FI85574B - STABELBAR BRICKA. OCH UTRUSTNING. - Google Patents

Description

85574 STACKABLE TRAY Background of the Invention

It is already known to open cardboard boxes, called "trays or carriers", in which, in order to be stacked to a certain severity, each has two triangular support edges arranged vertically at their corners, formed by wrapping strips extended from the edges of their longer sides or the edges of their longer sides. When such trays are placed when forming stacks of coatings, they must withstand considerable loads and their side walls, especially the longest sides and bottom, easily lose their shape due to the weight of the packaged goods and consequently the weight that one tray places on the others. The present invention provides a new cardboard tray which effectively solves such an important problem and, moreover, eliminates the known erroneous strip arrangements between boxes used in hitherto known trays, since these strips protruding from the upper edge of the leading edges are generally weak and unable to prevent lateral pressure. fold easily without achieving the desired fit. In current trays, stacks keep a relatively •. stable the weight of just one tray over the other, and they do not have the effective means of stacking trays mah-‘Γ *. to avoid possible lateral displacement.

Description of the invention

It is an object of the invention to provide a new stackable tray provided with a plurality of support and adapter blocks between the trays: improved in design, assembly and fit. made of a simple prefabricated sheet, preferably but not exclusively. of its own corrugated cardboard.

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The main object of the invention is to provide a considerably improved tray which, as a result of its special design and arrangements, can be fitted or formed completely exclusively by mechanical means.

Another object of the invention is to provide a tray provided with a second partition on its two opposite sides, either at the front edges or on the longer sides. This second partition forms a double wall, and both partitions are located at the same height in the middle block of said sides and at a higher height at their extremes. It is a further object of the invention to form each of the two notches in the lower edge of the corners which form the layers to match the profile formed by the upper edge of the corner of each box so that when the boxes are placed on the coverings they fit on top of each other. The boxes placed on the covers rest on two supports placed on a different level, the box immediately below having a space at its top and corners to fit between the two layers of the tray placed on the lower level.

• · • ·

The above-mentioned special groove is thus improved in that "- ** - one box is" connected "to another, but its penetration is limited to a precise boundary, since each box has a small transverse partition at its corners, which - the partitions are used as supports on which the base plate of the box placed next to the lower level rests, this arrangement allows the stacks to be formed with greater stability, making it practically impossible for one tray to move laterally with respect to the other.

• · · • · • · ***. Other objects relating to the advantages and expediency of the invention are set forth below.

· «· • ·»: ***: The invention is characterized by what is set forth in the characterizing part of claim 1 of claim 3 85574. At the extremes of the improved stackable tray and along the lower edge of the longer sides and in the same zone of the leading edges, two cuts or special cuts have been made in each, forming each of the two adapter layers in the lower outer part of the corners.

Further, the front edges or longer sides of the tray shown have two partitions forming a double wall, the inner of which may be as high or lower as the outer wall, with a wide support for a second box placed on top at the top between each, so that each double partition of the tray is placed coatings linearly with a compatible double partition wall of the second tray, which tray is at a lower level.

Another feature of the tray shown relates to the means used to unload the stacks, separating each tray immediately below it to which it is substantially "attached" at its corners, an arrangement consisting of a wide cut made in the center of the upper edge of the sides having a double wall. The fingers of the hand are inserted into this cut comfortably, separating the trays. sex apart.

Another feature of the invention is that the small partitions forming double walls on the two opposite sides of the tray, either on the longest sides or at the front edges, can be smaller in height than the sides on which they rest, thus providing considerable material savings. onment.

• · »» · · • «·

Another feature of the newly presented tray is that the small-partitions that form the double walls of the tray. on the side to which they are attached are smaller in height::: than the latter and, moreover, the ends of their ends are placed on the cover and form a support on the upper edge of the nearest side 4 85574, thus increasing the mechanical resistance of the supports formed in the tray, making the tray very suitable for supporting loads that load it when forming stacks.

A more complete understanding of the disclosed improved tray will be obtained with reference to the following description, taken in conjunction with the accompanying drawings, in which complete and preferred details of the invention are shown somewhat schematically and without limitation and by way of example only, with reference to possible practical situations.

In the drawings:

Figure 1 shows a complete box arrangement in a perspective view and it can be seen that the two opposite sides (in this case the longest sides 2) form a wide transverse support 5 at its upper edge with a double wall 4 which is substantially continuous with a second tray arranged immediately below it. the base 1 rests directly and the support 5 of which extends along the upper edge of said longer sides 2 and continues for shorter sides. in the end zone 3 of the trays or front edges inside the tray.

Fig. 2 is a view similar to Fig. 1, showing the same * - * · arrangement implemented on the shorter sides or front edges 3.

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Figure 3 is a cut-away view of two trays according to the invention *: **: stacked on tops but not mutually matched. The lower level tray has an outer strip or protrusion 6 on the double • · * ··· * wall side, usually cut, which allows the inner protrusion to be defined as well as the end portion of the nearest side between the inner and outer strips.

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Figure 4 shows a front view of two stacked trays interconnected, with wide cutting openings formed between the stacked sides, through which openings the hand is inserted and placed at the bottom of the upper tray to separate the lower tray.

Fig. 5 is a cut-away view showing a part of the tray in which the small inner partition 4 forming the double walls of the opposite sides of the tray, either at the front edges or on the longer sides, is smaller in height than these and does not extend to the bottom of the box. Said small partition, when pressed down, joins and adheres to the inner plane of the corresponding side, thus forming a very strong but more economical tray, since the surface of the double walls 4 is reduced.

Figure 6 shows a tray in which the strips 4 with their elongated ends form two successive walls of the V-pattern, the first of which is transverse between the small inner partition and the nearest side and the second is stacked on top of each other, if possible, at the top of said nearest side.

In Fig. 7 the end strip is shown in a lower corner section and on the nearest side there is a section or notch made in line with said cut strip, which fits perfectly into said groove to join and engage the inner strip of the outer strip 6 surrounding and enveloping the corresponding corner of the box.

These embodiments should not be construed as limiting, as other solutions may be selected to provide this portion of the tray. However, the cases presented have been successfully tested and allow the tray to be fitted completely by mechanical means.

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Figure 8 shows a supplementary plate with a central opening which, if desired, can be used as a lid with a viewing opening to cover and protect the product to be stored in the tray.

Fig. 9 is a perspective view of a corner of an improved box according to the invention, showing the formation of a protrusion or corner edge at the upper edges of the corners of the box, comprising a support on which the nearest box to be stacked is placed with matching grooves when forming stacks.

This edge arranged in each corner of the tray comprises supports between which a second stackable tray is substantially "joined". With this arrangement, very stable loads or stacks can be achieved, in which it is practically impossible for the stacked trays to move laterally with respect to each other.

In these drawings, reference numeral 1 refers to a block comprising the bottom of a tray, the longest sides of which are indicated by the number 2 and the shorter sides or front edges by the number.

• · * · • · · • · 1 “I As can be seen from the box shown in Figure 1, the base 1 and longer sides 2 are normal parts of any open box or • · 1" 1 2 tray. Basically in this case • · · '· The features of the invention relate to front edges 3 which are reinforced with double walls by means of small inner partitions 4 which are joined together by an articulated joint at their upper edge so that a double wall thickness is achieved in the resulting double wall, which provides a wide base. 1. at its upper edge 5, on which the base 1 of another similar tray, which is stacked on tops, is directly supported.

* · · • 1 · * · e 1 · • · 2 m · 7 85574

According to the model shown in Figure 2, in each small inner partition wall 4 connected to the front edges 3, each of the two extensions at each end forming two successive walls 7, 8 is separated by an intermediate support line 9- When said inner partitions 4 are pressed down towards the inside of the box they form a double wall with the corresponding front edge 3, and the wall 7 is located obliquely across the inner front sides of the front edge 3 and the nearest long side 2.

The second end wall 8 is completely connected to the inner plane of the nearest long side 2 to which it is attached, preferably by gluing. The front edges 3 have outer strips 6 laterally which are pivoted 90 to join and engage the outer plane of the nearest long side 2.

The details outlined provide four notable arrangements that can be considered in detail in connection with Figures 1 and 2, as explained below: a) Formation of double-walled leading edges with high mechanical strength.

I b) Forming a triple wall in the end blocks of the longer sides of the tray, which are thus apparently greatly reinforced, as well as the front edges and corners. This results in a tray with high mechanical strength.

(c) The outer walls of the leading edges, comprising a central block 3 'and projecting lateral strips 6 which adhere substantially to the extremes of the longest sides 2, form a first ·; ··· support with a second stacked of a similar type: * j *. the leading edges and strips of the tray rest perfectly in line.

• · * ··· * d) The small inner partitions 4 of each front edge 3, like their lateral projections 7, 8, are located at a lower level than the upper edges 10 of said front edges 10, and their outer - ***: they form a second support 5 on which the second - • m · 8 85574 The bottom 1 of the hand-stacked tray rests directly when forming the stacks. Each tray upwards relative to the lower area fits next to the lower tray, resting its base 1 directly on the lower support 5. Simultaneously, the aforementioned front edge 3 and the protrusions 7, 8 rest directly on the upper edge of the front edge and the projections immediately below.

It can be seen from the figures, in particular from Figures 1, 2 and 3, that the height of the upper edge of the front edges 3 decreases, which coincides with the double-folded line along which the inner wall 4 of each front edge is recessed. This reduction forms a wide support which has already been treated, on which the bottom 1 of the tray immediately above rests.

In order for the upper tray to rest on the support 5 having a lower height in the tray below, two notches 11 are made in each of its corners at the lower edges, elongated by side strips 6, all so that each front edge 3 and its lateral protrusion 6 form a step 11 downwards. , parallel to the upper edge 10. In said figure 2, arrows are used to mark the parts of each lower tray which act as supports for the other. . ·. to the compatible lower parts of the tray, which is set to the next higher level during stacking.

The trays formed according to the present invention are found to be suitable, substantially "connected" to each other stacked, and to separate them the front edges 3 or the longest sides 2 are provided with a cut 12 in the central support 5, which is open at the top, according to Figures 1 or 2: : the pin through which the fingers of the hand are inserted Λ · 'to rest on the lower level of the bottom of the stacked boxes «· to remove the box.

···::: In Fig. 4, these sections 12 can be clearly seen in the picture-:: when two trays stacked on top of each other.

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Referring now to Figures 5, 6 and 7, the manufacture of a tray according to the invention is shown in three versions, the aim being to reduce the cost of the trays and therefore the small inner partitions 4 forming the front edge double wall have been reduced by approximately half their width; when these small partitions are pressed in, they rest and adhere with glue to the inner surface of the respective front edge 3, just like their end strips 8, which are attached to the longest sides 2 to the inner plane of which they are fitted.

Referring now to Figure 1, a perspective view can be seen of a tray arranged according to the standards of the invention, characterized by the longest sides 2 of the tray, each having two protrusions at the top comprising longitudinal strips 4 turned 180 towards the inside of the tray. the inner plane of the respective long sides 2, with which they form a double wall, at the upper edge of which a wide support or support 5 forming a lower support is formed, or a support lower than the support formed by the upper edges 10.

. . These brackets 5 have extensions for small inner partitions; 4 at the ends with their protrusions 7, 8 at both ends forming two successive blocks or walls which are - · articulated to each other. Part marked with number 7. ·: Is located transversely in the corner of the tray and the end wall 8 ·.: Rests and attaches to the inner wall of the corresponding front edge 3.

With this arrangement, a double-walled support ...: 5 is formed on the upper edge of the longest sides, which is extended into the end zones of the front edges 3 at the upper edges of the end walls 7, 8.

* 1 · • · · • · · 1 The outer walls of the longest sides 2 of the tray, extending from the support 5, rise to form a ridge 10 which turns rectangularly, projecting upwards from the end of the corresponding front edge • 1 · • · »» 10 85574 and providing an angular protrusion or ridge 10, these ridges being at each corner of the box, each consisting of two brackets, compatible with cuts arranged at the lower edges of the corners of each tray.

Likewise, the aforementioned corner ridges 10 of the corners also form holders or corner brackets between which the tray, which is stacked on top of one another, fits at its corners, making it impossible to perform a lateral displacement.

All of these arrangements are exactly similar to those previously described, referring to Figures 2, 5, 6, and 7, but in these arrangements what is used with the front edges of the tray, while in the description of Figure 1 these arrangements are made with the longest sides of the tray. formed, forms extensive ventilation spaces between the stacked leading edges because the height of the leading edges is less than that of the longest sides.

To the upper edges of the double partition wall of each longest side 2. - the folded supports 5 have a cut 12 which allows the trays to be treated to be stacked or separated. "* The tray shown in Figure 1 offers the following details: (a) Contrary to current practice, the longest sides 2 of the tray are higher than the shorter sides or leading edges 3.

(b) The longest sides 2 have a double wall by means of which they form a first support 5 at their upper edge, on which the bottom of the second tray, which is arranged in the next upper level, rests.

^ c) The longest sides 2 to be treated are higher at their ends - ** 'from the upper edge 10 than at their double-walled zone 5, and from their *' 'lateral edges protrude two strips 6 each turned 90 and holding the front edge of the tray.

II

11 85574 or the shorter sides 3 and form, with such protrusions 10, a second higher support line at each corner on which the corners of the tray to be stacked rest.

These angular ridges also comprise each of two grooves in the form of holders between which the stackable tray fits, making it impossible for it to experience lateral displacements.

Referring again to Figure 9, it can be seen that an important feature is that the fit is accurate either when the supports are formed at the upper edges of the front edges 3 (Figure 2) or when they are formed at the upper edges of the longest sides 2 (Figure 1). The present invention comprises forming an angular ridge 13 on the upper edge 10 of the outer wall of the double wall, which terminates the corners of the box upwards, forming two support lines 5, 10 at each corner, the ridges 13 fitted in cooperating grooves 11 in the corners of the overlapping trays. at the ends of the lower edges of the front edges 3 (or the longest sides 2), the lower section 11 of which is partially extended to the lower edge of the corner strips 6.

In such an arrangement, a stackable tray is provided with three support lines 5, 10, 15, the first two being located on the same level and the third 15 on a higher level on which the second similar tray rests on top of each other.

'· * It is to be understood that the new tray described is not limited to the method described and shown, since in practical applications it is possible to implement variations in its details, provided that these do not alter its main contents.

The novel and characteristic features of the invention are set out in the following claims.

Claims (4)

A stackable tray made of a single sheet of corrugated cardboard or the like, comprising a bottom (1) and four sidewalls (2,3) of which two opposing sidewalls (2) are double-folded and provided along its upper edge with a support part for supporting stackable trays while the two other side walls (3) have a lower height than the double folded side walls (4), while the double folded side walls (4) at each end exhibit double bent end flaps (7,8) with two consecutive wall portions (7,8), the first wall portion (7) joining the side wall (4) running transversely through the corner area of the tray (1), and the second wall portion (8) being adjacent to the side wall (3) or is attached thereto, and at the same time the double-walled side walls (4) at their upper edges are provided with smaller incisions (12), two of which are located above each other's side walls (4). end portion (10) to which is attached an equally high end extension (6) which, at 90 ° bending, is attached to the adjacent side wall (3), at the same time as the end portion (10) extends over the corner of the washer (1) and laterally forms a gap , in which the lower corner area of a stackable tray can come into contact with, characterized in that double folded sidewalls (2 or 3) in a manner known per se are arranged substantially perpendicular to the bottom of the tray (1) that the other two the side walls (3 or 2) are similarly arranged perpendicularly in relation to the bottom (1) of the tray, that: the end extension (6) in a manner known per se at its lower: edge has a cutting (11), the height is at least equal to! the distance to the upper edge of the end extension (6) has from the upper edge of the end walls (7,8), and that the higher end. portions (10) at their lower edges are likewise provided with a cutter (11) whose height corresponds to said distance. The washer according to claim 1, characterized in that the end extensions (6) are attached to the double-folded side walls (2 or 3) in one piece. ...: 3rd Tray according to claim 1 or 2, characterized in that the inner wall (4) of the double-folded side wall (3) is half as high as the side wall (3) and connected to the outer wall of the same, preferably by gluing, and that the second wall portion (8) of the end flaps (7,8) is supported on the upper edge of the attached side wall (Figures 6 and 7). Tray according to claims 1-3, characterized in that the end extensions (6) have a side extension extending down to the bottom of the tray (1), the height of which corresponds to the height of the double-folded side wall (3) (Figure 9).