RU2654191C1 - Sheet cardboard blank for tray intended for packaging different in diameter bottles or cans, a tray made of this blank (variants) - Google Patents

Abstract

FIELD: manufacturing technology.

SUBSTANCE: sheet cardboard blank is intended for making a tray for packaging different in diameter bottles or cans and contains a rectangular-shaped bottom, which corners are beveled. Four side walls of equal height are extended from the bottom along the knuckle lines, two of the walls are located opposite to each other and are made with end flaps, which are a continuation of these walls along their length and each of them is made of two parts interconnected through a knuckle line for attachment to adjacent side walls. Each knuckle line of the side walls from the bottom is made in the form of two parallel scoring lines at a distance from one another extended along the side walls from the bevel on one side of the bottom to the bevel on the opposite side of the bottom to form the outer and inner contours of the side wall knuckle from the bottom. Length of the flap part adjacent to the side wall is made not less than the length of the bottom bevel on the side of this side wall. Knuckle lines of each end flap relative to the side wall and parts of this flap are made in the form of two parallel scoring lines at a distance from one another.

EFFECT: group of inventions provides a tray with a high rigidity of the bottom.

5 cl, 6 dwg

Description

The invention relates to cardboard containers, namely to cardboard trays made of corrugated cardboard or cardboard, and can be used as transport containers used on automatic packaging lines.

Trays as packaging containers have been widely used in large enterprises for packaging cans or bottles on automatic lines. The tray is fed to such lines in the form of sheet blanks, then the batch of cans, calculated by the amount to fill the entire surface of the bottom of the workpiece, are laid on top of the part of the blank, which is the bottom of the future tray. And then the workpiece is fed to the post, on which the machine’s legs bend the side walls from the bottom, form the side walls and fix the valves of one wall to adjacent side walls. After that, at the next post, a shrink film (stretch film) is applied to the entire package and deposited under heat until the tray and cans are tightly tightened.

Such trays are presented on the sites "Cardboard Boxes" (http://www.city-pack.ru/types/166-lotki_banki.html), "PAKMIL" (http://packmill.ru/upakovka/), etc. Such the tray is made of a sheet blank of corrugated cardboard or thick brown cardboard, which consists of a rectangular bottom shape, from which side walls extend along the bend lines, two of which are located opposite to each other and are made with end bendable valves. At the post of the automatic packaging line, the bottom is pressed by the weight of cans or bottles to the supporting surface, which allows the legs of the machine to press simultaneously on all side walls to bend them to the position of pressing against the cans or bottles. And then the end valves are bent off by other paws, pressed against adjacent walls and fixed with glue or staples. The process is simple and today it is technologically proven.

However, since the principle of all automatic lines is that all moving parts of the manipulators are adjusted for certain final movements and cannot self-adjust during packaging, it is necessary to use a tray for each size of cans or bottles, that is, a tray with such bottom dimensions, the dimensions of which precisely calculated according to the size of the batch of the packaged goods. This leads to the fact that the automatic packaging line without changeover can only pack one size of cans or bottles. And when changing the size of the can or bottle transversely, you have to use a tray with other sizes and re-align the line. This feature of all automatic packaging lines leads to the need to have a large number of cardboard blanks of the same design, which differ only slightly from each other.

For example, the outer diameter of a standard aluminum beer can with a capacity of 0.5 l is 66.3-66.6 mm (GOST R 51756-2001 - Deep-drawn aluminum cans with easily openable lids. Technical conditions), and the diameter of the beer bottle is amber color with a capacity of 0, 5 l is equal to from 64 mm to 79 mm for the model of the SL-8001-SL-8011 series, or 67 mm for a standard glass bottle, or from 58 mm to 71 mm for glass bottles of the SL-8604-SL-8666 series of transparent color. It can be seen from the above examples that the difference between the transverse dimensions of the standard shapes of cylindrical containers, which are packed on automatic lines, sometimes reaches from 1 mm for each container to 10-11 mm. If we consider that 24 bottles (6 × 4 pcs.) Fit in a standard tray, then the difference in size along the length of the side of the tray can reach from 6-8 mm to several centimeters. The dimensions of metal and glass and other containers in the form of containers are regulated by different regulatory documents, which determines a wide range of transverse dimensions and the need for the same number of sizes of the same workpiece design.

Known folding cardboard box, made in the form of a tray and formed from one blank with bend lines made in it, containing two longitudinal and two transverse walls formed with end flaps provided with tongues, bent along the corresponding bend lines, and a bottom with two slots to fit the tongues, each of longitudinal and transverse walls is made uneven with elevated sections at its ends, the profile of all walls in height is made variable, while the height of the raised sections at the ends tenochka is the same, each of the end valves in the workpiece is made with two inflection lines and is equipped with an additional section mating with the bottom, and the slots are placed at a distance from the end faces of the bottom, equal to the width of the additional section of the end valves (RU 22128, B65D 5/20, publ. 03/10/2002).

This design of the tray has a complex configuration, which makes it inconvenient for use on automatic packaging lines, this is due to the fact that the side walls are made of different heights and complex shapes, requiring the paws to pull different travel moves. This slows down the packaging process and reduces the throughput of the automatic packaging line.

To maintain the pace of packaging, it is necessary to synchronize the movements of all the legs bending the side walls, and bring them to the same value along the length of the stroke.

The closest solution adopted as a prototype for the designs of trays, the design of the tray for beer cans, made of a sheet of corrugated cardboard or cardboard, which consists of a rectangular bottom, whose corners are beveled with the formation of an eight-sided shape, while from the bottom along four side walls of the same height extend over the inflection lines, two of which, located opposite to each other, are made with end bendable valves, each of which is made of two parts while connected to each other through the inflection line, when folding, the side walls are bent from the bottom, the inner parts of the valves are bent relative to their side walls and laid along the bevels at the bottom corners, and the outer parts of the valves are bent relative to the internal and laid along adjacent adjacent side walls, to which these parts of the valves are glued or fastened with brackets (a beer tray laid out in the "Branded Packaging" section of the Pakmil website of Pakmil, RU, on-line on the Internet n access address: http://packmill.ru/upakovka/, found in January 2017, at See FIGS.. 7).

In this tray, in the assembled state, the corner zones are not straight, but are beveled walls, which allows you to tightly pack cans and bottles in the corner zones. The exclusion of sharp corner zones also favorably affects the safety of shrinkable thermofilm, since sharp corners as elements of a breakthrough of the film are excluded. But with all this, the tray has one size and is designed for a specific jar. This size is taken into account in advance and the bottom dimensions are selected for this size of cans. Accordingly, when changing the type of can or bottle, this tray becomes unusable.

From the same source there is known a sheet cardboard blank for a tray for packing bottles or cans, containing a rectangular bottom with angled bevels, while four side walls of the same height extend from the bottom along the inflection lines, two of which are located opposite to each other friend, made with end valves, which are a continuation of these walls along their length and each of which is made of two parts interconnected through an inflection line for attachment to adjacent side enkam.

Also from this source, a method for manufacturing a tray for packing bottles or cans is clear, which consists in the fact that in a cardboard sheet blank with a rectangular shape with a bottom from which the sides extend along the inflection lines, two of which are located opposite to each other, made with end valves made of two successively arranged parts through the inflection line in the form of extensions of these walls along their length, they bend all the side walls relative to the bottom, then bend the end flaps from the side walls such that a portion of the valve adjacent to the side wall, is placed along the bottom of the bevel, and an end portion that fits along the surface of the valve located adjacent the wall and is attached thereto.

Therefore, a well-known source (a beer tray, laid out in the section "Company packaging" on the site "PAKMIL") is also used as a prototype for the claimed method and sheet blanks.

The present invention is aimed at achieving a technical result, which consists in making it possible to convert a tray made from a sheet blank from one size of packaged cans or bottles to another size by changing the bottom area without changing the size of the sheet stock.

The specified technical result is achieved by the fact that in a sheet cardboard blank for a tray for packing bottles of different sizes or cans containing a rectangular shape, the bottom has angled bevels, while four side walls of the same height extend from the bottom along the inflection lines, two of which, located opposite in relation to each other are made with end valves, which are a continuation of these walls along their length and each of which is made of two parts connected together through an inflection line for replicating to adjacent side walls, each line of inflection of the side walls from the bottom is made in the form of two parallel spaced lines of bigs, spaced along the side walls from the bevel on one side of the bottom to the bevel on the opposite side of the bottom for the formation of external and internal contours kinks of the side walls from the bottom, while the length of the part of the valve adjacent to the side wall is made not less than the length of the bevel of the bottom on the side of this side wall, and the relative bend line of each end valve is relative but the side walls and parts of this valve are made in the form of two parallel lines of bigs spaced apart from each other.

Moreover, on the part of each end valve associated with the side wall, additional bigs can be made directed across this valve to bend this part and give it a semicircular shape.

The specified technical result is achieved by the fact that in the tray for packaging bottles and cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, made with two end-to-end parts made of two successive parts through the inflection line in the form of extensions of these walls along their length, all the inflection lines are made in two parallel spaced apart from each other big lines, the side walls are bent from the bottom along the big lines of the outer contour of the inflection lines, and the end part of each end valve is bent along one of the big lines from the part of this end valve adjacent to the side wall, and laid along the adjacent side walls with attachment to it for the formation of right angles at adjacent side walls.

The specified technical result is achieved by the fact that in the tray for packaging bottles and cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, made with two end-to-end parts made of two successive parts through the inflection line in the form of extensions of these walls along their length, all the inflection lines are made in two parallel spaced apart from each other big lines, the side walls are bent from the bottom along the big lines of the inner contour of the inflection lines, the part of each end valve adjacent to the side wall is bent from it along one of the big lines and laid along the angular bevel of the bottom, and the end part of this end valve is bent along one of the big lines from the part of this valve adjacent to the side wall and laid along the adjacent side wall with attachment to it to form a beveled side wall between adjacent side walls kami that are connected to the bottom.

The specified technical result is achieved by the fact that in the tray for packaging bottles and cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, made with two end-to-end parts made of two successive parts through the inflection line in the form of extensions of these walls along their length, all the inflection lines are made in two parallel spaced apart from each other big lines, the side walls are bent from the bottom along the big lines of the inner contour of the inflection lines, on the part of the end valve adjacent to the side wall, additional big are made directed across this valve, a part of each end valve adjacent to the side wall , bent from it along one of the big lines and curved arcuately along the angular bevel of the bottom along the lines of additional bigs, and the end part of this end valve is bent along one of the big lines from the part of the valve, adjoining minutes to a side wall, and is laid along the adjacent side walls with attached thereto to form arcuately curved side wall disposed between adjacent side walls, which are connected with the bottom.

The specified technical result is also achieved by the fact that a method of manufacturing a tray for packaging bottles or cans of different diameters consists in the fact that the cardboard sheet has a rectangular shape with a bottom, from which the sides extend along the inflection lines, two of which are located opposite to to each other, made with end valves made of two successively arranged parts through the inflection line in the form of extensions of these walls along their length, they are carried out for every two positively located side walls, shortening their lengths in the direction from adjacent side walls towards each other, then trimming the corner zones of the bottom to form bevels between adjacent side walls, then all the bend lines are made in the form of two parallel spaced apart big lines and the assembly of the tray is carried out by bending each part of the sheet stock along one of the two lines of the big.

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

The present invention is illustrated by a specific example of execution, which, however, is not the only possible, but clearly demonstrates the possibility of achieving the desired technical result.

In FIG. 1 is a general view of a sheet blank for manufacturing a tray;

FIG. 2 is a first example of assembling a tray with right angles from the blank of FIG. one;

FIG. 3 is a second example of assembling a tray with right angles from the blank of FIG. one;

FIG. 4 - a fragment of the valve on the sheet stock;

FIG. 5 - valve assembly, axonometric projection, fragment;

FIG. 6 is a third example of assembling a tray with rounded corners from the blank of FIG. one.

According to the present invention, there is considered the design of a tray for packaging cans or bottles on automatic packaging lines, enabling packaging of at least two containers (bottles or cans) of different transverse dimensions (diameters).

A feature of the claimed tray, in contrast to the known trays, is that parallel fold lines are applied to the tray and, when forming, the tray can have two different internal sizes depending on which fold lines the tray is folded along: external or internal.

In general, a sheet cardboard blank for creating a tray into which bottles or jars of different diameters can be packaged contains a rectangular bottom with angled bevels, with four side walls of the same height extending from the bottom along the inflection lines. Two side walls, located opposite to each other, are made with end valves, which are a continuation of these walls along their length. Each end valve is made of two parts interconnected via an inflection line for attachment to adjacent side walls.

Each line of inflection of the side walls from the bottom is made in the form of two parallel lines of bigs spaced apart from each other, stretched along the side walls from the bevel on one side of the bottom to the bevel on the opposite side of the bottom to form the external and internal contours of the bends of the side walls from the bottom.

The length of the valve portion adjacent to the side wall is made not less than the length of the bevel of the bottom on the side of this side wall. The inflection lines of each end valve relative to the side wall and the parts of this valve to each other are made in the form of two parallel spaced lines of bigs spaced from each other.

Below is an example of the execution of such a sheet blank.

The tray for packaging bottles or cans of different diameters is made of corrugated cardboard or cardboard. A sheet blank is cut out of this material (Fig. 1), which includes a rectangular bottom 1, whose corners 2 are beveled to form an eight-sided plan. In this regard, four sides 3 and 4 (two opposite each other) are considered the main, and side 5 at the beveled corners - secondary. The implementation of the bottom angles beveled is necessary to free up the space of the corner zones and use this free space to accommodate the end flaps 6 used to connect the side walls to each other.

Four side walls 3 and 4 of the same height extend from the bottom along the inflection lines, two 3 of which, located opposite to each other, are made with end bendable valves 6, each of which is made of two parts 7 and 8 (inner 7 and outer 8 parts), interconnected through the inflection line 9 for laying and attaching to adjacent side walls.

A feature of the execution of the sheet blank is that each bend line of the side walls from the bottom is made in the form of two parallel spaced lines of big 10s spaced apart from each other. The bigi 10 along each side wall is made so that they begin and end at the sections of the beveled bottom corners. Thus, along the perimeter of the bottom, two contours of the bigs are formed, providing an inflection of each side wall along one of the inflection lines. It is not necessary that all side walls should be bent only along the outer or inner contour of the bigs. This design allows part of the walls to bend only along the inner, and others along the outer contour of the big. This design allows you to artificially change the bottom area used for a specific size of cans or bottles. For example, if the distance between the bigs on each side of the side wall or the bottom is, for example, 5 mm, then when using the external contour of the bigs, the tray increases the size of the bottom by 10 mm, which allows you to use this tray for containers with a difference in diameter of up to 1.5- 1.6 mm (when packing cans or bottles according to the 6 × 4 pattern). Thus, according to this utility model, the tray, due to its transformation, can be simultaneously used for a fairly wide range of cylindrical containers, whose diameter differs by up to 2 mm. This eliminates the need for cutting a large number of blanks for specific container sizes, increases the profitability of the package, reduces the cost of the product in the package and eliminates the need for control on the coincidence of the size of the blanks with respect to the size of the containers to be packed. Moreover, due to the equality of the distances between the bigs along each side wall, it is possible to use the same automatic packaging line without changing the settings along the paths of the legs of the bending walls. A design is possible in which the distances between the bigs can be unequal, that is, the bigi at one opposite side walls can be spaced apart from each other, greater than the bigi at other side walls.

A feature of the claimed invention is that, in principle, the tray uses a new cutting of a standard blank for a regular tray with a bottom and four walls (standardized blank for tray 0452 according to the FEFCO catalog, 2007 - European unified catalog of corrugated cardboard containers). Using such a standardized sheet blank, it is possible to implement a method of manufacturing a tray for packaging bottles or cans of different diameters.

This method consists in the fact that in a cardboard sheet with a rectangular shape, the bottom, from which the lateral sides extend along the kink lines, two of which are located opposite to each other, made with two end-valves made of two consecutive parts through the kink line in the form of extensions of these walls along their length, for each two oppositely located side walls, their lengths are shortened in the direction from adjacent side walls towards each other gu, then they trim the angular zones of the bottom to form bevels between adjacent side walls, and then all the bend lines are made in the form of two parallel spaced big lines, and the tray is assembled by bending each part of the sheet blank one of two big lines.

The use of end valves 6, consisting of two parts 7 and 8 connected in series through the inflection line, allows one to obtain a number of advantages, manifested in the fact that it is possible to create a series of trays that are identical in design but different in size.

So, if the side walls are bent from the bottom along the big lines of the external contour of the inflection lines, and the end part of each end valve is bent along one of the big lines from the part of this end valve adjacent to the side wall, and laid along an adjacent side wall with attachment to it, then you can get a tray with right angles at adjacent side walls (Fig. 2). In this case, right angles are formed in the tray, and through holes are formed in the corner zones of the bottom, which can be considered as ventilation ducts for ventilation of the internal space of the bottle tray closed with a stretch film.

If the side walls are bent from the bottom along the big lines of the inner contour of the inflection lines, the part of each end valve adjacent to the side wall is bent from it along one of the big lines and laid along the angular bevel of the bottom, and the end part of this end valve is bent along one of the lines big from the part of this valve adjacent to the side wall, and laid along the adjacent side wall with attachment to it, you can get a tray of a smaller bottom, which formed a beveled side wall between adjacent adjacent side walls which are connected to the bottom (FIG. 3). It turns out a tray with beveled corner walls.

As an option, in the tray, the bending of some walls can be done along the big edges of the external contour, and the bending of the other side walls can be done along the big beams of the inner loop. This allows you to vary the combination of dimensional options for the bottom, adjusting it to different sizes of packaged containers.

In order to make it possible to change the shape of the corner zones (from the right angle to the beveled wall), the length of the inner part of the end valve is equal to the length of the bevel of the bottom angle. Only in this case, this part of the valve can lie along the length of the bevel, forming a beveled end wall 11 (Fig. 3).

Considering that during automatic assembly of the tray on the packaging line, tolerances are possible at the location of the workpiece or cans on the workpiece, etc., it is proposed to double all the bend lines of the end valves relative to the side walls and parts of the end valves relative to each other, i.e. two parallel big spaced 12 apart 12. This allows you to compensate, within tolerances, the poor position of the packaging components or the offset when assembling the tray. When folding the tray on the line, depending on the position of the side walls with respect to each other, the end valve is bent along the line of that big, relative to which its position can be aligned with the wall to which it should be attached.

In addition, on the part of each end valve connected to the side wall, additional bigs are made directed across this valve to bend this part and give it a semicircular / arc-shaped shape. So, on the inner part of the end valves can be applied short bigi 13, directed across the valve. These short bigs are spaced apart from each other, which makes it possible to obtain a rounded corner 14 when assembling the tray, as shown in FIG. 4-6. In this case, the lateral part of the walls in the area of the oblique corner of the bottom becomes rounded, that is, the possibility of a tight fit to the shape of the can located in the corner of the bottom of the bottom. In principle, such short bigs used to give the valve roundness can also be on the outside. The length of the part of the valve adjacent to the side wall can be made slightly longer than the length of the bevel (for more pronounced roundness).

Thus, if the part of each end valve adjacent to the side wall is bent away from it along one of the big lines and curved arcuately along the angular bevel of the bottom along the lines of additional bigs, and the end part of this end valve is bent along one of the big lines from the part of the valve, adjacent to the side wall, and laid along the adjacent side wall with attachment to it, you can get a tray arcuate curved side walls between adjacent side walls that are connected to the bottom (Fig. 5 and 6).

The present invention is industrially applicable and can be manufactured using known technologies for cutting sheet blanks from cardboard or corrugated cardboard. EFFECT: invention makes it possible to convert a tray made from a sheet blank from one standard size of packaged cans or bottles to another standard size by changing the bottom area without changing the dimensions of the sheet blank. That is, the invention allows to greatly reduce the assortment of sheet blanks used for cans or bottles of different diameters, and to use a single blank, which allows using bottom bends to obtain the bottom space of various areas, correlated with a sufficiently large variation in the diameters of cans or bottles of different sizes. Moreover, this design of the sheet blank requires one adjustment of the line, that is, the exposure of certain moves of the legs of the inflection of the side walls. When changing the transverse size of the cans, no readjustment of the moves of the legs is required. This is due to the fact that the legs move when the side walls are bent to the location of these walls resting against cans or bottles. The difference in the lateral size of the can or bottle up to 1-1.5 mm is compensated by the tolerances on the moves of the legs, that is, the legs stop moving when resistance appears above the specified one. This feature is used as a constructive solution when choosing the distances between double bigs.

Claims (5)

1. A sheet cardboard blank for a tray for packing bottles or cans of different diameters, containing a rectangular bottom with angled bevels, and four side walls of equal height extend from the bottom along the inflection lines, two of which are located opposite to each other friend, made with end valves, which are a continuation of these walls along their length, each of which is made of two parts connected together through an inflection line for attachment to adjacent side walls, molded characterized in that each line of inflection of the side walls from the bottom is made in the form of two parallel lines of bigs spaced apart from each other, stretched along the side walls from the bevel on one side of the bottom to the bevel on the opposite side of the bottom to form the external and internal contours of the bends of the side walls from the bottom, while the length of the part of the valve adjacent to the side wall is made not less than the length of the bevel of the bottom on the side of this side wall, and the inflection lines of each end valve relative to the side wall and parts of this valves between themselves are made in the form of two parallel spaced apart lines of the bigs. 2. A sheet cardboard blank according to claim 1, characterized in that on the part of each end valve connected to the side wall, additional bigs are made, directed across this valve to bend this part and give it a semicircular shape. 3. A tray for packaging bottles or cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, made of two in series located parts through the inflection line by end valves in the form of extensions of these walls along their length, characterized in that all the inflection lines are made in the form of two parallel spaced apart each other of the big lines, the side walls are bent from the bottom along the big lines of the outer contour of the inflection lines, and the end part of each end valve is bent along one of the big lines from the part of this end valve adjacent to the side wall, and laid along an adjacent side wall with attachment to it for the formation of right angles at adjacent side walls. 4. A tray for packing bottles or cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, made of two in series located parts through the inflection line by end valves in the form of extensions of these walls along their length, characterized in that all the inflection lines are made in the form of two parallel spaced apart each other of the big lines, the side walls are bent from the bottom along the big lines of the inner contour of the inflection lines, the part of each end valve adjacent to the side wall is bent from it along one of the big lines and laid along the angular bevel of the bottom, and the end part of this end valve is bent along one of the big lines from the part of this valve adjacent to the side wall and laid along the adjacent side wall with attachment to it to form a beveled side wall between adjacent side walls that are connected to the bottom. 5. A tray for packaging bottles or cans of different diameters, made of a cardboard sheet with a rectangular shape with a bottom with beveled corners and side walls bent along the inflection lines, two of which are located opposite to each other, are made of two in series located parts through the inflection line by end valves in the form of extensions of these walls along their length, characterized in that all the inflection lines are made in the form of two parallel spaced apart each other of the big lines, the side walls are bent from the bottom along the big lines of the inner contour of the inflection lines, on the part of the end valve adjacent to the side wall, additional bigs are made directed across this valve, a part of each end valve adjacent to the side wall is bent away from it along one of the lines of the bigs and is curved arcuately along the angular bevel of the bottom along the lines of the additional bigs, and the end part of this end valve is bent along one of the lines of the bigs from the part of the valve adjacent to the side wall, and laid in eh adjacent side walls with attached thereto to form an arcuately curved side wall disposed between adjacent side walls, which are connected with the bottom.

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