EP1472402B1 - Device enabling a footware item to be removed from a mould - Google Patents

Description

The present invention relates to a universal device for removing an article of footwear from a solid metal or tube or two forms arranged side by side, the articles being socks or pairs of socks with small or very long rods, pantyhose legs or assembled tights, or lady stockings knitted with all kinds of fibers. All these articles being on shapes of different heights with normal inclination of the foot making an angle of about 40 ° with the vertical and having a normal heel.

The treatment of footwear, socks stockings and pantyhose, is done on metal forms, so as to combine different treatments with intake of moisture and heat. Generally, manually threaded articles are, after treatment, automatically removed from the forms by means of a mechanical scrolling device. There are currently two types of lathers on the market used in the textile industry.

The first in US-A-3790047 consists of two rubber-coated pliers, which seize the article at the top of the form and pulls the latter by pulling strongly on it, so as to remove it from the form. This device is currently used on 95% of existing sock forming machines on the market. Then you have to tip the article, which is held at the top by the clamps and hangs vertically from top to bottom, from the vertical position to the horizontal position, by means of a racket animated by a very fast circular movement .

This device does not correctly present the articles, and lacks precision and repeatability. It is totally inefficient for long items, as well as for fine items, such as stockings or lady tights. In addition, the very fast circular movement of the racket deteriorates the pivoting mechanism.

The second type of slider known from US-A-5467905 essentially consists of two mats, which after pinching the article on the shape, rotate to extract it. It has the advantage of being able to quickly scroll very long articles, and a judicious arrangement of the carpet to smoothly move the article from the vertical position to the horizontal position. It is usually used to scroll through large items.

On the other hand, it has the big disadvantage of being able to scroll only articles on shapes having a foot very slightly inclined with respect to the vertical and with a very reduced heel. This is, of course, unnatural since, in use, the articles are threaded onto human feet which themselves have a 90 ° angle to the vertical, which, moreover, is detrimental to the comfort of the user. On the other hand, this lack of inclination does not allow, when packaging articles, to correctly fold the foot of the article on the rod thereof.

These two types of slider are used on forming machines, either specialized in the treatment of socks, or in the treatment of tights with different heights of shape and also very different inclinations of feet.

Neither type can be used on the same machine which, on the other hand, would have the advantage of being able to treat very different items, and of all the scrolling with forms having a normal inclination of the foot.

The object of the present invention is to eliminate all these drawbacks by making it possible to move with the same device, all kinds of footwear, from small short-legged socks, to very large tights, via child tights, socks for men, and stockings for women, and this in all kinds of materials, with a normal inclination of the foot, that is to say to be universal.

The present invention is characterized by the fact that the foot of the article is taken in tweezers by two very short clamping mats arranged vertically and that this assembly is then moved with a translation movement in the same direction as the the axis of the foot of the form, this to extract only the foot of the article, the two gripping mats remaining fixed in rotation. Assisted in this action by a pair of fingers located on either side of the shape, which come in a horizontal rotational movement to grasp the lower part of the article, and are then animated with an upward movement at the same speed that the speed of movement of the set of two netting mats. At the end of the course, the two pinching mats come to rest tangentially to an upper belt located horizontally, while the two fingers of the article rise up simultaneously.

It is characterized by the fact that in a second step the complete extraction of the article is carried out by rotating the various appropriately arranged mats so that the article ends its course on a downhill inclined carpet about 45 °, always assisted in this by the two fingers of the article that accompany it at the same speed as the linear speed of the treadmill so that the article thus parade is not stretched or wrinkled during the last phase of scrolling by the different rugs.

It is also characterized by the possibility of adjusting the height of the recovery mats of the vertical and inclined horizontal article so as to adapt to each item, which allows to obtain a good presentation of it and scroll through shapes of different heights and align the rod of the article with respect to the tip of the form.

It is also characterized by the fact that the scrolling head can be positioned at different heights depending on the size of the shapes, and allow, with the same device to scroll small or large items, with small or very large rods .

One of the features of this invention is to also be able to juxtapose items at the exit of the inclined belt, either in pairs, so as to be packaged later, or by stacks of several items, to be stored waiting for the next operation .

• La figure 1 représente l'ensemble du défileur en vue de côté.
• La figure 2 représente les tapis de pinçage avec le mécanisme de commande.
• La figure 3 est une vue en coupe des tapis de pinçage
• La figure 4 représente la tête de défilage et son mécanisme de déplacement, ainsi que les doigts de remontée, vue de face
• La figure 5 est une vue de dessus des doigts de remontée des articles.
• La figure 6 représente les tapis supérieurs vus de dessus
• La figure 7 représente le tapis de descente des articles en vue de face.
• La figure 8 est une vue de côté du tapis de descente avec les positions extrêmes de réglage, ainsi que le tapis horizontal et le mécanisme de dégagement de la partie inférieure du tapis de descente.
• La figure 9 montre le tapis horizontal vu de face avec le mécanisme de remontée du Lapis de descente.
• La figure 10 est une réalisation différente du tapis supérieur, vu de côté.
• La figure 11 est une vue de dessus de ce tapis.
• La figure 12 en vue de face, la figure 13 en vue de côté et la figure 14 en vue de dessus représentent une forme de réalisation différente du défileur, permettant de positionner la tête de défilage à des différentes hauteurs, pour défiler des articles sur des formes n'ayant pas la même hauteur.

The explanations and figures given below, by way of example, make it possible to understand how the invention can be implemented.

• Figure 1 shows the assembly of the shifter in side view.
• Figure 2 shows the clamping mats with the control mechanism.
• FIG. 3 is a sectional view of the gripping mats
• Figure 4 shows the scrolling head and its movement mechanism, as well as the rising fingers, front view
• Figure 5 is a top view of the rising fingers of the articles.
• Figure 6 shows the upper mats seen from above
• Figure 7 shows the carpet descent articles in front view.
• Figure 8 is a side view of the downhill belt with the extreme positions of adjustment, as well as the horizontal belt and the release mechanism of the lower part of the lowering belt.
• Figure 9 shows the horizontal carpet seen from the front with the descent Lapis lift mechanism.
• Figure 10 is a different embodiment of the upper belt, seen from the side.
• Figure 11 is a top view of this carpet.
• Figure 12 in front view, Figure 13 in side view and Figure 14 in top view show a different embodiment of the shifter, for positioning the scroll head at different heights, to scroll articles on shapes not having the same height.

As shown in FIGS. 1, 2 and 3, plate 1/6, the universal slider consists, among other things, of two gripping mats (1) and (2) entrained by the two motor rollers (3). and (4), themselves journalled in the support (5), itself integral with the slide (6), at the end of the drive rollers are keyed two gears (7), which allow the two rollers to turn in the contrary.

On one of the two axes is integrally fixed a toothed pulley (8), itself driven by a motor (9) by means of a toothed belt (10) and a small toothed pulley (11), fixed on the axis of the motor (9). The two gripping mats (1) and (2) are stretched by means of two idle rollers (12) and (13) which rotate respectively on the axes (14) and (15).

The structure of each carpet consists, for the nip (1), the left arm (16), the axis (14) and the right arm (17), the assembly pivots about the motor axis of the motor roller (3) by means of two bearings (18) and (19).

The structure of the gripping mat (2) is similarly constituted.

The control of the pivoting of the two gripping mats (1) and (2) is ensured by the jack (20) which actuates the two levers (21) and (22) via the two links (23) and (24), fixed on the piece (25), itself secured to the axis of the jack (20).

The symmetrical movement of the two belts relative to the vertical axis is ensured by the roller (26), which slides in the groove (27) arranged vertically.

The set of clamping mats (1) and (2) of the drive mechanism, as well as the clamping device, described above, is fixed on a slide (6), Figure 4 (plate 2/6).

The slider (6) moves along an axis parallel to the axis A - A 'of the foot of the form (28), with an angle of about 40 ° to the vertical. It is guided in its movement by three bearings (29) which slide along the two shafts (30) and (31).

The displacement in translation of the whole assembly is ensured by a mechanism constituted by a notched belt (32), an idle pulley (33), and a drive pulley (34), keyed on the output shaft of a geared motor (35), the assembly being fixed on a frame (not shown) via the supports (36) and (37).

The upper part of the universal deflector is constituted by an upper belt (38) (FIGS. 1 and 6, respectively plates 1/6 and 3/6) driven by a driving roller (39), the latter rotating at one end in a bearing (40), integral with the frame (41), and fixed at the other end in a geared motor (42), integral with the frame (41).

The tension of the upper belt (38) is provided by an idler roller (43) journalled about an axis (44), itself fixed to the framework (41).

All of this frame is adjustable in height by means of the screw (117) and the flywheel (118), immobilized axially by a bearing, integral with the frame (not shown).

The guidance in vertical displacement of the framework (41) is provided by the two slides (45) and (46) and the axes (47) and (46) integral with the frame (not shown).

The lower part of the shifter, as shown in FIGS. 1 and 5 (boards 1/6 and 2/6 respectively) consists of a plate (49), guided by the bearings (50) and (51), which moves vertically on the axes (52) and (53), fixed on the frame (not shown), by means of a toothed belt (54), fixed on the plate (49), the latter being driven, at its lower part, by a pulley (55), itself keyed on a geared motor (56) integral with the frame (not shown), the upper part of the belt being returned by an idler pulley (57), itself fixed on the frame (not shown)

On the plate (49) are fixed two raising fingers (58) and (59). Only the raising finger (58) will be the subject of a detailed description, the raising finger (59) being strictly identical. The (58) is equipped, at its end, with a part of a finger rubber (60). It is articulated around an axis (61), itself fixed on the plate by two supports (62).

The raising finger, which can move 90 ° in the horizontal plane, is actuated by a jack (63), articulated between the end of the raising finger (58) and a support (64), integral with the plate ( 49).

The drag roller (66) (figure 1 - plate 1/6 - and figure 7 - plate 3/6) inclined at 45 ° to the vertical, is driven in its upper part by a motor roller (67), whose upper axis (68), integral with the latter, is articulated on the frame (41) by means of two bearings (69) and (70) (Figure 7). At its lower part, the descending belt (66) is stretched by means of a small lower roller (71), journalled in the two bearings (72) and (73), integral with the framework (74), which connects the motor roller (67) and the lower roller (17).

The driving roller (67), which itself drives the lowering belt (66), is provided by means of a pinion (75), keyed on the upper shaft (68) of the driving roller (61), the pinion (75) is connected to the pinion (78) by a chain (76), the pinion (78) being integral with the gear (79), both journalling on an idle axis (77), the gear (79) ) meshes with the gear (80) keyed to the axis of the drive roller (39), which allows the motor roller (67) to rotate in the opposite direction of the drive roller (39).

Both ends of the small lower roller (71) are embedded in two rails (81), arranged horizontally. These two slides can move vertically, parallel to the horizontal belt (82), by means of a parallelogram (84), actuated by a mechanism (85), fixed at one end to the frame (86), Figure 6, plate 4/6

The vertical displacement of the two slides (81) in another embodiment can be ensured by means of a crank link system (116) for adjusting the height of the descent belt (66) according to the number of articles detected in height by means of a photocell (115) (Figure 1).

A horizontal belt (82) (FIG. 8, plate 4/6) horizontally under the lowering belt (66) is stretched between a motor roller (87) driven by a geared motor (88) and an idler roller tensioner (89), the assembly being attached to a frame (86).

In another embodiment, the upper part of the universal deflector, shown in FIGS. 10 and 11 (plate 5/6), consists of two sidewalls (90) and (91), a conveyor belt (92), driven by a drive roller (93) which at one end rotates in a bearing (94) and at the other end is driven by a geared motor (95) fixed to the sidewall (91). In addition, the conveyor belt (92) is tensioned between two idle rollers (96) and (97). A second conveyor belt (98) is superimposed on the first and wraps around the idle rollers (99), (100) and (101), the two sidewalls (90) and (91) are connected to a framework, as described in Figure (6), to adjust it in height.

Another embodiment is shown in Figures 12, 13, 14 (Plate 6/6).

The slider (6) is shown in FIG. 4, the clamping mats (1) and (2), the pivoting control in FIG. 2, and the movement mechanism of the slider FIG. 4, represented on the boards 1/6, 2/6 will be called in the description which follows: conveyor belt, previously described in detail.

The entire conveyor belt can occupy several positions, and particularly two different positions, (H1) and (H2), as shown in Figure 12 (plate 6/6).

For this, the assembly can slide by means of the bearings (102) and (103), along the columns (109), arranged vertically, the latter being secured to a frame (104). Holding in position (H1) or (H2) is provided by a cylinder (105) which is controlled either manually or automatically.

The upper part of the slider described above and shown on plate 6/6 FIG. 13 can be adjusted in position with respect to the entire slider conveyor by means of a flywheel (106) which, when rotating, actuates the screw ( 107) threaded on the right at one of its ends, the other being threaded on the left, which has the effect of bringing the bearing (103) closer to or away from the upper slide (108) guided by the bearing (111). The upper portion of the deflector can move vertically by means of the bearings (102) on the columns (109).

The universal lifter described above operates as follows:

When a shape (28), or a pair of shapes, located side by side, lined with one or two articles, comes to be under the shifter, the two netting mats (1) and (2) descend according to the axis A - A ', guided by the bearings (29) and the shafts (30) and (31). In position "P1" (FIG. 4), the two gripping mats (1) and (2) pinch the foot of the article under the action of the jack (20), the piece (25), the two links ( 23) and (24) which act on the levers (21) and (22) by manipulating them.

They are then animated upwardly in the direction of the axis A - A ', driven for this by the geared motor (35) and all the device described above and come at the end of course tangent the upper belt (38). ).

Simultaneously, the rising fingers (58) and (59) come into contact with the lower part (65) of the article which is on the form (28) under the action of the jack (63).

They are then moved up and down, at the same linear speed as the pinching mats (1) and (2), thanks to the geared motor (56). At the end of the course, the two gripping mats (1) and (2), positioned tangentially to the upper belt (38), thanks to the sensor (112). At the same time, the ascent fingers (58) and (59) are stopped in their movement.

These two actions make it possible to leave the foot of the article of the form, without shooting, thanks to the action of the two fingers of rise (58) and (59). As a result, the foot of the article is, without being deformed, in position P2.

The height adjustment of the upper belt (38), which concretizes the invention: its framework (41), on which is fixed the sensor (112), allows, as shown in Figure 4 (plate 2/6), by the stopping the upward stroke of the clamping mats (1) and (2), to adjust the alignment of the rod of the article being scrolled, in the extension of the foot of the form.

The next step is to simultaneously put the clamping mats (1), (2), the upper belt (38) and the descending belt (66) in rotation by means of the various motors (9) and motor-reducers (12). and to resume the ascending movement of the two raising fingers (58) and (59).

To complete the scrolling of the article, without wrinkles and without tension, so as to bring it in the appropriate position on the descent belt (66), stopping in position P4.

The horizontal belt (82) advances, with each rotation of the lowering belt (66), by means of the geared motor (88), which allows to deposit an article (113) figure 1 on the package of articles (114) , which moves at the same speed.

After each item is dropped onto the article package (114), the horizontal mat (82) advances in the other direction, allowing the item package to return to position P5. Before the return of the pack of articles (114), the end of the descent belt (66) is disengaged upwardly by means of the mechanism 8 and Figure 9 eL of the mechanism (85).

Before each new removal of an article on the package thereof, the descending belt (66), with its slides (81), the parallelogram (84), the mechanism (85) is brought to a suitable height by according to the indication of the photocell (115), allowing a correct removal of a new article on the packet.

The package of articles may be constituted by only two articles, which form a pair and can therefore be directly packaged on the descent carpet (66). FIG. 8 illustrates that: despite the extreme positions occupied by the upper belt (38) during the adjustment R of the latter, because the driving roller (67) is integral with the framework (41) via the bearings (69) and (70), the small lower roller (71) of the lowering belt (66) always remains parallel to the horizontal belt (82) thanks to the two slides (81), articulated by means of the parallelogram (84), positioned in height, either by a mechanism (85), or a crank system (116).

The operation of the conveyor belts (92) and (98) shown in Figures 10 and 11 is identical to the operation of the upper belt (38), the realization is very different and can allow scrolling items that are very difficult to remove d 'a shape.

In Figs. 12, 13, 14 the universal lifter is used to remove articles on shapes of different heights. The starting position of the scrolling head, in H1, is provided by means of a jack (105), which can be controlled manually or automatically to reach the position H2.

These two positions make it possible, with the same apparatus, to scroll very small items or very large items.

Of course, the invention is not limited to the embodiment described above and shown, from which we can provide other embodiments, without departing from the scope of the invention.

The Universal Scrubber is intended to be used on treatment machines for socks of all sizes, with small or large stems, or treatment machines for children's or ladies' tights, leg by leg, or assembled, knitted in yarn very thin or very thick.

Claims (14)

1. Universal removal device allowing to remove a footwear item from a metal mould, solid or tubular, or two moulds arranged side by side, the items being socks or pairs of socks with small or very long uppers, tight legs or assembled tights, or ladies' stockings, knit with any kinds of fibres, all these items being on moulds at different heights, with normal inclination of the foot, forming an angle of about 40° with the vertical plane and having a normal heel, comprising two pinching belts (1) and (2) fitted on a slider (6), two elevation fingers (58) and (59), an upper belt (38) and a succession of belts, descent belt (66) and horizontal belt(82) to collect the article, characterized by the fact that, in order to remove a footwear item from a mould(28), the two pinching belts (1) and (2), after having pinched the article in the upper portion thereof, while remaining rotationally fixed, move, guided by shafts (30) and (31) in the same direction as axis A - A' of the foot of the mould so as to remove the foot, aided for this purpose by two elevation fingers (58) and (59) which are in contact with the lower portion (65) of the article and which elevate it at the same speed as the displacement of the pinching belts (1) and (2) in an ascending motion, along the upper, in order to avoid any tensing or folds occurring on the article, and that subsequently, the complete removal of the article, whatever the length thereof, is achieved by putting in simultaneous rotation the various belts, pinching belts (1), (2), upper belt (38), descent belt (66), still aided for this purpose by the two elevation fingers (58) and (59) moving at the same linear speed as the pinching belts (1) and (2).
2. Universal removal device according to claim 1, wherein the pinching drive of the pinching belts (1) and (2) is achieved by means of a cylinder (20), two levers (21) and (22), connecting rods (23) and (24), and a part (25) vertically centred by a roller (26), moving within a groove (27) which is vertical.
3. Universal removal device according to claims 1 and 2, wherein the two pinching belts (1) and (2) are rotationally driven in the opposite direction by the two driving rolls (3) and (4) rotating within the support (5) integral with slider (6), which have at their end an integral gear (7).
4. Universal removal device according to claims 1 to 3, wherein the left arm (16) and the right arm (17) of the pinching belt (1) swing about the pin of driving roll (3) thanks to bearings (18) and (19).
5. Universal removal device according to claim 1, wherein the two pinching belts (1) and (2) at the end of the ascending travel tangent the upper belt (38), so as to allow the article to naturally pass onto the descent belt (66), and are automatically positioned under the action of sensor (112) which acts on the drive of the gear motor (35) which is integral with the framework of the upper belt (38).
6. Universal removal device according to claim 1, wherein the upper belt (38) is adjustable in height, which allows to stop the pinching belts (1) and (2) tangentially to the upper belt (38) at different positions by means of screw (117) and wheel (118), the framework (41) moving vertically about pins (47) and (48), so as to allow, on final stripping, to align the upper of the article with the foot of the mould.
7. Universal removal device according to claim 1, wherein the upper belt (38), according to a different form of the invention, can be constituted by a first conveyor (92) driven by a driving roll (93) and tensed between two idle rolls (96) and (97), wherein the second conveyor (98) comes into superimposition with the first one and winds around idle rolls (99), (100) and (101).
8. Universal removal device according to claims 1, 6, 7, wherein the descent belt (66) is articulated by means of the upper pin (68) on the framework (41) thanks to bearings (69) and (70), consequently the descent belt (66) integrally moves during the adjustment of the upper belt (38).
9. Universal removal device according to claims 1 to 8, wherein the stripping belt assembly can take up several positions, and particularly two positions, called in the description H1 and H2, for example by means of a cylinder (105) or any other means and with the aid of bearings (102) and (103) moving along posts (109), so as to permit to strip moulds of different heights.
10. Universal removal device according to claims 6, 7, 8, 9, wherein the pin of the small lower roll (71) of the descent belt move during the adjustment of the height of the upper belt (38) or the stripping head in positions H1 and H2, within two rails (81) arranged horizontally.
11. Universal removal device according to claims 6 to 10, wherein the upper belt (38) with its framework (41) can be adjusted in distance in relation to the framework of the stripping belt by means of a screw (107) having a right-hand thread and a left-hand thread and a wheel(106).
12. Universal removal device according to claim 10, wherein the two rails (81), arranged horizontally can move vertically and parallel to the horizontal belt (82) by means of a parallelogram (84) actuated by a mechanism (85).
13. Universal removal device according to claim 10, wherein the parallelogram (84) can be actuated by a crank connecting rod system (116) thus allowing to position the small lower roll (71) of the descent belt (66) in relation to the height of the stack of articles detected by means of photoelectric cell (115).
14. Universal removal device according to claims 8, 10, 12, 13 comprising a horizontal belt (82) driven by a gear motor (88) at each rotation of the descent belt (66), wherein the end of the same can be released towards the top by means of rails (81), wherein the descent belt (66) lays down an article (113) on a pack of articles (114) which moves at the same speed and that the end of the descent belt (66) which is released towards the top allows the horizontal belt (82) by moving in the other direction to place again the pack of articles in position P5 which is thus ready for subsequent laying down.

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