A multi-specification stamping part universal nut automatic welding tool

Abstract

The present application relates to welding device technical field, specifically to a kind of multi-specification stamping part general nut automatic welding tool, including bottom plate and top plate being located at the top of bottom plate;The bottom plate is slidably provided with clamping seat along Y axis direction;The top plate is sequentially arranged with first side welding mechanism, second side welding mechanism and bottom welding mechanism along Y axis direction;The top of the clamping seat is provided with first placement platform and second placement platform along X axis direction;The clamping seat is provided with placement pit between first placement platform and second placement platform.The present application sequentially arranges first side welding mechanism, second side welding mechanism and bottom welding mechanism along Y axis direction in top plate, and clamping seat drives workpiece single linear movement, that is, the nut automatic welding of two vertical inner side walls of inverted U-shaped workpiece, the bottom of two side horizontal arms can be sequentially completed, without multiple clamping sequence, effectively shorten single workpiece processing cycle.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to an automated welding fixture for universal nuts of various specifications of stamped parts. Background Technology

[0002] In the sheet metal manufacturing industry, stamped brackets and mounting bases with inverted V-shaped cross sections are widely used. These types of workpieces usually require nuts to be welded to the bottom of the two vertical inner walls and the two horizontal arms on both sides for subsequent assembly and connection of parts.

[0003] Currently, the nut welding process for this type of workpiece generally suffers from the following drawbacks: First, traditional processing methods often employ manual single-point welding or single-station step-by-step welding, requiring multiple clamping, flipping, and positioning of the workpiece to sequentially complete the welding of the nut on the inner wall and bottom. This not only results in low production efficiency but also leads to cumulative errors due to multiple positioning steps, causing large deviations in the nut welding position and making it difficult to guarantee assembly accuracy. Second, existing automated welding fixtures are mostly custom-designed equipment, only suitable for workpieces of a single size. When the specifications of the stamped parts being produced change, extensive adjustments or even complete replacements of the fixture's positioning structure and welding stations are required, resulting in long changeover cycles, high costs, and an inability to adapt to the flexible production needs of multiple varieties and small batches, lacking versatility. Furthermore, to achieve automatic nut feeding, pushing, welding, and clamping actions, existing automated equipment typically requires multiple independent drive units such as cylinders and servo motors, along with complex electrical control systems and sensing elements. This results in high overall equipment costs, difficulty in synchronizing the actions of multiple drive units, high failure rates under long-term high-frequency operation, and high daily maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing an automated welding fixture for universal nuts for multi-specification stamped parts.

[0005] The objective of this invention is achieved through the following technical solution: an automated welding fixture for universal nuts of various specifications of stamped parts, comprising a base plate and a top plate disposed on the top of the base plate; the base plate is provided with a clamping seat sliding along the Y-axis direction; The top plate is provided with a first side welding mechanism, a second side welding mechanism and a bottom welding mechanism arranged sequentially along the Y-axis. The top of the clamping seat is provided with a first placement platform and a second placement platform along the X-axis; the clamping seat is provided with a placement recess between the first placement platform and the second placement platform.

[0006] The present invention is further configured such that the first side welding mechanism includes a first side feeding shell disposed at the bottom of the top plate and a first side feeding track disposed at the top of the top plate; the bottom of the first side feeding shell is provided with a first side feeding channel communicating with the bottom of the first side feeding track; the bottom of the first side feeding shell is provided with a first side pushing channel through the X-axis direction; the bottom of the first side pushing channel is connected to the bottom of the first side feeding channel. The first side welding mechanism further includes a first side pusher shell that is slidably disposed at the bottom of the top plate along the X-axis direction; the first side pusher shell is provided with a first side pusher electrode; the first side pusher electrode is movably disposed in the first side pusher channel; the clamping seat is provided with a first side welding electrode on one side wall of the placement recess along the X-axis direction; the first side pusher electrode is used to push the nut of the first side pusher channel toward the first side welding electrode.

[0007] The present invention is further configured such that a first side return spring is provided between the first side pusher shell and the first side feeder shell; the first side pusher shell is provided with a first side drive rod; the first side drive rod extends along the X-axis direction; the first side drive rod slides through the first side feeder shell; the first side drive rod is rotatably provided with a first side roller; the top of the clamping seat is provided with a first side guide block; both sides of the first side guide block are provided with a first side abutment slope that cooperates with the first side roller.

[0008] The present invention is further configured such that the second side welding mechanism includes a second side feeding shell disposed at the bottom of the top plate and a second side feeding track disposed at the top of the top plate; the bottom of the second side feeding shell is provided with a second side feeding channel communicating with the bottom of the second side feeding track; the bottom of the second side feeding shell is provided with a second side pushing channel through the X-axis direction; the bottom of the second side pushing channel is connected to the bottom of the second side feeding channel. The second side welding mechanism further includes a second side pusher shell that is slidably disposed at the bottom of the top plate along the X-axis direction; the second side pusher shell is provided with a second side pusher electrode; the second side pusher electrode is movably disposed in the second side pusher channel; the clamping seat is provided with a second side welding electrode on the other side wall of the placement recess along the X-axis direction; the second side pusher electrode is used to push the nut of the second side pusher channel toward the second side welding electrode.

[0009] The invention is further configured such that a second-side return spring is provided between the second-side pusher shell and the second-side feeder shell; the second-side pusher shell is provided with a second-side drive rod; the second-side drive rod extends along the X-axis direction; the second-side drive rod slides through the second-side feeder shell; the second-side drive rod is rotatably provided with a second-side roller; the top of the clamping seat is provided with a second-side guide block; both sides of the second-side guide block are provided with second-side abutment inclined surfaces that cooperate with the second-side rollers.

[0010] The present invention is further configured such that the clamping seat is provided with a bottom welding channel at the bottom of both the first placement platform and the second placement platform; the bottom welding channel is provided with a sliding column that is movably raised and lowered; the top of the sliding column is provided with a bottom pushing electrode; the bottom of the sliding column protrudes from the bottom of the clamping seat; a first bottom return spring is provided between the bottom of the sliding column and the clamping seat; and a first bottom roller is provided rotatably at the bottom of the sliding column.

[0011] The invention is further configured such that the clamping seat is provided with a bottom pushing channel extending along the X-axis at both the first placement platform and the second placement platform; the inner side of the bottom pushing channel is connected to the top of the bottom welding channel; a push rod is slidably provided on the outer side of the bottom pushing channel along the X-axis; a second bottom return spring is provided between the end of the push rod near the bottom welding channel and the clamping seat; a second bottom roller is rotatably provided on the end of the push rod away from the bottom welding channel; and a permanent magnet is provided on the outer side of the bottom pushing channel.

[0012] The present invention is further configured such that the bottom welding mechanism includes a first bottom welding electrode, a first bottom feeding track, a second bottom welding electrode, and a second bottom feeding track arranged sequentially along the Y-axis direction; The first bottom feeding track and the second bottom feeding track are respectively installed on the top plate; the first bottom welding electrode and the second bottom welding electrode are respectively slidably installed at the bottom of the top plate; a third bottom return spring is provided between the first bottom welding electrode and the top plate and between the second bottom welding electrode and the top plate. The base plate is provided with a first top block and a second top block that cooperate with the first bottom roller; the first top block is located at the bottom of the first bottom welding electrode; the second top block is located at the bottom of the second bottom welding electrode; The bottom of the top plate is provided with a driving block; both sides of the driving block are provided with bottom abutment slopes that cooperate with the second bottom roller; the driving block is located between the first bottom feeding track and the second bottom welding electrode.

[0013] The present invention is further configured such that the base plate is provided with a linear module extending along the Y-axis direction; the output end of the linear module is connected to the clamping seat.

[0014] The present invention is further configured such that: one end of the base plate along the Y-axis is provided with a first discharge block that cooperates with a first bottom roller; the other end of the base plate along the Y-axis is provided with a second discharge block that cooperates with the first bottom roller; the top plate is provided with a first notch on the top of the first discharge block; and the top plate is provided with a second notch on the top of the second discharge block.

[0015] The beneficial effects of the present invention are as follows: By arranging the first side welding mechanism, the second side welding mechanism and the bottom welding mechanism in sequence along the Y-axis direction on the top plate, the clamping seat drives the workpiece to move linearly in a single movement, which can automatically complete the welding of nuts on the two vertical inner walls and the bottom of the horizontal arms on both sides of the inverted "U" shaped workpiece in sequence. This eliminates the need for multiple clamping and turning operations and effectively shortens the processing cycle of a single workpiece. Attached Figure Description

[0016] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after the top plate is hidden; Figure 3 This is a schematic diagram of the structure of the clamping seat and the workpiece of the present invention; Figure 4 This is a cross-sectional view of the clamping seat of the present invention mating with the workpiece; Figure 5 This is a schematic diagram of the structure of the clamping base of the present invention; Figure 6 This is a structural schematic diagram of the clamping base of the present invention from another perspective; Figure 7 This is a schematic diagram of the top plate of the present invention; Figure 8 This is a cross-sectional view of the clamping seat of the present invention when the welding mechanism is on the first side; Figure 9 yes Figure 8 A magnified view of part A in the middle; Figure 10 This is a cross-sectional view of the clamping seat of the present invention when the welding mechanism is on the second side; Figure 11 yes Figure 10 A magnified view of part B in the middle; Wherein: 11. Workpiece; 12. Nut; 2. Base plate; 21. First top block; 22. Second top block; 23. First discharge block; 24. Second discharge block; 3. Top plate; 31. Drive block; 32. Bottom abutment slope; 33. First notch; 34. Second notch; 4. Clamping seat; 41. First placement platform; 42. Second placement platform; 43. Placement recess; 44. First side welding electrode; 45. Second side welding electrode; 46. First side guide block; 461. First side abutment slope; 47. Second side guide block; 471. Second side abutment slope; 48. Bottom welding channel; 481. Sliding column; 482. Bottom pusher electrode; 483. First bottom return spring; 484. First bottom roller; 49. Bottom pusher channel; 491. Push rod; 492. Second... 493. Bottom return spring; 494. Second bottom roller; 51. Permanent magnet; 52. First side feeding shell; 53. First side feeding track; 54. First side feeding channel; 55. First side pushing channel; 56. First side pushing electrode; 57. First side return spring; 58. First side drive rod; 59. First side roller; 61. Second side feeding shell; 62. Second side feeding track; 63. Second side feeding channel; 64. Second side pushing channel; 65. Second side pushing electrode; 66. Second side return spring; 67. Second side drive rod; 68. Second side roller; 69. Second side pushing shell; 71. First bottom welding electrode; 72. First bottom feeding track; 73. Second bottom welding electrode; 74. Second bottom feeding track; 8. Linear module. Detailed Implementation

[0018] The present invention will be further described in conjunction with the following embodiments.

[0019] Depend on Figures 1 to 11 As can be seen, the automated welding fixture for a universal nut 12 for multi-specification stamping parts described in this embodiment includes a base plate 2 and a top plate 3 disposed on the top of the base plate 2; the base plate 2 is provided with a clamping seat 4 slidably along the Y-axis direction; The top plate 3 is provided with a first side welding mechanism, a second side welding mechanism and a bottom welding mechanism arranged sequentially along the Y-axis. The top of the clamping seat 4 is provided with a first placement platform 41 and a second placement platform 42 along the X-axis direction; the clamping seat 4 is provided with a placement recess 43 between the first placement platform 41 and the second placement platform 42.

[0020] Specifically, in this embodiment, the automated welding fixture for the universal nut 12 of multi-specification stamping parts has a base plate 2 and a top plate 3 forming a fixed support frame for the fixture. The clamping seat 4 can reciprocate on the base plate 2 along the Y-axis, driving the workpiece 11 to pass through the first side welding mechanism, the second side welding mechanism and the bottom welding mechanism in sequence. When the workpiece 11 is placed, the horizontal arms on both sides of the inverted V-shaped stamping part are supported on the top surfaces of the first placement platform 41 and the second placement platform 42, respectively. The groove in the middle of the workpiece 11 is embedded in the placement pit 43, so that the two vertical inner side walls are respectively attached to the inner walls on both sides of the placement pit 43 for positioning, thereby realizing the quick clamping and positioning of the workpiece 11 on the clamping seat 4.

[0021] In this embodiment, by arranging the first side welding mechanism, the second side welding mechanism and the bottom welding mechanism in sequence along the Y-axis direction on the top plate 3, the clamping seat 4 drives the workpiece 11 to move linearly in a single step, so that the nuts 12 at the bottom of the two vertical inner side walls and the two horizontal arms on both sides of the inverted "U" shaped workpiece 11 can be automatically welded in sequence without the need for multiple clamping and turning, effectively shortening the processing cycle of a single workpiece 11.

[0022] The automated welding fixture for a universal nut 12 for multi-specification stamping parts described in this embodiment includes a first side welding mechanism comprising a first side feeding shell 51 located at the bottom of a top plate 3 and a first side feeding track 52 located at the top of the top plate 3; the bottom of the first side feeding shell 51 is provided with a first side feeding channel 53 communicating with the bottom of the first side feeding track 52; the bottom of the first side feeding shell 51 is provided with a first side pushing channel 54 extending along the X-axis direction; the bottom of the first side pushing channel 54 is connected to the bottom of the first side feeding channel 53. The first side welding mechanism further includes a first side pusher shell 59 that is slidably disposed at the bottom of the top plate 3 along the X-axis direction; the first side pusher shell 59 is provided with a first side pusher electrode 55; the first side pusher electrode 55 is movably disposed in the first side pusher channel 54; the clamping seat 4 is provided with a first side welding electrode 44 on one side wall of the placement recess 43 along the X-axis direction; the first side pusher electrode 55 is used to push the nut 12 of the first side pusher channel 54 toward the first side welding electrode 44.

[0023] Specifically, the nut 12 is conveyed from top to bottom via the first side feeding track 52 and falls into the first side pushing channel 54 via the first side feeding channel 53. When the clamping seat 4 moves the workpiece 11 to the corresponding station of the first side welding mechanism, the first side pushing shell 59 slides along the X-axis in the direction of the placement pit 43, causing the first side pushing electrode 55 to extend out of the first side pushing channel 54, pushing the nut 12 in the channel toward the first side welding electrode 44 on the side wall of the placement pit 43, so that the nut 12 is tightly attached to the vertical inner side wall surface of the workpiece 11. After the first side pushing electrode 55 and the first side welding electrode 44 are energized, a welding circuit is formed, and the resistance welding of the nut 12 and the inner side wall of the workpiece 11 is completed.

[0024] This embodiment describes an automated welding fixture for a universal nut 12 for multi-specification stamping parts. A first-side return spring 56 is provided between the first-side pusher shell 59 and the first-side feed shell 51. The first-side pusher shell 59 is provided with a first-side drive rod 57. The first-side drive rod 57 extends along the X-axis direction. The first-side drive rod 57 slides through the first-side feed shell 51. The first-side drive rod 57 is rotatably equipped with a first-side roller 58. The top of the clamping seat 4 is provided with a first-side guide block. Both sides of the first-side guide block are provided with first-side abutment inclined surfaces 461 that cooperate with the first-side rollers 58.

[0025] Specifically, during the movement of the clamping seat 4 along the Y-axis, the first side guide block moves synchronously with the clamping seat 4. After the first side of the end of the first side guide block abuts against the inclined surface 461 and contacts the first side roller 58, it gradually squeezes the first side roller 58, causing the first side drive rod 57 to slide along the X-axis towards the placement pit 43, thereby pushing the first side pusher shell 59 to compress the first side return spring 56 and extend it, realizing the pusher welding action; when the clamping seat 4 continues to move and the first side guide block separates from the first side roller 58, the first side return spring 56 releases its elastic force, driving the first side pusher shell 59, The first side drive rod 57 and the first side roller 58 are reset, and the first side push channel 54 is reconnected with the first side feeding channel 53. The next nut 12 falls into the push channel to wait for the next welding. Since the first side guide block is provided with the first side abutting inclined surface 461 on both sides, the push action can be triggered when the clamping seat 4 moves forward and backward through this station. In this embodiment, the linear movement of the clamping seat 4 itself is used as the power input. The Y-axis movement is converted into X-axis push movement through the cooperation of the first side abutting inclined surface 461 and the first side roller 58. There is no need to configure additional independent drive components such as cylinders and motors.

[0026] The automated welding fixture for a universal nut 12 for multi-specification stamping parts described in this embodiment includes a second-side welding mechanism comprising a second-side feeding shell 61 located at the bottom of the top plate 3 and a second-side feeding track 62 located at the top of the top plate 3; the bottom of the second-side feeding shell 61 is provided with a second-side feeding channel 63 communicating with the bottom of the second-side feeding track 62; the bottom of the second-side feeding shell 61 is provided with a second-side pushing channel 64 extending along the X-axis direction; the bottom of the second-side pushing channel 64 is connected to the bottom of the second-side feeding channel 63. The second side welding mechanism further includes a second side pusher shell 69 that is slidably disposed at the bottom of the top plate 3 along the X-axis direction; the second side pusher shell 69 is provided with a second side pusher electrode 65; the second side pusher electrode 65 is movably disposed in the second side pusher channel 64; the clamping seat 4 is provided with a second side welding electrode 45 on the other side wall of the placement recess 43 along the X-axis direction; the second side pusher electrode 65 is used to push the nut 12 of the second side pusher channel 64 toward the second side welding electrode 45.

[0027] Specifically, the nut 12 is conveyed from top to bottom via the second side feeding track 62 and falls into the second side pushing channel 64 via the second side feeding channel 63. When the clamping seat 4 moves the workpiece 11 to the corresponding station of the second side welding mechanism, the second side pushing shell 69 slides along the X-axis in the direction of the placement pit 43, causing the second side pushing electrode 65 to extend out of the second side pushing channel 64, pushing the nut 12 in the channel toward the second side welding electrode 45 on the other side wall of the placement pit 43, so that the nut 12 is tightly attached to the vertical inner wall surface of the other side of the workpiece 11. After the second side pushing electrode 65 and the second side welding electrode 45 are energized, a welding circuit is formed, completing the resistance welding of the nut 12 on this side to the inner wall of the workpiece 11.

[0028] This embodiment describes an automated welding fixture for a universal nut 12 for multi-specification stamping parts. A second-side return spring 66 is provided between the second-side pusher shell 69 and the second-side feed shell 61. The second-side pusher shell 69 is provided with a second-side drive rod 67, which extends along the X-axis. The second-side drive rod 67 slides through the second-side feed shell 61. The second-side drive rod 67 is rotatably equipped with a second-side roller 68. The top of the clamping seat 4 is provided with a second-side guide block. Both sides of the second-side guide block are provided with second-side abutment inclined surfaces 471 that cooperate with the second-side roller 68.

[0029] Specifically, as the clamping seat 4 moves along the Y-axis, the second guide block moves synchronously with the clamping seat 4. After the second side of the end of the second guide block abuts against the inclined surface 471 and contacts the second roller 68, it gradually squeezes the second roller 68, causing the second drive rod 67 to slide along the X-axis towards the other side of the placement recess 43. This, in turn, pushes the second pusher shell 69 to compress the second return spring 66 and extend it, realizing the push welding action on that side. When the clamping seat 4 continues to move and separates the second guide block from the second roller 68, the second return spring 66 releases its elastic force, driving the second pusher shell 69. The second-side drive rod 67 and the second-side roller 68 are reset, and the second-side push channel 64 is reconnected with the second-side feeding channel 63. The next nut 12 falls into the push channel to wait for the next welding. Since the second-side guide block is provided with the second-side abutment slope 471 on both sides, the push welding action can be triggered when the clamping seat 4 moves forward and backward through this station. In this embodiment, the linear movement of the clamping seat 4 itself is used as the power input. The Y-axis movement is converted into the X-axis push motion through the cooperation of the second-side abutment slope 471 and the second-side roller 68. There is no need to configure additional independent drive components such as cylinders and motors.

[0030] This embodiment describes an automated welding fixture for a universal nut 12 for multi-specification stamping parts. The clamping seat 4 has bottom welding channels 48 at the bottom of both the first placement platform 41 and the second placement platform 42. The bottom welding channels 48 are movably equipped with sliding columns 481. The top of the sliding columns 481 is equipped with a bottom pushing electrode 482. The bottom of the sliding columns 481 protrudes from the bottom of the clamping seat 4. A first bottom return spring 483 is provided between the bottom of the sliding columns 481 and the clamping seat 4. A first bottom roller 484 is rotatably provided at the bottom of the sliding columns 481.

[0031] Specifically, the sliding column 481 can move vertically up and down within the bottom welding channel 48. Under normal conditions, the first bottom return spring 483 pushes the sliding column 481 downward, causing the bottom pusher electrode 482 to be housed within the bottom welding channel 48. When the clamping seat 4 moves to the bottom welding position, the first bottom roller 484 contacts the first top block 21 or the second top block 22 below. The first top block 21 or the second top block 22 lifts the first bottom roller 484 upward, causing the sliding column 481 and the bottom pusher electrode 482 to rise synchronously, pushing the nut 12 in the bottom welding channel 48 upward and pressing it against the bottom surface of the horizontal arm of the workpiece 11. After the bottom pusher electrode 482 is energized with the bottom welding electrode above, a welding circuit is formed, completing the resistance welding of the nut 12 and the bottom of the horizontal arm of the workpiece 11. After the clamping seat 4 is removed, the first bottom return spring 483 drives the sliding column 481, the bottom pusher electrode 482, and the first bottom roller 484 to descend and reset.

[0032] This embodiment describes an automated welding fixture for a universal nut 12 for multi-specification stamping parts. The clamping base 4 has bottom push channels 49 extending along the X-axis at both the first placement platform 41 and the second placement platform 42. The inner side of the bottom push channel 49 communicates with the top of the bottom welding channel 48. A push rod 491 is slidably provided on the outer side of the bottom push channel 49 along the X-axis. A second bottom return spring 492 is provided between the end of the push rod 491 near the bottom welding channel 48 and the clamping base 4. A second bottom roller 493 is rotatably provided on the end of the push rod 491 away from the bottom welding channel 48. A permanent magnet 494 is provided on the outer side of the bottom push channel 49.

[0033] Specifically, when the clamping seat 4 moves to the corresponding position of the bottom feeding track, the nut 12 output from the bottom feeding track falls to the outer end of the bottom pushing channel 49. The permanent magnet 494 generates a magnetic attraction force on the nut 12, which stably limits the nut 12 to the outside of the bottom pushing channel 49, preventing the nut 12 from shifting or falling off. When the clamping seat 4 continues to move so that the second bottom roller 493 contacts the bottom abutting inclined surface 32 of the drive block 31, the bottom abutting inclined surface 32 squeezes the second bottom roller 493, causing the push rod 491 to slide along the X-axis in the direction of the bottom welding channel 48, compressing the second bottom return spring 492. At the same time, the push rod 491 pushes the nut 12 adsorbed on the outside inward along the bottom pushing channel 49 to the top of the bottom welding channel 48, waiting for the bottom pushing electrode 482 to be lifted for welding. When the push rod 491 resets, the second bottom return spring 492 releases its elastic force, causing the push rod 491 and the second bottom roller 493 to return to the initial position.

[0034] The automated welding fixture for a universal nut 12 for multi-specification stamping parts described in this embodiment includes a bottom welding mechanism comprising a first bottom welding electrode 71, a first bottom feeding track 72, a second bottom welding electrode 73, and a second bottom feeding track 74 arranged sequentially along the Y-axis. The first bottom feeding track 72 and the second bottom feeding track 74 are respectively installed on the top plate 3; the first bottom welding electrode 71 and the second bottom welding electrode 73 are respectively slidably installed at the bottom of the top plate 3; a third bottom return spring is provided between the first bottom welding electrode 71 and the top plate 3 and between the second bottom welding electrode 73 and the top plate 3. The base plate 2 is provided with a first top block 21 and a second top block 22 that cooperate with the first bottom roller 484; the first top block 21 is located at the bottom of the first bottom welding electrode 71; the second top block 22 is located at the bottom of the second bottom welding electrode 73; The bottom of the top plate 3 is provided with a driving block 31; both sides of the driving block 31 are provided with bottom abutment slopes 32 that cooperate with the second bottom roller 493; the driving block 31 is located between the first bottom feeding track 72 and the second bottom welding electrode 73.

[0035] Specifically, when the clamping seat 4 moves forward along the Y-axis, it first passes the first bottom welding electrode 71 station. At this time, there is no nut 12 in the bottom welding channel 48, and no welding action is performed. Then it passes the first bottom feeding track 72 station, where the permanent magnet 494 attracts the nut 12 that falls from the first bottom feeding track 72 to the outside of the bottom pushing channel 49. It continues to move past the drive block 31 station, where the bottom of the drive block 31 abuts against the inclined surface 32 and squeezes the second bottom roller 493. The push rod 491 pushes the nut 12 into the bottom welding channel 48. Then the clamping seat 4 moves to the second bottom welding electrode 73 station. The second bottom welding electrode 73 abuts against the top surface of the horizontal arm of the workpiece 11 under the action of the third bottom return spring. At the same time, the second top block 22 lifts the first bottom roller 484, which drives the bottom pushing electrode 482 to rise and press the nut 12 against the bottom surface of the horizontal arm of the workpiece 11. The bottom nut 12 is then welded by energizing. When the clamping seat 4 moves in the opposite direction along the Y-axis, it first passes the second bottom welding electrode 73 station. At this time, there is no nut 12 in the bottom welding channel 48, and no welding action is performed. Then it passes the second bottom feeding track 74 station, where the permanent magnet 494 attracts the nut 12 that falls from the second bottom feeding track 74. It continues to move past the drive block 31 station, where the bottom abutment inclined surface 32 on the other side of the drive block 31 squeezes the second bottom roller 493, and the push rod 491 pushes the nut 12 into the bottom welding channel 48. Then the clamping seat 4 moves to the first bottom welding electrode 71 station, where the first bottom welding electrode 71 abuts against the top surface of the workpiece 11, and the first top block 21 lifts the bottom pusher electrode 482 to complete the welding.

[0036] This embodiment adopts a symmetrical layout of double-bottom welding electrodes and double-bottom feeding tracks, combined with the bidirectional inclined structure of the drive block 31, so that the feeding and welding operations of the bottom nut 12 can be completed in both forward and reverse strokes of the clamping seat 4, eliminating the return stroke and improving the utilization rate of the equipment; in addition, the third bottom return spring can make the bottom welding electrode adaptively press the top surface of the workpiece 11, compensate for the thickness tolerance of the workpiece 11, and ensure stable welding pressure.

[0037] The automated welding fixture for a universal nut 12 for multi-specification stamping parts described in this embodiment includes a base plate 2 with a linear module 8 extending along the Y-axis; the output end of the linear module 8 is connected to the clamping seat 4.

[0038] Specifically, the linear module 8 is fixedly installed on the base plate 2 along the Y-axis direction, and its output end is rigidly connected to the clamping seat 4. By controlling the forward and reverse rotation and stroke of the linear module 8, the clamping seat 4 is driven to reciprocate linearly along the Y-axis on the base plate 2, stopping or passing through each welding station in sequence to complete the side wall welding, bottom feeding, bottom welding, and unloading processes of the workpiece 11.

[0039] This embodiment describes an automated welding fixture for a universal nut 12 for multi-specification stamping parts. One end of the base plate 2 along the Y-axis is provided with a first discharge block 23 that mates with a first bottom roller 484; the other end of the base plate 2 along the Y-axis is provided with a second discharge block 24 that mates with the first bottom roller 484; the top plate 3 is provided with a first notch 33 on the top of the first discharge block 23; and the top plate 3 is provided with a second notch 34 on the top of the second discharge block 24.

[0040] Specifically, when the clamping seat 4 moves forward to the position of the second discharge block 24 at the other end of the Y-axis, the second discharge block 24 lifts the first bottom roller 484 upward, driving the bottom pusher electrode 482 to rise, directly lifting the workpiece 11 that has completed all welding upward from the first placement platform 41 and the second placement platform 42, and detaching it from the positioning surface of the clamping seat 4; the second notch 34 set at the corresponding position of the top plate 3 provides a wide operating space, and the operator can quickly take out the finished workpiece 11 from the second notch 34 and place a new workpiece 11 to be processed; similarly, when the clamping seat 4 moves in the opposite direction to the position of the first discharge block 23, the first discharge block 23 lifts the bottom pusher electrode 482 to push out the workpiece 11, and the operator can complete the picking and placing operation from the first notch 33.

[0041] Finally, 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 the scope of protection of the present invention. 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 essence and scope of the technical solutions of the present invention.

Claims

1. An automated welding fixture for a universal nut (12) for multi-specification stamped parts, characterized in that: It includes a base plate (2) and a top plate (3) disposed on the top of the base plate (2); the base plate (2) is provided with a clamping seat (4) sliding along the Y-axis direction; The top plate (3) is provided with a first side welding mechanism, a second side welding mechanism and a bottom welding mechanism arranged sequentially along the Y-axis direction; The top of the clamping seat (4) is provided with a first placement platform (41) and a second placement platform (42) along the X-axis direction; the clamping seat (4) is provided with a placement recess (43) between the first placement platform (41) and the second placement platform (42).

2. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 1, characterized in that: The first side welding mechanism includes a first side feeding shell (51) located at the bottom of the top plate (3) and a first side feeding track (52) located at the top of the top plate (3); the bottom of the first side feeding shell (51) is provided with a first side feeding channel (53) communicating with the bottom of the first side feeding track (52); the bottom of the first side feeding shell (51) is provided with a first side pushing channel (54) extending along the X-axis direction; the bottom of the first side pushing channel (54) is connected to the bottom of the first side feeding channel (53); The first side welding mechanism further includes a first side pusher shell (59) that is slidably disposed at the bottom of the top plate (3) along the X-axis direction; the first side pusher shell (59) is provided with a first side pusher electrode (55); the first side pusher electrode (55) is movably disposed in the first side pusher channel (54); the clamping seat (4) is provided with a first side welding electrode (44) on one side wall of the placement pit (43) along the X-axis direction; the first side pusher electrode (55) is used to push the nut (12) of the first side pusher channel (54) toward the first side welding electrode (44).

3. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 2, characterized in that: A first-side return spring (56) is provided between the first-side pusher shell (59) and the first-side feeder shell (51); the first-side pusher shell (59) is provided with a first-side drive rod (57); the first-side drive rod (57) extends along the X-axis; the first-side drive rod (57) slides through the first-side feeder shell (51); the first-side drive rod (57) is rotatably provided with a first-side roller (58); the top of the clamping seat (4) is provided with a first-side guide block; both sides of the first-side guide block are provided with a first-side abutment slope (461) that cooperates with the first-side roller (58).

4. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 1, characterized in that: The second side welding mechanism includes a second side feeding shell (61) located at the bottom of the top plate (3) and a second side feeding track (62) located at the top of the top plate (3); the bottom of the second side feeding shell (61) is provided with a second side feeding channel (63) communicating with the bottom of the second side feeding track (62); the bottom of the second side feeding shell (61) is provided with a second side pushing channel (64) extending along the X-axis; the bottom of the second side pushing channel (64) is connected to the bottom of the second side feeding channel (63); The second side welding mechanism also includes a second side pusher shell (69) that is slidably disposed at the bottom of the top plate (3) along the X-axis direction; the second side pusher shell (69) is provided with a second side pusher electrode (65); the second side pusher electrode (65) is movably disposed in the second side pusher channel (64); the clamping seat (4) is provided with a second side welding electrode (45) on the other side wall of the placement pit (43) along the X-axis direction; the second side pusher electrode (65) is used to push the nut (12) of the second side pusher channel (64) toward the second side welding electrode (45).

5. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 4, characterized in that: A second-side return spring (66) is provided between the second-side pusher shell (69) and the second-side feed shell (61); the second-side pusher shell (69) is provided with a second-side drive rod (67); the second-side drive rod (67) extends along the X-axis; the second-side drive rod (67) slides through the second-side feed shell (61); the second-side drive rod (67) is rotatably provided with a second-side roller (68); the top of the clamping seat (4) is provided with a second-side guide block; both sides of the second-side guide block are provided with a second-side abutment slope (471) that cooperates with the second-side roller (68).

6. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 1, characterized in that: The clamping seat (4) is provided with bottom welding channels (48) at the bottom of the first placement platform (41) and the bottom of the second placement platform (42); the bottom welding channel (48) is provided with a sliding column (481) that moves up and down; the top of the sliding column (481) is provided with a bottom pushing electrode (482); the bottom of the sliding column (481) protrudes from the bottom of the clamping seat (4); a first bottom return spring (483) is provided between the bottom of the sliding column (481) and the clamping seat (4); the bottom of the sliding column (481) is provided with a first bottom roller (484) that rotates.

7. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 6, characterized in that: The clamping seat (4) is provided with a bottom push channel (49) extending along the X-axis at both the first placement platform (41) and the second placement platform (42); the inner side of the bottom push channel (49) is connected to the top of the bottom welding channel (48); a push rod (491) is slidably provided on the outer side of the bottom push channel (49) along the X-axis; a second bottom return spring (492) is provided between the end of the push rod (491) near the bottom welding channel (48) and the clamping seat (4); a second bottom roller (493) is rotatably provided on the end of the push rod (491) away from the bottom welding channel (48); a permanent magnet (494) is provided on the outer side of the bottom push channel (49).

8. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 7, characterized in that: The bottom welding mechanism includes a first bottom welding electrode (71), a first bottom feeding track (72), a second bottom welding electrode (73), and a second bottom feeding track (74) arranged sequentially along the Y-axis direction; The first bottom feeding track (72) and the second bottom feeding track (74) are respectively installed on the top plate (3); the first bottom welding electrode (71) and the second bottom welding electrode (73) are respectively slidably installed at the bottom of the top plate (3); a third bottom return spring is provided between the first bottom welding electrode (71) and the top plate (3) and between the second bottom welding electrode (73) and the top plate (3); The base plate (2) is provided with a first top block (21) and a second top block (22) that cooperate with the first bottom roller (484); the first top block (21) is located at the bottom of the first bottom welding electrode (71); the second top block (22) is located at the bottom of the second bottom welding electrode (73); The bottom of the top plate (3) is provided with a driving block (31); both sides of the driving block (31) are provided with bottom abutment slopes (32) that cooperate with the second bottom roller (493); the driving block (31) is located between the first bottom feeding track (72) and the second bottom welding electrode (73).

9. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 1, characterized in that: The base plate (2) is provided with a linear module (8) extending along the Y-axis direction; the output end of the linear module (8) is connected to the clamping seat (4).

10. The automated welding fixture for a universal nut (12) for multi-specification stamped parts according to claim 6, characterized in that: The bottom plate (2) has a first discharge block (23) that cooperates with the first bottom roller (484) at one end along the Y-axis; the bottom plate (2) has a second discharge block (24) that cooperates with the first bottom roller (484) at the other end along the Y-axis; the top plate (3) has a first notch (33) at the top of the first discharge block (23); the top plate (3) has a second notch (34) at the top of the second discharge block (24).

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