FR2486370A1 - DEVICE FOR AUTOMATICALLY POSITIONING CLOTHES OF CLOTHES FOR EXACT COVERING - Google Patents

Abstract

1. A device for placing accurately in position in space a piece of clothing having a defined edge, comprising a horizontal frame (1) containing a transparent and porous carrier-cloth (2) which is mounted to be movable in at least two directions, is coupled to means of movement and is associated with detectors which act through the said cloth (2), characterized in that the frame (1) is movable in a first direction under the action of a first jack (5) which is mounted to be movable relatively to this frame (1) at least partially in the second direction and is associated with a detector (A) of a point on the piece (V) which is laid on the cloth (2), the said frame (1) being movable in the second direction by two jacke (10, 11) spaced apart, of which at least one (10 or 11) is mounted to be movable relatively to this frame at least partially in the first direction, the said jacks being associated respectively with respective detectors (B, C) each of which detects one point on one and the same edge of the piece (V).

Description

The subject of the invention is a device used to carry out the setting

  precise position of individual pieces of clothing before gripping

  in view of their exact superposition on each other.

  We know that clothes are composed of various individual pieces that are assembled and

  sewn. It happens quite often that in some clothes

  two pieces match each other, like a front and a back of a swimsuit for example; they must be seized one by one and placed exactly on one another before sewing them together on at least part of their perimeter. However, we also know that the pieces are cut in large quantities, in one go, and are, after execution of the cut, stacked in large piles. For

  assemble two pieces each of two different batteries

  rents, they must be taken one by one from each pile and

  place one on the other before sewing.

  There is already in the field of clothing making, machines capable of seizing one by one parts on a stack, to transport them, and to drop them at a specific location. But it became apparent that

  stacks of cut pieces are not regular; they tend

  dent to lean instead of being perfectly vertical. Moreover, their placement in a specific place is difficult.

  because of their low consistency and instability.

  It is inevitable, therefore, to give each piece a precise position before being seized by a transfer machine responsible for moving it and able to deposit it then exactly in one place

predetermined.

The main purpose of the invention is

  to bring a simple device, able to give automatic-

  a precise position to a piece of clothing.

  A device according to the invention comprises a horizontal frame supported to be movable in two directions of its plane; this frame contains between its sides a transparent and porous canvas. A first cylinder is coupled between a fixed point and a first side of the frame; a second and a third cylinder are coupled between two fixed points and two points spaced from a second side of the frame. These jacks are mounted by means of articulations or sliding fasteners to allow the frame the desired deflection in translation and pivoting. First detection means is associated with the first jack for detecting a determined point of a piece deposited on the canvas. A second and a third detection means are each associated respectively with the second and third jacks to detect an edge of a piece deposited on the fabric. Preferably these detection means are

  each arranged on the line of action of the jack corresponding to

ing.

  According to an exemplary embodiment of the invention, the detectors are constituted by photocells associated respectively with. light sources, cells and sources being

  on both sides of the transparent fabric.

  In a preferred embodiment of the invention, the frame to which the second and third jack are coupled is supported by a table on which this frame is movable under the effect of these cylinders and the first jack is coupled to this table which relies on

  pebbles authorizing its displacement; an opening is discovered

  in the table corresponding to the area of the transparent fabric where the edge of the room

  detect the second and third detectors.

  To understand the invention

  we will now give a description of two examples of

  realization during which will appear better the features of the invention. Reference is made to the appended drawing in which: - Figure 1 is a schematic top view of a device according to the invention, - Figure 2 is a general perspective view of a preferred embodiment of the device of the invention. 'invention

represented in the exploded state.

  The device illustrated in Figure i comprises a frame 1 which is rectangular and which contains between its four sides a transparent and porous web 2 designed in part only. A first side 3 of the frame 1 is coupled to the piston rod 4 of a jack 5 whose cylinder is articulated at 6 around a fixed point outside the frame 1. A second side 7, which is preferably an adjacent side at the side 3 when the frame 1 is rectangular, is

  coupled to the piston rods 8, 9 of two cylinders 10, 11 spa-

  parallel and whose cylinders are articulated around two fixed points 12, 13 outside the frame 1. It is sufficient that only one of the two fixed points 12, 13 is a point of articulation of the corresponding cylinder. In this

  relating to the connection of the piston rods 4 and 8, 9 res-

  3 and 7, it is preferable that it is also constituted by a joint leaving sufficient freedom to the movements of the frame 1. In practice, the connection mode of the jacks with the frame and with the fixed points does not present of difficulty. It is sufficient that

  frame 1 can be moved unhindered in two ways.

  on the one hand, on the effect of the cylinders 10, 11, on the other hand, under the effect of the cylinder 5. These two directions are preferably orthogonal, but it is understood that this provision is not mandatory. The frame 1 is supported and guided by means not shown which leave it

the desired freedom.

  First designated detection means

  by the general reference A is associated with the first cylinder 5.

  A second and a third detector, B and C, are associated

  respectively to cylinders 10 and 11. These detectors

  are of any suitable type. In the present example

  each of them includes a photoelectric cell placed beneath the transparent web 2 and a source of

  light placed above it.

  The detector A associated with the first jack 5 is arranged to detect a particular point of a piece of clothing placed on the web-2. When the pieces of clothing are a front or a back, the detector A serves to detect the beginning of the rounding of an armhole from one side of this front or this back. With parts of another kind, we could choose another point to detect. What is important is to choose a point whose position on the part is determined in a way that is unlikely to vary. The detectors B and C associated with the jacks 10 and 11 are arranged to detect together an edge of a piece of clothing placed on the canvas 2. They are respectively placed on the line of action of the cylinders

10, 11.

  The preferred embodiment illustrated in FIG. 2 is largely identical to that of FIG. 1. Therefore, the same numerical references will be used to designate the identical pieces or

Similar.

  The rectangular frame 1 containing a transparent and porous cloth 2 rests on a table

  14. The cylinders 10, 11 whose piston rods are

  lMes at side 7 of frame 1 are mounted on table 14! the jack 10 being immobilized thereon by a flange 15 and the cylinder 11 being hinged at 13, the frame 1 is movable

  on table 14 in the sense of remoteness and closeness

  10, 11, the table 14 is shown in the raised state above a frame 15, In fact, it rests on the latter and it can be moved by means of rollers 16 in directions perpendicular to the direction of action of the jacks, 11. The frame 15 is provided on a side 17 parallel to the first side 3 of the frame 1 of a bracket 18 on which is mounted the cylinder 5 whose rod is coupled to the edge 19 of the table 14 which is parallel to side 3 of frame 1,

  The frame 15 comprises a longitudinal element

  dinal 20 which serves for fixing, with a possibility of adjustment in position, transverse supports 21, 22, 23 which

  respectively below the web 2

  the photoelectric cylinders-A, B, C. An opening 24 is provided in the table 14 in the area of the canvas 2 o

  the detectors A, B, C have to play their role.

  In the example described here, the fabric 2 is composed of 49 threads per centimeter, made of polyester, having a diameter of 7/100 mm, thus giving 43% of surface area.

  opened. It is necessary for this painting to be transparent

  so that the detectors can detect through it the presence of a piece of clothing. It is also necessary that this painting be porous; for this reason, an open area of at least 30% is preferable. Indeed, the automatic transfer of the pieces of clothing is done

  accurately with a vacuum type machine.

  A proper grip can only be achieved when air is drawn through the workpiece and through the

  surface on which it rests.

  The device of the invention operates

as follows.

  A vacuum transfer machine deposits a piece of clothing V (FIG. 1) on the fabric 2 by placing it in an incorrectly centered position in which it intercepts the light rays of the detectors B and C and does not intercept that of the detector A. . This position

  poorly centered is partially shown in dotted lines.

  It is enough that the installation location of the piece V on the fabric 2 is offset by about 1.5 cm so that all the successive pieces are poorly centered despite the variation of their initial position at the moment of their grip by the transfer machine. Immediately after installation, the cylinders 10 and 11 move the frame 1 until the edge of the part V is detected by the detectors B and C, which takes place as soon as the spokes are no longer intercepted. The cylinders 10, 11 are stopped and the actuator is actuated until the detector A is influenced by the point it must detect. The frame 1 is then completely locked to its position by means not shown and a transfer means to the deviation seizes the piece V.

  The cylinders 5, 10, 11 have a debate-

  maximum of 5 cm; the positioning of the V parts is done with a tolerance of + 0.5 mm. This accuracy is sufficient to achieve a satisfactory recovery of a front and a back, taken successively on the fabric 2 after their positioning in the marked position, and deposited on a

neighboring surface.

  The number of cylinders is not nec-

  that which was mentioned during the course of the

  scription; depending on the configuration of the parts, it may be necessary to adopt a number and arrangement of the cylinders

  and different detectors. It is understood that the invention

  In this respect, all the variations which can be made to the examples described above are covered. The position adjustment of the detectors makes it possible to adapt the device to all the configurations of the parts to be set up.

precise position.

  The stroke of 5 cm cylinders men-

  born above is not a critical value. The device of the invention acts with the same absolute precision with

  smaller or larger races. An important movement

  the frame is necessary when the parts that are

  on the frame have initial positions with wide dispersion. It is necessary that the mode of coupling of the jacks to the frame leaves to this one the desired freedom; he

  sometimes the use of joints or sliding fasteners

  santes is no longer sufficient to provide this freedom. In this

  In this case, the provision illustrated by the -

  Figure 2 according to which the frame rests on a movable table.

Z4863270

Claims (5)

  1) Device for setting a specific position of individual pieces of   clothing with a view to their grip and their super-   characterized in that it comprises a horizontal frame (1) supported with a displacement position in at least two directions, containing between its   sides a transparent and porous cloth (2), a proof of   first cylinder (5) hitched on the one hand to a first side (3)   frame (1) and on the other hand to a fixed point (6) outside   within this frame, at least one second and one third cylinder (10, 11) spaced apart and each coupled to a second side (7) of the frame (1) and, on the other hand, to a second fixed point outside this frame, each of these cylinders being associated with a detector (A, B, C) able to detect a given point of a piece of clothing placed on the fabric (2) as a result of displacements   caused by the corresponding jack. 2) Device according to the claim   1 characterized in that the frame (1) is supported by a table (L4) on which it is movable under the effect of at least one jack and this table (14) is   itself supported by a frame (15) in an authorized manner   its movement under the effect of a jack at least. 3) Device according to the claims   1 and 2, characterized in that the detections   (A, B, C) are of the type comprising-photocells arranged under the fabric (2) and light sources disposed above the fabric (2), an opening M4) being provided through the table ( 14) in the detection zone of the detectors (A, B, C), 4) Device according to the claim   characterized in that the frame (1) is rectangular   and the cylinders are arranged to act in two orthogonal directions.   ) Device according to claim (1) characterized in that the cylinders are coupled * 2486370   between the fixed points and the frame by means known per se leaving the frame free to displacement necessary.   6) Device according to claim 1 characterized in that the fabric (2) is woven son   and has an open area of at least 30%.