FR2459771A1 - DEVICE FOR GROUPING CONTINUOUS ROWS - Google Patents

Abstract

THE INVENTION ALLOWS TO MECHANICALLY LIMIT THE LENGTH OF THE ROWS, WHILE MAINTAINING THE INTEGRITY OF THE BLANKETS. TO THIS END, THE BLADES 1 ARE INSULATED ON THE CONVEYOR 2, AND ARE FIRST STOPPED BY THE JAWS 7, WHICH LET THEM MOVE IN CONTINUOUS ROWS 4 BEHIND THE STOPS 3 DRAWN BY THE ENDLESS CHAIN 5, MOVING SLOWLY, L 'SWITCH 8 FORWARDING CHAIN 6 AT A HIGHER SPEED AND RELEASING THE JAWS 7 FOR THE FORMATION OF A NEW ROW, WHILE CELLS 6-6A DEFINE THE LENGTH OF THE ROWS. THIS DEVICE IS ESPECIALLY USED FOR STACKING BRICKS.

Description

Device grouping blanks in continuous rows.

  The present invention relates to a device for the f02-

  of continuous rows of blanks, each row having a de-

  completed, possibly variable drafts.

  It is necessary to provide devices grouping blanks to form with them rows when you want to load them.

  automatic mechanisms for placing layers formed by

  continuous production of blanks as described for example in the previous application

  German patent P 2831485.4.24. In this way, piles of brick are

  such that each row of bricks comprises a predetermined number of blanks, while the rows of the next layer comprise another predetermined number of blanks. Since they are usually rough blanks of bricks which are fragile and break easily, they should not be grouped together by pushing them back with sudden force which could damage the bricks.

edges of the blanks.

  The American patent 4029198 discloses the formation of rows of blanks of a predetermined length and the device used for this purpose pushes the bricks that rub on the conveyor mechanism which brings them to a collector grid rising obliquely through this mechanism

  conveyor to grab the bricks that thus form on the collective grid.

  this continuous rows of blanks. A photocell is used to define

  the length of the row. When the cell reacts to the passage of the first

  First blank of a row, a jaw pockets the blank following the row to continue its progression and lowers the collecting grid so that the continuous row of blanks passes on the conveyor mechanism beyond the collector area. After excitation of a second photocell, arranged at the end of the collecting grid, by the first blank of this row, the blanks which have been removed by the jaw are released and can advance again so that they are brought to the collecting grid, remaining - distance from the continuous row already formed, this collecting grid being raised. again at the end of the signal given by the

  second cell so that the training process can begin again.

  The disadvantage of this known device is that it is necessary to overcome a significant resistance in order to be able to repoussSer the blanks on the protective grid under the effect of the friction of the bricks from the oC conveyor mechanism it results in a prolonged sliding of the latter all the blanks, and a relative receding of the blanks when a change in the friction on the grid as a result of unevenness of the blanks causes a change in the resistance. In addition, there is another disadvantage in that the length of the row of blanks is not mechanically limited so that in case of coincidence between the activity of the cell and an additional push on the row, we can not be sure of the precision of the

  determining the length of the row of blanks.

  According to another known device, the blanks are brought into contact with a fixed stop which is released as soon as the desired row length has been cleared, while at the same time the blanks which follow this row are stopped by a jaw. until this row is out of the collector area so as to prevent these subsequent drafts from continuing their advance. This prior device has the disadvantage that

  drafts already collected during the grouping process, remain immo-

  biles, so that the following drafts come into play.

  speed, these blanks collected, and that the brutal shock of these drafts in

  drags damage to the edges of the blanks.

  On the contrary, the invention provides a device for

  determine by a mechanical limitation the length of the row cowhide.

  The invention also relates to the execution of a collecting device such that the blanks continue to move during the grouping process. Thus, the differences in speed between the sketches already collected and those which follow

  are weak and avoids any sudden shock between the blanks.

  The invention still covers a device for collecting

  with a smooth flow of movements and high efficiency,

  rows of blanks of determined lengths, possibly different.

  The above results are obtained by providing stops mounted on a chain advancing at a speed lower than that of the conveyor mechanism blanks, these stops disappearing at the end of the race when the

  row whose length is determined by photocell, is opted.- -

JI Q

  The advantages provided by the invention consist essentially of

  in that the blanks are gathered in contact with a stop moving

  in the same direction as they, with a slower speed of movement

  drafts during the actual process of gathering, resulting in a mechanical limitation of the length of the row., which limitation can be lifted at any time to set the length of the blank row to a different value, the relative speed between the row of blanks rasse.bice

  and the blanks arriving behind this row can be reduced sufficiently

  so that drafts do not come abruptly to contact one of

  the other, and can not be damaged by such contact.

  By way of example, an embodiment of the device according to the invention is shown in the attached drawing, the single figure of which

  is a side view of the device.

  In this figure, the blanks 1 advance, on a mechanism

  conveyor 2 consisting of narrow chains, in contact with abutments 3 ve-

  ing through these main chains 2 and advancing at a lower speed than the latter and in the same direction so that

  the gaps between the drafts close you during the assembly process.

  wiring. The stops 3 are mounted on an auxiliary drive chain 5 thus advancing with these stops. This chain 5 is associated with jaws 7 preventing any further movement of the following blanks, when the desired row length has been reached, as determined by

  photoelectric cells 6-6a.

  The auxiliary chain 5 carrying the stops 3 is brought, at the time of actuation of the jaws 7, at a higher speed which may be equal to or greater than that of the main chains 2. The triggering of the limit switch 8 associated with the deletion of the stops 3 returns the auxiliary chain 5 to its previous lower speed at the same time that it causes the opening of the jaws 7. The limit switch 8 is placed in such a way that the buttes 3 diametrically opposed to abutments 3 which are erased are ready to occupy the position where they come in

  taken with the next row of blanks 4 to assemble.

Claims (1)

CLAIM   Device grouping the blanks entrained by a conveyor mechanism, in continuous rows constituted by a determined number, possibly variable of blanks, under the effect   of a stop located at a determined distance from a jaw intended   when the defective row length is reached, to prevent the following blanks from continuing their movement, this device being characterized in that the stops are mounted on a   chain advancing at a slower speed than that of the trans-   carrier, this row length being determined by cells photoelectric.