A smart workstation for automotive frame welding

Abstract

This invention relates to the field of automated welding equipment technology, and provides a compact intelligent workstation for automotive frame welding. It includes a frame, a resistance welding unit slidably connected to the frame, and a grinding unit located on one side of the frame. The resistance welding unit has an upper electrode cap and a lower electrode cap that slide vertically towards each other. The grinding unit includes a grinding mechanism and a mounting frame. The grinding mechanism has a grinding head, and two rotating rings located on the upper and lower sides of the grinding head are rotatably connected to the mounting frame. The inner walls of the rotating rings are provided with several flexible chip removal plates. The upper and lower electrode caps slide towards each other, passing through the rotating rings and contacting the grinding head for grinding. When they move away from each other, the rotating rings rotate, causing the flexible chip removal plates to move circumferentially, removing the electrostatically adsorbed grinding debris from the electrode cap surface. This solution integrates grinding and chip removal functions, solving the problem of unstable welding quality caused by incomplete chip removal in existing technologies. It features a compact structure, ensuring weld joint quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical automated welding equipment technology, and more specifically, to an integrated intelligent workstation for welding automotive frames. Background Technology

[0002] The automotive frame assembly is a core component of the automotive door and window system. Its structural integrity and connection strength directly affect the sealing performance, smoothness of lifting and lowering, and safety and reliability of automotive doors and windows. Resistance welding has become the mainstream connection process in the production of automotive frame assemblies due to its advantages such as high welding efficiency, good joint consistency, and controllable cost. Among them, the electrode cap, as the core execution component of resistance welding, directly determines the welding current density, contact resistance stability, and weld formation quality based on its end face condition.

[0003] During long-term welding operations, the electrode cap end face will deform, oxidize, and adhere materials due to high-temperature extrusion, requiring periodic re-grinding to restore its standard dimensions and surface accuracy. However, in existing electrode cap re-grinding processes, the high-speed friction between the re-grinding tool and the electrode cap end face generates a large amount of static electricity. This static electricity creates a strong electrostatic field on the surface of the re-grinded electrode cap, which then attracts metal shavings generated during the re-grinding process. These shavings adsorbed on the electrode cap end face cannot be removed naturally and, when carried into subsequent welding processes, lead to the following problems:

[0004] Abnormal fluctuations in welding contact resistance cause uneven distribution of welding current, resulting in defects such as weld nugget displacement, incomplete penetration, or overheating, which reduce the mechanical strength and sealing performance of the welded joint.

[0005] The grinding debris forms gaps on the contact surface between the electrode cap and the workpiece, resulting in inconsistent weld indentations and poor surface quality, which does not meet the appearance and dimensional accuracy requirements of automotive parts.

[0006] The continuous accumulation of abrasive shavings will accelerate the secondary wear of the electrode cap, shorten its service life, and increase the frequency of downtime during the welding process, affecting production efficiency and product qualification rate.

[0007] Currently, the industry's approach to addressing this issue primarily involves using a chip blowing device to disperse the abrasive shavings. However, these devices cannot completely remove the shavings adhering to the electrode cap, making it difficult to improve the stability of welding quality. Summary of the Invention

[0008] To overcome the above-mentioned defects, embodiments of the present invention provide an integrated intelligent workstation for automotive frame welding, which solves the technical problem in the prior art where, after the electrode cap is ground, static electricity is generated during the grinding process, which easily attracts grinding debris, thereby affecting the quality and stability of the welded joint.

[0009] According to one aspect, at least one embodiment of the present invention provides an integrated intelligent workstation for automotive frame welding, comprising:

[0010] frame,

[0011] The resistance welding unit is slidably connected to the frame. The resistance welding unit has an upper electrode cap and a lower electrode cap that can slide vertically towards each other.

[0012] The grinding unit, located on one side of the frame, is used for grinding the upper electrode cap and the lower electrode cap;

[0013] The grinding unit includes:

[0014] The grinding mechanism is located on the side of the frame and has a grinding head for grinding the upper electrode cap and the lower electrode cap.

[0015] The mounting frame is located on the grinding mechanism. Two rotating rings are rotatably connected to the mounting frame. The two rotating rings are located on the upper and lower sides of the grinding head, respectively. Several flexible chip removal plates are provided on the inner wall of the rotating rings.

[0016] The upper and lower electrode caps can slide towards each other, causing the flexible chip removal plate to deform and penetrate the rotating ring, thus coming into contact with the grinding head;

[0017] When the upper and lower electrode caps are facing away from the grinding head, the rotating ring can rotate to drive the flexible chip removal plate to move circumferentially to remove the grinding debris attached to the upper and lower electrode caps.

[0018] For example, in a compact intelligent workstation for automotive frame welding provided by at least one embodiment of the present invention, the end of the flexible chip removal plate away from the inner wall of the rotating ring has a contact surface;

[0019] When the upper and lower electrode caps are facing away from the grinding head, the mating surfaces can fit against the outer circumferential surface of the upper or lower electrode cap to remove the attached grinding debris.

[0020] For example, in a compact intelligent workstation for automotive frame welding provided in at least one embodiment of the present invention, a swing rod is hinged to the grinding head, and a first torsion spring is provided at the connecting end of the swing rod. The first torsion spring is used to provide the torque for the swing rod to swing close to the grinding head.

[0021] The swing end of the swing arm has two first mounting parts, which are located on the upper and lower sides of the grinding head respectively. The first mounting parts are rotatably connected to a first abutting rubber wheel, which is used to abut against the outer peripheral wall of the rotating ring to drive the rotating ring to rotate.

[0022] For example, in a compact intelligent workstation for automotive frame welding provided in at least one embodiment of the present invention, a connecting rod is provided between the two first mounting parts, and a swing drive is provided on the side of the grinding head. The swing drive can drive the swing rod to swing so that the first abutting rubber wheel is released from contact with the outer peripheral wall of the rotating ring.

[0023] For example, in a car frame welding integrated intelligent workstation provided in at least one embodiment of the present invention, the outer peripheral wall of the rotating ring is provided with a plurality of anti-slip protrusions for abutting against the first abutting rubber wheel, and the plurality of anti-slip protrusions are evenly distributed circumferentially.

[0024] For example, in a compact intelligent workstation for automotive frame welding provided by at least one embodiment of the present invention, two rotating rings arranged vertically and vertically form a group, and there are several groups of rotating rings.

[0025] A rotating disk is rotatably connected to the mounting bracket. The rotating disk has several circumferentially arranged second mounting parts, and several sets of rotating rings are rotatably connected to the several second mounting parts in a corresponding manner. The rotating disk can rotate to drive the several sets of rotating rings to pass through the grinding head in sequence.

[0026] The second mounting section has a clearance space, which is used to avoid the grinding head when the second mounting section moves circumferentially.

[0027] For example, in a compact intelligent workstation for automotive frame welding provided in at least one embodiment of the present invention, the rotating ring is detachably connected to the second mounting part.

[0028] For example, in an automotive frame welding integrated intelligent workstation provided by at least one embodiment of the present invention, the mounting frame is also provided with a sliding frame that can slide horizontally between two upper and lower rotating rings. The upper and lower sides of the sliding frame are swayingly connected with cleaning rods. The connection of the cleaning rods is provided with a second torsion spring for keeping them in a vertical state. The cleaning rods can swing vertically to avoid the push action of the second mounting part and can return to verticality under the drive of the second torsion spring. The sliding frame can slide close to the rotating disk so that the cleaning rods are located at the eccentric position of the rotating rings.

[0029] The upper and lower sides of the sliding frame are equipped with second abutting rubber wheels for synchronously driving the upper and lower rotating rings. The second abutting rubber wheels are used to contact the rotating rings to drive the rotating rings to rotate, so as to clean the flexible chip removal plate.

[0030] For example, in a compact intelligent workstation for automotive frame welding provided in at least one embodiment of the present invention, both the upper and lower ends of the sliding frame have protruding limiting surfaces, and the connecting end of the cleaning rod is provided with an abutting surface. The limiting surface can abut against the abutting surface after the cleaning rod is reset by the second torsion spring, so as to limit the swing amplitude of the cleaning rod.

[0031] For example, in an automotive frame welding integrated intelligent workstation provided by at least one embodiment of the present invention, two chip suction pipes are provided on the mounting frame, which extend to the upper and lower sides of the sliding frame respectively. The chip suction pipes are used to collect the grinding debris that falls off the flexible chip removal plate by negative pressure adsorption.

[0032] The beneficial effects of the embodiments of the present invention are as follows:

[0033] In this invention, the grinding and chip removal functions are integrated through the structural cooperation of the frame, resistance welding unit, and grinding unit. This eliminates the need for an additional electrode cap movement mechanism, simplifying the overall layout and making the workstation compact, meeting the requirements of intensive design and reducing the space occupied by the equipment. The rotating rings on the upper and lower sides of the grinding head drive the flexible chip removal plate to move circumferentially, forming continuous and comprehensive contact with the electrode cap surface, thoroughly removing electrostatically adsorbed grinding debris and solving the problem of incomplete cleaning by existing chip blowing devices.

[0034] This structure avoids fluctuations in welding contact resistance and weld defects caused by abrasive debris, ensuring the mechanical strength and sealing of the welded joint. It also prevents secondary wear on the electrode cap, extending its service life, reducing downtime due to malfunctions, and improving production efficiency and product qualification rate. The synchronized operation of the upper and lower rotating rings further enhances debris removal and production efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of an intelligent workstation for welding automotive frames, as shown in one embodiment of the present invention.

[0037] Figure 2 for Figure 1 A first-view structural schematic diagram of the grinding unit in the embodiment;

[0038] Figure 3 for Figure 1 A schematic diagram of the first cross-sectional structure of the grinding unit in the embodiment;

[0039] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0040] Figure 5 for Figure 1 A schematic diagram of the second-view structure of the grinding unit in the embodiment;

[0041] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0042] Figure 7 for Figure 1 A third-view structural diagram of the grinding unit in the embodiment;

[0043] Figure 8 for Figure 7 Enlarged view at point C;

[0044] Figure 9 for Figure 1 A schematic diagram of the second cross-sectional structure of the grinding unit in the embodiment;

[0045] Figure 10 for Figure 9 Enlarged view at point D;

[0046] Figure 11 for Figure 9 A magnified view of another state at point D.

[0047] In the diagram: 1. Frame, 2. Resistance welding unit, 21. Upper electrode cap, 22. Lower electrode cap, 3. Grinding unit, 31. Grinding mechanism, 32. Grinding head, 33. Mounting frame, 34. Rotating ring, 341. Flexible chip removal plate, 3411. Fitting surface, 35. Swing rod, 351. First mounting part, 352. First abutting rubber wheel, 353. Connecting rod, 354. Swing drive component, 342. Anti-slip ridge, 36. Rotating disk, 361. Second mounting part, 37. Sliding frame, 38. Cleaning rod, 39. Second abutting rubber wheel, 371. Limiting surface, 4. Chip suction pipe. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0049] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0050] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 the present invention.

[0053] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] This embodiment relates to the field of automated welding equipment technology and is applied to the resistance welding production of automotive frame assemblies. The automotive frame assembly is a core component of the automotive door and window system; its structural integrity and connection strength directly affect the sealing performance, smoothness of lifting and lowering, and safety and reliability of the automotive doors and windows. Resistance welding has become the mainstream connection process in the production of this component due to its advantages such as high welding efficiency, good joint consistency, and controllable cost. As the core executing component of resistance welding, the electrode cap's end face condition directly determines the welding current density, contact resistance stability, and weld formation quality.

[0055] During long-term welding operations, the electrode cap end face deforms, oxidizes, and adheres material due to high-temperature extrusion, requiring periodic grinding to restore standard dimensions and surface accuracy. During grinding, the high-speed friction between the grinding tool and the electrode cap end face generates static electricity, creating a strong electrostatic field on the electrode cap surface that attracts metal shavings. These shavings cannot fall off naturally and enter subsequent welding processes with the electrode cap, leading to abnormal fluctuations in welding contact resistance, deterioration of weld surface quality, and accelerated secondary wear of the electrode cap. Existing shaving removal devices cannot completely clean the shavings, making it difficult to improve welding quality stability. The integrated intelligent workstation provided in this embodiment solves the above technical problems by integrating grinding and shaving removal functions.

[0056] like Figure 1 As shown, the integrated intelligent workstation includes a frame 1, a resistance welding unit 2, and a grinding unit 3. The resistance welding unit 2 is slidably connected to the frame 1 and can slide horizontally along the frame 1, enabling switching between welding and grinding positions. The resistance welding unit 2 has an upper electrode cap 21 and a lower electrode cap 22, which can slide vertically towards each other to clamp the workpiece and complete the resistance welding operation. The grinding unit 3 is located on one side of the frame 1 and is used to restore the accuracy of the upper electrode cap 21 and lower electrode cap 22 after grinding operations.

[0057] The grinding unit 3 includes a grinding mechanism 31 and a mounting frame 33. The grinding mechanism 31 is fixed to the side of the frame 1, and its execution end is equipped with a grinding head 32, which can perform grinding treatment on the end face of the electrode cap. The mounting frame 33 is fixedly mounted on the grinding mechanism 31 and located on the side of the grinding head 32. Two rotating rings 34 are rotatably connected to the mounting frame 33. The two rotating rings 34 are located on the upper and lower sides of the grinding head 32, respectively, and their axis is collinear with the axis of the grinding head 32. A plurality of flexible chip removal plates 341 are arranged circumferentially on the inner wall of the rotating rings 34. The plurality of flexible chip removal plates 341 are evenly distributed to form a chip removal structure surrounding the upper and lower sides of the grinding head 32.

[0058] The upper electrode cap 21 and the lower electrode cap 22 can slide towards each other. When they pass through the corresponding rotating ring 34, they come into contact with the flexible chip removal plate 341, causing the flexible chip removal plate 341 to undergo elastic deformation until the end face of the electrode cap abuts against the grinding surface of the grinding head 32, thus completing the preparation for grinding. After grinding, the upper electrode cap 21 and the lower electrode cap 22 move away from the grinding head 32. At this time, the rotating ring 34 rotates around its own axis, driving the flexible chip removal plate 341 to move circumferentially, contacting the surface of the electrode cap and scraping away the grinding debris.

[0059] Optionally, the end of the flexible chip removal plate 341 away from the inner wall of the rotating ring 34 is provided with a contact surface 3411, such as... Figure 4As shown. The shape of the mating surface 3411 is adapted to the outer peripheral contours of the upper electrode cap 21 and the lower electrode cap 22. When the upper electrode cap 21 and the lower electrode cap 22 are facing away from the grinding head 32, the mating surface 3411 can fit against the outer peripheral surface of the electrode cap and perform circumferential scraping motion as the rotating ring 34 rotates. The mating surface 3411 ensures that the scraping force is evenly distributed, improves the thoroughness of the scraping of grinding debris, avoids excessive local force that may damage the surface of the electrode cap, and covers the entire outer peripheral surface of the electrode cap to prevent grinding debris residue.

[0060] Furthermore, a swing arm 35 is hinged to the grinding head 32 via a hinge shaft, such as... Figure 5 , Figure 6 As shown. A first torsion spring is fitted at the hinge shaft. One end of the first torsion spring is fixed to the grinding head 32, and the other end is fixed to the swing rod 35, which can provide the swing rod 35 with a continuous torque to swing toward the grinding head 32. The swing end of the swing rod 35 has two first mounting parts 351 integrally formed, and the two first mounting parts 351 are located on the upper and lower sides of the grinding head 32, respectively.

[0061] Each first mounting part 351 is rotatably connected to a first abutting rubber wheel 352 via a rotating shaft. A small drive motor is also provided on each first mounting part 351 to drive the first abutting rubber wheel 352. The outer circumferential surface of the first abutting rubber wheel 352 is adapted to the outer circumferential wall of the rotating ring 34. Under the torque of the first torsion spring, the first abutting rubber wheel 352 continuously abuts against the outer circumferential wall of the rotating ring 34, driving the rotating ring 34 to rotate through friction. The continuous torque provided by the first torsion spring ensures stable contact force, avoids transmission failure, ensures uniform rotational speed of the rotating ring 34, stabilizes the circumferential movement speed of the flexible chip removal plate 341, and improves the consistency of chip removal effect. The two first mounting parts 351 synchronously drive the two rotating rings 34 to rotate, achieving synchronous chip removal of the upper and lower electrode caps and improving work efficiency.

[0062] A connecting rod 353 is fixedly connected between the two first mounting parts 351, extending horizontally. A swing drive 354 is provided on the side of the grinding head 32. The swing drive 354 can be a small rotary cylinder, with its cylinder body fixed to the side of the grinding head 32. The rotating rod contacts the connecting rod 353. When the swing drive 354 is activated, its output end applies a force to the connecting rod 353, causing the swing rod 35 to swing around the hinge axis in a direction away from the grinding head 32. The first torsion spring is compressed, and the first abutting rubber wheel 352 releases contact with the outer peripheral wall of the rotating ring 34. This structure enables controllable switching of the transmission relationship between the first abutting rubber wheel 352 and the rotating ring 34, providing operating space when the abutment is released during maintenance or replacement of the rotating ring 34. The connecting rod 353 synchronously transmits the force of the swing drive 354 to the two first mounting parts 351, ensuring that the two first abutting rubber wheels 352 move synchronously and avoiding uneven stress on the structure. The cooperation between the swing drive component 354 and the first torsion spring makes the switching process smooth and controllable, improving the automation level and operational stability of the equipment.

[0063] The outer peripheral wall of the rotating ring 34 is integrally formed with several anti-slip protrusions 342 along the circumferential direction, such as... Figure 6 As shown, several anti-slip protrusions 342 are evenly distributed circumferentially and extend along the axial direction of the rotating ring 34. The anti-slip protrusions 342 can increase the friction coefficient of the outer peripheral wall of the rotating ring 34, improve the friction between it and the first contacting rubber wheel 352, avoid slippage during transmission, ensure the stable rotation speed of the rotating ring 34, and ensure the consistency of the chip removal effect.

[0064] Two vertically aligned rotating rings 34 form a chip removal assembly, and there are several sets of rotating rings 34. A rotating disk 36 is rotatably connected to the mounting bracket 33 via a rotating shaft. Figure 2 , Figure 7 As shown. The rotating disk 36 is driven by a drive motor, causing it to rotate around its axis. Several second mounting portions 361 are evenly distributed circumferentially around the outer periphery of the rotating disk 36. These second mounting portions 361 extend radially outwards along the rotating disk 36. Several sets of rotating rings 34 are rotatably connected to the ends of the second mounting portions 361 via rotating bearings. A clearance space is provided on the side of the second mounting portion 361 closest to the rotating ring 34. This clearance space is U-shaped, with its opening facing the grinding head 32, allowing it to avoid interference with the outline of the grinding head 32 as the second mounting portion 361 moves circumferentially with the rotating disk 36.

[0065] The cooperation of multiple sets of rotating rings 34 with the rotating disk 36 enables the rotation of the rotating rings 34, improving production efficiency and operational continuity. The second mounting portion 361 on the rotating disk 36 is evenly distributed circumferentially, ensuring precise alignment of the multiple sets of rotating rings 34 with the grinding head 32, guaranteeing equipment operational stability. The configuration of multiple sets of rotating rings 34 reduces the maintenance frequency and cost of the flexible chip removal plate 341.

[0066] The rotating ring 34 is detachably connected to the second mounting section 361. This detachable connection simplifies the maintenance and replacement process of the rotating ring 34. When the flexible chip removal plate 341 wears excessively, the rotating ring 34 can be removed from the second mounting section 361 for replacement. Simultaneously, this structure allows for the replacement of the rotating ring 34 with a suitable one to accommodate different electrode cap sizes, improving the workstation's adaptability to different workpieces and enhancing the equipment's practicality and flexibility.

[0067] like Figure 8 , Figure 9 As shown. The sliding frame 37 can slide horizontally to the area between the upper and lower rotating rings 34. Its sliding is driven by a cylinder, the cylinder body of which is fixed on the mounting bracket 33, and the piston rod is connected to the sliding frame 37. Cleaning rods 38 are oscillatingly connected to both the upper and lower sides of the sliding frame 37 via hinge seats. A second torsion spring is fitted at the hinge seat, one end of which is fixed to the sliding frame 37, and the other end is fixed to the cleaning rod 38, providing torque to keep the cleaning rod 38 vertical. Drive motors are also provided on the upper and lower sides of the sliding frame 37. The output shaft of the drive motor is connected to a second abutment rubber wheel 39, the outer circumferential surface of which is adapted to the outer circumferential wall of the rotating ring 34.

[0068] When any set of rotating rings 34 needs to clean the flexible cleaning plate 341, the rotating disk 36 drives the set of rotating rings 34 to rotate and approach the sliding frame 37. At this time, the second mounting part 361 can contact the cleaning rod 38 and push the cleaning rod 38 to swing. When the rotating disk 36 continues to drive the rotating rings 34 to move above the cleaning rod 38, the cleaning rod 38 can return to a vertical state under the action of the second torsion spring and contact the flexible cleaning plate 341 inside the rotating rings 34.

[0069] After the cleaning rod 38 returns to a vertical position within the rotating ring 34, the sliding frame 37 slides along the horizontal guide rail towards the rotating disk 36, causing the second abutting rubber wheel 39 to approach and abut against the outer peripheral wall of the rotating ring 34, thereby enabling the second abutting rubber wheel 39 to drive the rotating ring 34 to rotate. At this time, the cleaning rod 38 can move to an eccentric position within the rotating ring 34 under the sliding action of the sliding frame 37, and thus can sequentially abut and clean the flexible chip removal plate 341 under the rotation of the rotating ring 34.

[0070] This structure enables active cleaning of the flexible chip removal plates 341, preventing chip buildup and reduced cleaning efficiency, and ensuring the reliability of subsequent chip removal operations. The horizontal sliding design of the sliding frame 37 allows the cleaning mechanism to move closer to or further away from the rotating ring 34 as needed, without affecting the rotation of the rotating ring 34. The cleaning rod 38 is located eccentrically on the rotating ring 34, and in conjunction with the rotation of the rotating ring 34, it can clean all the flexible chip removal plates 341. The second abutment roller 39 drives the rotating ring 34 to rotate.

[0071] Both the upper and lower ends of the sliding frame 37 are integrally formed with protruding limiting surfaces 371, such as... Figure 10 , Figure 11 As shown, the connecting end of the cleaning rod 38 is provided with an abutment surface, which is positioned opposite to the limiting surface 371. When the second torsion spring drives the cleaning rod 38 to return to the vertical position, the abutment surface and the limiting surface 371 are tightly abutted, limiting the swing amplitude of the cleaning rod 38. The cooperation between the limiting surface 371 and the abutment surface ensures that the cleaning rod 38 can maintain a precise vertical position after each reset, avoiding insufficient contact with the flexible chip removal plate 341 or contact position deviation caused by inconsistent swing angles, thus ensuring the stability and consistency of the cleaning effect.

[0072] The limiting surface 371 provides stable support for the cleaning rod 38, preventing the cleaning rod 38 from shifting due to the reaction force of the flexible chip removal plate 341 during the cleaning process, and further improving the cleaning reliability.

[0073] Two chip suction pipes 4 are fixedly installed on the mounting bracket 33, such as Figure 9 As shown, two suction pipes 4 extend vertically to the upper and lower sides of the sliding frame 37, respectively. The suction inlet of the suction pipe 4 faces the contact area between the rotating ring 34 and the cleaning rod 38, and the other end of the suction pipe 4 is connected to a negative pressure generating device. When the cleaning rod 38 cleans the flexible cleaning plate 341, the negative pressure generating device is activated, and a continuous negative pressure is generated at the suction inlet of the suction pipe 4. The abrasive scraped by the cleaning rod 38 is sucked into the suction pipe 4 under the action of negative pressure and transported to the collection device. The suction pipe 4 enables timely collection of abrasives, preventing abrasives from scattering into the equipment or working environment during the cleaning process, and preventing abrasives from being re-adsorbed onto the electrode cap, rotating ring 34, or flexible cleaning plate 341, thus ensuring the overall cleaning effect of the abrasive cleaning system.

[0074] The dust suction pipe 4 is positioned on the upper and lower sides of the sliding frame 37, with the suction inlet facing the cleaning area. This allows for precise capture of grinding debris, resulting in high adsorption efficiency and reduced debris residue. The cooperation between the dust suction pipe 4 and the cleaning mechanism forms a closed-loop process of cleaning and adsorption, making the removal of grinding debris more thorough and enhancing the efficiency and intelligence of the workstation.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A compact intelligent workstation for automotive frame welding, characterized in that, include: Rack (1), Resistance welding unit (2) is slidably connected to the frame (1). The resistance welding unit (2) has an upper electrode cap (21) and a lower electrode cap (22) that can slide vertically toward each other. A grinding unit (3) is located on one side of the frame (1) and is used to grind the upper electrode cap (21) and the lower electrode cap (22). The grinding unit (3) includes: A grinding mechanism (31) is provided on the side of the frame (1). The grinding mechanism (31) has a grinding head (32) for grinding the upper electrode cap (21) and the lower electrode cap (22). Mounting bracket (33) is provided on the grinding mechanism (31). Two rotating rings (34) are rotatably connected to the mounting bracket (33). The two rotating rings (34) are located on the upper and lower sides of the grinding head (32) respectively. The inner wall of the rotating ring (34) is provided with several flexible chip removal plates (341). The upper electrode cap (21) and the lower electrode cap (22) can slide towards each other, causing the flexible chip removal plate (341) to deform and penetrate the rotating ring (34), thereby abutting against the grinding head (32); When the upper electrode cap (21) and the lower electrode cap (22) are facing away from the grinding head (32), the rotating ring (34) can rotate to drive the flexible chip removal plate (341) to move circumferentially to remove the grinding debris attached to the upper electrode cap (21) and the lower electrode cap (22). Two rotating rings (34) arranged vertically and vertically form a group, and there are several groups of rotating rings (34); A rotating disk (36) is rotatably connected to the mounting bracket (33). The rotating disk (36) has several second mounting parts (361) arranged circumferentially. Several sets of rotating rings (34) are rotatably connected to the several second mounting parts (361) in a corresponding manner. The rotating disk (36) can rotate to drive the several sets of rotating rings (34) to pass through the grinding head (32) in sequence. The second mounting part (361) has a clearance space for avoiding the grinding head (32) when the second mounting part (361) moves circumferentially. The mounting bracket (33) is also provided with a sliding bracket (37) that can slide horizontally between the upper and lower rotating rings (34). The upper and lower sides of the sliding bracket (37) are swayed and connected with cleaning rods (38). The connection of the cleaning rods (38) is provided with a second torsion spring for keeping them vertical. The cleaning rods (38) can swing vertically to avoid the pushing action of the second mounting part (361) and can return to vertical under the drive of the second torsion spring. The sliding bracket (37) can slide close to the rotating disk (36) so that the cleaning rods (38) are located at the eccentric position of the rotating rings (34). The upper and lower sides of the sliding frame (37) are provided with second abutting rubber wheels (39) for synchronously driving the upper and lower two rotating rings (34). The second abutting rubber wheels (39) are used to contact the rotating rings (34) to drive the rotating rings (34) to rotate, so as to clean the flexible chip removal plate (341).

2. The automotive frame welding integrated intelligent workstation according to claim 1, characterized in that, The flexible chip removal plate (341) has a contact surface (3411) at one end away from the inner wall of the rotating ring (34). When the upper electrode cap (21) and the lower electrode cap (22) are facing away from the grinding head (32), the contact surface (3411) can be attached to the outer peripheral surface of the upper electrode cap (21) or the lower electrode cap (22) to remove the attached grinding debris.

3. The automotive frame welding integrated intelligent workstation according to claim 1, characterized in that, A swing rod (35) is hinged to the grinding head (32), and a first torsion spring is provided at the connecting end of the swing rod (35). The first torsion spring is used to provide the torque for the swing rod (35) to swing close to the grinding head (32). The swing end of the swing rod (35) has two first mounting parts (351), which are located on the upper and lower sides of the grinding head (32). The first mounting parts (351) are rotatably connected to a first abutting rubber wheel (352), which is used to abut against the outer peripheral wall of the rotating ring (34) to drive the rotating ring (34) to rotate.

4. The automotive frame welding integrated intelligent workstation according to claim 3, characterized in that, A connecting rod (353) is provided between the two first mounting parts (351), and a swing drive (354) is provided on the side of the grinding head (32). The swing drive (354) can drive the swing rod (35) to swing so that the first abutting rubber wheel (352) is released from contact with the outer peripheral wall of the rotating ring (34).

5. The automotive frame welding integrated intelligent workstation according to claim 4, characterized in that, The outer peripheral wall of the rotating ring (34) is provided with a plurality of anti-slip protrusions (342) for abutting against the first abutting rubber wheel (352), and the plurality of anti-slip protrusions (342) are evenly distributed circumferentially.

6. The automotive frame welding integrated intelligent workstation according to claim 1, characterized in that, The rotating ring (34) is detachably connected to the second mounting part (361).

7. The automotive frame welding integrated intelligent workstation according to claim 1, characterized in that, The sliding frame (37) has protruding limiting surfaces (371) at both the upper and lower ends. The connecting end of the cleaning rod (38) is provided with an abutting surface. The limiting surface (371) can abut against the abutting surface after the second torsion spring drives the cleaning rod (38) to reset, so as to limit the swing amplitude of the cleaning rod (38).

8. The automotive frame welding integrated intelligent workstation according to claim 1, characterized in that, The mounting frame (33) is provided with two chip suction pipes (4) that extend to the upper and lower sides of the sliding frame (37) respectively. The chip suction pipes (4) are used to collect the grinding debris that falls off the flexible chip removal plate (341) by negative pressure adsorption.

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