Follow-up welding device and method

Abstract

The invention belongs to the technical field of steel bar floor support plate machining, and discloses a follow-up welding device and method. The follow-up welding device comprises a rack, a feeding device, a fixed welding assembly, a movable welding assembly and a transformer. A to-be-welded steel bar truss and a bottom plate are both arranged on the rack. The feeding device is arranged on the rack in a sliding mode and used for conducting synchronous stepping conveying on a steel bar truss and a bottom plate. The fixed welding assembly is fixedly arranged on the rack and is used for welding the steel bar truss and the bottom plate at the first position; the movable welding assembly is arranged on the feeding device and used for welding the steel bar truss and the bottom plate in the stepping conveying process. The fixed welding assembly and the movable welding assembly are both electrically connected with the transformer. Alternate welding of the fixed welding assembly and the movable welding assembly is achieved, impact on a power grid in the welding process is reduced, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar floor deck processing, and in particular to a follow-up welding device and method. Background Art

[0002] Steel bar floor decking, also known as steel bar truss floor decking, usually includes steel bar trusses and galvanized sheets, which are assembled by welding at multiple welding points to form a steel bar floor decking.

[0003] When welding between steel trusses and galvanized sheets, multiple steel trusses need to be welded on one galvanized sheet, and multiple trusses are usually welded simultaneously to improve welding efficiency. In traditional bridge loop welding equipment, a transformer is required for every two welding points, and three transformers are required for welding three steel trusses and galvanized sheets. Therefore, the cost of welding facilities is high, the impact on the power grid is large during welding, and each group of welding points is manually operated to move step by step, which is inefficient. Summary of the invention

[0004] The object of the present invention is to provide a follow-up welding device and method to solve the problems of large impact on the power grid and low working efficiency during the welding process of steel bar floor decking, while saving costs.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A follow-up welding device, comprising:

[0007] A frame, a steel bar truss to be welded and a bottom plate are arranged on the frame;

[0008] A feeding device, the feeding device is slidably arranged on the frame, and the feeding device is used for synchronously stepping and conveying the steel bar truss and the bottom plate;

[0009] A fixed welding assembly, which is fixed on the frame and welds the steel bar truss and the bottom plate at the first position;

[0010] A mobile welding assembly, which is arranged on the feeding device and welds the steel bar truss and the bottom plate during the stepping conveying process;

[0011] A transformer, the fixed welding assembly and the movable welding assembly are both electrically connected to the transformer.

[0012] In some embodiments, the feeding device comprises:

[0013] A slide plate, wherein the slide plate is slidably mounted on the frame, and the movable welding assembly is arranged on the slide plate;

[0014] A stepper drive assembly, the stepper drive assembly is disposed on the frame, and the stepper drive assembly is configured to drive the slide plate to reciprocate between the first position and the second position;

[0015] A clamping mechanism is arranged on the slide plate, and is used to clamp and fix the steel bar truss and the bottom plate.

[0016] In some embodiments, two clamping mechanisms are provided, and the two clamping mechanisms are symmetrically arranged on the slide plate to clamp the steel bar truss and two sides of the bottom plate.

[0017] In some embodiments, the clamping mechanism comprises:

[0018] A clamping and fixing seat, wherein the clamping and fixing seat is arranged on the slide plate, and a guide shaft is arranged on the clamping and fixing seat;

[0019] A first lifting drive member, wherein the first lifting drive member is disposed at the top end of the guide shaft, and an output end of the first lifting drive member is disposed vertically downward;

[0020] An upper pressing plate, the upper pressing plate being arranged at the output end of the first lifting drive member, and a pressing block being arranged on the lower surface of the upper pressing plate;

[0021] A lower clamping plate is arranged on the slide plate, and the lower clamping plate is arranged opposite to the clamping block. The first lifting drive member drives the clamping block to descend and presses the steel bar truss and the bottom plate onto the lower clamping plate.

[0022] In some embodiments, along the stepping conveying direction of the steel truss and the base plate, the distance between the first position and the second position is equal to the distance between two adjacent base feet on the steel truss, and the distance between the movable welding assembly and the clamping mechanism is equal to the distance between two adjacent base feet on the steel truss.

[0023] In some embodiments, the fixed welding assembly includes four groups of upper electrode mechanisms and two groups of lower electrode mechanisms, the mobile welding assembly includes two groups of upper electrode mechanisms and one group of lower electrode mechanisms, the transformer includes a first transformer and a second transformer, the two groups of upper electrode mechanisms in the fixed welding assembly and the two groups of upper electrode mechanisms in the mobile welding assembly are electrically connected to the first transformer, and the other two groups of upper electrode mechanisms in the fixed welding assembly are electrically connected to the second transformer.

[0024] In some embodiments, the follow-up welding device further includes a welding bracket for mounting the upper electrode mechanism of the fixed welding assembly and the movable welding assembly, and the welding bracket includes:

[0025] A supporting column, the bottom end of which is fixed on the frame or on the slide.

[0026] A supporting beam, the two ends of which are respectively connected to the top ends of the two supporting columns;

[0027] A dovetail frame is installed in a sliding manner with the support beam and can be locked at any position on the support beam. The sliding direction of the dovetail frame is perpendicular to the stepping conveying direction. The upper electrode mechanism is fixedly connected to the dovetail frame.

[0028] In some embodiments, the upper electrode mechanism comprises:

[0029] An upper fixing seat, the upper fixing seat being arranged on the welding bracket;

[0030] A second lifting drive member, the second lifting drive member is arranged on the upper fixed seat, and an output end of the second lifting drive member vertically slides downward and penetrates the upper fixed seat;

[0031] A guide column, the top end of which is connected to the output end of the second lifting drive component, a connecting seat is arranged at the bottom end of the guide column, an upper electrode seat is arranged on the connecting seat, an electrode strip is arranged on the upper electrode seat, and the connecting seat is electrically connected to the first transformer or the second transformer.

[0032] In some embodiments, the lower electrode mechanism comprises:

[0033] A lower electrode seat, wherein the lower electrode seat is provided with a groove and the lower electrode seat is fixed on the slide or the frame;

[0034] Electrode blocks, the tops of the groove walls on both sides of the groove are provided with the electrode blocks, and the two electrode blocks are respectively provided corresponding to the two electrode strips;

[0035] An insulating plate is arranged at the bottom end of the lower electrode seat to isolate the frame or the slide plate.

[0036] In some embodiments, a first sliding component is provided on the slide plate at a position corresponding to the welding bracket, and a second sliding component is provided on the slide plate at a position corresponding to the lower electrode mechanism.

[0037] The present invention further provides a follow-up welding method. According to the follow-up welding device provided by the present invention, the follow-up welding method comprises the following steps:

[0038] S1, the steel truss and the bottom plate are both arranged on the frame, and the first foot of the steel truss is located at a first position;

[0039] S2, moving the welding assembly to weld the steel bar truss and the bottom plate at the first position;

[0040] S3, the fixed welding assembly welds the steel bar truss and the bottom plate at the first position; the feeding device drives the movable welding assembly to move toward the second position, along the stepping conveying direction of the steel bar truss and the bottom plate, the second position is located upstream of the first position;

[0041] S4, when the mobile welding assembly reaches the second position, the fixed welding assembly has just completed welding; the feeding device again clamps the steel truss and the bottom plate and moves stepwise toward the first position, while the mobile welding assembly welds the steel truss and the bottom plate;

[0042] S5, when the mobile welding assembly reaches the first position again, the mobile welding assembly has just completed welding; return to step S3 until the welding of the steel bar truss and the bottom plate is completed.

[0043] Beneficial effects of the present invention:

[0044] The follow-up welding device provided by the present invention has a fixed welding assembly fixedly arranged on a frame and a mobile welding assembly arranged on a feeding device. The fixed welding assembly can weld the steel truss and the base plate that have stepped to a first position, and the mobile welding assembly can weld the steel truss and the base plate during the stepping process of the steel truss and the base plate. The fixed welding assembly and the mobile welding assembly realize alternating welding. For steel floor decking plates of the same specification, the alternating welding method reduces the impact of the transformer on the power grid during the welding process, greatly improves work efficiency, saves the number of transformers used, and reduces production costs.

[0045] The follow-up welding method provided by the present invention reduces the impact of the transformer on the power grid during the welding process by alternately performing welding work with a fixed welding assembly and a mobile welding assembly, greatly improves work efficiency, saves the number of transformers used, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a structural schematic diagram of a follow-up welding device provided by an embodiment of the present invention from a first viewing angle;

[0047] Figure 2 is a structural schematic diagram of a follow-up welding device provided by an embodiment of the present invention from a second viewing angle;

[0048] Figure 3 It is a structural schematic diagram of a stepping mechanism in a follow-up welding device provided in an embodiment of the present invention;

[0049] Figure 4It is a schematic diagram of the installation structure of the mobile welding assembly on the stepping mechanism in the follow-up welding device provided by an embodiment of the present invention;

[0050] Figure 5 It is a structural schematic diagram of a clamping mechanism in a follow-up welding device provided in an embodiment of the present invention;

[0051] Figure 6 It is a structural schematic diagram of an upper electrode mechanism in a follow-up welding device provided in an embodiment of the present invention;

[0052] Figure 7 It is a structural schematic diagram of the lower electrode mechanism in the follow-up welding device provided in an embodiment of the present invention;

[0053] Figure 8 yes Figure 1 A-direction view in the figure;

[0054] Fig. 9 It is a schematic diagram of the structure of a reinforced concrete floor deck involved in an embodiment of the present invention.

[0055] In the figure:

[0056] 100, steel truss; 101, footing; 200, bottom plate;

[0057] 1. Frame;

[0058] 2. Feeding device; 21. Slide plate; 22. Stepping drive assembly; 221. Stepping drive member; 222. Motor bracket; 223. Coupling; 224. Ball screw; 225. Screw support seat; 226. Stepping screw base; 23. Clamping mechanism; 231. Clamping fixed seat; 232. First lifting drive member; 233. Upper clamping plate; 234. Lower clamping plate; 235. Guide shaft; 236. Clamping block; 237. Cylinder connecting plate; 24. Support roller;

[0059] 3. Fix welding components;

[0060] 4. Mobile welding assembly; 41. Upper electrode mechanism; 411. Upper fixed seat; 412. Second lifting drive member; 413. Guide column; 414. Connecting seat; 415. Upper electrode seat; 416. Electrode strip; 417. Cylinder seat; 42. Lower electrode mechanism; 421. Lower electrode seat; 422. Electrode block; 423. Insulating plate;

[0061] 5. Transformer; 51. First transformer; 52. Second transformer;

[0062] 6. Welding bracket; 61. Support column; 62. Support beam; 63. Angle support; 64. Dovetail bracket;

[0063] 7. first sliding assembly; 71. first sliding block; 72. first sliding rail;

[0064] 8. Second sliding assembly; 81. Second sliding block; 82. Second sliding rail. DETAILED DESCRIPTION

[0065] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0066] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0068] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0069] The embodiment of the present invention provides a follow-up welding device, such as Fig. 9, which is used to weld multiple steel trusses 100 on a base plate 200 to form a steel floor deck, wherein the base plate 200 is generally a galvanized plate, and multiple base feet 101 of the steel trusses 100 are close to the surface of the base plate 200, and the contact parts between the base feet 101 and the base plate 200 are welded and fixed. In this embodiment, three steel trusses 100 are welded in parallel in the width direction (Y direction) of the steel floor deck, and each steel truss 100 has multiple base feet 101 along the length direction (X direction) of the base plate 200, which need to be welded in sequence. In the prior art, the base feet 101 of three steel trusses 100 at the same cross section are welded synchronously, and three transformers 5 need to work at the same time, which has a great impact on the power grid. The structures of the base plate 200 and the steel trusses 100 are irregular, which is inconvenient for positioning and automatic displacement, and requires manual assistance, low work efficiency, and high labor intensity.

[0070] In order to solve the above technical problems, Figure 1-Figure 8 The embodiment of the present invention provides a follow-up welding device, including a frame 1, a feeding device 2, a fixed welding assembly 3, a mobile welding assembly 4 and a transformer 5. The steel truss 100 and the bottom plate 200 to be welded are both arranged on the frame 1 and initially positioned so that the first foot 101 of the steel truss 100 is located at a first position, so as to facilitate sequential welding steps, such as Figure 1 The positive direction of the middle X direction is the stepping conveying direction of the steel truss 100 and the bottom plate 200. According to the setting of the base 101 on the steel truss 100, the stepping distance of the steel truss 100 and the bottom plate 200 each time is the spacing between two adjacent bases 101, that is, one base 101 is stepped each time for sequential welding.

[0071] The feeding device 2 is slidably arranged on the frame 1, and is used for synchronously stepping and conveying the steel truss 100 and the base plate 200; the fixed welding assembly 3 is fixedly arranged on the frame 1, and welds the steel truss 100 and the base plate 200 at the first position; the movable welding assembly 4 is arranged on the feeding device 2, and welds the steel truss 100 and the base plate 200 during the stepping conveying process; the fixed welding assembly 3 and the movable welding assembly 4 are both electrically connected to the transformer 5.

[0072] The follow-up welding device provided by the present invention is characterized in that a fixed welding assembly 3 is fixedly arranged on a frame 1, and a mobile welding assembly 4 is arranged on a feeding device 2. The fixed welding assembly 3 can weld the steel truss 100 and the bottom plate 200 that have stepped to the first position, and the mobile welding assembly 4 can weld the steel truss 100 and the bottom plate 200 during the stepping process of the steel truss 100 and the bottom plate 200. The fixed welding assembly 3 and the mobile welding assembly 4 realize alternating welding. For steel floor decks of the same specification, the alternating welding method reduces the impact of the transformer 5 on the power grid during welding, greatly improving the work efficiency. A transformer 5 is electrically connected to the fixed welding assembly 3 and the mobile welding assembly 4 at the same time, which saves the number of transformers 5 used and reduces the production cost.

[0073] In some embodiments, the feeding device 2 includes a slide plate 21, a stepping drive assembly 22 and a clamping mechanism 23. The slide plate 21 is slidably mounted on the frame 1, and the mobile welding assembly 4 is disposed on the slide plate 21. The stepping drive assembly 22 is disposed on the frame 1, and the stepping drive assembly 22 is configured to drive the slide plate 21 to reciprocate between the first position and the second position. The clamping mechanism 23 is disposed on the slide plate 21, and the clamping mechanism 23 is used to clamp and fix the steel bar truss 100 and the bottom plate 200. When the feeding device 2 moves from the first position to the second position, the clamping mechanism 23 releases the steel bar truss 100 and the bottom plate 200, and is only used to move the mobile welding assembly 4 to the second position. When the feeding device 2 moves from the second position to the first position, the clamping mechanism 23 clamps the steel bar truss 100 and the bottom plate 200 to drive the steel bar truss 100 and the bottom plate 200 to step, and at the same time, the mobile welding assembly 4 moves synchronously and welds the steel bar truss 100 and the bottom plate 200.

[0074] like Figure 3 As shown, there are two clamping mechanisms 23, and the two clamping mechanisms 23 are symmetrically arranged on the slide plate 21 to clamp the two sides of the steel truss 100 and the bottom plate 200, so as to evenly clamp the steel truss 100 and the bottom plate 200. During the welding process, when the upper electrode mechanism 41 of the fixed welding mechanism abuts and presses against the steel truss 100, the clamping mechanism 23 releases the steel truss 100 and the bottom plate 200, and the feeding device 2 starts to move from the first position to the second position; when the feeding device 2 moves from the second position to the first position, the clamping mechanism 23 first clamps the steel truss 100 and the bottom plate 200, and then the upper electrode mechanism 41 of the fixed welding assembly 3 leaves the steel truss 100 and the bottom plate 200, and then the feeding device 2 starts stepping motion, and the moving welding assembly 4 starts welding at the same time. The above process can ensure that the steel truss 100 and the bottom plate 200 are always in a state of being pressed and positioned, which is conducive to welding positioning.

[0075] Specifically, Figure 3The stepper drive assembly 22 includes a stepper drive member 221, which is mounted on the frame 1, and the slide plate 21 is slidably connected to the frame 1. The stepper drive member 221 drives the slide plate 21 to slide along a straight line relative to the frame 1. In this embodiment, the stepper drive member 221 adopts a motor, which is mounted on a motor bracket 222, and the motor bracket 222 is mounted at the front end of the frame 1. The output end of the motor can be connected to the first end of the ball screw 224 through a coupling 223. Screw support seats 225 are provided on both sides of the motor bracket 222, and the ball screw 224 is rotatably inserted into the screw support seat 225. The second end of the ball screw 224 is threadedly connected to the stepper screw mother seat 226, and the stepper screw mother seat 226 is fixedly connected to the middle position of the lower surface of the slide plate 21. When the motor drives the ball screw 224 to rotate, the stepping screw base 226 moves linearly relative to the ball screw 224, thereby driving the slide plate 21 to move in a straight line. At this time, the clamping mechanism 23 installed on the slide plate 21 and the steel truss 100 and the base plate 200 clamped by the clamping mechanism 23 are also driven to move, and the mobile welding assembly 4 arranged on the slide plate 21 is also driven to move, so that the mobile welding assembly 4 can perform welding during the movement.

[0076] Preferably, if Figure 3 The stepping drive assembly 22 further includes a support roller 24, which is rotatably mounted on the slide plate 21. When the steel bar truss 100 and the bottom plate 200 are arranged on the frame 1, the bottom plate 200 can be supported on the slide plate 21 and the support roller 24 at the same time. During the movement of the slide plate 21, the support roller 24 is used to assist in rolling and supporting the slide plate 21 and reduce the friction between the bottom plate 200 and the slide plate 21. It can be understood that the rotation axis of the support roller 24 is along the width direction of the bottom plate 200, that is, the Y direction.

[0077] In this embodiment, the motor may be a servo motor, which has the advantages of controllability and high precision compared to ordinary motors, and has a fast response speed and can achieve frequent forward and reverse rotation to adjust the position of the slide 21. The axis of the output shaft of the motor coincides with the axis of the ball screw 224.

[0078] It is understandable that the stepping driving member 221 of the present embodiment may also be a cylinder, and the output end of the cylinder is drivingly connected to the slide plate 21 to drive the slide plate 21 to move linearly.

[0079] In some embodiments, along the stepping conveying direction, the distance between the first position and the second position is equal to the distance between two adjacent bases 101 on the steel truss 100, and the distance between the mobile welding assembly 4 and the clamping mechanism 23 is equal to the distance between two adjacent bases 101 on the steel truss 100.

[0080] With such arrangement, the footings 101 and the bottom plate 200 on the steel truss 100 can be welded in sequence to avoid omission. Since the mobile welding assembly 4 and the clamping mechanism 23 are simultaneously arranged on the slide plate 21, in order to avoid position interference, the mobile welding assembly 4 and the clamping mechanism 23 are arranged front and back, and the spacing distance is the spacing between two adjacent footings 101. When the clamping mechanism 23 clamps the last footing 101 position of the steel truss 100, the mobile welding assembly 4 welds the penultimate footing 101 and the bottom plate 200 on the steel truss 100. It can be understood that the last step of the steel truss 100 and the bottom plate 200 needs to be stepped and conveyed by other mechanisms or manually.

[0081] In some embodiments, the clamping mechanism 23 includes a clamping fixed seat 231, a first lifting drive member 232, an upper clamping plate 233 and a lower clamping plate 234. The clamping fixed seat 231 is arranged on the slide plate 21, and a guide shaft 235 is provided on the clamping fixed seat 231; the first lifting drive member 232 is arranged at the top of the guide shaft 235, and the output end of the first lifting drive member 232 is arranged vertically downward; the upper clamping plate 233 is arranged at the output end of the first lifting drive member 232, and a clamping block 236 is provided on the lower surface of the upper clamping plate 233; the lower clamping plate 234 is arranged on the slide plate 21, and the lower clamping plate 234 is arranged opposite to the clamping block 236. The first lifting drive member 232 drives the clamping block 236 to descend and presses the steel truss 100 and the base plate 200 onto the lower clamping plate 234.

[0082] like Figure 5 In this embodiment, the first lifting drive member 232 adopts a cylinder as an example, and the cylinder adopts a pressure plate cylinder, which is installed on the clamping fixed seat 231 through four guide shafts 235 and two cylinder connecting plates 237. The clamping fixed seats 231 of the two clamping mechanisms 23 are symmetrically arranged on the slide plate 21 and located on both sides of the bottom plate 200. The pressure plate cylinder can drive the upper pressure plate 233 to move up and down to press and lift, and the four guide shafts 235 pass through the upper pressure plate 233 to provide a guiding effect.

[0083] In some embodiments, the fixed welding assembly 3 includes four groups of upper electrode mechanisms 41 and two groups of lower electrode mechanisms 42, the mobile welding assembly 4 includes two groups of upper electrode mechanisms 41 and one group of lower electrode mechanisms 42, the transformer 5 includes a first transformer 51 and a second transformer 52, the two groups of upper electrode mechanisms 41 in the fixed welding assembly 3 and the two groups of upper electrode mechanisms 41 in the mobile welding assembly 4 are electrically connected to the first transformer 51, and the other two groups of upper electrode mechanisms 41 of the fixed welding assembly 3 are electrically connected to the second transformer 52.

[0084] like Figure 2 and Figure 8As shown, among the six groups of upper electrode mechanisms 41, every two groups of upper electrode mechanisms 41 are used to weld the two side feet 101 and the bottom plate 200 on a steel truss 100, and the six groups of upper electrode mechanisms 41 are respectively used to weld the three parallel groups of feet 101 on the three steel trusses 100, wherein the middle two groups of upper electrode mechanisms 41 and the corresponding lower electrode mechanisms 42 constitute a mobile welding assembly 4 arranged on the feeding device 2, and every two groups of upper electrode mechanisms 41 and one group of lower electrode mechanisms 42 are aligned up and down, so the upper electrode mechanism 41 is fixed by the welding bracket 6, and the lower electrode mechanism 42 is arranged on the slide plate 21 or at the first position on the frame 1 facing the two steel trusses 100 on both sides. The two groups of upper electrode mechanisms 41 in the above-mentioned fixed welding assembly 3 and the upper electrode mechanism 41 of the mobile welding assembly 4 are connected to the first transformer 51 at the same time. After welding starts, the fixed welding assembly 3 welds the steel truss 100 and the base plate 200 at the first position, and the mobile welding assembly 4 welds the steel truss 100 and the base plate 200 during the movement from the second position to the first position, thereby realizing alternating welding. The other two groups of upper electrode mechanisms 41 of the fixed welding assembly 3 are connected to the second transformer 52. When the fixed welding assembly 3 is welding, the two transformers 5 work at the same time, thereby realizing that three steel trusses 100 pass through two transformers 5, saving the use cost of the transformer 5 and reducing the impact on the power grid.

[0085] In some embodiments, the follow-up welding device further includes a welding bracket 6, which is used to install an upper electrode mechanism 41 of a fixed welding assembly 3 and a movable welding assembly 4. Figure 4 As shown, taking the installation of the mobile welding assembly 4 on the welding bracket 6 as an example, the welding bracket 6 includes a supporting column 61, a supporting beam 62 and a dovetail frame 64, the bottom end of the supporting column 61 is fixed on the slide 21 (the supporting column 61 for installing the fixed welding assembly 3 is fixed on the frame 1, and for the fixed welding assembly 3, the welding bracket 6 can adopt an integrated structure with the frame 1), and the two ends of the supporting beam 62 are respectively connected to the top ends of the two supporting columns 61; the dovetail frame 64 is installed in a sliding cooperation with the supporting beam 62 and can be locked at any position on the supporting beam 62, the sliding direction of the dovetail frame 64 is perpendicular to the stepping conveying direction, and the upper electrode mechanism 41 is fixedly connected to the dovetail frame 64.

[0086] like Figure 4As shown, for the mobile welding assembly 4, the upper fixed seat 411 of the upper electrode mechanism 41 is installed on the welding bracket 6, wherein the bottom end of the support column 61 is fixed on the slide 21, the two ends of the support beam 62 are respectively connected to the top ends of the two support columns 61, the support beam 62 is a steel section, the dovetail frame 64 is installed with the support beam 62 in a sliding manner and can be locked at any position on the support beam 62, and the upper fixed seat 411 is fixedly connected with the dovetail frame 64, so as to realize the position adjustment of the upper electrode mechanism 41 along the support beam 62 (Y direction), so as to facilitate the initial position of the mobile welding assembly 4 to be adjusted according to the position of the foot 101 of the steel bar truss 100. Angle supports 63 are provided between the two ends of the support beam 62 and the support column 61, and the angle supports 63 improve the stability of the support beam 62 and the upper electrode mechanism 41. By setting the welding bracket 6, the position of the upper electrode mechanism 41 in the Y direction can be adjusted, so as to be suitable for welding of steel bar trusses 100 of different specifications at the positions of the foot 101 of different sizes. The above position adjustment refers to the initial position adjustment of the upper fixing seat 411 along the Y direction. After the adjustment and positioning, no further adjustment is required during the welding process.

[0087] In some embodiments, the upper electrode mechanism 41 includes an upper fixed seat 411, a second lifting drive member 412 and a guide column 413. The upper fixed seat 411 is arranged on the welding bracket 6; the second lifting drive member 412 is arranged on the upper fixed seat 411, and the output end of the second lifting drive member 412 slides vertically downward and is arranged on the upper fixed seat 411; the top end of the guide column 413 is connected to the output end of the second lifting drive member 412, and the bottom end of the guide column 413 is provided with a connecting seat 414, an upper electrode seat 415 is arranged on the connecting seat 414, and an electrode strip 416 is arranged on the upper electrode seat 415, and the connecting seat 414 is used to be electrically connected to the first transformer 51 or the second transformer 52.

[0088] Take the second lifting drive member 412 as an example, which is a cylinder. Figure 6 The cylinder is fixed on the cylinder seat 417, the cylinder seat 417 is fixed on the top of the upper fixed seat 411, the dovetail frame 64 is fixed on one side of the upper fixed seat 411, the side of the upper fixed seat 411 is provided with a dovetail groove to cooperate with the dovetail frame 64 for installation, the top of the guide column 413 is passed through the upper fixed seat 411 and connected to the output end of the cylinder, the bottom end of the guide column 413 is connected to the connecting seat 414, the output end of the cylinder drives the guide column 413 to rise and fall, the guide column 413 drives the connecting seat 414 to move, and then drives the upper electrode seat 415 and the electrode strip 416 to rise and fall.

[0089] In some embodiments, the lower electrode mechanism 42 includes a lower electrode seat 421, an electrode block 422 and an insulating plate 423. The lower electrode seat 421 is provided with a groove, and the lower electrode seat 421 is fixed on the slide 21 or the frame 1; electrode blocks 422 are provided on the top of the groove walls on both sides of the groove, and the two electrode blocks 422 are respectively provided corresponding to the two electrode strips 416; the insulating plate 423 is provided at the bottom end of the lower electrode seat 421 to isolate the frame 1 or the slide 21.

[0090] like Figure 7 As shown, the lower electrode seat 421 adopts a groove structure to isolate the two electrode blocks 422. The tops of the two groove walls of the lower motor seat are provided with mounting grooves, and the electrode blocks 422 are fixedly arranged in the mounting grooves. The two electrode blocks 422 are arranged opposite to the two bottom feet 101 of the steel truss 100, and are opposite to the positions of the two groups of upper electrode mechanisms 41. An insulating plate 423 is arranged at the bottom end of the lower electrode seat 421 to achieve the insulated installation of the lower electrode seat 421 and the frame 1 or the feeding device 2. In accordance with the upper electrode mechanism 41, three groups of lower electrode mechanisms 42 are arranged, and each group of lower electrode mechanisms 42 is correspondingly arranged below the two groups of upper electrode mechanisms 41. Two groups of lower electrode mechanisms 42 are installed on the frame 1, and one group of lower electrode mechanisms 42 is correspondingly installed on the slide plate 21.

[0091] When welding of the steel truss 100 and the base plate 200 is required, the electrode strip 416 of the upper electrode mechanism 41 moves downward to press the steel truss 100 and the base plate 200, so that the base plate 200 contacts the lower electrode block 422, forming a bridge loop type closed loop, and a strong current with low voltage flows through the contact surface and adjacent areas of the steel truss 100 and the base plate 200. The resistance heat generated heats the contact part (that is, the welding point position) to a molten or plastic state for welding.

[0092] In some embodiments, a first sliding assembly 7 is provided below the position of the slide plate 21 corresponding to the welding bracket 6 , and a second sliding assembly 8 is provided below the position of the slide plate 21 corresponding to the lower electrode mechanism 42 .

[0093] like Figure 3 As shown, a first sliding assembly 7 is provided on both sides along the Y direction below the slide 21, and a second sliding assembly 8 is provided in the middle, wherein the first sliding assembly 7 includes a first slider 71 and a first slide rail 72, one of which is provided at the bottom end of the slide 21, and the other is provided on the frame 1. In this embodiment, the first slide rail 72 is provided on the frame 1, and the first slide rail 72 is parallel to the axis of the ball screw 224, and the first slider 71 is slidably provided on the first slide rail 72. In this embodiment, the provision of the first slider 71 and the first slide rail 72 not only limits the rotational motion of the first slide 21 around the rotation axis of the ball screw 224, ensuring that the first slide 21 only moves in the axis direction of the rotation axis of the ball screw 224, but also effectively reduces the friction during the motion process, thereby reducing energy loss.

[0094] The second sliding assembly 8 includes a second slide rail 82 and a second slider 81, one of which is arranged on the frame 1 and the other is arranged on the slide 21. The second slide rail 82 is parallel to the first slide rail 72. In this embodiment, the second slide rail 82 is arranged on the frame 1, and the second slider 81 is slidably mounted on the second slide rail 82. The second slider 81 is fixedly arranged on the bottom surface of the slide 21. Since the mobile welding assembly 4 is installed on the slide 21, the upper electrode mechanism 41 will generate impact force when welding is pressed down. The addition of the second slide rail 82 can reduce the impact of the upper electrode mechanism 41 on the slide 21, so that the slide 21 maintains a stable balance.

[0095] Using the above provided follow-up welding device, the present invention also provides a follow-up welding method, comprising the following steps:

[0096] S1, the steel truss 100 and the bottom plate 200 are both arranged on the frame 1, and the first foot 101 of the steel truss 100 is located at a first position;

[0097] At the beginning, the slide plate 21 is located near the frame 1. At the same time, the fixed welding assembly 3 installed on the frame 1 and the upper electrode mechanism 41 of the mobile welding assembly 4 installed on the feeding device 2 are both located in the same straight line, that is, aligned with the foot 101 at the first position, ready to move down for welding.

[0098] S2, moving the welding assembly 4 to weld the steel bar truss 100 and the bottom plate 200 at the first position; at this time, the clamping mechanism 23 clamps the steel bar truss 100 and the bottom plate 200.

[0099] S3, the fixed welding assembly 3 welds the steel truss 100 and the bottom plate 200 at the first position; the feeding device 2 drives the mobile welding assembly 4 to move toward the second position, along the stepping conveying direction of the steel truss 100 and the bottom plate 200, the second position is located upstream of the first position;

[0100] At this time, the clamping mechanism 23 on the feeding device 2 releases the steel truss 100 and the bottom plate 200, and the upper electrode mechanism 41 of the fixed welding assembly 3 presses down the steel truss 100 to achieve fixation and welding. In this step, the welding process of the fixed welding assembly 3 and the moving process of the mobile welding assembly 4 are carried out simultaneously, and while the fixed welding assembly 3 completes welding, the mobile welding assembly 4 can reach the second position.

[0101] S4, when the mobile welding assembly 4 reaches the second position, the fixed welding assembly 3 has just completed welding; the feeding device 2 clamps the steel truss 100 and the bottom plate 200 again and moves stepwise toward the first position, while the mobile welding assembly 4 welds the steel truss 100 and the bottom plate 200;

[0102] In this step, after the mobile welding assembly 4 reaches the second position, the clamping mechanism 23 clamps the steel bar truss 100 and the bottom plate 200, and then the fixed welding assembly 3 releases the steel bar truss 100, and the mobile welding assembly 4 performs welding while not moving with the feeding device 2. In this way, the fixed welding assembly 3 welds the two steel bar trusses 100 on both sides and the mobile welding assembly 4 welds the one steel bar truss 100 in the middle, which is alternately welded.

[0103] S5, when the mobile welding assembly 4 reaches the first position again, the mobile welding assembly 4 has just completed welding; return to step S3 until the welding of the steel bar truss 100 and the bottom plate 200 is completed.

[0104] The mobile welding assembly 4 is driven reciprocatingly by the feeding device 2 until the welding of the penultimate welding spot is completed. At this time, after the mobile welding assembly 4 reaches the second position again, the clamping mechanism 23 cannot clamp the steel truss 100 and the base plate 200. At this time, manual or other mechanisms are required to step-by-step transport the steel truss 100 and the base plate 200 so that the last foot 101 on the steel truss 100 reaches the first position for welding.

[0105] During the above welding process, the two transformers 5 are alternately controlled, wherein the second transformer 52 controls the two groups of upper electrode mechanisms 41 to discharge successively, and one of the two groups of upper electrode mechanisms 41 follows the welding when being fed in. Compared with the prior art using three transformers 5, this embodiment uses two transformers 5, which greatly reduces the impact of the transformer 5 on the external power grid, improves production efficiency and reduces production costs.

[0106] The follow-up welding device provided in the above embodiment using the steel floor decking with six welding points as an example is also applicable to steel floor decking with twelve welding points or other numbers of welding points. According to the number of steel trusses 100 on the base plate 200 and the number of fixed welding assemblies 3, mobile welding assemblies 4 and transformers 5 and the arrangement of transformers 5 are set according to the principle of alternating welding, the goals of reducing the number of transformers 5 and improving production efficiency can be achieved, which are not listed in this article.

[0107] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Follow-up welding device, characterized in that: include: A frame (1), a steel bar truss (100) to be welded and a bottom plate (200) are all arranged on the frame (1); A feeding device (2), the feeding device (2) being slidably disposed on the frame (1), and the feeding device (2) being used for synchronously stepping and conveying the steel bar truss (100) and the bottom plate (200); A fixed welding assembly (3), the fixed welding assembly (3) being fixedly mounted on the frame (1) and welding the steel bar truss (100) and the bottom plate (200) at the first position; A mobile welding assembly (4), wherein the mobile welding assembly (4) is arranged on the feeding device (2) and performs welding on the steel bar truss (100) and the bottom plate (200) during the stepping conveying process; A transformer (5), the fixed welding assembly (3) and the movable welding assembly (4) are both electrically connected to the transformer (5).

2. The follow-up welding device according to claim 1, characterized in that: The feeding device (2) comprises: A slide plate (21), the slide plate (21) being slidably mounted on the frame (1), and the movable welding assembly (4) being arranged on the slide plate (21); A stepping drive assembly (22), the stepping drive assembly (22) being arranged on the frame (1), the stepping drive assembly (22) being configured to drive the slide plate (21) to reciprocate between the first position and the second position; A clamping mechanism (23), wherein the clamping mechanism (23) is arranged on the slide plate (21), and the clamping mechanism (23) is used to clamp and fix the steel bar truss (100) and the bottom plate (200).

3. The follow-up welding device according to claim 2, characterized in that: Two clamping mechanisms (23) are provided, and the two clamping mechanisms (23) are symmetrically arranged on the slide plate (21) to clamp the two sides of the steel bar truss (100) and the bottom plate (200).

4. The follow-up welding device according to claim 2, characterized in that: The clamping mechanism (23) comprises: A clamping and fixing seat (231), wherein the clamping and fixing seat (231) is arranged on the slide plate (21), and a guide shaft (235) is arranged on the clamping and fixing seat (231); A first lifting drive member (232), wherein the first lifting drive member (232) is disposed at the top end of the guide shaft (235), and an output end of the first lifting drive member (232) is disposed vertically downward; An upper pressing plate (233), the upper pressing plate (233) being arranged at the output end of the first lifting drive member (232), and a pressing block (236) being arranged on the lower surface of the upper pressing plate (233); A lower clamping plate (234), wherein the lower clamping plate (234) is disposed on the slide plate (21), and the lower clamping plate (234) is disposed opposite to the clamping block (236), and the first lifting drive member (232) drives the clamping block (236) to descend and clamp the steel bar truss (100) and the bottom plate (200) onto the lower clamping plate (234).

5. The follow-up welding device according to claim 2, characterized in that: Along the stepping conveying direction of the steel truss (100) and the base plate (200), the spacing between the first position and the second position is equal to the spacing between two adjacent base feet (101) on the steel truss (100), and the spacing between the movable welding assembly (4) and the clamping mechanism (23) is equal to the spacing between two adjacent base feet (101) on the steel truss (100).

6. The follow-up welding device according to claim 5, characterized in that: The fixed welding assembly (3) comprises four groups of upper electrode mechanisms (41) and two groups of lower electrode mechanisms (42); the movable welding assembly (4) comprises two groups of upper electrode mechanisms (41) and one group of lower electrode mechanisms (42); the transformer (5) comprises a first transformer (51) and a second transformer (52); the two groups of upper electrode mechanisms (41) in the fixed welding assembly (3) and the two groups of upper electrode mechanisms (41) in the movable welding assembly (4) are both electrically connected to the first transformer (51); and the other two groups of upper electrode mechanisms (41) in the fixed welding assembly (3) are electrically connected to the second transformer (52).

7. The follow-up welding device according to claim 6, characterized in that: It also includes a welding bracket (6) for mounting the electrode mechanism (41) of the fixed welding assembly (3) and the movable welding assembly (4), wherein the welding bracket (6) includes: A supporting column (61), the bottom end of which is fixed on the frame (1) or on the slide plate (21). A supporting crossbeam (62), wherein two ends of the supporting crossbeam (62) are respectively connected to the top ends of the two supporting columns (61); A dovetail frame (64), wherein the dovetail frame (64) is installed in a sliding manner with the supporting crossbeam (62) and can be locked at any position on the supporting crossbeam (62), the sliding direction of the dovetail frame (64) is perpendicular to the stepping conveying direction, and the upper electrode mechanism (41) is fixedly connected to the dovetail frame (64).

8. The follow-up welding device according to claim 7, characterized in that: The upper electrode mechanism (41) comprises: An upper fixing seat (411), wherein the upper fixing seat (411) is arranged on the welding bracket (6); A second lifting drive member (412), wherein the second lifting drive member (412) is disposed on the upper fixed seat (411), and an output end of the second lifting drive member (412) vertically slides downward and penetrates the upper fixed seat (411); A guide column (413), the top end of the guide column (413) is connected to the output end of the second lifting drive member (412), the bottom end of the guide column (413) is provided with a connecting seat (414), an upper electrode seat (415) is provided on the connecting seat (414), an electrode strip (416) is provided on the upper electrode seat (415), and the connecting seat (414) is electrically connected to the first transformer (51) or the second transformer (52).

9. The follow-up welding device according to claim 8, characterized in that: The lower electrode mechanism (42) comprises: A lower electrode seat (421), wherein the lower electrode seat (421) is provided with a groove, and the lower electrode seat (421) is fixed on the slide plate (21) or the frame (1); Electrode blocks (422), the electrode blocks (422) being arranged at the top ends of groove walls on both sides of the groove, and the two electrode blocks (422) being arranged corresponding to the two electrode strips (416) respectively; An insulating plate (423), wherein the insulating plate (423) is disposed at the bottom end of the lower electrode seat (421) to isolate the frame (1) or the slide plate (21).

10. The follow-up welding device according to claim 9, characterized in that: A first sliding component (7) is provided at a position on the slide plate (21) corresponding to the welding bracket (6), and a second sliding component (8) is provided at a position on the slide plate (21) corresponding to the lower electrode mechanism (42).

11. A follow-up welding method, characterized in that: According to the follow-up welding device according to any one of claims 1 to 10, the follow-up welding method comprises the following steps: S1, the steel truss (100) and the bottom plate (200) are both arranged on the frame (1), and the first foot (101) of the steel truss (100) is located at a first position; S2, moving the welding assembly (4) to weld the steel bar truss (100) and the bottom plate (200) at the first position; S3, the fixed welding assembly (3) welds the steel bar truss (100) and the bottom plate (200) at the first position; the feeding device (2) drives the movable welding assembly (4) to move toward a second position, and along the stepping conveying direction of the steel bar truss (100) and the bottom plate (200), the second position is located upstream of the first position; S4, when the movable welding assembly (4) reaches the second position, the fixed welding assembly (3) has just completed welding; the feeding device (2) clamps the steel bar truss (100) and the bottom plate (200) again and moves stepwise toward the first position, while the movable welding assembly (4) welds the steel bar truss (100) and the bottom plate (200); S5, when the movable welding assembly (4) reaches the first position again, the movable welding assembly (4) has just completed welding; Return to step S3 until the welding of the steel bar truss (100) and the bottom plate (200) is completed.

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