Rapid intelligent welding equipment and method for pot handle

Abstract

The invention discloses quick intelligent welding equipment and method for a pot handle, and relates to the technical field of automatic welding. Comprising a machine table, a supporting frame is fixed to the upper portion of the machine table, a discharging structure is arranged on the supporting frame, a fixed shaft ring is fixed to the bottom of the machine table, a fluted disc is rotationally arranged on the outer side of the fixed shaft ring, a lifting shaft is arranged in the middle of the fixed shaft ring, and the bottom of the lifting shaft is rotationally connected with the top of a lifting air cylinder; a clamping mechanism is arranged on one side of the machine table, and laser welding mechanisms are arranged on the supporting frame and the machine table. The inverted pot bodies are released at intervals through the discharging mechanism, meanwhile, handles are placed on the clamping mechanism, the pot bodies and the handles rotate synchronously, in the rotating path, the upper and lower mechanical welding mechanisms conduct laser welding at the same time, welding of the whole edge is achieved, compared with spot welding, the welding strength is improved, automatic welding can be achieved, and the production efficiency is improved. And welding is more efficient.

Description

Technical Field

[0001] This invention relates to the field of automatic welding technology, specifically to a rapid and intelligent welding device and method for cookware handles. Background Technology

[0002] Welding the cookware handle is the core process connecting the pot body and the handle. Its purpose is to give the cookware practical functionality, allowing users to safely and stably hold and stir-fry it. Precise welding ensures a strong and durable connection between the handle and the pot body, capable of withstanding various external forces during daily use; it also enhances the overall aesthetics of the cookware, making it more refined in appearance. The general process involves first precisely positioning and fixing the pot body and handle, then selecting a suitable welding method, such as resistance spot welding or laser welding, controlling the parameters to complete the welding, and finally, possibly grinding to ensure a smooth weld.

[0003] In the process of cookware production, welding equipment is needed to weld the handle and the cookware together. For example, a cookware handle welding device (patent publication number CN118720494A) includes a base plate, a main support, a welding torch, a material bucket, and a placement plate. The main support is fixed in the middle of the base plate, the welding torch is fixed on the main support, and the material bucket is fixed to one end of the base plate. The placement plate is installed inside the material bucket, and a reset rod is connected to the bottom of the placement plate. The device also includes a first feeding mechanism, a second feeding mechanism, and a discharge mechanism. The first feeding mechanism lifts the cookware to be welded, and the second feeding mechanism feeds the handle to be welded, ensuring accurate alignment between the cookware and the handle. The welding torch is then used to weld them. The discharge mechanism then transports the welded cookware to a conveyor for export. During the transport of the welded cookware, the picking bracket drives the feeding slider to move horizontally, thus automatically picking up the handle and further saving the operation time of each action.

[0004] The handle and the cookware need to be welded together to increase strength and facilitate use. The welding device mentioned above and the existing cookware handle welding can only achieve automatic positioning of the handle and the cookware and spot welding after automatic positioning. However, in daily use, there will be gaps between the spot-welded handle and the cookware, which are not easy to clean. Secondly, although spot welding is fast, the connection strength between the handle and the cookware is poor, which is not convenient for the long-term use of the cookware. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid and intelligent welding device and method for cookware handles to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid intelligent welding device for cookware handles, comprising a machine base, a support frame fixed above the machine base, a drop opening in the middle of the support frame, and several vertical railings fixed around the drop opening. The support frame has several circumferentially distributed feeding structures for intermittent feeding. A fixed shaft ring is fixed at the bottom of the machine base, and a gear disc is rotatably mounted on the outer side of the fixed shaft ring. A drive gear meshing with the gear disc is rotatably mounted on the lower surface of the machine base, and a rotary motor for driving the drive gear is installed. A lifting shaft is located in the middle of the fixed shaft ring, and the bottom of the lifting shaft is rotatably connected to the top of a lifting cylinder. The bottom of the lifting cylinder is fixed to the mounting ground by bolts. A first electromagnet is mounted at the upper end of the lifting shaft. A clamping mechanism is provided on one side of the machine base for clamping the handle before welding. Laser welding mechanisms are provided on both the support frame and the machine base for welding during the rotation of the handle and the cookware body.

[0007] Preferably, the machine base has several circumferentially distributed circular holes, and a frustum guide post is slidably disposed in the circular holes. A lifting sleeve is fixed in the middle of the frustum guide post. A vertical rod is slidably disposed inside the lifting sleeve. A rubber block is fixed at the upper end of the vertical rod, and a buffer spring is sleeved on the vertical rod. The upper and lower ends of the buffer spring abut against the rubber block and the lifting sleeve, respectively. A fixed platform is fixed on the lower surface of the machine base, and the bottom of the vertical rod slides through the fixed platform. A rigid spring is also sleeved on the outside of the vertical rod, and the upper and lower ends of the rigid spring abut against the frustum guide post and the fixed platform, respectively. A ring is sleeved on the outside of the lifting shaft, and a connecting rod connects the ring and the vertical rod. A snap-fit ​​assembly is disposed between the ring and the lifting shaft.

[0008] Preferably, the latching assembly includes several locking tongue blocks, several circumferentially distributed telescopic holes are provided on the side of the lifting shaft, the locking tongue blocks are slidably disposed in the telescopic holes, and a push-out spring is provided on the back of the locking tongue blocks. An iron block is fixed on the locking tongue blocks, and a second electromagnet is provided at the middle position of the lifting shaft. The second electromagnet is at the same height as the iron block.

[0009] Preferably, the gear disc consists of two half discs, and a connecting flange is provided below the half disc. The two half discs are fixed by bolts. A right-angle bent rod is fixed below the half disc, and a damping block is fixed on the upper surface of one end of the right-angle bent rod. A limit groove is opened on the lifting shaft, and the end of the right-angle bent rod is inserted into the limit groove. A transverse wide groove is opened inside the upper end of the lifting shaft. A thin-neck moving disc is fixed on the lower surface of the first electromagnet, and the thin-neck moving disc is located inside the transverse wide groove.

[0010] Preferably, the clamping mechanism includes an arc-shaped track fixed to the upper surface of the machine base, an arc-shaped movable seat slidably mounted on the track, an arc-shaped long slot on the inner side of the arc-shaped movable seat, a clamping rod hinged to the arc-shaped movable seat, and a spreading spring between the clamping rod and the arc-shaped movable seat. An upper clamping block is detachably connected to the lower part of the clamping rod by bolts, and a lower clamping block is detachably connected to the upper surface of the arc-shaped movable seat by bolts. A transverse micro electric push rod is mounted on the arc-shaped movable seat to push the upper clamping rod to achieve clamping and fixing. An arc-shaped damping slide rail is fixed to the lower surface of the gear plate, and a connecting bent rod is slidably mounted on the arc-shaped damping slide rail. A moving shaft is fixed to one end of the connecting bent rod, and the moving shaft passes through the arc-shaped long slot and is fixed to the arc-shaped movable seat.

[0011] Preferably, the feeding mechanism includes a plurality of first mounting frames fixed on a support frame. The first mounting frames are evenly distributed around the circumference. A feeding shaft is rotatably mounted on the first mounting frame, and a feeding motor is used to drive the feeding shaft to rotate. Rotating plates are fixed at the upper and lower ends of the feeding shaft. Semi-circular baffles are fixed on the outer side of the rotating plates, and the upper and lower semi-circular baffles are offset from each other in the vertical direction.

[0012] Preferably, the discharge mechanism includes a conveyor fixed below the machine base, a conveyor belt is installed on the conveyor, and a lever is installed on the conveyor belt. A discharge slot is opened in the middle of the machine base, and the lever is located in the discharge slot.

[0013] Preferably, the laser welding mechanism includes a second mounting bracket fixed on a support frame. An adjusting screw is rotatably mounted inside the second mounting bracket, and an adjusting motor is mounted above the second mounting bracket to drive the adjusting screw to rotate. Two guide rods parallel to the adjusting screw are also fixed inside the second mounting bracket. Adjusting components are slidably mounted on the guide rods and are threadedly connected to the adjusting screw. Support rods are fixed on the adjusting components, and laser welding heads are mounted on the ends of the support rods.

[0014] A rapid and intelligent welding method for cookware handles includes: Obtain a grayscale image of the outer contour of the connecting flange between the handle and the pot body; Obtain the coordinates of the leftmost and rightmost contour points, and then cut the contour using the two contour point coordinates to obtain two trajectory maps respectively; Multiple coordinate points are obtained at equal intervals on the contour, and the coordinate points are connected by line segments. The difference between the coordinate points at the two ends of each line segment is calculated. Obtain the linear velocity of the pot body rotation, and calculate the longitudinal movement speed of the two tracks based on the coordinate difference between the two ends; Divide a line segment into three strokes, mark the longitudinal movement speed as the middle stroke speed, calculate the difference between the adjacent front and rear stroke speeds, calculate the acceleration of the rear stroke and the adjacent front stroke, and keep the displacement constant. Welding is performed as the pot body and handle rotate synchronously, following the obtained path and speed.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The inverted pot body is released intermittently by the feeding mechanism, while the handle is placed on the clamping mechanism. Then, the first electromagnet will attract the iron pot body and drive the pot body to rotate through the toothed plate. While the pot body rotates, the clamping mechanism rotates synchronously to keep the pot body and handle rotating synchronously. During the rotation path, the upper and lower welding mechanisms perform laser welding simultaneously to achieve welding of the entire edge. Compared with spot welding, the welding strength is improved, and automatic welding can be achieved, making welding more efficient.

[0016] Meanwhile, the wide transverse slot and narrow-neck moving plate enable the first electromagnet to move slightly laterally. When the pot body is subjected to the lateral moving thrust of the frustum guide column, it can be adjusted in time. When the lifting shaft descends to the level of the first electromagnet with the upper surface of the machine platform, the damping block just abuts against the narrow-neck moving plate, thereby locking the first electromagnet and the lifting shaft, thus achieving the rotation transmission effect. This allows for fine-tuning of the position and improves the accuracy of the welding position.

[0017] Furthermore, the semi-circular baffles support the pot body from the edge to prevent it from sagging. With the two semi-circular baffles intersecting, only one pot body is allowed to descend at a time, and the interval between descents can be controlled by the rotation speed to achieve the effect of intermittent feeding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall axonometric structure of the present invention; Figure 2 This is a schematic diagram of the overall axial structure of the present invention from another direction; Figure 3 This is a schematic diagram of the bottom structure of the present invention; Figure 4 This is a schematic diagram of the machine tool in this invention; Figure 5 This is a schematic diagram of the structure of the frustum guide post in this invention; Figure 6 This is a cross-sectional view of the guide post of the frustum in this invention. Figure 7 This is a schematic diagram of the bottom structure of the machine tool in this invention; Figure 8 This is a schematic diagram of the lower cross-sectional structure of the lifting shaft in this invention; Figure 9 This is a schematic diagram of the toothed disc structure in this invention; Figure 10 This is a schematic diagram of the upper cross-sectional structure of the lifting shaft in this invention; Figure 11 This is a schematic diagram of the clamping mechanism in this invention; Figure 12 This is a schematic diagram of the feeding mechanism in this invention; Figure 13 This is a schematic diagram of the laser cutting mechanism in this invention; Figure 14 This is a speed information planning diagram for the welding path of the present invention.

[0019] In the diagram: 1. Machine base; 2. Support frame; 3. Vertical railing; 4. Fixed shaft ring; 5. Gear plate; 6. Lifting shaft; 7. First electromagnet; 8. Drive gear; 9. Lifting cylinder; 10. Frustum guide column; 11. Lifting sleeve; 12. Vertical rod; 13. Rubber block; 14. Buffer spring; 15. Fixed platform; 16. Hard spring; 17. Ring; 18. Connecting rod; 19. Telescopic hole; 20. Locking tongue block; 21. Push-out spring; 22. Iron block; 23. Second electromagnet; 24. Half plate; 25. Connecting flange; 26. Right-angle bent rod; 27. Damping block; 28. Limiting groove; 29. ​​Horizontal wide groove; 30. 31. Necked moving disc; 32. Arc-shaped track; 33. Arc-shaped moving seat; 34. Arc-shaped long slot; 35. Connecting bent rod; 36. Arc-shaped damping slide rail; 37. Clamping rod; 38. Upper clamping block; 39. Lower clamping block; 40. Spreading spring; 41. Horizontal miniature electric push rod; 42. First mounting frame; 43. Feeding shaft; 44. Feeding motor; 45. Rotating plate; 46. Semi-ring baffle; 47. Discharge long slot; 48. Conveyor; 49. Lever; 50. Second mounting frame; 51. Adjusting screw; 52. Adjusting motor; 53. Guide rod; 54. Adjusting component; 55. Support rod; 56. Laser welding head. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-13As shown, the present invention provides a technical solution: a rapid intelligent welding device for cookware handles, including a machine base 1, a support frame 2 fixed above the machine base 1, a drop opening in the middle of the support frame 2, and several vertical railings 3 fixed around the drop opening. The support frame 2 is provided with several circumferentially distributed feeding structures for intermittent feeding. A fixed shaft ring 4 is fixed at the bottom of the machine base 1, and a gear plate 5 is rotatably arranged on the outer side of the fixed shaft ring 4. A drive gear 8 that meshes with the gear plate 5 is rotatably arranged on the lower surface of the machine base 1, and a rotary motor for driving the drive gear 8 to rotate is installed. A lifting shaft 6 is arranged in the middle of the fixed shaft ring 4, and the bottom of the lifting shaft 6 is rotatably connected to the top of the lifting cylinder 9. The bottom of the lifting cylinder 9 is fixed to the installation ground by bolts. A first electromagnet 7 is installed at the upper end of the lifting shaft 6. A clamping mechanism is provided on one side of the machine base 1 for clamping the handle before welding. A laser welding mechanism is provided on both the support frame 2 and the machine base 1 for welding during the rotation of the handle and the cookware body.

[0022] It should be noted that the inverted pot body is released intermittently by the feeding mechanism, and the handle is placed on the clamping mechanism. Then, the first electromagnet 7 will attract the iron pot body (for iron pot bodies) and drive the pot body to rotate through the toothed disc 5. While the pot body is rotating, the clamping mechanism rotates synchronously to keep the pot body and handle rotating synchronously. During the rotation path, the upper and lower welding mechanisms perform laser welding at the same time to achieve welding of the entire edge. Compared with spot welding, the welding strength is improved, and automatic welding can be achieved, making the welding more efficient.

[0023] like Figures 4-6 As shown, the machine base 1 has several evenly distributed circular holes, and a frustum guide post 10 is slidably arranged in the circular holes. A lifting sleeve 11 is fixed in the middle of the frustum guide post 10. A vertical rod 12 is slidably arranged inside the lifting sleeve 11. A rubber block 13 is fixed at the upper end of the vertical rod 12, and a buffer spring 14 is sleeved on the vertical rod 12. The upper and lower ends of the buffer spring 14 abut against the rubber block 13 and the lifting sleeve 11, respectively. A fixed platform 15 is fixed on the lower surface of the machine base 1, and the bottom of the vertical rod 12 slides through the fixed platform 15. A hard spring 16 is also sleeved on the outside of the vertical rod 12, and the upper and lower ends of the hard spring 16 abut against the frustum guide post 10 and the fixed platform 15, respectively. A ring 17 is sleeved on the outside of the lifting shaft 6, and a connecting rod 18 connects the ring 17 and the vertical rod 12. A snap-fit ​​assembly is provided between the ring 17 and the lifting shaft 6.

[0024] It should be noted that the buffer spring 14 provides support for the rubber block 13, reducing noise and scratches on the pot surface caused by impact when the pot body descends. When the lifting shaft 6 rises and the first electromagnet 7 is attached to the inside of the pot body, the locking component will be locked on the upper surface of the ring 17. Then, when descending, it drives the vertical rod 12 to descend, so that the rubber block 13 is attached to the frustum guide post 10, thus fixing the pot body. Moreover, while the first electromagnet 7 drives the pot body to descend, the edge of the pot body will slide down along the edge of the frustum guide post 10 to ensure the center position of the pot body. After welding is completed, the first electromagnet 7 is de-energized, and the lifting shaft 6 continues to descend. At this time, the vertical rod 12 will continue to descend and drive the frustum guide post 10 to descend synchronously. When the upper surface of the rubber block 13 is lower than the surface of the machine base 1, the welded pot body can be removed from the side.

[0025] like Figure 8 As shown, the locking assembly includes several locking tongue blocks 20. Several circumferentially distributed telescopic holes 19 are provided on the side of the lifting shaft 6. The locking tongue blocks 20 are slidably disposed in the telescopic holes 19. A push-out spring 21 is provided on the back of the locking tongue blocks 20. An iron block 22 is fixed on the locking tongue blocks 20. A second electromagnet 23 is provided in the middle position of the lifting shaft 6. The second electromagnet 23 is at the same height as the iron block 22.

[0026] It should be noted that by pushing out the spring 21, the locking tongue block 20 is pressed outward, and the second electromagnet 23 can control the attraction force on the iron block 22 by switching the power on and off, thereby realizing the extension and retraction control of the locking tongue block 20. After the welded pot body is taken out, the lifting shaft 6 is reset, and the locking tongue block 20 can be retracted. At this time, the ring 17 will lose pressure, and the buffer spring 14 can be reset, which is convenient for subsequent use.

[0027] like Figure 9 and Figure 10 As shown, the gear disc 5 consists of two half discs 24, and a connecting flange 25 is provided below the half disc 24. The two half discs 24 are fixed by bolts. A right-angle bent rod 26 is fixed below the half disc 24, and a damping block 27 is fixed on the upper surface of one end of the right-angle bent rod 26. A limit groove 28 is opened on the lifting shaft 6, and the end of the right-angle bent rod 26 is inserted into the limit groove 28. A transverse wide groove 29 is opened inside the upper end of the lifting shaft 6. A thin-neck moving disc 30 is fixed on the lower surface of the first electromagnet 7, and the thin-neck moving disc 30 is located inside the transverse wide groove 29.

[0028] It should be noted that the first electromagnet 7 has the ability to move slightly laterally through the transverse wide slot 29 and the narrow neck moving plate 30. When the pot body is subjected to the lateral moving thrust of the frustum guide column 10, it can be adjusted in time. When the lifting shaft 6 descends to the level of the first electromagnet 7 and the upper surface of the machine base 1, the damping block 27 just abuts against the narrow neck moving plate 30, thereby locking the first electromagnet 7 and the lifting shaft 6, thus achieving the rotation transmission effect.

[0029] like Figure 4 , Figure 7 and Figure 11 As shown, the clamping mechanism includes an arc-shaped track 31 fixed to the upper surface of the machine base 1, an arc-shaped moving seat 32 slidably mounted on the track, an arc-shaped long slot 33 on the inner side of the arc-shaped moving seat 32, a clamping rod 36 hinged to the arc-shaped moving seat 32, and a spreading spring 39 between the clamping rod 36 and the arc-shaped moving seat 32. An upper clamping block 37 is detachably connected to the lower part of the clamping rod 36 by bolts, and a lower clamping block 38 is detachably connected to the upper surface of the arc-shaped moving seat 32 by bolts. A transverse micro electric push rod 40 is mounted on the arc-shaped moving seat 32 to push the upper clamping rod 36 to achieve clamping and fixing. An arc-shaped damping slide rail 35 is fixed to the lower surface of the gear plate 5, and a connecting bent rod 34 is slidably mounted on the arc-shaped damping slide rail 35. A moving shaft is fixed to one end of the connecting bent rod 34, and the moving shaft passes through the arc-shaped long slot 33 and is fixed to the arc-shaped moving seat 32.

[0030] It should be noted that the connecting rod 34 is rotated by the gear plate 5, and the arc-shaped moving seat 32 rotates synchronously with the pot body through the connecting rod 34. The handle can be clamped by the upper clamping block 37 and the lower clamping block 38, thereby achieving a fixing effect during welding. In addition, the upper clamping block 37 and the lower clamping block 38 can be disassembled and replaced to adapt to handles of different shapes. When the handle is clamped and completely passes the welding position, the transverse micro electric push rod 40 contacts the clamping rod 36 for compression, and the pot body drives the handle to continue rotating. The moving shaft abuts against the end of the arc-shaped long slot 33, causing the arc-shaped moving seat 32 to stop moving. At this time, the rotation of the gear plate 5 will cause the connecting rod 34 and the arc-shaped damping slide rail 35 to slide against each other, preventing the device from jamming and ensuring smooth material discharge after the pot body is welded (without being blocked by the clamping mechanism).

[0031] like Figure 12 As shown, the feeding mechanism includes several first mounting frames 41 fixed on the support frame 2. The first mounting frames 41 are evenly distributed around the circumference. A feeding shaft 42 is rotatably mounted on the first mounting frame 41, and a feeding motor 43 is used to drive the feeding shaft 42 to rotate. Rotating plates 44 are fixed at the upper and lower ends of the feeding shaft 42. Semi-circular baffles 45 are fixed on the outer side of the rotating plates 44, and the upper semi-circular baffles 45 and the lower semi-circular baffles 45 are offset from each other in the vertical direction.

[0032] It is important to note that the semi-circular baffle 45 supports the pot body from the edge to prevent it from sagging. When the bottom pot body is supported by the lower semi-circular baffle 45, none of the pot bodies will sagging. As the feeding shaft 42 rotates, when the lower semi-circular baffle 45 rotates to the side away from the pot body, the upper semi-circular baffle 45 is just below the edge of the second pot body below. At this time, only the bottom pot body will sagging. Similarly, as the feeding shaft 42 continues to rotate, after the bottom pot body is welded and discharged, the new bottom pot body will pass over the upper semi-circular baffle 45 and abut against the lower semi-circular baffle 45. This cycle can achieve the effect of intermittent feeding.

[0033] like Figures 1-3 As shown, the discharge mechanism includes a conveyor 47 fixed below the machine base 1. A conveyor belt is installed on the conveyor 47, and a lever 48 is installed on the conveyor belt. A discharge slot 46 is opened in the middle of the machine base 1, and the lever 48 is located in the discharge slot 46.

[0034] It should be noted that after welding is completed, the conveyor 47 drives the lever 48 to move along the discharge slot 46 and moves the pot body from the inside of the pot. The lever 48 will continue to move with the conveyor 47 and reset after rotating once, which is convenient for the next discharge.

[0035] like Figure 1 and Figure 13 As shown, the laser welding mechanism includes a second mounting bracket 49 fixed on the support frame 2. An adjusting screw 50 is rotatably disposed inside the second mounting bracket 49, and an adjusting motor 51 is mounted above the second mounting bracket 49 to drive the adjusting screw 50 to rotate. Two guide rods 52 parallel to the adjusting screw 50 are also fixed inside the second mounting bracket 49. Adjusting components 53 are slidably disposed on the guide rods 52 and are threadedly connected to the adjusting screw 50. A support rod 54 is fixed on the adjusting component 53, and a laser welding head 55 is mounted on the end of the support rod 54.

[0036] It should be noted that by adjusting the motor 51 to drive the adjusting screw 50 to rotate, and then through the transmission of the adjusting component 53 and the support rod 54, the laser welding head 55 can be adjusted up and down. Combined with the rotation of the pot body, a continuous welding effect can be achieved, which can achieve more stable welding compared to spot welding.

[0037] like Figure 14 As shown, a rapid intelligent welding device for cookware handles includes: Obtain a grayscale image of the outer contour of the connecting flange between the handle and the pot body; Obtain the coordinates of the leftmost and rightmost contour points, and then cut the contour using the two contour point coordinates to obtain two trajectory maps respectively; Multiple coordinate points are obtained at equal intervals on the contour, and the coordinate points are connected by line segments. The difference between the coordinate points at the two ends of each line segment is calculated. Obtain the linear velocity of the pot body rotation, and calculate the longitudinal movement speed of the two tracks based on the coordinate difference between the two ends; Divide a line segment into three strokes, mark the longitudinal movement speed as the middle stroke speed, calculate the difference between the adjacent front and rear stroke speeds, calculate the acceleration of the rear stroke and the adjacent front stroke, and keep the displacement constant. Welding is performed as the pot body and handle rotate synchronously, following the obtained path and speed.

[0038] It should be noted that, for ease of understanding, the following simulated data is used: Assume the outer contour of the grayscale image is a rhombus (for ease of calculation, a convenient rhombus is used), and the four coordinate points of the rhombus are (0, 0), (3, 3), (6, 0), and (3, -3) in a rectangular coordinate system (unit: cm, all subsequent length units are the same and will not be shown). Assume the linear velocity of the pot body and handle is 1 (unit: cm / s; all subsequent velocities are in the same unit and will not be shown).

[0039] First, divide the rhombus into an upper and lower half using the two vertices at both ends. Taking the upper half as an example, the welding method for the lower half is the same: First, obtain multiple coordinate points, assuming the coordinate points are (0, 0), (3, 3), and (6, 0). The sides of the rhombus are then the line segments connecting them. Calculate the longitudinal movement speed of the welding track above the first line segment (0,0) to (3,3): The time required for the pot body and handle to move is 3 seconds (the units of time are the same for all subsequent times and will not be shown), therefore the vertical movement speed is 3 ÷ 3 = 1.

[0040] Therefore, this segment is divided into three stages: (0,0) to (1,1), (1,1) to (2,2), and (2,2) to (3,3). The vertical movement speed from (0,0) to (2,2) is 1 (since (0,0) is the starting point, the acceleration of the first segment of this line segment is 0). Calculate the longitudinal movement speed of the welding track above the second line segment (3,3) to (6,0): The time required for the pot body and handle to move is 3, therefore the longitudinal movement speed is -3÷3=-1 (moving in the opposite direction of the vertical axis, so it is a negative value).

[0041] Therefore, this segment is divided into three stages: (3,3) to (4,2), (4,2) to (5,1), and (5,1) to (6,0). The longitudinal movement speed from (4,2) to (6,0) is -1 (since (6,0) is the endpoint, the acceleration of the latter part of this segment is 0).

[0042] The initial velocity between the rear end of the first line segment and the front end of the second line segment needs to be 1, the final velocity needs to be -1, and the distance traveled needs to be 2. Therefore, according to mathematical principles, the jerk in the middle needs to be 0 cm / s². 3， The initial acceleration is -1 cm / s². 2 Other segments can be calculated using the same method to obtain results such as... Figure 14 The speed conditions are shown, and welding can be performed according to the speed conditions (the longitudinal movement speed of the laser welding head 55 is controlled in conjunction with the rotational linear speed of the pot body and the handle to achieve welding).

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A rapid intelligent welding device for cookware handles, comprising a machine base (1), characterized in that: A support frame (2) is fixed above the machine base (1). A drop opening is provided in the middle of the support frame (2), and several vertical railings (3) are fixed around the drop opening. Several circumferentially distributed feeding structures are provided on the support frame (2) to realize intermittent feeding. A fixed shaft ring (4) is fixed at the bottom of the machine base (1). A gear disc (5) is rotatably provided on the outside of the fixed shaft ring (4). A drive gear (8) that meshes with the gear disc (5) is rotatably provided on the lower surface of the machine base (1), and a device for driving the drive gear (8) is installed. The rotating motor has a lifting shaft (6) in the middle of the fixed shaft ring (4). The bottom of the lifting shaft (6) is rotatably connected to the top of the lifting cylinder (9), and the bottom of the lifting cylinder (9) is fixed to the installation ground by bolts. The upper end of the lifting shaft (6) is equipped with a first electromagnet (7). A clamping mechanism is provided on one side of the machine base (1) for clamping the handle before welding. Both the support frame (2) and the machine base (1) are equipped with laser welding mechanisms for welding during the rotation of the handle and the pot body.

2. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The machine base (1) has several circumferentially distributed circular holes, and a frustum guide post (10) is slidably arranged in each hole. A lifting sleeve (11) is fixed in the middle of the frustum guide post (10). A vertical rod (12) is slidably arranged inside the lifting sleeve (11). A rubber block (13) is fixed to the upper end of the vertical rod (12), and a buffer spring (14) is sleeved on the vertical rod (12). The upper and lower ends of the buffer spring (14) abut against the rubber block (13) and the lifting sleeve (11) respectively. A fixed platform (15) is fixed on the lower surface, and the bottom of the vertical rod (12) slides through the fixed platform (15). A hard spring (16) is also sleeved on the outside of the vertical rod (12), and the upper and lower ends of the hard spring (16) abut against the truncated cone guide post (10) and the fixed platform (15) respectively. A ring (17) is sleeved on the outside of the lifting shaft (6), and a connecting rod (18) is connected between the ring (17) and the vertical rod (12). A snap-fit ​​assembly is provided between the ring (17) and the lifting shaft (6).

3. The rapid intelligent welding equipment for cookware handles according to claim 2, characterized in that: The latching assembly includes several latch blocks (20), and several circumferentially distributed telescopic holes (19) are provided on the side of the lifting shaft (6). The latch blocks (20) are slidably disposed in the telescopic holes (19), and a push-out spring (21) is provided on the back of the latch blocks (20). An iron block (22) is fixed on the latch blocks (20), and a second electromagnet (23) is provided in the middle position of the lifting shaft (6). The second electromagnet (23) is at the same height as the iron block (22).

4. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The gear plate (5) consists of two half-plates (24), and a connecting flange (25) is provided below the half-plates (24). The two half-plates (24) are fixed by bolts. A right-angle bent rod (26) is fixed below the half-plates (24), and a damping block (27) is fixed on the upper surface of one end of the right-angle bent rod (26). A limit groove (28) is opened on the lifting shaft (6), and the end of the right-angle bent rod (26) is inserted into the limit groove (28). A transverse wide groove (29) is opened inside the upper end of the lifting shaft (6). A thin-neck moving plate (30) is fixed on the lower surface of the first electromagnet (7), and the thin-neck moving plate (30) is located inside the transverse wide groove (29).

5. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The clamping mechanism includes an arc-shaped track (31) fixed on the upper surface of the machine base (1), an arc-shaped moving seat (32) slidably arranged on the arc-shaped track (31), an arc-shaped long slot (33) is opened on the inner side of the arc-shaped moving seat (32), a clamping rod (36) is hinged on the arc-shaped moving seat (32), and a spreading spring (39) is arranged between the clamping rod (36) and the arc-shaped moving seat (32). An upper clamping block (37) is detachably connected to the lower part of the clamping rod (36) by bolts, and a lower clamping block (38) is detachably connected to the upper surface of the arc-shaped moving seat (32) by bolts. A transverse micro electric push rod (40) is installed on the arc-shaped moving seat (32) to push the upper clamping rod (36) to achieve clamping and fixing.

6. The rapid intelligent welding equipment for cookware handles according to claim 5, characterized in that: The lower surface of the toothed disc (5) is fixed with an arc-shaped damping slide rail (35), and a connecting rod (34) is slidably arranged on the arc-shaped damping slide rail (35). One end of the connecting rod (34) is fixed with a moving shaft, and the moving shaft passes through the arc-shaped long slot (33) and is fixed with the arc-shaped moving seat (32).

7. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The feeding mechanism includes several first mounting frames (41) fixed on the support frame (2). The first mounting frames (41) are evenly distributed around the circumference. A feeding shaft (42) is rotatably mounted on the first mounting frame (41), and a feeding motor (43) is used to drive the feeding shaft (42) to rotate. Rotating plates (44) are fixed at the upper and lower ends of the feeding shaft (42). Semi-circular baffles (45) are fixed on the outer side of the rotating plates (44), and the upper semi-circular baffles (45) and the lower semi-circular baffles (45) are mutually separated in the vertical direction.

8. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The discharge mechanism includes a conveyor (47) fixed below the machine base (1), a conveyor belt is installed on the conveyor (47), and a lever (48) is installed on the conveyor belt. A discharge slot (46) is opened in the middle of the machine base (1), and the lever (48) is located in the discharge slot (46).

9. The rapid intelligent welding equipment for cookware handles according to claim 1, characterized in that: The laser welding mechanism includes a second mounting bracket (49) fixed on a support frame (2). An adjusting screw (50) is rotatably provided inside the second mounting bracket (49), and an adjusting motor (51) is installed above the second mounting bracket (49) to drive the adjusting screw (50) to rotate. Two guide rods (52) parallel to the adjusting screw (50) are also fixed inside the second mounting bracket (49). An adjusting component (53) is slidably provided on the guide rod (52), and the adjusting component (53) is threadedly connected to the adjusting screw (50). A support rod (54) is fixed on the adjusting component (53), and a laser welding head (55) is installed at the end of the support rod (54).

10. A rapid and intelligent welding method for cookware handles, characterized in that: include: Obtain a grayscale image of the outer contour of the connecting flange between the handle and the pot body; Obtain the coordinates of the leftmost and rightmost contour points, and then cut the contour using the two contour point coordinates to obtain two trajectory maps respectively; Multiple coordinate points are obtained at equal intervals on the contour, and the coordinate points are connected by line segments. The difference between the coordinate points at the two ends of each line segment is calculated. Obtain the linear velocity of the pot body rotation, and calculate the longitudinal movement speed of the two tracks based on the coordinate difference between the two ends; Divide a line segment into three strokes, mark the longitudinal movement speed as the middle stroke speed, calculate the difference between the adjacent front and rear stroke speeds, calculate the acceleration of the rear stroke and the adjacent front stroke, and keep the displacement constant. Welding is performed as the pot body and handle rotate synchronously, following the obtained path and speed.

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