EP0124459A1 - Semi-automatic apparatus to line up the patterns of pocket flaps on the frontispieces of jackets - Google Patents

Abstract

1. A semi-automatic machine to line up the patterns of pocket flaps on the front of a jacket and to stack the positioned parts automatically, comprising a first positioning area (1) which is retractable by pivoting, consists of two flaps (8) movable about pins (9) and is mounted on a fixed frame (2), and a stacking plate (7) which is movable vertically inside the fixed frame (2) and displaceable transversely out of the latter, a frame (3) which is movable vertically inside the fixed frame (2) and supports a longitudinally slidable device (4) equipped with a second positioning area (5) which can be applied against the first in the operating position, by a device (6) for gripping a piece of cloth on the second positioning area (5), which is rigidly connected to the slidable device (4) and movable in relation to the latter, the end of the pins (9) of the movable flaps (8) being connected, by means of a cable (10) passing over guide pulleys (11), to a rod (12) of an actuating jack (13).

Description

The present invention relates to the field of industrial clothing, in particular the operation of aligning the designs, such as stripes or tiles, of a piece of fabric to be used as a pocket flap with the designs of a front of jacket, and relates to a semi-automatic machine for positioning such flaps and for automatic stacking of positioned parts.

Currently, this alignment is generally carried out manually, or even by means of automatic devices proceeding by perforation of the flaps as well as of the front of the jacket.

However, the manual realization of this operation requires a relatively long time as well as a relatively long training of the operator. The use of an automatic fabric perforation machine, in particular in the front of the jacket, in several places is generally limited by a reduced stacking capacity.

The present invention aims to overcome these drawbacks.

It has, in effect, a semi-machine automatic for aligning the drawings of the pocket flaps on a front of a jacket, and the automatic stacking of positioned parts _/ characterized in that it is essentially constituted by a first retractable positioning area by pivoting, mounted on a fixed frame , by a chassis movable vertically inside the fixed chassis, supporting a longitudinal sliding device provided with a second positioning area which can be pressed onto the first in the service position, by a device for pinching a piece of fabric on the second positioning area, integral with the sliding device and movable relative to the latter, and by a stacking plate movable vertically inside the fixed frame, and movable tansversalement out of the latter.

• La figure 1 est une vue en élévation latérale d'une machine conforme à l'invention ;
• La figure 2 est une vue en élévation arrière suivant la figure 1 ;
• La figure 3 est une vue en plan de la machine en position de mise en place d'un devant de veston ;
• La figure 4 montre les phases successives de superposition a à c d'un devant de veston et d'un rabat de poche ;
• La figure 5 représente les diverses étapes a à n du positionnement et de l'empilage des pièces de tissu, et
• la figure 6 est une vue en perspective du plateau d'empilage.

The invention will be better understood from the description below, which relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the appended schematic drawings, in which:

• Figure 1 is a side elevational view of a machine according to the invention;
• Figure 2 is a rear elevational view according to Figure 1;
• Figure 3 is a plan view of the machine in the position of fitting a jacket front;
• Figure 4 shows the successive phases of superimposition a to c of a jacket front and a pocket flap;
• FIG. 5 represents the various steps a to n of positioning and stacking the pieces of fabric, and
• Figure 6 is a perspective view of the stacking plate.

In accordance with the invention, and as shown more particularly, by way of example, FIGS. 1 to 3 of the accompanying drawings, the semi-automatic machine for aligning the drawings of the pocket flaps on a front of a jacket, and automatic stacking of positioned parts is essentially constituted by a first positioning area 1 retractable by pivoting, which is mounted on a fixed frame 2, by a frame 3 movable vertically inside the frame 2, and supporting a longitudinal sliding device 4 provided with a second area position 5, which can be pressed on the first in the service position. On this positioning area 5 can be pinched a piece of fabric by means of a pinching device 6 secured to the sliding device 4 and movable relative to the latter. Finally, inside the fixed frame 2 is provided a stacking plate 7 movable vertically, and which can be moved out of said frame 2 by a movement transverse to its longitudinal axis.

The first positioning area 1, retractable by pivoting, is constituted by two flaps 8 movable around axes 9, and the free end of which is connected, by means of a cable 10 passing over return pulleys 11, to a rod 12 of an actuating cylinder 13. Thus, at each exit from the rod 12 of the cylinder 13, the flaps 8 can pivot downward under the effect of their weight, and the withdrawal of said rod from the cylinder causes a traction on the cable 10 having the effect of bringing them back to a horizontal position.

The chassis 3 is guided vertically in bearings 14 of the chassis 2 by means of axes 15 and is displaceable in height by virtue of an eccentric 16 articulated on the base of the chassis 2 and bearing under the chassis 3, this eccentric 16 being actuated by means of a lever 17 by a jack 18, and a counterweight 19, connected to the upper part of the / chassis 3 by one or more cables 20 passing over one or more deflection pulleys 21 integral with the chassis 2, ensures a partial compensation of the chassis weight 3.

The longitudinal sliding device 4 is constituted by a carriage 22, guided in translation on axes 23 of the chassis 2, actuated in displacement by means of a jack 24 integral with the chassis 2, and carrying at its anterior end the second positioning area 5 which is made of a rigid transparent material of small thickness, and is provided with two longitudinal grooves 25.

The clamping device 6 is constituted by a carriage 26 guided longitudinally with respect to the sliding device 4 by means of two axes 27 integral with the latter, and movable on said device 4 by means of a jack 28 fixed on the carriage 22 of the device 4, and by a retaining plate 29 movable vertically relative to the carriage 26 by means of a jack 30 fixed on the carriage 26, this plate 29 being guided on said carriage 26 by means of rods 31 and being advantageously provided with four holes 32 arranged in a square or rectangle and aligned in pairs with the axis of the longitudinal grooves 25 of the positioning area 5.

According to another characteristic of the invention, the positioning area 1 is provided with reference lines I and M perpendicular to each other, one of which, I, advantageously corresponds to the joint plane between the flaps8 and of which the others, M , are aligned with the axes of the longitudinal grooves 25.

The stacking plate 7 can be moved vertically by means of a double-acting cylinder 33 with pressure balancing device mounted on a carriage 34, is guided relative to the latter by means of one or more axes 35, and is provided with a removable plate 36 provided with two or three needles 37 whose arrangement corresponds to that of the holes 32 in the plate 29 of the clamping device 6.

The removable plate 36 is advantageously fixed in a housing 36 'of the plate 7 by means of magnets 36 "and centering and positioning elements 36"' (Figure 6)

The carriage 34 for supporting the plate 7 can be moved transversely out of the fixed frame 2 by means of axes of guide 38 integral with the latter and a jack 39.

The machine according to the invention is further provided with a manual control device constituted by two push-buttons 40 arranged under the positioning area 1, and an optical device 41 secured to the chassis 2 and analyzing the vertical movement of the mobile chassis 3.

Finally, servo devices necessary for the synchronization of the various mobile elements are fitted _. in known manner, the machine according to the invention.

The counterweight 19 makes it possible to exert a controlled pressure on the stacking plate 7, and, due to the actuation of the chassis 3 by means of the eccentric 16, its lifting and lowering are ensured with a regularity of perfect speed and with total freedom of movement upwards, no mechanical drive link being provided between the fixed chassis 2 and the mobile chassis 3.

• Les dispositifs 4 et 6 étant en position arrière, c'est-à-dire leur chariot 22 et 26 étant rétractés contre les vérins respectifs 24 et 28 et le châssis 3 étant en position haute sous l'action de l'excentrique 16, l'aire de positionnement 1, avec ses volets mobiles 8, est accessible, et un devant de veston 42 (figure 4a) peut être placé sur lesdits volets 8 suivant les lignes de référence I et M du veston, qui doivent être confondues avec celles de l'aire de positionnement 1. Ces lignes de référence du devant du veston sont une découpe droite due à une fabrication antérieure appelée "découpe pince poitrine" et "découpe poche". Après réalisation de ce positionnement (figure 5a), l'opérateur actionne les boutons-poussoirs 40, ce qui a pour effet de faire avancer le dispositif 4 au-dessus de l'aire de positionnement 1 (figure 5b) et de bloquer la pièce de tissu 42 (ou devant de veston) par abaissement de la deuxième aire de positionnement 5 au-dessus de la première, suite à une rotation de l'excentrique 16 sous l'action de son vérin d'entraînement 18 et à la descente du châssis mobile 3 (figure 5 c). L' opérateur prend alors la pièce de tissu 43 (figure 4 a) correspondant à la poche ou au rabat de poche et la pose sur la deuxième aire de positionnement 5 (figure 5 d), où elle est positionnée en fonction de ses dessins ou rayures Y et X (figure 4 b), de telle sorte qu'elle couvre les points de référence H' et H, et, après obtention d'une superposition exacte, l'opérateur actionne à nouveau les boutons-poussoirs 40 de manière à faire avancer la plaquette de maintien 29 au-dessus de la pièce 43. Arrivée au-dessus de cette dernière, c'est-à-dire en fin de course du vérin 28 et du chariot 26, la plaquette 29 est serrée sur la pièce 43 au moyen de son vérin 30 et applique fortement ladite pièce 43 sur l'aire 5 (figure 5 e). Tout le dispositif coulissant longitudinal 4 est alors soulevé, ensemble avec le châssis mobile 3, au moyen de l'excentrique 16 et, simultanément, les volets 8 de l'aire 1 s'escamotent rapidement vers le bas pour l'empilage de la pièce 42 du devant de veston sur une plate-forme 44 (figure 5 f). Au cours de cette dernière opération, le dispositif coulissant 4 revient à sa position de départ (figure 5 g), dans laquelle le plateau d'empilage 7 monte sous l'action de son vérin 33 en direction de l'aire 5, de la pièce 43 et de la plaquette de maintien 29,et ses aiguilles 37 transpercent l'ensemble au niveau des rainures 25 et des trous 32 de l'aire 5 et de la plaquette 29 (figures 5 h et i). Du fait de son inertie, le plateau 7 communique à l'ensemble précité un mouvement d'accompagnement vers le haut d'une amplitudel 1, qui est rendu possible grâce au montage libre du châssis mobile 3 (figure 5 j). La différence qui en sésulte avec l'écartement.L normal de l'ensemble à l'aire de positionnement 1 (figure 5 i), c'est-à-dire ℓ1 - ℓ, est prise en mémoire par le dispositif optique 41, qui délivre une impulsion de commande d'envoi d'une contre-pression dans le vérin 33 destinée à supprimer son énergie ascensionnelle. Le poids du châssis 3 créé alors une force de descente, qui ramène ce dernier en contact avec l'excentrique 16 dans une position qui correspond à un équilibrage des pressions dans les chambres du vérin 33 et à une immobilisation du plateau 7 juste au-dessous de l'aire de positionnement 5. A ce moment, la plaquette de maintien 29 est soulevée de la pièce 43 et des aiguilles 37 et est ramenée à sa position de départ par les vérins 30 et 28 (figures 5 k et ₁). Lors de la mise en place du devant de veston 42 suivante et après actionnement des boutons-poussoirs 40, l'aire de positionnement 5 provoque, au cours de son déplacement en direction de l'aire 1, la libération de la pièce de tissu 43, qui est fixée par les aiguilles 37 sur le plateau 7 à une distance de ce dernier correspondant à l'épaisseur de l'aire 5, son pressage sur le plateau 7 s'effectuant seulement lors de l'empilage de la pièce 43 suivante (figures 5 m et n). Après l'obtention d'une pile de pièces de tissu 43 sur le plateau 7, ce dernier est déplacé hors du châssis 2 par action sur un bouton-poussoir 45, au moyen du vérin 39 d'entraînement du chariot de support 34, et la plaquette amovible 36 avec les aiguilles 37 est retirée de son logement sur le plateau 7 (figure 6).

The semi-automatic machine according to the invention is implemented as follows:

• The devices 4 and 6 being in the rear position, that is to say their carriage 22 and 26 being retracted against the respective jacks 24 and 28 and the chassis 3 being in the high position under the action of the eccentric 16, l positioning area 1, with its movable flaps 8, is accessible, and a jacket front 42 (FIG. 4a) can be placed on said flaps 8 along the reference lines I and M of the jacket, which must be confused with those of the positioning area 1. These reference lines of the front of the jacket are a straight cut due to an earlier manufacture called "chest clip cut" and "pocket cut". After this positioning has been carried out (FIG. 5a), the operator actuates the push buttons 40, which has the effect of advancing the device 4 above the positioning area 1 (FIG. 5b) and blocking the part. fabric 42 (or jacket front) by lowering the second position area 5 above the first, following a rotation of the eccentric 16 under the action of its drive cylinder 18 and the descent of the movable frame 3 (Figure 5 c). The operator then takes the piece of fabric 43 (FIG. 4 a) corresponding to the pocket or the pocket flap and places it on the second positioning area 5 (FIG. 5 d), where it is positioned according to his drawings or stripes Y and X (FIG. 4 b), so that it covers the reference points H 'and H, and, after obtaining an exact superposition, the operator actuates the pushbuttons 40 again so as to advancing the retaining plate 29 above the part 43. Arrival above the latter, that is to say at the end of travel of the jack 28 and of the carriage 26, the plate 29 is clamped on the part 43 by means of its jack 30 and strongly applies said part 43 to the area 5 (FIG. 5 e). The entire longitudinal sliding device 4 is then lifted, together with the mobile chassis 3, by means of the eccentric 16 and, simultaneously, the flaps 8 of the area 1 quickly retract downwards for stacking the part. 42 of the front of the jacket on a platform 44 (FIG. 5 f). During this last operation, the sliding device 4 returns to its starting position (FIG. 5 g), in which the stacking plate 7 rises under the action of its jack 33 in the direction of the area 5, of the piece 43 and the holding plate 29, and its needles 37 pierce the assembly at the level of the grooves 25 and the holes 32 of the area 5 and of the plate 29 (FIGS. 5 h and i). Due to its inertia, the plate 7 communicates to the aforementioned assembly an upward movement of an amplitude 1, which is made possible by the free mounting of the movable chassis 3 (Figure 5 j). The difference which results from this with the normal spacing. L of the assembly at positioning area 1 (FIG. 5 i), i.e. dire1 - ℓ, is taken into memory by the optical device. 41, which delivers a command pulse to send a back pressure in the jack 33 intended to suppress its upward energy. The weight of the chassis 3 then creates a lowering force, which brings the latter back into contact with the eccentric 16 in a position which corresponds to a balancing of the pressures in the chambers of the jack 33 and to an immobilization of the plate 7 just below of the positioning area 5. At this time, the retaining plate 29 is lifted from the part 43 and the needles 37 and is returned to its starting position by the jacks 30 and 28 (FIGS. 5 k and ₁ ). During the establishment of the next jacket front 42 and after actuation of the push buttons 40, the positioning area 5 causes, during its movement towards area 1, the release of the piece of fabric 43 , which is fixed by the needles 37 on the plate 7 at a distance from the latter corresponding to the thickness of the area 5, its pressing on the plate 7 being effected only during the stacking of the next part 43 ( Figures 5 m and n). After obtaining a stack of pieces of fabric 43 on the plate 7, the latter is moved out of the frame 2 by action on a push button 45, by means of the jack 39 driving the support carriage 34, and the removable plate 36 with the needles 37 is removed from its housing on the plate 7 (Figure 6).

The removable plate 36 with its fabric stacking is then brought to another work station with a view to cutting it after application of a template K (FIG. 4 c), which corresponds to the flap model to be obtained, and which is positioned at the by means of needles 37, the ends of which extend beyond the top of the pile. The cutting is carried out by means of a band saw by guiding on the edges of the template, then the wafer 36 is mechanically or manually detached from said stack with a view to its reuse on the plate 7 of the machine.

Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements, or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (9)

1. Semi-automatic machine for aligning the drawings of the pocket flaps on a jacket front, and the automatic stacking of the positioned pieces, characterized in that it is essentially constituted by a first retractable positioning area (1) by pivoting, mounted on a fixed frame (2), by a frame (3) movable vertically inside the fixed frame (2), supporting a longitudinal sliding device (4) provided with a second positioning area (5) can be pressed onto the first in the service position, by a device (6) for pinching a piece of fabric on the second positioning area (5), integral with the sliding device (4) and movable relative to the latter, and by a stacking plate (7) movable vertically inside the fixed frame (2), and movable transversely out of the latter. 2. Machine according to claim 1, characterized in that the first positioning area (1), retractable by pivoting, is constituted by two flaps (8) movable around axes (9), and the end of which is connected , by means of a cable (10) passing over idler pulleys (11), to a rod (12) of an actuating cylinder (13). 3. Machine according to claim 1, characterized in that the chassis (3) is guided vertically in bearings (14) of the chassis (2) by means of pins (15) and is displaceable in height by virtue of an eccentric ( 16) articulated on the base of the chassis (2) and bearing under the chassis (3), this eccentric (16) being actuated by means of a lever (17) by a jack (18), and a counterweight (19), connected to the upper part of the chassis (3) by one or more cables (20) passing over one or more deflection pulleys (21) integral with the chassis (2) , provides partial compensation for the weight of the chassis (3). 4. Machine according to claim 1, characterized in that the longitudinal sliding device (4) consists of a carriage (22), guided in translation on axes (23) of the chassis (2), actuated in displacement by means of '' a jack (24) integral with the chassis (2), and carrying at its anterior end the second positioning area (5), which is made of a rigid transparent material of small thickness, and is provided with two longitudinal grooves (25) . 5. Machine according to any one of claims 1 and 4, characterized in that the clamping device (6) consists of a carriage (26) guided longitudinally relative to the sliding device (4) by means of two axes ( 27) integral with the latter, and movable on said device (4) by means of a jack (28) fixed on the carriage (22) of the device (4), and by a retaining plate (29) movable vertically relative to to the carriage (26) by means of a jack (30) fixed on the carriage (26), this plate (29) being guided on the carriage (26) by means of rods (31) and being advantageously provided with four holes ( 32) arranged in a square or rectangle and aligned in pairs with the axis of the longitudinal grooves (25) of the positioning area (5). 6. Machine according to any one of claims 1, 2 and 5 characterized in that the positioning area (1) is provided with reference lines (I) and (M), perpendicular to each other, including the one (1) advantageously corresponds to the joint plane between the flaps (8), and the others of which (M) are aligned with the axes of the grooves longitudinal. 7. Machine according to claim 1, characterized in that the stacking plate (7) is vertically movable by means of a double-acting cylinder (33) with pressure balancing device mounted on a carriage (34) , is guided relative to the latter by means of one or more pins (35), and is provided with a removable plate (36) provided with two or three needles (37) whose arrangement corresponds to that of the holes (32) of the plate (29) of the clamping device (6), which is advantageously fixed in a housing (36 ') of the plate (7) by means of magnets (36 ") and centering elements and positioning (36 "'). 8. Machine according to claim 7, characterized in that the carriage (34) for supporting the plate (7) can be moved transversely out of the fixed frame (2) thanks to guide pins (38) integral with the latter and at a jack (39). 9. Machine according to any one of claims 1 to 8, characterized in that it is further provided with a manual control device constituted by two push buttons (40) arranged under the positioning area (1), and an optical device (41) integral with the chassis (2) and analyzing the vertical movement of the mobile chassis (3).

Images