Resistance welding apparatus

Abstract

The utility model discloses a resistance welding equipment, including support positioning subassembly and resistance welding machine for supporting and positioning crossbeam frame, be equipped with the first electrode on support positioning subassembly, be equipped with the movable joint structure for the movable joint welding before crossbeam frame's mounting plate of installation board on the first electrode, resistance welding machine includes the second electrode, and the second electrode is cooperated with the first electrode and is welded on the first end inner wall of crossbeam frame side plate with the mounting plate, can reliably support crossbeam frame through support positioning subassembly, and can provide space for the installation of first electrode, and first electrode also serves as the support carrier of welding before installation board, when the second electrode of resistance welding machine and first electrode power on cooperation welding, the mounting plate is welded on the first end inner wall of frame main part's side plate, realizes the automation resistance welding of crossbeam frame.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, and specifically relates to a resistance welding device. Background Technology

[0002] like Figure 1 and Figure 2 The sheet metal part shown is specifically the crossbeam frame 2 of the electric height-adjustable table. The frame body 2.1 of the sheet metal part has a U-shaped cross-section and includes a base plate 2.11 and two side plates 2.12. The bottom edges of the two side plates 2.12 are connected to the base plate 2.11. The top edges of the two side plates 2.12 form outward flanges 2.13 for connecting with the tabletop of the electric height-adjustable table. A mounting plate 2.2 is welded to the inner wall of the first end of each side plate 2.12 by resistance welding for mounting the lifting motor.

[0003] In related technologies, there is currently no corresponding automatic resistance welding equipment for this type of sheet metal parts. The only option is to use a handheld resistance welding machine to weld the mounting plates of the lifting motors on both sides sequentially. This results in unstable welding quality, low production efficiency, and high labor intensity for the operators.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] In response to the problems mentioned in the background art, this utility model proposes a resistance welding equipment that can automatically perform resistance welding on the inner mounting plate of the electric lifting table crossbeam frame, thereby improving welding quality and efficiency and reducing labor intensity.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In some embodiments of this application, a resistance welding apparatus is provided for welding a beam frame, the beam frame including a frame body and a mounting plate, the frame body including a bottom plate and two opposing side plates, the mounting plate being welded to the inner wall of at least one of the side plates at its first end; the resistance welding apparatus includes: A support and positioning assembly is used to support and position the crossbeam frame. The support and positioning assembly is provided with a first electrode, and the first electrode is provided with a movable connection structure for movably connecting the mounting plate before welding. A resistance welding machine, located on the side of the support and positioning assembly, includes a second electrode that cooperates with the first electrode to weld the mounting plate to the inner wall of the first end of the side plate.

[0007] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the support and positioning components can reliably support the beam frame and provide space for the installation of the first electrode. At the same time, the first electrode also serves as a support carrier for the mounting plate before welding. When the second electrode of the resistance welding machine is energized and cooperates with the first electrode for welding, the mounting plate is welded to the inner wall of the first end of the side plate of the frame body, thus realizing the automated resistance welding of the beam frame.

[0008] In some embodiments of this application, the resistance welding machine includes a cylinder and a connecting assembly. The connecting assembly includes a conductive part and a non-conductive part connected as one piece. The non-conductive part is connected to the piston rod output end of the cylinder. The second electrode is disposed on the conductive part, and the conductive part is connected to a power source. The cylinder drives the second electrode to move horizontally and linearly toward the first electrode through the connecting assembly.

[0009] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the second electrode and the conductive part are indirectly connected to the cylinder by a non-conductive part, which prevents the second electrode from conducting electricity to the cylinder part and improves the safety of the resistance welding machine.

[0010] In some embodiments of this application, the resistance welding equipment further includes a double-rail slide table disposed below the cylinder, wherein the cylinder is horizontally slidably disposed on the double-rail slide table, and its sliding direction is parallel to the extension and retraction direction of its piston rod.

[0011] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the initial position of the cylinder can be changed by external force pushing the cylinder to slide, so that cylinders with different strokes can be used in the resistance welding machine, instead of being limited to a fixed stroke, thus improving the flexibility of equipment use.

[0012] In some embodiments of this application, the number of resistance welding machines is two, symmetrically arranged on opposite sides of the support and positioning assembly.

[0013] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: it can achieve resistance welding of an installation plate on the inner wall of the first end of both sides of the frame body of the beam frame.

[0014] In some embodiments of this application, the first electrode is a conductive metal plate, and the movable connection structure is a magnetic attraction element embedded inside the first electrode; the first electrode is provided with a positioning structure for positioning the mounting plate before welding.

[0015] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the magnetic attraction element serves as a movable connection structure between the mounting plate and the first electrode, which is simple in structure and low in cost; the positioning structure enables the mounting plate to be quickly and accurately connected to the first electrode, thereby ensuring the relative positional accuracy between the mounting plate, the first electrode and the second electrode.

[0016] In some embodiments of this application, the support positioning component includes a first end support portion and a second end support portion, which are respectively used to support the first end and the second end of the beam frame. The first end support portion includes a support body, which includes a horizontal portion and a vertical portion. The top surface of the horizontal portion is used to abut against the top edge of the side plate, and the top surface of the vertical portion is used to abut against the bottom plate. The first electrode is disposed on the side surface of the vertical portion.

[0017] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the above support and positioning component has a simple structure and can reliably support the crossbeam frame.

[0018] In some embodiments of this application, the support positioning assembly further includes a support base plate and an electrode motion driving mechanism. The second end support portion is fixedly mounted on the support base plate, and the support body is slidably mounted on the support base plate. The electrode motion driving mechanism is used to drive the support body to slide horizontally and linearly toward the second electrode, so that the first electrode and the second electrode cooperate to press the mounting plate and the side plate.

[0019] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: By setting an electrode movement drive mechanism, the support body can drive the first electrode and the mounting plate to slide towards the side where the second electrode is located, thereby enabling the first electrode and the second electrode to cooperate in pressing the mounting plate and the side plate, and achieving welding when energized; under the action of the electrode movement drive mechanism, the first electrode and the second electrode can effectively press the mounting plate and the side plate, improving the welding reliability; at the same time, after welding is completed, the electrode movement drive mechanism can disengage from the support body, allowing the support body to return to a sliding state, which is also beneficial for removing the welded crossbeam frame.

[0020] In some embodiments of this application, the number of the supporting bodies is two and they are symmetrically arranged, corresponding one-to-one with the two side plates; The electrode motion driving mechanism includes a telescopic driving component and a pressing component connected to the output end of the telescopic driving component. The telescopic driving component drives the pressing component to extend or retract between the vertical parts of the two supporting bodies to squeeze the two supporting bodies to slide in opposite directions. The pressing component is wedge-shaped and has two symmetrically arranged inclined sides. The telescopic direction of the pressing component is perpendicular to the sliding direction of the supporting body.

[0021] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the electrode motion drive mechanism has a simple structure and simple motion action, which helps to reduce equipment costs.

[0022] In some embodiments of this application, the opposite sides of the vertical portions of the two support bodies are inclined surfaces, and are adapted to the two inclined sides of the clamping member.

[0023] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: the inclined plane has good guiding properties, which helps to improve the smoothness of the driving action of the clamping component on the supporting body.

[0024] In some embodiments of this application, the first end support portion further includes a support connecting plate, the support body is fixed on the support connecting plate and separated from the support connecting plate by an insulating component, the support connecting plate is slidably connected to the support base plate; the support body is made of conductive metal material, and its horizontal portion is connected to a power source; the second end support portion is also separated from the support base plate by an insulating component.

[0025] The resistance welding equipment in the above technical solution has the following advantages or beneficial effects: by setting the main support body to a conductive material and connecting its horizontal part to a power source, it is easy to energize the first electrode, and by setting an insulating plate, it can also ensure the safety of the equipment.

[0026] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 An exemplary perspective view of a beam frame according to some embodiments is shown; Figure 2 An exemplary perspective view of the beam frame from another angle is shown in some embodiments; Figure 3 An exemplary schematic diagram of a resistance welding apparatus having a beam frame according to some embodiments is shown; Figure 4 An exemplary schematic diagram of a resistance welding apparatus is shown, with the crossbeam frame omitted according to some embodiments; Figure 5 An exemplary schematic diagram of a resistance welding machine according to some embodiments is shown; Figure 6 An exemplary schematic diagram of a support positioning assembly with a beam frame is shown in some embodiments; Figure 7 An exemplary schematic diagram of the support positioning assembly is shown, with the crossbeam frame omitted according to some embodiments. Figure 8 An exemplary schematic diagram of the support positioning assembly is shown, with the electrode motion drive mechanism omitted according to some embodiments. Figure 9 An exemplary schematic diagram of the assembly structure of the support body, the first electrode, and the mounting plate according to some embodiments is shown; Figure 10 An exemplary schematic diagram of the assembly structure of the fixed base and the linear module is shown according to some embodiments.

[0029] Figure label: 1. Resistance welding equipment; 1000, Support and positioning assembly; 1100, First electrode; 1200, First end support portion; 1210, Support body; 1211, Horizontal portion; 1212, Vertical portion; 1220, Support connecting plate; 1230, Insulating plate; 1240, Limiting component; 1300, Second end support portion; 1400, Support base plate; 1500, Electrode movement drive mechanism; 1510, Telescopic drive component; 1520, Pressing component; 1521, Inclined side; 1600, Fixed base; 1700, Linear module; 1800, Conductive copper sheet; 1900, First double-rail slide table; 2000, Resistance welding machine; 2100, Second electrode; 2200, Cylinder; 2300, Connecting assembly; 2310, Conductive part; 2320, Non-conductive part; 2400, Second double guide rail slide; 2500, Copper sheet; 2. Crossbeam frame; 2.1. Frame body; 2.11. Base plate; 2.12. Side plate; 2.13. Outward flange; 2.2. Mounting plate; 2.21. Positioning holes. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] 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.

[0035] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0036] Reference Figures 3 to 10 In some embodiments of this application, a resistance welding device 1 is used for automatic resistance welding of a beam frame 2.

[0037] The structure of beam frame 2 can be referred to Figure 1 and Figure 2 The crossbeam frame 2 is U-shaped and has a first end and a second end. The crossbeam frame 2 includes a U-shaped frame body 2.1 and a mounting plate 2.2 for mounting the electric lifting table motor. The frame body 2.1 includes a base plate 2.11 and two side plates 2.12 arranged opposite to each other. The base plate 2.11 has a first end and a second end, and the side plates 2.12 also have a first end and a second end. The mounting plate 2.2 is welded to the inner wall of the first end of at least one of the side plates 2.12, and an outward flange 2.13 is formed on the top edge of each side plate 2.12.

[0038] In some embodiments of this application, the resistance welding equipment 1 is specifically used to weld the mounting plate 2.2 to the inner wall of the first end of the side plate 2.12 of the frame body 2.1 by resistance welding.

[0039] In some embodiments of this application, the resistance welding equipment 1 includes a support and positioning assembly 1000, which supports the frame body 2.1 and mounting plate 2.2 of the positioning beam frame 2. The support and positioning assembly 1000 is provided with a first electrode 1100, and the first electrode 1100 is provided with a movable connection structure for movably connecting the mounting plate 2.2 before welding. That is, before welding, the mounting plate 2.2 is movably connected to the first electrode 1100, so that it can be detached from the first electrode 1100 after welding to the inner wall of the first end of the side plate 2.12.

[0040] In some embodiments of this application, the resistance welding equipment 1 includes a resistance welding machine 2000, which is located on the side of the support and positioning assembly 1000 and includes a second electrode 2100. When powered on, the second electrode 2100 cooperates with the first electrode 1100 to weld the mounting plate 2.2 to the inner wall of the first end of the side plate 2.12 by resistance welding.

[0041] In some embodiments of this application, the first electrode 1100 is a conductive metal plate with a magnetic attraction element embedded inside, serving as a movable connection structure for the mounting plate 2.2 before welding. That is, under the magnetic attraction force of the magnetic attraction element, the mounting plate 2.2 before welding is magnetically attracted to the first electrode 1100, which facilitates the separation of the mounting plate 2.2 from the first electrode 1100 after welding.

[0042] The first electrode 1100 is provided with a positioning pin (not shown), and the mounting plate 2.2 has a positioning hole 2.21, such as... Figure 6 and Figure 8 As shown, the positioning pin and positioning hole 2.21 cooperate to position the mounting plate 2.2 when it is magnetically attached to the first electrode 1100, so that the mounting plate 2.2 can be quickly and accurately moved and connected to the first electrode 1100.

[0043] Of course, the mounting plate 2.2 and the first electrode 1100 can also adopt other positioning structures. For example, a positioning groove adapted to the mounting plate 2.2 can be formed on the first electrode 1100. The thickness of the positioning groove is less than the thickness of the mounting plate 2.2. The mounting plate 2.2 is embedded in the positioning groove to achieve positioning. No specific restrictions are imposed here.

[0044] In some embodiments of this application, such as Figures 3 to 5 As shown, the resistance welding machine 2000 includes a cylinder 2200 and a connecting assembly 2300. The connecting assembly 2300 includes a conductive part 2310 and a non-conductive part 2320 connected as one piece. The non-conductive part 2320 is connected to the piston rod output end of the cylinder 2200. The second electrode 2100 is disposed on the conductive part 2310. The conductive part 2310 is also connected to the power supply through a copper sheet 2500, thereby enabling the power supply to supply power to the second electrode 2100.

[0045] During welding, the cylinder 2200 drives the second electrode 2100 to move horizontally and linearly toward the first electrode 1100 through the connecting assembly 2300, so as to cooperate with the first electrode 1100 to clamp the side plate 2.12 and mounting plate 2.2 of the frame body 2.1 to achieve resistance welding of the workpiece. At the same time, after welding, the cylinder 2200 drives the second electrode 2100 away from the first electrode 1100 through the connecting assembly 2300 to release the workpiece for removal.

[0046] The second electrode 2100 and the conductive part 2310 are indirectly connected to the cylinder 2200 by the non-conductive part 2320, which prevents the second electrode 2100 from conducting electricity to the cylinder 2200 and improves the safety of the resistance welding machine 2000.

[0047] In some embodiments of this application, the resistance welding equipment further includes a second double-rail slide 2400 disposed below the cylinder 2200. The cylinder 2200 is horizontally slidably disposed on the second double-rail slide 2400. The second double-rail slide 2400 is configured such that the sliding direction of the cylinder 2200 is parallel to the extension and retraction direction of its piston rod. Thus, the initial position of the cylinder 2200 can be changed by pushing it to slide with external force, so that cylinders 2200 with different strokes can be used in the resistance welding machine 2000, rather than being limited to a cylinder 2200 with a fixed stroke, thereby improving the flexibility of equipment use.

[0048] In some embodiments of this application, an mounting plate 2.2 is welded to the inner wall of the first end of the two side plates 2.12 of the crossbeam frame 2, and the resistance welding machine 2000 is corresponding to two sets, symmetrically arranged on opposite sides of the support and positioning assembly.

[0049] In some embodiments of this application, such as Figure 3 , Figure 4 , Figures 6 to 9 As shown, the support positioning component 1000 includes a first end support portion 1200 and a second end support portion 1300, which are used to support the first end and the second end of the beam frame 2, respectively, specifically supporting the first end and the second end of the frame body 2.1.

[0050] The first end support portion 1200 includes a support body 1210, which includes a horizontal portion 1211 and a vertical portion 1212, making the support body 1210 generally L-shaped or inverted T-shaped. The first electrode 1100 is disposed on the side of the vertical portion 1212, and can be fixed to the vertical portion 1212 by welding or screw fastening. Before welding, the mounting plate 2.2 is movably connected to the outer vertical surface of the first electrode 1100.

[0051] The frame body 2.1 is inverted (i.e., the opening faces downward) and supported on the support positioning component 1000. The top surface of the horizontal part 1211 is in contact with the outer flange 2.13 of the frame body 2.1, and the top surface of the vertical part 1212 is in contact with the bottom plate 2.11 of the frame body 2.1. The mounting plate 2.2, which is movably connected to the first electrode 1100 before welding, abuts against the side plate 2.12.

[0052] Similarly, the second end support portion 1300 also includes a horizontal portion and a vertical portion, and its overall shape is L-shaped or inverted T-shaped to accommodate the inverted crossbeam frame 2.

[0053] To facilitate the placement of the frame body 2.1 of the crossbeam frame 2 on the support and positioning assembly 1000 before welding, in the horizontal direction, the mounting plate 2.2, which is pre-movably connected to the first electrode 1100, should preferably have a certain gap with the side plate 2.12 of the frame body 2.1 to avoid the frame body 2.1 being in too tight contact with the mounting plate 2.2, making placement difficult; however, during welding, the mounting plate 2.2 needs to be in close contact with the side plate 2.12. To meet the above requirements, in some embodiments of this application, such as... Figure 3 , Figure 4 , Figures 6 to 8 As shown, the support positioning assembly 1000 also includes a support base plate 1400 and an electrode motion drive mechanism 1500. The second end support portion 1300 is fixed on the support base plate 1400, while the support body 1210 of the first end support portion 1200 is slidably disposed on the support base plate 1400.

[0054] When placing the frame body 2.1, the support body 1210 can slide to make the mounting plate 2.2 and the side plate 2.12 of the frame body 2.1 move away from each other by a certain gap, so as to facilitate the placement of the frame body 2.1. After the frame body 2.1 is placed in place, the electrode motion drive mechanism 1500 drives the support body 1210 to slide horizontally and linearly toward the side plate 2.12 and the second electrode 2100, so that the mounting plate 2.2 abuts against the side plate 2.1. The first electrode 1100 and the second electrode 2100 cooperate to press the mounting plate 2.2 and the side plate 2.12. When the first electrode 1100 and the second electrode 2100 are energized, the mounting plate 2.2 is welded to the side plate 2.12.

[0055] When two sets of resistance welding machines 2000 are symmetrically arranged, with a mounting plate 2.2 welded to the inner wall of the first end of the two side plates 2.12 of the frame body 2.1, correspondingly, there are two support bodies 1210, symmetrically arranged, corresponding one-to-one with the two side plates 2.12; each support body 1210 is L-shaped, the vertical parts 1212 of the two support bodies 1210 are opposite each other and each is provided with a first electrode 1100, and the horizontal parts 1211 of the two support bodies 1210 are opposite to each other, such as Figure 3 , Figure 4 , Figures 6 to 8 As shown.

[0056] The electrode motion drive mechanism 1500 includes a telescopic drive component 1510 and a pressing component 1520 connected to the output end of the telescopic drive component 1510. The telescopic drive component 1510 drives the pressing component 1520 to extend or retract between the two vertical parts 1212 of the two support bodies 1210 to squeeze the two support bodies 1210 to slide in opposite directions, thereby causing their respective first electrodes 1100 and mounting plates 2.2 to abut against the corresponding side plates 2.12.

[0057] In some embodiments of this application, as the telescopic drive component 1510 drives the pressing component 1520 to extend between the two vertical portions 1212 of the two support bodies 1210, the pressing component 1520 contacts the two support bodies 1210 to compress the two support bodies 1210 to slide in opposite directions; and when the telescopic drive component 1510 drives the pressing component 1520 to retract between the two vertical portions 1212 of the two support bodies 1210, it gradually releases the two support bodies 1210, so that the support bodies 1210 return to a freely sliding state.

[0058] An elastic reset component can be provided between the two support bodies 1210 to facilitate the automatic reset of the support body 1210 when the clamping component 1520 retracts after welding, so that the vertical part 1212 of the support body 1210 drives the first electrode 1100 to reset, so as to facilitate the removal of the part.

[0059] The clamping member 1520 can be conical or wedge-shaped to facilitate insertion between the vertical portions 1212 of the two support bodies 1210. The telescopic drive member 1510 drives the clamping member 1520 to extend or retract in a direction perpendicular to the sliding direction of the support body 1210. For example, if the support body 1210 slides horizontally in the lateral direction, the clamping member 1520 extends or retracts horizontally in the longitudinal direction.

[0060] In some embodiments of this application, the pressing component 1520 is specifically an elongated wedge-shaped block with its tip close to the support body 1210 and having two symmetrically arranged inclined sides 1521. Correspondingly, the opposite sides of the two vertical portions 1212 of the two support bodies 1210 are also inclined surfaces, and are adapted and fitted to the two inclined sides 1521 of the pressing component 1520 to improve the smoothness of the driving action of the pressing component 1520 on the support body 1210.

[0061] In some embodiments of this application, such as Figure 3 , Figure 4 , Figures 6 to 8 as well as Figure 10 As shown, the support positioning assembly 1000 also includes a fixed base 1600 and a linear module 1700. The fixed base 1600 is located below the support base plate 1400, and the linear module 1700 is located between the fixed base 1600 and the support base plate 1400. It is used to drive the support base plate 1400 to move horizontally in a linear direction. The direction of movement of the support base plate 1400 is perpendicular to the sliding direction of the support body 1210.

[0062] The linear module 1700 drives the support base plate 1400 to move horizontally in a direction perpendicular to the sliding direction of the support body 1210, so that the crossbeam frame 2 can move and adjust its position in multiple horizontal directions, thereby improving the accuracy and reliability of workpiece positioning.

[0063] To facilitate the energization of the first electrode 1100, in some embodiments of this application, the support body 1210 is made of conductive metal, and its horizontal part 1211 is connected to the power supply. Since the first electrode 1100 is located on the vertical part 1212 of the support body 1210, the first electrode 1100 is connected to the power supply through the conductive support body 1210. Specifically, the power supply can be connected by connecting the conductive copper sheet 1800.

[0064] Accordingly, to ensure safe use, the first end support portion 1200 also includes a support connecting plate 1220. The support body 1210 can be welded and fixed on the support connecting plate 1220, and is separated from the support connecting plate 1220 by an insulating plate 1230. The support connecting plate 1220 is slidably connected to the support base plate 1400, thereby realizing the slidable connection between the support body 1210 and the support base plate 1400. The second end support portion 1300 is also separated from the support base plate 1400 by an insulating plate 1230.

[0065] In some embodiments of this application, a first double-rail slide 1900 is provided on the support base plate 1400, and the support connecting plate 1220 is connected to the slider of the first double-rail slide 1900, thereby realizing the sliding connection between the support connecting plate 1220 and the support base plate 1400.

[0066] The support base plate 1400 is also provided with two limiting components 1240 located outside the two support bodies 1210. When the support body 1210 slides horizontally and linearly toward the second electrode 2100 under the drive of the electrode movement drive mechanism 1500, the outer side of the horizontal part 1211 of the support body 1210 abuts against the limiting component 1240, which plays an auxiliary positioning role for the support body 1210. Combined with the squeezing and pressing action of the pressing component 1520, the support body 1210 is stably kept in the sliding position, which improves the support and positioning effect of the crossbeam frame 2, and thus helps to improve the reliability of resistance welding.

[0067] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0068] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A resistance welding device for welding a beam frame, the beam frame comprising a frame body and a mounting plate, the frame body comprising a bottom plate and two opposing side plates, wherein the mounting plate is welded to the inner wall of at least one of the side plates at its first end; characterized in that, The resistance welding equipment includes: A support and positioning assembly is used to support and position the crossbeam frame. The support and positioning assembly is provided with a first electrode, and the first electrode is provided with a movable connection structure for movably connecting the mounting plate before welding. A resistance welding machine, located on the side of the support and positioning assembly, includes a second electrode that cooperates with the first electrode to weld the mounting plate to the inner wall of the first end of the side plate.

2. The resistance welding equipment according to claim 1, characterized in that, The resistance welding machine includes a cylinder and a connecting assembly. The connecting assembly includes a conductive part and a non-conductive part connected as one piece. The non-conductive part is connected to the piston rod output end of the cylinder. The second electrode is disposed on the conductive part, and the conductive part is connected to a power source. The cylinder drives the second electrode to move horizontally and linearly toward the first electrode through the connecting assembly.

3. The resistance welding equipment according to claim 2, characterized in that, The resistance welding equipment also includes a double-rail slide table located below the cylinder. The cylinder is horizontally slidable on the double-rail slide table, and its sliding direction is parallel to the extension and retraction direction of its piston rod.

4. The resistance welding equipment according to claim 1, characterized in that, The resistance welding machine is in the form of two sets, symmetrically arranged on opposite sides of the support and positioning assembly.

5. The resistance welding equipment according to claim 1, characterized in that, The first electrode is a conductive metal plate, and the movable connection structure is a magnetic attraction element embedded inside the first electrode; the first electrode is provided with a positioning structure for positioning the mounting plate before welding.

6. The resistance welding equipment according to claim 1, characterized in that, The support and positioning assembly includes a first end support portion and a second end support portion, which are used to support the first end and the second end of the beam frame, respectively. The first end support portion includes a support body, which includes a horizontal portion and a vertical portion. The top surface of the horizontal portion is used to abut against the top edge of the side plate, and the top surface of the vertical portion is used to abut against the bottom plate. The first electrode is disposed on the side of the vertical portion.

7. The resistance welding equipment according to claim 6, characterized in that, The support positioning assembly further includes a support base plate and an electrode motion drive mechanism, the second end support portion is fixedly mounted on the support base plate, and the support body is slidably mounted on the support base plate; The electrode motion drive mechanism is used to drive the support body to slide horizontally in a straight line toward the second electrode, so that the first electrode and the second electrode cooperate to press the mounting plate and the side plate.

8. The resistance welding equipment according to claim 7, characterized in that, The number of the supporting main bodies is two and they are symmetrically arranged, corresponding one-to-one with the two side plates; The electrode motion driving mechanism includes a telescopic driving component and a pressing component connected to the output end of the telescopic driving component. The telescopic driving component drives the pressing component to extend or retract between the vertical parts of the two supporting bodies to squeeze the two supporting bodies to slide in opposite directions. The pressing component is wedge-shaped and has two symmetrically arranged inclined sides. The telescopic direction of the pressing component is perpendicular to the sliding direction of the supporting body.

9. The resistance welding equipment according to claim 8, characterized in that, The opposite sides of the vertical portions of the two supporting bodies are inclined surfaces, and are adapted to the two inclined sides of the clamping component.

10. The resistance welding equipment according to claim 7, characterized in that, The first end support portion further includes a support connecting plate, the support body is fixed on the support connecting plate and separated from the support connecting plate by an insulating component, the support connecting plate is slidably connected to the support base plate; the support body is made of conductive metal material, and its horizontal portion is connected to a power source; the second end support portion is also separated from the support base plate by an insulating component.

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