Method for manufacturing side walls for drawers

Abstract

1. A method for manufacturing a side wall (1) for a drawer, the side wall (1) having at least one holding profile (2) at least partially made of a metal material and at least one hollow profile (3) at least partially made of a metal material, wherein the at least one holding profile (2) and the at least one hollow profile (3) are welded together by means of at least one laser weld joint (5), wherein the at least one holding profile (2) and / or the at least one hollow profile (3) have, prior to welding, at least one embossment (6) in and / or around the area of ​​the at least one laser weld joint (5) for enhancing energy absorption of laser light (7) of at least one laser (8) for forming the at least one laser weld joint, and wherein the at least one embossment (6) is at least partially melted during welding.

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a side wall for a drawer, the side wall having at least one retaining profile at least partially made of a metallic material and at least one hollow profile at least partially made of a metallic material, wherein the at least one retaining profile and the at least one hollow profile are welded to one another using at least one laser weld joint. The present invention also relates to a side wall for a drawer, the side wall having at least one retaining profile and at least one hollow profile, the at least one retaining profile and the at least one hollow profile being at least partially made of a metallic material and welded to one another using at least one laser weld joint. The present invention also relates to a retaining profile for such a side wall. The present invention also relates to an assembly consisting of at least one laser and at least one such side wall.

[0002] The side walls for drawers known from the prior art have a metal holding profile and a hollow profile, which are joined together by a laser via a laser welded joint.

[0003] Disadvantages of the prior art include the following: In order to achieve a reliable and proper laser welded connection, while simultaneously maintaining the function of the holding profile as a container rail, the laser welded connection must be located deep within the holding profile. This location for the laser welded connection is difficult for the laser to access, especially in the case of narrow holding profiles, due to their structural dimensions. Therefore, the laser must be positioned outside the holding profile, away from the desired laser welded connection, which means that the laser light must be emitted at an unfavorable angle and from a large distance toward the materials to be welded. Due to the unfavorable angle, a significant portion of the laser light emitted for the laser welded connection is reflected, at least temporarily, during the welding process, resulting in unused laser intensity and energy loss and undesired heating (possibly accompanied by deformation) of areas of the side wall not intended for the laser welded connection. An inadequate laser welded connection shortens the service life of the drawer and can lead to undesired separation of the holding profile from the hollow profile during use of the side wall. It is also important that the laser welded connection has a satisfactory appearance. This is because otherwise the impression would be given that the side walls cannot be used safely when a load is applied.

[0004] Therefore, the technical problem of the present invention is to provide a method for manufacturing a side wall, a side wall and a holding profile, and an assembly that are improved over the prior art, in which the disadvantages of the prior art are at least partially eliminated and that are distinguished in particular by an improved quality of the laser welded joint, which is accompanied by a reduced laser power required for the laser welded joint and / or an increased strength of the side wall.

[0005] This problem is solved by the features of claim 1.

[0006] Therefore, according to the present invention, it is specified that at least one holding profile and / or at least one hollow profile has, before welding, at least one embossed portion in and / or around the area of ​​the at least one laser welded joint for enhancing the energy absorption of the laser light of at least one laser for forming the at least one laser welded joint, and that the at least one embossed portion is at least partially melted during welding.

[0007] This makes it possible for the first time that the side walls, in particular the at least one retaining profile and / or the at least one hollow profile, can be configured particularly narrow, which allows for particularly aesthetically pleasing drawers to be obtained with increased storage space.

[0008] Furthermore, the at least one laser welded joint can be arranged particularly deep in the side wall or in the at least one holding profile, allowing the side wall to be particularly flexibly adapted to special requirements. Limiting factors for the welding process, such as proximity to the at least one laser or an angle of incidence of the laser light at the weld point that is approximately perpendicular or perpendicular, can be significantly reduced by the at least one embossment and can be comfortably adapted by the specific shape or geometry of the at least one embossment.

[0009] In the prior art, the at least one laser must be positioned very close to the sidewall and / or operated with a high laser power. Otherwise, the energy input required for melting the material cannot be generated due to reflections. This situation can lead to contamination of the delicate and expensive optics of the at least one laser, and the bundle of laser beams required for focal formation is particularly complex. In the present invention, the spacing and / or laser power of the at least one laser can be optimally adapted, and the at least one laser can be protected against contamination.

[0010] The at least one embossment ensures that the laser beam of the at least one laser can impinge on the side wall for welding at a substantially right angle in virtually any structural configuration. The at least one embossment strongly reduces a large proportion of the reflection of the laser beam emitted for welding, and more effectively prevents heating away from the at least one laser welded joint.

[0011] By increasing the energy absorption at the desired weld location, energy from at least one laser can be saved and damage due to insufficient strength of the laser weld joint can be avoided.

[0012] Furthermore, the side walls can be subjected to high loads in the region of at least one laser welded joint, which has the positive effect of allowing relatively high loads on the front or rear drawer walls, which can be advantageous, for example, when the tilt adjustment of the panels is transmitted via a rail bar, and the fields of use are widely distributed, such as for dimension optimization.

[0013] Generally, the at least one embossment can be completely melted during the laser weld bond, but the at least one embossment is preferably only partially melted, in other words, an edge area of ​​the embossment can remain around the at least one laser weld bond, which allows, for example, a reduced precision in directing the at least one laser and / or the elimination of undesired reflection effects in the edge area of ​​the embossment.

[0014] As mentioned at the outset, patent protection is also sought for a side wall for a drawer, which has at least one retaining profile and at least one hollow profile, which are at least partially made of a metal material and are welded to one another by means of at least one laser weld seam, and in which the at least one retaining profile and / or the at least one hollow profile has at least one embossment in the region of and / or around the at least one laser welded joint for increasing the energy absorption of the laser light of the at least one laser for forming the at least one laser welded joint.

[0015] The at least one embossment can be used, for example, as an indicator, preferably automatically recorded and / or photographed via a camera system, for the intended position of the at least one laser welded joint.

[0016] The number of embossments and / or the positioning of the at least one embossment can be adapted in relation to parameters of the sidewall such as load bearing capacity, sizing, etc.

[0017] The at least one retaining profile may typically be provided in the form of a container rail which can be used to connect the side wall to the drawer bottom.

[0018] The at least one hollow profile may be provided in the form of a side wall cover, which can be used to at least partially position at least one retaining device, typically for the drawer back wall or the drawer front wall, inside the at least one hollow profile.

[0019] The side walls are particularly preferably drawer side walls, container side walls or the like. Preferably, the drawer comprises one front drawer wall, one back drawer wall, one drawer bottom and two such side walls, and is provided with retaining devices for fixing the front and / or back drawer wall to the side walls.

[0020] Advantageously, in a preparatory method step at least one holding profile and / or at least one hollow profile is prepared, preferably by rolling and / or bending.

[0021] As mentioned at the beginning, patent protection is also sought for such holding profiles for side walls, which are at least partially made of metal material, characterized in that the holding profile has at least one embossment, in particular on the inside facing the interior space of the holding profile and / or on at least one side web that faces vertically in the used state of the holding profile, for increasing the energy absorption of laser light from at least one laser for forming at least one laser welded connection with at least one hollow profile.

[0022] For example, the embossments may be arranged along the side webs and / or on the inner side webs and / or on both side webs of the holding profile and / or hollow profile, preferably oriented parallel to each other.

[0023] As mentioned at the outset, patent protection is also sought for an assembly consisting of at least one laser and at least one such side wall, in particular in such a way that the laser emission aperture of the at least one laser for producing at least one laser welded joint is oriented at an acute angle, preferably 15° to 30°, particularly preferably 20° to 25°, to the vertical direction of the at least one side wall in the used state, so that the laser light can be emitted, in particular directly, essentially perpendicular to one side of the at least one embossment.

[0024] This ensures the positive property that at least one laser does not need to be operated close to the side walls and that no specific material properties different from those commonly used in the furniture industry need to be provided to increase the energy input at the welding point.

[0025] In particular, with thin side walls or holding profiles, a riveting connection is not possible, in which case a disk laser, for example, can be used to weld the holding profile.

[0026] The distance between the laser and the side wall during welding is preferably in the range of 5 cm to 50 cm, particularly preferably 10 cm to 40 cm, and even more preferably 15 cm to 25 cm.

[0027] Advantageous embodiments of the invention are defined in the dependent claims.

[0028] It is particularly preferred that, prior to welding, at least one embossing is arranged on at least one holding profile and / or at least one hollow profile in the region of at least one laser welded joint and / or around this region to enhance energy absorption of the laser light.

[0029] Since the at least one embossment is a structural element of the sidewall, there is no need to modify the at least one laser, such as the focal width, intensity, pulse duration, emission duration, or the like. Various lasers with different dimensions and characteristics can be used.

[0030] According to one advantageous configuration of the present invention, it is specified that at least one embossed portion is arranged on the inner side facing the inner space of at least one holding profile, preferably on at least one side web of at least one holding profile that faces vertically in the use state of the side wall.

[0031] With a laser welded joint facing the outer chamber, particularly advantageous integration into the production cycle can be ensured, while accessibility to the at least one laser is hardly a problem. With at least one embossing in the inner chamber, the problem of accessibility to the at least one laser can also be overcome without complex structures (such as mirrors or segmented profiles).

[0032] Advantageously, at least two, preferably exactly three, embossments are provided and / or at least one embossment is provided as follows: - in the form of grooves, preferably corrugated grooves, preferably with at least two, particularly preferably with at least five, and most particularly preferably with at least ten ridges; and / or - have a substantially rectangular cross section and / or be locally arranged; and / or - along the longitudinal direction of the side wall in the region of one free end of at least one retaining profile, preferably spaced apart and / or centrally at intervals of at least five times the material thickness of the at least one retaining profile; and / or - at a distance of at least 10 times the material thickness of the retaining profile from one free end in a direction perpendicular to the longitudinal direction and / or located in the first third of the way along the side web of at least one retaining profile, starting from the upper side of at least one retaining profile arranged in the use state of the side wall; and / or - in the used state of the side wall, arranged on one side web of at least one retaining profile and / or at least one hollow profile; and / or - to have a depth of at least 1 / 5 and / or at most 1 / 2 of the material thickness of at least one retaining profile; and / or - on the side of the material facing away from the at least one embossment, to form a contact area, preferably a substantially planar contact area, for the at least one hollow profile and / or the at least one retaining profile, It is specified that it is formed into at least one retaining profile and / or at least one hollow profile.

[0033] The properties of the at least one embossment, such as its depth, geometry, shape and / or positioning on the side wall, can be individually adapted to the givens and / or requirements of the side wall. The material thickness, if it varies, can be defined, for example, by an average material thickness or a maximum material thickness. A free end generally exists in the vertical direction (e.g., as the maximum distance along this degree of freedom) and in the longitudinal direction for both the at least one retaining profile and the at least one hollow profile.

[0034] In one embodiment that has proven reasonable, each of the ridges has two sides that preferably extend towards each other at an acute angle, the sides form an angle with respect to one another in the range of 70° to 110°, preferably substantially at right angles; and / or - one of the two side surfaces is oriented relative to the at least one retaining profile and / or at least one hollow profile in such a way that a perpendicular to the side surface extends from the side wall without contact between the two side webs of the at least one retaining profile and / or at least one hollow profile; and / or - the side surfaces have a side height in the range of 0.05 mm to 0.2 mm, preferably 0.1 mm to 0.15 mm, and / or at least one of the side surfaces has a side length in the range of 0.1 mm to 0.25 mm, preferably 0.15 mm to 0.2 mm, and / or - the ridges have a side angle of 15° to 40°, preferably 25° to 30°, relative to the side web of at least one retaining profile and / or at least one hollow profile, and / or two adjacent ridges are spaced apart from each other by a distance of 0.2 mm to 0.5 mm, preferably 0.3 mm to 0.4 mm.

[0035] The properties of the at least one embossment, such as its geometric shape and / or lateral orientation, can be determined by the laser beam of the at least one laser and / or by dimensioning the side wall elements, which allows the manufacturing process of the side wall to be configured particularly efficiently.

[0036] According to one advantageous embodiment of the invention, it is specified that at least one laser welded joint is formed in the form of a laser spot welded joint or a laser line welded joint.

[0037] Point welds which extend at least partially within the lateral extent of at least one embossment are particularly suitable.

[0038] In one embodiment that has proven advantageous, at least one covering layer, preferably a plastic covering layer, is applied to at least one holding profile and / or at least one hollow profile, preferably in the region of at least one embossment, and the at least one covering layer is preferably removed and / or partially removed by at least one laser before or during welding.

[0039] The at least one coating layer may be provided, for example, for a special visual appearance of the side wall, the at least one coating layer may be undesirable for the at least one laser welded joint, and / or may enhance the absorption of laser light at least temporarily at the start of welding, for example by virtue of its composition and / or coloring.

[0040] Vaporizing or scraping off at least one coating layer with at least one laser prior to welding can reduce or eliminate a significant amount of materials that are harmful to welding, such as organic substrates and / or harmful materials.

[0041] In one advantageous variant, the laser emission opening of at least one laser is directed at an acute angle, preferably between 15° and 30°, particularly preferably between 20° and 25°, relative to the vertical direction in the used state of the side wall in order to form at least one laser welded joint, and it is specified that the laser light is preferably emitted substantially perpendicular to one of the possibly present two side surfaces of at least one embossed portion.

[0042] It is particularly preferred to provide at least one holding device, at least partially made of a metal material, for connecting the side wall to the drawer rear wall or the drawer front wall, and to weld the at least one holding device to the at least one holding profile using at least one laser weld seam, and to form a laser deformation separate from the at least one laser weld seam by irradiating laser light in the area of ​​the at least one laser weld seam.

[0043] This allows for additional laser processing to be carried out in the weld area, which on the one hand makes the side wall more stable and on the other hand makes it possible to prevent the at least one holding device from tearing off.

[0044] In other words, during the welding process for fastening the at least one holding device, heat is additionally applied to the at least one holding profile using at least one laser, which causes the at least one holding profile to easily deform and bend upward, i.e., generates stresses in the at least one holding profile that cause the desired, suitable deformation.

[0045] In certain material qualities, structural changes and therefore hardening processes can also be carried out.

[0046] The additional laser treatment allows for a stronger load to be applied to the at least one holding profile, which allows for a greater load on the drawer back wall or the drawer front wall connected to the at least one holding device, which is advantageous, for example, when the tilt adjustment of the drawer front wall is realized by a handrail bar.

[0047] In one preferred embodiment of the present invention, - the majority of the at least one laser welded seam is located on the at least one holding profile at a point where the at least one holding device and the at least one holding profile come into contact with each other, and / or - a major portion of the at least one laser deformation is arranged on the at least one holding profile at a location where the at least one holding device and the at least one holding profile are not in contact with each other, and / or - at least one laser deformation is arranged on at least one holding profile offset with respect to at least one laser weld seam, and / or - arranging the at least one laser deformation and the at least one laser weld seam relative to one another such that the laser deformation and the at least one laser weld seam have at least one intersection and / or such that the at least one laser deformation extends transversely to the longitudinal direction of the side wall over a width greater than the at least one laser weld seam; and / or - forming at least one laser deformation at least partially in the form of a linear zigzag; and / or - at least one laser weld seam and at least one laser deformation are produced by the same laser, and the focus of the laser is adjusted, preferably widened, after the production of the at least one laser weld seam and before the production of the at least one laser deformation. It has been identified that:

[0048] Generally, the same laser can be used for both the at least one laser welded joint and the at least one laser welded seam, with the laser processing the sidewall in sequential order. Generally, it is also possible to use at least partially different lasers or multiple lasers of the same type for the individual heat treatments, e.g., for varying positions along the sidewall.

[0049] It is particularly preferred that the at least one laser welded seam and the at least one laser deformed portion are formed at least partially linearly, and that the at least one laser welded seam and the laser deformed portion have different line widths, and preferably the laser deformed portion has a line width greater than the at least one laser welded seam.

[0050] Mutatis mutandis, the side wall may have the structural or constructional features of the method claims, and features of the side wall device claims are likewise applicable in the method claims.

[0051] Further details and advantages of the invention will be explained in more detail below with reference to the drawings and to the exemplary embodiments shown in the drawings. [Brief explanation of the drawings]

[0052] [Figure 1a] FIG. 10 is a perspective view of a side wall according to a particularly preferred embodiment, showing an embossed portion of a holding profile in one viewing direction. [Figure 1b] FIG. 10 is a perspective view showing a side wall according to a particularly preferred embodiment, in which the embossed portion of the holding profile is seen from a different viewing direction. [Figure 1c] 1b shows an embodiment of a sidewall according to FIG. 1a, showing an enlarged perspective view of the embossed area in greater detail; FIG. [Figure 1d] 1b shows a perspective view of the sidewall according to one embodiment of FIG. 1a, showing an enlarged and more detailed view of the embossed area; FIG. [Figure 2]It is a perspective view showing the side wall holding member according to the embodiment shown in FIG. 1a separated from the hollow member. [Figure 3a] It is a side view showing the side wall according to the embodiment shown in FIG. 1a, a cross-sectional view showing an enlarged area of the embossed portion of the side wall, and a cross-sectional view showing a further enlarged and detailed area of the embossed portion. [Figure 3b] It is a side view showing the side wall according to the embodiment shown in FIG. 1a, a cross-sectional view showing an enlarged area of the embossed portion of the side wall, and a cross-sectional view showing a further enlarged and detailed area of the embossed portion. [Figure 3c] It is a side view showing the side wall according to the embodiment shown in FIG. 3a, a cross-sectional view showing an enlarged state of irradiating the embossed portion with a laser to form a laser welding joint, and a cross-sectional view showing a further enlarged and detailed part thereof. [Figure 3d] It is a cross-sectional view showing an enlarged embossed portion shown in FIG. 3c and a cross-sectional view showing a further enlarged and detailed part thereof. [Figure 4a] It is a view showing the side wall according to another preferred embodiment as seen from below. [Figure 4b] It is a view showing in detail an enlarged area of the laser welding seam of the side wall according to another preferred embodiment. [Figure 4c] It is a view showing in detail an enlarged area of the laser welding seam of the side wall according to another preferred embodiment. [Figure 4d] It is a view showing in detail an enlarged area of the laser welding seam of the side wall according to another preferred embodiment.

[0053] FIG. 1a shows a side wall 1 for drawing, which side wall 1 has a holding member 2 in the form of a container rail for connecting the side wall to the drawing bottom, and a hollow member 3 in the form of a side wall cover for arranging a holding device 4 for the drawing back wall and the drawing front wall inside the hollow member 3 (see FIGS. 4b to 4d).

[0054] The holding profile 2 and the hollow profile 3 are prepared at least partially comprising a metallic material, so that they can be welded to one another using a laser weld joint 5. In order to improve the quality of the laser weld joint 5 (see FIGS. 3a to 3d), the holding profile 2 has a number of embossments 6 in the area of ​​the laser weld joint 5 to be formed in the side wall 1 and around this area, which enhance the energy absorption of the laser light 7 of the laser 8 for forming the laser weld joint 5.

[0055] The embossments 6 are arranged on the holding profile 2. Alternatively or additionally, the embossments 6 may also be arranged on the hollow profile 3.

[0056] Figure 1b differs from Figure 1a simply in that the side wall 1 is viewed from a different viewing direction, and as can be seen in Figure 1b, there are exactly three embossments 6. In general, the number of embossments 6 can be any number and they may, for example, be arranged in the holding section 2 (or hollow section 3) so that further embossments 6 are positioned opposite each other.

[0057] Figure 1c shows one free end of the retaining profile 2 in the longitudinal direction 15 of the side wall 1 and both free ends of the retaining profile 2 in the vertical direction 11 of the side wall 1, which are formed by the upper side 18 of the retaining profile 2 arranged in the use state 17 of the side wall and the lower edge located on the opposite side.

[0058] Along the longitudinal direction 15 of the side wall 1, the embossments 6 are arranged in the region of the free ends at a distance of at least five times the material thickness 16 of the retaining profile 2 and in the centre of the retaining profile 2 (covered in the drawing). In the direction perpendicular to the longitudinal direction 15, the embossments 6 are arranged in the first third of the way along one side web 12 of the retaining profile 2, starting from an upper side 18 of the retaining profile 2 arranged in the used state of the side wall 1, at a distance of at least ten times the material thickness 16 of the retaining profile 2 from a lower edge of the side web 12 of the retaining profile 2 formed in the used state 17, which is formed in the used state 17 of the side web 12 of the retaining profile 2.

[0059] The holding profile 2 has another side web 12 oriented parallel to the side web 12. The embossment 6 is arranged in the vertical direction 11 closer to the upper side 18 of the holding profile than to the lower edge. Due to the structural dimensions of the side walls, it would therefore be complex and difficult to produce the laser welded joint 5 without the embossment 6.

[0060] The embossed portion 6 is formed in the holding profile 2 (and possibly also in the hollow profile 3) so that the embossed portion 6 has a rectangular cross section with rounded corners, is arranged in a localized area of ​​the side wall, and is positioned on the side web 12 of the holding profile 2 in the use state 17 of the side wall 1.

[0061] 1d shows an enlarged view of a portion of the side wall 1 in the region of the embossment 6. The embossment 6 is arranged on the inner side 10 of the holding profile 2, facing the inner space 9 of the holding profile 2, on a side web 12 which faces in the vertical direction 11 in the use state 17 of the side wall 1.

[0062] Figure 2 shows a particularly preferred embodiment of a holding profile 2 for a side wall 1, in which the holding profile 2 is made of metal, and the embossed portions 6 are arranged on the inner side 10 facing the inner space 9 of the holding profile 2 and on the side webs 12 facing the vertical direction 11 in the used state of the holding profile 2, which allows for increased energy absorption of the laser light 7 of the laser 8 for forming the laser welded joint 5 with the hollow profile 3.

[0063] The holding profile 2 has a transverse web 28, which is oriented so as to be perpendicular to the side webs 12 of the holding profile 2 and so as to be perpendicular to the side webs 12 of the hollow profile 3 when assembled to the hollow profile 3.

[0064] In FIG. 3 a a side view of the side wall 1 is shown together with a cross section of the side wall and an enlarged detail of the area of ​​the embossed portion 6 or the laser welded joint 5 .

[0065] The laser welded joint 5 is shown diagrammatically and, for the sake of clarity, the embossed portion 6 is shown intact in the cross section, which is generally not present in the region of the laser welded joint 5 due to the melting process of the material.

[0066] The laser welded connection 5 as a material-tight connection can be combined with other fixed connections between the holding profile 2 and the hollow profile 3. For example, screw connections, nail connections, clamp connections, form-lock connections or similar connection forms are conceivable.

[0067] In the use position 17 the side wall 1 is configured for connection to another component of a drawer.

[0068] 3b differs from FIG. 3a only in that the side wall 1 is rotated by 180°. Such an orientation can be used for assembling the side wall 1, whereby the laser weld joint 5 is formed by irradiating the laser beam 7 from above onto the embossment 6 positioned in the inner chamber 9 and between the side webs 12. However, the orientation of the side wall 1 during the manufacturing process is generally arbitrary.

[0069] The embossed portion 6 has a depth of 1 / 5 to 1 / 2 of the material thickness 16 of the holding shape member 2 .

[0070] The embossing 6 is provided in the form of a wave-shaped groove 13 which has a number of ridges 14 .

[0071] On the side of the material of the holding profile 2 opposite the embossed portion 6, the embossed portion 6 forms a contact area 20 which can be used for line contact or surface contact between the side web 12 of the holding profile 2 and the side web of the hollow profile 3 for the purpose of a defined contact for the laser welded joint 5.

[0072] The laser welded joint 5 may be provided, for example, in the form of a laser spot welded seam or a laser line welded seam.

[0073] Figure 3c shows an assembly consisting of lasers 8 and side walls 1, where the lasers 8 (the number of which is generally arbitrary) have laser emission apertures 23 oriented at an acute angle of 20° to 25° with respect to the vertical direction 11 to form the laser welded joint 5, so that the laser light 7 of the laser 8 can be emitted directly perpendicular to the side surface 21 of the embossed portion 6 (see Figure 3d).

[0074] A method for producing the side wall 1 can be exemplified as follows: a metal holding profile 2 and a metal hollow profile 3 are prepared, and embossments 6 are arranged on the holding profile 2 in the region of and around the laser weld joint 5 before the welding process in order to enhance the energy absorption of the laser light 7, whereby the holding profile 2 and the hollow profile 3 are then welded to one another via the embossments 6 using the laser weld joint 5, with at least the holding profile 2 having the embossments 6 before welding and the embossments 6 being at least partially melted during welding.

[0075] The holding profile 2 or the hollow profile 3 may be coated in the area of ​​the embossed portion 6 with a coating layer 22 in the form of a plastic coating layer, which is at least partially removed by the laser 8 before or during welding.

[0076] The laser 8 has its laser emission opening 23 already directed at an acute angle to the inside 10 of the holding profile 2 in order to form the laser welded joint 5, and the laser light 7 is emitted perpendicular to one of the two side surfaces 21 of the embossed portion 6 formed by the embossed portion 6 in order to melt the metal material.

[0077] 3d shows an enlarged view of the embossment 6 for the laser welded joint 5, and as can be seen from this figure, each of the raised portions 14 of the groove 13 has two side surfaces 21 that extend at an acute angle towards each other. The manufacturing-induced radii in the transition areas of the side surfaces 21 are generally arbitrary.

[0078] The sides 21 of the grooves 13 are at right angles to one another, and the ridges 14 of the embossment 6 have a side angle 31 of 28° relative to the side webs 12 of the holding profile 2. The ridges 14 have oblique sides 21, and two adjacent ridges 14 are spaced apart by 0.36 mm.

[0079] The two side surfaces 21 form a side height 29 of 0.125 mm. The two side surfaces 21 of the raised portion 14 have different side lengths 30, with one side surface 21 having a side length 30 of 0.17 mm.

[0080] As can be seen from Figure 3c, one of the two side surfaces 21 is oriented relative to the side web 12 of the holding profile 2 so that a perpendicular to this side surface 21 extends from the side wall 1 without contact between the two side webs 12 of the holding profile 2, thereby allowing the laser welded joint 5 to be formed with reduced reflection through the embossed portion 6.

[0081] In a similar structural configuration, the embossed portion 6 may be provided on the hollow profile 3 .

[0082] In Figure 4a the retaining profile 2 of the side wall 1 is shown from below in the direction of the upper side 18 as a plate-like component of the retaining profile 2. The enclosed area of ​​one free end of the retaining profile 2 is shown in Figures 4b to 4d in several embodiments which connect or increase the stability of the retaining device 4.

[0083] As shown in Figure 4b, a retaining device 4 for connecting the side wall 1 to the drawer back wall or the drawer front wall made of metal material is provided and arranged on the retaining profile 2. The retaining device 4 is welded to the retaining profile 2 by means of a laser weld seam 24.

[0084] As shown in FIG. 4c, the connection between the holding profile 2 and the holding device 4 in the area of ​​the laser weld seam 24 has a laser deformation 25 formed by the laser beam 7 separate from the laser weld seam 24.

[0085] The laser deformation section 25 is mostly arranged in the holding section 2 at a location where the holding device 4 and the holding section 2 are formed without coming into contact with each other.

[0086] The laser welded seam 24 and the laser deformed portion 25 are formed in a line shape, and have different line widths (during the irradiation of the laser light 7 and after the welding process is completed). The laser deformed portion 25 has a line width larger than that of the laser welded seam 24.

[0087] The laser deformation 25 extends transversely to the longitudinal direction 15 of the side wall 1 over a greater width than the laser weld seam 24 .

[0088] The laser deformed portion 25 is formed linearly in the form of a zigzag 27 .

[0089] The laser deformation 25 and the laser welded seam 24 have a common intersection 26 .

[0090] As shown in Fig. 4d, a further laser deformation 25 is provided which is offset relative to the laser weld seam 24 in the holding profile 2. This laser deformation 25 allows a hardening process and strength increase during irradiation with the laser light 7.

[0091] In the manufacturing process of the side wall 1, the holding device 4 prepared by metal and the holding profile 2 can be welded using one laser welding seam 24 or using multiple laser welding seams 24 that are spatially separate or connected to each other, and in the area of ​​the laser welding seam 24, a laser deformation portion 25 separate from the laser welding seam 24 is formed by irradiation with laser light 7.

[0092] Although the laser weld seam 24, the laser deformation 25 and the laser welded joint 5 are formed by the same laser 8, this is generally not necessary. For example, it is also possible to form only the laser weld seam 24 and the laser deformation 25 by the laser 8. After forming the laser weld seam 24 and before forming the laser deformation 25, the focus of the laser 8 is adjusted in this embodiment in the form of a focus widening.

Claims

1. 1. A method for manufacturing a side wall (1) for a drawer, which has at least one holding profile (2) at least partially made of a metallic material and at least one hollow profile (3) at least partially made of a metallic material, wherein the at least one holding profile (2) and the at least one hollow profile (3) are welded to one another by means of at least one laser welded joint (5), 1. The method of claim 1, wherein the at least one holding section (2) and / or the at least one hollow section (3) have, prior to welding, at least one embossment (6) in and / or around the area of ​​the at least one laser welded joint (5) for enhancing energy absorption of the laser light (7) of the at least one laser (8) for forming the at least one laser welded joint (5), and wherein the at least one embossment (6) is at least partially melted during the welding.

2. 2. The method according to claim 1, wherein, before the welding, the at least one embossing (6) for increasing the energy absorption of the laser light (7) in and / or around the area of ​​the at least one laser welded joint (5) is arranged on the at least one holding profile (2) and / or the at least one hollow profile (3).

3. 3. The method according to claim 1, wherein the at least one embossed portion (6) is arranged on an inner side (10) of the at least one holding profile (2) facing the inner space (9), preferably on at least one side web (12) of the at least one holding profile (2) that faces the vertical direction (11) in the use state of the side wall (1).

4. At least two, preferably exactly three embossments (6) are provided and / or said at least one embossment (6) is arranged as follows, namely, said at least one embossment (6) is arranged as follows: - provided in the form of grooves (13), preferably corrugated grooves (13), preferably with at least two, particularly preferably at least five, and very particularly preferably at least ten, ridges (14); and / or - have a substantially rectangular cross section and / or be locally arranged and / or along the longitudinal direction (15) of said side wall (1), in the region of one free end of said at least one holding profile (2), preferably spaced and / or centrally at intervals of at least five times the material thickness (16) of said at least one holding profile (2); and / or at a distance of at least 10 times the material thickness (16) of the retaining profile (2) from one free end in a direction perpendicular to the longitudinal direction (15) and / or along the first third of the length of the side web (12) of the at least one retaining profile (2), starting from an upper side (18) of the at least one retaining profile (2) arranged in the use position (17) of the side wall (1); and / or - in the use state (17) of said side wall (1) it is arranged on one side web (12) of said at least one holding profile (2) and / or said at least one hollow profile (3), and / or - to have a depth of at least 1 / 5 and / or at most 1 / 2 of the material thickness (16) of said at least one holding profile (2), and / or - on the side of the material facing away from the at least one embossment (6), to form a contact area (20), preferably a substantially planar contact area (20), for the at least one hollow profile (3) and / or the at least one holding profile (2), 4. The method according to claim 1, wherein the at least one holding profile (2) and / or the at least one hollow profile (3) is formed.

5. Each of the ridges (14) has two side surfaces (21) that preferably extend at an acute angle towards each other; - said sides (21) form an angle with one another ranging from 70° to 110°, preferably substantially at right angles; and / or one of the two side surfaces (21) is oriented relative to the at least one retaining profile (2) and / or the at least one hollow profile (3) in such a way that a perpendicular to the side surface (21) extends from the side wall (1) without contact between the two side webs (12) of the at least one retaining profile (2) and / or the at least one hollow profile (3); and / or - said lateral surfaces (21) have a lateral height (29) ranging from 0.05 mm to 0.2 mm, preferably from 0.1 mm to 0.15 mm, and / or at least one of said lateral surfaces (21) has a lateral length (30) ranging from 0.1 mm to 0.25 mm, preferably from 0.15 mm to 0.2 mm, and / or - the raised portions (14) have a side angle (31) relative to the side webs (12) of the at least one retaining profile (2) and / or the at least one hollow profile (3) of 15° to 40°, preferably 25° to 30°, and / or two adjacent raised portions (14) are spaced apart from each other by a distance of 0.2 mm to 0.5 mm, preferably 0.3 mm to 0.4 mm; The method of claim 4.

6. 6. The method according to claim 1, wherein the at least one laser welded joint (5) is formed in the form of a laser spot welded seam or a laser line welded seam.

7. 7. The method according to claim 1, further comprising applying at least one coating layer (22), preferably a plastic coating layer, to the at least one holding profile (2) and / or the at least one hollow profile (3), preferably in the region of the at least one embossment (6), and the at least one coating layer (22) is / are removed and / or partially removed, preferably by the at least one laser (8), before or during the welding.

8. 8. The method according to claim 1, wherein the laser radiation opening (23) of the at least one laser (8) is directed at an acute angle, preferably between 15° and 30°, particularly preferably between 20° and 25°, to the vertical direction (11) in the use state (17) of the side wall (1) in order to form the at least one laser welded joint (5), and wherein the laser light (7) is preferably emitted substantially perpendicularly to one of the possibly present two side surfaces (21) of the at least one embossment (6).

9. 9. The method according to claim 1, further comprising providing at least one holding device (4) made at least partly of a metal material for connecting the side wall (1) to the drawer back wall or the drawer front wall, welding the at least one holding device (4) to the at least one holding profile (2) by means of at least one laser weld seam (24), and forming a laser deformation (25) separate from the at least one laser weld seam (24) in the region of the at least one laser weld seam (24) by irradiation with laser light (7).

10. - the at least one laser welded seam (24) is located to a large extent on the at least one holding profile (2) at the point where the at least one holding device (4) and the at least one holding profile (2) come into contact with each other, and / or - the at least one laser deformation (25) is arranged for the most part at a location of the at least one holding profile (2) where the at least one holding device (4) and the at least one holding profile (2) are not in contact with each other, and / or - the at least one laser deformation (25) is arranged on the at least one holding profile (2) offset with respect to the at least one laser welded seam (24), and / or - the at least one laser deformation (25) and the at least one laser welded seam (24) are arranged relative to one another in such a way that the laser deformation (25) and the at least one laser welded seam (24) have at least one intersection (26) and / or the at least one laser deformation (25) extends across a width greater than the at least one laser welded seam (24) transversely to the longitudinal direction (15) of the side wall (1); and / or - forming said at least one laser deformation (25) at least partly in the form of a linear zigzag (27), and / or - the at least one laser welded seam (24) and the at least one laser deformation (25) are produced by the same laser (8), the focus of the laser (8) being adjusted, preferably widened, after the production of the at least one laser welded seam (24) and before the production of the at least one laser deformation (25); 10. The method of claim 9.

11. A side wall (1) for a drawer, comprising at least one holding profile (2) and at least one hollow profile (3), said at least one holding profile (2) and said at least one hollow profile (3) being at least partially made of a metallic material and welded to one another by means of at least one laser welded joint (5), The at least one holding profile (2) and / or the at least one hollow profile (3) have at least one embossing (6) in the area of ​​the at least one laser welded joint (5) and / or around this area for increasing the energy absorption of the laser light (7) of at least one laser (8) for forming the at least one laser welded joint (5).

12. The side wall (1) according to claim 11, wherein the at least one embossed portion (6) is arranged on an inner side (10) of the at least one holding profile (2) facing the inner chamber (9), preferably on a side web (12) of the at least one holding profile (2) facing in the vertical direction (11) in the use state (17) of the side wall (1).

13. At least two, preferably exactly three embossments (6) are provided and / or said at least one embossment (6) is / are as follows: said at least one embossment (6) provided in the form of grooves (13), preferably corrugated grooves (13), preferably with at least two, particularly preferably at least five, and very particularly preferably at least ten, ridges (14); and / or - have a substantially rectangular cross section and / or are locally arranged and / or along the longitudinal direction (15) of said side wall (1), in the region of the free end of one of said at least one holding profile (2), preferably spaced apart and / or centrally at intervals of at least five times the material thickness (16) of said at least one holding profile (2); and / or - at a distance of at least 10 times the material thickness (16) of the retaining profile (2) from one free end in a direction perpendicular to the longitudinal direction (15) and / or along the first third of the length of the side web (12) of the at least one retaining profile (2), starting from an upper side (18) of the at least one retaining profile (2) arranged in the use position (17) of the side wall (1), and / or - in the use state (17) of the side wall (1) it is arranged on one side web (12) of the at least one holding profile (2) and / or of the at least one hollow profile (3), and / or - so that it has a depth of at least 1 / 5 and / or at most 1 / 2 of the material thickness (16) of said at least one holding profile (2), and / or - on the side of the material facing away from the at least one embossment (6), a contact area (20), preferably a substantially planar contact area (20), for the at least one hollow profile (3) and / or the at least one holding profile (2), 13. The side wall (1) according to claim 11 or 12, which is formed on the at least one holding profile (2) and / or on the at least one hollow profile (3).

14. Each of the ridges (14) has two side surfaces (21) that preferably extend at an acute angle towards each other; - said sides (21) form an angle with one another ranging from 70° to 110°, preferably substantially at right angles; and / or one of the two side surfaces (21) is oriented relative to the at least one retaining profile (2) and / or the at least one hollow profile (3) in such a way that a perpendicular to the side surface (21) extends from the side wall (1) without contact between the two side webs (12) of the at least one retaining profile (2) and / or the at least one hollow profile (3); and / or - said lateral surfaces (21) have a lateral height (29) ranging from 0.05 mm to 0.2 mm, preferably from 0.1 mm to 0.15 mm, and / or at least one of said lateral surfaces (21) has a lateral length (30) ranging from 0.1 mm to 0.25 mm, preferably from 0.15 mm to 0.2 mm, and / or - the raised portions (14) have a side angle (31) relative to the side webs (12) of the at least one retaining profile (2) and / or the at least one hollow profile (3) of 15° to 40°, preferably 25° to 30°, and / or two adjacent raised portions (14) are spaced apart from each other by a distance of 0.2 mm to 0.5 mm, preferably 0.3 mm to 0.4 mm; The side wall (1) according to claim 13.

15. 15. The side wall (1) according to any one of claims 11 to 14, wherein the at least one laser welded joint (5) is formed in the form of a laser spot welded seam or a laser line welded seam.

16. 16. The side wall (1) according to any one of claims 11 to 15, wherein the at least one holding profile (2) and / or the at least one hollow profile (3) has at least one covering layer (22), preferably a plastic covering layer, preferably in the area around the at least one embossing (6).

17. 17. The side wall (1) according to claim 11, wherein at least one holding device (4) is provided for connecting the side wall (1) to the drawer rear wall or the drawer front wall, the at least one holding device (4) being at least partially made of a metal material and welded to the at least one holding profile (2) by means of at least one laser weld seam (24), and having at least one laser deformation (25) formed by a laser beam (7) in the region of the at least one laser weld seam (24) separate from the at least one laser weld seam (24).

18. the at least one laser deformation (25) is largely arranged at a location of the at least one holding profile (2) where the at least one holding device (4) and the at least one holding profile (2) are formed without contact with each other, and / or the at least one laser deformation (25) is arranged on the at least one holding profile (2) offset relative to the at least one laser welded seam (24), and / or - said at least one laser deformation (25) and said at least one laser welded seam (24) have at least one intersection (26); and / or - the at least one laser deformation (25) extends transversely to the longitudinal direction (15) of the side wall (1) over a width greater than the at least one laser welded seam (24); - the at least one laser deformation (25) is at least partially linear and / or has a zigzag (27), and / or the at least one laser welded seam (24) and the at least one laser deformation (25) are at least partially linear, the at least one laser welded seam (24) and the at least one laser deformation (25) have different line widths, preferably the laser deformation (25) has a line width greater than the at least one laser welded seam (24); The side wall (1) according to claim 17.

19. 19. A retaining profile (2) for a side wall (1) according to any one of claims 11 to 18, which is at least partially made of metal material, The holding profile (2) is characterized in that it has at least one embossed portion (6) on the inner side (10) facing the inner chamber (9) of the holding profile (2) and / or on at least one side web (12) facing the vertical direction (11) when the holding profile (2) is in use, for increasing energy absorption of laser light (7) of at least one laser (8) for forming at least one laser welded connection (5) with the at least one hollow profile (3).

20. 10. An assembly comprising at least one laser (8) and at least one side wall (1) according to any one of claims 11 to 18, in particular a method according to any one of claims 1 to 9, wherein a laser emission opening (23) of the at least one laser (8) for forming at least one laser welded joint (5) is directed at an acute angle, preferably an acute angle of 15° to 30°, particularly preferably an acute angle of 20° to 25°, to the vertical direction (11) in the use state (17) of the at least one side wall (1), so that the laser light (7) can be emitted, in particular directly, substantially perpendicular to one side surface (21) of the at least one embossed portion (6).

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