EP1862992B1 - Die for marking wood, in particular for marking logs or planks - Google Patents

Abstract

The depression (3) extends from one edge (8) of the plate to the other edge (9) of the plate, in a direction parallel to the fastening projections on the other side of the plate. Two wavy fastening projections run between the opposite edges. The depth of the depression in the body (2) is one half of the thickness in the remaining regions, which are without the depression. The depression occupies the entire area between the fastening projections.

Description

The invention relates to a plate for marking wood, in particular for marking logs or wooden planks, with the features of the preamble of claim 1.

Such platelets usually have a platelet-shaped base body on whose flat side such a marking can be applied, for example a number, a logo, a bar code, a transponder or the like. Such, for example from the GB 2075464 A , of the EP-A-1246152 , of the EP-A-1286325 , of the EP-A-1119493 or the DE 10196355 T1 known platelets are usually made of a plastic or synthetic resin. On one side, these plates are provided with protruding anchors for attachment to an impact hammer, and on the other side, the plates have fastening projections, with which they are hammered into the wood.

Such platelets are so strong and elastic that they can be damaged only with difficulty and also survive undamaged the loads associated with a timber transport. On the other hand, it is relatively easy to detach such platelets from the log and re-attach it to another log. It is therefore difficult to make a corresponding theft or unauthorized interchange of platelets and attachment of such platelets to other logs.

To prevent this, is in the DE 10196355 T1 proposed to provide the plate with grooves that serve as predetermined breaking points. When trying to remove such platelets unauthorized from the log, they break and can not be reused on the one hand, and on the other hand, the theft or theft attempt can be determined.

In the from the DE 10196355 T1 known platelets is the application, in particular the printing or punching, a logo or other information problematic because of the grooves. One solution could be to provide the grooves with a thin layer of plastic, which, however, does not provide a solution to the application of the mark with the hot stamping method. The hot stamping method requires platelets of a certain thickness that does not meet a thin plastic layer. The application of markings by means of the hot stamping method would indeed be in a wafer according to the EP-A-1119493 possible, but this plate is easy to swap and break-resistant to remove from the log, which brings the initially described disadvantages.

Another technological problem of the known grooved platelets is that in their manufacture the liquid plastic injected into the corresponding mold must be introduced through more than one injection point. This is due to the fact that the grooves in the mold complicate or inhibit the flow of the liquid plastic, so that the liquid plastic must be introduced on both sides of the respective groove. Would the plastic in such platelets only over a place injected, it could be distributed in shape with great difficulty and reach the farthest corners and the appropriate anchorages to be attached there either insufficiently or so that they are partly incomplete or at least of poor quality.

It is therefore an object of the present invention to provide a woodmarking tile of the type mentioned above which easily breaks when attempting to detach from the wood, which makes hot embossing of markings possible and in which the plastic can be injected during manufacture via only one injection point ,

This object is achieved by a wafer with the features of claim 1.

The platelet according to the invention has the advantage that on the one hand it has sufficient strength to allow it to beat in wood safely, without it breaking it. On the other hand, the countersinking on the second flat side opposite the surface between the fastening projections causes the chip to break when attempting to pull it out of the wood or to pry out, so that on the one hand a theft attempt can be discovered or prevented from the outset, since the potential Thief knows that he can not reuse the tile. Furthermore, markings can be impressed on the platelet according to the invention without problems in the hot stamping process. In addition, the shaping allows injection of the liquid plastic into the injection mold via only one injection point during manufacture. As a result, several forms can be connected to a supply line for liquid plastic in a simple manner so that a large number of platelets can be made simultaneously. In this case, the countersinking extends from one edge of the small plate to the other edge of the small plate in the direction which is basically parallel to the fastening projections, which leads to a slight breakage of the small plates at the transitional lines between the countersink and the remaining thicker regions of the small plate.

The measures listed in the dependent claims advantageous refinements and improvements of the claim 1 platelets are possible.

At least two fastening projections suitably extend between an edge of the flattening edge and the opposite edge in a wave-like manner.

The depth of the reduction in the body suitably corresponds to half or approximately half of its thickness in the other areas, whereby on the one hand when attempting to detach a slight breakage is achieved and on the other hand a sufficient strength is retained during driving.

The counterbore preferably extends on the first flat side opposite to the entire surface between the attachment protrusions. As a result, a sufficiently large uniform surface for applying the markings is provided.

Advantageously, notches are formed at the edges of the body at the locations of the ends of the lines where the thickness of the body of the plate changes, that is, at the transition lines between the countersink and the remaining areas of the plate. This facilitates breakage of the platelet in an attempt to remove the knocked-in platelet from a log.

V-shaped notches on the edges of the body in the vicinity of the edge anchors increase the mobility of these edge anchors and thereby allow attachment to different impact hammers with divergent dimensions.

In an advantageous embodiment of the invention extends in the region of the depression at least one line of punctiform depressions whose depth is less than or equal to the thickness of the body in the region of the depression, wherein the line extends from one edge of the depression to its second opposite edge , In this way, the breaking behavior of the plate can be adjusted and optimized in a simple manner, for example by varying the distances between the point-like depressions, by varying the diameter and / or depth of the depressions and by varying the number of lines of punctiform depressions and their lines. Nevertheless, the permeability in the mold for the liquid plastic remains adequately preserved, so that even in this embodiment, the injection mold can be acted upon by only one port with liquid plastic. The lines of point-like depressions ensure a sufficient flow of liquid plastic.

The lines of the at least one line of punctiform depressions can be varied and optimized according to requirements and specifications. Thus, at least one line of dot-like depressions may run in the axis of symmetry of the countersink and / or at least one line runs in the vicinity and / or parallel to at least one of the lines where the thickness of the body of the wafer changes. A further variation of the lines of depressions is preferably possible in that the punctiform depressions either to the first Flat side and / or to the second flat side are open, wherein on both sides open point-like depressions along a line each have a depth which is smaller than half the thickness of the body in the region of the depression. Finally, the point-like depressions can also have a depth which corresponds to the thickness of the body in the region of the depression.

Figur 1

eine perspektivische Ansicht auf die mit einer Senkung versehene Flachseite eines Plättchens gemäß einem ersten Ausführungsbeispiel der Erfindung,

Figur 2

eine perspektivische Ansicht der gegenüberliegenden zweiten Flachseite desselben in Figur 1 dargestellten Plättchens,

Figur 3

ein Plättchen in einer Ansicht gemäß Figur 1 mit einer Linie von punktartigen Vertiefungen in der Symmetrieachse der Senkung als zweites Ausführungsbeispiel der Erfindung,

Figur 4

eine entsprechende perspektivische Ansicht eines Plättchens mit zwei Linien von punktartigen Vertiefungen, die entlang und parallel zu den Linien verlaufen, an denen sich die Dicke des Körpers des Plättchens ändert, als drittes Ausführungsbeispiel der Erfindung,

Figur 5

eine entsprechende Ansicht eines Plättchens mit einer Linie von punktartigen Vertiefungen gemäß Figur 3 und zwei Linien von punktartigen Vertiefungen gemäß Figur 4 als viertes Ausführungsbeispiel der Erfindung,

Figur 6

eine Teildarstellung des in Figur 3 dargestellten zweiten Ausführungsbeispiels, bei der das Plättchen entlang der Linie von punktartigen Vertiefungen geschnitten ist und diese punktartigen Vertiefungen zur ersten Flachseite des Plättchens hin offen sind,

Figur 7

eine der Figur 6 entsprechende Darstellung eines Plättchens, bei der die punktartigen Vertiefungen zur zweiten Flachseite hin offen sind,

Figur 8

eine der Figur 6 entsprechende Darstellung, bei der entlang der Linie verlaufende punktartige Vertiefungen nach beiden Flachseiten hin offen sind, jedoch jeweils eine Tiefe aufweisen, die kleiner als die Hälfte der Dicke des Körpers im Bereich der Senkung ist,

Figur 9

eine weitere entsprechende Darstellung, bei der die punktartigen Vertiefungen als Durchgangslöcher ausgebildet sind, und

Figur 10

acht Formen zur Herstellung von Plättchen, die an einem gemeinsamen Kanal zur Zuführung von flüssigem Kunststoff angeschlossen sind.

Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description. Show it:

FIG. 1

a perspective view of the countersunk flat side of a plate according to a first embodiment of the invention,

FIG. 2

a perspective view of the opposite second flat side of the same in FIG. 1 represented platelets,

FIG. 3

a tile in a view according to FIG. 1 with a line of punctiform depressions in the axis of symmetry of the countersinking as a second embodiment of the invention,

FIG. 4

a corresponding perspective view of a plate with two lines of punctiform depressions extending along and parallel to the lines at which the thickness of the body of the plate changes, as a third embodiment of the invention,

FIG. 5

a corresponding view of a plate with a line of punctiform depressions according to figure 3 and two lines of dot-like pits according to FIG. 4 as a fourth embodiment of the invention,

FIG. 6

a partial representation of in FIG. 3 2, in which the wafer is cut along the line of dot-like depressions and these dot-like depressions are open to the first flat side of the wafer,

FIG. 7

one of the FIG. 6 corresponding representation of a small plate, in which the point-like depressions are open to the second flat side,

FIG. 8

one of the FIG. 6 corresponding illustration in which point-like indentations running along the line are open towards both flat sides, but each have a depth which is smaller than half the thickness of the body in the region of the countersink,

FIG. 9

a further corresponding representation in which the point-like depressions are formed as through holes, and

FIG. 10

eight molds for the production of platelets, which are connected to a common channel for supplying liquid plastic.

That in the Figures 1 and 2 Platelets 1 shown as a first exemplary embodiment consist of a plastic or synthetic resin material in one piece and consist essentially of a rectangular, platelet-shaped body 2. In FIG. 1 is shown as the first of the two flat sides of the top, carrying a marker, not shown, for marking wood, such as a number, a logo, a bar code, a transponder or the like. The central region has a countersink or counterbore 3, which extends from one longitudinal edge 8 to the opposite longitudinal edge 9. Towards the two transverse edges of the body 2, the countersink 3 is delimited by wave-shaped lines, from which the body 2 in each case again has a greater thickness up to the transverse edge. In the area of the countersink 3, the body 2 has substantially half the thickness in comparison to the other areas. The two wavy boundary lines between the countersink 3 and the two thicker edge regions of the body 2 terminate at the longitudinal edge 8 and at the longitudinal edge 9, respectively. Small indentations 6 are formed at these ends or end regions, which break along the undulating boundary lines when attempting to detach the in favor a log or in a wooden plank wrapped plate 1.

At the four corners of the body 2 protrude from the in FIG. 1 shown first flat side of edge anchors 5, so extend perpendicular to the first flat side. They serve for attachment or latching to a hammer for driving the small plate into the respective wood, as described in detail in the prior art mentioned above. In each case adjacent to the edge anchors 5 V-shaped notches 7 are formed in the body 2, which increase the elasticity or mobility of the edge anchors 5. These can thereby be locked with hammers of different diameters, as for example in the aforementioned EP-A-1119493 is described in more detail.

Two through holes 10 in the two thicker edge regions of the body 2 are used for threading the platelets 1 in platelet magazines. This is also described in detail in the prior art mentioned above.

At the in FIG. 2 shown second flat side or rear side of the body 2 are protruding, wave-shaped anchors 4 are formed. They each extend between the two longitudinal edges 8, 9. The area between the two anchors 4 corresponds to the surface of the countersink 3. This means that the two lines that limit the depression 3 with respect to the thicker edge regions of the body 2, directly parallel to extend the anchors 4, in the area between these anchors 4. The anchors 4 themselves are located on the thicker areas of the body. 2

After the latching of such a plate 2 by means of the edge anchors 5 on an impact hammer, the plate 1 is hammered by means of this impact hammer into the wood by the anchors 4 penetrate into the wood. Both the edge anchors 5 and the anchors 4 are arranged on the two thicker edge regions of the body 2, so that damage to the plate 1 when driving into the wood is not to be expected. When attempting to detach or break out of the wood, however, torsions and distortions inevitably occur, which lead to breakage of the plate 1 or body 2 along the wave-shaped edge boundaries of the countersink 3.

In the in the FIGS. 3 to 9 illustrated embodiments of the plate 1 are the same or equivalent areas and elements provided with the same reference numerals and not described again. In the execution according to FIG. 3 A line 11 of point-like recesses extends along the central axis of symmetry in the counterbore 3 from a wavy edge line 17 of the counterbore 3 to the opposite edge line 18 FIG. 4 Two lines 12, 13 extend from point-like recesses along the edge lines 17, 18 and parallel to them in the countersink 3. They thus extend from one longitudinal edge 8 to the other longitudinal edge 9.

Finally, according to FIG. 5 both the line 11 according to FIG. 3 as well as the lines 12, 13 according to FIG. 4 provided by point-like depressions in the countersink 3 of the body 2 of the plate 1. These point depressions form predetermined breaking points and facilitate the breaking of the plate 1 when attempting to detach from a piece of wood into which the plate has been hammered. In particular, the lines 12, 13 of point-like depressions facilitate breaking along the edge lines 17, 18 of the countersink 3, which in any case function as predetermined breaking lines.

The respective distance between the individual point-like depressions, their depth and their diameter can be optimized and adapted as parameters for the desired or required fracture behavior of the plate.

In the FIGS. 6 to 9 Different embodiments of the point-like depressions are explained with reference to the running in the axis of symmetry of the reduction 3 line 11. The same naturally also applies to the punctiform depressions of lines 12 and 13. According to FIG. 6 Point-like depressions 14 are shown, which are open to the first flat side or to the top of the wafer 1 and have a distance d between them. In FIG. 7 Point-like depressions 15 are shown, which are opposite to the second Flat side are open. In FIG. 8 is a superimposed double row of punctiform depressions 14 and 15, the depth of which is less than half the thickness of the body 2 in the region of the counterbore 3, so that superposed depressions 14, 15 are separated from each other by a bottom. Finally, in FIG. 9 point-like recesses 16 shown, the depth of which corresponds to the thickness of the body 2 in the region of the counterbore 3, so that they are through holes.

Further variations of the shape and the course of the point-like depressions are of course possible, wherein the cross section of the point-like depressions may also differ from the circular surface shape, that is, the point-like depressions may also be formed oval or polygonal.

In FIG. 10 schematically molds 19 for injection molding of the platelets 1 are shown. From a central channel 20, the liquid plastic is distributed via side channels 21 and then passes in each case via a feed opening 22 in the individual molds 19. Here, as already explained, only one feed opening 22 is required. Of course, further side channels 21 with connected molds 19 can be provided on the central channel 20, so that a plurality of platelets can be produced simultaneously, whereby the number of channels can be reduced overall by the respective one feed opening 22 to form 19.

Claims (13)

1. Tag for marking wood, in particular for marking tree trunks or planks, which comprises a body (2) to which a mark can be attached and which is provided on a first of its two flat sides with projecting edge anchors (5) for attaching the tag (1) to a hammer for driving the tag (1) into the wood and which has on the other, second, flat side mounting projections (4) for driving into the wood, wherein the body (2) of the tag (1) has, on a surface of the first flat side which is opposite a surface between the mounting projections (4) on the second flat side, a depression (3), characterised in that the depression (3) extends from an edge (8) of the tag to another edge (9) of the tag in the direction which is basically parallel to the mounting projections (4).
2. Tag according to claim 1, characterised in that at least two mounting projections (4) extend between one edge (8) of the tag and the opposite edge (9) of the tag in a wavy line.
3. Tag according to any of the preceding claims, characterised in that the depth of the depression (3) in the body (2) corresponds at least approximately to half of its depth in the remaining regions without any depression.
4. Tag according to any of the preceding claims, characterised in that the depression (3) extends on the first flat side opposite the entire surface between the mounting projections (4).
5. Tag according to any of the preceding claims, characterised in that the edges of the body (2) are provided with notches (6) at the points of the ends of the lines where the thickness of the body (2) of the tag (1) changes.
6. Tag according to any of the preceding claims, characterised in that V-shaped notches (7) are provided at the edges of the body (2) near the edge anchors (5).
7. Tag according to any of the preceding claims, characterised in that at least one line (11, 12, 13) of dot-like indentations (14, 15, 16) having a depth smaller than or equal to the thickness of the body (2) in the region of the depression (3) extends in the region of the depression (3), the line (11, 12, 13) extending from one edge (8, 17) of the depression (3) to its second, opposite edge (9, 18).
8. Tag according to claim 7, characterised in that at least one line (11) of dot-like indentations (14, 15, 16) extends in the axis of symmetry of the depression (3).
9. Tag according to claim 7 or 8, characterised in that at least one line (12, 13) of dot-like indentations (14, 15, 16) extends near and/or parallel to at least one of the lines (17, 18) where the thickness of the body (2) of the tag (1) changes.
10. Tag according to any of claims 7 to 9, characterised in that the dot-like indentations (14) are open only towards the first flat side along at least one of the lines (11, 12, 13).
11. Tag according to any of claims 7 to 10, characterised in that the dot-like indentations (15) are open only towards the second flat side along at least one of the lines (11, 12, 13).
12. Tag according to any of claims 7 to 11, characterised in that the dot-like indentations (14) are open towards the first flat side along at least one of the lines (11, 12, 13) and have a depth which is less than half of the depth of the body (2) in the region of the depression (3), and in that the dot-like indentations (15) running along the same line are open towards the second flat side and likewise have a depth which is less than half of the depth of the body (2) in the region of the depression (3).
13. Tag according to any of claims 7 to 12, characterised in that the dot-like indentations (16) have along at least one line a depth corresponding to the depth of the body (2) in the region of the depression (3).

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