EP0200604A2 - Cloth spreading apparatus - Google Patents

Abstract

0 Quilting device for leafy materials. It includes a fixed table (1) on which is slidably mounted a carriage (3) carrying a roller - (10) of fabric mounted in free rotation on a support - (8) and maintained in pressure against at least one elastic band without end (14) of drive mounted on two rollers (15, 15a) arranged in parallel and in a vertical plane, said rollers (15, 15a) being driven in rotation by a motor member - (17) controlled in position at speed, the fabric being unrolled and descending freely vertically to be lying on the quilting table (1).

The present invention relates to a device for quilting.

Description

The present invention relates to a quilting device for leaf-like materials.

The quilting operation consists of superimposing several folds of leaf-like material of a given length on a support generally consisting of a table. For this purpose, a nratelasseur trolley is used.

• -possibilité de matelasser différents types de matière,
• -possibilité de créer des matelas de configurations différentes,
• -pas de création de tension interne dans la matière lors de la dépose,
• -précision de la dépose sur le support,
• -rapidifé,
• -qualité de dépose (par exemple, pas de plis),
• -automatisation complète,
• -asservissement de laize centré sur l'axe médian de support.

The main characteristics of a quilting trolley, to respond to the modernization of the means of production in the garment workshops, must be the following:

• -possibility of padding different types of material,
• -possibility of creating mattresses of different configurations,
• - no creation of internal tension in the material during removal,
• -precision of removal on the support,
• -picked,
• -quantity of removal (for example, no folds),
• - full automation,
• -waving width centered on the median axis of support.

• -impossibilité de traiter des matières extensibles sans la mise en place d'un mécanisme spécial lourd et encombrant,
• -précision de dépose, surtout en bout très aléatoire,
• -automatisation généralement partielle et nécessitant toujours un opérateur à proximité du matelasseur pour contrôler le bon fonctionnement.

The main drawbacks of today's quilting carts are:

• - impossibility of processing extensible materials without the installation of a special heavy and bulky mechanism,
• - precision of removal, especially at the very random end,
• - automation generally partial and always requiring an operator near the quilter to check the correct operation.

To remedy these drawbacks, an improved quilting device is used according to the invention.

According to the present invention, the device comprises a fixed table on which is slidably mounted a carriage carrying a roll of fabric mounted in free rotation on a support and maintained in pressure against at least one elastic band without end of drive mounted on two rollers arranged parallel and in a vertical plane, said rollers being driven in rotation by a motor member controlled in position and speed, the fabric being unrolled and descending freely vertically to be lying on the quilting table.

The device according to the invention has a contact force, between the fabric and the endless elastic bands for driving the fabric roll, which is precisely adjustable and which is independent of the weight of the fabric roll.

The loading of the fabric roll can be fully automated.

The tangential drive of the fabric roll allows very precise control of the unwinding.

Finally, with this device, the fabric falls from its own weight, vertically from the lower roller on which the drive belts are mounted and, therefore, the fabric can be treated directly by the measuring and guiding members.

According to another characteristic of the invention, the trolley is provided with means for controlling the edge of the fabric width which is made up of two optoelectronic cells between which the fabric passes and which move on a slide arranged parallel to the fabric , the displacement of these cells being such that the spacing between them is always centered on a longitudinal axis of the table.

• -défaut d'enroulement : le tissu n'est jamais parfaitement enroulë sur son tube de support,
• -variation de largeur de la laize due au procédé de fabrication du tissu.

This control device acts on two different faults:

• -winding fault: the fabric is never perfectly wound on its support tube,
• -variation of width of the width due to the fabric manufacturing process.

The device according to the invention provides perfect centering of the width on a longitudinal axis of the machine and this minimizes the internal stresses of the fabric.

The device according to the invention allows very precise dosing of the movements of the carriage and the simultaneous unwinding of the fabric; in particular, it is possible to vary the accelerations and speeds as a function of the different fabrics and thus obtain a perfect deposition.

The removal is done without constraint from the start of the quilting, it is no longer necessary to hold the fabric at its end with a clamp as is the case on traditional quilting trolleys.

In general, these pliers are bulky, difficult to adjust and to set up.

• la figure 1 est une vue en élévation d'un mode de réalisation du dispositif de matelassage de matières foliiformes suivant l'invention ;
• la figure 2 est une vue en plan du moyen d'asservissement de lisière du tissu ;
• les figures 3 à 3b sont des schémas montrant le contrôle de la position de la lisière du tissu ;
• les figures 4 à 4d sont des schémas montrant les différentes opérations du matelassage effectuées avec le dispositif suivant l'invention ;
• les figures 5 à 5d sont des schémas montrant la réalisation d'un premier type de matelassage;
• les figures 6 à 6b sont des schémas d'un deuxième type de matelassage ;
• les figures 7 à 7f sont des schémas d'un troisième type de matelassage ; et
• les figures 8 à 8d sont des schémas d'un quatrième type de matelassage.

Other characteristics and advantages of the invention will be better understood on reading the following description of an embodiment and with reference to the accompanying drawings, in which

• Figure 1 is an elevational view of an embodiment of the quilting device for leafy materials according to the invention;
• FIG. 2 is a plan view of the means for controlling the edge of the fabric;
• Figures 3 to 3b are diagrams showing the control of the position of the edge of the fabric;
• Figures 4 to 4d are diagrams showing the different operations of quilting performed with the device according to the invention;
• Figures 5 to 5d are diagrams showing the production of a first type of quilting;
• Figures 6 to 6b are diagrams of a second type of padding;
• Figures 7 to 7f are diagrams of a third type of padding; and
• Figures 8 to 8d are diagrams of a fourth type of quilting.

In Figure 1, there is shown a support member consisting in particular of a fixed table 1, on which is disposed a mattress 2 consisting of several overlapping plies of leaf-like material of a given length, said table 1 being supported by a frame main not shown in the drawing on which is guided in translation via rails a quilting carriage 3. The carriage 3 is driven by a motor 4 controlled in position and speed so as to control very precisely all its movements. The carriage 3 which moves above the fabric mattress 2 is provided at its upper part with a turret 5 which is pivotally mounted on the carriage along a vertical axis by means of a bearing 6. This turret 5 can pivot by relative to the carriage 3 around the axis XX, centered on the point of fall of the fabric, thus making it possible to create all the types of mattress as will be described later.

The turret 5 comprises slides 7 on which are slidably mounted supports 8 in V which receive an axis 9 of a roll of fabric 10, the axis 9 being completely free to rotate on the supports 8 in V.

On the slides 7 is fixed by a yoke 11 the body 12 of a jack whose rod 13 is integral with the supports 8 in V, so as to horizontally move the roll of fabric to bring it into contact with endless elastic bands 14 which drive the tangential rotation of the roller 10.

The endless belts 14 are mounted at regular intervals with each other on two rollers 15, 15a arranged parallel and in a vertical plane, at a fixed position relative to the turret 5. At least one of the rollers 15 is connected by a transmission 16 to a motor 17 fixed on the turret and ensuring the rotational drive of the rollers and the translation of the endless bands 14 which drive the fabric roll 10 when the latter is in contact with said bands under the action of the jack 12. The motor 17 is controlled in position and in speed.

At the upper part of the carriage 3 is mounted a servo means 18 for the edge of the fabric which makes it possible to deposit the width of fabric still centered on a longitudinal axis of the table 1.

To this end, said means consists (FIGS. 1 and 2) of two optoelectronic cells 19, 19a which are fixed on two carriages 20, 20a moving on a slide 21 arranged parallel to the fabric, said carriages carrying nuts 22, 22a which are engaged on a rod 23 threaded on the right and on the left, said rod 23 being rotatably mounted in bearings provided at the ends of the slide and driven by a motor 24.

The displacement of the cells 19, 19a is such that the spacing between them is always centered on a longitudinal axis of the machine.

The cells 19, 19a are arranged in such a way that the tissue 24 passes between them just at the exit of the unwinding system.

The cells act by means of an electronic computer on a motor (not shown) allowing the transverse displacement of the turret 5 by means of the slides 6. Thus, as soon as the cells register a change in width of width, the fabric is moved so as to be brought back in a longitudinal axis of the machine.

At the base of the carriage 3 is mounted a means for removing the fabric 26 which is vertically movable along the double arrow F and actuated by a motor member controlled in position. This means allows during the vertical descent of the fabric to lie it on the quilting table 1.

This means for depositing the fabric 26 comprises a feeler 27 actuated by a jack 28 and which makes it possible to position the means for depositing the fabric 26 at a constant height relative to the upper fold of the mattress 2.

The removal means comprises at its upper part an optoelectronic cell 29 making it possible to very precisely stop the end of the tissue 25 at a given height depending on the position of the probe .27.

At the base of the depositing means 26 are arranged elements 30, 30a for deflecting the path of the fabric 25 and eliminating the folds. These elements are capable of being discarded to allow free passage when the fabric descends between said elements. Two elements 30, 30a are used in order to be able to deposit in both directions.

These elements can consist of banana rollers, rollers with jets of compressed air, etc.

On either side of the removal means are mounted two fabric cutting members 31, 31a constituted in particular by circular knives driven in rotation by motors 32, 32a, each knife, and its motor, being mounted on a slide arranged transversely and parallel to the mattress 2.

Each knife is offset from the drop point of the fabric. It is therefore necessary to advance the carriage 3 beyond the end of the mattress by a value equal to the offset so that the knife is above the end of the mattress 2.

The slide supporting the knife 31, 31 a is capable of moving vertically along the arrow F1, so that by lowering the cutting assembly, it comes to bear on the mattress 2 and the knife cuts the fold of fabric flush with the end of the mattress.

• comme représenté à la figure 4, le rouleau de tissu, avec son axe central 9, (figure 1) est posé sur les supports en V 8, le vérin 12 se trouvant en position rentrée.

The quilting device according to the invention operates as follows:

• as shown in FIG. 4, the fabric roll, with its central axis 9, (FIG. 1) is placed on the V-shaped supports 8, the jack 12 being in the retracted position.

The pressure is reversed in the jack 12 so that the supports 8 slide in the direction of the endless bands 14 to bring the roll of fabric 10 into contact with them. The pressure of the compressed air in the jack is adjusted so as not to obtain a crushing of the fabric or too great an elongation of the endless bands 14.

From this moment, the fabric being in contact with the strips 14 and the rollers 15, 15a, it suffices to power the motor 17 to unwind the fabric. Due to the tangential entrainment of the fabric, one can therefore precisely control the length of unrolled fabric.

The carriage 3 being immobilized in a place such that the drop point of the fabric is located exactly above the start of the mattress 2 (FIG. 4a), the fabric is slowly unwound and it passes through the cells 19, 19a of servo-control edge until it reaches the optoelectronic cell 29.

The elements 30, 30a are in the separated position. We know exactly the distance d between the cell 29 and the upper surface of the mattress which is indicated by the probe 27.

Then, the fabric is lowered by a value corresponding to this distance. The fabric then comes just in contact with the upper corner of the mattress 2 (Figure 4b).

The guide elements 30, 30a are then brought together.

From this position, quilting can be carried out. The carriage 3 moves and simultaneously, in perfect synchronism, the fabric 25 is unwound so as to be deposited on the mattress 2 without constraint (FIG. 4c).

During the movement of the carriage 3 to carry out the quilting, the selvage control means ensures the centering of the fabric on the table.

To this end and at the start of the operation, the optoelectronic cells 19, 19a are moved apart as much as possible (FIG. 2) and then the tissue is lowered between said cells.

The cells 19, 19a are brought together slowly and as soon as one of them meets the tissue, the roll of tissue 10 is moved in the opposite direction - (FIGS. 3a, 3b) to return the tissue to the centering position, shown in Figure 3.

As soon as the two cells 19, 19a are covered (FIG. 3), they are immobilized, the computer compares the covered surfaces and acts on the tissue so as to balance them.

This means allows the width of the width to be measured in real time and this value can be communicated to the central computer and used as a parameter for managing and controlling the operation of the machine.

When a new fold of fabric has been deposited on the mattress 2, one of the cutting assemblies is lowered and comes to bear on the mattress (FIG. 4d). The knife 31 cuts the fold of fabric flush with the end of the mattress.

As soon as the cutting is finished, the fabric is rewound up to the level of the cell 29, the carriage 3 is moved above the other end of the mattress 2 and a new fold is deposited.

In Figures 5 to 5d, there is shown a first type of quilting in which the pattern of the fabric is always oriented at the top of the mattress, the pleats 33 and 33a being arranged as shown in Figure 5a and the unwinding of the fabric s performing as shown in Figure 5.

During a first forward movement of the carriage 3, a first fold 33 is deposited. on the mattress (Figure 5b) while the return after the fold 33 has been cut empty (Figure 5c). Then, the carriage 3 performs a second forward movement during which it deposits a second fold 33a on the fold 33 (FIG. 5d). This displacement after a cut at the end of the mattress is followed by a second vacuum return (FIG. 5c) and so on.

In Figures 6 to 6b, there is shown an accordion quilting in which the patterns of the fabric are arranged opposite one another (Figure 6).

In this case, the carriage 3 makes a first outward journey during which it deposits a fold 34 on the mattress (FIG. 6a). After a cut at the end of the mattress, the carriage carries out a return journey during which it deposits a second ply 34a on the ply 34 (FIG. 6b). The operation is thus repeated after cutting the folds at each end of the mattress.

In FIGS. 7 to 7f, a third type of quilting is shown in which the carriage makes a first outward movement (FIG. 7a) during which a fold 35 is deposited on the mattress. After cutting at the end of the fabric, the carriage 3 returns empty to its starting point (FIG. 7b) where the turret 5 is rotated by 180 ° (FIG. 7c).

The carriage then performs a second forward movement (FIG. 7d) during which it deposits a ply of fabric 36 on the ply 35 and after cutting at the end a second vacuum return (FIG. 7e).

Then, the turret 5 again undergoes a rotation of 180 ° (FIG. 7f).

In Figures 8 to 8d, there is shown a fourth type of padding in which a first ply 36 is deposited on the mattress during a first go (Figure 8a).

After a cut at the end, the turret 5 is rotated (FIG. 8b). During the return movement (FIG. 8c) of the carriage 3, a fold 36a is formed on the fold 36 and then the turret 5 is rotated by 180 ° - (FIG. 8d).

Of course, the description is not limiting and those skilled in the art may make modifications to it without departing from the scope of the invention.

Claims (9)

1. quilting device for leafy materials, characterized in that it comprises a fixed table (1) on which is slidably mounted a carriage (3) carrying a roller (10) of fabric mounted in free rotation on a support (8) and maintained in pressure against at least one endless elastic band (14) of drive mounted on two rollers (15, 15a) arranged in parallel and in a vertical plane, said rollers (15, 15a) being driven in rotation by a motor member ( 17) slaved in position and speed, the fabric being unrolled and descending freely vertically to be lying on the quilting table (1). 2. Device according to claim 1, characterized in that the roll (10) of fabric and its drive means are mounted in a turret (5) pivoting along a vertical axis (X-X1) on the carriage 3, and movable transversely to said carriage. 3. Device according to claim 1, characterized in that the roll (10) of fabric is mounted in free rotation on supports (8) in V mounted to slide horizontally and actuated by a jack (12) capable of keeping the roll in pressure 10 of fabric against at least one endless drive belt (14) arranged on two rollers (15, 15a). 4. Device according to claim 1, characterized in that the carriage (3) is provided with means for controlling the edge of the width (18) of fabric which consists of two optoelectronic cells (19, 19a) between which passes the fabric and which move on a slide (21) arranged parallel to the fabric, the displacement of these cells (19, 19a) being such that the spacing between them is always centered on a longitudinal axis of the table (1). 5. Device according to claim 4, characterized in that the two optoelectronic cells (19, 19a) are integral with the carriages (20, 20a) moving on a slide (21) and carry nuts (22, 22a) which are engaged on a rod - (23) threaded to the left and to the right hampered in rotation by a motor (24). 6. Device according to claims 2 and 4, characterized in that the two optoelectronic cells (19, 19a) act by means of an electronic computer on a motor ensuring the transverse displacement of the turret (5) so that when recording a modification of the width of the width, the fabric is moved so as to be brought back on a longitudinal axis of the table (1). 7. Device according to claim 1, characterized in that the carriage (3) comprises a means for removing the fabric (26) which is movable vertically as a function of the height of the mattress and actuated by a motor member controlled in position, said means deposit comprising a feeler (27) for positioning the depositing means at a constant height relative to the upper fold of the mattress (2), an optoelectronic cell (29) arranged opposite the fabric and making it possible to stop the end of the fabric at a given height. 8. Device according to claims 1 and 7, characterized in that at the base of the fabric removal means (26) are arranged two elements (30, 30a) between which the fabric is unwound, said elements (30, 30a) deflecting the path of the fabric and eliminating wrinkles. 9. Device according to claim 1, characterized in that the carriage (3) comprises on each side of the removal means (26) of the fabric, a cutting member (31, 31a) which is slidably mounted on a slide arranged transversely to the quilting table, said slide being able to move vertically for cutting the fabric, said cutting members (31, 31a) being driven by motor members (32, 32a).

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