Follow-up welding device

Abstract

The utility model belongs to the technical field of reinforcing steel bar floor support plate machining, and discloses a follow-up welding device which comprises a rack, a feeding device, a fixed welding assembly, a movable welding assembly and a transformer, and a reinforcing steel bar truss to be welded 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 working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of steel bar floor decking processing technology, and in particular to a follow-up welding device. Background Technology

[0002] Reinforced concrete floor decking, also known as steel truss floor decking, typically consists of steel trusses and galvanized sheets, which are welded together at multiple weld points to form the reinforced concrete floor decking.

[0003] When welding steel trusses to galvanized sheets, multiple steel trusses need to be welded to a single galvanized sheet. To improve efficiency, multiple trusses are typically welded simultaneously. Traditional bridge-loop welding equipment requires a transformer for every two welding points; welding three steel trusses to a galvanized sheet necessitates three transformers. This results in high welding costs, significant impact on the power grid during welding, and low work efficiency due to manual step-by-step movement after each group of welds is completed. Utility Model Content

[0004] The purpose of this invention is to provide a follow-up welding device to solve the problems of high impact on the power grid and low work efficiency during the welding process of reinforced concrete floor slabs, while saving costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

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

[0007] The frame, the steel truss to be welded, and the base plate are all mounted on the frame;

[0008] A feeding device is slidably mounted on the frame and is used to synchronously and stepwise transport the steel truss and the base plate.

[0009] A fixed welding assembly is fixedly mounted on the frame and is used to weld the steel truss and the base plate at the first position.

[0010] A mobile welding assembly is mounted on a feeding device and performs welding on the steel truss and the base plate during the stepping conveying process.

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

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

[0013] A sliding plate, which is slidably mounted on the frame, and the movable welding assembly is disposed on the sliding plate;

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

[0015] A clamping mechanism is provided on the slide plate and is used to clamp and fix the steel truss and the base 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 truss and the two sides of the base plate.

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

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

[0019] A first lifting drive component is located at the top of the guide shaft, and the output end of the first lifting drive component is vertically downward.

[0020] An upper pressing plate is provided at the output end of the first lifting drive component, and a pressing block is provided on the lower surface of the upper pressing plate;

[0021] A lower pressing plate is disposed on the sliding plate and is positioned directly opposite the pressing block. The first lifting drive unit drives the pressing block to descend and presses the steel truss and the bottom plate onto the lower pressing 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 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 feet on the steel truss.

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

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

[0025] The support column is fixed at its bottom end to the frame or to the slide plate.

[0026] The supporting beam connects to the tops of two supporting columns at both ends.

[0027] The dovetail frame is slidably fitted to 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 includes:

[0029] Upper fixing seat, the upper fixing seat is disposed on the welding bracket;

[0030] The second lifting drive is disposed on the upper fixed base, and the output end of the second lifting drive is vertically slid downward through the upper fixed base.

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

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

[0033] The lower electrode holder has a groove and is fixed on the slide plate or the frame.

[0034] Electrode blocks are provided at the top of both sides of the groove wall, and two electrode blocks are respectively provided for two electrode strips;

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

[0036] The beneficial effects of this utility model are:

[0037] The follow-up welding device provided by this utility model has a fixed welding component fixedly installed on the frame and a movable welding component installed on the feeding device. The fixed welding component can weld the steel truss and the base plate when they step to the first position, while the movable welding component can weld the steel truss and the base plate during their stepping process. The fixed welding component and the movable welding component realize alternating welding. For steel floor decking of the same specifications, 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. Attached Figure Description

[0038] Figure 1 This is a first-view structural schematic diagram of the follow-up welding device provided in this embodiment of the utility model;

[0039] Figure 2 This is a second-view structural schematic diagram of the follow-up welding device provided in this embodiment of the utility model;

[0040] Figure 3 This is a schematic diagram of the stepping mechanism in the follower welding device provided in this embodiment of the utility model;

[0041] Figure 4 This is a schematic diagram of the installation structure of the moving welding component on the stepping mechanism in the follow-up welding device provided in this embodiment of the utility model;

[0042] Figure 5 This is a schematic diagram of the clamping mechanism in the follow-up welding device provided in this embodiment of the utility model;

[0043] Figure 6 This is a schematic diagram of the upper electrode mechanism in the follow-up welding device provided in this embodiment of the utility model;

[0044] Figure 7 This is a schematic diagram of the lower electrode mechanism in the follow-up welding device provided in this embodiment of the utility model;

[0045] Figure 8 yes Figure 1 View A in the middle;

[0046] Figure 9 This is a structural schematic diagram of the reinforced concrete floor decking involved in an embodiment of this utility model.

[0047] In the picture:

[0048] 100. Steel truss; 101. Footing; 200. Base plate;

[0049] 1. Rack;

[0050] 2. Feeding device; 21. Slide plate; 22. Stepper drive assembly; 221. Stepper drive component; 222. Motor bracket; 223. Coupling; 224. Ball screw; 225. Screw support seat; 226. Stepper screw female seat; 23. Clamping mechanism; 231. Clamping fixing seat; 232. First lifting drive component; 233. Upper clamping plate; 234. Lower clamping plate; 235. Guide shaft; 236. Clamping block; 237. Cylinder connecting plate; 24. Support roller;

[0051] 3. Fix the welding components;

[0052] 4. Moving welding assembly; 41. Upper electrode mechanism; 411. Upper fixed seat; 412. Second lifting drive component; 413. Guide post; 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;

[0053] 5. Transformer; 51. First transformer; 52. Second transformer;

[0054] 6. Welded bracket; 61. Support column; 62. Support beam; 63. Corner brace; 64. Dovetail frame;

[0055] 7. First sliding component; 71. First slider; 72. First slide rail;

[0056] 8. Second sliding component; 81. Second slider; 82. Second slide rail. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0058] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0061] This utility model embodiment provides a follow-up welding device, such as... Figure 9 This is used to weld multiple steel trusses 100 onto a base plate 200 to form a reinforced floor deck. The base plate 200 is generally made of galvanized sheet. Multiple feet 101 of the steel trusses 100 are in close contact with the surface of the base plate 200. The contact parts between the feet 101 and the base plate 200 are welded and fixed. In this embodiment, three steel trusses 100 are welded side by side in the width direction (Y direction) of the reinforced floor deck. Each steel truss 100 has multiple feet 101 along the length direction (X direction) of the base plate 200, which need to be welded sequentially. In the prior art, the simultaneous welding of the feet 101 of three steel trusses 100 at the same cross-section requires three transformers 5 to work at the same time, which has a large impact on the power grid. The irregular structure of the base plate 200 and the steel trusses 100 makes it difficult to position and automatically move, requiring manual assistance, resulting in low work efficiency and high labor intensity.

[0062] To solve the above technical problems, such as Figures 1-8 This utility model provides a follow-up welding device, including a frame 1, a feeding device 2, a fixed welding assembly 3, a movable welding assembly 4, and a transformer 5. The steel truss 100 and the base plate 200 to be welded are both mounted on the frame 1 and initially positioned so that the first foot 101 of the steel truss 100 is in a first position, facilitating sequential welding steps. Figure 1 The positive direction of the X-axis is the stepping conveying direction of the steel truss 100 and the base 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 base plate 200 each time is the distance between two adjacent bases 101, that is, each stepping is one base 101, and welding is carried out sequentially.

[0063] The feeding device 2 is slidably mounted on the frame 1 and is used to synchronously step-feed the steel truss 100 and the base plate 200. The fixed welding assembly 3 is fixedly mounted 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 mounted on the feeding device 2 and welds the steel truss 100 and the base plate 200 during the step-feeding process. Both the fixed welding assembly 3 and the movable welding assembly 4 are electrically connected to the transformer 5.

[0064] The follow-up welding device provided by this utility model has a fixed welding assembly 3 fixedly installed on the frame 1 and a movable welding assembly 4 installed on the feeding device 2. The fixed welding assembly 3 can weld the steel truss 100 and the base plate 200 when they step to the first position, and the movable welding assembly 4 can weld the steel truss 100 and the base plate 200 during their stepping process. The fixed welding assembly 3 and the movable welding assembly 4 realize alternating welding. For steel floor slabs of the same specifications, the alternating welding method reduces the impact of the transformer 5 on the power grid during the welding process, and greatly improves work efficiency. One transformer 5 is electrically connected to both the fixed welding assembly 3 and the movable welding assembly 4, saving the number of transformers used and reducing production costs.

[0065] In some embodiments, the feeding device 2 includes a slide plate 21, a stepper drive assembly 22, and a clamping mechanism 23. The slide plate 21 is slidably mounted on the frame 1, and the movable welding assembly 4 is disposed on the slide plate 21. The stepper drive assembly 22 is disposed on the frame 1 and is configured to drive the slide plate 21 to reciprocate between a first position and a second position. The clamping mechanism 23 is disposed on the slide plate 21 and is used to clamp and fix the steel truss 100 and the base plate 200. When the feeding device 2 moves from the first position to the second position, the clamping mechanism 23 releases the steel truss 100 and the base plate 200 and is only used to move the movable 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 truss 100 and the base plate 200 to drive the steel truss 100 and the base plate 200 to step, while the movable welding assembly 4 moves synchronously and welds the steel truss 100 and the base plate 200.

[0066] like Figure 3 As shown, two clamping mechanisms 23 are provided, symmetrically arranged on the slide plate 21 to clamp the steel truss 100 and the base plate 200 on both sides, so as to evenly clamp the steel truss 100 and the base 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 base 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 base plate 200, then the upper electrode mechanism 41 of the fixed welding assembly 3 leaves the steel truss 100 and the base plate 200, and then the feeding device 2 starts to step, while the welding assembly 4 moves to start welding. The above process can ensure that the steel truss 100 and the base plate 200 are always in a pressed and positioned state, which is beneficial for welding positioning.

[0067] Specifically, such as Figure 3The stepper drive assembly 22 includes a stepper drive component 221, which is mounted on the frame 1. A slide plate 21 is slidably connected to the frame 1. The stepper drive component 221 drives the slide plate 21 to slide linearly relative to the frame 1. In this embodiment, the stepper drive component 221 is a motor, mounted on a motor bracket 222. The motor bracket 222 is mounted at the front end of the frame 1. The output end of the motor is connected to the first end of a ball screw 224 via a coupling 223. Screw support seats 225 are provided on both sides of the motor bracket 222. The ball screw 224 is rotatably inserted through the screw support seats 225. The second end of the ball screw 224 is threadedly connected to a stepper screw female seat 226, which 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 stepper screw mother seat 226 moves linearly relative to the ball screw 224, which in turn drives the slide plate 21 to move linearly. At this time, the clamping mechanism 23 installed on the slide plate 21, as well as the steel truss 100 and the base plate 200 clamped by the clamping mechanism 23, will also be driven to move. The movable welding assembly 4 installed on the slide plate 21 will also be driven to move, so that the movable welding assembly 4 can perform welding during the movement.

[0068] Preferably, such as Figure 3 The stepper drive assembly 22 also includes a support roller 24, which is rotatably mounted on the slide plate 21. When the steel truss 100 and the base plate 200 are mounted on the frame 1, the base plate 200 can be supported on both the slide plate 21 and the support roller 24. During the movement of the slide plate 21, the support roller 24 assists in rolling support of the slide plate 21 and reduces the friction between the base plate 200 and the slide plate 21. It can be understood that the axis of rotation of the support roller 24 is along the width direction of the base plate 200, i.e., the Y direction.

[0069] In this embodiment, the motor can be a servo motor. Compared with ordinary motors, servo motors have the advantages of high controllability and precision. Moreover, servo motors have a fast response speed and can frequently reverse direction to adjust the position of the slide plate 21. The axis of the output shaft of the motor coincides with the axis of the ball screw 224.

[0070] It is understood that the stepper drive 221 in this embodiment can also be a cylinder, with the output end of the cylinder connected to the slide plate 21 to drive the slide plate 21 to move linearly.

[0071] 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 feet 101 on the steel truss 100, and the distance between the movable welding assembly 4 and the clamping mechanism 23 is equal to the distance between two adjacent feet 101 on the steel truss 100.

[0072] This setup allows for sequential welding of the base feet 101 on the steel truss 100 to the base plate 200, preventing any omissions. Since the movable welding assembly 4 and the clamping mechanism 23 are both mounted on the slide plate 21, they are positioned one behind the other to avoid positional interference. The distance between them is equal to the spacing between two adjacent base feet 101. When the clamping mechanism 23 clamps the last base foot 101 of the steel truss 100, the movable welding assembly 4 welds the second-to-last base foot 101 on the steel truss 100 to the base plate 200. It can be understood that the final step of the steel truss 100 and the base plate 200 requires step-by-step transport via other mechanisms or manual operation.

[0073] In some embodiments, the clamping mechanism 23 includes a clamping fixing seat 231, a first lifting drive member 232, an upper pressing plate 233, and a lower pressing plate 234. The clamping fixing seat 231 is disposed on the slide plate 21, and a guide shaft 235 is provided on the clamping fixing seat 231. The first lifting drive member 232 is disposed at the top end of the guide shaft 235, and the output end of the first lifting drive member 232 is vertically downward. The upper pressing plate 233 is disposed at the output end of the first lifting drive member 232, and a pressing block 236 is provided on the lower surface of the upper pressing plate 233. The lower pressing plate 234 is disposed on the slide plate 21, and the lower pressing plate 234 is positioned directly opposite the pressing block 236. The first lifting drive member 232 drives the pressing block 236 to descend and press the steel truss 100 and the base plate 200 onto the lower pressing plate 234.

[0074] like Figure 5 In this embodiment, taking the first lifting drive component 232 as an example, the cylinder is a pressure plate cylinder, which is mounted on the clamping and fixing seat 231 via four guide shafts 235 and two cylinder connecting plates 237. The clamping and fixing seats 231 of the two clamping mechanisms 23 are symmetrically arranged on the slide plate 21 and located on both sides of the base plate 200. The pressure plate cylinder can drive the upper pressure plate 233 to move up and down, pressing down and lifting up. The four guide shafts 235 pass through the upper pressure plate 233 to provide guidance.

[0075] In some embodiments, the fixed welding assembly 3 includes four sets of upper electrode mechanisms 41 and two sets of lower electrode mechanisms 42, the movable welding assembly 4 includes two sets of upper electrode mechanisms 41 and one set of lower electrode mechanisms 42, and the transformer 5 includes a first transformer 51 and a second transformer 52. The two sets of upper electrode mechanisms 41 in the fixed welding assembly 3 and the two sets of upper electrode mechanisms 41 in the movable welding assembly 4 are electrically connected to the first transformer 51, and the other two sets of upper electrode mechanisms 41 in the fixed welding assembly 3 are electrically connected to the second transformer 52.

[0076] like Figure 2 and Figure 8As shown, in the six sets of upper electrode mechanisms 41, each pair of upper electrode mechanisms 41 is used to weld the two bottom feet 101 and the bottom plate 200 on one steel truss 100. The six sets of upper electrode mechanisms 41 respectively weld the three sets of bottom feet 101 arranged in parallel on the three steel trusses 100. The two middle sets of upper electrode mechanisms 41 and the corresponding lower electrode mechanisms 42 constitute a movable welding assembly 4 and are set on the feeding device 2. Each pair of upper electrode mechanisms 41 and one set of lower electrode mechanisms 42 are aligned vertically. Therefore, the upper electrode mechanism 41 is fixed by the welding bracket 6. The lower electrode mechanism 42 is set 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 sets of upper electrode mechanisms 41 in the fixed welding assembly 3 and the upper electrode mechanism 41 of the movable welding assembly 4 are simultaneously connected to the first transformer 51. After welding begins, the fixed welding assembly 3 welds the steel truss 100 and the base plate 200 at the first position. The movable welding assembly 4 welds the steel truss 100 and the base plate 200 as they move from the second position to the first position, thus achieving alternating welding. The other two sets 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 simultaneously, thus enabling the three steel trusses 100 to pass through the two transformers 5, saving the cost of using the transformers 5 and reducing the impact on the power grid.

[0077] In some embodiments, the follow-up welding apparatus further includes a welding bracket 6, which is used to mount the upper electrode mechanism 41 of the fixed welding assembly 3 and the movable welding assembly 4, such as... Figure 4 As shown, taking the installation of a movable welding assembly 4 on a welding bracket 6 as an example, the welding bracket 6 includes a support column 61, a support beam 62, and a dovetail frame 64. The bottom end of the support column 61 is fixed on the slide plate 21 (the support column 61 used to install the fixed welding assembly 3 is fixed on the frame 1. For the fixed welding assembly 3, the welding bracket 6 can adopt an integral structure with the frame 1). The two ends of the support beam 62 are respectively connected to the top ends of the two support columns 61. The dovetail frame 64 is slidably installed with the support beam 62 and can be locked at any position on the support beam 62. The sliding direction of the dovetail frame 64 is perpendicular to the stepping conveying direction. The upper electrode mechanism 41 is fixedly connected to the dovetail frame 64.

[0078] like Figure 4As shown, for the movable welding assembly 4, the upper fixed seat 411 of the upper electrode mechanism 41 is mounted on the welding bracket 6. The bottom end of the supporting column 61 is fixed to the sliding plate 21. The two ends of the supporting beam 62 are respectively connected to the tops of the two supporting columns 61. The supporting beam 62 is made of steel profile. The dovetail frame 64 is slidably fitted with the supporting beam 62 and can be locked at any position on the supporting beam 62. The upper fixed seat 411 is fixedly connected to the dovetail frame 64, allowing the position of the upper electrode mechanism 41 to be adjusted along the supporting beam 62 (Y direction). This facilitates the initial position of the movable welding assembly 4 to be adjusted according to the position of the base 101 of the steel truss 100. Angle supports 63 are provided between the two ends of the supporting beam 62 and the supporting column 61, improving the stability of the supporting 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 is adjustable, making it suitable for welding steel trusses 100 of different specifications at different sizes of base 101 positions. The aforementioned position adjustment refers to the initial position adjustment of the upper fixed seat 411 along the Y direction. After the position is adjusted, no further adjustment is required during the welding process.

[0079] In some embodiments, the upper electrode mechanism 41 includes an upper fixed seat 411, a second lifting drive member 412, and a guide post 413. The upper fixed seat 411 is mounted on the welding bracket 6. The second lifting drive member 412 is mounted on the upper fixed seat 411, and the output end of the second lifting drive member 412 slides vertically downward through the upper fixed seat 411. The top end of the guide post 413 is connected to the output end of the second lifting drive member 412, and the bottom end of the guide post 413 is provided with a connecting seat 414. An upper electrode seat 415 is provided on the connecting seat 414, and an electrode strip 416 is provided on the upper electrode seat 415. The connecting seat 414 is used for electrical connection with the first transformer 51 or the second transformer 52.

[0080] Taking the second lifting drive component 412, which uses a cylinder, as an example, Figure 6 The cylinder is fixed on the cylinder seat 417, which is fixed on the top of the upper fixed seat 411. The dovetail bracket 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 bracket 64 for installation. The top of the guide post 413 passes through the upper fixed seat 411 and is connected to the output end of the cylinder. The bottom end of the guide post 413 is connected to the connecting seat 414. The output end of the cylinder drives the guide post 413 to rise and fall. The guide post 413 drives the connecting seat 414 to move, which in turn drives the upper electrode seat 415 and the electrode strip 416 to rise and fall.

[0081] 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 is fixed on the slide plate 21 or the frame 1. The top of both sides of the groove wall is provided with an electrode block 422, and the two electrode blocks 422 are respectively provided for two electrode strips 416. The insulating plate 423 is provided at the bottom of the lower electrode seat 421 to isolate the frame 1 or the slide plate 21.

[0082] like Figure 7 As shown, the lower electrode holder 421 adopts a groove structure to isolate the two electrode blocks 422. The tops of the two groove walls of the lower electrode holder are provided with mounting grooves, in which the electrode blocks 422 are fixedly installed. The two electrode blocks 422 are positioned opposite the two bases 101 of the steel truss 100 and are opposite to the two sets of upper electrode mechanisms 41. An insulating plate 423 is provided at the bottom of the lower electrode holder 421 to achieve insulated installation between the lower electrode holder 421 and the frame 1 or the feeding device 2. Corresponding to the upper electrode mechanisms 41, three sets of lower electrode mechanisms 42 are provided, each set corresponding to the two sets of upper electrode mechanisms 41 below. Two sets of lower electrode mechanisms 42 are mounted on the frame 1, and one set of lower electrode mechanisms 42 is mounted on the slide plate 21.

[0083] When welding 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 together, so that the base plate 200 contacts the lower electrode block 422, forming a bridge-type closed loop. The high current of low voltage flows through the contact surface and adjacent area of ​​the steel truss 100 and the base plate 200, and the resulting resistance heat heats the contact part (that is, the weld point) to a melting or plastic state for welding.

[0084] In some embodiments, a first sliding component 7 is provided below the position of the slide plate 21 corresponding to the welding bracket 6, and a second sliding component 8 is provided below the position of the slide plate 21 corresponding to the lower electrode mechanism 42.

[0085] like Figure 3 As shown, first sliding components 7 are arranged on both sides along the Y direction below the slide plate 21, and a second sliding component 8 is arranged in the middle. The first sliding component 7 includes a first slider 71 and a first slide rail 72, one disposed at the bottom end of the slide plate 21 and the other on the frame 1. In this embodiment, the first slide rail 72 is disposed on the frame 1, and the first slide rail 72 is parallel to the axis of the ball screw 224. The first slider 71 is slidably disposed on the first slide rail 72. In this embodiment, the arrangement of the first slider 71 and the first slide rail 72 not only restricts the rotational movement of the first slide plate 21 around the rotation axis of the ball screw 224, ensuring that the first slide plate 21 moves only in the direction of the rotation axis of the ball screw 224, but also effectively reduces friction during movement and lowers energy loss.

[0086] The second sliding assembly 8 includes a second slide rail 82 and a second slider 81, one mounted on the frame 1 and the other on the slide plate 21. The second slide rail 82 is parallel to the first slide rail 72. In this embodiment, the second slide rail 82 is mounted on the frame 1, and the second slider 81 is slidably mounted on the second slide rail 82. The second slider 81 is fixedly mounted on the bottom surface of the slide plate 21. Since the movable welding assembly 4 is mounted on the slide plate 21, the upper electrode mechanism 41 will generate an impact force when it presses down during welding. Adding the second slide rail 82 can reduce the impact of the upper electrode mechanism 41 on the slide plate 21, so that the slide plate 21 remains stable and balanced.

[0087] The method steps for performing follow-up welding using the follow-up welding device provided above are as follows:

[0088] S1, the steel truss 100 and the base plate 200 are both mounted on the frame 1, and the first foot 101 of the steel truss 100 is located in the first position;

[0089] Initially, the slide plate 21 is located on the side closer to the frame 1. At the same time, the upper electrode mechanism 41 of the fixed welding assembly 3 mounted on the frame 1 and the movable welding assembly 4 mounted on the feeding device 2 are both located in a straight line, that is, aligned with the bottom foot 101 at the first position, ready to move down for welding.

[0090] S2, the moving welding assembly 4 welds the steel truss 100 and the base plate 200 at the first position; at this time, the clamping mechanism 23 clamps the steel truss 100 and the base plate 200.

[0091] S3, the fixed welding assembly 3 welds the steel truss 100 and the base plate 200 at the first position; the feeding device 2 drives the moving welding assembly 4 to move toward the second position along the stepping conveying direction of the steel truss 100 and the base plate 200, and the second position is located upstream of the first position.

[0092] At this time, the clamping mechanism 23 on the feeding device 2 releases the steel truss 100 and the base plate 200, and the upper electrode mechanism 41 of the fixed welding assembly 3 presses down on 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 moving welding assembly 4 are carried out simultaneously, and the moving welding assembly 4 can reach the second position at the same time as the fixed welding assembly 3 completes welding.

[0093] S4, when the moving welding assembly 4 reaches the second position, the fixed welding assembly 3 just completes the welding; the feeding device 2 clamps the steel truss 100 and the base plate 200 again and moves towards the first position, while the moving welding assembly 4 welds the steel truss 100 and the base plate 200.

[0094] In this step, after the movable welding assembly 4 reaches the second position, the clamping mechanism 23 clamps the steel truss 100 and the base plate 200. Then, the fixed welding assembly 3 releases the steel truss 100, and the movable welding assembly 4 performs welding while remaining stationary with the feeding device 2. This achieves alternating welding of the two steel trusses 100 on both sides by the fixed welding assembly 3 and the middle steel truss 100 by the movable welding assembly 4.

[0095] S5, when the moving welding component 4 reaches the first position again, the moving welding component 4 has just completed the welding; return to step S3 until the steel truss 100 and the base plate 200 are welded.

[0096] The feeding device 2 drives the moving welding assembly 4 in a reciprocating cycle until the second to last weld point is completed. At this time, after the moving 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, it is necessary to manually or other mechanisms 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.

[0097] During the welding process described above, two transformers 5 are controlled alternately. The second transformer 52 controls the two sets of upper electrode mechanisms 41 to discharge sequentially. One of the two sets of upper electrode mechanisms 41 is fed in and follows the welding process. Compared with the use of three transformers 5 in the prior art, this embodiment uses two transformers 5, which greatly reduces the impact of the transformers 5 on the external power grid, improves construction efficiency and reduces construction costs.

[0098] The follow-up welding device provided in the above embodiment, which takes a six-weld-point steel floor deck as an example, is also applicable to steel floor decks with twelve weld points and other numbers of weld points. Based on the number of steel trusses 100 on the base plate 200, the number of fixed welding components 3, movable welding components 4 and transformers 5 and their arrangement according to the alternating welding principle can all achieve the goal of reducing the number of transformers 5 and improving production efficiency. This article will not exhaustively list them.

[0099] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A follow-up welding device, characterized in that, include: The frame (1), the steel truss (100) to be welded and the base plate (200) are all mounted on the frame (1); Feeding device (2), which is slidably mounted on the frame (1), is used to synchronously step-feed the steel truss (100) and the base plate (200); A fixed welding assembly (3) is fixedly mounted on the frame (1) and welds the steel truss (100) and the base plate (200) at the first position. A mobile welding assembly (4) is mounted on a feeding device (2) and performs welding on the steel truss (100) and the base plate (200) during the step conveying process. The transformer (5), the fixed welding assembly (3) and the movable welding assembly (4) are all electrically connected to the transformer (5).

2. The follow-up welding device according to claim 1, characterized in that, The feeding device (2) includes: A sliding plate (21) is slidably mounted on the frame (1), and the movable welding assembly (4) is disposed on the sliding plate (21); A stepper drive assembly (22) is disposed on the frame (1) and is configured to drive the slide plate (21) to reciprocate between the first position and the second position; A clamping mechanism (23) is provided on the sliding plate (21) and is used to clamp and fix the steel truss (100) and the base 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 steel truss (100) and the two sides of the base plate (200).

4. The follow-up welding device according to claim 2, characterized in that, The clamping mechanism (23) includes: A clamping fixing seat (231) is provided on the sliding plate (21), and a guide shaft (235) is provided on the clamping fixing seat (231); The first lifting drive (232) is located at the top of the guide shaft (235), and the output end of the first lifting drive (232) is vertically downward. Upper pressure plate (233) is provided at the output end of the first lifting drive (232), and a pressure block (236) is provided on the lower surface of the upper pressure plate (233); A lower pressing plate (234) is disposed on the sliding plate (21) and is positioned directly opposite the pressing block (236). The first lifting drive (232) drives the pressing block (236) to descend and press the steel truss (100) and the bottom plate (200) onto the lower pressing 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 distance between the first position and the second position is equal to the distance between two adjacent feet (101) on the steel truss (100), and the distance between the movable welding assembly (4) and the clamping mechanism (23) is equal to the distance between two adjacent 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) includes four sets of upper electrode mechanisms (41) and two sets of lower electrode mechanisms (42). The movable welding assembly (4) includes two sets of upper electrode mechanisms (41) and one set of lower electrode mechanisms (42). The transformer (5) includes a first transformer (51) and a second transformer (52). The two sets of upper electrode mechanisms (41) in the fixed welding assembly (3) and the two sets of upper electrode mechanisms (41) in the movable welding assembly (4) are electrically connected to the first transformer (51). The other two sets 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), the welding bracket (6) comprising: A support column (61) is provided, the bottom end of which is fixed to the frame (1) or to the slide plate (21). A support beam (62) is provided, and the two ends of the support beam (62) are respectively connected to the tops of two support columns (61); The dovetail frame (64) is slidably fitted to the support beam (62) and can be locked at any position on the support beam (62). The sliding direction of the dovetail frame (64) is perpendicular to the stepping conveying direction. 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) includes: Upper fixing seat (411), the upper fixing seat (411) is disposed on the welding bracket (6); The second lifting drive (412) is disposed on the upper fixed seat (411), and the output end of the second lifting drive (412) slides vertically downward through the upper fixed seat (411). A guide post (413) is provided at the top end of which is connected to the output end of the second lifting drive (412). A connecting seat (414) is provided at the bottom end of the guide post (413). An upper electrode seat (415) is provided on the connecting seat (414). An electrode strip (416) is provided on the upper electrode seat (415). 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) includes: The lower electrode holder (421) is provided with a groove and is fixed on the slide plate (21) or the frame (1). Electrode blocks (422) are provided at the top of both sides of the groove wall, and the two electrode blocks (422) are respectively provided for the two electrode strips (416); An 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).

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