FR2471843A1 - UNIVERSAL CLEANING TABLE FOR THE ASSEMBLY AND NUTTING OF HANDLING PALLETS - Google Patents

Abstract

THE INVENTION RELATES TO A UNIVERSAL NAILING TABLE. THIS TABLE INCLUDES A RIGID REINFORCEMENT SUPPORTING AT LEAST TWO PARRAL SPRINGS 5 ON WHICH ARE ATTACHED, WITH THE POSSIBILITY OF AXIAL ADJUSTMENT, PARALLEL TRANSVERSAL ELEMENTS 10-10, 11-11, 12-12 AND IN THAT EACH PAIR OF TRANSVERSAL ELEMENTS ARE ATTACHED FIX, WITH THE POSSIBILITY OF AXIAL ADJUSTMENT, A SERIES OF RECEPTION PLATES OF PALLET BLOCKS 17, 18, 19, EQUIPPED WITH POSITIONING AND HOLDING ELEMENTS OF THE BLOCKS, EACH CONTAINING AT LEAST ONE FIXED STOP 21, ADJUSTABLE IN POSITION, AT THE RIGHT ON WHICH A MOBILE STOP 23 IS PROVIDED BY A CYLINDER 33 MOUNTED, WITH POSSIBILITY OF ADJUSTMENT, ON A RECEPTION PLATE. THE INVENTION APPLIES TO THE ASSEMBLY AND NAILING OF HANDLING PALLETS.

Description

2-247 1845

  The present invention relates to a universal nailing table more particularly intended for the assembly and nailing of pallets of different dimensions, to

  from elements of various sections.

  It is known that the pallets usually consist of three soles each consisting of a nailed assembly of a series of blocks, usually three, on a wooden base board. On these blocks are also nailed, on the opposite side to the boards of basetrois sleepers on which are fixed, also by nailing, the tray of the pallet which can consist of a series of parallel wooden latches to

basic boards.

  At present, to realize these pallets in large series at fast rates, machinestransfer are used comprising several successive stations

  each corresponding to a mounting phase of the pallet.

  These transfer machines which involve several transfer members, with possible flipping of the pallet, are relatively complex and therefore of a

  high price; in addition, they require, for their

  the intervention of at least three specialized workers. Consequently, in view of the depreciation of the machinery and the cost of labor, the use of these machines is justified only in the case of large productions, and the cost price of the pallets can not be exceeded.

  not be lowered as much as it would be desirable.

  Moreover, these transfer machines have a serious disadvantage when it is desired to produce pallets of different dimensions, possibly with the aid of elements of different sections. In fact, for each type of pallet that one wishes to make, it is necessary, to adapt the machine to the new dimensions of these pallets, to make delicate and relatively long adjustments which, well

  often can only be done by specialists.

  The purpose of the invention is therefore to eliminate all these

247 1843

  - 2 disadvantages. It proposes for this purpose a nailing table of simple design and relatively low price and whose production capacity per worker required for its operation> is substantially equal to that of a transfer machine, this nailing table can advantageously be s very quickly adapt to all types of

  pallets that one wishes to achieve.

  Such a solution also has a greater flexibility of use because: - it is suitable for smaller productions

  than those necessary to make the acquisition profitable

  sition of a transfer machine, for the same cost price of the pallets; - It therefore allows to adjust the capacity of the production tool, and, consequent investments, on demand, by providing a number of nailing tables corresponding to this request; it allows rapid adaptation to market requirements, thanks to its ability to manufacture pallets of different dimensions, and thanks to the fact that for an investment and production rate comparable to those of a transfer machine, several tables of nail is

  can produce both different types of pallets.

  To achieve these results, the nailing table according to the invention essentially comprises a rigid armature supporting at least two parallel longitudinal members on which can be fixed, with possibility of axial adjustment, a set of parallel transverse elements perpendicular to said longitudinal members. On each consecutive pair of transverse elements are fixed, with the possibility of axial adjustment, a series of pallet block receiving plates, generally three, equipped with positioning and holding elements.

  blocks each having at least one fixed stop

  position, to the right of which is arranged a

  movable stop actuated by a mounted jack, with the possibility of

  Adjustability, on the receiving plate.

247 1843

  The operation of the table to be nailed previously

described is then the following -

  During a preparatory phase, the position of the movable stops is first adjusted to take into account the dimensions of the pallet blocks. The position of the receiving plates is then adjusted to

  count the dimensions of the pallets that one wishes to achieve.

  For this purpose, the pairs of elements

  transverse elements along the longitudinal members and fixed thereto, then the receiving plates are slid on these transverse elements to bring them to the desired position and fixed in this position. Once these adjustments have been made, the blocks are placed on their respective receiving plates, then the cylinders are actuated so as to adjust the position of the blocks at the positions they will occupy within the pallet. The operator then has on these blocks, the sleepers of the pallet, then he fixed for example by means of a nailing gun. All that remains is to fix, also by nailing. the wooden slats

  forming the pallet plate then> after returning

  born the pallet, to nail on the blocks l @ s base planks. According to other features of the invention, to allow riveting of the nails used for fastening the wooden slats forma-nt the tray of the pallet on the aforesaid transverse elements, the invention provides riveting plates, for example made of steel, which extend into the spans formed by the blocks parallel to the aforesaid transverse elements. To allow their adjustment, these riveting plates are slidably mounted on support plates which extend in the spans parallel to the aforesaid

  spars and which are mounted, with the possibility of

  axial setting on the aforesaid sleepers.

  Moreover, to facilitate the extraction of the pallet, the invention also provides a series of cylinders

247 1843

  _4- Vertical ejection, whose rods pass through

  receiving plates at locations intended to receive

see the palette blocks.

  An embodiment of the invention will be described below, by way of non-limiting example, with reference to the accompanying drawings in which: Figure 1 is a schematic top view of a nailing table according to the invention; Figures 2 and 3 respectively represent, in

  vertical, longitudinal (Figure 2) and transverse sections

  dirty (Figure 3), the nailing table shown in Figure 1; Figures 4, 5 and 6 are schematic representations, in plan view and in longitudinal and transverse sections, to highlight the

  blocks receiving plates and the implantation of

  the accessories they contain;

  Figures 7 and 8 show, in longitudinal section,

  dinal and in top view, a support plate equipped with its riveting plates; FIG. 9 represents, in cross-section a

  rectangular section profile, which can be used to

  1 with reference to FIGS. 1, 2 and 3, the table 1 comprises a base formed of four vertical uprights 2, braced by a crosspiece 3, which support at their ends a metal frame formed by lateral profiles. in U 4 on which are fixed, for example by welding, three longitudinal members 5 consisting of profiles of rectangular section 6 such as that shown in FIG.

  9 and whose upper face 7 comprises a longitudinal slot

dinal 8 with re-entrant edges 9.

  These longitudinal members 5 support three pairs of transverse members 10, 10 ', 11, 11', 12, 12 'consisting of

  rectangular profiles 6 of the same nature as those

  5 and which are fixed on the latter by screwing by means of screws passing through the slots 8 and which are screwed on nuts 13 movable _ _ _

  the inside of said longitudinal members 5. To ensure their

  in a position suitable for screwing, these nuts 13 are welded to sections 14, sectional section

  Rectangular mounted sliding inside the lanyards

  5. Furthermore, the contact distance between these sections 14 and the spar 5, during the tightening of the screw is carried out by means of flat bars 15 arranged between the re-entrant lips 9 and the lateral sides 16 of the spars 5. It avoids thus any possibility of deformations of

  re-entrant lips 9 when tightening the screws.

  On each of the pairs 10-10 ', 11-11', 12-12g of

  cross-sections, are fixed, in a

  to that previously described, three blocks receiving plates which can therefore be adjusted in position along the transverse elements. These receiving plates are arranged in three rows of three plates, namely a central row 17P17 ', 17 "and two lateral rows 18L18'-18", 19-19'-19 "inscribed in a square- or a rectangle with dimensions from the palette

that we want to achieve.

  The plates 17, 18 of the two lateral rows

  take each (FIGS. 4, 59, 6) on the one hand, a stop

  fixed bracket 21, the sides of which are

  alternatively parallel to said transverse elements 10 to 12 and said longitudinal members 5, and, secondly, a horizontal jack 22 mounted, with possibility of adjustment in the bisecting plane of said fixed stops 21 and whose rod

  is provided with a pusher 23 also shaped angle.

  The jacks 22 are mounted by means of a support 24 which is screwed onto the plates 18, 19 by means of screws passing through oblong recesses 25 parallel to said bisecting plane. The end plates 17, 177 'of the central row

  each comprise, on the one hand, a parallel flat stop 26

  The above-mentioned transverse elements 10 to 12 are connected to the above-mentioned transverse elements 10 to 12 and, in the meanwhile, to the control plane of the aforesaid abutments 260.

247 1843

  These two plates 17, 17 "furthermore comprise two lateral abutments 28 adjustable in position along an axis parallel to the fixed abutment 26 so as to be able to bring them to an end.

  spacing equal to the width of the blocks.

  The equipment of the central plate 17 'is similar to that of the end plates 17, 17 "with the difference that the flat stop 30 is adjustable in position according to

an axis parallel to the longitudinal members.

  The receiving plates further comprise, at the locations of the blocks, a bore 31 through which the end of the rod (provided with a pusher) passes a

vertical ejection cylinder 33.

  It is clear that the multiple settings described above make it possible to dispose and hold firmly blocks 34 in the position they occupy within

  the palette regardless of their dimensions.

  To facilitate the installation of the crosspieces 35 on these blocks 34 the invention providedfixed on the structure of the table, the left stops and bottom of template 36,

  framing the perimeter of the pallets.

  The nailing of the ties 35 on the blocks 34 is effected

  kills by means of an unrepresented nailing gun, for example pneumatic, the holding of which causes the setting

  pressure of the cylinders 22 and 27 for positioning the blocks.

  As previously mentioned, on these crosspieces 35 are then fixed by nailing the slats or

  boards 37 forming the pallet plate.

  In order to rivet the nails used for this purpose, the invention provides for the use of riveting plates 38 arranged under ties 35, in the gaps between the blocks 34. In a more precise manner and as represented in FIGS. 7 and 8, these riveting plates 38 are slidably mounted on support plates 39, which are fixed by screwing, with the possibility of adjustment along the aforesaid transverse elements 10 to 12,

  thanks to support pieces 40.

  Once the platform of the pallet is put in place and fixed, the operator carries out the ejection of the pallet thanks to

247 1843

  To the ejection cylinders 33 whose actuation can be controlled for example by a pedal. The pallet can then be easily turned over in order to nail on the blocks 34, the opposite side of the plate and perpendicular to the crosspieces 35, the three base plates relating to the three soles of the pallet $

-8247 1843

_8-

Claims (10)

  1.- Universal nailing table especially for the assembly and nailing of handling pallets, characterized in that it comprises a rigid frame supporting at least two parallel longitudinal members on which can be fixed, with the possibility of axial adjustment, a set of parallel transverse elements, perpendicular to said longitudinal members and in that on each consecutive pair of transverse elements is fixed, with possibility of axial adjustment, a series of pallet block receiving plates, generally three, equipped with block positioning and holding elements each comprising at least one fixed stop, adjustable in position, to the right of which is disposed a movable stop actuated by a mounted jack, with the possibility of   adjustment> on the receiving plate.   2. Universal table according to claim 1,   characterized in that, to enable a bank to be   nails for fixing the wooden slats forming the pallet plate on the aforesaid transverse elements, the invention provides riveting plates, for example steel, which extend in the spans formed by the blocks parallel to the said transverse elements. 3.- universal table according to claim 2, characterized in that the riveting plates are slidably mounted on support plates which extend in the spans parallel to said longitudinal members and which are mounted, with the possibility of axial adjustment, on the said sleepers.   4. Universal table according to one of the claims   - Previous, characterized in that it comprises a series of vertical ejector cylinders, whose rods pass through the reception ranges to the locations   intended to receive the pallet blocks.   5. Universal table according to one of the claims   preceding, characterized in that the aforesaid transverse elements and the aforementioned longitudinal members consist of 247 1843 -9   Rectangular sections 6 whose upper surface   7 comprises a longitudinal slot 8 with trants 9.   6. Universal table according to claim 5, characterized in that the aforesaid transverse elements are fixed on the aforementioned longitudinal members by screwing by means of screws passing through the slots 8 and which are screwed on nuts 13 movable inside said longitudinal members 5.   7.- universal table according to claim 6, characterized in that the aforesaid nuts 13 are welded to sections 14, of rectangular section section slidably mounted within the longitudinal members 5, the contact surface between these sections 14 and the spar 5, when tightening the screw, which can be achieved by means of flat irons 15 arranged between the re-entrant lips   9 and the lateral sides 16 of the longitudinal members 5.   8. Universal table according to one of the claims   preceding, characterized in that the aforesaid blocks receiving plates are arranged in three rows of three plates, namely a central row and two lateral rows inscribed in a square or rectangle to the dimensions of the pallet that is desired to achieve and in that the plates of the two lateral rows each comprise, on the one hand, a fixed abutment in the form of an angle whose sides are respectively parallel to said transverse elements and to said longitudinal members 5, and, on the other hand, a horizontal jack mounted , with possibility of adjustment in the bisecting plane of said fixed stops and whose rod is provided with a pusher also in shaped angle.   9. Universal table according to one of the claims   previous ones, characterized in that the receiver plates   at the end of the central row   each on the one hand, a flat fixed abutment parallel to the aforesaid transverse elements and a horizontal cylinder provided with a mounted plunger, with possibility of adjustment, in the plane mediator of the above abutments and ean - 10 -   these two plates further comprise two lateral abutments adjustable in position along an axis parallel to the fixed abutment so as to be able to bring them to a distance equal to the width of the blocks, the equipment of the central plate being similar to that end plates with the difference that the flat stop is adjustable in position along an axis parallel to the spars.