WO2009150065A1

WO2009150065A1 - Strip-like profile and method for producing said profile and pull-out guide with a profile of this type

Info

Publication number: WO2009150065A1
Application number: PCT/EP2009/056572
Authority: WO
Inventors: Rainer Weichelt; Karsten Kroke; Ralf Diener
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2008-06-09
Filing date: 2009-05-28
Publication date: 2009-12-17
Also published as: ES2443295T3; EP2303067A1; AU2009256704A1; EP2303067B1; TW201013085A; RU2508037C2; CN102056510B; RU2010152285A; DE102008027436A1; KR20110025820A; JP2011522702A; CN102056510A

Abstract

A strip-like profile (1,1', 1", 1' ", 1" ") for a pull-out guide is formed from a bent metal strip, wherein bent portions (2, 4, 5, 6, 8, 9, 10, 14, 15) are provided in a central region of the metal strip in order to form at least one running path (25) for rolling bodies which are arranged between edge portions (6, 10) of the metal strip. According to the invention, at least one edge portion (6, 10) of the metal strip is fixed to an adjacent portion (2) of the metal strip. As a result, the rigidity of the profile can be improved in an effective manner. The invention also relates to a pull-out guide with a profile of this type and to a method for producing said profile.

Description

RUNNING PROFILE AND METHOD FOR THE PRODUCTION THEREOF AND EXTRACTION GUIDE WITH SUCH A PROFILE

The present invention relates to a strip-shaped profile for a Ausziehfüh- tion, wherein the profile is formed of a bent metal strip having a central region which is arranged between lateral edge portions, wherein provided on the metal strip bent portions for forming at least one raceway for rolling elements are.

There are strip-shaped profiles for Ausziehfϋhrungen that form raceways for rolling elements and have a bent or folded structure. Due to the compact geometry is only a certain stability, especially in the lateral direction available. If the lateral stability of such a profile is to be increased, the profile geometry can be modified, which however increases the installation space. In this respect, a material must be used strength for the strip-shaped profile, which ensures sufficient lateral stability. In addition, a lowering in use is to be reduced for longer strip-shaped profiles.

It is therefore an object of the present invention to provide a strip-shaped profile for a pull-out guide and a method for its production, which has a high stability and can be effectively produced.

This object is achieved with a strip-shaped profile having the features of claim 1 and a method for producing such a profile with the features of claim 13.

According to the invention, at least one edge portion of the metal strip is fixed to an adjacent portion of the metal strip in the strip-shaped profile. As a result, the inherent rigidity of the strip-shaped profile is increased since the edge section and the adjacent section can no longer be displaced relative to one another. This has an effect, in particular, in the case of a torsional load, in which a loose abutment of an edge section would cause a shift, which is prevented by the permanent attachment of the edge section. As a result, the deformation of the strip-shaped profile is lower and it can be higher loads. In addition, it is possible to reduce the material thickness of the strip-shaped profile in order to save material costs and to reduce the mass while maintaining the same rigidity.

Preferably, the at least one edge portion and at least one of the adjacent portions at least partially cohesively connected to each other and can not be separated from each other. The connection area can thereby absorb loads and increase the rigidity of the profile.

According to a preferred embodiment of the invention, the at least one

Edge portion with the adjacent portion partially bonded together. Such bonding of the adjacent sections can be particularly effectively integrated into the manufacturing process. Alternatively or additionally, the sections may also be welded together by way of example. This also makes it possible to achieve a cohesive connection of the abutting sections.

In a further embodiment of the invention, the at least one edge portion and the adjacent portion at least partially determined by forming.

According to a preferred embodiment of the invention, the profile has in cross-section at least one cross-shaped region, in which two lateral webs and two vertical webs are provided, wherein the mutually cohesively connected sections are provided on a vertical web.

Preferably, an edge region is formed as a materially connected portion, since this can achieve a large increase in stability. It is also possible to connect the two edge regions of a metal strip with one another in a material-locking manner in order to increase the torsional rigidity.

In a further embodiment of the invention, a pull-out guide is provided, in particular for furniture, in which at least two rails which can be moved relative to one another are provided, which are connected to one another via a multiplicity of rolling elements. which are stored. One of these rails is designed as an inventive strip-shaped profile. Preferably, this strip-shaped profile is designed as a center rail of a pull-out guide with three rails. Especially the middle rail must partially absorb lateral loads or torsional loads, so that the stiffening of the central profile has a particularly advantageous effect.

In a method according to the invention for producing a strip-shaped profile, first a metal strip is unwound from a roll and then along a bending station with a plurality of bending devices, preferably grooves, for producing a bent or folded cross-section in a middle region of the metal strip to form Runways promoted for rolling elements. Subsequently, at least one edge portion of the metal strip is fixed to an adjacent portion of the metal strip with a permanent connection and the metal strip separated into strip-shaped profiles. This allows a particularly effective production of the strip-shaped profile, which can be produced in a continuous pass-through process, wherein existing systems can be used, which are supplemented by a gluing station, welding station and / or forming station. As a result, the cycle time in the production is not extended or only insignificantly, so that the mechanical advantages outweigh the stiffening of the profile.

According to a preferred embodiment of the method, a web-shaped application of adhesive takes place for fixing an edge section of the metal strip, so that corresponding adhesive application devices can be mounted on the bending station. It is also possible to place the adhesive in spaced strips or

To apply points in order to find no adhesive agent residues just in the area of the cutting edge for the profile. In addition, it is sufficient if the cohesive connection also takes place in sections. Instead of gluing the edge portion of this can also be welded down or reshaped.

In a further embodiment of the invention, the bonded metal strip and / or a strip-shaped profile is still welded after bonding. It is advantageous if the bonded portions are fixed prior to curing of the adhesive during welding of the profile. Because usually the clock time th in the production of the profiles kept very short, so that the adhesive is not cured when conveying the metal strip and can not develop a corresponding adhesive effect for a short time. For these cases, it is advantageous if a fixation of the bonded Profi lab cuts is achieved by welding, preferably by spot welding or by strips. To avoid distortion of the profile by one-sided welding, compensating welds or other measures can be provided on the opposite side of the profile. As a result, the curing of the adhesive can also take place later, since a deformation of the profile is expected only under a load in an assembled state, for example in a pull-out.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figures IA and IB show two views of a strip-shaped profile during the

manufacture;

Figures 2A and 2 are views of the profile of Figure 1 during bonding;

Figure 3 is a perspective view of the profile of Figure 2A after completion;

Figure 4 is a perspective view of the profile of Figure 2A ₅ 2B after completion in a modified embodiment;

Figure 5 is a perspective view of a modified profile during manufacture;

Figure 6 is a view of the modified profile of Figure 5 after completion;

Figure 7 is a view of a modified profile after completion, and FIGS. 8A to 8D show several views of a further embodiment of a strip-shaped profile.

In the figures IA and IB, a strip-shaped profile 1 is shown, which consists of a

Metailblech consists and was made for example of a metal band by numerous bends in the form shown. The profile 1 comprises a planar central portion 2, on which at each opposite ends a cross-shaped end-side region 3 or 7 is formed.

The end region 3 has an integral with the central portion 2 lateral web 4, to which a vertical web 5 connects, which adjoins a protruding bent edge portion 6. The edge portion 6 is formed from an end edge of the metal strip.

On the opposite side of the central portion 2, a cross-shaped end-side region 7 is also formed, which has a lateral web 8 and a vertical web 9 and a protruding from the central portion 2 edge portion 10.

At the central portion 2, a contact surface 13 is formed, are applied to the two parallel to the longitudinal axis of the profile 1 extending adhesive strips 1 1 and 12. The adhesive strip 1 1 is intended to serve for bonding the still to be bent edge portion 6, which is intended to abut against the inner surface 16 against the surface 13 of the central portion 2. Similarly, the lower edge portion 10 should rest with an inner surface 17 on the surface 13 of the central portion 2.

As shown in Figures 2A and 2B, by a further bending of the edge portion 6 at the cross-shaped portion 3, a lateral web 14 is formed, which is formed in mirror image to the lateral web 4, the Randab ^{¬ section} 6 now on the central web. 2 is applied and glued there. In the lower region, a lateral web 15 has been formed by deforming the edge portion 10, which is arranged in mirror image to the lateral web 8. The edge Section 10 was deformed in the region of an end section and adhesively bonded to the central section 2, so that the inner surface 17 is adhesively bonded to the middle section 2 via the adhesive strip 12. Between the end edges 21 and 22 of the edge portions 6 and 10, a gap 18 is formed. The gap 18 is arranged approximately centrally between the cross-shaped regions 3 and 7, but may also be arranged off-center adjacent to one of the regions 3 or 7.

The two cross-shaped regions 3 and 7 form between the webs 2, 4, 5, 14 and 6 and 2, 8, 9, 15 and 10 respectively arcuate raceways 25, on which rolling elements, in particular balls, can roll. Each cross-shaped region 3 and 7 has four raceways 25, wherein it is also possible to occupy only two or three of these raceways 25 with rolling elements.

In Figure 3, a finished strip-shaped profile 1 is shown. The edge sections 6 and 10 have been connected to one another via a strip-shaped weld seam 19. By the weld 19, the gap 18 is bridged between the edge portions 6 and 10, wherein the weld 19 may extend in the longitudinal direction and continuously to the ends of the profile 1.

In Figure 4, a modified embodiment of a strip-shaped profile 1 'is shown, in which instead of a continuous weld 19 a plurality of strip-shaped welding portions 20 are provided to the edge from sections 6 and 10 of the profile 1' to connect with each other. In the exemplary embodiment shown, four welding strips 20 are provided, whereby it is, of course, also possible to provide more or fewer welding strips 20. In addition, the connection of the

Edge sections 6 and 10 also take place via punctiform welds.

A further possible embodiment of a strip-shaped profile 1 "is shown in Figure 5. Instead of a web-shaped application of a weld seam 1 1 and 12, only shorter strip-shaped sections of adhesive 11" and 12 "are provided here, around the edge sections 6 and 10 with the center web 2 In the exemplary embodiment shown, four adhesive strips 11 "and 12" are provided in each case, wherein of course more or fewer adhesive strips 11 "and 12" can also be applied. 5, the edge sections 6 and 10 are now glued to the middle section 2. Furthermore, the edge sections 6 and 10 have been connected to one another via strip-shaped welding sections 20. The welding sections 20 and the adhesive webs 11 " This design has the advantage that comparatively little adhesive and welding allowance is required, and less heat is applied during welding, so that the material load during welding is less and a possible warping of the profile 1 "is avoided or reduced.

FIG. 7 shows a modified embodiment of a profile 1 '", in which the edge sections of the sheet-metal strip are fixed by forming on the middle section 2'". By the forming, a circular recess 30 is formed at the central portion 2 ", into which deformed end portions 32 are inserted, which in turn form a circular recess 33. The end edges 21 and 22 abut each other within the recess 30. However, between Forming the production tolerances also forms the end edges 21 and 22. By deforming by means of a punch, web-shaped protrusions 31 are formed on the recess 30 on the side opposite the edge sections The design of the die results in a pushbutton-like shape, so that the deformed sections are positively and non-positively connected to one another.

Shown in FIGS. 8A and 8C is a strip-shaped profile 1 "" which is produced from a metal strip and has a flat middle section 2 "" on which a cross-shaped end-side region 3 or 7 is formed at opposite ends, as in FIG the embodiment of Figure 1 is shown, so that the same reference numerals are used.

The end region 3 comprises a protruding bent edge portion 6 "", which is shorter than in the embodiment of the figure 1. On the opposite side of the central portion 2 "" is also a cross-shaped end-side region 7 is formed, on which a protruding edge portion 10 "" is formed. The edge portions 6 "" and 10 "" are spaced apart from each other with their end edges, so that the central portion 2 "" is formed over only a single length over a certain length. The edge sections

6 "" and 10 "" are permanently connected to the middle section 2 "" via continuous seams formed from adhesive strips 11 and 12 (FIG. 8C) or via a plurality of adhesive seam sections 11 'and 12' (FIG. 8D) trained welds can be made.

The geometry of the strip-shaped profile I ₅ 1 ', 1 ", 1" ^* and 1 "" can be modified just in the region of the cross-shaped areas 3 and 7. Instead of the formation of four raceways 25, only two or three raceways can be formed so that the webs 4, 5 and 14 as well as 8, 9 and 15 experience a different design.

In the inventive method for producing the strip-shaped profile 1, 1 ', 1 ", 1'" and 1 "", first a metal strip is unwound from a roll and then along a bending station with a plurality of bending devices, preferably rollers, for producing a bent or folded cross-section conveyed in a central region of the metal strip to form raceways for rolling elements. Subsequently, at least one edge portion of the metal strip is fixed to an adjacent portion of the metal strip with a permanent connection and the metal strip in Leistcnförmige profiles 1, 1 ', 1 ", T" and 1 "" separated.

The non-detachable connection of an edge portion 6, 10 with an adjacent portion 2 can be done by gluing, welding, forming or a combination of these joining techniques. The width of the edge portions 6 and 10 as well as the arrangement of the fastening strips or points can be varied according to the mechanical requirements.

If two sections of the metal strip to be glued, the adhesive application takes place in an open contour of the metal strip. The adhesive In this case, even the smooth metal strip can be carried out, but preferably the application of the adhesive takes place in the region of the bending station to a pre-profiled contour. For example, the adhesive application can take place when the contour of the profile 1 shown in FIGS. 1A and 1B has been reached. Then are preferably webs 1 1 and 12 of adhesive to the contact surface 13 of the

Middle section 2 applied.

After the application of the adhesive in webs, strips or points, the metal strip is further bent so that at least two flat sections are glued together, in the present case, the edge from sections 6 and 10 are bent so that they are adjacent to the end edges 21st and 22 are bonded to the central portion 2.

In the bending station, the edge portions 6 and 10 are first pressed onto the central portion 2, wherein the adhesive is not yet cured. Since, depending on the adhesive used, the curing requires a certain amount of time, it is advantageous if the glued edge sections 6 and 10 are already fixed during production. For this purpose, following the bending of the edge portions 6 and 10 in the contour shown in Figure 2A and 2B, a weld is made, as shown in Figures 3 or 4.

By attaching the welds 19 and 20, the edge portions 6 and 10 are additionally fixed to each other, wherein the welds 19 and 20 bridge the gap 18 between the webs 6 and 10. As a result, the central portion between the cross-shaped portions 3 and 7 is double-walled.

In addition, the welds 19 and 20 may have a depth that extends to the central web 2, so that also by the welds 19 and 20, a welding of the edge portions 6 and 10 in the region of the end faces 21 and 22 at the middle web 2.

By combining the bonding of the edge portions 6 and 10 and the subsequent welding a particularly stable profile 1 is obtained. Alternatively, after bonding the edge sections 6 and 10, an additional fixing of the edge sections can take place by forming in order to obtain a stable profile 1 '".

After fixing the webs 6 and 10 by welding, the strip-shaped profile 1, 1 'or 1 "in the desired length can be separated.

The erfmdungsgemäße profile can be used in particular in Ausziehfύhrungen, as they are found in furniture in drawers. In this case, the profile 1, 1 ', 1 ", 1'", 1 "" shown in the exemplary embodiments may be formed as a middle rail on which an inner rail and an outer rail are mounted via rolling elements. Due to the stiffening of the strip-shaped profile 1, 1 ', 1 ", 1" \ "", particularly high loads can be absorbed by the pull-out guide, in particular also with regard to a lateral load or a torsional load.

LIST OF REFERENCE NUMBERS

1 strip-shaped profile r strip-shaped profile

1 "strip-shaped profile v- ¹ strip-shaped profile

1 "" strip-shaped profile

2 middle section

3 cross-shaped area

4 lateral bridge

5 vertical bridge

6 bent edge section

7 cross-shaped area

8 lateral bridge

9 vertical bridge

10 protruding edge portion

11 adhesive strips

11 'glued seam sections

1 1 '' adhesive sections

12 adhesive strips

12 'adhesive sections

12 '' adhesive sections

13 investment sites

14 lateral bridge

15 lateral bridge

16 inner surface

17 inner surface

18 gap

19 weld

20 welding sections

21 front edge

22 front edge

25 raceways

30 deepening

31 ridge-shaped projection

32 end sections

33 circular recess

Claims

claims

ϊ. Strip-shaped profile (ϊ, 1 ', V', ϊ "', 1" ") for a Ausziehfύhrung, said profile (1, 1', 1", 1 '", 1" ") is formed of a bent metal band, which has a central region between the lateral edge portions

(6, 10) is arranged, wherein on the metal strip bent portions (2,

4, 5, 6, 8, 9, 10, 14, 15) for forming at least one raceway (25) for

Rolling elements are provided, characterized in that at least one

Edge portion (6, 10) of the metal strip is fixed to an adjacent portion (2) of the metal strip.

2. Profile according to claim 1, characterized in that the at least one edge portion (6, 10) and the adjacent portion (2) are connected to each other at least partially cohesively.

3. Profile according to claim 1 or 2, characterized in that the at least one edge portion (6, 10) and the adjacent portion (2) are at least partially glued together.

4. Profile according to one of claims 1 to 3, characterized in that the at least one edge portion (6, 10) and the adjacent portion (2) are at least partially welded.

5. Profile according to one of claims 1 to 4, characterized in that the at least one edge portion (6, 10) and the adjacent portion (2) are at least partially fixed by forming together.

6. Profile according to one of claims 1 to 5, characterized in that the profile on opposite sides end portions (3, 7) with one or more raceways (25) for rolling elements and between the end portions (3, 7) has a central portion (2) is arranged.

7. Profile according to claim 6, characterized in that the central portion (2) is double-walled.

8. Profile according to claim 6 or 7, characterized in that the edge portions (6, 10) with their end edges (21, 22) in the region of the central portion (2) are arranged.

9. Profile according to one of claims 1 to 8, characterized in that the end edges (21, 22) of the edge portions (6, 10) are at least partially fixed to each other.

10. Profile according to one of claims 1 to 9, characterized in that the

Profile (1, 1 ', 1 ", 1" ") in cross-section at least one cross-shaped portion (3, 7), in which two lateral webs (4, 14, 8, 15) and two vertical webs (2, 5, 6, 9, 10) are provided, wherein on a vertical web (2, 6, 10), the contiguous cohesive portions are provided.

1 1. pull-out, in particular for furniture, with at least two relatively movable rails, which are mounted on a plurality of rolling elements together, characterized in that a strip-shaped profile (1, 1 ', 1 ", 1'", 1 "" ) is provided according to one of the preceding claims.

12. pull-out according to claim 1 1, characterized in that the strip-shaped profile (1, 1 ', 1 ", 1'", 1 "") is designed as a middle rail.

13. A method for producing a strip-shaped profile (1, 1 ', 1 ", 1'", 1 5) 5 5, in particular according to claim 1, with the following steps:

- conveying a metal strip along a bending station with a plurality of bending means for producing a bent or folded cross-section in a central region of the metal strip to form raceways (25) for rolling elements;

- Fixing at least one edge portion (6, 10) of the metal strip to an adjacent portion (2) of the metal strip with a permanent connection; and - Separation of the metal strip in strip-shaped profiles (1, 1 ', 1 ", T", 1 "").

14. The method according to claim 13, characterized in that the setting of the Randabschnitles (6. 10) takes place at the adjacent section (2) by gluing.

15. The method according to claim 14, characterized in that the application of adhesive (l l, 12) is web-shaped.

16. The method according to claim 14 or 15, characterized in that after the application of adhesive (1 1, 12) the metal strip is deformed such that at least one edge portion (6, 10) is glued to an adjacent flat portions (2).

17. The method according to any one of claims 14 to 16, characterized in that the adhesive (H ', 11 ", 12', 12") is applied in spaced strips or dots.

18. The method according to any one of claims 14 to 17, characterized in that a fast-curing adhesive is used.

19. The method according to any one of claims 14 to 17, characterized in that the glued metal strip and / or a strip-shaped profile (1, 1 \ 1 ", 1" ") is still welded after bonding.

20. The method according to claim 19, characterized in that when welding the profile (1, 1 ', 1 ", 1" "), the glued portions (2, 6, 10) are fixed prior to curing of the adhesive.

21. The method according to any one of claims 13 to 20, characterized in that the setting of the edge portion (6, 10) takes place at the adjacent portion (2) by forming.