TW201313999A - Method of manufacturing a section rail - Google Patents

Abstract

A method of manufacturing a section rail for the carrying of panel-shaped elements, in particular for the insertion assembly of ceiling panels for grid ceilings, is described. The section rail includes an elongated web and a bottom chord which is arranged along a longitudinal edge of the web and includes two bottom chord portions each extending away from the web substantially in opposite directions. One of the bottom chord portions includes an outwardly disposed first longitudinal edge interrupted a multiple of times and the other bottom chord portion includes a substantially through going outwardly disposed second longitudinal edge. In the method, the lower side of the bottom chord disposed remote from the web is provided with an elongated sight screen. A first longitudinal edge of the sight screen is folded over, for example crimped or flanged, before the attachment to the bottom chord. Subsequently, the sight screen is attached to the lower side of the bottom chord so that the bent over first longitudinal edge of the sight screen encompasses the first longitudinal edge of the bottom chord. Subsequently, the second longitudinal edge of the sight screen disposed opposite the first longitudinal edge is bent over about the second longitudinal edge of the bottom chord.

Description

Method of manufacturing rails

The present invention relates to a method of manufacturing a rail for loading an element like a panel, in particular to an insert assembly for a ceiling panel of a lattice ceiling, wherein the rail comprises an elongated web and along the rail a bottom chord disposed on a longitudinal edge of the web and including two chord portions, each of the chord portions extending generally in opposite directions by the web, wherein one of the chord portions includes a plurality of intermittent outward settings The first longitudinal edge, and the other chord portion includes a generally longitudinally disposed second longitudinal edge, in this method disposed on the lower side of the chord away from the web having an elongated visual aid.

A method of manufacturing such a rail as described in European Patent No. 631,728 B1. As described in this document, wherein the rail is completely visually terminated downward, for example, it can be crimped on the bottom string. In this respect, the outwardly disposed longitudinal edge of the chord is surrounded by the ocular screen, thereby achieving additional stabilization of the chord.

However, because one of the longitudinal edges of the chord is intermittent, the problem may occur on the curvature of the swatch, i.e., the sash may have undesirable wrinkles on the roll. Because the visual aid is typically additionally covered, a downwardly ending surface that the visual appeal of the rail can be formed, such as wrinkles, is generally not acceptable.

Accordingly, the object of the present invention is to specify a method of manufacturing a rail of the type initially claimed, which can be attached to the chord in a simple manner, so The tube has a plurality of intermittently outwardly disposed first longitudinal edges, and wrinkles of the auxiliary screen attached to the chord are avoidable.

Starting from the method of the initial declared type, this object is achieved according to the invention, wherein the first longitudinal edge of the visual aid is curved, for example crimped or formed, before being attached to the chord, and then A screen is attached to the lower side of the chord such that the curved first longitudinal edge of the screen surrounds the first longitudinal edge of the chord, and then the visor is disposed relative to the first longitudinal edge The second longitudinal edge is curved adjacent the second longitudinal edge of the chord.

According to the invention, the visual aid screen is prepared in such a way that the first longitudinal edge of the visual aid is curved before it is actually attached to the chord. In this bend, the screen is not connected to the chord and thus the first longitudinal edge is disposed outwardly of the chord that is not connected to the plurality of discontinuities. Thus, the curvature of the first longitudinal edge of the occultation screen may occur on a flat surface, thus avoiding wrinkles on the curvature of the first longitudinal edge.

And attaching the auxiliary screen to the lower side end of the bottom string, such that the prepared curved first longitudinal edge of the auxiliary screen surrounds the first longitudinal edge of the bottom string, that is, the longitudinal edge has a number Interrupted. For example, the visual aid can be pushed or plugged onto the chord by the side. In the attaching process, the visual aid is not loaded in the downward facing surface direction of the visual aid screen, such that the longitudinal edge of the chord that is intermittently multiple times or the hole disposed between them is in the There is no negative effect on the flat surface of the visual aid and thus avoiding unwanted wrinkles on the auxiliary screen.

Thereafter, the second of the visual aid is disposed opposite the first longitudinal edge The longitudinal edge is curved adjacent the second longitudinal edge of the chord. Since the second longitudinal edge is generally designed to be through, no unwanted wrinkles are present on the curvature of the second longitudinal edge of the ocular screen because the bending occurs near the straight edge of the through.

In accordance with a preferred embodiment of the present invention, the first longitudinal edge of the ocular is very curved, the first longitudinal edge of the chord is located at the curved first longitudinal edge of the ocular and the Between the main parts of the visual aid, and at the bend of the visual aid. In particular, the first longitudinal edge of the ocular screen can be bent between approximately 180° and approximately 270°. The first longitudinal edge is thus curved such that the space between the curved unfixed longitudinal edge and the main portion of the surface of the ocular screen is only so large that it generally corresponds to the thickness of the chord or is slightly smaller. The visual aid is fastened to a single side of the chord so that attachment to the ocular is automatically achieved.

The second longitudinal edge of the occultation screen can also be curved between approximately 180° and approximately 270°. When bent at 270°, the longitudinal edge of the auxiliary screen can be realized, and the angle of the upper side of the chord is nearly 90°, and the longitudinal edge of the auxiliary screen is grasped to the upper side of the chord. And thus have a particularly strong connection.

It is generally possible to roll the curved first longitudinal edge of the ocular screen and/or the curved second longitudinal edge after the ocular shield is attached. However, the re-rolling can preferably be carried out with care, particularly with regard to the first longitudinal edge, so that no unwanted wrinkles occur. Such re-rolling, especially in the region of the first longitudinal edge, is generally not required since the edge is ideally formed before the screen is attached to the chord because The curvature of the first longitudinal edge of the occultation screen has been produced.

The visual aid can be additionally additionally attached to the lower side of the chord. The screen is fastened to the bottom string so as to be more increased.

In accordance with yet another preferred embodiment of the present invention, an elongated strip of material for the manufacture of rails, particularly a metal strip or strip of metal, has a plurality of elongated slits, each of the two free ends of the slit being disposed generally A line is formed parallel to one of the longitudinal axes of the strip of material and a curved line is formed, and the strip of material is bent along the curved line. Due to the bending process, the material portion of the metal foil strip bounded by the cut line is folded out of the web, and thus the rail is formed to halve the bottom chord (hereinafter referred to as the chord portion), The chord portion thus includes a plurality of portions of material separated from each other in the longitudinal direction. The web is generally bent in the opposite direction by a bending process to form the second chord portion that is integrally formed beyond its total length. The web and the final shape of the chord are formed by such individual bending procedures and such individual working steps. However, the holes made in the web can be used as a kink point that can be required in a fire situation.

More preferably, the slit is made in a U shape, in particular a branch having a straight base and preferably extending straight perpendicularly to the base of the straight line, or a trapezoidal shape. The height of the slits, i.e., the respective vertical spacing, is furthest from the bend line to the respective slit, and more preferably substantially the same size. It can thus be ascertained that all of the folded material portions have the same height and such a chord portion formed by the portions of the material has a uniform width and no material area removal is provided between the portions of the material. Furthermore, the height of the slit is preferably substantially the same between the curved line and the longitudinal edge of the strip of material The spacing, such that the two chord portions form the chord are substantially the same width and symmetrically configured as the web. More preferably, each of the slits is produced on the same side of the bend. In this method, the strip of material is bent by approximately 90° in order to produce a T-shape.

More preferably, the slit can be produced by a rotary cutting method or by a laser cutting method, or by a stamping process or by any other suitable method.

Further advantageous embodiments are presented in the scope of the dependent patent application.

Figure 1 shows a frame structure 1 comprising a plurality of plural rails 2 that have been previously parallel and vertically extended.

The rail 2 has a T-shaped cross section with an elongated web 3 and a bottom chord 4 adjoining the lower longitudinal edge of the elongated web 3. The chord 4 comprises two bends of the web 3, in each case outward, whereby two chord portions 5, 6 are formed which form a contact surface for the panel-like element 7, such as a ceiling panel.

The rail 2 has a top chord 8 on its upper longitudinal side, the top chord 8 being manufactured as a hollow section and acting as a coupling of the rail 2 to the suspension elements 9, 10.

Figure 2 is a plan view showing a strip of metal sheet 11, for example, forming a starting point for the manufacture of rails in accordance with the method of the present invention.

A plurality of elongated slits 12 made in a U shape are provided in the sheet metal strip 11, and each elongated slit 12 includes three linear separation cuts 13, 14, 15 which are perpendicular to the other. In this regard, the partial portion 14 is extended parallel to one of the longitudinal edges 16 of the sheet metal strip 11.

The free ends 17, 18 of the slit 12 are each in a straight line which extends parallel to the longitudinal axis 19 of the strip of metal strip 11 and forms a curved line 20.

The height 21 of the slit 12 is substantially the same size and substantially equal to the spacing 22 between the bend 20 and the longitudinal edge 16 of the sheet metal strip 11. Further, the U-shaped slits 12 are substantially equal in width and each have the same width while the material portion 36 is disposed between the slits 12.

To form the rail, the metal strip 11 is folded along the bend 20 such that the material portion 23 of the strip of metal 11 bounded by the slit 12 is folded out of the drawing plane and disposed therein. The strip portion 24 between the curved line 20 and the longitudinal edge 16 is folded to the plane of extension such that the base 25 of the rail shown in Fig. 3 appears.

As can be seen from Fig. 3, after the folding process, the strip portion 24 and the material portion 23 form the chord portions 26, 27 of the bottom chord 28, however the remaining area of the metal strip 11 is generally Vertically to the bottom chord 28, a web 29 of the base 25 is formed. In this regard, the curved line 20 forms a lower longitudinal edge of the web 29 abutted by the bottom string 28, the bottom string 28 having a plurality of intermittent first outwardly disposed longitudinal edges 33 and a second direction having a through The longitudinal edge 16 is externally disposed.

The aperture 30, which is generally rectangular, is created in the web 29 by folding the material portion 23 out.

Further, in the web 29 of Fig. 3, additional fastening holes 31 are provided in the form of repeated holes at regular intervals. In addition, two separate reinforcing beads 37 are formed between the holes 30 in the material portion 36 and are embossed in the abdomen The surface of the plate 29 is stretched in the opposite direction so that one reinforcing bead protrudes from the plane of extension and the other protrudes into the plane of extension. However, only the reinforcing beads 37 in the material portion 36 are shown in Fig. 3, they may also be formed in the other material portion 36 or in other regions of the web 29 and/or the bottom string 28.

As can be seen from Fig. 3, the outwardly disposed first longitudinal edge 33 of the chord 28 is formed intermittently multiple times, whereas the chord 28 is disposed outwardly from the second longitudinal edge 16 in a straight line. Extend. The shape of the two longitudinal edges 16, 33 can also be produced in different ways, such as by corresponding stampings or by other folding or kinking procedures. The chord and the web may also typically be comprised of, for example, separate portions.

In accordance with the present invention, a screen 32 is provided on the lower side 34 of the bottom string 28 as shown in FIG. The ocular panel 32 can be covered on at least its lower side and serves as a rail that produces a visually pleasing, identical viewing surface, such as the rails being inlaid on the ceiling. In order to avoid unwanted corrugations of the screen 32 at the bottom string 28, for example due to the absence of material areas between the material portions 23 during rolling, according to the invention, The lower side 34 of the chord 28 is previously prepared for the occultation screen 32 because the first longitudinal edge 35 of the slidable screen 32 is curved and the oppositely disposed second longitudinal edge 38 is not curved near this point. It is maintained in its unbent state, as shown in Figure 4.

Starting from the base body 25, as shown in Fig. 5, the curved first longitudinal edge 35 of the ocular screen 32 then extends onto the intermittent first longitudinal edge 33 of the chord 28, such that the occultation screen The curved first longitudinal side of 32 The rim 35 encloses the intermittent first longitudinal edge 33 of the chord 28. The result of the intermediate step of the method according to the invention is shown in Figure 6.

Since the main portion 39 of the surface of the auxiliary screen 32 does not need to be acted upon by pressure on this connection, and since it is not particularly necessary to apply pressure to the material portion 23, the assistance is not generated by the corresponding embossing effect. Unwanted wrinkles of the screen 32.

Thereafter, the second longitudinal edge 38 of the slidable screen 32 is curved adjacent the second longitudinal edge 16 of the chord 28 such that the final state shown in Figures 7 and 8 is established, wherein the two directions of the chord Each of the outer longitudinal edges 16, 33 is completely surrounded by the longitudinal edges 35, 38 of the ocular screen 32.

The curvature of the second longitudinal edge 38 of the slidable screen 32 is not a problem in this respect because the second longitudinal edge 16 of the chord 28 is designed to be continuous and uninterrupted so that the louver 32 is absent from the bend. Unwanted wrinkles are produced.

However, in Figure 7, the longitudinal edges 35, 38 of the ocular screen 32 are each bent at approximately 180 degrees, which also has a small or large value at one edge or at both edges. As shown in Fig. 9, for example, the degree of bending can each be approximately 270, and the longitudinal edges 35', 38' thus curved are each nearly vertical on the upper side 40 of the chord 28. Thus the longitudinal edges 35', 38' can be gripped to the upper side 40 of the chord 28, thereby creating a more reliable connection between the chord 28 and the ocular screen 32.

The present invention is susceptible to various modifications and alternative forms, and the specific embodiments thereof are fully shown by the examples in the drawings and will be described in detail herein. However, it should be understood that the drawings and detailed description are not intended to The invention is defined by the specific forms of the invention, and the invention is intended to cover all modifications, equivalents and alternatives of the invention.

1‧‧‧Frame structure

2‧‧‧ rails

3‧‧‧ web

4‧‧‧ bottom string

5, 6‧‧‧ bottom part

7‧‧‧ Panel-like components

8‧‧‧ top string

9, 10‧‧‧ suspension components

11‧‧‧Metal slats

12‧‧‧ incision

13, 14, ‧ ‧ separate cutting

16‧‧‧ longitudinal edges

17, 18‧‧‧ Free end of the incision

19‧‧‧ vertical axis

20‧‧‧ bend line

21‧‧‧ Height

22‧‧‧ spacing

23‧‧‧Materials section

24‧‧‧ strips

25‧‧‧ base

26, 27‧‧‧ bottom part

28‧‧‧ bottom string

29‧‧‧ web

30‧‧‧ holes

31‧‧‧ fastening holes

32‧‧‧Visual screen

33‧‧‧ longitudinal edges

34‧‧‧Under the lower side of the chord

35, 35’ ‧ ‧ the first vertical edge of the visual aid

36‧‧‧Materials section

37‧‧‧Reinforced beads

38, 38’ ‧ ‧ the second longitudinal edge of the visual aid

39‧‧‧ main part of the screen

40‧‧‧The upper side of the visual aid

The invention will be described hereinafter with reference to specific embodiments and drawings; there is shown: FIG. 1 is a perspective view of a frame structure having a T-shaped rail formed in a lattice ceiling according to the prior art; A plan view of a tangential metal sheet strip forming a T-shaped rail; FIG. 3 is a perspective view of a rail designed in accordance with the present invention in an intermediate step of the manufacturing method; and FIG. 4 is a pre-prepared screen; Figure 5 is a cross-sectional view through the rail according to Figure 3; Figure 6 is a cross-sectional view of the auxiliary screen partially attached by the rail according to Figure 3; Figure 7 is based on the third A cross-sectional view of the visual aid screen is attached to the rail of the figure; FIG. 8 is a perspective view of the auxiliary screen attached to the rail according to FIG. 3; and FIG. 9 is according to FIG. A cross-sectional view of a second embodiment of the screen.

16‧‧‧ longitudinal edges

23‧‧‧Materials section

24‧‧‧ strips

25‧‧‧ base

26, 27‧‧‧ bottom part

28‧‧‧ bottom string

29‧‧‧ web

30‧‧‧ holes

31‧‧‧ fastening holes

33‧‧‧ longitudinal edges

34‧‧‧Under the lower side of the chord

36‧‧‧Materials section

37‧‧‧Reinforced beads

Claims (10)

A method of manufacturing a rail for loading an element (7) like a panel, in particular an insert assembly for a ceiling panel of a lattice ceiling, wherein the rail comprises an elongated web (29) and along a bottom chord (28) of the longitudinal edge (20) of the web (29) and a bottom chord portion (26, 27), each of the chord portions being substantially opposite by the web (29) Directional extension, wherein one of the chord portions (26) comprises a plurality of intermittently outwardly disposed first longitudinal edges (33) and the other chord portion (27) comprises a generally through outwardly A second longitudinal edge (16) is provided, in which a lower auxiliary screen (32) is provided on the lower side of the bottom chord (28) remote from the web (29), characterized in that Prior to the chord (28), the first longitudinal edge (35) of the ocular screen (32) is curved, such as curled or formed into a flange; then, the ocular shield (32) is attached to the a lower side of the bottom string (28) such that the curved first longitudinal edge of the screen (32) surrounds the first longitudinal edge (33) of the bottom string (28); and subsequently, relative to the first longitudinal direction Edge (35) The co-Screen (32) of the opposing second longitudinal edge (38) tied to the bottom chord (28) of the second longitudinal edge (16) near the bend. The method of claim 1, wherein the first longitudinal edge (35) of the visual aid (32) is very curved, the first longitudinal edge of the chord (28) (33) A tong is attached between the curved first longitudinal edge (35) of the Vision Screen (32) and a major portion (39) of the Vision Screen (32) on the Vision Screen (32). The method of claim 1 or 2, wherein the first and/or the second longitudinal edges (35, 38) of the visual aid (32) are approximately 180° and approximately 270° Bending between. A method according to at least one of the preceding claims, wherein after the auxiliary screen (32) is attached, the curved first longitudinal edge (35) of the auxiliary screen (32) is rolled again and / or the curved second longitudinal edge (38). A method as claimed in at least one of the preceding claims, wherein the visual aid (32) is additionally affixed to the lower side of the chord (28). The method of at least one of the preceding claims, wherein the elongated strip material (11), in particular the metal strip or sheet metal strip, has a plurality of elongated slits (12), two of which (12) Each of the free ends (17, 18) is disposed on a line substantially parallel to one of the longitudinal axes (19) of the strip of material (11) and forms a curved line (20), and the strip of material (11) Bend along the bend line (20). The method of claim 6, wherein the slit (12) is made in a U shape, in particular a branch having a straight base (14) and more preferably extending straight to the straight base (14) (13) , 15), or become a trapezoidal appearance. The method of claim 6 or 7, wherein the slits (12) are each produced on the same side of the curved line (20). The method of claim 6, wherein the strip of material (11) is bent by approximately 90°. a method as claimed in at least one of claims 6 to 9 The slit (12) is produced by a rotary cutting method or by a laser cutting method or by a stamping process.