FR2526772A1 - DEVICE FOR VERTICAL STACKING OF WORKPIECES HAVING A WALL EDGE - Google Patents

Abstract

DEVICE FOR STACKING WORKPIECES IN A VERTICAL POSITION AND INCLUDING AT LEAST ONE HUR EDGE, SO THAT THE HEM OF A PART DOES NOT TOUCH THE HEM OF AN ADJACENT PART. ON A HOLLOW BASE 1 IS SUPPORTED IN A REMOVABLE WAY A CRADLE COMPOSED OF A HORIZONTAL REINFORCEMENT 12 OF A FIRST ORGAN 11 IN THE SHAPE OF A REVERSE U FIXED AT ONE END OF THE FRAME, AND OF A SECOND ORGAN 14 IN REVERSE U SHAPE THAT CAN BE FIXED IN SPACE HOLES SHAPED IN FRAME 12; ABOVE THE FIRST U-SHAPED BODY 11 IS A HOPPER 3 FOR THE INTRODUCTION OF THE PARTS 4, WHICH IS CARRIED BY A VERTICALLY ADJUSTABLE SUPPORT 2 AND PRESENTING A CENTRAL NOTCH THROUGH WHICH A PUSH BUTTON 9, 20, WHICH APPLIES THE PARTS, CAN ACT. INTRODUCED INTO THE HOPPER AGAINST THE SECOND ORGAN 14; A CAM 30 MECHANISM AND RATCHET AND A PHOTO-ELECTRIC CELL 23 ACTUATE THE ASSEMBLY. APPLICATIONS ESPECIALLY IN THE CLOTHING INDUSTRY.

Description

The present invention relates to a device for

  stack fabric, plastic or similar parts

  re, having at least one hemmed edge, such as pockets of clothing, and, more particularly, to a device in which the stacked parts are arranged vertically.

  In stacking devices according to the prior art

  equipment, such as pockets or similar

  are stacked horizontally on each other

  in such a way that the hemmed edges are vertically aligned

  With respect to each other, the differences in thickness between the hemmed and non-hemmed edges are such that it is difficult to maintain the top of the stack in perfect alignment with the underlying parts. , so that it often happens that

  upper pieces fail to stay on the stack.

  Stacks of about twenty pieces formed as above are difficult to transport because of

of their lack of stability.

  A first attempt to remedy this

  the situation was to first form

  small, counting for example twenty pieces, those

  ci being superimposed and placed alternately head to tail.

  This provision, however, was not entirely satisfactory.

  doing because it was difficult to transport the stack

from one place to another.

  The device for stacking workpieces

  vertically or singing according to the present invention

  overcome the disadvantages mentioned above.

  above, which characterize the stacking devices of

  The prior art device according to the present invention

  tion makes it possible to actually place the parts in a

  vertical and contiguous, with respect to

  while the hemmed edge of these parts is arranged vertically in relation to the anterior position, which

  wear the hemmed part of each piece against the thick

  2 - the single room of the immediately adjacent room When forming a stack of this type, the difference in thickness between the hemmed edges and the single or non-hemmed edges

is minimal.

  The vertical stacking device for workpieces according to the present invention comprises an element

  hopper arranged so as to be able to receive successive

  individual parts and to guide them towards a

  lower calf o they are taken from this hopper element, then pushed through a first U-shaped member inverted by a horizontally driven stacking arm This stacking arm urges the piece so that it comes into contact with a vertically arranged support and that is

  continually solicited in turn towards the first or-

  U-shaped gutter A delivery member is provided in the lower part of the hopper and can come into contact with each piece when it is lowered to the bottom of the hopper.

  position where it can be moved by the stacking arm.

  This placing member is vertically displaced with each piece and ensures the placement of the hemmed edges of the pieces above and in correct alignment with respect to the previously received piece. The first U-shaped member is attached to a piece. base horizontal frame from one end of which said U-shaped member is vertically raised A second U-shaped member is carried by the vertically oriented support members and, after a number of pieces have been has been stacked between the first U-shaped member and the vertically disposed support member, the second U-shaped member is manually actuated so that its lower end becomes integral with the base horizontal frame Stacked parts vertically are then placed between the two U-shaped members which, in combination with

  the basic horizontal frame, form a kind of ber-

  This cradle makes it easy to

  3 - removal of the stacked parts relative to the stacking device, as well as their transfer from one place to another.

  Another general object of the invention consists in pre-

  see a device to effectively stack several

  workpieces upright and side-by-side.

  Furthermore, the object of the invention is to provide a device for vertically stacking a plurality of workpieces comprising a hemmed side, in which the hemmed edges of the parts are offset or displaced so as not to come into contact with the hemmed edge of the workpiece. the

immediately adjacent room.

  Another characteristic purpose of the invention

  to provide a device for vertically stacking

  tical of several work pieces within the confines of a crib structure that can be removed from the stacking device to facilitate transfer

  a stack of parts to different places or positions.

  These different purposes of the invention, as well as

  very much, will emerge more clearly during the

  description which follows and refer to the attached drawing, on

  FIG. 1 shows in perspective a stacking device according to the invention. FIG. 1a is a perspective view of a single work piece in order to show the hemmed edge. FIG. 1b is another perspective view.

  showing how to stack several pieces of work

vail;

  FIG. 2 is an elevational view of the device

  FIG. 3 is an end view of the stacking device, this view being taken looking in the direction of the arrow A of FIG. Figure 4 shows further details of the portion of the device that provides stacking of the parts arranged as shown in Figure lb; and FIG. 5 is a perspective view of the cradle in which the parts are stacked and which can be removed from the device to facilitate the transfer of the battery of a battery.

place to another.

  As shown in Figure 1, the device for

  the lage is provided with a hollow base 1 on which is mounted a hopper element 2 which comprises an opening 3 with open lips intended to facilitate the introduction of workpieces 4 provided with a single hem along an edge, as shown in Figure 5 This hopper element 2 extends upwardly from the base 1 and is fixed by screws 7 at two spaced apart amounts 6 These are fixed in turn to the base 1 and the element of hopper 2,

  that they support) has a notch 8 across the-

  which a stacking arm 9 actuated in the horizontal direction

  tal can pass during the execution of the required operation.

  A workpiece 4, after having been introduced into the opening 3 open lips of the hopper element 2,

  is guided down to a so-called

  o its lower edge hemmed 5 meets the end

  of two spaced lifting arms 10 which may be

  make vertical movements to place the pieces

  working 4 in different vertical positions succes-

  sive, as shown for example in Figure lb.

  Figures 2 and 3 show, moreover, that a first

  first inverted U-shaped member 11 is located near

  immediate effect of the notch 8 provided for in the tres-

  2, this inverted U-shaped member 11 being attached by its lower end to one end of an armature

horizontal 12.

  At a certain horizontal distance from the hopper element 2 there is provided a vertical support 13 which carries a second inverted U-shaped member 14. This vertical support 13 is attached to two spaced vertical uprights 15 which are secured to their respective uprights. round of flexible ribbons 16

  which, thanks to the return pulleys 17, can be

  roll around a drum 18 of the self-winding type

  the aim of which is to solicit contin-

  naked vertical support member 13 in the direction

  horizontally and in the direction of the stacking arm 9

  lower trenches of the uprights 15 are mounted

  on horizontal rods 19 used to guide

  the uprights 15 in the direction of the stacking arm towards-

  which they are solicited The stacking arm 9 is attached to a post 20 which is in turn fixed to a rod 21

  of a piston sliding in the cylinder of a pneumatic cylinder

  22, so that the reciprocating movements of the

  rod 21 are transmitted to the stacking arm 9.

  This stacking arm 9 serves to push the piece 4 which

  rests on the lift arms 10 through the first or-

  Inverted J shape 11 where it is placed between this member 11 and the vertical support 13 A control signal of the actuation of the stacking arm 9 is triggered by

  occultation or darkening of a photocell

  23 (Figure 2), which occurs when a light beam emitted by a source 24 (Figure 3) is obscured by the presence of a part 4 in the lower part of

  the hopper element 2 The stacking arm 9 is guided

  its horizontal movement by the lower portion of the upright 20 slidably mounted on two spaced apart guide rods 25 (Figures 2 and 3) The lower end of this upright 20 is fixed to a rod 26 which carries a pawl 27 intended to cooperate with a ratchet wheel 28 integral with a shaft 29 The latter also carries a retaining cam 30 (Figure 4) which is integral and which has the same number of notches that there are teeth on the ratchet 28

  notches formed on the retaining cam 30 may receive

  6 - see a detent roller 31 after each advance of a tooth of the ratchet wheel, this roller being carried by an arm

  32 subject to the solicitation of a spring and mounted pivotally

both on the base of the device.

  This shaft 29 additionally carries a cam

  snap or positioning 33 which turns not-to-

  not, each step equivalent to the advance of a notch of the ratchet 28, produced by the ratchet 27 The step-by-step advance of the

  positioning cam 33 ensures the movement of a pallet

  fear of position (not shown) attached to a

  smoothing 34 on which is mounted in rotation a roller 35 adapted to support a rod 36 As shown in FIG.

  2, this rod 36 has an end mounted in a bearing

  signed at 37, while its opposite end is housed in another bearing carried by a support 38 suspended from a stirrup 39 If we refer to Figure 3, we see that this stirrup 39 can slide vertically on spaced parallel rods and vertical 40 fixed under the tray

top of base 1.

  The lifting arms 10 are fixed to the stirrup 39 and rise therefrom; in addition, they are subject to vertical displacements.

  ratchet 28 has five teeth, we obtain five

  successive tics of the lifting arms 10 at each turn

  of the tree 29, which ensures the implementation of

  place of five successive pieces of work 4 which

  individually at the hopper element 2 At the beginning of the stacking operation, when the vertical support 13 and the second U-shaped member 14 are brought closer to the first one.

  U-shaped organ, a piece 4, if it has been introduced

  in the hopper element 2, is guided downwards

  until it reaches a position where its edge

  If the workpiece reaches this low position, it occurs when the workpiece reaches this lower position.

  occultation of the photocell, which de-

  -7- triggers the transmission of a signal to the pneumatic cylinder 22 to ensure the movement of the stacking arm 9 to the part 4 Thus, the stacking arm 9 pushes the piece 4

  through the notch 8 and the first U-shaped organ 11

  only at a position which applies it against the vertical support 13 which elastically yields under the thrust of the stacking arm to a sufficient extent so that the entire surface of the part 4 bears against the vertical member

support 13.

  Immediately after pushing the piece 4 to the position indicated above, the lifting arm 9 is returned to its initial position by the rod 21 and the support member

  13 places the workpiece 4 in contact with the first

  A further piece 4 is then lowered into the hopper member 2 until it encounters the lifting arms 10 which are then deformed. again subjected to a vertical displacement of a notch, as it had been initiated by the movement of the rod 26 This rod 26, carrying the pawl 27 and the various components described above

  associated with it, controls the upward movements

  In the device according to the present invention, these movements are repeated five times so as to stack five pieces 4 as shown in FIG. 1b. As shown in FIG. workpieces 4 are arranged in groups of five, the lower edges hemmed of each group being vertically spaced one above the other to a corresponding height each time

  the width of a hem, allowing the remaining part

  aunt of each piece to come into contact with the party

  of the adjacent room which has only one thickness.

  Stacking the sets of five pieces 4 continues in the manner described above each turn of the shaft 29, which ensures five successive raises of the rod 36 and 8 - lifting arms 10 A term of each cycle of stacking

  of a set of five pieces, the lifting arms 10 are made

  traveled to their lowest position where they are ready to

start a new cycle.

  A pre-established number of work pieces and sets thereof are stacked between the first U-shaped member 11 and the vertical support 13, and held in this position by the tension at which the ribbons 16

  are subjected by the winding spring drum 18.

  As soon as the stacking operation is complete, the se-

  U-shaped member 14 is disengaged from the support member

  vertical port 13 and pushed down to a position

  where its curved ends 41 penetrate into two

  spaced holes 42 provided in the horizontal armature 12.

  A belt 43 pierced with several spaced holes

  along its longitudinal axis is fixed by one end

  at the upper part of the second U-shaped member 14 and its length is sufficient to allow it to be fastened to the first U-shaped member 11. This belt 43 may be anchored to the first U-shaped member 11 by a point 44.

  which is an integral part of this organ, at the extreme end

  the latter (see Figures 2 and 5), and can penetrate

  The combination comprising the first and second U-shaped members 11, 14 and the horizontal armature 12 constitutes a kind of cradle for supporting the stacked pieces 4, while

  that the belt 43 not only keeps the coins em-

  crushed inside the cradle but serves as a handle for removing the block parts of the stacking device and

transport from one point to another.

  Before removing the cradle and the stacked parts 4 from the device, the support member 13 is pulled backwards

  until a transverse rule 44 fixed to the

  tants 15 is locked by a hook 45 subjected to the bias of a spring, this hook articulating on the -9-

pedestal 1 (Figure 2).

  Using the sequence described above of

  work pieces in a removable cradle,

  a means of stacking and holding up to five hundred pieces, without difficulty. Although the present invention has been described in

  Referring to a preferred embodiment, it is obvious that

  many modifications and variants can be made without departing from the basic principles of

  invention, as will be clear from all

cialist in art.

-

Claims (9)

  1. Device for stacking in a vertical position   workpieces having at least one hemmed edge,   characterized in that it comprises a) a base (1), b) a hopper element (2) mounted on said base (1)   and rising above it in order to receive   to see and guide these parts separately in their downward movement towards a loading position; c) a vertical support (13) slidably mounted on the base and spaced with respect to said hopper element, and   including means to continually solicit   port to said hopper element; d) horizontally driven stacking means   in order to allow the individual extraction of each   it works from its loading position; and e) means disposed between the hopper member (2)   and the vertical support (13) for receiving and successfully retaining   the work pieces extracted from the said po-   loading unit by said stacking means.   2. Device according to claim 1, characterized   in that the hopper element comprises:   (a) means forming an opening lip opening   (3) to engage the work pieces;   (b) cam-controlled lifting means,   loading, to wear against the hemmed edge of each   that the stake and raise it, notch by notch, in order to em-   the contact between the edges, hemmed in with pieces of   stacked in close proximity next to each other other.   3. Device according to claim 2, characterized   in that said cam-controlled lifting means   are constituted by two spaced lifting arms (10).   4. Device according to claim 1, characterized   in that said vertical support member (13) is he -   at two spaced vertical uprights (15) guided in sliding   two spaced rods (18) arranged horizontally is lying.   5. Device according to claim 4, characterized   in that said biasing means is constituted by two spaced flexible strips (16) connecting a drum (18) constantly biased by a winding spring to said spaced vertical uprights (15).   6. Device according to claim 1, characterized   in that said horizontally driven stacking means   comprises a stacking arm (9) arranged vertically and connected to a rod (21) of a piston housed in a jack pneumatic (22).   7. Device according to claim 6, characterized   in that said pneumatic cylinder (22) is connected to a   photocell (23) to signal the action   said stacking arm (9) when a workpiece   vail (4) reaches the loading position.   8. Device according to claim 1, characterized   in that said receiving and retaining means constitute a cradle which comprises: a) a horizontal armature (12) removably mounted on said base (1); b) a first inverted U-shaped member (11) attached to one end of said horizontal armature (12) and extending upwardly therefrom; and   c) a second inverted U-shaped member (14)   carried by said vertical support member (13) and   selectively attach to said horizontal frame   tale (12) at an adjustable distance from the first U-shaped inverted member (11).   9. Device according to claim 8, characterized   characterized in that said cradle comprises: a) a flexible belt (43) attached at one end to the upper portion of the second U-shaped member (14) 12 - and   (b) a means of anchoring the opposite end of the   said belt to the upper part of the first body in   inverted U-shape (11) and forming a handle for removing to the cradle of the device.