TWI304001B - Method and device for producing a lattice girder - Google Patents

Description

1304001

V IX EMBODIMENT DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method and apparatus for fabricating a lattice raft which is extended by at least one upper chord, at least one lower chord and back and forth between at least the upper and lower chords Consisting of a strut line, bent in a zigzag pattern with curved vertices at the upper and lower chord ends, and each welded to the upper and lower chords. [Prior Art] ® will have a winding and a strut extending through the zigzag The lattice that is connected to the two lower strings of the upper string is used in the construction industry in different ways. The ability of the lattice rafts to be supported on the support via the ends of the lower chords such that the load of the lattice raft terminal is supported is based on whether or to what extent: each lower chord protrudes beyond the last welded seam of the lower chord line to the struts line. Since in the well-known device for manufacturing such lattices (AT-3 6 5 4 6B), only a uniform lattice can be produced which has a specific constant bending pattern of the strut lines and thus has a φ curved vertex of the strut line. The mutual spacing, the ability of these lattices to support the load is based on the length of the individual lattices required in each case, which is cut from the lattices made from the gradual feeding of the strings and the strut lines. The length is obtained. Therefore, using well-known measures, it is not possible to manufacture a lattice having any desired length, the lower end of which is terminated via a welded joint or positioned in the region of the curved apex of the strut line. SUMMARY OF THE INVENTION The object of the present invention is to avoid the disadvantages of the state of the art and the method and apparatus of the type specified in the preamble, which method allows for the manufacture of the method in a simple manner. At least one upper string, at least one lower string, and a lattice of at least one strut line extending back and forth between the upper and lower chords to produce a lattice raft having any desired length, wherein the lower or upper end of the string is joined by a welded joint The ability to terminate so that the maximum bearing load can be utilized is independent of the length of the cut in the discussion, and it can absorb additional shear forces in the bearing area. Additionally, it is an object of the present invention to provide a device that allows at least one lattice to be secured to a shell plate with the necessary stability, wherein in this application, the lattice must also be of any desired length. It can be manufactured, but the terminal position of the lattice is in the region of the curved apex of the strut line. According to the present invention, a lattice for forming a lattice consisting of at least one upper chord, at least one lower chord, and at least one strut line extending back and forth between the upper and lower chords is curved in a zigzag manner with curved vertices at the upper and lower ends. The method of welding each of them to the upper and lower chords is characterized in that the spacing between adjacent curved vertices of the strut lines can be changed within the grid, wherein it is preferred to select the spacing ratio lattice at the end of the lattice 桁The central region is relatively close, and the lower chord can be fed into various feed planes and the lattice shackles can be cut from the continuously produced material strands at predetermined cutting positions. Viewed in the direction of manufacture, it is preferred to cut the lattice 直接 directly behind the welded joint formed by the lower chord and the curved apex on the lower chord. Alternatively, the grid is cut in the curved apex of the strut line on the lower end. According to a different variant, viewed in the manufacturing direction, the lattice 桁 is cut directly behind the welded joint formed by the curved apex of the upper and upper ends of the I3040P1. In the above specific embodiments, the protrusion protruding beyond the strut line of the lower chord is bent outward or inward at a predetermined angle beyond the plane of the strut line, wherein preferably, when bent outward, each curved protrusion is located in a horizontal plane in. Further, according to the present invention, when each of the lattices has only one pillar line, wherein the pillar line extends in a vertical plane, the protrusions protruding beyond the pillar line of the lower string are alternately bent to observe the manufacturing direction, to the left And right φ enters a horizontal plane. According to a further feature of the invention, each lattice tether is joined by a curved projection of its strut line and is preferably welded to the crust plate. The subject of the invention is also a device for carrying out the method, which has a feed device for upper and lower strings and strut lines, a bending device with strut lines, and a welding device for connecting the strut lines to the upper and lower strings. A device having two fixed centers for fixing the respective curved vertices on the lower chord relative to the upper chord welding device, having a cutting device for cutting, the welded lattice 桁 to a certain length, and a stacking device. According to the invention, the apparatus is characterized in that a pivotable centering means downstream of the bending means is provided for fixing the respective curved vertices on the lower chord, the centering means being used together for fixing the curved vertices On the lower chord end, each centering device relative to the upper chord welding device is pivotable; for fixing the curved vertices on the lower chord end, the respective centering devices relative to the upper chord welding device are adjustable parallel to the manufacturing direction The spacing and its distance from the fixed centering device, and a function of the predetermined spacing of the lower chord welding devices as a curved apex I304Q01 can be adjusted parallel to the manufacturing direction; an additional cutting device is provided for cutting the curved apex on the lower chord end And a cutting device for the curved apex on the lower chord and a cutting device for the upper and lower chords, and if necessary, the cutting device for the struts is a function of the cutting position required for the lattice, and is displaceable parallel to the manufacturing direction . Preferably, the centering device is fixedly coupled to a rotating shaft rotatably mounted on a frame and the upper string welding device is displaceable parallel to the manufacturing direction as a function of the pitch of the curved apex. p Alternatively, the centering device acts as a function of the pitch of the curved apex, is displaceable parallel to the manufacturing direction and is mounted in a manner fixed to rotation on the rotating shaft and the upper welding device is fixedly mounted on the frame. According to a further feature of the invention, the centering devices (which are adjustable in mutual spacing) are adjustable via a common adjustment device having a different gear ratio. Preferably, a bending device is provided which is displaceable relative to the cutting device and downstream of the latter for bending the projections projecting beyond the strut lines of the lower chord away from the plane of the strut line. According to a further embodiment of the invention, the feed device, the welding device, the lower string cutting device and the cutting device of the lower string and the strut line can be adjusted in height to accommodate different feed planes of the lower string. Further, according to the present invention, in order to adjust the pitch and displacement of the curved apexes of the strut lines in the bending device, the centering means, in each case, provide the welding device, the cutting device and the bending device to actuate the drive, which are controlled via a central control The device is controllable as a function of the predetermined spacing of the curved vertices I304Q01

Finally, the lattice 具有 having curved projections can be fed to the stacking device. An additional device for carrying out the method, in which the lattice raft is connected via a curved projection of its strut line, preferably welded to the shell plate 'characterized by: the shell plate borrowing back and cross conveyor The help of the device can be removed from the stacking storage, can be transported in the lateral direction and can be placed on the support table. The feature is that at least one lattice can be removed from the stacking device with the help of the cross conveyor and the combined device. The transverse direction can be transported and can be placed on the shell plate; the feature is that the shell plate matched with the lattice raft can be intermittently transferred by the help of the embedding and withdrawing device; the embedding and withdrawing device can be parallel to the manufacturing direction. Moving and having a plurality of grabbers to an engagement device to secure the projection of the strut line to the shell plate and can be transported away from the engagement device. Preferably, the joining device is a welding machine having a pair of welding electrodes adapted to cause each contact point between the shell plate and the strut line, wherein the pairs of electrodes are arranged to extend laterally relative to the manufacturing direction. In a welding line. • [Embodiment] The apparatus 1 illustrated in Figures 1 to 3 is used as a manufacturing grid 桁G, which comprises: a winding chord, two lower chords U extending parallel to each other, and a distance between the upper chord and the upper chord Parallel to the upper chord and the two struts lines Z, Z, each extending back and forth between the upper chord 0 and the lower chord U, u ', bent in a zigzag manner and welded to each of the strings 0, U, U '. In the region of the upper chord 0, the strut lines z, Z' curved in a zigzag shape have curved vertices S and in the vicinity of the lower chords u, u, they have curved vertices Y. The distance between two adjacent curved vertices on the upper end -10- 1304001 i * s or the distance between the _ vertices s 1 on the lower chord is called the distance T, T. The distance between the apex s on the upper chord and the curved apex S on the lower chord is defined as the height of the lattice 桁G. According to the present invention, the distance 桁 between the lattices G and the Τ' may be different, wherein it is preferable to select a narrower distance τ than the lattice 桁G in the region of the bracket, that is, in the both end regions of the lattice 桁G. The distance between the central regions is narrow, because in the region of the stent, the shear force absorbed by the lattice G is the largest. The upper chord extends at the upper end of the strut line Ζ, Ζ, between the curved vertices s φ, while each of the lower chords U, U ' is welded to the welded joint κ 1, Κ 2 in the strut line Ζ, Ζ ' Outside or inside. Each of the lower chords, U, is located in a horizontal plane Χ-Χ. In the exemplary embodiment shown in Fig. 1, the plane extends higher than the struts, and the curved vertices of Ζ' are from the upper chord. Scheduled to choose a distance. As part of the invention, the projections E projecting beyond the strut lines z, Z' of the lower chord u, U' can be bent outward or inward beyond the plane of the strut lines Z, Z' at a predetermined selectable angle. Inside. In the exemplary embodiment shown in Figures 1 and 2, the projection E is bent outwardly in such a way that the curved projection E' lies in a horizontal plane, and via this method, according to the invention With the aid of the device shown in Fig. 4, when the latter is fastened (preferably welded) to the shell plate B, the lattice 桁G' is given a larger contact area and, therefore, greater stability. The position of the lower chord U, U' relative to the strut line Z, Z' is substantially based on the static need on the lattice 欲 to be manufactured. However, when the projections E of the strut lines Z, Z1 are bent, the durability of the welded joints K1 and K2 with respect to the lower chord U, U1 and the strut lines Z, Z, so that the bending follows the lower chord U, U1, this It is beneficial. As a part of the invention, as shown in Fig. 3, it is possible to allow the lower chord, υ, to extend into the feed plane χ ^ χ 'in this plane and the lower chord end of the struts, The respective curved vertices s ' of the Ζ 1 overlap. The device illustrated in Fig. 1 has a fixed frame 2 which is viewed in the manufacturing direction Ρ 1 with a feeding device 3 on its inlet side. The feeding device 3 has a device 4 for clamping the winding, by which the line of the upper winding is intermittently extracted in a manufacturing direction Ρ 1 from a line supply not shown in the drawing. The feeding device 3 additionally has a device for clamping the lower string. 5, by means of its help to 'send the two strings U, the line in the manufacturing direction pi from the line supply source not shown in the figure, intermittently extracted into the feed plane X - X. The feed device 3 is double arrow Ρ 2 The direction is displaceably arranged on a plurality of wheels 6 extending over at least one rail 7 fixed to the frame 2. In each case, the unit for clamping the winding 4 and the unit clamping the lower string 5 are advanced via eccentricity Adjustable by a linearly driven crank mechanism. The device 4 is height-adjustable in the direction of the double arrow Ρ3 so that lattice 桁G having different heights can be produced. The device 5 for clamping the lower chord can be adjusted in the direction of the double arrow Ρ4 so that the lower chord U, U' can be fed in Different feed planes χ_χ or χ, -χ, 中 (refer to Figure 3). Configured on the frame 2 is used to produce a struts that are bent into a zigzag shape, Ζ '之曲装置8' It is constructed in the usual way. For example, 'in accordance with ΑΤ- 3 6 5 4 8 6 Β. The pillar line Ζ, Ζ, the line D, D will be formed continuously from the unillustrated line warehouse. Based on the application in the discussion The bending device 8 can produce pillars having different pitches Τ, Τ' and different heights, ζ'. Two pillars ζ, the Ζ1 extends into the shape of a dome, wherein in the present invention -1 2 - 1304001 Within the range, the angle between the two strut lines is selectable. First, the curved vertices S on the upper end are welded to the upper chord 0 by means of the welding device 9. The welding device 9, for example, is in the welding cycle Two welding electrodes that can be applied to the outside of the strut lines Z, Z' The composition is as described in the patent application AT-3 6 5 4 8 6B. The welding device 9 is arranged on the frame 10, which is shackled along two rails 1 2 fixedly connected to the frame 2 The direction of the double arrow P 5 can be moved over a number of rims 1. The one configured on the frame 1 is the transformer 13 of the winding welding device 9, which is connected to the winding by the help of the flexible cable 14 On the welding device 9. On the forward entry edge of the upper chord welding device 9, the upper chord 0 is guided by a chord conduit 15 having a guiding insert 16. The outlet edge disposed after the upper chord welding device 9 is An upper aligning device 177, which generally comprises a guide plate which is adjustable parallel to the feed plane XX (perpendicular to the plane of the drawing) which extends over a plurality of curved vertices s of the strut lines Z, Z' and has The task of not twisting the upper chord and preventing any bending in the lattice 桁G is called bowing. The upper-spinning welding device 9 has a guide thread i 5 ® and a winding alignment device 17 on the guide insert 16 in the direction of the double arrow P6, and is height-adjustable.

The arrangement is arranged on the frame 10 so that lattices 不同G 不同 having different heights can be manufactured with respect to the bending apex S of the strut lines Z, Z, positioned on the lower chord end relative to the upper chord Ο a configuration of a fixed centering device 18 On the entry edge of the winding assembly 9 , followed by a device 1 9 for adjusting the center and an additional adjustment centering device 20 on the exit side after the winding assembly 9 is followed by 'each of the centering devices 18, 19, 20 joined into the curved vertices s · on the lower 13-1304001 I f chord end of the strut line Z, z, and acts together with the anti-bracket not shown in the figure, extending between the strut lines z, Z·, and In this way, the respective curved vertices s' are fixed relative to the upper chord 0 on the lower chord ends of the strut lines z, Z'. Once the strut lines Z, Z' are firmly welded to the upper chord 0, the positions of the curved vertices S' on the chord end below the longitudinal direction of the lower chord u, U' are also used as the required distance T, T ' in the lattice 桁G. The function is pre-determined. The fixed centering device 18 is fixedly coupled to the rotary shaft 22 via a rotary lever 2 1 which is in turn fixedly coupled to a rotary lever 23 which is rotatable in the direction of the double arrow p 7 . Further, the other of the rotary levers 24 is fixedly coupled to the rotary shaft 22 with a guide rail 25 at the other end. On the guide rail 25 is a bracket 2 6 with an adjustment centering device 19. The bracket is arranged to rotate but in the direction of the double arrow P8 together with a further bracket 27 with an adjustment centering device 20 Mounted in a displacement manner, the bracket 27 is also mounted in a manner that is arranged to rotate but is displaceable in the direction of the double arrow P9. The adjustment of the carriages 26, 27 and thus the adjustment of the adjustment centering means 19, 20 continues to occur with the aid of only the indicated adjustment means 28. Within the scope of the invention, the adjustment device 28 may comprise two controllable hydraulic cylinders or one of two threaded sections having different gear ratios to adjust the mandrel. With the aid of the adjusting device 28, the adjusting centering devices 1 9 and 20 are adjusted to their mutual spacing and according to the required spacing T, T1 of the strut lines Z, Z1 in relation to the fixed centering device 18 - The segment distance, wherein the centering device 20 for adjusting the outlet edge is adjusted to have a set path different in the same direction, and the setting path of the centering device 19 adjusted with respect to the inlet side is often to ensure: through a fixed centering The distance between the device 18 and the centering device for adjusting the inlet side is between 19 and -14-1304001. The distance between the latter and the centering device for the outlet side adjustment is the required distance T, which is required. In one aspect, due to the rigid connection between the rotating shaft 22 and the two rotating rods 2 1 and 24, on the other hand, together with the rigid connection between the rotating rod 24 of the guide rail 25 and the two brackets 26 and 27, the fixing is fixed. The centering device 18 and the two centering devices 1 9 and 20 are cyclically rotated in the direction of the double arrow ρ 7 , by which they are intermittently caused to engage and extend beyond the curved apex of the lower chord The range of engagement is fixed to the position of the latter relative to the upper welding device 9. In the illustrated exemplary embodiment, the centering device 1 9 is fixedly coupled to the rotating shaft 2 2 while the welding device 9 of the upper winding is displaceable by a double arrow P 5 parallel to the manufacturing direction P 1 . . However, it is also possible within the scope of the invention to arrange the winding device 9 of the upper chord in a fixed manner on the frame 2 and the displacement of the mounting centering device 18 in a direction parallel to the manufacturing direction P1 and in the direction opposite to the manufacturing direction P1 and P1. Axis 2 2 on. With the aid of the welding device 29, the strut lines Z, Z' are welded to the lower chord U, U'. By this method, each strut line z, Zf is welded to one of the two welded joints K1, K2 Associated with the string u, u'. By way of example, the welding device 29 includes a power supply bridge that is disposed between the strut lines Z, Z, and in each case from the outside to the lower chord U, one of the welding electrodes, such as at AT-3 6 5 4 8 6 B is described in more detail. The lower chord welding device 9 is operated in the same regular pattern as the upper chord welding device 9. The welding device 29 is disposed on the frame 30, and the frame 30 is movable in the direction of the double arrow p 1 沿着 along the two seat rails 3 2 that are fixed to the frame 2 via the connection. on. Disposed on the frame 30 is a transformer 3 3 of the lower-chord welding device 29, and -15-1304001 is connected to the lower-string welding device 29 by a flexible cable 34. Within the scope of the present invention, it is possible to allow the two lower chords U, U1 to extend to the struts Z, Z. outside or to the inside of the latter extending in a top-like manner. The welding device 29 must be designed in accordance with the configuration of the chord U, U· (relative to the strut line Z, Z1). The course of the lower chord U, U, is determined by the static need on the lattice 桁G, and is generally bent away by the later portion of the projection E1 of the strut line Z, Z1. The output side disposed behind the lower string welding device 29 is a guiding device 35 which generally includes one of the guide surfaces having the lower chord U, 1^ and the strut lines z, Z, the corresponding top shape The flattening is suitable for guiding the lower chord u, ir and maintaining the pitch of the curved apex s ' of the strut line z, z ' on the lower chord end. The guide plate extends over a plurality of curved vertices s ' of the strut lines z, z, and is perpendicular to the feed plane XX (in the plane of the drawing) and is rotatable and wraps around an axis extending in the manufacturing direction P1. Tilting, and thus, can compensate for any bends in the manufacturing or any of the perforations in the lattice G. The lower string welding device 29 and the guiding device 35 are disposed on the frame 30 in an adjustable height direction in the direction of the double arrow Ρ 11 so that the lattice 桁G of the different ® positions having the lower chords u, U can be manufactured. The finished welded grid 桁G is fed to the cutting device 3 6, whereby the bending vertices s of the strut lines Ζ, the lower end of the chord 1 are cut according to the required length of the lattice G. The cutting device 36 has two blade means 37 which cuts the curved apex S' on the lower middle end of the center of the curved apex s. In order to move the cutting line, the cutting device 36 is arranged on the frame 38, which is movable in the direction of the double arrow Ρ 12 along the rail 32 fixedly connected to the frame 2 on the wheel 39. . -16- I304Q01 Then feeds the lattice 桁G to the bending device 4 Ο, which is bent outward in this way to protrude beyond the lower chord u, ir of the struts, 各 'the projections ε out of the plane of the strut lines z, Z ' The projections E outside the range for being bent away extend in a horizontal plane. Due to the so-called "feet" generated in this way, the contact points of the lattice 桁G' are correspondingly enlarged, and as a result of this, the stability of the lattice 桁G' is given. Similarly, the curved portion 40 is disposed on the frame 38, and thus, displaced in the direction of the double arrow P12. Since in its operating position, the cutting device 36 and the bending #4 must be positioned as precisely as possible on the curved apex s' on the lower chord, the bending device 40 is oriented in the direction of the double arrow P1 3 relative to The cutting device 36 is adjustablely arranged on the frame 37. In accordance with the present invention, this is particularly the case when grids 桁G having different pitches T, T1 are being produced. Within the scope of the present invention, it is possible to arrange the bending means 40 in front of the cutting means 36 so that the respective projections E are first bent, and then the respective curved projections E are cut into curved curved vertices S'. This finishing requires a neat cut to warp the projection E', and cut the terminal crack. In the specific embodiment of the example, this is not necessary because the cut ends of the projections are pressed together in a plane during bending. In order to cut through the upper chord 0 and the lower chord u, U, therefore, in order to finally cut the lattice 桁G from the line of material, a cutting device 4 1 is arranged downstream, ensuring that one cutting position matches the cutting position of the cutting device 36, This cutting device 4 1 is movable on the wheel along the rail 3 2 in the direction of the double arrow p ! 4 . The cutting device 41 has a winding device 43 of the upper chord 0, which can adjust the height and the lower chord u in the direction of the double arrow P15, and the blade device 44 of the cymbal is installed. Cut the 42 heads of the -17-I3P40P1 in the direction of the double arrow P 1 6 'the same height can be adjusted. The cut lattice 桁G' is conveyed out of the production line' and stored on the stacking device 45 (refer to Fig. 4). The detail of the bending device 40 illustrated in Fig. 2 shows a bending tool 4 6 which is rotatable in the direction of the double arrow P 17 . In the bent position shown, the bending tool 46 is supported from the outside against the strut line Z, so that the recess 47 corresponding to the corresponding shape on the lower U through the center is generated. The inside of the strut line Z is an anti-support 4, which, when bent, prevents the escape of the strut line Z. If the lower chord U is positioned inside the strut line Z, the counter yoke 48 must have a recess corresponding to the lower chord U. The bending of the projection E is carried out with the aid of a right-angled lever 49 which is rotatable in the direction of the double arrow P 18 . On the surface facing the right-angled lever 49, the bending tool 46 is designed in such a manner as to be referred to as a curved projection E' of the foot extending in a horizontal plane. The means for bending the projection E of the strut line Z' has a similar configuration. Within the scope of the present invention, it is possible to bend outwardly or inwardly at an optional angle. The projection E of the strut line Z, Z' which is curved beyond the lower chord u, U' is outside the plane of the strut lines Z, Zf. In order to set the required bending angle, the movement of the right-angle lever 49 is correspondingly controlled. In order to bend the projection E inwardly, the respective bending devices 46, 48 and 49 shown in Fig. 2 are arranged in a mirror image manner.

Within the scope of the present invention, as schematically illustrated in Fig. 3, it is possible to fabricate a lattice 桁G whose lower chord U, U1 extends in the region of the horizontal feed plane X^X' where the apex S' is curved at the lower chord end. In this case, each strut line Z, Z -18- 13.04001 is welded to the associated lower chord u, U, via only one weld node κ. In this variant, the direction of the double arrow P, i 4 can be shifted by the upper chord and the lower chord cutting device 4 1 f to cut the lattice 桁 G. The welded joint κ has an approximately wide configuration based on the thickness of the line constituting the lower chord u, and the branch line Z, Z'. The cutting position of the upper and lower chord cutting devices 41 must be selected so that, in any case, the lower chord U, U f and the strut lines Z, z, are welded. In the case of a small welded joint K, the cutting system is carried out closely behind the welded joint K and in the case of a wide welded joint, it can be cut into it. In a particular embodiment, the upper and lower chord cutting device 4 1 has a blade device 4 3 'with respect to the upper chord, the device 4 3 is adjustable in height in the direction of the double arrow p 1 5 and has a blade device 50 for the lower chord U The joint cut of the IT and the strut lines Z, Z, and the device 50 are similarly adjusted in the direction of the double arrow pf 16 . In this embodiment, the cutting device 36 and the bending device 40 are not in operation. In addition, FIG. 3 shows that one end piece of the lattice 桁G has a distance between adjacent central regions of the lattice 桁G at its terminal end. T is narrower between the distances τ'. In the construction industry, in the case of lattice rafts, the spacing τ, Τ' is in the range of 180 to 220 mm. The apparatus 5 1 illustrated in plan view in Fig. 4 is adapted to weld each of a plurality of lattices Gf onto the shell plate ' 'where each of the shell plates Β has a plurality of extensions in the longitudinal direction of the shell plate B The flat rib R ° is moved by the retracting and cross conveyor device 5 3 on the two rails 5 by the direction of the double arrow P 1 9 'moving a shell plate B from the stacking storage 5 4 and arrow p2 The direction is transported to the carriage table 55 and placed on its -19- 13,04001. For example, the shell plate B is raised from the stacking store by the aid of a heavy magnet or a vacuum suction device. The lattice 桁Gf is removed from the stacking device 45 of the lattice 桁G' by the help of the cross conveyor and the combination device 56 movable in the direction of the double arrow P21 on the two rails 52 and transported to the carriage in the direction of the arrow 22 The table 55 is stacked there on the shell plate B which is placed there in such a manner that the respective curved projections E' of the strut lines Z, Z' are located on the ribs R of the shell plate B. Based on the application, a plurality of, preferably three, lattices G1 are placed on the shell plate B. Adjacent to the carriage table 55 are two rails, and an embedding and withdrawing device 58 is movable thereon in the direction of the double arrow P23. The embedding and retracting device 58 has a plurality of grippers 59 that grip the clamshell B' traversing the scaffolding table 5 and cooperate with the lattice Gf, and in the direction of the arrow P24, will cooperate The shell plate B' is fed into a circulating operation in the welding machine 60. The curved projections E1 of the strut lines Z, Z' are welded to the shell plate by a number of cycles arranged on the weld line extending transversely to the manufacturing direction P1 which can be raised and lowered by the pair of welding electrodes 61. B's each on R. In order to optimally use the manufacturing rate of the welding machine 60, a pair of welding electrodes 6A are disposed on the welding line of each contact point between the rib R and the strut lines Z, Z. In order to increase the manufacturing rate, within the scope of the present invention, it is possible to match the additional welding line with the welding electrode 61 so that in the double welding operation observed in the manufacturing direction p, many contact points can be welded simultaneously or independently of each other. In order to adapt the weld line to the different distances τ, T in the lattice 桁 G', at least one weld line is arranged in the welder 60. In order to facilitate the manufacturing direction p 1 and the direction opposite to the manufacturing direction p } -20- 13,04001, it is displaceable. The inserting and withdrawing means 58 pulls the shell plate through the welding machine 60 in a step in harmony with the latter. The finished welded shell plate B' is then moved and advanced via a device not shown for additional use, for example stacked. Once the carriage table 5 5 is empty, a new shell plate is placed on it and the manufacturing cycle is restarted. The essence of the invention lies in that, based on the length of the lattice 桁G, G1 to be manufactured, the distance 桁 between the lattice 桁G5 G′ can be set, and τ′ is differently set in such a manner as to cut the lattice on the strand of the material produced by the continuous drawing. The derivative G, G ' is based on the application, as illustrated in Figure 3, with the help of the upper and lower chord cutting device 4 恰 just after the welding node κ, or as illustrated in Figure 1 With the help of the strut cutting device 3 6 and the upper and lower chord cutting devices 4 1 , the apex S is bent at the lower chord end, and the cutting is stopped, wherein the narrow distance Τ ' is positioned at the end and the end of the lattice 桁 G, G 1 . Therefore, 'for example, by computer, the optimum spacing Τ, τ, and the order of the interior of a lattice 桁G are first determined by the computer, and the determination is made by the requirements required by the statics applied to the lattice 桁G. It is based on the specific length of the manufactured lattice 桁G and the cutting position required for the lattice 桁G. Based on such specifications, then the distance between the bending device 8 and the lower string welding device 9 is changed during the manufacture of the lattice 桁G and the adjustment of the centering devices 19 and 20 is used, and the upper chord welding device 9 and the lower chord welding device 29 are correspondingly manufactured. Time moves. Further, it is necessary to move the upper and lower chord cutting devices 41, 41, and if necessary, the strut line cutting device 36 and the strut projecting portion 弯曲 bending device 4 〇 in a corresponding manner. Since it is necessary to follow these movements without interrupting the production of -21 - 1304001 'so for each movement action P5, P8, P9, P1〇, P12, P13, P 1 4 and P ' 1 4, provide the appropriate servo motor according to The specifications are controllable via a central control unit to time and set the programmed parameters via the computer. It is to be understood that the exemplary embodiments illustrated may be modified within the scope of the general inventive concept, particularly with respect to the design of the lattices G, G'. The lattice 桁 may have only one lower chord U, wherein each of the struts is welded to both ends of the lower chord U and thus extends parallel to each other. • Within the scope of the present invention, it is possible to manufacture a lattice 仅 having only one pillar line Z. According to the invention, the lattice 桁 can have one or two upper chords and/or two lower chords. In a particular embodiment having only one upper chord and only one lower chord, each of the upper and lower chords is alternately welded to the strut line from the outside. In a particular embodiment having two upper chords and two lower chords, the outer portions are welded to the strut lines in pairs, each pair being opposite each other. In the manufacturing direction P1, the projections protruding beyond the strut lines of the lower strings are alternately bent to the right and left. Further, within the scope of the present invention, it is possible to provide a shell plate B having a plurality of sheet metal rings instead of the flat ribs R, wherein the individual sheet metal rings extend parallel to each other and extend perpendicularly to the shell plate B according to the present invention or An optional acute angle can protrude from the plane of the shell plate B. When a vertical sheet metal ring is used, the protrusion E protruding beyond the lower chord U, the struts of the struts Z, Z' must be bent inwardly by the help of the bending means 40 so that the curved projection E1 is bent. Extend parallel to each other. In this application, the lattice plaque is placed on top of the shell plate B in such a manner that each of the projections E' is laterally placed on the vertical metal ring from the outside or the -22-13040, 01 0 ' interior. And you can connect it to the latter. The joining is preferably formed by welding the curved projection P to the sheet metal ring. However, it is also possible within the scope of the invention to establish a clamping connection by pressing the metal ring in the direction of the projection. When a sheet metal ring protruding at an acute angle is used, it will protrude beyond the lower chord U, and the protrusion E of the pillar line Z, Z 1 of the IT is bent outward in such a manner as to be bent by the bending means 40 to bend the protrusion E' Extending into a position parallel to one of the sheet metal rings protruding at an acute angle. In this application, the lattice 桁 is placed on the top of the shell plate B in such a manner as to push each of the projections E' on each of the metal rings protruding at an acute angle, from the outside to the latter. Connect and connect, it is recommended to weld to the latter. Moreover, within the scope of the present invention, it is possible to position the cutting device in such a way as to cut the lattice 桁G, G' from the strands of material: ie, the upper chord is on its welded joint or closest to its welded joint together with The strut lines Z, Z' are cut in a separate cut joint with the strut lines Z, Z'. In this case, it is unnecessary to separately cut the strut line, and the cutting device 36 is not operated. • The correct position for cutting must be selected via a method similar to that used to cut the welded joint K. Finally, within the scope of the present invention, it is possible to secure the curved projection E of the lattice G, to the shell plate B, with the aid of a plurality of clips bent into the shape of the hook. In this case, a strip of metal or wire which is used as a clip is welded to the shell plate B at an appropriate point, and the projection E is fixed at a suitable point later. After placing each lattice 桁G, after the appropriate position, the clip is bent around the curved protrusions E of the strut lines Z, Z1, and the lattice 桁G, -23- 1304001 is clamped on the shell plate B' in this manner. The right place. BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the present invention are based on the exemplified embodiments, which are explained in more detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic side view showing an exemplary embodiment of a device for forming a lattice according to the present invention; Fig. 2 is a detail of a device for bending a projection of a strut line; and Fig. 3 is a cutting device for a lattice Variations; and i Figure 4 is a schematic plan view of a particular embodiment of a device for welding a plurality of lattices on a shell plate in accordance with the present invention. [Main component symbol description] 1 Device 2 Fixed frame 3 Feed device 4 Clamping device 5 Clamping lower string device 6?11531?39 Wheel 7,1 2,32 Rail 8 Bending device 9,29 Welding device 1 0 ?30 frame 13,33 transformer 14 flexible cable 15 winding guide-24- 13,04001

16 Guide 17 Upper 18 Solid 19 Adjust 20 Other 2 1,23,24 Back 22 Spin 25 Guide 26 Hold 27 Another 28 Adjust 29 Lower 32 34 Flex 3 5 Lead 3 6,4 1 Cut 3 7,4 3,44 Leaves 3 8 Car 40 Bend 4 1 1 Upper 45 Stack 46 Bend 48 Reverse 49 Straight lead embedding chord alignment device Centering device Centering device Centering device outside adjustment Centering device Rotary shaft Taxis Rail frame Outer bracket device string Welding device seat rail cable guide device cutting device device rack music device string and lower string cutting device release device curved tool support angle lever - 25-

1304001 » I

50 Blade equipment 5 1 Unit 53 Retraction and cross conveyor unit 54 Stacking storage yard 5 5 Bracket table 56 Combination unit 5 8 Insertion and withdrawal device 59 Grabber 60 Reflow machine 6 1 Welding electrode D, Df line G Grid 桁 0 winding PI manufacturing direction P2, P3, P4 double hoe P14, P 1 4' double 冃丨 j head P 1 9, P20 double weep m head t, t, spacing U, Uf lower string Z, Z' pillar Line-26-

Claims (1)

1304001 X. Patent application scope: No. 94 1 03 1 4 8 "Methods and devices for manufacturing lattice rafts" Patent case (amended in January, 2008) 1. A method for manufacturing lattice 桁 (G, G·), this lattice system Composed of at least one upper chord, at least one lower chord (U, U,), and at least one strut line (Z, Z,) extending back and forth between the upper chord and the lower chord, the strut line being bent in a zigzag manner, at the upper chord and the lower chord The end has curved vertices and each vertex is welded to the upper and lower chords, characterized by: selecting the adjacent curved vertex (S, S,) of the inner struts (Z, Z,) of the lattice 桁 (G, G,) The pitch (τ, τ,) is different, and it is preferable that the distance (T·) between the terminals of the lattice 桁 (G, 〇,) is narrower than the central region of the lattice 桁 (G, G·); Feeding the lower chord (u: U·) into the various feed planes (χ-χ, χ_χ') and placing the grid 桁 (G, 〇,) at the predetermined cutting position, cutting off the continuously generated material strands . 2. The method of claim 1, wherein the lattice direction G(G, G ') is directly observed at the curved vertices via the lower chord (u, U,) and the lower chord (see the manufacturing direction (p丨) The welded joint (K) formed by S') is cut off behind. 3. The method of claim 1, wherein the lattice 桁 (G, 〇,) is cut at a curved apex (S,) of the pillar line (Z, Z') on the lower chord. 4 · As in the method of claim 1 of the patent scope, in which the manufacturing direction (p丨) is observed, 'the lattice 桁(G, G ') is directly at the curved apex (S) via the upper chord (〇) and the upper chord end The formed solder joint is cut off behind. 5. The method of any one of claims 1 to 4, wherein the protrusion (E) protruding beyond the pillar line (Z, Z) of the lower chord (U, U') is outwardly at a predetermined angle or Bend inward away from the plane of the strut line (Z, Z,). 6. The method of claim 5, wherein the bent protrusion (E') is in a horizontal plane when bent outward. 7. The method of any one of claims 1 to 4, wherein in the case where each lattice 桁(G, G') has only one pillar line (Z), wherein the manufacturing direction (P1) is observed The strut line (Z) extends in a vertical plane 'extending the protrusion (E) of the strut line (Z) protruding beyond the lower chord (U, IT) alternately left and right away in a horizontal plane . 8. The method of claim 5, wherein in the case where each lattice 桁 (G, G,) has only one pillar line (Z), wherein the pillar direction (Z1) is observed in the manufacturing direction (P1) Extending in a vertical plane, the protrusions (E) of the strut line (Z) protruding beyond the lower chord (U, U') are alternately bent left and right away from a horizontal plane. 9. The method of claim 6, wherein each lattice G (G·) is connected by a curved protrusion (E') of its pillar line (Z, Z·), and is preferably welded to the shell plate (B). A device for carrying out the method of any one of claims 1 to 9 which has a feeding device of a top string, a lower string and a strut line, and a bending device having a strut line; a welding device for connecting the strut line to the upper and lower strings; having two centering means for fixing the respective curved vertices on the lower chord end with respect to the upper chord welding means; having a cutting for cutting the welded lattice to a certain length a device; and a stacking device; characterized in that a rotatable (P7) centering device (18) is disposed downstream of the bending device (8) for fixing the curved apex (S,) on the lower chord, the centering The device together with the centering device (丨9, 20) for fixing the respective curved apex (S') on the lower chord with respect to the upper chord welding device (9) is rotatable (P7)' for use with respect to the upper chord welding device ( 9) Fixing the curved vertices (s,) 1304001 The centering device (19, 20) on the lower chord is adjustable (P85 P9, Pl〇) parallel to the manufacturing direction (P 1), and their mutual spacing and Fixed centering The distance between (18) and the welding device (29) for the lower chord (U, U') is adjustable parallel to the manufacturing direction (P1) as the predetermined spacing of the curved vertices (S, s,) (Τ, Τ ' a function; an additional cutting device (36) is provided for cutting each curved vertex on the lower end (SJ; a cutting device (36) for bending each curved vertex (S') on the lower end and using The cutting device (41, 41') for the upper (〇) and lower (U, U') and, if necessary, the strut line (Z, Z') is displaceable (P12, P14, P'14) parallel to Manufacturing direction (Pi) as a function of the cutting position required in the lattice G (G) 1 1 · The device of claim 10, wherein the centering device (18) is fixedly connected to the rotatable mounting On the rotating shaft (22) on the frame (2); and the welding device (9) of the upper chord (0) can be displaced parallel to the manufacturing direction (P1) as the pitch of each curved vertex (S, S') (Τ, Τ') function. 1 2. The device of claim 10, wherein the centering device (1 8) is fixedly rotated Mounted on the rotating shaft (22) in a manner parallel to the manufacturing direction (Ρ1) as a function of the predetermined pitch (Τ, Τ') of each curved apex (S, S'), and the upper chord (〇) The welding device (9) is fixedly disposed on the frame (2). i. The device of claim 1, wherein the centering device is controllable by the centering device (19, 20) via a modified gear ratio The apparatus of claim 1 is adjustable. 14. The apparatus of claim 1 wherein a bending device (4〇) is provided which is displaceable (P 13) relative to the cutting device (36) and Downstream of the cutting device (36), the projection (E) for bending the strut line (Z, Z') 1304001 protruding beyond the lower chord (U, IT) exceeds the plane of the strut line (z, Z'). 1 5 - The device of claim 14, wherein for each of the strut lines (Z, Z'), the bending device (40) has a rotatable (pi7) bending tool (4 6) 'alternating The pillar line (z, z,) is supported from the outside or from the inside and the lower string (U, U') is centered; an alternate fit against one of the inner or outer portions of the strut line (Z, Z·) Support (4 8); and a bendable rod (49) that is rotatable (P1 8) at a selectable angle. 16. The device of claim 1, wherein the feeding device (5), the welding device (29), the lower string (U, U') blade device (44), the lower string (U, U,) Both the blade assembly (50) and the strut lines (Z, Z') are height adjustable (P4, P1 1, P16, P'16) to accommodate different feed planes (Χ_Χ, χ, _χ,). 1 7 · As in the device of claim 10, in order to set the distance between the curved apex (s, S,) of the strut line (Ζ, Ζ ') in the bending device (8) (为了, Τ,) and The displacement centering device (1 9, 2 0 ) is respectively provided with an actuating driving welding device (9, 29), a cutting device (36, 41, 41,) and a bending device (40), which are operated via a central control device The function of the predetermined pitch (Τ, Τ') of the curved vertices (S, S') is controllable. 1 8 ·If the device of any of the items 1 to 17 of the patent scope is applied, the lattice 桁 (G') of the curved protrusion (Ε') in Yizhong can be transported to the stacking device (4) 5). A device for carrying out the method of claim 9, wherein the shell plate (Β) is removable from the stacking store (5 4) with the aid of the retracting and cross conveyor device (53) , can be transported in the lateral direction and can be placed on the support table (55); with the help of the parent fork conveyor and the combined device (56), at least one lattice 桁 (G ') can be removed from the stacking device 4 5 ) It can be transported in the direction of the direction (P21) and placed on the shell plate (B); with the help of an embedding and withdrawing device (5 8), it can be matched with the grid (G'). The shell plate (B') is intermittently transferable (P24), the device (58) is movable (P23) parallel to the manufacturing direction (P1) and has a plurality of grippers (59) to the connecting device (60) so that The protrusion (E') of the strut line (Z, Z1) is fastened to the shell plate (B) and can be conveyed away from the connecting device (60). 2 0. The device of claim 19, wherein the connecting device is a welding machine (60), each contact point between the shell plate (B) and the strut line (Z, Z'), There is a pair of welding electrodes (61), wherein the respective pairs of electrodes (6 are disposed in a welding line extending laterally to the manufacturing direction (P1). 2 1. The device of claim 20, wherein The welding machine (6 〇) has a plurality of welding lines arranged at a mutually selectable spacing from one another, wherein it is adapted to accommodate different spacings (τ, T ') in the lattice 桁 (G '), at least one welding line is manufactured The direction (p 1) and the direction opposite to the direction of manufacture (p 1 ) are displaceable. 2 2. The device of claim 20 or 21, wherein the shell plate (b) has a flat longitudinal rib (R) 'The bent protrusion (E 1) of the lattice (G ') can be welded thereto. 23. The device of claim 19, wherein the device is used for a shell plate (... with a strut line ( The joint between the curved protrusions (E') of Z, Z'), and the flexible hook-shaped device is disposed on the shell plate (B In the case of the device of any one of the claims 9-9 to 21, the suitable middle shell plate (B) has a perpendicular to the shell plate (B) and extends parallel to each other and a distance from each other. The sheet metal ring that is configured, and the protrusion (E,) of the pillar line (Z, Z') of the 'G') by the bending device (4 〇) can be bent inwardly into 1304001 perpendicular to the shell One of the extensions of the plate (B) can be placed laterally on each piece of metal ring and can be attached to the combination device (56) with the aid of a cross conveyor and combination device (56). The device of any one of clauses 19 to 21, wherein the shell plate (B) has a sheet metal ring extending at a selectable acute angle to the latter and extending in parallel and at a distance from each other, and by means of a bending device ( 40), the protrusion (E ') of the pillar line (Z, Z ') of the lattice 桁 (G ·) can be bent outward to be parallel to the position of the sheet metal ring extending at an acute angle, by means of a cross conveyor and a combination device ( With the help of 5 6), it can be placed laterally on each piece of metal ring and can be connected to the combination device (56). The device of claim 24, wherein the curved protrusion (EJ is weldable to each of the metal rings. 27. The device of claim 25, wherein the curved protrusion ( E') can be soldered to each metal ring.