the tape can be ultrasonically cut between a sonotrode and a cross-cutting cutting anvil.
- Such a device makes it possible to achieve the desired purpose, in particular by the fact that the support means thus formed ensure good lateral guidance of the tape during the various steps of the method.
- the particular structure of the first support means enables them to ensure good guidance of the free ribbon section during the ribbon insertion steps in the rule, and this guidance is particularly effective during the step preceding the fastening the ribbon on itself, the anvil then participating itself in this guidance.
- the transfer clamp ensures a constant grip of the tape during the process steps, ensuring good control of the length of the tape loops during the process.
- this particular structure ribbon handling means with a clamp which remains upstream of the rule and which therefore pushes the downstream section of ribbon instead of pulling it, and with a telescopic guide, ensure a smooth handling that avoids apply to the downstream section of ribbon transient mechanical tensile stresses. Such tensile stresses, which occur in known devices, would induce random remanent deformations of the ribbon and uncertainty in the length and centering of the ribbon strips. These defects are thus avoided.
- the second support means for holding a ring comprise moving and holding means able to hold the second support means and the ring in a fixed engagement position facing the first support means for the engagement. simultaneous ribbon in the ring and in the rule by the introduction finger.
- the device is both simpler and more effective than known devices.
- the synchronized displacement operations of the ring and the ribbon are avoided, operations which, in the known devices, induce a cooperation between the ring and the ribbon and require a perfect coordination of the movements, while undergoing the hazards. due to the often irregular shape of the ribbons.
- the invention thus makes it possible to guarantee a good result with rings and ribbons of any shape.
- the Figures 1 and 2 represent a bra strap that can be assembled by a device and according to a method of the present invention.
- This ramp comprises a main segment of ramp 1 and a segment 2.
- the secondary segment of strap 2 has a fixed length, and is formed of a length of tape 3 closed in a fastening loop 4 on a connecting ring 5.
- the main segment of ramp 1 has a variable length its length can be modified by sliding a ruler 6 along a section of ribbon 7.
- the rule 6, as illustrated in the figures, is a double ring 8 flattened, defining a first slot 8 and a second slot 9, both oriented transversely, and separated from each other by a central cross member 10.
- a first end 11 of the tape 7 is looped integrally on itself around the central web 10, then the tape 7 is formed according to a control loop 12 passing in the connecting ring 5.
- the ribbon 7 then passes into the second slot 9 and into the first slot 8 to exit in an upstream section 13.
- a transfer clamp 20, an insertion finger 21, a sonotrode 22, a welding anvil 23, a retractable anvil support 24, a cutting anvil 25, a stretching finger 26, means of rotation are thus distinguished.
- guide comprising a telescopic guide 27 associated with the transfer clamp 20, and a clamping shoe 28.
- first support means 29 capable of holding the rule 6 in appropriate positions for the various steps of the method.
- a direction of longitudinal progression is defined, illustrated by the arrow 30, or direction in which the ribbon 7 is unwound from a reserve ribbon not illustrated on these Figures 3 to 34 .
- the ribbon 7 is brought in a substantially horizontal plane, the insertion finger 21 and the sonotrode 22 being disposed above the general progression plane of the ribbon 7, while the anvil 23, the cutting anvil 25, the retractable anvil support 24 and the first support means 29 are arranged below the general plane of progression of the ribbon 7.
- the first support means 29 comprise a first cross member 29a and a second cross member 29b, generally perpendicular to the direction of progression 30, and between which the rule 6 engages and is held.
- the first crosspiece 29a has an upper face which constitutes the welding anvil 23, adapted to cooperate with the sonotrode 22.
- the first support means 29 are fixed in longitudinal position in the direction of progression 30, but are pivotally mounted about a transverse axis collinear with the crossbar 10. It will be considered that the first support means 29 can pivot around the cross member 10, according to an amplitude of 360 °.
- the insertion finger 21, the clamping shoe 28 and the sonotrode 22 are mounted on a common support 31, schematically illustrated in dashed lines, which is itself displaceable in the direction of progression between three positions: in a first position, illustrated on the figure 3 , the insertion finger 21 is facing the downstream slot of the rule 6 (the first slot 8 in the case of the figure 3 ); in a second position, illustrated on the figure 12 , the sonotrode 22 is facing the upstream cross member of the first support means 29 (the first crossbar 29a anvil 23 on the figure 12 ), the insertion finger 21 being offset downstream in the direction of progression 30; in a third position, illustrated on the figure 17 , the insertion finger 21 is facing the upstream slot of the rule 6 (the second slot 9 in the case of the figure 17 ).
- the transfer clip 20 can take two states, namely a relaxed state illustrated on the figure 3 , in which it releases the ribbon 7 for its progression in the direction of progression 30, and a tight state illustrated on the figure 4 in which it is in rubbing contact with the ribbon 7.
- the transfer tong 20 is movable longitudinally along the advancing direction 30, between a retracted position illustrated in FIG. figure 3 in which it is upstream and away from the first support means 29, and a close position illustrated on the figure 4 in which it is moved to the vicinity of the first support means 29 while remaining upstream of said first support means 29.
- the telescopic guide 27 is associated with the transfer clip 20, that is to say that it moves in longitudinal movement with the transfer clip 20 during its movements between the retracted position ( figure 3 ) and the close position ( figure 4 ).
- the telescopic guide 27 can be selectively deployed and retracted longitudinally vis-Ã -vis the transfer clamp 20, which can take an extended position illustrated on the figures 3 and 4 for example, then an intermediate position illustrated on the figures 5 and 6 for example, and finally a retracted position illustrated on the figures 11 and 12 for example.
- the telescopic guide 27 When the transfer clamp 20 is in the retracted position, the telescopic guide 27 is in all cases upstream of the first support means 29.
- the telescopic guide 27 When the transfer clamp 20 is in the close position, the telescopic guide 27 has its downstream end 27a located with regard to the downstream cross member of the first support means 29 (the cross member 29b on the figure 4 for example), its downstream end 27a facing the upstream cross member of the first support means 29 (the cross member 29a on the figure 5 for example) when in the intermediate position, and its downstream end 27a is still upstream of the first support means 29 when in the retracted position as illustrated on the figure 11 .
- the retractable anvil support 24 is for example a pivotally mounted piece about a transverse lower axis 24a, between a retracted position illustrated on the figure 3 in which it is away from the upstream cross member 29a, and a support position as illustrated on the figure 14 in which it bears against the underside of the upstream cross member 29a.
- the clamping shoe 28, mounted on the common support 31, is movable vertically between a retracted position, illustrated in FIG. figure 3 , in which it is away from the first support means 29, and a clamping position, illustrated for example on the figures 23 and 24 , in which he is close to the first support means 29 bearing on the upper face of the ring 5 to tighten the ribbon 7 against the ring 5.
- the telescopic guide 27 is designed as a gutter to support a ribbon end portion and to guide it laterally from the transfer clip 20 to its downstream end 27a, while being able to slide along the ribbon 7 in the direction of the ribbon. progression 30.
- the transfer clamp 20 is released and in the retracted position, the telescopic guide 27 is deployed, the sonotrode 22, the insertion finger 21 and the clamping shoe 28 are retracted, the common support 31 is in the first position, the anvil support 24 is retracted, the cutting anvil 25 is retracted, and the first support means 29 hold a ruler 6 in a horizontal position, with the first crossbar 29a upstream of the ruler 6, and with the second crossbar 29b downstream of the rule 6.
- the ribbon 7 extends to the downstream end 27a of the telescopic guide 27, its free end 7a may protrude slightly downstream. The first step a) of the method is thus carried out.
- step b) is carried out to transfer the ribbon.
- the transfer clamp 20 is lowered to the tightened state to engage the ribbon 7, then the transfer clamp 20, the telescopic guide 27 and the ribbon 7 are moved downstream until the transfer clamp 20 reaches its close position.
- the downstream end portion 7b of the ribbon 7 is thus guided by the telescopic guide 27 forming guide means, downstream of the transfer clip 20, and is pushed downstream by the transfer clip 20
- the free end 7a of the ribbon 7, held in the downstream end 27a of the telescopic guide 27, is then located at the right of the second crossmember 29b of the first support means 29, the ribbon 7 having a section d the downstream end 7b deployed above and parallel to the assembly formed by the first support means 29 and the rule 6.
- the telescopic guide 27 is retracted to the intermediate position, its downstream end 27a being at the right of the first cross member 29a of the first support means 29, the transfer clamp 20 always being in a tight state to oppose the simultaneous withdrawal ribbon 7 with the telescopic guide 27.
- the tape 7 is thus held by the telescopic guide 27 near the rule 6 for the next operation, and the downstream end portion 7b of the ribbon 7 remains on the first support means 29 and rule 6.
- step c) of first penetration by the insertion finger 21 is illustrated: the insertion finger 21 is lowered until it passes through the first slot 8 of the rule 6, driving with it the downstream end portion 7b of the ribbon 7 which then hangs down.
- step d) of the method during which the insertion finger 21 is retracted into its retracted position, and the ruler 6 is rotated by 180 degrees in a first direction of rotation 32 around its central cross member 10, so as to go up while moving downstream the downstream end portion 7b of the ribbon 7.
- the downstream end portion 7b of the ribbon 7 is then found above the crossbar 29a, which she -Even is downstream of the rule 6, while the crossbar 29b is found upstream of the rule 6.
- the second transverse slot 9 of the rule 6 is in front of the insertion finger 21.
- the transfer clamp 20 is always lowered on the ribbon 7 to block it.
- step e) of the method in which the downstream end portion 7b is introduced into the second slot 9 of the rule 6, is illustrated by means of the insertion finger 21 which is lowered and which traverses the second slot 9.
- the transfer clip 20 always blocks the strip 7 upstream of the rule 6.
- step f) of the method during which the insertion finger 21 is withdrawn to its retracted position, the rule 6 is returned by pivoting the first support means 29 in the second direction 33 of rotation around the central cross member 10, and at the same time the common support 31 is moved downstream to bring the sonotrode 22 facing the welding anvil 23 which is again upstream of the rule 6.
- the transfer clip 20 the free end 7a of the ribbon 7 is engaged between the upstream ply 7d and the welding anvil 23.
- the first support means 29 provide a function of means for centering the free end 7a of the ribbon 7 7, guiding it perfectly to engage it against the upstream segment 7d of ribbon without risk of lateral overshoot and formation of a lateral protrusion 11a ( figure 2 ).
- the tilting anvil support 24 is tilted to bear under the upstream beam 29a comprising the welding anvil 23.
- step g the sonotrode 22 is lowered by activating it, and the transfer clip 20 and the telescopic guide 27 associated with it are moved upstream, away from the rule 6.
- the sonotrode 22 then ensures the welding of the downstream end section portion 7b of the ribbon 7 adjacent to the free end 7a on the upstream ply 7d which is juxtaposed between the sonotrode 22 and the welding anvil 23.
- step h in which the sonotrode 22 is withdrawn to its retracted position, and the transverse stretching finger 26 is moved downstream beyond the first support means 29, the stretching finger 26 being engaged on an intermediate portion 7c of the ribbon 7 and engaged between the rule 6 and the upstream ply 7d of the ribbon 7.
- the transfer clip 20 remains loose, allowing the unwinding of a necessary length of the tape 7 to make the adjustment loop 12 by following the displacement of the transverse stretching finger 26. It is understood that the displacement of the transverse stretching finger 26 determines the length of the adjustment loop 12.
- the figure 17 illustrates a next step during which the common support 31 is moved upstream to the third position in which the insertion finger 21 is facing the second slot 9 of the rule 6.
- the transfer clamp 20 is tightened to lock the ribbon 7 upstream of the first support means 29.
- step i) of the method is carried out by moving the ring 5 to bring it above the rule 6 between the rule 6 and the upstream upper ply 7d of the ribbon 7.
- the clamping shoe 28 is lowered to clamp a section of the upper web 7d of ribbon 7 between the clamping shoe 28 and the ring 5, and the sonotrode 22 is lowered, while keeping the transfer clamp 20 in a longitudinal position fixed along the direction of progression 30.
- step j) is illustrated, during which, while holding the transfer clamp 20 tight, the upper web 7d of ribbon 7 is cut by feeding the sonotrode 22 and applying the cutting anvil 25. , realizing an upstream end portion 7e ribbon.
- step k) of the method is carried out by lowering the insertion finger 21 so that it simultaneously passes through the ring 5 and the second slot 9 of the rule 6, simultaneously driving the upstream end portion 7e of the ribbon 7 which then passes through the ring 5 and the rule 6.
- the insertion finger 21 is removed, and on the figure 27 the insertion finger 21 and the clamping shoe 28 are moved towards their retracted position away from the ring 5, and the retractable anvil support 24 is tilted towards its support position, which anvil support 24 then pushes upstream the upstream end portion 7e of the ribbon 7 and keeps it tight under the crossbar 29a.
- step m) of the method is carried out, during which the first support means 29 are pivoted by 180 degrees around the cross member 10, in the second direction of rotation 33 illustrated by the arrows.
- the first support means 29 guide the upstream end portion 7e ribbon, which straddles above the crossbar 29b which itself is upstream of the rule 6.
- the first slot 8 of the rule 6 is then found facing the insertion finger 21, which is still in its third longitudinal position.
- step n) of the method is carried out by lowering the insertion finger 21 which then passes through the first slot 8 of the rule 6 and carries with it the upstream end section 7e of the ribbon. Simultaneously, the stretching finger 26 can be brought upstream to an intermediate position to relax the adjustment loop 12.
- the clamping shoe 28 is retracted.
- the main strap segment 1 is then entirely constituted and can be removed from the device.
- the figure 35 illustrates the essential means of a device for implementing the method illustrated above in connection with the Figures 3 to 34 .
- a frame 100 which may comprise a ribbon supply, a reserve of loops, a reserve of rules, and means for holding and placing the various active elements of the device.
- the transfer clamp 20 is tightened or loosened by a jack 20a.
- the telescopic guide 27 is moved longitudinally, relative to the transfer clamp 20, by the actuation of a longitudinal cylinder 27b.
- the assembly constituted by the transfer clamp 20 and the telescopic guide 27 is moved longitudinally with respect to the frame 100 by the actuation of a longitudinal jack 34.
- the first support means 29 are urged in rotation by rotation means such that a motor 29c carried by the frame 100.
- the common support 31 is moved longitudinally by a jack 31a. On the common support 31, the assembly formed by the sonotrode 22, the clamping shoe 28 and the insertion finger 21 is moved vertically by a jack 22a.
- the insertion finger 21 is moved vertically by a jack 21a.
- the cutting anvil 25 is moved vertically by a jack 25a.
- the retractable anvil support 24 is pivoted by the actuation of a jack 24b.
- the ring 5 is held by a ring support 35 displaceable by displacement and holding means 135 able to move the ring support 35 and the ring 5 between an upstream retracted position ( Figures 1 to 18 ), an upstream upward position ( figure 19 ), a commitment position ( Figures 20 to 27 ) facing the first support means 29, and a downstream position ( Figures 28 to 34 ).
- the displacement and holding means 135 are able to hold the ring support 35 and the ring 5 in the fixed position of engagement with the first support means 29 to allow simultaneous engagement of the strip 7 in the ring 5 and in rule 6 ( figure 25 ) by the single finger of introduction 21.
- the stretching finger 26 is displaced by drive means 26a in longitudinal translation in the direction of progression 30.
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- Textile Engineering (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Description
La présente invention concerne les procédés et dispositifs permettant d'assembler des boucles et des rubans pour former une bretelle réglable de vêtement telle qu'une bretelle de sous-vêtements féminins, par exemple une bretelle de soutien-gorge.The present invention relates to methods and devices for assembling loops and ribbons to form an adjustable garment strap such as a women's underwear strap, such as a bra strap.
Les bretelles de soutiens-gorge comprennent généralement un segment principal de bretelle dont la longueur est réglable, et un segment secondaire de bretelle dont la longueur est fixe, les deux segments étant reliés l'un à l'autre par une boucle. Le segment principal de bretelle comprend, pour le réglage de sa longueur, un réglet à deux fentes transversales séparées par une traverse. Un ruban passe une première fois dans le réglet en traversant l'une et l'autre des deux fentes et en passant autour de la traverse centrale les séparant, puis passe dans la boucle et revient dans le réglet pour passer à nouveau, dans le même sens, autour de la traverse centrale du réglet et pour former une boucle solidarisée à elle-même autour de la traverse centrale.The bras straps generally comprise a main segment of sling whose length is adjustable, and a secondary segment of sling whose length is fixed, the two segments being connected to each other by a loop. The main segment of the shoulder strap comprises, for the adjustment of its length, a rule with two transverse slots separated by a cross member. A ribbon passes a first time in the ruler crossing both of the two slots and passing around the central cross separating them, then goes into the loop and returns to the ruler to pass again, in the same direction, around the central cross of the rule and to form a loop secured to itself around the central crossbar.
La difficulté vient du fait qu'il faut passer plusieurs fois le ruban dans les fentes du réglet pour réaliser ce segment principal de bretelle à longueur réglable. Les passages de ruban sont des opérations longues et fastidieuses.The difficulty comes from the fact that it is necessary to pass several times the ribbon in the slots of the ruler to achieve this main segment of ramp adjustable length. Ribbon passes are long and tedious operations.
On a déjà conçu des moyens permettant l'enfilage automatique du ruban dans le réglet pour former le segment principal d'une bretelle à réglet. Par exemple, les documents
Les essais ont montré que ces procédés et ces dispositifs conduisent à des défauts de fonctionnement qui les rendent inopérants pour une production industrielle. Par exemple, le ruban n'est pas correctement tenu pendant que l'on enfile les doigts d'introduction pour passer le ruban dans les fentes du réglet. Il en résulte des coulissements inacceptables dans les fentes du réglet, et des risques de blocage et de rupture ultérieurs des doigts d'introduction. En outre, on constate des défauts fréquents d'alignement de l'extrémité libre du ruban avant sa solidarisation autour de la traverse centrale du réglet, de sorte que la solidarisation n'est pas parfaite, la longueur de boucle n'est pas constante, et un bord d'extrémité libre de ruban est souvent saillant latéralement et constitue un défaut inacceptable, notamment pour une bretelle de soutien-gorge.Tests have shown that these methods and devices lead to malfunctions that render them ineffective for industrial production. For example, the ribbon is not properly held while the insertion fingers are threaded to pass the ribbon through the slots in the ruler. This results in unacceptable slippage in the slits of the ruler, and the risk of blocking and subsequent breaking of the fingers introduction. In addition, there are frequent defects of alignment of the free end of the tape before its fastening around the central beam of the rule, so that the connection is not perfect, the loop length is not constant, and an end edge Ribbon free is often protruding laterally and is an unacceptable defect, especially for a bra strap.
De plus, les dispositifs sont relativement complexes, nécessitant plusieurs doigts d'introduction, ce qui augmente leur coût de production, la difficulté des réglages, et les risques de défauts de fonctionnement.In addition, the devices are relatively complex, requiring several fingers of introduction, which increases their production cost, the difficulty of adjustments, and the risk of malfunctions.
On connaît aussi, du document
Les difficultés rencontrées avec un tel dispositif sont similaires de celles rencontrées avec les dispositifs mentionnés précédemment.The difficulties encountered with such a device are similar to those encountered with the devices mentioned above.
Le problème proposé par la présente invention est de concevoir un procédé et un dispositif de montage du segment principal d'une bretelle à réglet qui évitent les défauts de montage rencontrés avec les dispositifs connus, à savoir les défauts d'alignement de ruban dans la boucle de fixation autour de la traverse centrale du réglet, et les variations de longueur de la boucle de fixation autour de la traverse centrale du réglet.The problem proposed by the present invention is to design a method and a device for mounting the main segment of a shoulder strap which avoids the mounting defects encountered with the known devices, namely ribbon misalignment in the loop. fastening around the central beam of the rule, and the variations in length of the fastening loop around the central beam of the rule.
Selon un autre aspect, l'invention propose un procédé et un dispositif qui assurent le montage du segment principal de bretelle à réglet à l'aide de seulement un doigt d'enfilage, constituant un dispositif plus simple, plus fiable et moins onéreux.According to another aspect, the invention provides a method and a device which assures the mounting of the main strapless segment with the aid of only one threading finger, constituting a simpler, more reliable and less expensive device.
Un autre but de l'invention est de concevoir un dispositif de montage qui soit beaucoup plus simple à régler pour une adaptation à des bretelles de tailles différentes, permettant une utilisation par un personnel moins expérimenté.Another object of the invention is to design a mounting device which is much simpler to adjust for adaptation to shoulder straps of different sizes, allowing use by a less experienced staff.
Pour atteindre ces buts ainsi que d'autres, l'invention propose un procédé de montage d'un segment principal de bretelle à réglet, comprenant les étapes selon lesquelles :
- a) on tient un réglet à deux fentes selon une position initiale fixe, avec une première fente orientée transversalement et en aval, et avec une seconde fente orientée transversalement et en amont par rapport à une direction de progression,
- b) on attrape au moyen d'une pince de transfert mobile un tronçon intermédiaire d'un ruban en amont du réglet, et on déplace le ruban vers l'aval à l'aide de ladite pince de transfert pour amener son tronçon d'extrémité aval parallèlement et face au réglet, avec son extrémité libre déportée en aval du réglet,
- c) on introduit le tronçon d'extrémité aval du ruban dans la première fente du réglet, par poussée à l'aide d'un doigt d'introduction,
- d) on retire le doigt d'introduction et on fait pivoter de 180° le réglet dans un premier sens autour de la traverse centrale du réglet, de façon à amener le tronçon d'extrémité aval du ruban en aval du réglet,
- e) on introduit le tronçon d'extrémité aval du ruban dans la seconde fente du réglet par poussée à l'aide dudit doigt d'introduction,
- f) on retire le doigt d'introduction et on fait pivoter le réglet de 180° autour de la traverse centrale de réglet dans le second sens de rotation, pour engager l'extrémité libre du ruban contre la nappe amont de ruban en amont du réglet,
- g) on solidarise l'extrémité libre du ruban à la nappe amont de ruban,
- h) on tire une longueur de ruban vers l'aval par un doigt transversal d'étirement en prise sur une portion intermédiaire de ruban entre le réglet et la nappe amont de ruban,
- i) on engage un anneau parallèlement entre le réglet et la nappe amont de ruban, et on le maintient en regard du réglet,
- j) on coupe le ruban en amont du réglet, réalisant un tronçon d'extrémité amont de ruban,
- k) on introduit le tronçon d'extrémité amont de ruban dans l'anneau et dans la seconde fente du réglet, à l'aide dudit doigt d'introduction,
- l) on retire ledit doigt d'introduction, on bloque le tronçon d'extrémité amont de ruban, et on déplace vers l'aval l'anneau en coulissement sur le ruban,
- m) on fait pivoter le réglet de 180° dans le second sens de rotation autour de sa traverse centrale,
- n) on introduit le tronçon d'extrémité amont du ruban dans la première fente du réglet à l'aide dudit doigt d'introduction, et on libère le segment principal de bretelle ainsi réalisé.
- a) a two-slot rule is held in a fixed initial position, with a first slot oriented transversely and downstream, and with a second slot oriented transversely and upstream with respect to a direction of progression,
- b) a movable transfer clip is gripped by an intermediate section of a strip upstream of the rule, and the strip is moved downstream by means of said transfer clip to bring its end section downstream parallel and facing the rule, with its free end offset downstream of the rule,
- c) introducing the downstream end section of the ribbon into the first slot of the rule, by pushing with the aid of an introduction finger,
- d) the insertion finger is removed and the rule is rotated by 180 ° in a first direction around the central crossbar of the rule, so as to bring the downstream end section of the ribbon downstream of the rule,
- e) introducing the downstream end section of the ribbon into the second slot of the rule by pushing with the aid of said insertion finger,
- f) the insertion finger is removed and the rule is rotated 180 ° around the central rule beam in the second direction of rotation, to engage the free end of the ribbon against the upstream ribbon web upstream of the rule ,
- g) the free end of the ribbon is secured to the upstream ribbon web,
- h) pulling a length of ribbon downstream by a transverse stretching finger engaged on an intermediate ribbon portion between the rule and the upstream ribbon web,
- i) a ring is engaged in parallel between the ruler and the upstream ribbon ply, and is held facing the ruler,
- j) the ribbon is cut upstream of the ruler, forming an upstream end section of ribbon,
- k) introducing the upstream end section of ribbon in the ring and in the second slot of the rule, with the aid of said insertion finger,
- l) removing said insertion finger, blocking the upstream end section of ribbon, and moving downstream the ring sliding on the ribbon,
- m) the rule is rotated 180 ° in the second direction of rotation around its central crossbar,
- n) introducing the upstream end section of the ribbon in the first slot of the rule with the aid of said insertion finger, and releases the main segment of shoulder strap thus produced.
Un tel procédé permet d'éviter les défauts de montage mentionnés ci-dessus, et peut être mis en oeuvre sur un dispositif plus simple que les dispositifs connus mentionnés ci-dessus. En particulier, contrairement aux procédés connus qui nécessitent plusieurs doigts d'introduction et qui prévoient des étapes d'introduction séparées du ruban dans le réglet et dans l'anneau, le présent procédé prévoit une étape d'introduction simultanée du ruban dans le réglet et dans l'anneau, et peut être mis en oeuvre sur un dispositif n'ayant qu'un seul doigt d'introduction.Such a method avoids the mounting defects mentioned above, and can be implemented on a simpler device than the known devices mentioned above. In particular, unlike known methods which require several insertion fingers and which provide for separate introduction steps of the tape in the rule and in the ring, the present method provides for a step of simultaneously introducing the ribbon into the ruler and in the ring, and can be implemented on a device having only one input finger.
De préférence, au cours de toutes les étapes du procédé, la pince de transfert tient le ruban en amont du réglet et, au cours de l'étape b), le tronçon d'extrémité aval du ruban est guidé par des moyens de guidage en aval de la pince de transfert et poussé vers l'aval par la pince de transfert.Preferably, during all the steps of the method, the transfer clamp holds the tape upstream of the rule and, during step b), the downstream end portion of the ribbon is guided by guiding means. downstream of the transfer clamp and pushed downstream by the transfer clamp.
De cette manière, il est possible de tenir le ruban en permanence en amont du réglet, ce qui évite la plupart des défauts de réglage en longueur rencontrés avec les dispositifs connus dans lesquels les pinces de tenue de ruban se déplacent le long du ruban au cours du procédé, chaque opération de pincement du ruban entraînant une incertitude de position de la pince sur le ruban et donc une incertitude dans la longueur des boucles du ruban. En outre, la manipulation du ruban par une pince qui reste en avant du réglet et qui pousse le ruban n'applique aucune sollicitation mécanique transitoire de traction sur le tronçon aval de ruban, et évite d'induire des déformations rémanentes du ruban qui entraînent également une incertitude dans la longueur et le centrage des boucles du ruban.In this way, it is possible to hold the tape permanently upstream of the rule, which avoids most of the length adjustment defects encountered with known devices in which the tape holding clips move along the tape during of the method, each pinching operation of the ribbon causing an uncertainty of position of the clamp on the ribbon and therefore an uncertainty in the length of the ribbon loops. In addition, the manipulation of the ribbon by a clamp which remains in front of the rule and which pushes the ribbon applies no transient mechanical tensile stress on the downstream section of ribbon, and avoids inducing residual deformations of the ribbon which also cause an uncertainty in the length and centering of the ribbon loops.
De préférence, au cours de l'étape f), la pince de transfert bloque le tronçon amont de ruban à proximité du réglet, et des moyens de centrage guident l'extrémité libre du ruban pour l'engager contre le tronçon amont de ruban.Preferably, during step f), the transfer clamp blocks the upstream section of tape near the rule, and centering means guide the free end of the tape to engage against the upstream section of ribbon.
De cette manière, la prise du ruban par la pince de transfert peut être constante et parfaitement maîtrisée, pour éviter encore les défauts résultant d'une variation dans la longueur des boucles de ruban.In this way, the taking of the ribbon by the transfer clamp can be constant and perfectly controlled, to avoid further defects resulting from a variation in the length of the ribbon loops.
Dans le cas d'un ruban en un matériau susceptible de fondre par l'application d'ultrasons, au cours de l'étape g), on peut solidariser l'extrémité libre du ruban à la nappe amont de ruban par soudure par ultrasons entre une sonotrode et une enclume de soudure.In the case of a ribbon made of a material capable of melting by the application of ultrasound, during step g), the free end of the ribbon can be secured to the upstream ribbon web by ultrasonic welding between a sonotrode and an anvil welding.
De même, dans le cas d'un tel matériau, au cours de l'étape j), on peut couper le ruban par ultrasons entre une sonotrode et une enclume de coupe à arête transversale.Similarly, in the case of such a material, during step j), the tape can be ultrasonically cut between a sonotrode and a cross-cutting cutting anvil.
Selon un autre aspect, l'invention propose un dispositif pour la mise en oeuvre du procédé ci-dessus, comprenant un bâti, une réserve de ruban, une réserve de boucles, une réserve de réglets, des premiers moyens supports pour tenir un réglet en position initiale, des seconds moyens supports pour tenir un anneau, un doigt d'introduction et ses moyens d'actionnement pour lui faire traverser une fente du réglet, des moyens de maintien pour tenir le ruban, des moyens de coupe pour couper le ruban, des moyens de solidarisation pour solidariser le ruban sur lui-même, des moyens de rotation pour faire pivoter les premiers moyens supports autour de la traverse centrale du réglet, un doigt d'étirement et ses moyens d'entraînement en translation longitudinale selon la direction de progression ; selon l'invention :
- les premiers moyens supports comprennent une première traverse et une seconde traverse parallèles l'une à l'autre et entre lesquelles s'engage et est tenu le réglet,
- la première traverse forme une enclume de soudure apte à coopérer avec une sonotrode pour souder le ruban sur lui-même lors de l'étape de solidarisation.
- the first support means comprise a first crossbeam and a second crossbeam parallel to one another and between which engages and is held the ruler,
- the first cross member forms a welding anvil adapted to cooperate with a sonotrode to weld the tape on itself during the step of joining.
Un tel dispositif permet d'atteindre le but recherché, notamment par le fait que les moyens supports ainsi constitués assurent un bon guidage latéral du ruban pendant les diverses étapes du procédé. En effet, la structure particulière des premiers moyens supports leur permet d'assurer un bon guidage du tronçon libre de ruban pendant les étapes d'introduction du ruban dans le réglet, et ce guidage est particulièrement efficace au cours de l'étape qui précède la solidarisation du ruban sur lui-même, l'enclume participant alors elle-même à ce guidage.Such a device makes it possible to achieve the desired purpose, in particular by the fact that the support means thus formed ensure good lateral guidance of the tape during the various steps of the method. Indeed, the particular structure of the first support means enables them to ensure good guidance of the free ribbon section during the ribbon insertion steps in the rule, and this guidance is particularly effective during the step preceding the fastening the ribbon on itself, the anvil then participating itself in this guidance.
De préférence, les moyens pour tenir le ruban comprennent :
- une pince de transfert et des moyens pour la déplacer longitudinalement dans la direction de progression entre l'amont et l'aval tout en restant en permanence en amont des premiers moyens supports,
- un guide télescopique, associé à la pince de transfert, apte à guider le tronçon d'extrémité aval du ruban vers l'aval au-delà des premiers moyens supports, et apte à se rétracter en amont des premiers moyens supports.
- a transfer clamp and means for moving it longitudinally in the direction of progression between upstream and downstream while remaining permanently upstream of the first support means,
- a telescopic guide, associated with the transfer clamp, adapted to guide the downstream end portion of the ribbon downstream beyond the first support means, and adapted to retract upstream of the first support means.
De la sorte, la pince de transfert assure une prise constante du ruban pendant les étapes du procédé, assurant une bonne maîtrise de la longueur des boucles du ruban pendant le procédé. En outre, cette structure particulière des moyens de manipulation de ruban, avec une pince qui reste en amont du réglet et qui pousse donc le tronçon aval de ruban au lieu de le tirer, et avec un guide télescopique, assurent une manipulation douce qui évite d'appliquer sur le tronçon aval de ruban des sollicitations mécaniques transitoires de traction. De telles sollicitations de traction, qui se produisent dans les dispositifs connus, induiraient des déformations rémanentes aléatoires du ruban et une incertitude dans la longueur et le centrage des bandes du ruban. Ces défauts sont ainsi évités.In this way, the transfer clamp ensures a constant grip of the tape during the process steps, ensuring good control of the length of the tape loops during the process. In addition, this particular structure ribbon handling means, with a clamp which remains upstream of the rule and which therefore pushes the downstream section of ribbon instead of pulling it, and with a telescopic guide, ensure a smooth handling that avoids apply to the downstream section of ribbon transient mechanical tensile stresses. Such tensile stresses, which occur in known devices, would induce random remanent deformations of the ribbon and uncertainty in the length and centering of the ribbon strips. These defects are thus avoided.
De préférence, un tel dispositif est tel que :
- les premiers moyens supports sont fixes en position longitudinale dans la direction de progression,
- le doigt d'introduction et la sonotrode sont montés sur un support commun qui est lui-même déplaçable selon la direction de progression entre une première position dans laquelle le doigt d'introduction est face à la fente aval du réglet, une seconde position dans laquelle la sonotrode est en regard de la première traverse des premiers moyens supports en amont du réglet, et une troisième position dans laquelle le doigt d'introduction est face à la fente amont du réglet.
- the first support means are fixed in longitudinal position in the direction of progression,
- the insertion finger and the sonotrode are mounted on a common support which is itself displaceable in the direction of progression between a first position in which the insertion finger is facing the downstream slot of the ruler, a second position in which the sonotrode is next to the first cross first support means upstream of the rule, and a third position in which the introduction finger is facing the upstream slot of the rule.
Par cette disposition, les étapes du procédé sont réalisées à l'aide d'un seul doigt d'introduction, et le fonctionnement est particulièrement fiable.By this arrangement, the process steps are performed using a single input finger, and the operation is particularly reliable.
Selon un mode de réalisation avantageux, les seconds moyens supports pour tenir un anneau comprennent des moyens de déplacement et de maintien aptes à tenir les seconds moyens supports et l'anneau en une position fixe d'engagement face aux premiers moyens supports pour l'engagement simultané du ruban dans l'anneau et dans le réglet par le doigt d'introduction.According to an advantageous embodiment, the second support means for holding a ring comprise moving and holding means able to hold the second support means and the ring in a fixed engagement position facing the first support means for the engagement. simultaneous ribbon in the ring and in the rule by the introduction finger.
De la sorte, le dispositif est à la fois plus simple et plus efficace que les dispositifs connus. En particulier, on évite ainsi les opérations de déplacement synchronisé de l'anneau et du ruban, opérations qui, dans les dispositifs connus, induisent une coopération entre l'anneau et le ruban et nécessitent une coordination parfaite des mouvements, tout en subissant les aléas dus à la forme souvent irrégulière des rubans. L'invention permet ainsi de garantir un bon résultat avec des anneaux et des rubans de formes quelconques.In this way, the device is both simpler and more effective than known devices. In particular, the synchronized displacement operations of the ring and the ribbon are avoided, operations which, in the known devices, induce a cooperation between the ring and the ribbon and require a perfect coordination of the movements, while undergoing the hazards. due to the often irregular shape of the ribbons. The invention thus makes it possible to guarantee a good result with rings and ribbons of any shape.
D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles :
- les
figures 1 illustrent, respectivement en vue de côté et en vue de face, la structure d'une bretelle à réglet, après montage ;et 2 - la
figure 3 est une vue de côté schématique illustrant la position des différents organes principaux du dispositif de montage selon l'invention au cours d'une première étape du procédé, le réglet étant tenu dans un support ; - la
figure 4 illustre le dispositif de lafigure 1 lors du transfert du ruban face au réglet ; - la
figure 5 illustre le dispositif de lafigure 1 lors du retrait du guide télescopique lors du transfert du ruban ; - la
figure 6 illustre le dispositif de lafigure 1 lors de l'étape de première pénétration du ruban par le doigt d'introduction dans le réglet ; - la
figure 7 illustre le dispositif de lafigure 1 lors d'une étape de retrait complémentaire du guide télescopique ; - la
figure 8 illustre le dispositif de lafigure 1 lors du retrait du doigt d'introduction; - la
figure 9 illustre le dispositif de lafigure 1 lors du premier retournement du réglet ; - la
figure 10 illustre l'étape de seconde pénétration du ruban par le doigt d'introduction dans le réglet ; - la
figure 11 illustre l'étape suivante du retrait du doigt d'introduction ; - la
figure 12 illustre l'étape du second retournement du réglet, avec déplacement de la sonotrode et du doigt d'introduction vers l'aval ; - la
figure 13 illustre l'étape de relâchement de la pince après retournement du réglet ; - la
figure 14 illustre une étape de soutien d'enclume ; - la
figure 15 illustre l'étape de solidarisation de la boucle de fixation par soudure ; - la
figure 16 illustre le retrait de la sonotrode après la solidarisation, et l'étape d'étirement de boucle de réglage par le doigt transversal d'étirement ; - la
figure 17 illustre l'étape de déplacement du doigt d'insertion et de la sonotrode vers l'amont ; - la
figure 18 illustre le serrage du ruban par la pince de transfert ; - les
figures 19 et20 illustrent l'étape d'amenée d'un anneau face au réglet ; - les
figures 21 et22 illustrent le blocage du ruban contre l'anneau, et la coupe du ruban en amont du réglet par une enclume de coupe ; - les
figures 23 et24 illustrent le retrait des moyens de coupe du ruban ; - la
figure 25 illustre l'étape de troisième pénétration, au cours de laquelle le doigt d'introduction traverse à la fois la boucle et le réglet pour engager le ruban dans les deux éléments simultanément ; - la
figure 26 illustre l'étape suivante de retrait du doigt d'introduction ; - la
figure 27 illustre l'étape suivante de blocage de l'extrémité libre amont du ruban ; - la
figure 28 illustre l'étape de transfert de l'anneau vers l'aval ; - les
figures 29 et30 illustrent l'étape de libération de ruban et de troisième retournement du réglet ; - les
figures 31 et32 illustrent une étape de blocage du ruban et de quatrième pénétration dans le réglet ; - les
figures 33 et34 illustrent les opérations de libération du segment principal de bretelle ; et - la
figure 35 est une vue schématique de face d'un dispositif mettant en oeuvre le procédé ci-dessus.
- the
Figures 1 and 2 illustrate, respectively in side view and in front view, the structure of a strapless strap after assembly; - the
figure 3 is a schematic side view illustrating the position of the various main organs of the mounting device according to the invention during a first step of the method, the rule being held in a support; - the
figure 4 illustrates the device of thefigure 1 when transferring the ribbon to the ruler; - the
figure 5 illustrates the device of thefigure 1 when removing the telescopic guide when transferring the ribbon; - the
figure 6 illustrates the device of thefigure 1 during the step of first penetration of the ribbon by the insertion finger in the ruler; - the
figure 7 illustrates the device of thefigure 1 during a step of complementary withdrawal of the telescopic guide; - the
figure 8 illustrates the device of thefigure 1 when removing the introductory finger; - the
figure 9 illustrates the device of thefigure 1 during the first reversal of the rule; - the
figure 10 illustrates the step of second penetration of the ribbon by the introduction finger in the ruler; - the
figure 11 illustrates the next step of removing the introductory finger; - the
figure 12 illustrates the step of the second reversal of the rule, with displacement of the sonotrode and the introduction finger downstream; - the
figure 13 illustrates the step of releasing the clamp after turning the ruler; - the
figure 14 illustrates an anvil support stage; - the
figure 15 illustrates the step of securing the weld fixing loop; - the
figure 16 illustrates the removal of the sonotrode after joining, and the step of stretching adjustment loop by the transverse stretching finger; - the
figure 17 illustrates the step of moving the insertion finger and the sonotrode upstream; - the
figure 18 illustrates the tightening of the ribbon by the transfer clip; - the
figures 19 and20 illustrate the step of feeding a ring facing the ruler; - the
figures 21 and22 illustrate the locking of the ribbon against the ring, and the section of the ribbon upstream of the rule by a cutting anvil; - the
figures 23 and24 illustrate the removal of the cutting means of the ribbon; - the
figure 25 illustrates the third penetration step, in which the introducer finger passes through both the loop and the ruler to engage the ribbon in both elements simultaneously; - the
figure 26 illustrates the next step of removing the introductory finger; - the
figure 27 illustrates the next step of blocking the upstream free end of the ribbon; - the
figure 28 illustrates the step of transferring the ring downstream; - the
figures 29 and30 illustrate the step of releasing ribbon and third flipping of the ruler; - the
figures 31 and32 illustrate a step of locking the ribbon and fourth penetration into the ruler; - the
figures 33 and34 illustrate the release operations of the main strap segment; and - the
figure 35 is a schematic front view of a device implementing the above method.
Les
Le réglet 6, comme illustré sur les figures, est un anneau double en 8 aplati, définissant une première fente 8 et une seconde fente 9, orientées toutes deux transversalement, et séparées l'une de l'autre par une traverse centrale 10.The
Dans le segment principal de bretelle 1, une première extrémité 11 du ruban 7 est conformée en boucle solidarisée sur elle-même autour de la traverse centrale 10, puis le ruban 7 est formé selon une boucle de réglage 12 passant dans l'anneau de liaison 5. Le ruban 7 passe ensuite dans la seconde fente 9 et dans la première fente 8 pour ressortir selon un tronçon amont 13.In the
On peut concevoir que l'opération consistant à enfiler le ruban 7 dans le réglet 6 et dans l'anneau de liaison 5 est relativement longue et fastidieuse, et que cette opération est en outre délicate car elle dépend fortement des conditions de glissement entre le ruban 7 et le réglet 6. On est donc conduit à rechercher des moyens permettant l'enfilage du ruban 7 dans le réglet 6 qui soient aptes à assurer cet enfilage pour des structures de ruban de formes diverses, lisses ou rugueuses, larges ou étroites.It is conceivable that the operation of threading the
En particulier, il faut assurer un bon guidage du ruban 7 de façon à éviter que sa première extrémité 11 soit déportée latéralement comme illustré en pointillés sur la
In est également nécessaire de bien contrôler la fixation du ruban 7 sur le réglet 6, notamment pour produire un segment principal de bretelle 1 dont la longueur L est parfaitement maîtrisée et constante dans une production en série.It is also necessary to control the fastening of the
On considère maintenant les
On repère tout d'abord les moyens constituant le segment principal de bretelle 1 à assembler, qui se retrouvent sur chaque figure.We first identify the means constituting the main segment of
On distingue ainsi l'anneau 5, le réglet 6, le ruban 7, ainsi que la première fente 8, la seconde fente 9 et la traverse centrale 10 du réglet 6.We thus distinguish the
On repère ensuite les éléments essentiels du dispositif de mise en oeuvre de ce procédé, qui se retrouvent sur chacune des figures.The essential elements of the device for carrying out this process, which are found in each of the figures, are then identified.
On distingue ainsi une pince de transfert 20, un doigt d'introduction 21, une sonotrode 22, une enclume de soudure 23, un support d'enclume escamotable 24, une enclume de coupe 25, un doigt d'étirement 26, des moyens de guidage comportant un guide télescopique 27 associé à la pince de transfert 20, et un patin de serrage 28.A
Enfin, on distingue des premiers moyens supports 29 aptes à tenir le réglet 6 en positions appropriées pour les diverses étapes du procédé.Finally, there are first support means 29 capable of holding the
On définit une direction de progression longitudinale, illustrée par la flèche 30, ou direction selon laquelle on dévide le ruban 7 à partir d'une réserve de ruban non illustrée sur ces
Dans le mode de réalisation illustré, on considère que le ruban 7 est amené dans un plan sensiblement horizontal, le doigt d'introduction 21 et la sonotrode 22 étant disposés au-dessus du plan de progression générale du ruban 7, tandis que l'enclume de soudure 23, l'enclume de coupe 25, le support d'enclume escamotable 24 et les premiers moyens supports 29 sont disposés au-dessous du plan général de progression du ruban 7.In the illustrated embodiment, it is considered that the
Les premiers moyens supports 29 comprennent une première traverse 29a et une seconde traverse 29b, généralement perpendiculaires à la direction de progression 30, et entre lesquelles s'engage et est tenu le réglet 6. La première traverse 29a comporte une face supérieure qui constitue l'enclume de soudure 23, apte à coopérer avec la sonotrode 22.The first support means 29 comprise a
Les premiers moyens supports 29 sont fixes en position longitudinale dans la direction de progression 30, mais sont montés pivotants autour d'un axe transversal colinéaire à la traverse 10. On considérera que les premiers moyens supports 29 peuvent pivoter autour de la traverse 10, selon une amplitude de 360°.The first support means 29 are fixed in longitudinal position in the direction of
Le doigt d'introduction 21, le patin de serrage 28 et la sonotrode 22 sont montés sur un support commun 31, schématiquement illustré en pointillés, qui est lui-même déplaçable selon la direction de progression 30 entre trois positions : dans une première position, illustrée sur la
La pince de transfert 20 peut prendre deux états, à savoir un état relâché illustré sur la
Le guide télescopique 27 est associé à la pince de transfert 20, c'est-à -dire qu'il se déplace en mouvement longitudinal avec la pince de transfert 20 lors de ses mouvements entre la position de retrait (
Lorsque la pince de transfert 20 est en position de retrait, le guide télescopique 27 est dans tous les cas en amont des premiers moyens supports 29. Lorsque la pince de transfert 20 est en position rapprochée, le guide télescopique 27 a son extrémité aval 27a située au regard de la traverse aval des premiers moyens supports 29 (la traverse 29b sur la
Le support d'enclume escamotable 24 est par exemple une pièce montée pivotante autour d'un axe inférieur transversal 24a, entre une position escamotée illustrée sur la
Le patin de serrage 28, monté sur le support commun 31, est déplaçable verticalement entre une position de retrait, illustrée sur la
Le guide télescopique 27 est conformé en gouttière pour supporter un tronçon d'extrémité de ruban et pour le guider latéralement, depuis la pince de transfert 20 jusqu'à son extrémité aval 27a, tout en pouvant coulisser le long du ruban 7 dans la direction de progression 30.The
A l'état initial tel qu'illustré sur la
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La sonotrode 22 assure alors la soudure de la portion de tronçon d'extrémité aval 7b du ruban 7 voisine de l'extrémité libre 7a sur la nappe amont 7d qui lui est juxtaposée entre la sonotrode 22 et l'enclume de soudure 23.The
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La première fente 8 du réglet 6 se retrouve alors face au doigt d'introduction 21, qui est toujours dans sa troisième position longitudinale.The
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On retrouve sur cette figure les moyens essentiels illustrés sur les
Ces moyens sont portés par un bâti 100, lequel peut comporter une réserve de ruban, une réserve de boucles, une réserve de réglets, et des moyens pour tenir et placer les différents éléments actifs du dispositif.These means are carried by a
On distingue aussi sur cette
Les moyens de déplacement et de maintien 135 sont aptes à tenir le support d'anneau 35 et l'anneau 5 en position fixe d'engagement face aux premiers moyens supports 29 pour permettre l'engagement simultané du ruban 7 dans l'anneau 5 et dans le réglet 6 (
Le doigt d'étirement 26 est déplacé par des moyens d'entraînement 26a en translation longitudinale selon la direction de progression 30.The stretching
La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof within the scope of the claims below.
Claims (10)
- Method for assembling a main segment (1) of a shoulder strap with figure-of-eight ring, comprising the steps according to which:a) a figure-of-eight ring (6) with two slits (8, 9) is held according to a fixed initial position, with a first slit (8) oriented transversely and downstream, and with a second slit (9) oriented transversely and upstream relative to a direction of advance (30),b) an intermediate section of a band (7) upstream of the figure-of-eight ring (6) is caught by means of a mobile transfer clamp (20), and the band (7) is displaced in the downstream direction with the aid of said transfer clamp (20) to bring its downstream end section (7b) parallel to and facing the figure-of-eight ring (6), with its free end (7a) away from, in the downstream direction, the figure-of-eight ring (6),c) the downstream end section (7b) of the band (7) is introduced into the first slit (8) of the figure-of-eight ring (6) by pushing using an introducing finger (21),d) the introducing finger (21) is withdrawn and the figure-of-eight ring (6) is pivoted by 180° in a first direction (32) about the central crossmember (10) of the figure-of-eight ring (6), so as to bring the downstream end section (7b) of the band (7) downstream of the figure-of-eight ring (6),e) the downstream end section (7b) of the band (7) is introduced into the second slit (9) of the figure-of-eight ring (6) by pushing using said introducing finger (21),f) the introducing finger (21) is withdrawn and the figure-of-eight ring (6) is pivoted by 180° about the central crossmember (10) of the figure-of-eight ring in the second direction of rotation (33), to engage the free end (7a) of the band (7) against the upstream lap (7d) of band upstream of the figure-of-eight ring (6),g) the free end (7a) of the band (7) is secured to the upstream lap (7d) of band,h) a length of band is pulled in the downstream direction by a transverse stretching finger (26) engaged on an intermediate portion (7c) of band between the figure-of-eight ring (6) and the upstream lap (7d) of band,i) a ring (5) is engaged parallel between the figure-of-eight ring (6) and the upstream lap (7d) of band, and it is held facing the figure-of-eight ring (6),j) the band (7) is cut upstream of the figure-of-eight ring (6), producing an upstream end section (7e) of band,k) the upstream end section (7e) of band is introduced into the ring (5) and into the second slit (9) of the figure-of-eight ring (6), using said introducing finger (21),l) said introducing finger (21) is withdrawn, the upstream end section (7e) of band is immobilized, and the ring (5) is moved in the downstream direction by sliding on the band (7),m) the figure-of-eight ring (6) is pivoted by 180° in the second direction of rotation (33) about its central crossmember (10),n) the upstream end section (7e) of the band is introduced into the first slit (8) of the figure-of-eight ring (6) using said introducing finger (21), and the main shoulder strap segment (1) thus produced is released.
- Method according to Claim 1, characterized in that, during all the steps of the method, the transfer clamp (20) holds the band (7) upstream of the figure-of-eight ring (6) and, during the step b), the downstream end section (7b) of the band (7) is guided by guiding means (27) downstream of the transfer clamp (20) and pushed in the downstream direction by the transfer clamp (20).
- Method according to one of Claims 1 or 2, characterized in that, during the step f), the transfer clamp (20) immobilizes the upstream section (7d) of band in proximity to the figure-of-eight ring (6), and centring means (29) guide the free end (7a) of the band to engage it against the upstream section (7d) of band.
- Method according to any of Claims 1 to 3, characterized in that, during the step g), the free end (7a) of the band (7) is secured to the upstream lap (7d) of band by ultrasound welding between a sonotrode (22) and the welding anvil (23).
- Method according to any of Claims 1 to 4, characterized in that, during the step j), the band (7) is cut by ultrasound between a sonotrode (22) and a cutting anvil (25) with transverse edge.
- Device for implementing the method according to any of Claims 1 to 5, comprising a frame (100), a reserve of band, a reserve of loops, a reserve of figure-of-eight rings, first support means (29) for holding a figure-of-eight ring (6) in initial position, second support means (35) for holding a ring (5), an introducing finger (21) and actuation means (21a) thereof to make it pass through a slit (8, 9) of the figure-of-eight ring (6), securing means (20, 27, 29) for holding the band (7), cutting means (22, 25) for cutting the band (7), securing means (22, 23) for securing the band (7) on itself, rotation means (29c) for pivoting the first support means (29) about the central crossmember (10) of the figure-of-eight ring (6), a stretching finger (26) and means (26a) for driving the latter in longitudinal translation in the direction of advance (30), characterized in that:- the first support means (29) comprise a first crossmember (29a) and a second crossmember (29b) parallel to one another and between which the figure-of-eight ring (6) is engaged and is held,- the first crossmember (29a) forms a welding anvil (23) capable of cooperating with a sonotrode (22) for welding the band (7) on itself in the securing step.
- Device according to Claim 6, characterized in that the means for holding the band (7) comprise:- a transfer clamp (20) and means (34) for moving it longitudinally in the direction of advance (30) between upstream and downstream while remaining permanently upstream of the first support means (29),- a telescopic guide (27), associated with the transfer clamp (20), capable of guiding the downstream end section (7b) of the band (7) in the downstream direction beyond the first support means (29), and capable of being retracted upstream of the first support means (29).
- Device according to one of Claims 6 or 7, characterized in that:- the first support means (29) are fixed in longitudinal position in the direction of advance (30),- the introducing finger (21) and the sonotrode (22) are mounted on a common support (31) which can itself be moved in the direction of advance (30) between a first position in which the introducing finger (21) is facing the downstream slit (8) of the figure-of-eight ring (6), a second position in which the sonotrode (22) is facing the first crossmember (29a) upstream of the figure-of-eight ring (6), and a third position in which the introducing finger (21) is facing the upstream slit (9) of the figure-of-eight ring (6).
- Device according to any of Claims 6 to 8, characterized in that the second support means (35) for holding a ring (5) comprise moving and holding means (135) capable of holding the second support means (35) and the ring (5) in a fixed position of engagement facing the first support means (29) for the simultaneous engagement of the band (7) in the ring (5) and in the figure-of-eight ring (6) by the introducing finger (21).
- Device according to any of Claims 6 to 9, characterized in that it comprises a single introducing finger (21).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0850936A FR2927509B1 (en) | 2008-02-14 | 2008-02-14 | METHOD AND DEVICE FOR MOUNTING STRUCTURE STRAPS |
PCT/IB2009/050606 WO2009101601A2 (en) | 2008-02-14 | 2009-02-13 | Method and device for assembling shoulder straps having a figure-of-eight ring |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2242387A2 EP2242387A2 (en) | 2010-10-27 |
EP2242387B1 true EP2242387B1 (en) | 2016-12-14 |
Family
ID=39885002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09710832.8A Active EP2242387B1 (en) | 2008-02-14 | 2009-02-13 | Method and device for assembling shoulder straps having a figure-of-eight ring |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2242387B1 (en) |
FR (1) | FR2927509B1 (en) |
WO (1) | WO2009101601A2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2515009A1 (en) * | 1981-10-23 | 1983-04-29 | Mecanique Ste Forezienne | METHOD AND MEANS FOR THREADING BUCKLES ON STRAPS, ESPECIALLY STRAPS OF GLOVES AND OTHER UNDERWEAR AND CLOTHES |
FR2631788B1 (en) * | 1988-05-31 | 1990-09-07 | Atamec Crozet Fourneyron | METHOD AND DEVICE FOR MANUFACTURING STRAPS FOR WOMEN'S UNDERWEAR |
FR2638069B1 (en) * | 1988-10-21 | 1991-11-08 | Cera France | METHOD AND DEVICE FOR MAKING A GARMENT STRAP SUCH AS A BRA STRAP |
-
2008
- 2008-02-14 FR FR0850936A patent/FR2927509B1/en not_active Expired - Fee Related
-
2009
- 2009-02-13 WO PCT/IB2009/050606 patent/WO2009101601A2/en active Application Filing
- 2009-02-13 EP EP09710832.8A patent/EP2242387B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
WO2009101601A3 (en) | 2009-10-08 |
EP2242387A2 (en) | 2010-10-27 |
FR2927509B1 (en) | 2010-03-26 |
WO2009101601A2 (en) | 2009-08-20 |
FR2927509A1 (en) | 2009-08-21 |
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