RU211128U1 - Folding Tray - Google Patents

Abstract

The utility model relates to a cardboard container. The utility model is aimed at achieving a technical result, which consists in simplifying the design of a tray-type folding box through the use of a simplified mechanism for connecting the side walls to each other to increase the strength of the spatial form. The folding tray is made of a sheet cardboard blank by bending its parts along the fold lines, having a rectangular bottom, from which the first two opposite side walls are bent along the fold lines, each of two parts successively located through the fold line. The first part is made with foldable end flaps, and at the end sections of the second part, directed fold lines are made at an angle, the starting point of each of which is located at the top of the corner of the first part of the side wall, and the end point is at the free edge of the second side wall. The second two oppositely located side walls are made with the possibility of bending and are made on the end sections located next to the bendable end flaps of the first side walls, with fold lines directed at an angle, the starting point of each of which is located at the top of the bottom corner, and the end point is at the free edge second side wall. During assembly, the second side walls are bent towards the bottom and laid on its surface with the end parts bent and placed on top of these side walls. The end sections of the second part of the first side walls are bent along the fold lines, laid on top of the surface of the second parts, and glue is applied on top of them. The bendable end flaps of the first parts of the first side walls are bent along the fold lines, laid on top of the adhesive surface of the end sections of the second part of the first side walls, and glue is applied to them from above. And the first side walls are bent from the bottom and laid on top of the adhesive areas on the bent end valves of the first parts of the first side walls. 6 ill.

Description

The utility model relates to cardboard containers, namely, cardboard open boxes made of corrugated cardboard in the form of a tray (that is, with an open top), and can be used as a transport container for such a category of products as sour cream in cups. The claimed tray design is intended for assembly on an automatic assembly line or on an assembly plant, but can also be assembled manually.

Boxes or boxes consisting of the box itself in the form of a tray open on top are convenient because the packaging does not lose its presentation and, in most cases, can be reused. In addition, such packages are beneficial due to the lower consumption of cardboard and the simplification of its assembly. Currently, two methods of assembling such tray-type boxes are used: manual assembly and assembly on an automatic line. For each assembly technique, a specific design of the tray itself is used. During manual assembly, techniques are used to connect the walls to each other by introducing folding flaps of these walls either between sheets of double sides or by inserting flap tongues into special slots in the side walls.

An example is the tray type box described in WO 2011126218, B65D 5/30, B65D 5/64, B65D 85/34, publ. 10/13/2011, which is made from a cardboard sheet blank having a rectangular bottom, from which the side walls are bent along the fold lines, the first two of which, oppositely located, consist of two successively located parts, the first of which is bent from the bottom, and the second is bent from the first inwards towards the bottom and is laid along the first part with the formation of a double wall, and the other two side walls, also oppositely located, consist of two consecutive parts each, the first of which bends from the bottom and with its side valves is inserted into the space between the parts of the first double side walls, and the second part is bent from the first and is placed on top of the ends of the first double side walls, forming shelves, while the side flaps of the second parts are bent outside the first side walls and inserted with their tongues into the slots in these double walls, ensuring the fixation of the side walls of the tray between themselves.

A tray-type box designed for manual assembly cannot be used on an automatic assembly line due to the fact that on such a line the tools (knots, manipulators, pushers, stops, etc.) that bend the side walls from the bottom are always located outside (with the outer side of the workpiece) and are aimed at performing a simple action, the vector of which proceeds towards the sheet workpiece. With this algorithm of operation, the tools cannot insert the tongues into the slots or insert the valve between the walls, since this requires the mechanism to perform several actions simultaneously or sequentially with different directivity vectors.

An example of such a tray-type box is the solution according to RS 20110184, B65D 5/20, B65D 5/22, B65D 5/28, B65D 5/30, B65D 85/34, publ. 04/30/2013. This patent describes a tray-type box, which is made of a cardboard sheet blank having a rectangular bottom, from which the side walls are bent along the fold lines, the first two of which, oppositely located, are bent from the bottom, and their side flaps in the bent position are located on fold lines of the second side walls from the bottom, and the other two side walls, also oppositely located, consist of two consecutive parts each, the first of which is bent from the bottom and pressed against the side flaps of the first side walls, and the second part is bent from the first and is laid on top on the ends of the first side walls, forming shelves, while the side flaps of the second parts are bent outside the first side walls and fixed with buttons or blocks or push-button latches, ensuring the fixation of the side walls of the tray between them.

This tray type box is designed specifically for manual quick assembly and is not intended for assembly on an automatic line (or assembly machine) due to the simple unidirectional movements of the assembly mechanisms. Manual assembly is indicated by the fact that mechanical fasteners are used to fasten the side walls, which consist of an inner and outer counterpart like a button. Only the operator can install such clamps.

Tray-type boxes designed to be assembled on a machine can also be assembled by hand. But the machine allows you to collect up to 6-8 boxes per minute and provides high performance for large batches of tare packages. Manual assembly does not provide such results. Therefore, automatic lines and machines for assembling boxes and trays without the participation of an operator or worker are in demand today.

But the problem is that not all boxes, according to the design of the sheet blank cut, have the ability to be assembled both manually and automatically without manual labor. As a rule, hand-assembled boxes have a more complex cut of the blank and provide a more reliable tray design through the use of complex locking mechanisms to connect the side walls to each other. It also allows you to form reinforcements on the walls and in the corners, which allows you to use such trays in a stack.

But the tray assembled on a line or an automatic type installation is a three-dimensional structure. Not all such installations are located directly at the line for filling trays with products, which leads to overstocking of the warehouse with bulky containers, which are inconvenient not only for storage, but also for transportation. In this case, folding trays assembled on an automatic installation, which are conveniently stored in stacks and conveniently transported to the consumer, have an advantage.

An example of such a performance is the tray described in CN 211108482, B65D 5/24, B65D 5/36, publ. 07/28/2020, which is assembled from a sheet blank by bending its parts using gluing.

The blank from a sheet of cardboard contains a bottom, from which the first side walls extend along the fold lines on two opposite sides, each of which is made of two parts, the second of which, along the fold line, is to be folded into the tray and secured by inserting a tongue into the slot in the bottom . And with the other sides of the bottom, the second side walls are connected along the inflection lines, the end flaps of which are made foldable from the sides and have a fold line on each, passing from the corner point of the bottom to the middle of the free edge of the flap. When assembling on the machine, the manipulator glues the corner sections of each end valve that face the first part of the first side walls and folds the second side walls, laying them on the bottom and on the first parts of the first side walls. A flat assembly is obtained in which the second side walls lie on the bottom and on part of the first side walls. Then, the second parts of the first side walls are folded over and placed on the flat assembly from above. It turns out a compact assembly of the tray. When opening the assembly to obtain a tray, the second parts of the first side walls are opened and all the walls are straightened due to the fact that the walls are glued together. And only after the side walls are straightened, the second parts of the first side walls are bent inside the tray and their tongues are inserted into the slots in the bottom. These second parts, by inserting tabs, secure the tray walls against re-folding along the fold lines of the end flaps of the first side walls.

This decision is accepted as a prototype for the declared object.

The disadvantage of the design of this tray is that the last operation of assembling the tray when it is straightened is carried out manually by the operator, who needs to insert the second parts of the first walls into the tray and insert the tongues of these parts into the slots in the bottom. Therefore, it cannot be assumed that this tray can be assembled from beginning to end on a line or automatic assembly plant.

Another disadvantage is also the complexity of the assembly. The second side walls are made with longitudinal flaps, which, after straightening the tray, also need to be bent inside the tray towards the bottom and fixed with tongues in the bottom slots. Only in this case, the tray retains its shape and the walls are flat and flat and retains its shape of the tray.

Thus, the known tray is used for partial assembly in an automatic assembly plant to be converted into a flat assembly which can be stacked and transported. And at the place of packing products into the tray, it is necessary to straighten the assembly to the shape of the tray and bend additional valves inward, which is done manually by the operator.

Thus, the present utility model is aimed at achieving a technical result, which consists in simplifying the design of a tray-type folding box through the use of a simplified mechanism for connecting the side walls to each other to increase the strength of the spatial form.

The specified technical result is achieved in that the folding tray is characterized by the fact that it is made of a sheet cardboard blank by bending its parts along the fold lines, having a rectangular bottom, from which the first two opposite side walls are bent along the fold lines, made each of two in series parts located through the kink line, wherein the first part is made with foldable end flaps, and at the end sections of the second part, directed fold lines are made at an angle, the starting point of each of which is located at the top of the corner of the first part of the side wall, and the end point is at the free edge of the second side wall, the second two oppositely located side walls are made with the possibility of bending and are made on the end sections located next to the bendable end flaps of the first side walls, with fold lines directed at an angle, the starting point of each of which is located at the top of the bottom corner, and the end point is on the free edge of the second side wall, while during assembly the second side walls are bent towards the bottom and laid on its surface with the end parts bent and laid on top of these side walls, the end sections of the second part of the first side walls are bent along the fold lines , are laid on top of the surface of the second parts and glue is applied on top of them, the bendable end flaps of the first parts of the first side walls are bent along the fold lines, laid on top of the adhesive surface of the end sections of the second part of the first side walls and glue is applied on top of them, and the first the side walls are bent from the bottom and laid on top of the adhesive sections of the folded end flaps of the first parts of the first side walls.

At the same time, to optimize the straightening process without deformation of the flat parts of the tray, the fold lines of the end sections are located at an angle of 43.7°.

These features are essential and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

This utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

In FIG. 1 - cardboard sheet blank for a folding tray;

fig. 2 - shows the first addition of the workpiece with sizing the first four points;

fig. 3 - shows the second addition of the workpiece with the sizing of the second four points;

fig. 4 - general view of the flat assembly of the tray;

fig. 5 is a top view of the straightened tray;

fig. 6 is a general view of the straightened tray.

According to this utility model, a new packaging for goods is considered, the feature of which is that it is a folding tray made of corrugated cardboard (cardboard) by bending parts of a sheet blank (Fig. 1) with the formation of a bottom and side walls bent from it. The tray can be used as a container for storage, display of goods on a trading shelf or a transport container for such a category of products as sour cream in cups. A feature of the tray under consideration is that the design of the sheet blank is made in such a way that the tray can be assembled on an automatic machine or an automatic assembly line using only eight gluing points. But nothing also excludes the possibility of assembling the tray manually.

In general, the claimed folding tray has the following 1 algorithm for its design.

A folding tray is made from a sheet cardboard blank by bending its parts along the fold lines, having a rectangular bottom, from which the first two opposite side walls are bent along the fold lines, each of two parts successively located through the fold line.

The first part is made with bendable end flaps, and on the end sections of the second part there are fold lines directed at an angle, the starting point of each of which is located at the top of the corner of the first part of the side wall, and the end point is at the free edge of the second side wall.

The second two oppositely located side walls are made with the possibility of bending and are made on the end sections located next to the bendable end flaps of the first side walls, with fold lines directed at an angle, the starting point of each of which is located at the top of the bottom corner, and the end point is on the free edge of the second side wall.

During assembly, the second side walls are bent towards the bottom and laid on its surface with the end parts bent and placed on top of these side walls. The end sections of the second part of the first side walls are bent along the fold lines, laid on top of the surface of the second parts, and glue is applied on top of them.

The bendable end flaps of the first parts of the first side walls are bent along the fold lines, laid on top of the adhesive surface of the end sections of the second part of the first side walls, and glue is applied to them from above. And the first side walls are bent from the bottom and laid on top of the adhesive sections of the bent end valves of the first parts of the first side walls.

The following is an example of a specific implementation of the utility model with reference to FIG. 1-6.

A tray-type box (tray) is made from a sheet cardboard (corrugated cardboard) blank 1 (Fig. 1) by bending its parts along the fold lines. The workpiece 1 includes a rectangular bottom 2, with which side walls 4 and 5 are connected along all its sides along fold lines 3. Each two oppositely lying side walls are made of the same shape and the same design.

From the bottom along the fold lines, the first two oppositely located side walls 4 are bent, each of two parts 6 and 7 successively located through the kink line. directed fold lines 9, the starting point of each of which is located at the top 10 of the corner of the first part 6 of the side wall 4, and the end point is on the free edge of the second part of the second side wall. This forms a triangular foldable portion 11 at the end of the second part 7. As a condition determined by experiment, the fold lines 9 of the end portions 11 are at an angle of 43.7°.

The second two oppositely located side walls 5 are made with the possibility of bending from the bottom and are made on the end sections located next to the bent end valves 8 of the first side walls 4, with fold lines 12 directed at an angle, the starting point of each of which is located at the top 13 of the bottom corner , and the end point at the free edge of the second side wall 5. This forms a foldable triangular section 13 at the end of the side wall 5. As a condition determined experimentally, the fold lines 12 of the end sections 13 are at an angle of 43.7°.

All bending operations are performed by manipulators of the automatic assembly machine by means of direct unidirectional movements. The tray is assembled in automatic mode as follows (Fig. 2-4).

The vacuum suction cup of the manipulator grips the sheet blank as shown in FIG. 1, that is, in a flat state without folds of its individual parts, and placed on the working table of the machine, where the workpiece is pressed against the surface of this table under the action of vacuum.

Next, the manipulator bends the end sections along the oblique fold lines on the side walls 5 down, and then the side walls 5 relative to the bottom and lay the side walls 5 with their bent sections over the bottom surface.

Then, with the thrust part of the manipulator, the end sections 11 of part 7 are bent (along the oblique fold lines) and placed with pressure over the side walls 4. Then the nozzle is brought in and glue is squeezed out in the form of a dosed drop 14 onto the upper surface of the bent end sections 11 (Fig. 2).

After that, the end valves 8 of the first parts 6 of the first side walls 4 are bent by the manipulator along the fold lines, and they are placed on top of the adhesive surface (adhesive drops - pos. 14) of the end sections 11 of the second part 7 of the first side walls 4 and are applied on top of them glue in the form of dosed drops 15 (Fig. 3).

And then the first side walls 4 are folded from the bottom with a manipulator and placed on top of the adhesive areas (glue drops - pos. 15) on the folded end valves of the first parts of the first side walls.

The result is a flat folded tray blank which is transferred to a cop or stack (FIG. 4).

After the glue dries, the tray may open. To open the tray, the operator straightens the side walls 4, lifting them up. Since the side walls are glued together, the lifting (straightening) of the side walls 4 leads to the straightening of the side walls 5. The straightening process continues until the side walls take the form of a tray with flat side walls.

In this case, part 7 of the first side walls 4, due to the connection with the end valves 8, will be located in the form of a shelf 16 or ceiling overlapping the tray opening from above (Fig. 5 and 6) in a position at a slight angle to the bottom surface. This shelf 16 is connected to the side wall 5 through a triangular protrusion 17 (outer fold) formed by the connection of section 11 with the end valve 8. When choosing the angle of inclination of the fold lines 9 and 12 is less than 45° after straightening the tray, this triangular protrusion 17 forms an obtuse angle , which prevents the shelf 16 from lowering into the tray. This protrusion 17 begins to work as a means of supporting the shelf 17 across the tray and as a stiffening rib that prevents the tray from deforming and changing its spatial shape (Figs. 5 and 6). Experiments on the creation of prototypes have shown that the maximum effectiveness of the use of a triangular protrusion 17 in the form of an outer fold appears if the fold lines of the end sections are located at an angle of 43.7°. Deviation from this angle results in a slight loss of said efficiency.

Thus, the utility model makes it possible to simplify the design of the folding tray through the use of a simplified mechanism for connecting the side walls to each other in order to increase the strength of the spatial form. At the same time, the folding tray is most convenient when assembling on an automatic assembly unit, which simplifies the process of its creation.

Claims (2)

1. A folding tray, characterized in that it is made of a sheet cardboard blank by bending its parts along the fold lines, having a rectangular bottom, from which the first two opposite side walls are bent along the fold lines, each of two parts successively located through the fold line , wherein the first part is made with foldable end flaps, and on the end sections of the second part, directed fold lines are made at an angle, the starting point of each of which is located at the top of the corner of the first part of the side wall, and the end point is at the free edge of the second side wall, the second two oppositely located side walls are made with the possibility of bending and are made on the end sections located next to the bendable end flaps of the first side walls, with fold lines directed at an angle, the starting point of each of which is located at the top of the bottom corner, and the end point is at the free edge of the second side walls, while during assembly the second side walls are bent towards the bottom and laid on its surface with bending the end parts and laying them on top of these side walls, the end sections of the second part of the first side walls are bent along the fold lines, laid on top of the surface of the second parts, and glue is applied on top of them, the bendable end flaps of the first parts of the first side walls are bent along the fold lines, laid on top of the adhesive surface of the end sections of the second part of the first side walls, and glue is applied on top of them, and the first side walls are bent from the bottom and laid on top on the adhesive sections of the foldable end flaps of the first parts of the first side walls. 2. Folding tray according to claim 1, characterized in that the fold lines of the end sections are located at an angle of 43.7°.

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