A workpiece resistance welding positioning device

Abstract

This utility model discloses a workpiece resistance welding positioning device, including a first end support portion, a second end support portion, and two electrodes. The first end support portion supports the first end of the frame body and includes two support bodies, each with a horizontal and a vertical portion. The top surface of the horizontal portion is used to abut against the top surface of the side plate, and the top surface of the vertical portion is used to abut against the bottom plate. The second end support portion supports the second end of the frame body. The two electrodes are respectively disposed on the sides of the vertical portions of the two support bodies, and the electrodes are provided with movable connecting structures for movably connecting a mounting plate before welding. This workpiece resistance welding positioning device can not only support and position the frame body, but also provide space and a carrier for setting the electrodes and the mounting plate before welding. It can smoothly achieve resistance welding when used with electrodes on an external resistance welding machine, which is beneficial to improving the welding quality and efficiency of resistance welding.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and specifically relates to a workpiece welding positioning device for positioning workpieces during resistance welding. 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 each form an outward flange 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] To ensure welding quality, the workpiece needs to be positioned during welding to maintain its stable position. Since the two electrodes need to clamp the mounting plate and the side plate of the frame body during resistance welding, and the frame body has a U-shaped cross-section, with the mounting plate welded to the inner wall of the side plate, one electrode needs to be located on the outside of the side plate, and the other electrode on the inside of the frame body and the inside of the side plate. Therefore, the workpiece positioning device should ensure reliable workpiece positioning while also allowing for the proper installation and setting of the electrode on the inside of the side plate, ensuring smooth resistance welding.

[0004] In related technologies, the positioning device for the workpiece during welding is usually a simple positioning boss structure. There is no corresponding resistance welding positioning device that can meet the resistance welding positioning design requirements of the above-mentioned sheet metal parts. There is a lot of room for improvement in the existing workpiece positioning devices.

[0005] 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

[0006] In response to the problems pointed out in the background art, this utility model proposes a workpiece resistance welding positioning device, which can not only ensure reliable positioning of the workpiece, but also meet the installation requirements of the electrodes for resistance welding, thus improving the welding quality and efficiency of resistance welding.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In some embodiments of this application, a workpiece resistance welding positioning device is provided for positioning a workpiece during resistance welding. The workpiece includes a frame body and a mounting plate. The frame body includes a bottom plate and two opposing side plates. The mounting plate is welded to the inner wall of the first end of each of the two side plates. The workpiece resistance welding positioning device includes: The first end support portion is used to support the first end of the frame body inside the frame body. The first end support portion includes two support bodies corresponding to the two side plates one by one. The support body includes a horizontal part and a vertical part. The top surface of the horizontal part is used to fit against the top surface of the side plate, and the top surface of the vertical part is used to fit against the bottom plate. The second end support portion is used to support the second end of the frame body inside the frame body; Two electrodes are respectively disposed on the vertical side of the two supporting bodies. The electrodes are provided with a movable connection structure for movably connecting the mounting plate before welding.

[0008] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: The first end support part includes two support bodies corresponding one-to-one with the two side plates. Each support body has its horizontal top surface abutting against the top surface of the side plate of the frame body, and its vertical top surface abutting against the bottom plate of the frame body, thereby achieving reliable support and positioning of the first end of the frame body. The second end support part supports and positions the second end of the frame body. At the same time, the electrode is set on the vertical part of the support body of the first end support part, and the pre-welding mounting plate is movably connected to the electrode. Thus, the workpiece resistance welding positioning device in the above technical solution can not only achieve support and positioning of the frame body inside the frame body, but also provide space and carrier for the setting of the electrode and the pre-welding mounting plate. It can smoothly achieve resistance welding when cooperated with the electrode on the external resistance welding machine, which is conducive to improving the welding quality and efficiency of resistance welding.

[0009] In some embodiments of this application, the workpiece resistance welding positioning device further includes a support base plate and an electrode movement 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 movement driving mechanism is used to drive the two support bodies to slide back to back, so that the electrode drives the mounting plate to press against the corresponding side plate.

[0010] The workpiece resistance welding positioning device 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 electrode and mounting plate to slide towards the side plate of the frame body, thereby enabling the electrode to press against the mounting plate and side plate, and cooperate with the electrode on the resistance welding machine to achieve welding when energized; 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.

[0011] In some embodiments of this application, 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 portions of the two support bodies to compress the two support bodies to slide in opposite directions. The pressing component is conical or wedge-shaped, and its telescopic direction is perpendicular to the sliding direction of the support body.

[0012] The workpiece resistance welding positioning device 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.

[0013] In some embodiments of this application, the clamping member is wedge-shaped and has two symmetrically arranged inclined sides, and the opposite sides of the vertical portions of the two support bodies correspond to inclined surfaces adapted to the two inclined sides.

[0014] The workpiece resistance welding positioning device 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.

[0015] In some embodiments of this application, the workpiece resistance welding positioning device further includes a fixed base and a linear module. The fixed base is disposed below the support base plate, and the linear module is disposed between the fixed base and the support base plate for driving the support base plate to move horizontally in a linear direction. The direction of movement of the support base plate is perpendicular to the sliding direction of the support body.

[0016] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: by driving the support base plate to move horizontally in a direction perpendicular to the sliding direction of the support body through the linear module, the frame body can move and adjust its position in multiple horizontal directions, thereby improving the positioning accuracy and reliability.

[0017] 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.

[0018] The workpiece resistance welding positioning device 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 convenient to energize the electrodes, and by setting an insulating plate, it can also ensure safe use.

[0019] In some embodiments of this application, the supporting base plate is provided with a double guide rail slide, and the supporting connecting plate is slidably connected to the supporting base plate through the double guide rail slide.

[0020] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: it can realize the smooth and reliable sliding of the support connecting plate to drive the support body.

[0021] In some embodiments of this application, the support base plate is further provided with two limiting components located on the outer sides of the two support bodies, which are used to assist in positioning the support bodies when they slide into place.

[0022] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: the limiting component plays an auxiliary positioning role for the supporting body, and combined with the squeezing and pressing action of the pressing component, it keeps the supporting body stably in the sliding position, thereby improving the supporting and positioning effect of the frame body.

[0023] In some embodiments of this application, the electrode is a conductive metal plate, and the movable connection structure is a magnetic element embedded inside the electrode.

[0024] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: the magnetic element serves as a movable connection structure between the mounting plate and the electrode, which is simple in structure and low in cost.

[0025] In some embodiments of this application, the electrode is provided with a positioning structure for positioning the mounting plate before welding.

[0026] The workpiece resistance welding positioning device in the above technical solution has the following advantages or beneficial effects: the positioning structure can enable the mounting plate to be quickly and accurately connected to the electrode.

[0027] 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

[0028] 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.

[0029] Figure 1 An exemplary perspective view of a beam frame according to some embodiments is shown; Figure 2An exemplary perspective view of the beam frame from another angle is shown in some embodiments; Figure 3 An exemplary schematic diagram of a workpiece resistance welding positioning device with a crossbeam frame is shown in some embodiments; Figure 4 An exemplary schematic diagram of the workpiece resistance welding positioning device is shown, with the crossbeam frame omitted according to some embodiments. Figure 5 An exemplary schematic diagram of the workpiece resistance welding positioning device is shown, with the electrode motion drive mechanism omitted according to some embodiments. Figure 6 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 7 An exemplary schematic diagram of the assembly structure of the fixed base and the linear module is shown in some embodiments; Figure 8 An exemplary schematic diagram illustrates the overall structure of a resistance welding device consisting of a workpiece resistance welding positioning device and a resistance welding mechanism, which is provided with a crossbeam frame according to some embodiments. Figure 9 An exemplary schematic diagram of the overall structure of a resistance welding equipment consisting of a workpiece resistance welding positioning device and a resistance welding mechanism, with the crossbeam frame omitted according to some embodiments; Figure 10 An exemplary schematic diagram of a resistance welding machine according to some embodiments is shown.

[0030] Figure label: 1. Resistance welding equipment; 1000, Workpiece resistance welding positioning device; 1100, First electrode; 1200, First end support portion; 1210, Support body; 1211, Horizontal part; 1212, Vertical part; 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, Clamping component; 1521, Inclined side; 1600, Fixed base; 1700, Linear module; 1800, Conductive copper sheet; 1900, First double guide rail slide; 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

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Reference Figures 3 to 7 In some embodiments of this application, a workpiece resistance welding positioning device 1000 is used to position the workpiece during resistance welding.

[0038] The workpiece is the crossbeam frame 2 of the electric lifting table. The structure of the crossbeam frame 2 is described below. 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 oppositely arranged side plates 2.12. 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 each of the two side plates 2.12 by resistance welding. The top edge of each side plate 2.12 forms an outward flange 2.13.

[0039] Reference Figures 8 to 10 In some embodiments of this application, a resistance welding machine 2000 is also provided, which is used in conjunction with the workpiece resistance welding positioning device 1000 to form a resistance welding equipment 1 for resistance welding of the aforementioned crossbeam frame 2. Two sets of resistance welding machines 2000 are provided, symmetrically arranged on both sides outside the workpiece resistance welding positioning device 1000.

[0040] In some embodiments of this application, such as Figures 3 to 7 As shown, the workpiece resistance welding positioning device 1000 includes a first end support portion 1200, a second end support portion 1300, and two electrodes. The frame body 2.1 is inverted (i.e., the opening faces downward) and supported on the workpiece resistance welding positioning device 1000. For ease of distinction, the electrode of the workpiece resistance welding positioning device 1000 is called the first electrode 1100, and the electrode on the resistance welding machine 2000 is called the second electrode 2100. In the energized state, the second electrode 2100 cooperates with the first electrode 1100 to weld the two mounting plates 2.2 to the inner walls of the first ends of the two side plates 2.12 by resistance welding.

[0041] The first end support portion 1200 is used to support the first end of the frame body 2.1 inside the frame body 2.1. The first end support portion 1200 includes two support bodies 1210, which are correspondingly arranged with the two side plates 2.12 of the frame body 2.1. Each support body 1210 includes a horizontal part 1211 and a vertical part 1212, so that the support body 1210 is generally L-shaped or inverted T-shaped. The horizontal parts 1211 of the two support bodies 1210 are opposite to each other. The top surface of the horizontal part 1211 is used to fit and abut against the top surface of the side plate 2.12 of the frame body 2.1, and the top surface of the vertical part 1212 is used to fit and abut against the bottom plate 2.11 of the frame body 2.1.

[0042] The second end support portion 1300 is used to support the second end of the frame body 2.1 inside the frame body 2.1. 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 frame body 2.1.

[0043] Two first electrodes 1100 are respectively disposed on the side of the vertical part 1212 of the two supporting bodies 1210. 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.

[0044] 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.

[0045] 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 4 and Figure 6 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.

[0046] 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.

[0047] To facilitate the placement of the frame body 2.1 of the crossbeam frame 2 on the workpiece resistance welding positioning device 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... Figures 3 to 5 , Figure 8 and Figure 9 As shown, the workpiece resistance welding positioning device 1000 also includes a support base plate 1400 and an electrode movement 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.

[0048] When placing the frame body 2.1, the two supporting bodies 1210 can slide towards each other to move the mounting plates 2.2 away from the corresponding side plates 2.12 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 supporting 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] In some embodiments of this application, such as Figures 3 to 5 , Figures 7 to 9 As shown, the workpiece resistance welding positioning device 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.

[0055] 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.

[0056] To facilitate energizing the first electrode 1100, in some embodiments of this application, the support body 1210 is made of conductive metal, with its horizontal portion 1211 connected to a power source. Since the first electrode 1100 is located on the vertical portion 1212 of the support body 1210, the first electrode 1100 is connected to the power source through the conductive support body 1210. Specifically, this connection can be achieved by connecting a conductive copper sheet 1800. Correspondingly, 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 to 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 achieving a slidable connection between the support body 1210 and the support base plate 1400. An insulating plate 1230 is also provided between the second end support portion 1300 and the support base plate 1400.

[0057] 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.

[0058] 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.

[0059] Reference Figures 8 to 10 In some embodiments of this application, 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 a power source through a copper sheet 2500, thereby enabling the power source to supply power to the second electrode 2100.

[0060] 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.

[0061] 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.

[0062] In some embodiments of this application, the resistance welding machine 2000 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.

[0063] 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.

[0064] 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 workpiece resistance welding positioning device for positioning a workpiece during resistance welding, the workpiece 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 the first end of each of the two side plates; characterized in that, The workpiece resistance welding positioning device includes: The first end support portion is used to support the first end of the frame body inside the frame body; the first end support portion includes two support bodies corresponding to the two side plates one by one, the support body includes a horizontal part and a vertical part, the top surface of the horizontal part is used to fit against the top surface of the side plate, and the top surface of the vertical part is used to fit against the bottom plate. The second end support portion is used to support the second end of the frame body inside the frame body; Two electrodes are respectively disposed on the vertical side of the two supporting bodies. The electrodes are provided with a movable connection structure for movably connecting the mounting plate before welding.

2. The workpiece resistance welding positioning device according to claim 1, characterized in that, The workpiece resistance welding positioning device also includes a support base plate and an electrode movement driving mechanism. The second end support portion is fixed on the support base plate, and the support body is slidably disposed on the support base plate. The electrode motion drive mechanism is used to drive the two support bodies to slide back to back, so that the electrode drives the mounting plate to press against the corresponding side plate.

3. The workpiece resistance welding positioning device according to claim 2, characterized in that, 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 compress the two supporting bodies to slide in opposite directions. The pressing component is conical or wedge-shaped, and its extension and retraction direction is perpendicular to the sliding direction of the supporting body.

4. The workpiece resistance welding positioning device according to claim 3, characterized in that, The clamping component is wedge-shaped and has two symmetrically arranged inclined sides. The opposite sides of the vertical parts of the two supporting bodies correspond to inclined surfaces adapted to the two inclined sides.

5. The workpiece resistance welding positioning device according to claim 3, characterized in that, The workpiece resistance welding positioning device further includes a fixed base and a linear module. The fixed base is located below the support base plate, and the linear module is located between the fixed base and the support base plate. It is used to drive the support base plate to move horizontally in a linear direction. The direction of movement of the support base plate is perpendicular to the sliding direction of the support body.

6. The workpiece resistance welding positioning device according to claim 3, 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.

7. The workpiece resistance welding positioning device according to claim 6, characterized in that, The supporting base plate is provided with a double guide rail slide, and the supporting connecting plate is slidably connected to the supporting base plate through the double guide rail slide.

8. The workpiece resistance welding positioning device according to claim 2, characterized in that, The support base plate is also provided with two limiting components located on the outside of the two support bodies, which are used to assist in positioning the support bodies when they slide into place.

9. The workpiece resistance welding positioning device according to claim 1, characterized in that, The electrode is a conductive metal plate, and the movable connection structure is a magnetic attraction element embedded inside the electrode.

10. The workpiece resistance welding positioning device according to claim 1, characterized in that, The electrode is provided with a positioning structure for positioning the mounting plate before welding.

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