FR2489249A1 - DEVICE FOR LAYERING IN A CASE OR OTHER FILLED FLAT BAGS - Google Patents

Abstract

DEVICE FOR STORING BAGS. DEVICE FOR LAYING FILLED FLAT BAGS INTO A CASE, INCLUDING A CONVEYOR BELT, A DEVICE FOR MOVING THE BAGS AROUND A HORIZONTAL AXIS AND A DEVICE FOR TRANSFERING THE BAGS INTO A CASE, CHARACTERIZED IN THAT IT INCLUDES A DEVICE COUNTING 6, 7, A DEVICE TO ROTATE THE BAGS VERTICALLY 13 TO 16 A DEVICE 19 TO 22 FOR SLIDING THE BAGS ON TOP OF THE OTHER. THE DEVICE FOR MOVING THE BAGS AROUND A HORIZONTAL AXIS IS DESIGNED TO DEPOSIT THEM ON A SLIDE 21, 22 CONTROLLED BY THE COUNTING DEVICE 6, 7.

Description

The present invention relates to a device for placing in layers,

in a box or other, bags

  filled dishes and which includes a conveyor belt, a

  to move the bags around a horizontal axis and a device for transferring the bags into a box. A known device of the above type comprises a forming, filling and closing machine which delivers the bags in a vertical position. So that the bags always reach the conveyor belt with the same side turned

  upwards, a reversing device is

  takes two curved slides, spaced vertically. On the first slide, the bags are turned 900, before being delivered, against the direction of transport, on the second slide, which deposits the bags, in the direction

  transport, on the conveyor belt. To the transport band

  after a transfer head which places the bags

  above a receptacle and which deposits them in this one according to

  a specific program (see DE-OS 25 19 775).

  British Patent 67,854 describes an active referral.

  by a counting device in a known device

  to stack filled flat bags, which includes an enton-

  following a conveyor belt, and to which

  string two guide channels, the counting device and

  the switch being provided at the lower end of the entonnDir.

  A controlled switch, which distributes uniform bags

  between two transport facilities is described in the

publication DE-AS 20 09 610.

  A known installation for rotating flat bodies about an axis extending transversely to the plane of a conveyor belt by means of a protruding projecting element

  above the conveyor belt, in the trajectory of the ob-

  jets is described in US Patent No. 33 32 531.

  We also know a device that allows us to

  bake cookies brought by a transport facility with the same side up and turn these cookies then by

  relation to the position they occupied previously. A provision

  The biscuit extruder has a chimney between two superimposed conveyor belts in which a projecting element extends up to about 1/3 of its width (Swiss patent CH 343 278). The object of the present invention is to provide a device by means of which flat bags coming from a feeding belt and resting on it with their backs facing upwards, can be superimposed in a box with their front side up. The invention achieves this object in that it is furthermore provided with a counting device, a device

  to rotate the bags around a vertical axis and

  positive to slide the bags one above the other,

  in that the device for transporting the bags in the

  is used to simultaneously carry several bags, in that the device for moving the bags around a horizontal axis

  used to turn these around a perpendicular axis

  to the direction of transport and to deposit them on a sled controlled by the counting device, the speed of the conveyor belt and the vertical spacing of the sled of the upper face of said conveyor belt being calculated so as to turn the bags of 180 between the conveyor belt

and the sled.

  Flat bags arriving in a long direction

  are rotated in such a way that they continue their path transversely and are then turned in free fall so that their anterior face is oriented upwards, then are partially superimposed in order to be able to be packaged in a correct position in the box, in which they

  are deposited, several at a time.

  The transport capacity of the device according to the invention

  may be increased by a switch controlled by the

  positive counter, which distributes the bags evenly between two pivoting devices, two reversing devices and two transport devices which deposit them in the box. Other features and advantages of the invention

  will emerge from the description which follows, given

  By way of non-limiting example, with reference to the accompanying drawings in which: FIG. 1 is a plan view of a first embodiment of the invention; FIG. 2 is a side view of this embodiment; FIG. 3 is an elevational view in the direction of the arrow A of Figure 1; FIG. 4 is a plan view of a second embodiment of the invention; For clarity we deleted-on different

  figures of the drawing certain elements and, in particular, certain

parts of the chassis.

  To a packaging machine not shown, intended to fill flat bags with bakery products, confectionery or other, follows a conveyor belt 1 which

  moves in the direction of arrow B. At the trans-

  Carrier B follows a distributor band 2 operating in the same direction. These two bands are part of conveyors whose frames 1a and 3 have only been partially represented and comprise, in the usual way, at their ends, return rollers for the return of the strips. The upper strands of the two bands 1 and 2 are located at the same height. Above the distributor strip 2 is mounted a switch 4 comprising

  a valve 5 pivotable about a vertical axis, this aid

  trimming that can be controlled by means of comntag devices

  6 and 7 arranged on both sides.

  At the switch 4 follows an orientation device 8, the rods 9 and 10 form between them an acute angle,

  close to 90, followed by other chopsticks

  it and 12 which extend approximately

  two-thirds of the length of the dispenser strip 2.

  Approximately from counting devices

  6 and 7, and to the vicinity of the end of the distribution strip.

  butrice 2 extend, along the edges thereof, rails

  13 and 14. Immediately before the end of the bank

  of distributor 2 (considering the direction in which the products are transported) is mounted, between the facing sides of the guide rails 13 and 14, respectively, a rail. 15, 16. The guide rails 13 and 14 and the rails and 16 are spaced appropriately along a support bar 17 extending transversely above the dispensing strip 2, the ends of the bar 17 taking support on the chassis 3 by means of vertical pillars 18

  on which it is slidably mounted, which makes it possible

  The guide rails 13 and 14 and the bars 11, 12 or 9, 10 are held by a

  mounting bar, not shown, in the vicinity of the

  4. The counting devices 6, 7 are fixed on another

  mounting bar, not shown.

  Under the end of the dispensing strip 2 which is opposite the supply belt 1, sleds 21, 22 which can be actuated by cylinders 19, 20 which are controlled are provided.

  by the counting devices 6, 7, these sleds being intended

  to receive flat bags from the distributive strip.

  2 and which were rotated by 1800 around their longitudinal axis

dinal.

  To remove the flat bags on the tral-

  21, 22, there are provided transport devices 23, 24 which respectively have a suction cup can be raised and lowered by an actuating cylinder 25. The transport devices 23, 24 can be moved by means of cylindras

  actuating means 27, 28 perpendicular to the direction of movement.

  2 and are mounted for this purpose,

  in a manner not shown sliding on the frame 3.

  The feed strip 1 carries the filled flat bags with their backs facing upwards in the direction of their longitudinal axis. The flat bags transferred from the feed belt 1 to the dispenser belt 2 are deflected by the

Z489249

  oscillating valve 5 of the switch 4 along a determined path on the dispensing strip 2, for example, as shown in Figure 1, to the right (considering the direction of transport). After a number of successive bags, for example, after three bags have been deflected

  towards the right-hand path, the counting device 7

  a signal which has the consequence that the following bags are deflected towards the left trajectory, according to the direction of transport. After a number, for example, three bags were thus diverted to the left trajectory,

  the counting device 6 sends again a signal which pro-

  voque a pivoting of the valve 5 bringing it back into position

shown in Figure 1.

  The bags that arrive on the feed belt 1 are separated by a certain distance and keep this spacing on the dispenser belt 2. It should be noted that the bag which is driven along the right trajectory of the tri-tripling tape 2, when it reaches the angled rail 16, is rotated

    around an axis perpendicular to the dispensing strip 2.

  The same action is produced by the bent rail 15 on a bag

  dragged along the left transport path. To cause this rotation of the bags, the angled rail 15 or 16 must be adjusted to a determined distance from the guide rail 14 or 13. The impact width of the bag depends essentially on the filling product. In the case of a product that is not of a piece,

  as is the case with confectionery, for example, good results

  were obtained with an impact width corresponding to approximately 4/10 of the width of the bag, while for a product

  cornract, united impact width of about 2/10 is satisfactory.

  0 An average value, valid for most bags, corresponds to an impact width representing approximately 1/3 of the width of the bag. The bag which arrives on one or the other of the trajectories is -uid in such a way that it comes to bear against the corresponding guiding rail 13 or 14 and the sliding rail 16 is in such a way that relative to the guide channel 13, 14 that the bag is rotated about a vertical axis with respect to the dispensing band 2 and is then driven on

along his little side.

  It is therefore seen that the bag rotation device comprises the guide rails 13, 14 and the bent rails 15, 16. During their transfer from the dispensing belt 2 on the sledge 21 or 22, the bags are rotated 180. AT

  For this purpose, the speed of translation of the distribution band

  2Z buenter and the spacing between the upper strand of the strip 2, on the one hand, and the sledge 21, 22 on the other hand, so that, when on the dispensing strip 2, the back of the bag is turned towards the high, on the sledge 21 or 22, its anterior face is

  up. The sleds 21, 22 are controlled by the devices

  counting times 6, 7, so that the bags deposited

  on the sleds 21 or 22, overlap approximately halfway.

  When a given number of bags, partially super-

  placed, has accumulated on the sledge 21 or 22, the corresponding transport device 23 or 24 is lowered, takes, with its

  sucker 26 the bags resting on the sled and lifts them up

  gèrement. After that, the sled considered 21 or 22 returns to its starting position. Moreover, the suction cup 26 holding the bags moves laterally to its delivery position and

  lowers to deposit the bags, as expected, in a

  29 or another packaging container. After that, the

  touse 26 returns to its starting position.

  In the meantime, the predetermined number of bags has been superimposed on the other sled 22 or 21, so these

  bags may be removed from the corresponding transport

  by the suction cup 26 and can be deposited in the box

  29. The transport devices 23, 24 work alternately.

  When the box 29 has been filled, it is replaced

by an empty crate.

  The number of bags and / or layers of bags of each box 29 can be changed. It is also possible to adjust it by volonti superposition mode and if necessary, to

  juxtapose the bags by the two transport devices.

  In the second embodiment shown

  in Figure 4, the components corresponding to the first example

  have been designated by the same numerical references, tan-

  say that the changes were indicated by adding the letter

  be at the corresponding reference. We see that in this embodiment, the pivoting valve 5a of the switch 4a has been mounted perpendicularly to angles 15a, 16a which replace the angled rails 15 and 16 of the first embodiment and which have the same width

impact than these.

  In addition, the guide bars 9 to 12 have been replaced

  placed by bars 9a to 12a, the bars 9a and iQa being arranged at right angles to the direction of

  transport B and narrower than the bent rails 15a and 16a.

  At the ends of the guide bars 9a and 10a follow the bars 11a and 12a which extend respectively in the direction of transport. The dispensing strip 2 does not need in the second embodiment according to Figure 4 to be as long as in the first embodiment. The position of the bars of

  Guide 9a to 12a and rails 15a, 16a could be adjustable.

  Of course, the invention is not limited to the embodiments that have just been described and shown. We can make many changes to details without

  go out for that of the scope of the invention.

Claims (5)

REVEN'D I C AT I S S   - Arrangement for placing filled flat bags in layers, in a box or the like, which comprises a conveyor belt, a device for moving the bags around a horizontal axis and a device for transferring the bags into a box, characterized in that there is further provided a counting device (6, 7), a device (13 to 16) for rotating the bags about a vertical axis-and a device (19 to 22) for sliding the bags one above the other,   in that the device for transporting the bags in the   se (29) serves to simultaneously carry several bags, in   that the device for moving the bags around a horizontal axis   zontal is used to turn these around an axis extending   perpendicular to the transport direction (B) and to deposit them on a sled (21, 22) controlled by the counting device, the speed of the conveyor belt and the vertical spacing of the sledge of the upper face of said conveyor belt being calculated to turn the bags 180   between the conveyor belt and the sled.   2 - Device according to claim 1, characterized   rised by a switch (4), controlled by the counting device   ge, which distributes the bags evenly between two pivoting devices (13 to 16), two reversing devices (2,   21, 22) and two transport devices (23, 24) which feel in the same box (29).   3 - Device according to claim 1 or 2,   characterized in that the device (13 to 16) for rotating the bags comprises, above the conveyor belt (2), a projecting element (15, 16) advancing to about half   the width of the bags, in the trajectory of these.   4 - Device, according to any one of the revendica-   1, characterized in that the device (23 to 26)   for transporting the bags in the box (29) comprises a   all that can rise and fall to seize simu] tanémnt   several bags resting on the sled (21, 22).   5 - Device according to claim 4, characterized in that the suction cup (26) is tileable transversely to the   transport direction of the conveyor belt (2).