Stud press mechanism

Abstract

This invention discloses a welding stud punching mechanism, comprising a main disc and a secondary disc, which rotate synchronously in opposite directions. The workpiece is detachably mounted on the main disc. A protrusion is located on the annular side surface of the secondary disc. The protrusion and the workpiece rotate on the same horizontal plane, with the protrusion's movement trajectory forming a first circle and the workpiece's movement trajectory forming a second circle. An intersection area is provided between the first and second circles. The mechanism includes a limiting block, a piston block, and an interference component. The piston block reciprocates vertically, the limiting block reciprocates horizontally, and the interference component transfers the kinetic energy of the piston block to the limiting block. The beneficial effects of this invention are that it changes the existing stamping method; the main and secondary discs punch holes at the workpiece ends through extrusion, reducing energy impact and effectively reducing vibration and noise. The piston block adjusts the distance between the limiting block and the intersection area, thus accommodating workpieces of different lengths. The left and right chucks allow for clamping workpieces of different diameters, improving compatibility.

Description

Technical Field

[0001] This invention relates to the field of welding stud punching technology, and more specifically, to welding stud punching mechanism. Background Technology

[0002] The protrusion at the end of the welding stud is an "energy trigger" specifically designed for capacitive discharge stud welding. Its purpose is to precisely and controllably convert a large amount of electrical energy into the initial heat energy required to start the welding arc. Existing protrusion processing technology, such as the literature with application number CN201911256014.9, involves processing the corresponding welding stud end face using a punch during the drilling process. Although this process can be completed, it has the following drawbacks: 1. Because it uses a punching method for drilling, this method generates a lot of vibration and noise, resulting in low processing efficiency; 2. When the length and diameter of the workpiece change, it cannot stably fix and transfer the workpiece, resulting in poor compatibility. Summary of the Invention

[0003] To address the above deficiencies, this invention provides a welding stud pressing mechanism to solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The stud punching mechanism includes a worktable, a workpiece, studs, and a drive motor, and also includes: The main disk and the auxiliary disk rotate synchronously in opposite directions. The workpiece is detachably mounted on the main disk. The protrusion is located on the annular side surface of the auxiliary disk. The protrusion and the workpiece rotate on the same horizontal plane. The movement trajectory of the protrusion is a first circle, and the movement trajectory of the workpiece is a second circle. There is an intersection area between the first circle and the second circle. When the protrusion and the workpiece pass through the intersection area, the protrusion squeezes the workpiece, and a squeezing groove is formed at the center of the workpiece end face. The system consists of a limiting block, a piston block, and an interference component. The piston block reciprocates vertically, the limiting block reciprocates horizontally, and the interference component transfers the kinetic energy of the piston block to the limiting block, adjusting the distance between the limiting block and the intersection area. The left chuck and the right chuck together form a clamping part. Multiple clamping parts are arranged in a ring on the main plate. The clamping parts are used to fix the workpiece.

[0005] Furthermore, a bearing assembly one is installed on the upper surface of the worktable, a transmission shaft one is installed inside the bearing assembly one, a main disc is installed on the transmission shaft one, a bearing assembly two is installed on the upper surface of the worktable, a transmission shaft two is installed inside the bearing assembly two, a secondary disc is installed on the transmission shaft two, and meshing gears are installed at the lower ends of the transmission shaft one and the transmission shaft two, and the output end of the drive motor meshes with the gears.

[0006] Furthermore, the drive shaft is a hollow structure, and the piston block is located inside the drive shaft. A linear motor is installed at the lower end of the drive shaft. The linear motor is also a hollow structure, and its telescopic end is connected to the piston block. The interference component includes a T-shaped groove on the side wall of the piston block, with the angle between the extension line of the T-shaped groove and the axis of the piston block ranging from 5 to 10 degrees. A rectangular hole is opened on one side wall of the drive shaft, and a connecting rod is installed inside the rectangular hole. A T-shaped block is installed at one end of the connecting rod, and the T-shaped block is slidably connected to the T-shaped groove. A limiting block is installed at the other end of the connecting rod.

[0007] Furthermore, a hydraulic rod is installed on the upper surface of the main plate. There are multiple pairs of hydraulic rods, and the left and right chucks are installed on the hydraulic rods. The extension and retraction of the hydraulic rods drive the left and right chucks to move in opposite directions or away from each other.

[0008] Furthermore, a trapezoidal protrusion 1 is provided below the left chuck, and a trapezoidal protrusion 2 is provided below the right chuck, with the trapezoidal protrusion 1 and trapezoidal protrusion 2 arranged intersectingly; a feeding port is opened on the main plate, and the feeding port is set corresponding to the workpiece.

[0009] Furthermore, the main disk has an annular protrusion on its annular sidewall and an annular groove on its side surface, with the annular protrusion inserted into the annular groove.

[0010] Furthermore, the piston block is provided with a central hole, which forms a channel with the linear motor. A rotary sealing valve is provided at the lower end of the linear motor, and an oil pipe is provided between the rotary sealing valve and the hydraulic rod, passing through the channel. An electric slip ring is provided below the worktable.

[0011] Furthermore, the cross-section of the protrusion is hemispherical, and the cross-section of the extrusion groove is also hemispherical.

[0012] Furthermore, the cross-section of the protrusion is wedge-shaped, and the cross-section of the extrusion groove is quadrilateral.

[0013] The beneficial effects of this invention are: changing the existing stamping method, the main and auxiliary discs punch holes at the end of the workpiece by extrusion, reducing energy impact, effectively reducing vibration and noise, and increasing the upper limit of processing efficiency; The distance between the limiting block and the intersection area can be adjusted by the action of the piston block, thus making it suitable for workpieces of different lengths. By setting the left and right chucks, workpieces of different sizes can be clamped, improving compatibility. By rotating the sealing valve and setting the electric slip ring, the problem of infinite winding can be solved, and the purpose of adjustment without stopping the machine can be achieved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the welding stud pressing mechanism described in this invention; Figure 2 This is a top view of the workbench; Figure 3 This is a schematic diagram of the longitudinal section of the piston block; Figure 4 This is a top view of the left and right clamps; Figure 5 This is a top view of the cross-section of drive shaft one; Figure 6 This is a schematic diagram of a ring-shaped protrusion; Figure 7 This is a schematic diagram of the workpiece loading process; Figure 8 This is a schematic diagram of the workpiece clamping process; Figure 9 This is a schematic diagram of the workpiece cutting process; Figure 10 This is a schematic diagram of the intersection region; In the diagram: 1. Worktable; 2. Workpiece; 3. Protrusion; 4. Drive motor; 5. Main disc; 6. Sub-disc; 7. First circle; 8. Second circle; 9. Intersection area; 10. Extrusion groove; 11. Limiting block; 12. Piston block; 13. Left chuck; 14. Right chuck; 21. Bearing assembly one; 22. Drive shaft one; 23. Bearing assembly two; 24. Drive shaft two; 25. Gear; 31. Linear motor; 32. T-slot; 33. Rectangular hole; 34. Connecting rod; 35. T-block; 41. Hydraulic rod; 51. Trapezoidal protrusion one; 52. Trapezoidal protrusion two; 53. Discharge port; 61. Annular protrusion; 62. Annular groove; 71. Center hole; 72. Channel one; 73. Rotary sealing valve; 74. Oil pipe; 75. Electric slip ring. Detailed Implementation

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] This application provides a stud pressing mechanism; please refer to [reference needed]. Figures 1-10 It includes a worktable 1, a workpiece 2, a protrusion 3, and a drive motor 4, and also includes: The main disk 5 and the auxiliary disk 6 rotate synchronously towards each other. The workpiece 2 is detachably mounted on the main disk 5. The protrusion 3 is located on the annular side surface of the auxiliary disk 6. The protrusion 3 and the workpiece 2 rotate on the same horizontal plane. The movement trajectory of the protrusion 3 is the first circle 7, and the movement trajectory of the workpiece 2 is the second circle 8. An intersection area 9 is provided between the first circle 7 and the second circle 8. When the protrusion 3 and the workpiece 2 pass through the intersection area 9, the protrusion 3 squeezes the workpiece 2, and a squeezing groove 10 is formed at the center of the end face of the workpiece 2. The components include a limiting block 11, a piston block 12, and an interference component. The piston block 12 reciprocates vertically, the limiting block 11 reciprocates horizontally, and the interference component transfers the kinetic energy of the piston block 12 to the limiting block 11, thereby adjusting the distance between the limiting block 11 and the intersection area 9. Left chuck 13 and right chuck 14, one left chuck 13 and one right chuck 14 form a clamping part, and multiple clamping parts are provided and arranged in a ring on the main disk 5. The clamping part is used to fix the workpiece 2.

[0017] In practical applications, the pre-process for pressing the welding studs is material feeding, and the post-process for pressing the welding studs is aluminum ball riveting. The material feeding and aluminum ball riveting processes will be applied for separately; this application only addresses the improvement of the welding stud pressing process. Step 1; The rotation of the drive motor 4 can drive the main disk 5 and the auxiliary disk 6 to rotate synchronously in opposite directions. The external screening machine moves the workpiece 2 from top to bottom to the position between the left chuck 13 and the right chuck 14 to achieve feeding. Step Two; The left chuck 13 and the right chuck 14 move in opposite directions to clamp the workpiece 2, and the limiting block 11 plays a radial limiting role. When the protrusion 3 and the workpiece 2 move to the intersection area 9, the protrusion 3 squeezes the workpiece 2, and the extrusion groove 10 is formed at the center of the end face of the workpiece 2 to realize the pressing operation. Step 3; While the main disk 5 and the auxiliary disk 6 are working, the piston block 12 can move up and down. The up and down movement of the piston block 12 is transmitted through the interference component, which causes the limiting block 11 to move in the horizontal direction, thereby adjusting the distance between the limiting block 11 and the intersection area 9. This is suitable for workpieces 2 of different lengths and improves equipment compatibility. Step four; While the main disk 5 and the auxiliary disk 6 are working, controlling the left chuck 13 and the right chuck 14 to move in opposite directions can achieve the clamping of workpieces 2 of different diameters. The cross-sections of the left chuck 13 and the right chuck 14 are V-shaped. When clamping, the workpiece 2 is centered, so that even if the workpieces 2 of different diameters are located on the same straight line. like Figure 7 As shown, at this time, the distance between the upper ends of the left chuck 13 and the right chuck 14 is such that the workpiece 2 can pass through, and the distance between the lower ends of the left chuck 13 and the right chuck 14 is such that the workpiece 2 is just stuck. At this time, the loading operation can be performed. After the loading is completed, the workpiece 2 is moved to the intersection area 9. like Figure 8 As shown, at this time, the left chuck 13 and the right chuck 14 clamp the workpiece 2, and the pressing operation can be performed. like Figure 9 As shown, at this time, the distance between the lower ends of the left chuck 13 and the right chuck 14 is greater than the diameter of the workpiece 2, and the unloading operation can be performed.

[0018] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The upper surface of the worktable 1 is equipped with a bearing assembly 21, and a drive shaft 22 is installed inside the bearing assembly 21. The main disk 5 is installed on the drive shaft 22. The upper surface of the worktable 1 is equipped with a bearing assembly 23, and a drive shaft 24 is installed inside the bearing assembly 23. The auxiliary disk 6 is installed on the drive shaft 24. The lower ends of the drive shaft 22 and the drive shaft 24 are each equipped with meshing gears 25. The output end of the drive motor 4 meshes with the gears 25.

[0019] In practical applications, the main disk 5 is made to rotate stably by the setting of bearing group 21 and transmission shaft 22, and the auxiliary disk 6 is made to rotate stably by the setting of bearing group 23 and transmission shaft 24. The drive motor 4 rotates and drives one of the gears 25 to rotate. The two gears 25 can rotate synchronously in opposite directions by meshing with each other.

[0020] Reference Figures 1 to 5 The drive shaft 22 is a hollow structure, and the piston block 12 is located inside the drive shaft 22. A linear motor 31 is installed at the lower end of the drive shaft 22. The linear motor 31 is a hollow structure, and the telescopic end of the linear motor 31 is connected to the piston block 12. The interference component includes a T-shaped groove 32 opened on the side wall of the piston block 12. The angle between the extension line of the T-shaped groove 32 and the axis of the piston block 12 is in the range of 5 to 10 degrees. A rectangular hole 33 is opened on the side wall of the drive shaft 22. A connecting rod 34 is installed in the rectangular hole 33. A T-shaped block 35 is installed at one end of the connecting rod 34. The T-shaped block 35 is slidably connected to the T-shaped groove 32. A limiting block 11 is installed at the other end of the connecting rod 34.

[0021] In practical applications, two linear motors 31 can be set (the linear motors 31 do not have to be hollow structures) and set on both sides of the lower end of the transmission shaft 22. A gap is provided at the axis of the transmission shaft 22 to facilitate the passage of the oil pipe 74 and the wire. When the linear motor 31 extends, it drives the piston block 12 to move upward. The T-slot 32 drives the T-block 35 to move in the radial direction of the piston block 12. Through the setting of the rectangular hole 33, the connecting rod 34 can only move in the radial direction of the piston block 12 and the main disk 5. Through the slope of the T-slot 32, the T-block 35, the connecting rod 34 and the limiting block 11 move towards the edge of the main disk 5. At this time, the distance between the limiting block 11 and the intersection area 9 is shorter, which is suitable for workpieces 2 with shorter lengths. When the linear motor 31 shortens, the T-block 35, connecting rod 34 and limiting block 11 move toward the center of the main disk 5 through the slope of the T-slot 32. At this time, the distance between the limiting block 11 and the intersection area 9 is longer, which is suitable for workpieces 2 with longer lengths.

[0022] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8and Figure 9 The upper surface of the main plate 5 is equipped with a hydraulic rod 41. The hydraulic rod 41 has multiple pairs. The left clamp 13 and the right clamp 14 are mounted on the hydraulic rod 41. The extension and retraction of the hydraulic rod 41 drives the left clamp 13 and the right clamp 14 to move in opposite directions or away from each other.

[0023] In practical applications, when the hydraulic rod 41 extends, it drives the left chuck 13 and the right chuck 14 to move in opposite directions. The extension amount of the hydraulic rod 41 can be controlled according to the actual diameter of the workpiece 2.

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9 A trapezoidal protrusion 51 is provided below the left chuck 13, and a trapezoidal protrusion 52 is provided below the right chuck 14. The trapezoidal protrusion 51 and the trapezoidal protrusion 52 are arranged intersectingly. A feed port 53 is opened on the main plate 5, and the feed port 53 is arranged corresponding to the workpiece 2.

[0025] In practical applications, by setting trapezoidal protrusion 1 51 and trapezoidal protrusion 2 52, the gap at the upper end of the left clamp 13 and the right clamp 14 is larger than the gap at the lower end. like Figure 7 As shown, at this time, the distance between the upper ends of the left chuck 13 and the right chuck 14 is such that the workpiece 2 can pass through, and the distance between the lower ends of the left chuck 13 and the right chuck 14 is such that the workpiece 2 is just stuck. At this time, the loading operation can be performed. After the loading is completed, the workpiece 2 is moved to the intersection area 9. like Figure 8 As shown, at this time, the left chuck 13 and the right chuck 14 clamp the workpiece 2, and the pressing operation can be performed. like Figure 9 As shown, at this time, the distance between the lower ends of the left chuck 13 and the right chuck 14 is greater than the diameter of the workpiece 2, and the unloading operation can be performed; During unloading, the left chuck 13 and the right chuck 14 are controlled to move in opposite directions. Under the action of gravity, the material is unloaded by passing downward through the unloading port 53.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The main disk 5 has an annular protrusion 61 on its annular sidewall, and the secondary disk 6 has an annular groove 62 on its side surface, with the annular protrusion 61 inserted into the annular groove 62.

[0027] In practical applications, the annular protrusion 61 and the annular groove 62 are in a clearance fit, which can improve the stability of operation between the main disk 5 and the auxiliary disk 6.

[0028] Reference Figure 1, Figure 2 , Figure 3 and Figure 4 The piston block 12 is provided with a central hole 71, and a channel 72 is formed between the central hole 71 and the linear motor 31. A rotary sealing valve 73 is provided at the lower end of the linear motor 31. An oil pipe 74 is provided between the rotary sealing valve 73 and the hydraulic rod 41, and the oil pipe 74 passes through the channel 72. An electric slip ring 75 is provided below the worktable 1.

[0029] In practical applications, one end of the oil pipe 74 is connected to an external oil pump, and the other end of the oil pipe 74 passes through channel 1 72 and is connected to the clamping part. The oil pipe 74 is equipped with multiple independent control valves, which can control the working state of each clamping part. Through the setting of the electric slip ring 75 and the rotary sealing valve 73, the main plate 5 is rotated while the circuit and oil circuit are unobstructed.

[0030] Example 1 of convex point 3, see below Figure 1 , Figure 2 , Figure 3 and Figure 4 The cross-section of protrusion 3 is hemispherical, and the cross-section of extrusion groove 10 is hemispherical.

[0031] In practical applications, depending on the actual working conditions, the cross-section of the protrusion 3 is hemispherical, and the cross-section of the extrusion groove 10 is also hemispherical. In the second embodiment of the protrusion 3, the cross-section of the protrusion 3 is wedge-shaped, and the cross-section of the extrusion groove 10 is quadrilateral. The cross-section of the extrusion groove 10 is quadrilateral, and the shape of the extrusion groove 10 is more conducive to the anchoring of the aluminum ball.

Claims

1. A stud punching mechanism, comprising a worktable (1), a workpiece (2), a protrusion (3), and a drive motor (4), characterized in that, Also includes: The main disk (5) and the auxiliary disk (6) rotate synchronously towards each other. The workpiece (2) is detachably mounted on the main disk (5). The protrusion (3) is mounted on the annular side surface of the auxiliary disk (6). The protrusion (3) and the workpiece (2) rotate on the same horizontal plane. The movement trajectory of the protrusion (3) is the first circle (7), and the movement trajectory of the workpiece (2) is the second circle (8). An intersection area (9) is provided between the first circle (7) and the second circle (8). When the protrusion (3) and the workpiece (2) pass through the intersection area (9), the protrusion (3) squeezes the workpiece (2), and an extrusion groove (10) is formed at the center of the end face of the workpiece (2). The piston block (12) and the interference component are: the piston block (12) moves back and forth in the vertical direction, the piston block (12) moves back and forth in the horizontal direction, and the interference component transfers the kinetic energy of the piston block (12) to the piston block (11) to adjust the distance between the piston block (11) and the intersection area (9). The left chuck (13) and the right chuck (14) form a clamping part. Multiple clamping parts are provided and arranged in a ring on the main plate (5). The clamping parts are used to fix the workpiece (2).

2. The stud pressing mechanism according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with a bearing assembly (21), and a drive shaft (22) is installed inside the bearing assembly (21). The main disk (5) is installed on the drive shaft (22). The upper surface of the workbench (1) is equipped with a bearing assembly (23), and a drive shaft (24) is installed inside the bearing assembly (23). The auxiliary disk (6) is installed on the drive shaft (24). The lower ends of the drive shaft (22) and the drive shaft (24) are each equipped with meshing gears (25). The output end of the drive motor (4) meshes with the gears (25).

3. The stud pressing mechanism according to claim 2, characterized in that, The drive shaft (22) is hollow, the piston block (12) is located inside the drive shaft (22), and a linear motor (31) is installed at the lower end of the drive shaft (22). The linear motor (31) is hollow, and the extension end of the linear motor (31) is connected to the piston block (12). The interference component includes a T-shaped groove (32) opened on the side wall of the piston block (12). The angle between the extension line of the T-shaped groove (32) and the axis of the piston block (12) is between 5 and 10 degrees. A rectangular hole (33) is opened on the side wall of the drive shaft (22). A connecting rod (34) is installed in the rectangular hole (33). A T-shaped block (35) is installed at one end of the connecting rod (34). The T-shaped block (35) is slidably connected to the T-shaped groove (32). A limiting block (11) is installed at the other end of the connecting rod (34).

4. The stud pressing mechanism according to claim 3, characterized in that, The upper surface of the main plate (5) is equipped with a hydraulic rod (41). The hydraulic rod (41) has multiple pairs. The left clamp (13) and the right clamp (14) are installed on the hydraulic rod (41). The extension and retraction of the hydraulic rod (41) drives the left clamp (13) and the right clamp (14) to move in opposite directions or away from each other.

5. The stud pressing mechanism according to claim 4, characterized in that, A trapezoidal protrusion 1 (51) is provided below the left chuck (13), and a trapezoidal protrusion 2 (52) is provided below the right chuck (14). The trapezoidal protrusion 1 (51) and the trapezoidal protrusion 2 (52) are arranged in an intersecting manner. A feed port (53) is opened on the main plate (5), and the feed port (53) is arranged corresponding to the workpiece (2).

6. The stud pressing mechanism according to claim 5, characterized in that, The main disk (5) has an annular protrusion (61) on its annular sidewall, and the secondary disk (6) has an annular groove (62) on its side surface. The annular protrusion (61) is inserted into the annular groove (62).

7. The stud pressing mechanism according to any one of claims 3 to 6, characterized in that, The piston block (12) is provided with a central hole (71), and a channel (72) is formed between the central hole (71) and the linear motor (31). A rotary sealing valve (73) is provided at the lower end of the linear motor (31), and an oil pipe (74) is provided between the rotary sealing valve (73) and the hydraulic rod (41). The oil pipe (74) passes through the channel (72). An electric slip ring (75) is provided below the worktable (1).

8. The stud pressing mechanism according to claim 7, characterized in that, The cross-section of the protrusion (3) is hemispherical, and the cross-section of the extrusion groove (10) is hemispherical.

9. The stud pressing mechanism according to claim 7, characterized in that, The cross-section of the protrusion (3) is wedge-shaped, and the cross-section of the extrusion groove (10) is quadrilateral.

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