Truss welding steel bar welding mechanism

Abstract

The present application discloses a kind of truss welded steel bar welding mechanism, comprising: support, the truss steel bar entering end of the support is front section, truss steel bar output end is rear section;The front section of the support is fixed with fixed platform, the upper surface of the front end of the fixed platform is equipped with to support the upper welding support component of truss, the upper welding support component both sides are symmetrically provided with web bar positioning assembly;Adjustable the upper welding support component is installed with upper welding mechanism, the upper welding mechanism moves up and down by the height adjusting mechanism;In the rear end of the fixed platform is equipped with to weld the lower chord bar of truss lower chord bar, the upper front end of the lower welding mechanism is installed with upper chord bar down component;The rear section of the support is installed with anti-magnetization guide component, the anti-magnetization guide component is equipped with anti-lateral bending component above.The present application provides a kind of truss welded steel bar welding mechanism, and welding efficiency is high, energy saving and environmental protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of truss production, in particular to a truss reinforcing steel bar welding mechanism. BACKGROUND

[0002] Truss is a group of components composed of triangles or a combination of several triangles in a specific way, and these trusses are usually welded by reinforcing steel bars. Steel bar truss uses reinforcing steel as structural material, and is cut into long sections by welding and shearing, and then delivered for use. The cross section of the steel bar truss is triangular, and the whole includes an upper chord located at the upper vertex and two lower chords located at the two bottom vertices, and the two waists are two wave-shaped curved web steels. The wave shape of the web steel is welded to the upper chord and the lower chord respectively, thereby combining a section of steel bar truss as a whole; sometimes, according to the needs of the project, the bottom foot protruding from the position where the lower chord and the web steel valley are welded is folded upwards to form left and right wings, which is convenient for flat welding and other operations. In the production process of the truss, a welding device is needed to weld the web steel with the upper chord and the lower chord.

[0003] In the prior art, the welding mechanism of the truss has low welding efficiency. The truss is welded and formed in the order from front to back. During the welding process, the welding gun is fixed. The electrode is placed on other mechanisms during the welding process, which can easily disperse the current, cause large electrode loss, low effective utilization rate, and low production efficiency. In addition, the truss is transferred and welded by a conveying mechanism. When welding the un-welded part, the front end of the welded part will be deformed, resulting in unqualified finished products and reducing production efficiency. SUMMARY

[0004] An object of the present application is to solve at least the above problems and / or disadvantages and provide at least the advantages described later.

[0005] In order to solve the problems of the prior art, the present application provides a truss welded steel bar welding mechanism, which comprises a support, wherein the truss steel bar entering end of the support is a front section, and the truss steel bar output end is a rear section; a fixed platform is fixed on the front section of the support, the upper surface of the front end of the fixed platform is provided with an upper welding support assembly for supporting the truss, and the two sides of the upper welding support assembly are symmetrically provided with web bar positioning assemblies; an upper welding mechanism is installed above the upper welding support assembly, and the upper welding mechanism moves up and down through a height adjusting mechanism; the height adjusting mechanism comprises a plurality of lifting light rods, lifting guide plates, a fixed plate and a driving assembly fixed on the fixed plate, the lifting light rods are vertically distributed around the fixed platform, the lifting guide plates are slidably arranged in the middle parts of the lifting light rods, the fixed plate is transversely fixed on the top of the lifting light rods, and the bottom of the driving assembly is fixedly connected with the lifting guide plates; a lower welding mechanism for welding the lower chord of the truss is installed at the rear end of the fixed platform, an upper chord pressing assembly is installed at the upper front end of the lower welding mechanism; a demagnetization guide assembly is installed on the rear section of the support, and a side bending prevention assembly and a pressing assembly are arranged above the demagnetization guide assembly.

[0006] Further, the upper welding support assembly comprises a bottom plate, a pair of support plates and an installation plate, the bottom plate is adjustably installed on the fixed platform, the support plates are vertically and symmetrically distributed on the bottom plate, and the installation plate is fixed on the top end of the support plates; a web bar guide plate is installed on the installation plate along the movement direction of the truss steel bar, and a web bar guide cone is arranged at the front end of the web bar guide plate.

[0007] The web bar positioning assembly comprises a first air cylinder, a rotating rod, a first positioning connecting plate, a second positioning connecting plate and a web bar pressing block, the piston rod of the first air cylinder is upwardly elongated, the top end of the piston rod is connected with a fish eye joint, the fish eye joint is hingedly connected with the first positioning connecting plate, the other end of the first positioning connecting plate is fixed on the end of the rotating rod, the rotating rod is rotatably arranged in a bearing seat on the installation plate along the movement direction of the truss steel bar, the other end of the rotating rod is connected with the web bar pressing block through the second positioning connecting plate, and the web bar pressing block is located at the side of the web bar guide plate.

[0008] Further, upper chord welding guide wheels are symmetrically arranged above the two sides of the rear end of the upper welding support assembly, the upper chord welding guide wheels are rotatably installed on the fixed plate, the fixed plate is fixed on the two side edges of the installation plate, and a ring groove for accommodating the lower chord of the truss steel bar is arranged in the middle part of the upper chord welding guide wheel; the upper chord welding guide wheel is arranged behind the web bar pressing block.

[0009] Further, the upper surface of the lifting guide plate is provided with a pair of first transformer mounting frames arranged vertically and symmetrically, and a second cylinder mounting plate is fixed vertically on the lower surface of the lifting guide plate; the upper welding mechanism comprises a first transformer fixed on the first transformer mounting frame, a pair of first welding electrodes respectively mounted in the first electrode mounting seat, and a pair of second cylinders, the first electrode mounting seat is connected with the first transformer through a first soft copper belt, and the second cylinders are symmetrically mounted on the two sides of the second cylinder mounting plate, and the piston rod end of the second cylinder is connected with the first electrode mounting seat;

[0010] A group of arc-shaped adjusting openings 1 are formed on the surface of the second cylinder mounting plate, the second cylinder is mounted on the adjusting plate 1, the adjusting plate 1 is connected with the clamping plate 1 through the slide rod matched with the arc-shaped adjusting opening 1, and the clamping plate 1 is located on the front wall of the second cylinder mounting plate.

[0011] Further, the front wall of the second cylinder mounting plate is provided with an upper chord guide mechanism for guiding the bent truss steel bars, the upper chord guide mechanism comprises an upper chord guide plate fixed on the front wall of the second cylinder mounting plate, and an upper chord guide cone is mounted at the front end of the upper chord guide plate.

[0012] Further, a sleeve consistent with the number of lifting light poles is mounted at the outer edge of the lifting guide plate, the lifting light poles respectively pass through the sleeves, and the lifting guide plate is slidable relative to the lifting light poles through the sleeves; the driving assembly comprises a pair of screw rod lifters and a motor, the screw rod lifters are distributed on the fixed plate, the middle shaft of one of the screw rod lifters is connected with the output shaft of the motor, the other end of the middle shaft of the screw rod lifter is connected with the middle shaft of the other screw rod lifter through a transmission shaft, and the screw rod of the screw rod lifter is fixed on the lifting guide plate.

[0013] Further, the upper surface of the fixed platform rear end is vertically provided with a third cylinder mounting plate, the fixed platform rear end surface is provided with an opening, and the two sides of the support are covered with a lower baffle; the lower welding mechanism comprises a second transformer, a third transformer, a pair of second welding electrodes respectively mounted in the second electrode mounting seat, an intermediate welding electrode, and a pair of third cylinders symmetrically mounted on the two sides of the third cylinder mounting plate; the third transformer is mounted on the bottom wall of the fixed platform, the second transformer is mounted on the support and located below the third transformer, the piston rod of the third cylinder above the opening is connected with the second electrode mounting seat, the second electrode mounting seat is connected with the vertical second transformer connecting seat through the second soft copper belt, the second transformer connecting seat passes through the opening downward and is connected with the second transformer, the intermediate welding electrode is located between the two second welding electrodes, the intermediate welding electrode is mounted on the vertically arranged intermediate electrode plate, the middle part of the intermediate electrode plate is connected with the side surface of the third cylinder mounting plate through the clamping plate, and the bottom of the intermediate electrode plate is fixed on the transformer connecting plate through the opening downward, and the upper and lower ends of the transformer connecting plate are connected with the third transformer and the second transformer respectively;

[0014] The surface of the third cylinder mounting plate is provided with a group of arc-shaped adjusting openings two, the third cylinder is mounted on the adjusting plate two, the adjusting plate two is connected with the clamping plate two through the slide rod matched with the arc-shaped adjusting openings two, and the clamping plate two is located on the rear wall of the third cylinder mounting plate.

[0015] Further, the upper chord lower pressing assembly comprises a fourth cylinder and a pressing plate, the fourth cylinder is fixed on the bottom surface of the lifting guide plate through a fourth cylinder mounting plate, and the piston rod end of the fourth cylinder is connected with the pressing plate.

[0016] Further, the anti-magnetization guide assembly comprises a guide bottom plate, the guide bottom plate is fixed above the rear section of the support through a support frame, the upper surface of the guide bottom plate is covered with a bottom insulation plate, an intermediate guide strip extending along the movement direction of the truss steel bar is mounted on the middle position of the bottom insulation plate, outer guide strips are respectively mounted on the two sides of the intermediate guide strip, the bottom of the outer guide strip is fixed on the bottom insulation plate, and an intermediate insulation plate is mounted between the side wall of the outer guide strip and the side wall of the intermediate guide strip.

[0017] Further, the lifting guide plate rear end is provided with a lateral bending prevention mounting seat extending along the direction of the truss reinforcement, the lateral bending prevention assembly comprises an inverted U-shaped lateral bending prevention fixing plate, an adjusting chain wheel shaft, a left guide block, a right guide block and an adjusting screw rod, the adjusting chain wheel shaft is connected with the lateral bending prevention fixing plate through a pair of limiting plates, the middle part of the adjusting chain wheel shaft is rotatably arranged on the lateral bending prevention mounting seat, the adjusting screw rod is rotatably arranged between the lower end side plates of the lateral bending prevention fixing plate, the front and rear ends of the adjusting screw rod are respectively provided with guide light rods which are arranged between the lower end side plates of the lateral bending prevention fixing plate, the adjusting screw rod is provided with a left adjusting screw sleeve and a right adjusting screw sleeve which are opposite in screw thread, the left and right sliding sleeves are slidably arranged on any one of the guide light rods, the left and right movable plates are arranged on the left adjusting screw sleeve and the left sliding sleeve and the right adjusting screw sleeve and the right sliding sleeve respectively, and the bottoms of the left and right movable plates are connected with the left guide block and the right guide block respectively.

[0018] The pressing assembly comprises a downwardly inclined pressing arm, the front end of the pressing arm is hingedly connected to the rear end of the lateral bending prevention mounting seat, the rear end of the pressing arm is hingedly connected to the piston rod of a fifth cylinder, and the fifth cylinder is also fixed to the rear end of the lateral bending prevention mounting seat, and a pair of pressing wheels are arranged on the pressing arm bottom through a pressing wheel mounting plate.

[0019] The present application at least has the following advantages:

[0020] 1、The upper welding mechanism and the lower welding mechanism are respectively used for welding the upper chord and the lower chord, so that the welding points of the truss reinforcement can be ensured to be welded, the welding omission is avoided, the welding efficiency is ensured, and the production efficiency is improved; meanwhile, the upper welding mechanism moves up and down through the height adjusting mechanism, so that the welding mechanism can be suitable for steel trusses of different sizes, the application range is wide, and the applicability of the welding mechanism is improved.

[0021] 2、The web bar positioning assembly and the upper chord pressing assembly are respectively used for positioning and fixing the web bar and the upper chord of the truss, so that the welding operation of the upper welding mechanism and the lower welding mechanism is facilitated, the truss is prevented from moving during the welding process to cause welding errors, the welding quality is ensured, and the welding efficiency of the welding mechanism is improved.

[0022] 3、The anti-magnetization guide assembly is arranged to prevent the current from being dispersed to positions other than the welding position during welding, the electrode loss is small, the effective utilization rate is significantly improved, and energy saving and environmental protection are facilitated.

[0023] 4、The lateral bending prevention assembly effectively prevents the truss which has been welded at the rear section of the support from deforming, facilitates the smooth subsequent processing operation of the truss, and avoids the reduction of production efficiency caused by unqualified finished products. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Figure 1 is a schematic structural diagram of a truss welding steel bar welding mechanism according to the present application.

[0025] Figure 2 Figure 2 is a schematic structural diagram of a welding mechanism according to the present application. Figure 1 Figure 3 is a partial enlarged schematic structural diagram of the welding mechanism 001.

[0026] Figure 3 Figure 4 is a schematic structural diagram of a truss welding steel bar welding mechanism according to the present application.

[0027] Figure 4 Figure 5 is a schematic structural diagram of an upper welding support assembly and a web bar positioning assembly according to the present application.

[0028] Figure 5 Figure 6 is a schematic structural diagram of an upper welding mechanism according to the present application.

[0029] Figure 6 Figure 7 is a schematic structural diagram of a lower welding mechanism according to the present application.

[0030] Figure 7 Figure 8 is a schematic structural diagram of a second transformer and a third transformer according to the present application.

[0031] Figure 8 Figure 9 is a schematic structural diagram of a rear section of a truss welding steel bar welding mechanism according to the present application.

[0032] Figure 9 Figure 10 is a schematic structural diagram of a welding mechanism according to the present application. Figure 8 Figure 11 is a partial enlarged schematic structural diagram of the welding mechanism 002.

[0033] Figure 10 Figure 12 is a schematic structural diagram of a lateral bending prevention assembly according to the present application.

[0034] B1-Bracket, B2-Fixed platform, B3-Lifting light pole, B4-Lifting guide plate, B5-Fixed plate, B6-Base plate, B7-Supporting plate, B8-Mounting plate, B9-Abdominal bar rib guide plate, B10-Abdominal bar rib guide cone, B11-First air cylinder, B12-Conversion rod, B13-Positioning connecting plate I, B14-Positioning connecting plate II, B15-Abdominal bar rib pressing block, B16-Fisheye joint, B17-Under chord rib welding guide wheel, B18-Fixed plate, B19-First transformer mounting frame, B20-Second air cylinder mounting plate, B21-First transformer, B22-First electrode mounting seat, B23-First welding electrode, B24-Second air cylinder, B25-First soft copper belt, B26-Upper chord rib guide plate, B27-Upper chord rib guide cone, B28-Screw rod lifter, B29-Motor, B30-Third air cylinder mounting plate, B31-Opening, B32-Lower baffle, B33-Second transformer, B34-Third transformer, B35-Second electrode mounting seat, B36-Second welding electrode, B37-Intermediate welding electrode, B38-Third air cylinder, B39-Second soft copper belt, B40-Second transformer connecting seat, B41-Intermediate electrode plate, B42-Transformer connecting plate, B43-Fourth air cylinder, B44-Pressing plate, B45-Fourth air cylinder mounting plate, B46-Guide base plate, B47-Supporting frame, B48-Base insulation plate, B49-Intermediate guide strip, B50-Outer guide strip, B51-Intermediate insulation plate, B52-Side bending prevention mounting seat, B53-Side bending prevention fixed plate, B54-Adjusting sprocket shaft, B55-Left guide block, B56-Right guide block, B57-Adjusting screw rod, B58-Limiting plate, B59-Guide light pole, B60-Left adjusting screw sleeve, B61-Right adjusting screw sleeve, B62-Left sliding sleeve, B63-Right sliding sleeve, B64-Left movable plate, B65-Right movable plate, B66-Pressing arm, B67-Fifth air cylinder, B68-Pressing wheel mounting plate, B69-Pressing wheel, B70-Arc-shaped adjusting opening I, B71-Adjusting plate I, B72-Clinching plate I, B73-Arc-shaped adjusting opening II, B74-Adjusting plate II, B75-Clinching plate II. DETAILED DESCRIPTION

[0035] The present application will be further described in conjunction with the drawings, so that those skilled in the art can implement the present application according to the description and drawings.

[0036] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0037] Figures 1-10The truss welding mechanism of the present application is shown, comprising: a support b1, the truss steel bar entering end of the support b1 is a front section, and the truss steel bar output end is a rear section; a fixed platform b2 is fixed on the front section of the support b1, and an upper welding support assembly for supporting the truss is mounted on the upper surface of the front end of the fixed platform b2, and the two sides of the upper welding support assembly are symmetrically provided with web bar positioning assemblies; an upper welding mechanism is mounted above the upper welding support assembly, and the upper welding mechanism moves up and down through the height adjusting mechanism; the height adjusting mechanism comprises a plurality of lifting light rods b3, a lifting guide plate b4, a fixed plate b5 and a driving assembly fixed on the fixed plate b5, the lifting light rods b3 are vertically distributed around the fixed platform b2, the lifting guide plate b4 is slidably arranged in the middle part of the lifting light rods b3, the fixed plate b5 is transversely fixed on the top of the lifting light rods b3, and the bottom of the driving assembly is fixedly connected with the lifting guide plate b4; a lower welding mechanism for welding the lower chord of the truss is mounted at the rear end of the fixed platform b2, and an upper chord pressing assembly is mounted above the front end of the lower welding mechanism; a demagnetization guide assembly is mounted on the rear section of the support b1, and a side bending prevention assembly and a pressing assembly are arranged above the demagnetization guide assembly.

[0038] In this technical solution, the upper welding mechanism and the lower welding mechanism respectively weld the upper chord and the lower chord, which is beneficial to ensure that the welding points of the truss steel bar are all welded, avoid the occurrence of missed welding, ensure the welding efficiency, and thus improve the production efficiency; at the same time, the upper welding mechanism moves up and down through the height adjusting mechanism, so that the welding mechanism can be applied to steel trusses of different sizes, the application range is wide, and the applicability of the welding mechanism is improved; the web bar positioning assembly and the upper chord pressing assembly respectively position and fix the web bar and the upper chord of the truss, which is beneficial to the welding operation of the upper welding mechanism and the lower welding mechanism, avoids the movement of the truss during welding, prevents welding errors, ensures the welding quality, and improves the welding efficiency of the welding mechanism; the setting of the demagnetization guide assembly prevents the current from being dispersed to other parts during welding, the electrode loss is small, the effective utilization rate is significantly improved, and it is beneficial to energy saving and environmental protection; the side bending prevention assembly effectively prevents the deformation of the truss that has been welded in the rear section of the support, which is beneficial to ensure the smooth operation of the subsequent processing operation of the truss, avoids the occurrence of unqualified products, and reduces the production efficiency.

[0039] In another example, the upper welding support assembly comprises a base plate b6, a pair of support plates b7 and a mounting plate b8, the base plate b6 is adjustably mounted on the fixed platform b2, the support plates b7 are vertically and symmetrically distributed on the base plate b6, and the mounting plate b8 is fixed at the top end of the support plate b7; the mounting plate b8 is provided with a web bar guide plate b9 along the direction of the truss steel bar movement, and the front end of the web bar guide plate b9 is provided with a web bar guide cone b10; the base plate b6 drives the mounting plate b8 to move up and down, thereby adjusting the height of the upper welding support assembly, the lower chord of the truss moves on the mounting plate b8, and the web bar guide plate b10 guides the web bar; the adjustable base plate b6 can be achieved by using a linear drive device such as a cylinder, and can also be achieved by using a screw rod to adjust the up and down movement of the base plate b6 while saving space;

[0040] The web bar positioning assembly comprises a first cylinder b11 mounted on the fixed platform b2, a rotating rod b12, a positioning connecting plate one b13, a positioning connecting plate two b14 and a web bar pressing block b15, the piston rod of the first cylinder b11 is upwardly elongated and connected with a fish eye joint b16 at the top end, the fish eye joint b16 is hinged to the positioning connecting plate one b13, the other end of the positioning connecting plate one b13 is fixed on the end of the rotating rod b12, the rotating rod b12 is rotatably arranged in the bearing seat on the mounting plate b8 along the direction of the truss steel bar movement of the mounting plate b8, the other end of the rotating rod b12 is connected with the web bar pressing block b15 through the positioning connecting plate two b14, and the web bar pressing block b15 is located at the side of the web bar guide plate b10. The first cylinder b11 drives the fish eye joint b16 to move up and down, thereby causing the hinged positioning connecting plate one b13 to swing, and the positioning connecting plate one b13 drives the rotating rod b12 to swing in the bearing seat, and the web bar pressing block b15 swings to realize the positioning and release of the web bar.

[0041] In another example, two lower chord welding guide wheels b17 are symmetrically arranged above the two sides of the rear end of the upper welding support assembly, the lower chord welding guide wheels b17 are rotatably mounted on a fixed plate b18, the fixed plate b18 is fixed on the two side edges of the mounting plate b8, and a ring groove for accommodating the lower chord of the truss steel bar is arranged in the middle of the lower chord welding guide wheel b17; the lower chord welding guide wheel b17 is arranged behind the web bar pressing block b15.

[0042] In another example, the lifting guide plate b4 is provided with a pair of first transformer mounting frames b19 arranged vertically and symmetrically on the upper surface, and a second cylinder mounting plate b20 is fixed vertically on the lower surface; the upper welding mechanism comprises a first transformer b21 fixed on the first transformer mounting frame b19, a pair of first welding electrodes b23 respectively mounted in first electrode mounting seats b22, and a pair of second cylinders b24, the first electrode mounting seats b22 are connected with the first transformer b21 through first soft copper belts b25, the second cylinders b24 are symmetrically mounted on both sides of the second cylinder mounting plate b20, and the piston rod ends of the second cylinders b24 are connected with the first electrode mounting seats b22; the second cylinders b24 drive the first welding electrodes b23 to move to the welding points of the upper chord, the first welding electrodes b23 are powered to weld after contacting the welding points of the upper chord, and after welding, the second cylinders b24 drive the first welding electrodes b23 to separate in the reverse direction, and an external conveying mechanism pulls the truss steel bar to move forward to weld the next welding point.

[0043] The second cylinder mounting plate b20 is provided with a group of arc-shaped adjusting openings b70 on the surface, the second cylinders b24 are mounted on adjusting plates b71, the adjusting plates b71 are connected with clamping plates b72 through slides matched with the arc-shaped adjusting openings b70, and the clamping plates b72 are located on the front wall of the second cylinder mounting plate b20. The second cylinders b24 can be adjusted in angle through the cooperation of the arc-shaped adjusting openings b70, the slides and the clamping plates b72, so as to ensure the welding accuracy and be suitable for welding truss steel bars of different specifications.

[0044] In another example, the front wall of the second cylinder mounting plate b20 is provided with an upper chord guide mechanism for guiding the bent truss steel bar, the upper chord guide mechanism comprises an upper chord guide plate b26 fixed on the front wall of the second cylinder mounting plate b20, and an upper chord guide cone b27 is mounted at the front end of the upper chord guide plate b26. The upper chord guide cone b27 and the upper chord guide plate b26 cooperate to realize the guiding effect on the truss upper chord.

[0045] In another example, sleeves consistent with the number of the lifting light poles b3 are installed on the outer edge of the lifting guide plate b4, the lifting light poles b3 respectively pass through the sleeves, and the lifting guide plate b4 is slidable to the lifting light poles b3 through the sleeves; the driving assembly comprises a pair of screw rods b28 and a motor b29, the screw rods b28 are distributed on the fixed plate b5, the middle shaft of one of the screw rods b28 is connected with the output shaft of the motor b29, the other end of the middle shaft of the screw rod b28 is connected with the middle shaft of the other screw rod b28 through a transmission shaft, and the screw rods b28 are fixed on the lifting guide plate b4. The motor b29 drives the middle shaft of the screw rod b28 to rotate, and the transmission shaft is arranged to make the screw rods b28 move synchronously, thereby driving the lifting guide plate b4 to move on the lifting light poles b3.

[0046] In another example, a third cylinder mounting plate b30 is vertically arranged on the upper surface of the rear end of the fixed platform b2, an opening b31 is formed on the surface of the rear end of the fixed platform b2, and the two sides of the support b1 are covered with lower baffles b32; the lower welding mechanism comprises a second transformer b33, a third transformer b34, a pair of second welding electrodes b36 respectively mounted in a second electrode mounting seat b35, an intermediate welding electrode b37, and a pair of third cylinders b38 symmetrically mounted on the two sides of the third cylinder mounting plate b30; the third transformer b34 is mounted on the bottom wall of the fixed platform b2, the second transformer b33 is mounted on the support b1 and located below the third transformer b34, the piston rod of the third cylinder b38 located above the opening b31 is connected with the second electrode mounting seat b35, the second electrode mounting seat b35 is connected with a vertical second transformer connecting seat b40 through a second soft copper belt b39, the second transformer connecting seat b40 passes through the opening b31 downwardly and is connected with the second transformer b33, the intermediate welding electrode b37 is located between the two second welding electrodes b36, the intermediate welding electrode b36 is mounted on a vertically arranged intermediate electrode plate b41, the middle part of the intermediate electrode plate b41 is connected with the side of the third cylinder mounting plate b30 through a clamping plate, the bottom of the intermediate electrode plate b41 passes through the opening b31 downwardly and is fixed on a transformer connecting plate b42, and the upper and lower ends of the transformer connecting plate b42 are respectively connected with the third transformer b34 and the second transformer b33. The third cylinder b38 drives the second welding electrode b36 to move to the welding point of the web member and the lower chord member of the truss, so that the two second welding electrodes b36 respectively contact the welding point and the intermediate welding electrode b37 for welding, after the welding is completed, the third cylinder b38 reversely drives the second welding electrode b36 to move away from the intermediate welding electrode b37, and an external conveying mechanism pulls the truss steel bars to move forward for welding of the next welding point.

[0047] The third cylinder mounting plate b30 has a set of arc-shaped adjusting openings b73 on its surface. The third cylinder b38 is mounted on an adjusting plate b74, which is connected to a clamping plate b75 on the rear wall of the third cylinder mounting plate b30 through a slide rod matched with the arc-shaped adjusting openings b73. The third cylinder b38 can be adjusted in angle through the cooperation of the arc-shaped adjusting openings b73, the slide rod and the clamping plate b75, so as to ensure the welding accuracy and adapt to the welding of truss steels of different specifications.

[0048] In another example, the top chord pressing assembly includes a fourth cylinder b43 and a pressing plate b44. The fourth cylinder b43 is fixed on the bottom surface of the lifting guide plate b4 through a fourth cylinder mounting plate b45, and the piston rod end of the fourth cylinder b43 is connected with the pressing plate b44. The fourth cylinder b43 drives the pressing plate b44 to move up and down, so as to realize the pressing and fixing operation on the top chord of trusses of different specifications.

[0049] In another example, the anti-magnetization guide assembly includes a guide bottom plate b46, which is fixed above the rear section of the support b1 through a support frame b47. The upper surface of the guide bottom plate b46 is covered with a bottom insulation plate b48, and an intermediate guide strip b49 extending along the movement direction of the truss steel is mounted on the middle position of the bottom insulation plate b48. Outer guide strips b50 are respectively mounted on the two sides of the intermediate guide strip b49, the bottom of the outer guide strips b50 is fixed on the bottom insulation plate b48, and the side walls of the outer guide strips b50 are provided with intermediate insulation plates b51 between the side walls of the intermediate guide strip b49. When the truss moves on the guide bottom plate b46, the bottom insulation plate b48 and the intermediate insulation plate b51 cooperate to prevent magnetization and avoid dispersing the welding current.

[0050] In another example, the lifting guide plate b4 rear end is provided with a lateral bending prevention mounting seat b52 extending along the direction of the truss reinforcement, the lateral bending prevention assembly includes an inverted U-shaped lateral bending prevention fixing plate b53, an adjusting chain wheel shaft b54, a left guide block b55, a right guide block b56 and an adjusting screw b57, the adjusting chain wheel shaft b54 is connected with the lateral bending prevention fixing plate b53 through a pair of limiting plates b58, the middle part of the adjusting chain wheel shaft b54 is rotatably arranged on the lateral bending prevention mounting seat b52, the adjusting screw b57 is rotatably arranged between the lower end side plates of the lateral bending prevention fixing plate b53, the front and rear ends of the adjusting screw b57 are respectively provided with guide light rods b59 which are rotatably arranged between the lower end side plates of the lateral bending prevention fixing plate b53, the adjusting screw b57 is provided with a left adjusting screw sleeve b60 and a right adjusting screw sleeve b61 which are opposite in thread, the left and right sliding sleeves b62 and b63 are slidably arranged on the guide light rods b59, the left and right movable plates b64 and b65 are arranged on the left adjusting screw sleeve b60 and the right adjusting screw sleeve b61, the bottoms of the left and right movable plates b64 and b65 are respectively connected with the left and right guide blocks b55 and b56; the ends of the adjusting chain wheel shaft b54 and the adjusting screw b57 are provided with hand wheels for rotation, the left and right movements of the lateral bending prevention fixing plate b53 are driven by the adjusting chain wheel shaft b54, so that the left and right guide blocks b55 and b56 move left and right as a whole; the left and right guide blocks b55 and b56 are driven to move towards each other and away from each other by the cooperation of the adjusting screw b57 and the left and right adjusting screw sleeves b60 and b61, thereby effectively preventing the truss from lateral bending after welding.

[0051] The pressing assembly includes a downwardly inclined lower pressing arm b66, the front end of the lower pressing arm b66 is hingedly connected to the rear end of the lateral bending prevention mounting seat b52, the rear end is hingedly connected to the piston rod of a fifth cylinder b67, the fifth cylinder b67 is also fixed to the rear end of the lateral bending prevention mounting seat b52, a pair of pressing wheels b69 are arranged on the lower pressing arm b66 through a pressing wheel mounting plate b68, and the pressing wheels b69 are arranged along the movement direction of the truss reinforcement. The pressing wheels b69 press the welded truss to prevent the truss from deviating, which is conducive to the accurate entry of the truss into the subsequent shearing station, and the setting of the fifth cylinder b67 is conducive to adjusting the pressing force of the pressing wheels b69 on the truss.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0053] In addition, in the description of the present invention, the term "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0054] It should be noted that, if the description and claims of the present application and the above-mentioned drawings relate to the terms "first", "second", etc., they are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] Furthermore, in this application, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0056] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the invention.

Claims

1. A truss welding steel bar welding mechanism characterized by, Comprise: Support (b1), the truss steel bar entering end of the support (b1) is the front section, and the truss steel bar output end is the rear section; The front section of the support (b1) is fixed with a fixed platform (b2), and the upper surface of the front end of the fixed platform (b2) is provided with an upper welding support assembly for supporting the truss, and the two sides of the upper welding support assembly are symmetrically provided with web bar rib positioning assemblies;Adjustable upper welding mechanism is installed above the upper welding support assembly, and the upper welding mechanism moves up and down through the height adjusting mechanism;The height adjusting mechanism comprises a plurality of lifting light rods (b3), lifting guide plates (b4), fixed plates (b5) and driving assemblies fixed on the fixed plates (b5), the lifting light rods (b3) are vertically distributed around the fixed platform (b2), the lifting guide plates (b4) are slidably arranged in the middle of the lifting light rods (b3), the fixed plates (b5) are transversely fixed on the top of the lifting light rods (b3), and the bottom of the driving assembly is fixedly connected with the lifting guide plates (b4);A lower welding mechanism for welding the lower chord rib of the truss is installed at the rear end of the fixed platform (b2), and an upper chord rib pressing assembly is installed above the front end of the lower welding mechanism;A demagnetization guide assembly is installed on the rear section of the support (b1), and a lateral bending prevention assembly and a pressing assembly are arranged above the demagnetization guide assembly; A pair of first transformer mounting frames (b19) are vertically and symmetrically arranged on the upper surface of the lifting guide plate (b4), and a second air cylinder mounting plate (b20) is vertically fixed on the lower surface of the lifting guide plate (b4);A sleeve consistent with the number of lifting light rods (b3) is installed at the outer edge of the lifting guide plate (b4), and the lifting light rods (b3) respectively penetrate through the sleeves, and the lifting guide plate (b4) is slidable to the lifting light rods (b3) through the sleeves.

2. A truss welding bar welding mechanism as claimed in claim 1, characterized in that, The upper welding support assembly comprises a bottom plate (b6), a pair of support plates (b7) and a mounting plate (b8), the bottom plate (b6) is adjustably installed on the fixed platform (b2), the support plates (b7) are vertically and symmetrically distributed on the bottom plate (b6), and the mounting plate (b8) is fixed on the top end of the support plate (b7);The web rib guide plate (b9) is installed on the mounting plate (b8) along the movement direction of the truss steel bar, and the web rib guide plate (b9) is provided with a web rib guide cone (b10) at the front end. The web bar muscle positioning assembly comprises a first cylinder mounted on the fixed platform, a rotating rod, a positioning connecting plate one, a positioning connecting plate two and a web bar muscle pressing block, the piston rod of the first cylinder is upwardly extended and the top end is connected with a fish eye joint, the fish eye joint is hinged with the positioning connecting plate one, the other end of the positioning connecting plate one is fixed on the end of the rotating rod, the rotating rod is rotatably arranged in the bearing seat on the mounting plate along the movement direction of the truss steel bars, the other end of the rotating rod is connected with the web bar muscle pressing block through the positioning connecting plate two, and the web bar muscle pressing block is located at the side of the web bar muscle guide plate.

3. A truss welding bar welding mechanism according to claim 2, wherein The lower chord bar welding guide wheels are symmetrically arranged above the two sides of the rear end of the upper welding support assembly, the lower chord bar welding guide wheels are rotatably mounted on the fixed plates, the fixed plates are fixed on the two side edges of the mounting plate, and a ring groove for accommodating the lower chord bars of the truss steel bars is arranged in the middle of the lower chord bar welding guide wheels.

4. The truss welding rebar welding mechanism of claim 1, wherein, The upper welding mechanism comprises a first transformer mounted on the first transformer mounting frame, a pair of first welding electrodes mounted in the first electrode mounting seats and a pair of second cylinders, the first electrode mounting seats are connected with the first transformer through first soft copper belts, and the second cylinders are symmetrically and adjustably mounted on the two sides of the second cylinder mounting plate. A group of arc adjusting openings are arranged on the surface of the second cylinder mounting plate, the second cylinders are mounted on the adjusting plates, the adjusting plates are connected with the clamping plates through the slides matched with the arc adjusting openings, and the clamping plates are located on the front wall of the second cylinder mounting plate.

5. A truss welding bar welding mechanism according to claim 4, wherein The front wall of the second cylinder mounting plate is provided with an upper chord bar guide mechanism for guiding the bent truss steel bars, the upper chord bar guide mechanism comprises an upper chord bar guide plate fixed on the front wall of the second cylinder mounting plate, and an upper chord bar guide cone is mounted at the front end of the upper chord bar guide plate.

6. The truss welding rebar welding mechanism of claim 1, wherein, The driving assembly includes a pair of screw rod lifters (b28) and a motor (b29), the screw rod lifters (b28) are distributed on the fixed plate (b5), the central axis of one of the screw rod lifters (b28) is connected with the output shaft of the motor (b29), the other end of the central axis of the screw rod lifter (b28) is connected with the central axis of the other screw rod lifter (b28) through a transmission shaft, and the screw rod bottom of the screw rod lifter (b28) is fixed on the lifting guide plate (b4).

7. The truss welding rebar welding mechanism of claim 1, wherein, The upper surface of the rear end of the fixed platform (b2) is vertically provided with a third cylinder mounting plate (b30), the rear end surface of the fixed platform (b2) is provided with an opening (b31), and the two sides of the support (b1) are covered with a lower baffle (b32); the lower welding mechanism includes a second transformer (b33), a third transformer (b34), a pair of second welding electrodes (b36) respectively installed in a second electrode mounting seat (b35), an intermediate welding electrode (b37), and a pair of third cylinders (b38) symmetrically installed on the two sides of the third cylinder mounting plate (b30); the third transformer (b34) is installed on the bottom wall of the fixed platform (b2), the second transformer (b33) is installed on the support (b1) and located below the third transformer (b34), the piston rod of the third cylinder (b38) located above the opening (b31) is connected with the second electrode mounting seat (b35), the second electrode mounting seat (b35) is connected with a vertical second transformer connecting seat (b40) through a second soft copper belt (b39), the second transformer connecting seat (b40) passes through the opening (b31) downwardly and is connected with the second transformer (b33), the intermediate welding electrode (b37) is located between the two second welding electrodes (b36), the intermediate welding electrode (b37) is installed on a vertical intermediate electrode plate (b41), the middle part of the intermediate electrode plate (b41) is connected with the side surface of the third cylinder mounting plate (b30) through a clamping plate, the bottom of the intermediate electrode plate (b41) is fixed on a transformer connecting plate (b42) through the opening (b31), and the upper and lower ends of the transformer connecting plate (b42) are connected with the third transformer (b34) and the second transformer (b33) respectively; The surface of the third cylinder mounting plate (b30) is provided with a group of arc-shaped adjusting openings two (b73), the third cylinder (b38) is installed on an adjusting plate two (b74), the adjusting plate two (b74) is connected with a clamping plate two (b75) through a slide rod matched with the arc-shaped adjusting opening two (b73), and the clamping plate two (b75) is located on the rear wall of the third cylinder mounting plate (b30).

8. The truss welding rebar welding mechanism of claim 1, wherein, The upper chord lower pressing assembly comprises a fourth cylinder (b43) and a pressing plate (b44), the fourth cylinder (b43) is fixed on the bottom surface of the lifting guide plate (b4) through a fourth cylinder mounting plate (b45), and the piston rod end of the fourth cylinder (b43) is connected with the pressing plate (b44).

9. The truss welding rebar welding mechanism of claim 1, wherein, The anti-magnetization guide assembly comprises a guide bottom plate (b46), the bottom of the guide bottom plate (b46) is fixed above the rear section of the support (b1) through a support frame (b47), the upper surface of the guide bottom plate (b46) is covered with a bottom insulation plate (b48), the middle part of the bottom insulation plate (b48) is provided with a middle guide strip (b49) extending along the movement direction of the truss steel bar, the two sides of the middle guide strip (b49) are respectively provided with outer guide strips (b50), the bottom of the outer guide strips (b50) is fixed on the bottom insulation plate (b48), and the side walls of the outer guide strips (b50) and the side walls of the middle guide strip (b49) are provided with middle insulation plates (b51).

10. A truss steel bar welding mechanism according to claim 1, characterized in that: The rear end of the lifting guide plate (b4) is provided with an anti-lateral bending mounting seat (b52) extending along the direction of the truss steel bar, the anti-lateral bending assembly comprises an inverted U-shaped anti-lateral bending fixing plate (b53), an adjusting chain wheel shaft (b54), a left guide block (b55), a right guide block (b56) and an adjusting screw (b57), the adjusting chain wheel shaft (b54) is connected with the anti-lateral bending fixing plate (b53) through a pair of limiting plates (b58), the middle part of the adjusting chain wheel shaft (b54) is rotatably arranged on the anti-lateral bending mounting seat (b52), the adjusting screw (b57) is rotatably arranged between the lower end side plates of the anti-lateral bending fixing plate (b53), the front and rear ends of the adjusting screw (b57) are respectively provided with guide light rods (b59) which are arranged between the lower end side plates of the anti-lateral bending fixing plate (b53), the adjusting screw (b57) is provided with a left adjusting screw sleeve (b60) and a right adjusting screw sleeve (b61) with opposite threads, a left sliding sleeve (b62) and a right sliding sleeve (b63) which can slide are arranged on any one of the guide light rods (b59), a left movable plate (b64) is arranged on the left adjusting screw sleeve (b60) and the left sliding sleeve (b62), a right movable plate (b65) is arranged on the right adjusting screw sleeve (b61) and the right sliding sleeve (b63), and the bottoms of the left movable plate (b64) and the right movable plate (b65) are respectively connected with the left guide block (b55) and the right guide block (b56); The pressing assembly comprises a downwardly inclined lower pressing arm (b66), the front end of which is hinged to the rear end of the anti-side-bending mounting seat (b52), and the rear end of which is hinged to the piston rod of a fifth cylinder (b67), which is also fixed to the rear end of the anti-side-bending mounting seat (b52), and a pair of pressing wheels (b69) are installed on the bottom of the lower pressing arm (b66) through a pressing wheel mounting plate (b68), which are arranged along the movement direction of the truss reinforcement.

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