FI111237B - corner protection - Google Patents

Description

111237

Edge protection

The present invention relates to an angle guard for stacks of plate-like objects. These shields protect the corners of stacked objects for storage and transportation. Such objects are generally formed into multi-height stacks on a transport platform, which are bound and protected by a plastic film to be wrapped around the stack. The film is wrapped relatively tightly around the stack, which can already damage soft-fabricated products such as mineral wool boards. It is known to use suitable sheet material, such as cardboard of suitable strength, to protect the corners of the packages. The shrouds are fabricated, or alternatively, in use, they are bent into troughs of L-shaped cross-section so that they are positioned around the corner to be protected, the sides of the trough facing the sides of the stack. The lengths of the shields correspond to the height of the 20 stacks that are usually formed.

The problem with these known shields is that they remain in position on the side of the stack before the protective film is wound.

25

A solution to the problem of retention of the corner guard has been proposed in Finnish Patent Publication 88144. These strips are attached to the inside of the corner guard flange at an appropriate height when forming the product stack, and the portion protruding from the strip is positioned. between the product layers, whereby the corner guard locks into place. A disadvantage of this known structure can be considered to be a separate fastening piece, which has to be fastened at the right place in the corner guard when forming the packing stack. Working with separate fasteners complicates the work and excludes the mechanization of the packaging function.

2 111237 The angle guard according to the invention does not have these problems. This angular guard corresponds to a known angular guard, which is or can be made into a trough of L-shaped cross-section. The flanges forming the trough flanks 5 wrap around the protected corner of the formed stack and abut against the sides of the stack. At least one flange edge which is perpendicular to the corresponding flange edge of the adjacent flange is provided with a supporting tab which is or can be pivoted 90 ° to the respective flange. According to the invention, the dimension of the flanges in the direction of the bend indication therebetween is the thickness of the sheet-like objects stacked at least twice.

The angle guard according to the invention may or may be formed as a trough of L-shaped cross-section with an end wall at one end. The corner guard can be positioned at the corner of the package so that it hangs on this end wall on the corner 20 of the top plate in the stack. If the corner guard is shorter than the height of the stack to be stacked, several corner guards are mounted in succession in the stack height direction. The end wall of the corner guard is placed between the stack layer and its open end overlaps with the previous corner guard. The last corner protector will remain on its end wall hanging over the corner of the top plate of the stack.

The invention will be explained in more detail by means of the accompanying drawing, in which:

Figure 1 shows a blank of an angle guard according to an embodiment of the invention,

Figure 2 illustrates an angle guard blank according to another embodiment of the invention, and

Figure 3 illustrates the use situation of the angle guard according to the invention.

* 3 111237

Figure 1 shows a preferred embodiment of the invention in which the corner guard is formed of a bendable plate-like material. Suitable material for this purpose is cardboard. This material has a die-cut blank with the necessary bending pointers and cuts to provide angle protection.

The blank according to Fig. 1 includes, in its basic parts, two elongated flanges 1 and 1 'projecting in opposite directions from the bending point 7. Corresponding edges of the other end of the flanges, starting from the bending point 7, are indicated in the drawing by reference numerals 3 and 15 3'.

The short side 3 of the second flange 1 is provided with a bending point 2 with a bend pointing. These measures provide a tongue-and-groove protector with an L-shaped cross-section and a tongue ... 25 end wall formed by 2. In the application shown in Fig. 3, several of these angle guards are arranged in succession at the corners of the plate stack.

In the embodiment of Figure 2, the supporting tabs 30 are made at the respective edges 3 and, 3 'of each flange 1 and 1'. These support tabs 2 and 2 'are preferably dimensioned so that they are at least partially overlapping in the folded corner guard. The brackets are then secured to each other 35, whereby the bracket is provided with a stable structure.

Various alternative solutions may be used to secure the support tabs to one another, such as the locking tabs 4 cut into the support tabs shown in Figure 2.

111237 4

In the embodiment of Fig. 2, as an additional alternative, a locking solution 5 is shown, whereby the corner protectors can be locked together, if necessary, in the situation of Fig. 3. Apertures 5 and 5 'are made in the area of the flanges 1 and 1' adjacent the supporting tabs 2 and 2 '. Correspondingly, at the opposite short edges of the flanges are tabs 6 and 6 'which are transverse to the apertures 5 and 5'. 3, the tabs 6 and 6 'can be pushed through the openings 5 and 5' of the previous corner guard, whereby the guard locks into the previous guard. This alternative 15 may be useful to ensure that the top stacked corner guard is securely held in place during the pre-wrapping processing steps.

The angle guards can be manufactured to a standard size and nevertheless can be used to protect stacks of varying heights due to the overlapping position of the guards. The use of shields can be applied relatively simply as an ancillary function of the mechanical pinking devices.

25

The foregoing corner protectors are shown to be made from a sheet material cut from a sheet material by bending into its mode of use, but within the scope of the invention there is also an embodiment wherein the shields are preformed in their final form. These include, for example, shields made from cardboard using adhesive joints, * or alternatively plastic products made using, for example, injection molding technology. Because of their shape, the ready-made angle brackets can be packed in 35 small spaces, thus keeping storage and transportation costs low.

Claims (5)

111237 An angle guard for stacks of plate-like objects, comprising a pair of interconnecting flanges (1, 1 ') which are or pivotable in a substantially perpendicular position for positioning the guard around an angle to be protected, and at least one flange (1 or 1') or 3 '), which is perpendicular to the respective flange 10 of the adjacent flange in a perpendicular position, which is or can be turned 90 ° to the corresponding flange, characterized in that the flanges measure the bending point between them (2, 2'). 7) in the direction there is at least twice the thickness of the stackable plate-like objects. 15 Angle guard according to Claim 1, characterized in that the supporting tabs are at the respective edges of each flange (1, 1 '). Angle guard according to Claim 2, characterized in that the support tabs (2, 2 ') are dimensioned to overlap each other in a 90 ° bending position of the flanges (1, 1'). . 25 Angle guard according to Claim 2, characterized in that the support tabs are provided with an interlocking locking of the overlapping position, such as locking tabs (4, 4 1). Angle guard according to one of the preceding claims, characterized in that the flanges (1, 1 ') are provided with openings (5, 51) in the vicinity of the support tabs (2, 2') and at the opposite edge with corresponding tabs 6, 6 '). -35 to narrow each other. 111237