Shielded welding device

Abstract

The utility model belongs to truss floor panel technical field discloses an evasive welding device, evasive welding device includes frame, feed device and welding device, feed device sets up on the frame, and feed device is used for the synchronous step -by -step conveying of reinforcing steel bar truss and bottom plate, welding device includes a plurality of upper electrode mechanism setting on the frame, and upper electrode mechanism can follow the height direction and lift, to cooperate the reinforcing steel bar truss and bottom plate of welding step -by -step conveying, and the spacing between the relative two upper electrode mechanism of same reinforcing steel bar truss is adjustable, thereby can adjust the distance between the relative two upper electrode mechanism of same reinforcing steel bar truss, thereby can reduce the possibility of upper electrode mechanism impact abdominal pole muscle, promotes the welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of truss floor decking processing technology, and in particular to an avoidance welding device. Background Technology

[0002] During the production of truss floor decking, the trusses need to be welded first, then the steel trusses are welded onto the base plate, and finally cement is poured to form the deck.

[0003] Among the related technologies, there is a type of truss floor deck where a connecting piece is fixed to the base plate with screws, and then a steel truss without a base is welded to the connecting piece. This type of truss floor deck can save time in removing the base plate after pouring cement, and at the same time, it causes less damage to the floor deck.

[0004] However, the truss floor deck has no base on both sides of the truss, and the traditional welding machine can only move up and down. Therefore, when welding this truss floor deck, the upper electrode will collide with the web reinforcement between the adjacent welding positions when it moves to the next welding position. As a result, the welding process needs to be completed manually, which is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to provide an avoidance welding device in which the upper electrode can avoid the web bar reinforcement, thereby achieving automatic welding.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An avoidance welding device, comprising:

[0008] frame;

[0009] A feeding device is mounted on the frame and is used to synchronously and stepwise transport the steel truss and the base plate.

[0010] The welding device includes a plurality of upper electrode mechanisms mounted on the frame. The upper electrode mechanisms are capable of being raised and lowered to weld the steel truss conveyed by the stepping conveyor and the base plate. The spacing between two opposite upper electrode mechanisms welding the same steel truss is adjustable.

[0011] In some embodiments, the welding apparatus includes an avoidance drive member disposed on the frame, the avoidance drive member being capable of driving two opposing upper electrode mechanisms welding the same steel truss to move closer or further away from each other synchronously.

[0012] In some embodiments, the welding apparatus includes two opposing clearance racks, with a clearance gear meshing between the two clearance racks. The two opposing upper electrode mechanisms for welding the same steel truss are respectively connected to different clearance racks. The clearance drive member drives one of the clearance racks, the clearance gear, and the upper electrode mechanism.

[0013] In some embodiments, the upper electrode mechanisms located on the same side of different steel trusses are connected to the same clearance rack.

[0014] In some embodiments, the frame is provided with a clearance slide rail, and the upper electrode mechanism slides on the clearance slide rail.

[0015] In some embodiments, the welding apparatus includes a transition plate, the upper electrode mechanism is disposed on the transition plate, two avoidance slide rails are provided, the two avoidance slide rails are spaced apart, and the transition plate slides on the avoidance slide rails.

[0016] In some embodiments, the avoidance welding device further includes a positioning device disposed on the frame, the positioning device being used to position the steel truss and the base plate.

[0017] In some embodiments, the positioning device includes a base plate positioning mechanism and a steel truss positioning mechanism. The base plate positioning mechanism can support the base plate and limit its contact with both sides of the base plate along the conveying direction. The steel truss positioning mechanism can position and press the steel truss onto the base plate.

[0018] In some embodiments, the positioning device further includes an end positioning mechanism, which is capable of positioning the end face of the steel truss and / or the end face of the base plate.

[0019] In some embodiments, the feeding device includes a first stepping mechanism and a second stepping mechanism, which are disposed on both sides of the welding device along the conveying direction of the feeding device.

[0020] A welding method is also provided, which employs the avoidance welding device described above, and includes the following steps:

[0021] S1. Place the steel truss and the base plate on the machine frame, and align the welding device with the welding point of the connection between the steel truss and the base plate.

[0022] S2, Upper electrode mechanism presses down for welding;

[0023] S3. After welding is completed, the upper electrode mechanism rises, during which the two opposing upper electrode mechanisms welding the same steel truss move away from each other;

[0024] S4. The feeding device steps and conveys the steel truss and the base plate;

[0025] S5. Weld the two opposing upper electrode mechanisms of the same steel truss closer to each other;

[0026] S6, repeat S2 to S5 until welding is complete.

[0027] The beneficial effects of this utility model are:

[0028] Using the aforementioned avoidance welding device, after the upper electrode mechanism descends to weld the bottomless steel truss to the connecting piece of the base plate, during the upward process of the upper electrode mechanism, the distance between the two relative upper electrode mechanisms welding the same steel truss is increased, thereby avoiding the web reinforcement on the steel truss; then, after the feeding device advances the steel truss and the base plate a certain distance, the distance between the two relative upper electrode mechanisms welding the same steel truss is reduced again to perform the next welding, thus achieving automatic welding in a sequential cycle and improving efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the avoidance welding device of this utility model;

[0030] Figure 2 This is a cross-sectional view of the avoidance welding device of this utility model;

[0031] Figure 3 This is a schematic diagram of the steel truss positioning mechanism in this utility model;

[0032] Figure 4 This is a schematic diagram of the bottom plate positioning mechanism in this utility model;

[0033] Figure 5 This is a schematic diagram of the end positioning mechanism of this utility model;

[0034] Figure 6 This is a schematic diagram of the first stepper mechanism in this utility model;

[0035] Figure 7 This is a schematic diagram of the second stepping mechanism in this utility model;

[0036] Figure 8 This is a schematic diagram of the first clamping mechanism in this utility model;

[0037] Figure 9 This is a partial schematic diagram of the welding device in this utility model;

[0038] Figure 10 This is a cross-sectional view of the welding device in this utility model;

[0039] Figure 11 This is a schematic diagram showing the welding device in this utility model avoiding the rack;

[0040] Figure 12 This is a schematic diagram of the upper electrode mechanism in this utility model;

[0041] Figure 13 This is a partial schematic diagram of a truss floor deck in related technologies;

[0042] Figure 14 This is a flowchart of the welding method.

[0043] In the picture:

[0044] 1. Rack;

[0045] 2. Positioning device; 21. Steel truss positioning mechanism; 211. Material pressing bracket; 212. Material pressing connecting plate; 213. First lifting drive component; 214. Positioning block; 2141. Restriction groove; 215. Fifth lifting drive component; 2151. Handwheel; 2152. Screw; 22. Base plate positioning mechanism; 221. Roller seat; 222. Positioning component; 2221. Adjusting seat; 2222. Adjusting shaft; 2223. Positioning bearing; 223. Conveying roller; 23. End positioning mechanism; 231. Baffle positioning bracket; 232. Second lifting drive component; 233. First baffle; 234. Second baffle;

[0046] 3. Feeding device; 31. First stepping mechanism; 311. First slide plate; 3111. First slider; 3112. First slide rail; 312. First clamping mechanism; 3121. Clamping fixing seat; 3122. Third lifting drive component; 3123. Upper pressure plate; 3124. Lower pressure plate; 3125. Guide shaft; 3126. Pressure block; 3127. Cylinder connecting plate; 313. First stepping drive component; 314. Motor bracket; 315. Coupling; 316. Ball screw; 3161. Screw support seat; 3162. Stepper screw female seat; 317. Second slide rail; 318. Second slider; 319. First support roller; 32. Second stepping mechanism; 321. Second slide plate; 3211. Third slider; 3212. Third slide rail; 322. Second clamping mechanism; 323. Second stepping drive component; 324. First cylinder seat; 325. Fisheye bearing; 326. Connecting shaft; 327. Second support roller;

[0047] 4. Welding device; 41. Transformer; 42. Upper electrode mechanism; 421. Fourth lifting drive component; 422. First connecting seat; 423. Upper fixed seat; 424. Guide post; 425. Upper electrode seat; 426. Circular electrode; 427. Second connecting seat; 43. Avoidance drive component; 44. Avoidance rack; 45. Avoidance gear; 46. Avoidance slide rail; 47. Avoidance slider; 48. Transition plate;

[0048] 10. Truss floor deck; 101. Base plate; 102. Steel truss; 1021. Web reinforcement; 103. Connecting parts. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] like Figures 1 to 12 As shown, this application provides an avoidance welding device for welding a baseless steel truss 102 to a connector 103 on a base plate 101 to form a... Figure 13 The truss floor deck 10 shown is as follows: Figure 1As shown, the avoidance welding device includes a frame 1, a feeding device 3, and a welding device 4. The feeding device 3 is mounted on the frame 1 and is used for synchronous step-by-step conveying of the steel truss 102 and the base plate 101 (the conveying direction is...). Figure 1 The X direction in the image is the length direction of the base plate 101; the welding device 4 includes a plurality of upper electrode mechanisms 42 disposed on the frame 1, the upper electrode mechanisms 42 being capable of operating along the height direction (X direction, which is the length direction of the base plate 101); the welding device 4 includes a plurality of upper electrode mechanisms 42 disposed on the frame 1, the upper electrode mechanisms 42 being capable of operating along the height direction (X direction, which is the length direction of the base plate 10 Figure 1 The Z-axis of the steel truss 102 and the base plate 101 are lifted and lowered to weld the steel truss 102 and the base plate 101 conveyed by the stepping. The distance between the two upper electrode mechanisms 42 of the same steel truss 102 is adjustable.

[0054] Using the aforementioned avoidance welding device, after the upper electrode mechanism 42 descends to weld the baseless steel truss 102 to the connector 103 of the base plate 101, during the upward movement of the upper electrode mechanism 42, the distance between the two relative upper electrode mechanisms 42 welding the same steel truss 102 is increased, thereby avoiding the web reinforcement 1021 on the steel truss 102. Subsequently, after the feeding device 3 advances the steel truss 102 and the base plate 101 to a certain distance, the distance between the two relative upper electrode mechanisms 42 welding the same steel truss 102 is reduced to perform the next welding, thus completing the automatic welding in a cyclical manner and improving efficiency.

[0055] It is understandable that, along its width direction, the base plate 101 ( Figure 1 Multiple steel trusses 102 can be welded side by side in the Y direction (without any specific limit on the number).

[0056] like Figure 1 As shown, in some embodiments, the avoidance welding device includes a positioning device 2, which is disposed on the frame 1. The positioning device 2 is used to position the steel truss 102 and the base plate 101, which may include, but is not limited to, end positioning of the initial position of the steel truss 102 and the base plate 101 and side guiding positioning during the welding process.

[0057] like Figure 2 As shown, in some embodiments, the positioning device 2 includes a base plate positioning mechanism 22 and a steel truss positioning mechanism 21. Two base plate positioning mechanisms are provided, defining the position of the welding device 4 on the frame 1 as the welding position. The two base plate positioning mechanisms 22 are respectively located at both ends of the welding position along the conveying direction of the base plate 101 and the steel truss 102. The base plate positioning mechanism 22 can support the base plate 101 and abut against both sides of the base plate 101 along the conveying direction for limiting its position. The steel truss positioning mechanism 21 is located above the base plate positioning mechanism 22. It can be understood that two sets of steel truss positioning mechanisms 21 can be provided, or only one set can be provided. Figure 3As shown, the steel truss positioning mechanism 21 includes a positioning block 214 and a first lifting drive 213. The positioning block 214 is located at the output end of the first lifting drive 213. The first lifting drive 213 is configured to drive the positioning block 214 to move up and down, so that the positioning block 214 can position the steel truss 102 and press it onto the base plate 101.

[0058] In the current embodiment, the first lifting drive component 213 is a linear drive component, which may be, but is not limited to, a cylinder. The number of the first lifting drive component 213 and the number of positioning blocks 214 are matched with the number of steel trusses 102 to facilitate simultaneous positioning of each steel truss 102. In the current embodiment, six first lifting drive components 213 are spaced apart on the pressure connecting plate 212 and correspond one-to-one with the standard positions of the six steel trusses 102. The two ends of the pressure connecting plate 212 are respectively fixed on two pressure brackets 211. The two pressure brackets 211 are symmetrically arranged on both sides of the welding position, and the bottom end of the pressure brackets 211 is fixed on the frame 1. The output end of the first lifting drive component 213 is downward and connected to the positioning block 214. Further, the positioning block 214 is correspondingly arranged with the steel truss 102. Each positioning block 214 is provided with a limiting groove 2141, which is adapted to the connection position of the top bar and web bar of the steel truss 102. For example, the limiting groove 2141 may be, but is not limited to, a V-shaped groove. After the base plate 101 is positioned by the base plate positioning mechanism 22, the position of the steel truss 102 above the base plate 101 may deviate slightly from the required standard position. At this time, by moving the limiting groove 2141 downwards, the position of the steel truss 102 can be straightened, thus achieving the purpose of positioning the steel truss 102. Pressing the positioning block 214 onto the steel truss 102 during welding can also prevent the steel truss 102 from warping during the welding process, thereby improving the welding quality. Furthermore, the steel truss positioning mechanism 21 also includes a fifth lifting drive component 215. In the current embodiment, the fifth lifting drive component 215 is a manual drive component. Of course, a pneumatic or electric drive mechanism such as a cylinder can also be used. When the fifth lifting drive component 215 is a manual drive component, it includes a handwheel 2151 and a lead screw 2152. The handwheel 2151 is fixed to the top of the lead screw 2152, and the bottom of the lead screw 2152 transmits the pressure support 211 and is threadedly connected to the pressure connecting plate 212. At this time, the pressure connecting plate 212 is slidably connected to the pressure support 211. The handwheel 2151 drives the lead screw 2152 to rotate, and the pressure connecting plate 212 moves up and down along the pressure support 211, thereby increasing the height adjustment range of the positioning block 214 and making it more widely applicable.

[0059] like Figure 3As shown, two base plate positioning mechanisms 22 are used to double-limit the base plates 101 at both ends of the welding position to ensure the stability of the base plates 101 during stepping movement and welding. The two base plate positioning mechanisms 22 can adopt the same structure. One base plate positioning mechanism 22 is used to position the base plate 101 before welding so that the base plate 101 is in a proper position. The other base plate positioning mechanism 22 is installed at the rear end of the frame 1, located downstream of the stepping forward direction of the base plate 101, and is used to support and position the welded steel truss 102 and the base plate 101.

[0060] like Figure 4 As shown, specifically, the base plate positioning mechanism 22 includes a roller seat 221 and positioning elements 222. The roller seat 221 is mounted on the frame 1, and multiple conveying rollers 223 are rotatably mounted on the roller seat 221 to roll and support the base plate 101. The conveying rollers 223 can reduce the frictional resistance of the base plate 101 during the conveying process. Multiple positioning elements 222 are provided, and the positions of the multiple positioning elements 222 are adjustable on the roller seat 221. Any two positioning elements 222 arranged opposite each other on both sides along the conveying direction can abut against both sides of the base plate 101 to limit the position. Positioning element 222 is located between two adjacent conveying rollers 223. Positioning element 222 includes adjusting seat 2221, adjusting shaft 2222, and positioning bearing 2223. Adjusting seat 2221 is adjustablely located on roller seat 221. Adjusting seat 2221 includes a fixed part and an adjustable part. The fixed part is fixed on roller seat 221, and the adjustable part is connected to the fixed part by screws and bolts. The adjustable part is slidably installed on roller seat 221, and the sliding direction is perpendicular to the conveying direction of base plate 101, so as to adapt to the width specification of base plate 101 for adjustment. Adjusting shaft 2222 and adjustable part are adjustable along the height direction. Positioning bearing 2223 is fixedly installed on adjusting shaft 2222. The height of positioning bearing 2223 can be adjusted by adjusting shaft 2222 so that positioning bearing 2223 abuts against base plate 101 for positioning. In some embodiments, the positioning member 222 further includes a positioning shaft, which is detachably connected to the positioning bearing 2223 to increase the positioning adjustment range of the positioning member 222 and adapt to different base plate 101 specifications.

[0061] like Figure 2 and Figure 5 As shown, in some embodiments, the positioning device 2 further includes an end positioning mechanism 23, which includes a first baffle 233 and a second lifting drive member 232. The second lifting drive member 232 is configured to drive the first baffle 233 to move up and down to position the end face of the steel truss 102 and / or the end face of the base plate 101.

[0062] A baffle positioning bracket 231 is fixedly mounted on the frame 1 and located below the base plate 101 to be welded. A second lifting drive component 232 is mounted on the baffle positioning bracket 231, with its output end vertically extending upwards through the baffle positioning bracket 231. A first baffle 233 is fixedly connected to the output end of the second lifting drive component 232 for lifting and lowering movement. The first baffle 233 is used for the initial positioning of the steel truss 102 and the base plate 101. When the steel truss 102 and the base plate 101 are conveyed forward, the second lifting drive component 232 drives the first baffle 233 to rise. When the steel truss 102 and the base plate 101 are conveyed to the first baffle 233, their ends are blocked by the first baffle 233, at which point the initial positions of the steel truss 102 and the base plate 101 are positioned. The initial position ensures that the first weld point of the connecting piece 103 on the steel truss 102 and the base plate 101 is in the welding position. After positioning, the second lifting drive 232 lowers the first baffle 233, and the welding device 4 begins welding. The first baffle 233 does not affect the stepping conveying of the steel truss 102 and the base plate 101. The second lifting drive 232 can be, but is not limited to, a linear drive mechanism such as a cylinder.

[0063] For some truss floor deck slabs 10 where the ends of the steel truss 102 protrude from the base plate 101 for welding, a second baffle 234 is detachably installed on the first baffle 233. The first baffle 233 and the second baffle 234 respectively abut against the end face of the steel truss 102 and the end face of the base plate 101. The second baffle 234 is located on the side of the first baffle 233 facing the material feeding direction of the steel truss 102 and the base plate 101. When the steel truss 102 and the base plate 101 are conveyed, the end of the base plate 101 first abuts against the second baffle 234. At this time, the end of the steel truss 102 has not yet contacted the first baffle 233. When the steel truss 102 continues to be conveyed forward, the end of the steel truss 102 abuts against the first baffle 233. At this time, the end of the steel truss 102 protrudes from the end of the base plate 101. Understandably, if the steel truss 102 is not required to protrude from the end of the base plate 101, the second baffle 234 can be removed.

[0064] like Figure 2 As shown, in some embodiments, the feeding device 3 includes a first stepping mechanism 31 and a second stepping mechanism 32. The first stepping mechanism 31 and the second stepping mechanism 32 are respectively disposed on both sides of the welding device 4 along the conveying direction and are both fixed on the frame 1.

[0065] like Figure 6As shown, the first stepping mechanism 31 includes a first sliding plate 311 and a first clamping mechanism 312. The first sliding plate 311 is slidably mounted on the frame 1 and located upstream of the welding device 4. The first clamping mechanism 312 is provided on the first sliding plate 311 and is used to clamp the base plate 101. The first sliding plate 311 can drive the steel truss 102 and the base plate 101 to move stepwise along the conveying direction; Figure 7 As shown, the second stepping mechanism 32 includes a second sliding plate 321 and a second clamping mechanism 322. The second sliding plate 321 is slidably mounted on the frame 1 and located downstream of the welding device 4. The second clamping mechanism 322 is provided on the second sliding plate 321 and is used to clamp and fix the base plate 101. The second sliding plate 321 can drive the steel truss 102 and the base plate 101 to step along the conveying direction. Due to the positional relationship, the first stepping mechanism 31 cannot clamp the steel truss 102 and the base plate 101 to be welded in the last step. Therefore, the final stepping welding of the steel truss 102 and the base plate 101 is achieved by clamping and stepping through the second stepping mechanism 32.

[0066] The first slide plate 311 is equipped with two sets of first clamping mechanisms 312, and the second slide plate 321 is equipped with two sets of second clamping mechanisms 322. The first clamping mechanisms 312 and the second clamping mechanisms 322 are used to clamp and hold the steel truss 102 and the base plate 101, respectively. The first stepping mechanism 31 is used to synchronously feed the steel truss 102 and the base plate 101 from the first weld point to the penultimate weld point. The second stepping mechanism 32 is located downstream of the first stepping mechanism 31 and is used to synchronously feed the steel truss 102 and the base plate 101 to the last weld point. In addition, during the automatic welding process, before the first stepping mechanism 31 returns to its original position, the second clamping mechanisms 322 on the second stepping mechanism 32 will first clamp and hold the steel truss 102 and the base plate 101. Then, the first clamping mechanisms 312 on the first stepping mechanism 31 will release the clamping of the steel truss 102 and the base plate 101 to prevent the steel truss 102 and the base plate 101 from being displaced by friction. Before the first stepping mechanism 31 prepares to step forward, the first clamping mechanism 312 on the first stepping mechanism 31 will first clamp the steel truss 102 and the base plate 101. Then, the second clamping mechanism 322 on the second stepping mechanism 32 will release the clamping of the steel truss 102 and the base plate 101. That is, during the stepping and welding process of the steel truss 102 and the base plate 101, one of the first clamping mechanism 312 and the second clamping mechanism 322 will always clamp the steel truss 102 and the base plate 101 to ensure the welding effect of the steel truss 102 and the base plate 101.

[0067] Specifically, the first step-moving mechanism 31 also includes a first step-moving drive member 313, which is mounted on the frame 1. The first slide plate 311 is slidably connected to the frame 1, and the first step-moving drive member 313 drives the first slide plate 311 to slide linearly relative to the frame 1. The first clamping mechanism 312 is mounted on the first slide plate 311 and can move synchronously with the first slide plate 311. With this structure, when the first clamping mechanism 312 clamps the steel truss 102 and the base plate 101, the first step-moving drive member 313 drives the first slide plate 311 to slide, and at the same time drives the first clamping mechanism 312 mounted on the first slide plate 311 and the steel truss 102 and the base plate 101 clamped by the first clamping mechanism 312 to slide synchronously, so that the steel truss 102 and the base plate 101 move synchronously to the welding device 4.

[0068] In the current embodiment, the first stepper drive 313 may be, but is not limited to, a motor. The motor is mounted on a motor bracket 314, which is mounted on the front end of the frame 1. The output end of the motor can be connected to the first end of the ball screw 316 via a coupling 315. Screw support seats 3161 are provided on both sides of the motor bracket 314. The ball screw 316 is rotatably passed through the screw support seats 3161. The second end of the ball screw 316 is threadedly connected to the stepper screw female seat 3162. The stepper screw female seat 3162 is fixedly connected to the first slide plate 311. First sliders 3111 are provided at the bottom of both sides of the first slide plate 311. A first slide rail 3112 is provided on the frame 1. The first slide rail 3112 is parallel to the axis of the ball screw 316. The first sliders 3111 are slidably disposed on the first slide rail 3112. When the motor drives the ball screw 316 to rotate, the stepper screw mother seat 3162 moves linearly relative to the ball screw 316, which in turn drives the first slide plate 311 to move linearly. At this time, the first clamping mechanism 312 installed on the first slide plate 311, as well as the steel truss 102 and the base plate 101 clamped by the first clamping mechanism 312, will also be driven to move.

[0069] In the current embodiment, the arrangement of the first slider 3111 and the first slide rail 3112 not only restricts the rotational movement of the first slide plate 311 around the rotation axis of the ball screw 316, ensuring that the first slide plate 311 moves only in the axial direction of the rotation axis of the ball screw 316, but also effectively reduces the friction during the movement and reduces energy loss.

[0070] Furthermore, two sets of sliding components are added below the first slide plate 311 in the middle. The sliding components include a second slide rail 317 and a second slider 318. The second slide rail 317 is parallel to the first slide rail 3112. The second slide rail 317 is mounted on the frame 1, and the second slider 318 is slidably mounted on the second slide rail 317. The second slider 318 is fixedly mounted on the bottom surface of the first slide plate 311. The upper electrode mechanism 42 will generate an impact force when welding and pressing down. The second slide rail 317 is added to reduce the impact on the first slide plate 311. Furthermore, the first stepper mechanism 31 also includes a first support roller 319. The first support roller 319 is rotatably mounted on the first slide plate 311. The first support roller 319 is used to assist the first slide plate 311 in rolling and supporting the base plate 101, reducing the friction between the base plate 101 and the first slide plate 311.

[0071] 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 first slide plate 311. The axis of the output shaft of the motor coincides with the axis of the ball screw 316.

[0072] It is understood that the first stepper drive 313 in this embodiment can also be a cylinder, and the output end of the cylinder is connected to the first slide plate 311 to drive the first slide plate 311 to move.

[0073] like Figure 7 As shown, the second stepping mechanism 32 also includes a second stepping drive 323, which is mounted on the frame 1. The second slide plate 321 is slidably connected to the frame 1, and the second stepping drive 323 drives the second slide plate 321 to slide linearly relative to the frame 1. The second clamping mechanism 322 is mounted on the second slide plate 321 and can slide with the second slide plate 321. When the second clamping mechanism 322 clamps the steel truss 102 and the base plate 101, the second stepping drive 323 drives the second slide plate 321 to slide, and simultaneously drives the second clamping mechanism 322 mounted on the second slide plate 321, as well as the steel truss 102 and the base plate 101 clamped by the second clamping mechanism 322, to step synchronously.

[0074] For example, the second stepper drive 323 may be, but is not limited to, a cylinder. The cylinder is mounted on a first cylinder holder 324, which is mounted at the rear end of the frame 1. The output end of the cylinder is connected to a connecting shaft 326 via a fisheye bearing 325. The axis of the connecting shaft 326 is perpendicular to the axis of the cylinder output end. The second slide plate 321 is fixed to the connecting shaft 326. By extending or retracting the cylinder, the second slide plate 321 can be driven to move linearly.

[0075] Furthermore, a third slider 3211 is provided on both sides of the bottom of the second slide plate 321, and a third slide rail 3212 is provided on the frame 1. The third slider 3211 slides on the third slide rail 3212, and the third slide rail 3212 is parallel to the axis of the output end of the second stepper drive 323.

[0076] The first stepping mechanism 31 and the second stepping mechanism 32 described above can adopt the same drive structure to drive the first slide plate 311 and the second slide plate 321 to slide on the frame 1, respectively. Further, a second support roller 327 is rotatably arranged on the second slide plate 321. The second support roller 327 is used to roll and support the base plate 101, reducing the friction between the base plate 101 and the second slide plate 321.

[0077] In some embodiments, the first clamping mechanism 312 and the second clamping mechanism 322 adopt the same structure, with two first clamping mechanisms 312 disposed on the first slide plate 311 and two second clamping mechanisms 322 disposed on the second slide plate 321. Taking the first clamping mechanism 312 disposed on the first slide plate 311 as an example, ... Figure 8 As shown, the first clamping mechanism 312 includes a clamping fixing seat 3121, a third lifting drive member 3122, an upper pressure plate 3123, and a lower pressure plate 3124. The clamping fixing seat 3121 is disposed on the first sliding plate 311, and a guide shaft 3125 is provided on the clamping fixing seat 3121. The third lifting drive member 3122 is disposed at the top of the guide shaft 3125, and the output end of the third lifting drive member 3122 is vertically downward. The upper pressure plate 3123 is disposed at the output end of the third lifting drive member 3122, and a pressure block 3126 is provided on the lower surface of the upper pressure plate 3123. The lower pressure plate 3124 is disposed on the first sliding plate 311, and the lower pressure plate 3124 is positioned directly opposite the pressure block 3126. The third lifting drive member 3122 drives the pressure block 3126 to descend and press the steel truss 102 and the base plate 101 onto the lower pressure plate 3124.

[0078] In the current embodiment, taking the third lifting drive component 3122 as an example, the cylinder is a pressure plate cylinder, which is mounted on the clamping and fixing seat 3121 via four guide shafts 3125 and two cylinder connecting plates 3127. The two clamping and fixing seats 3121 are symmetrically arranged on the first sliding plate 311. The pressure plate cylinder can drive the upper pressure plate 3123 to move up and down, pressing down and lifting up. The four guide shafts 3125 pass through the upper pressure plate 3123 to provide a guiding function.

[0079] When the second clamping mechanism 322 on the second stepping mechanism 32 clamps the steel truss 102 and the base plate 101, the steel truss positioning mechanism 21 simultaneously clamps and positions the steel truss 102. Thus, by clamping and fixing the steel truss 102 and the base plate 101 at the front and rear positions, the steel truss 102 and the base plate 101 can be effectively prevented from warping during the welding process.

[0080] like Figures 9 to 12 As shown, in some embodiments, the welding device 4 includes several upper electrode mechanisms 42 and a transformer 41. Each upper electrode mechanism 42 includes a fourth lifting drive 421, a first connecting seat 422, an upper fixed seat 423, a guide post 424, an upper electrode seat 425, a round electrode 426, and a second connecting seat 427. The fourth lifting drive 421 is mounted on the upper fixed seat 423 via the first connecting seat 422, and the output end of the fourth lifting drive 421 slides vertically downward through the upper fixed seat 423. The top of the column 424 is fitted with a fixed seat 423 and connected to the output end of the fourth lifting drive 421. The bottom of the column 424 is provided with a second connecting seat 427. The second connecting seat 427 is provided with an upper electrode seat 425. The upper electrode seat 425 is provided with a round electrode 426. The upper electrode seat 425 is electrically connected to the transformer 41. The fourth lifting drive 421 drives the column 424 to move up and down. The column 424 drives the second connecting seat 427 to move, which in turn drives the upper electrode seat 425 and the round electrode 426 to move up and down.

[0081] It should be noted that each pair of adjacent upper electrode mechanisms 42 are connected to the positive and negative poles of the transformer respectively. After the upper electrode mechanism 42 is pressed down, the two pairs of adjacent circular electrodes 426 are pressed down to clamp the steel truss and the base plate 101, forming a closed loop for resistance welding.

[0082] like Figure 10 and Figure 11 As shown, in some embodiments, the welding device 4 includes an avoidance drive 43, which is disposed on the frame 1, thereby driving the two opposing upper electrode mechanisms 42 of welding the same steel truss 102 to move closer or further away from each other synchronously to avoid the web reinforcement 1021.

[0083] Specifically, the welding device 4 also includes two opposing clearance racks 44, which extend along the Y direction and have teeth that face each other. A clearance gear 45 meshes between the two clearance racks 44. The upper fixed seats 423 on the two opposing upper electrode mechanisms 42 of the same steel truss 102 are fixed to different clearance racks 44. Thus, when the clearance gear 45 is driven to rotate or one of the clearance racks 44 is driven to move in one direction of the Y direction, the other clearance rack 44 can move in another direction of the Y direction. Thus, during the movement of the clearance racks 44, the distance between the two opposing upper electrode mechanisms 42 of the same steel truss 102 is synchronously approached or synchronously moved away. For ease of actuation, the avoidance drive member 43 can be connected to the avoidance rack 44 to drive the avoidance rack 44 to move in the Y direction; or the avoidance drive member 43 can be connected to the upper fixed seat 423 in one of the upper electrode mechanisms 42, thereby directly driving the upper electrode mechanism 42 to move in the Y direction, and then transmitting the movement to the other upper electrode mechanism 42 in the opposite direction through the avoidance rack 44 and the avoidance gear 45; or the avoidance drive member 43 can be connected to the avoidance gear 45, thereby driving the avoidance gear 45 to rotate, and thus enabling the two avoidance racks 44 to move in opposite directions. For example, the avoidance drive member 43 can be a linear drive member, which can be, but is not limited to, a cylinder; in this case, the output end of the avoidance drive member 43 can be connected to the upper fixed seat 423 or the avoidance rack 44; the avoidance drive member 43 can also be a rotary drive member, which can be, but is not limited to, a motor; in this case, the output end of the avoidance drive member 43 can be connected to the avoidance gear 45.

[0084] It should be noted that when the base plate 101 has multiple steel trusses 102, each steel truss 102 can be equipped with a set of avoidance drive components 43, avoidance racks 44, and avoidance gears 45. To reduce costs and improve the synchronicity of the movement of the upper electrode mechanism 42 for welding different steel trusses, in this embodiment, one avoidance drive component 43 is provided, two avoidance racks 44 are provided, and one, two, or more avoidance gears 45 can be provided, but not limited to. Two or more avoidance gears 45 can improve the stability of the avoidance rack 44 transmission. In this embodiment, the upper electrode mechanisms 42 located on the same side of different steel trusses 102 are connected to the same avoidance rack 44, so that the upper electrode mechanisms 42 on different steel trusses 102 can move synchronously. Taking a base plate 101 with 6 steel trusses 102 as an example, 12 upper electrode mechanisms 42 are set, numbered sequentially from one end to the other along the Y direction as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12. Among them, No. 1 and No. 2 are welded together to the same steel truss 102; and so on, No. 3 and No. 4 are welded together, No. 5 and No. 6 are welded together, No. 7 and No. 8 are welded together, No. 9 and No. 10 are welded together, and No. 11 and No. 12 are welded together. Thus, upper electrode mechanisms 42 No. 1, 3, 5, 7, 9, and 11 are connected to one of the avoidance driving components 43; while upper electrode mechanisms 42 No. 2, 4, 6, 8, 10, and 12 are connected to another avoidance driving component 43, so that the two relative upper electrode mechanisms 42 that are welded to the same steel truss 102 can move closer to or away from the steel truss at the same time.

[0085] In some embodiments, the frame 1 is further provided with a clearance slide rail 46, which extends along the Y direction. A sliding clearance slider 47 is provided on the clearance slide rail 46, and the number of clearance sliders 47 corresponds one-to-one with the number of upper electrode mechanisms 42. The upper fixed seat 423 in the upper electrode mechanism 42 is connected to the clearance slider 47, thereby enabling the upper electrode mechanism 42 to move along the clearance slide rail 46, further improving the stability of the movement of the upper electrode mechanism 42. Furthermore, two clearance slide rails 46 are provided, arranged along the X direction on opposite sides of the upper electrode mechanism 42. The welding device 4 also includes a transition plate 48, on which the upper fixed seat 423 in the upper electrode mechanism 42 is fixed. The transition plate 48 slides on the clearance slide rail 46, further improving the stability of the movement of the upper electrode mechanism 42 through the two clearance slide rails 46.

[0086] like Figure 14 As shown, this application also provides a welding method that employs the aforementioned avoidance welding device, the welding method comprising the following steps:

[0087] S1. Place the steel truss 102 and the base plate 101 on the frame 1, so that the welding device 4 is directly opposite the welding point of the connecting parts on the steel truss 102 and the base plate 101.

[0088] S2, Upper electrode mechanism 42 downward pressure welding;

[0089] S3. After welding is completed, the upper electrode mechanism 42 rises, during which the two opposite upper electrode mechanisms 42 of the same steel truss 102 are moved away from each other.

[0090] S4, feeding device 3, step-by-step conveying of steel truss 102 and base plate 101;

[0091] S5. Weld the two opposing upper electrode mechanisms 42 of the same steel truss 102 closer to each other;

[0092] S6. Repeat steps S2 to S5 until all the connecting parts on the steel truss 102 and the base plate 101 are welded together. It should be noted that in S6, the weld points need to be confirmed. If the weld point at the welding position is the last weld point, the welding is completed and the process ends; otherwise, after welding the two opposite upper electrode mechanisms 42 of the same steel truss 102 to be closer to each other, continue repeating steps S2 to S5.

[0093] In some embodiments, before S1, the steel truss 102 and the base plate 101 need to be conveyed along the X direction. The first baffle 233 of the end positioning mechanism 23 rises, and the steel truss 102 and the base plate 101 are blocked by the first baffle 233. At this time, the steel truss 102 and the base plate 101 are positioned, and the first baffle 233 is reset. The two base plate positioning mechanisms 22 position the base plate 101 in the width direction. The steel truss positioning mechanism 21 positions the steel truss 102, and the steel truss 102 and the base plate 101 are stably placed on the frame 1.

[0094] The above welding method, when welding the connectors from the steel truss 102 to the base plate 101, can adjust the distance between two opposing upper electrode mechanisms 42 on the same steel truss 102, thereby reducing the possibility of the upper electrode mechanism 42 colliding with the web reinforcement 1021, and thus enabling automatic welding. Figure 13 The truss floor deck 10 shown improves welding efficiency.

[0095] 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. An avoidance welding device, characterized in that, include: Rack (1); A feeding device (3) is installed on the frame (1). The feeding device (3) is used to synchronously step-feed the steel truss (102) and the base plate (101). The welding device (4) includes a plurality of upper electrode mechanisms (42) disposed on the frame (1). The upper electrode mechanisms (42) are capable of lifting and lowering to weld the steel truss (102) conveyed by step and the base plate (101). The spacing between two opposite upper electrode mechanisms (42) welding the same steel truss (102) is adjustable.

2. The avoidance welding device according to claim 1, characterized in that, The welding device (4) includes a clearance drive (43) which is mounted on the frame (1). The clearance drive (43) can drive two opposing upper electrode mechanisms (42) that are welding the same steel truss (102) to move closer or further away from each other synchronously.

3. The avoidance welding device according to claim 2, characterized in that, The welding device (4) includes two opposing racks (44), with an avoidance gear (45) clamped and engaged between the two racks (44). The two opposing upper electrode mechanisms (42) for welding the same steel truss (102) are respectively connected to different racks (44). The avoidance drive (43) drives one of the racks (44), the avoidance gear (45), and the upper electrode mechanism (42).

4. The avoidance welding device according to claim 3, characterized in that, The upper electrode mechanism (42) located on the same side of different steel trusses (102) is connected to the same clearance rack (44).

5. The avoidance welding device according to claim 1, characterized in that, The frame (1) is provided with a clearance slide rail (46), and the upper electrode mechanism (42) slides on the clearance slide rail (46).

6. The avoidance welding device according to claim 5, characterized in that, The welding device (4) includes a transition plate (48), the upper electrode mechanism (42) is disposed on the transition plate (48), two avoidance slide rails (46) are provided, the two avoidance slide rails (46) are spaced apart, and the transition plate (48) slides on the avoidance slide rails (46).

7. The avoidance welding device according to any one of claims 1-6, characterized in that, The avoidance welding device also includes a positioning device (2), which is mounted on the frame (1) and is used to position the steel truss (102) and the base plate (101).

8. The avoidance welding device according to claim 7, characterized in that, The positioning device (2) includes a base plate positioning mechanism (22) and a steel truss positioning mechanism (21). The base plate positioning mechanism (22) can support the base plate (101) and limit the base plate (101) to abut against both sides along the conveying direction. The steel truss positioning mechanism (21) can position and press the steel truss (102) onto the base plate (101).

9. The avoidance welding device according to claim 7, characterized in that, The positioning device (2) further includes an end positioning mechanism (23), which is capable of positioning the end face of the steel truss (102) and / or the end face of the base plate (101).

10. The avoidance welding device according to any one of claims 1-6, characterized in that, The feeding device (3) includes a first stepping mechanism (31) and a second stepping mechanism (32), which are arranged on both sides of the welding device (4) along the conveying direction of the feeding device (3).

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