Electrode dressing device and electrode dressing system

Abstract

The utility model relates to the technical field of automobile parts production, more particularly to an electrode dressing device and electrode dressing system, which comprises: a mechanical hand; a gun changing disc, one end of the mechanical hand is connected with one end of the gun changing disc; a telescopic mechanism, one end of the telescopic mechanism is connected with the other end of the gun changing disc; a connecting frame, the other end of the telescopic mechanism is connected with the connecting frame; a dressing mechanism, the dressing mechanism is installed on the connecting frame, the dressing mechanism comprises a dresser, and a dressing opening for dressing the electrode is arranged on the dresser. The electrode can be dressed instead of manually, the error of manual dressing is reduced, the dressing accuracy is improved, and the flatness of the electrode surface after dressing is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and more specifically, to an electrode grinding device and an electrode grinding system. Background Technology

[0002] In the automotive manufacturing industry, welding is a crucial process for ensuring the strength of component connections and product quality. As a core component of welding equipment, the surface condition of the welding torch electrode directly affects welding quality and efficiency. With the rapid development of the automotive industry, production lines are demanding increasingly higher precision and efficiency in welding processes, making the maintenance of the welding torch electrode an indispensable part of the production process. Over long-term use, the surface of the welding torch electrode can experience wear, oxidation, and deformation due to factors such as high temperature, high pressure, and mechanical friction, leading to a decline in welding quality. Traditional electrode regrinding relies primarily on manual operation, with operators using sandpaper or abrasives to manually grind the electrode surface. This method is not only inefficient but also makes it difficult to guarantee grinding precision, easily resulting in uneven electrode surfaces or excessive wear. Utility Model Content

[0003] The purpose of this invention is to provide an electrode grinding device that can replace manual electrode grinding, reduce errors in manual grinding, improve grinding accuracy, and improve the flatness of the electrode surface after grinding.

[0004] Another objective of this invention is to provide an electrode grinding system that can replace manual electrode grinding, reduce errors in manual grinding, improve grinding accuracy, and improve the surface flatness of the ground electrode.

[0005] The technical solution of this utility model is implemented as follows: An electrode grinding device, comprising: robotic arm; A gun-changing disc, wherein the end effector of the robotic arm is connected to one end of the gun-changing disc; A telescopic mechanism, one end of which is connected to the other end of the gun-changing disc; A connecting frame, with the other end of the telescopic mechanism connected to the connecting frame; A grinding mechanism is mounted on the connecting frame. The grinding mechanism includes a grinding tool with a grinding port for grinding the electrode.

[0006] Furthermore, it also includes a dust collection mechanism, wherein a dust removal channel is opened on the side wall of the grinding port, and the suction port of the dust collection mechanism is connected to the dust removal channel.

[0007] Furthermore, the dust collection mechanism includes a negative pressure unit and a dust collection pipe, and the suction port of the negative pressure unit is connected to the dust removal channel through the dust collection pipe.

[0008] Furthermore, the vacuuming mechanism also includes a debris collection box, and the outlet of the negative pressure unit leads to the debris collection box.

[0009] Furthermore, the telescopic mechanism includes a first drive motor and a three-stage telescopic screw structure. The first drive motor is mounted on the gun changing disc, and the output end of the first drive motor is connected to one end of the three-stage telescopic screw structure. The first drive motor is used to drive the three-stage telescopic screw structure to extend and retract. The other end of the three-stage telescopic screw structure is connected to the connecting frame.

[0010] Furthermore, it also includes a buffer assembly, which includes a fixing block and an elastic element. The fixing block is respectively disposed above and below the grinder, and the fixing block is fixedly disposed on the connecting frame. The upper and lower fixing blocks are respectively connected to the grinder by the elastic element.

[0011] Furthermore, the buffer assembly also includes a mounting rod, the grinder has a through hole in the vertical direction, the mounting rod is inserted into the through hole and fixedly connected to the grinder, the fixing block has a through movable hole in the vertical direction, and the upper and lower parts of the mounting rod are slidably installed in the movable holes of the upper and lower fixing blocks respectively; The elastic element is a spring, and the upper and lower springs are respectively sleeved on the outside of the mounting rod.

[0012] Furthermore, two buffer components are provided, and they are respectively located on the left and right sides of the grinder.

[0013] Furthermore, it also includes a power control interface, which is electrically connected to the gun-changing disc.

[0014] An electrode grinding system includes multiple welding torches, each welding torch including a fixed welding frame and welding clamps mounted on the welding frame. The welding clamps have an electrode cap and an electrode at their end. The system also includes the electrode grinding device used to grind the electrodes.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This application provides an electrode grinding device, comprising a robotic arm, a gun-changing disc, a telescopic mechanism, a connecting frame, and a grinding mechanism. The robotic arm and telescopic mechanism work together to move the grinding mechanism to the electrode to be ground, allowing for precise grinding through the grinding port on the grinder. This replaces manual grinding, reducing errors. The telescopic mechanism also compensates for the grinding position, improving the feasibility of the grinding process. Furthermore, the robotic arm drives the grinding mechanism to move towards multiple welding guns, enabling continuous grinding of electrodes from multiple welding guns and improving grinding efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the electrode grinding device of this utility model and its continuous grinding of multiple welding torches. Figure 2 This utility model Figure 1 A schematic diagram of the electrode grinding device at point A. Figure 3 This is a front view of the electrode grinding device of this utility model (the grinding mechanism is located at the front end). Figure 4 This is a schematic diagram of the telescopic mechanism of the electrode grinding device of this utility model in the retracted state. Figure 5 This is a schematic diagram of the telescopic mechanism of the electrode grinding device of this utility model in the extended state.

[0018] In the picture: 1-Robotic arm; 2-Welding torch number one; 3-Welding torch number two; 4-Welding torch number three; 41-Welding frame; 42-Welding clamp; 43-Electrode; 5-Gun changing disc; 6-First drive motor; 7-Three-stage telescopic screw structure; 8-Connector; 81-Circular perforation; 9-Grinding mechanism; 90-Grinding tool; 91-Grinding port; 92-Dust suction pipe; 93-Scrap collection box; 94-Fixing block; 95-Mounting rod; 96-Spring; 10 - Power control interface. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of 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.

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] Example 1 Reference Figures 1-5 This embodiment provides an electrode grinding device for grinding the electrode 43 on a welding torch, replacing manual grinding, and includes: The robotic arm, which can be a three-axis, four-axis, five-axis or six-axis robotic arm, is responsible for moving the grinding mechanism 9 to the position of the electrode 43 that needs to be ground (i.e. the grinding area). The gun changing plate 5 is connected to one end of the end robotic arm 1 of the robotic arm. The gun changing plate 5 is used to establish the connection between the telescopic mechanism and the robotic arm, and plays a transition and conversion role. A telescopic mechanism, one end of which is connected to the other end of the gun-changing disc 5; Connecting frame 8, the other end of the telescopic mechanism is connected to the connecting frame 8; The grinding mechanism 9 is mounted on the connecting frame 8. The grinding mechanism 9 includes a grinding tool 90, which is provided with a grinding port 91 for grinding the electrode 43.

[0027] In addition, during the grinding process of electrode 43, metal shavings and dust generated at the grinding port 91 will fly everywhere, which will not only pollute the working environment, but may also damage the grinding equipment and affect its normal operation.

[0028] To address the issue of flying debris, the electrode grinding device also includes a dust collection mechanism. A dust removal channel is provided on the side wall of the grinding port 91, and the suction port of the dust collection mechanism is connected to the dust removal channel to collect the debris generated during grinding at the grinding port 91.

[0029] Specifically, the dust collection mechanism includes a negative pressure unit and a suction pipe 92. The negative pressure unit is existing technology and will not be described in detail (for example, a vacuum pump can be used as the negative pressure unit). The suction port of the negative pressure unit is connected to the dust removal channel through the suction pipe 92.

[0030] The vacuuming mechanism also includes a debris collection box 93, the outlet of which leads to the debris collection box 93. The debris sucked up by the negative pressure unit is directly collected in the debris collection box 93. The vacuuming mechanism effectively prevents debris from splashing during the grinding of the electrode 43, protecting the working environment.

[0031] It should be noted that the welding torch electrode 43 is a very important component in the welding process, especially in resistance welding (such as spot welding and seam welding).

[0032] The welding torch electrode 43 is a part of the welding torch and is typically a small metal component made of a material with good electrical conductivity (such as copper alloy or chromium zirconium copper). Its main function is to conduct current to the workpieces being welded during the welding process, and the heat generated by the current melts the metal workpieces and joins them together.

[0033] Function of welding torch electrode 43: 1. Current conduction: Electrode 43 transmits a large current to the workpiece, generating high temperature to melt the metal.

[0034] 2. Pressure application: During welding, electrode 43 also applies pressure to help the molten metal bond tightly together.

[0035] 3. Positioning and clamping: Electrode 43 can also help fix the position of the workpiece to ensure the accuracy of the welding point.

[0036] Because the welding torch electrode 43 is repeatedly exposed to high temperature and high pressure environments during welding, its surface is prone to wear, deformation, or oxidation. These problems can lead to a decline in welding quality, such as weak welds or welding failure. To ensure welding quality, the welding torch electrode 43 needs to be regularly refurbished or replaced. Traditional refurbishment methods are usually manual, which is inefficient and difficult to guarantee accuracy. Therefore, this application designs an electrode refurbishment device to improve automation, effectively increasing refurbishment efficiency and accuracy while reducing the labor intensity of workers. The welding torch electrode 43 is a key component in the welding process, and its condition directly affects the welding quality. This solution, by using a highly efficient electrode refurbishment device, can extend the service life of the electrode 43 and improve welding efficiency and product quality.

[0037] In this embodiment: the telescopic mechanism includes a first drive motor 6 and a three-stage telescopic screw structure 7. The first drive motor 6 is mounted on the gun changing plate 5. The output end of the first drive motor 6 is connected to one end of the three-stage telescopic screw structure 7. The first drive motor 6 is used to drive the three-stage telescopic screw structure 7 to telescopically extend and retract. The other end of the three-stage telescopic screw structure 7 is connected to the connecting frame 8.

[0038] The first drive motor 6 drives the extension and retraction of the three-stage telescopic screw structure 7, which can precisely adjust the extension and retraction length and compensate for the grinding position. With the cooperation of the robotic arm, the electrodes 43 of multiple welding guns can be ground continuously.

[0039] It should be noted that the tool changer 5 of the robotic arm is a flexible connection device installed at the end of an industrial robot, used to quickly switch between different tools or actuators, improving the efficiency and flexibility of automated production. The tool changer 5 consists of two parts: a main plate (R side) and a tool plate (T side). The main plate is fixed to the end of the robot, and the tool plate is connected to the actuator (such as the first drive motor 6). Quick docking and disengagement are achieved through a mechanical locking mechanism (the tool changer 5 is existing technology, and its structure will not be described in detail here).

[0040] The signal interaction process for changing the gun plate 5 is as follows: 1. After receiving the replacement instruction, the robot (manipulator) sends a control guidance signal through the CP signal line; 2. The tool disk uses a Hall sensor to provide feedback on the positioning status, triggering a locking action; 3. After the physical connection is completed, the power supply, air circuit and other medium channels will be automatically connected.

[0041] The electrode grinding device also includes a power control interface 10, which is electrically connected to the tool changing disc 5. The control signals between the power control interface 10 and the tool changing disc 5 are as follows: Command transmission: The power control interface 10 sends PWM waves or digital signals through the CP signal line to control the start / stop, speed adjustment or working mode switching of the gun changing plate 5 (such as the plugging and unplugging command of the charging pile gun head) 18.

[0042] Status feedback: The power control interface 10 receives real-time signals (such as position signals of the telescopic mechanism installed on the gun changing plate 5, or signals of abnormal temperature) returned by the Hall sensor or limit switch of the gun changing plate 5, and feeds them back to the controller through the signal line (such as the CC line) to form a closed-loop control.

[0043] In this embodiment, a buffer assembly is also included. The buffer assembly includes a fixing block 94 and an elastic element. The fixing block 94 is respectively disposed above and below the grinder 90, and the fixing block 94 is fixedly disposed on the connecting frame 8. The fixing block 94 can be connected and fixed to the connecting frame 8 by multiple bolts. The upper and lower fixing blocks 94 are respectively connected to the elastic element between the grinder 90 and the grinder 90. During the grinding process of the electrode 43, the grinder 90 can move up and down to squeeze the upper or lower elastic element, and adaptively adjust the buffering force according to the change of external force to protect the electrode 43.

[0044] The electrode 43 shaving tool 90 is a specialized device (in the prior art) for maintaining the electrode 43 cap or electrode 43 head of a spot welding machine. It restores the geometry and performance of the electrode 43 by cutting and repairing its surface, thereby ensuring the stability of welding quality. The shaving tool 90 includes a shaving tool body and a power module. A shaving port 91 is provided inside the shaving tool body, and a tool box is installed inside the shaving tool body. The blade is mounted on the tool box. The power module uses a second drive motor as the power source. The second drive motor is mounted on a connecting frame 8. Specifically, a circular through hole 81 is provided on the connecting frame 8, and the second drive motor is mounted on the connecting frame 8 by bolts. The output end of the second drive motor passes through the circular through hole 81 (e.g., ...). Figure 3 The second drive motor is a servo motor or a stepper motor, and the motor speed is converted into the cutting speed required by the cutter head (usually 100-500 rpm) through a reduction gear set, while maintaining stable torque.

[0045] The buffer assembly also includes a mounting rod 95. The grinding tool 90 has a through hole in the vertical direction. The mounting rod 95 is inserted into the through hole and fixedly connected to the grinding tool 90. The fixing block 94 has a through movable hole in the vertical direction. The upper and lower parts of the mounting rod 95 are slidably installed in the movable holes of the upper and lower fixing blocks 94, respectively. The elastic element is a spring 96, and the upper and lower springs 96 are respectively sleeved on the outside of the mounting rod 95.

[0046] Preferably, two buffer components are provided, and they are respectively located on the left and right sides of the grinder 90 (e.g., Figure 3 (As shown).

[0047] During the grinding process of electrode 43, the grinding tool 90 moves upward, which compresses the upper spring 96 and causes the mounting rod 95 to slide upward within the upper fixed block 94. Conversely, when the grinding tool 90 moves downward, it compresses the lower spring 96 and causes the mounting rod 95 to slide downward within the lower fixed block 94. This enables the grinding tool 90 to move up and down repeatedly, while the spring 96 acts as a buffer and protector for the grinding tool 90.

[0048] The entire grinding process consists of the following steps: 1. Positioning: The robotic arm 1 moves the grinding mechanism 9 to the position of the electrode 43 that needs to be ground.

[0049] 2. Adjusting the distance: The distance between the grinding mechanism 9 and the electrode 43 can be precisely adjusted by means of an electric telescopic mechanism (three-stage telescopic lead screw), or the angle can be adjusted in conjunction with a robotic arm.

[0050] 3. Grinding: The grinding mechanism 9 starts working to grind the electrode 43.

[0051] 4. Clean up debris: The vacuuming mechanism is activated to suck the debris generated during the grinding process into the debris collection box 93.

[0052] 5. Continuous grinding: After the first welding torch electrode 43 is ground, the robotic arm, in conjunction with the telescopic mechanism, drives the grinding mechanism 9 to move to the next welding torch electrode 43. The second and third welding torch electrodes 43 are ground in accordance with the above steps, so as to realize the continuous grinding of multiple welding torch electrodes 43 and improve the grinding efficiency.

[0053] Example 2 This embodiment provides an electrode grinding system, comprising multiple welding torches arranged in sequence (e.g., Figure 1 To facilitate differentiation, the multiple welding torches are named welding torch No. 1 (2), welding torch No. 2 (3), and welding torch No. 3 (4). Each welding torch includes a fixed welding frame 41 and a welding clamp 42 mounted on the welding frame 41. An electrode 43 is mounted at the end of the welding clamp 42. The torch also includes the electrode grinding device, which is used to grind the electrode 43.

[0054] The robotic arm includes an end effector 1, a gun changing disc 5, a telescopic mechanism, a connecting frame 8, and a grinding mechanism 9. Through the coordinated use of the robotic arm and the telescopic mechanism, the grinding mechanism 9 is moved to the electrode 43 to be ground. Then, the electrode 43 is precisely ground through the grinding port 91 on the grinding tool 90, which can replace manual grinding and reduce the error of manual grinding. The telescopic mechanism can also compensate for the grinding position and improve the feasibility of grinding. At the same time, driven by the robotic arm, the grinding mechanism 9 can be moved towards multiple welding guns, thereby continuously grinding the electrodes 43 of multiple welding guns and improving grinding efficiency.

[0055] The beneficial effects of the technical solution of this utility model are: High degree of automation: The entire grinding process is completed by robotic arm 1 and electric device, without the need for human intervention.

[0056] High grinding precision: It adopts a three-stage telescopic screw structure 7, which can accurately adjust the grinding position.

[0057] Buffer design: A spring 96 is installed on the mounting rod 95, which can automatically adjust the buffer force according to changes in external force during the grinding process to avoid damaging the electrode 43.

[0058] Eco-friendly design: The dust collection device and debris collection device effectively prevent debris from flying and protect the working environment.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrode grinding device, characterized in that, include: robotic arm; The end effector (1) of the robotic arm is connected to one end of the gun changing disc (5); Telescopic mechanism, one end of which is connected to the other end of the gun changing disc (5); Connecting frame (8), the other end of the telescopic mechanism is connected to the connecting frame (8); The grinding mechanism (9) is mounted on the connecting frame (8). The grinding mechanism (9) includes a grinding tool (90) and a grinding port (91) for grinding the electrode (43) is provided on the grinding tool (90).

2. The electrode grinding device according to claim 1, characterized in that, It also includes a dust collection mechanism, wherein a dust removal channel is opened on the side wall of the grinding port (91), and the suction port of the dust collection mechanism is connected to the dust removal channel.

3. The electrode grinding device according to claim 2, characterized in that, The dust collection mechanism includes a negative pressure unit and a dust collection pipe (92). The suction port of the negative pressure unit is connected to the dust removal channel through the dust collection pipe (92).

4. The electrode grinding device according to claim 3, characterized in that, The vacuuming mechanism also includes a debris collection box (93), and the outlet of the negative pressure unit leads to the debris collection box (93).

5. The electrode grinding device according to claim 1, characterized in that, The telescopic mechanism includes a first drive motor (6) and a three-stage telescopic screw structure (7). The first drive motor (6) is mounted on the gun changing disc (5). The output end of the first drive motor (6) is connected to one end of the three-stage telescopic screw structure (7). The first drive motor (6) is used to drive the three-stage telescopic screw structure (7) to telescopic. The other end of the three-stage telescopic screw structure (7) is connected to the connecting frame (8).

6. The electrode grinding device according to claim 1, characterized in that, It also includes a buffer assembly, which includes a fixed block (94) and an elastic element. The fixed block (94) is respectively disposed above and below the grinder (90), and the fixed block (94) is fixedly disposed on the connecting frame (8). The upper and lower fixed blocks (94) are respectively connected to the elastic element between the grinder (90).

7. The electrode grinding device according to claim 6, characterized in that, The buffer assembly also includes a mounting rod (95), the grinder (90) has a through hole in the vertical direction, the mounting rod (95) is inserted into the through hole and fixedly connected to the grinder (90), the fixing block (94) has a through movable hole in the vertical direction, and the upper and lower parts of the mounting rod (95) are slidably installed in the movable holes of the upper and lower fixing blocks (94) respectively; The elastic element is a spring (96), and the upper and lower springs (96) are respectively sleeved on the outside of the mounting rod (95).

8. The electrode grinding device according to claim 7, characterized in that, Two buffer components are provided, and they are respectively located on the left and right sides of the grinder (90).

9. The electrode grinding device according to claim 1, characterized in that, It also includes a power control interface (10), which is electrically connected to the gun changing disc (5).

10. An electrode grinding system comprising a plurality of welding torches, each welding torch comprising a fixed welding frame (41) and welding clamps (42) disposed on the welding frame (41), wherein an electrode cap (43) and an electrode (43) are disposed at the end of the welding clamps (42), characterized in that, It also includes the electrode grinding apparatus according to any one of claims 1-9, the electrode grinding apparatus being used to grind the electrode (43).

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