Ear stud automatic welding equipment and ear stud welding method

Abstract

The invention discloses an automatic ear stud welding device and an ear stud welding method. The automatic ear stud welding device comprises a frame, a turntable, a support frame, an automatic ear needle feeding mechanism, a welding platform and a laser welding mechanism. An ear back fixing block is provided on the welding platform, the turntable is rotatably connected to the support frame, and robots are evenly distributed around the turntable. The discharge port of the automatic ear needle feeding mechanism is docked with the robot at the top of the turntable, the robot at the top of the turntable grabs the ear needle at the discharge port and then rotates with the turntable to a target welding position, the ear back is pre-placed on the ear back fixing block, the ear back is moved to the target welding position by the welding platform, the laser welding mechanism is aligned with the target welding position, and is used to weld the ear back and the ear needle. The ear stud welding method is a method of using the automatic ear stud welding device to weld the ear studs, which has the advantage that the entire welding process is fully automated, and there is no need to manually splice the ear back and the ear needle, thereby improving work efficiency and reducing labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, in particular to an automatic ear stud welding device and an ear stud welding method. Background Art

[0002] Ear studs are small ornaments worn on the ears. They are relatively small in size and are generally made by welding the ear needle and the back of the ear.

[0003] Nowadays, ear studs are generally welded together by laser welding. During welding, the ear stud and the ear needle need to be manually spliced together, and then moved to the bottom of the laser welding, and the joint between the ear stud and the ear needle is welded by the laser welding mechanism. Since the docking and welding of the ear stud and the ear needle are all done manually, the welding efficiency is low and many quality problems are prone to occur. At the same time, the relative position of the ear stud and the ear needle, the size and position of the weld are poorly consistent, and the relative focal position of the ear stud is not fixed, which affects the welding depth, resulting in inconsistent welding strength and prone to defective products. In addition, manual repetitive operations are prone to fatigue, and the laser needs to be observed closely, which can easily cause damage to the human eye. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and to provide an automatic ear stud welding device and an ear stud welding method.

[0005] A technical solution of the present invention:

[0006] An automatic ear stud welding device comprises a frame, a turntable, a support frame for supporting the turntable, an automatic ear stud feeding mechanism, a welding platform, and a laser welding mechanism arranged directly above the welding platform; the welding platform is arranged on the upper surface of the frame and can move along the X-axis and Y-axis directions of the frame, and an ear stud fixing block is provided on the welding platform; the support frame is fixedly connected to the frame, and the turntable is rotatably connected to the support frame, the turntable is located above the welding platform and the turntable and the welding platform are perpendicular to each other, and a plurality of manipulators for clamping ear studs are evenly distributed around the turntable; the discharge port of the automatic ear stud feeding mechanism is docked with the manipulator at the top of the turntable, and the manipulator at the top of the turntable grabs the ear stud at the discharge port and then rotates with the turntable to a target welding position, an ear stud is pre-placed on the ear stud fixing block, the ear stud is moved to the target welding position by the welding platform, and the laser welding mechanism is aligned with the target welding position for welding the ear stud and the ear stud; wherein the target welding position is the position where the ear stud is completely aligned with the surface center of the ear stud.

[0007] A preferred solution is that the ear needle automatic feeding mechanism includes a fixed block, a sliding block and a first driving unit that drives the sliding block to slide; the fixed block is provided with an ear needle arrangement groove, the ear needle arrangement groove is perpendicular to the sliding direction of the sliding block, the side wall of the sliding block close to the fixed block is provided with an ear needle clamping groove, the ear needle clamping groove is close to the front end of the sliding direction of the sliding block, the front end of the sliding block and the side close to the positioning block is provided with a notch groove, the notch groove is connected with the ear needle clamping groove, the front end of the fixed block and the side close to the sliding block is provided with a positioning block, the side of the positioning block close to the sliding block is provided with an arc groove, when the sliding block slides to the front end of the fixed block, an ear needle positioning hole is formed between the ear needle clamping groove and the arc groove, and a discharge port of the ear needle automatic feeding mechanism is formed between the positioning block and the notch groove.

[0008] A preferred solution is that the ear stud automatic welding equipment also includes a cam assembly, the cam assembly includes a support plate, a second drive unit, a third drive unit, an upper arc-shaped boss and a lower arc-shaped boss, the support plate is vertically arranged and parallel to the turntable, the second drive unit is fixed on the top of the support plate, the third drive unit is fixed on the bottom of the support plate, the upper arc-shaped boss is fixedly connected to the drive shaft of the second drive unit, and the lower arc-shaped boss is fixedly connected to the drive shaft of the third drive unit; the manipulator includes a sliding frame, a rolling wheel, an upper chuck, a lower chuck The upper and lower clamps are connected to each other by a fourth driving unit; the rolling wheel is rotatably connected to the sliding frame, the fourth driving unit is fixedly connected to the sliding frame, and the sliding frame is connected to the radial sliding of the turntable; when the turntable rotates, the upper arc-shaped boss drives the rolling wheel of the topmost manipulator to rotate along the upper arc-shaped boss, the topmost manipulator grabs the ear needle in the ear needle positioning hole and takes it out along the discharge port, the lower arc-shaped boss drives the rolling wheel of the bottommost manipulator to rotate along the lower arc-shaped boss, and the bottommost manipulator moves the grabbed ear needle to the target welding position.

[0009] A preferred solution is that the ear needle arrangement groove includes an ear needle head moving groove and an ear needle root moving groove, the width of the ear needle head moving groove is greater than the width of the ear needle head, the width of the ear needle root moving groove is greater than the width of the ear needle root and less than the width of the ear needle head, and the ear needles are vertically arranged in the ear needle arrangement groove.

[0010] Another technical solution of the present invention:

[0011] A method for welding ear studs, comprising the steps of:

[0012] A batch of ear needles are placed in the ear needle arrangement groove, and the ear needles are moved along the ear needle arrangement groove into the ear needle clamping groove. The first driving unit drives the sliding block to slide, and the sliding block pushes the ear needles in the ear needle clamping groove to move into the ear needle positioning hole;

[0013] By rotating the turntable, the upper arc-shaped boss drives the rolling wheel of the top manipulator to rotate along the upper arc-shaped boss, and the top manipulator moves upward and grabs the ear needle in the ear needle positioning hole, and then slides out along the discharge; the lower arc-shaped boss drives the rolling wheel of the bottom manipulator to rotate along the lower arc-shaped boss, and the bottom manipulator moves the grabbed ear needle to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block, and the back of the ear is moved to the target welding position by the welding platform. The laser welding mechanism is aligned with the target welding position to weld the back of the ear and the ear needle into the target ear stud;

[0014] The topmost manipulator rotates with the turntable to the bottom of the turntable, and the lower arc-shaped boss drives the rolling wheel of the bottommost manipulator to rotate along the lower arc-shaped boss, and the bottommost manipulator moves the grabbed ear needle downward to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block, and the back of the ear is moved to the target welding position by the welding platform. The laser welding mechanism is aligned with the target welding position to weld the back of the ear and the ear needle into the target ear stud; the bottommost manipulator rotates with the turntable to the top of the turntable, and the upper arc-shaped boss drives the rolling wheel of the topmost manipulator to rotate along the upper arc-shaped boss, and the topmost manipulator moves upward and grabs the ear needle in the ear needle positioning hole, and then the ear needle slides out along the discharge port.

[0015] A preferred solution is that the manipulator releases the ear needle and rotates to the top of the turntable with the turntable. At the same time, the manipulator at the top grabs the next ear needle and rotates to the bottom of the turntable with the turntable. The welding platform moves to move the next back of the ear to the target position, and the laser welding mechanism aligns with the target welding position to weld the back of the ear and the ear needle, and the cycle continues.

[0016] A preferred solution is that the automatic ear stud welding equipment also includes an ear needle vibrator, which includes a vibration disk and a needle outlet tube. The needle outlet tube is connected to the ear needle arrangement groove. A batch of ear needles are placed in the vibration disk. Under the action of the vibration disk, the needle heads of the ear needles in the vibration disk are transported upward into the ear needle arrangement groove, and are finally pushed into the ear needle clamping groove in sequence.

[0017] A preferred solution is that the automatic ear stud welding equipment also includes a detector for detecting whether the robot has clamped the ear needle. When the detector detects that the robot has clamped the ear needle, the laser welding mechanism welds the ear needle and the back of the ear at the target position. When the detector does not detect that the robot has clamped the ear needle, the laser welding mechanism stops welding.

[0018] A preferred solution is that the number of the manipulators is 4 to 16.

[0019] In summary, the beneficial effects of the present invention are as follows: the welding platform can deliver the back of the ear to the target welding position, and the robot can automatically deliver the ear needle to the target welding position after clamping it and can automatically dock with the back of the ear. Then the laser welding mechanism welds the ear needle and the back of the ear at the target position. The entire welding process is fully automated, and there is no need to manually splice the back of the ear and the ear needle, which improves work efficiency and reduces labor intensity; the back of the ear and the ear needle are delivered to the target welding position each time they are welded, the welding position is relatively fixed, the weld point size and position are consistent, the ear stud relative to the focal position is fixed, which improves welding accuracy and consistent welding strength; the automatic feeding mechanism for ear needles can arrange the ear needles vertically, which is convenient for the robot to clamp them.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a three-dimensional diagram of the automatic feeding mechanism of the middle ear needle of the present invention;

[0023] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0024] Figure 4 This is an exploded view of the automatic feeding mechanism for middle ear needles of the present invention;

[0025] Figure 5 It is a three-dimensional diagram of the fixing block in the present invention;

[0026] Figure 6 is a three-dimensional diagram of the sliding block of the present invention;

[0027] Figure 7 It is a three-dimensional diagram of the positioning block in the present invention;

[0028] Figure 8 This is a three-dimensional diagram of the manipulator, turntable, cam assembly and support frame of the present invention when assembled;

[0029] Figure 9 is a perspective view of the cam assembly of the present invention;

[0030] Figure 10 This is a three-dimensional diagram of the manipulator, turntable and cam assembly of the present invention when assembled;

[0031] Figure 11 This is a three-dimensional diagram of the manipulator and the turntable when assembled in the present invention;

[0032] Figure 12 It is a three-dimensional diagram of the manipulator in the present invention;

[0033] Figure 13 It is a three-dimensional diagram of the laser welding mechanism of the present invention;

[0034] Figure 14 It is a three-dimensional diagram of the welding platform in the present invention. DETAILED DESCRIPTION

[0035] To illustrate the concept and purpose of the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 14 As shown, an automatic ear stud welding device includes a frame 10, a turntable 20, a support frame 30 for supporting the turntable 20, an automatic ear needle feeding mechanism 40, a welding platform 50, and a laser welding mechanism 60 arranged directly above the welding platform 50. The welding platform 50 is arranged on the upper surface of the frame 10 and can move along the X-axis and Y-axis directions of the frame 10. The welding platform 50 is provided with an ear stud fixing block 51, and the ear stud is fixed on the ear stud fixing block 51; the support frame 30 is fixedly connected to the frame 10, the turntable 20 is rotatably connected to the support frame 30, the turntable 20 can rotate around the support frame 30 in the vertical direction, the turntable 20 is located above the welding platform 50 and the turntable 20 and the welding platform 50 are perpendicular to each other, the rotation direction of the turntable 20 is perpendicular to the welding platform 50, and a number of manipulators for clamping the ear studs 46 are evenly distributed around the turntable 20. 70, the manipulator 70 can grab and release the ear needle 46; the discharge port 45 of the automatic ear needle feeding mechanism 40 is docked with the manipulator 70 at the top of the turntable 20, and the manipulator 70 at the top of the turntable 20 grabs the ear needle 46 at the discharge port 45 and then rotates with the turntable 20 to the target welding position. The back of the ear is pre-placed on the back of the ear fixing block 51, and the back of the ear is moved to the target welding position by the welding platform 50, and the laser welding mechanism 60 is aligned with the target welding position for welding the back of the ear and the ear needle 46; wherein, the target welding position is the position when the ear needle 46 is completely in contact with the surface center of the back of the ear.

[0037] like Figures 1 to 14As shown, the diameter of the turntable 20 is 200 to 800 mm. The welding platform 50 can deliver the back of the ear to the target welding position. After the manipulator 70 grabs the ear pin 46, it can automatically deliver it to the target welding position and automatically dock with the back of the ear. Then, the laser welding mechanism 60 welds the ear pin 46 and the back of the ear at the target position. The entire welding process is fully automated, eliminating the need for manual splicing and welding of the back of the ear and the ear pin 46, thereby improving work efficiency. The back of the ear and the ear pin 46 are delivered to the target welding position each time they are welded. The welding position is relatively fixed, the weld point size and position are consistent, and the ear stud is fixed relative to the focal point, thereby improving welding accuracy and consistent welding strength. The automatic ear pin feeding mechanism 40 can arrange the ear pins 46 vertically to facilitate the manipulator 70 to grab them.

[0038] like Figures 1 to 14 As shown, the ear needle automatic feeding mechanism 40 includes a fixed block 41, a sliding block 42 and a first driving unit 43 that drives the sliding block 42 to slide; the fixed block 41 is provided with an ear needle arrangement groove 411, and a plurality of ear needles 46 are arranged in the ear needle arrangement groove 411. The ear needle arrangement groove 411 and the sliding direction of the sliding block 42 are perpendicular to each other. The ear needles 46 in the ear needle arrangement groove 411 move along the ear needle arrangement groove 411 to approach the sliding block 42. The sliding block 42 is provided with an ear needle clamping groove 421 on one side wall close to the fixed block 41. The ear needle clamping groove 421 is close to the front end of the sliding direction of the sliding block 42. The ear needles 46 in the ear needle arrangement groove 411 move along the ear needle arrangement groove 411 to the ear needle clamping groove 421. The front end of the sliding block 42 and the side close to the positioning block 412 are provided with a notch groove 422, and the notch groove 422 is clamped with the ear needle The groove 421 is connected, and a positioning block 412 is provided at the front end of the fixed block 41 and on the side close to the sliding block 42. An arc-shaped groove 413 is provided on the side of the positioning block 412 close to the sliding block 42. When the sliding block 42 slides to the front end of the fixed block 41, an ear needle positioning hole is formed between the ear needle clamping groove 421 and the arc-shaped groove 413. The ear needle positioning hole prevents the ear needle 46 from escaping from the ear needle clamping groove 421. A support ear needle positioning detector 44 is provided directly above the ear needle positioning hole. The ear needle positioning detector 44 can detect whether there is an ear needle 46 in the ear needle positioning hole and the relative position of the ear needle 46. A discharge port 45 of the ear needle automatic feeding mechanism 40 is formed between the positioning block 412 and the notch groove 422. The width of the discharge port 45 is greater than the diameter of the root of the ear needle 46. When the robot 70 grabs the ear needle 46, it can drive the ear needle 46 to slide out along the discharge port 45.

[0039] like Figures 1 to 14As shown, the ear stud automatic welding equipment also includes a cam assembly 80, which includes a support plate 81, a second drive unit 82, a third drive unit 83, an upper arc-shaped boss 84 and a lower arc-shaped boss 85; the surface of the upper arc-shaped boss 84 is an arc-shaped structure, and the surface of the lower arc-shaped boss 85 is an arc-shaped structure; the support plate 81 is vertically arranged and parallel to the turntable 20, the support plate 81 is fixedly connected to the support frame 30, the second drive unit 82 is fixed to the top of the support plate 81, and the third drive unit 83 is fixed to the bottom of the support plate 81, the upper arc-shaped boss 84 is fixedly connected to the driving shaft of the second drive unit 82, the second drive unit 82 can drive the upper arc-shaped boss 84 to move up and down, the lower arc-shaped boss 85 is fixedly connected to the driving shaft of the third drive unit 83, and the third drive unit 83 can drive the lower arc-shaped boss 85 to move up and down. In the present invention, the second drive unit 82 and the third drive unit 83 are cylinders respectively. The manipulator 70 includes a sliding frame 71, a rolling wheel 72, an upper clamping head 73, a lower clamping head 74 and a fourth driving unit 75 for driving the upper clamping head 73 and the lower clamping head 74 to clamp or release each other. The fourth driving unit 75 is a cylinder. Under the action of external force, the sliding frame 71 can move along the radial direction of the turntable 20; the rolling wheel 72 is rotatably connected to the sliding frame 71, and the fourth driving unit 75 is fixedly connected to the sliding frame 71. The sliding frame 71 is slidably connected along the radial direction of the turntable 20; when the turntable 20 rotates, the upper arc The boss 84 drives the roller 72 of the topmost manipulator 70 to rotate along the upper arc-shaped boss 84. The upper arc-shaped boss 84 drives the upper chuck 73 and the lower chuck 74 to move away from the center of the turntable 20 via the roller 72. The topmost manipulator 70 grabs the ear needle 46 in the ear needle positioning hole and removes it through the discharge port 45. The lower arc-shaped boss 85 drives the roller 72 of the bottommost manipulator 70 to rotate along the lower arc-shaped boss 85. The bottommost manipulator 70 moves the grabbed ear needle 46 to the target welding position. The number of manipulators 70 ranges from 4 to 16. In this embodiment, the number of manipulators 70 is 8. The 8 manipulators 70 are evenly distributed around the turntable 20. The angle between two adjacent manipulators 70 is 45 degrees. In this embodiment, the turntable 20 rotates in a clockwise direction. When the turntable 20 rotates clockwise, the upper arc-shaped boss 84 moves upwards through the rolling wheel 72, and the top manipulator 70 grabs the ear needle 46 and drives the ear needle 46 to slide out of the discharge port 45; at the same time, the lower arc-shaped boss 85 drives the rolling wheel 72 of the bottom manipulator 70 to rotate along the lower arc-shaped boss 85. At this time, the bottom manipulator 70 slides downward and moves the ear needle 46 to the target welding position.

[0040] like Figures 1 to 14As shown, the ear needle arrangement slot 411 includes an ear needle head movable slot 414 and an ear needle base movable slot 415. The width of the ear needle head movable slot 414 is greater than the width of the ear needle head 46, and the width of the ear needle base movable slot 415 is greater than the width of the ear needle base 46 but less than the width of the ear needle head 46. The ear needles 46 are vertically arranged in the ear needle arrangement slot 411. The ear needles 46 move from one end to the other along the ear needle arrangement slot 411, and finally move into the ear needle clamping slot 421. When the first drive unit 43 drives the sliding block 42 to slide, the ear needles 46 in the ear needle clamping slot 421 move with the sliding block 42. Each slide of the sliding block 42 can only drive at most one ear needle 46, which facilitates the robot 70 to grasp. The diameter of the head of the ear needle 46 is 1.0 to 3.0 mm, and the diameter of the root of the ear needle 46 is 0.5 to 1.5 mm. The diameter of the head of the ear needle 46 is larger than the diameter of the root of the ear needle 46. The length of the ear needle 46 is 6 to 15 mm.

[0041] like Figures 1 to 14 As shown, a method for welding ear studs using an automatic ear stud welding device includes the following steps:

[0042] In the first step, a batch of ear needles 46 are placed in the ear needle arrangement slot 411. The ear needles 46 are moved along the ear needle arrangement slot 411 into the ear needle clamping slot 421. The first driving unit 43 drives the sliding block 42 to slide. The sliding block 42 pushes the ear needles 46 in the ear needle clamping slot 421 to move into the ear needle positioning hole.

[0043] In the second step, the turntable 20 is rotated, and the upper arc-shaped boss 84 drives the rolling wheel 72 of the topmost manipulator 70 to rotate along the upper arc-shaped boss 84. The topmost manipulator 70 moves upward and grabs the ear needle 46 in the ear needle positioning hole, and then the ear needle 46 slides out along the discharge port 45; the lower arc-shaped boss 85 drives the rolling wheel 72 of the bottommost manipulator 70 to rotate along the lower arc-shaped boss 85, and the bottommost manipulator 70 moves the grabbed ear needle 46 to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block 51, and the back of the ear is moved to the target welding position by the welding platform 50. The laser welding mechanism 60 is aligned with the target welding position to weld the back of the ear and the ear needle 46 into the target ear stud;

[0044] In the third step, the topmost manipulator 70 rotates with the turntable 20 to the bottom of the turntable 20, and the lower arc-shaped boss 85 drives the rolling wheel 72 of the bottommost manipulator 70 to rotate along the lower arc-shaped boss 85. The bottommost manipulator 70 moves the grabbed ear needle 46 downward to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block 51, and the back of the ear is moved to the target welding position by the welding platform 50. The laser welding mechanism 60 is aligned with the target welding position to weld the back of the ear and the ear needle 46 into the target ear stud; the bottommost manipulator 70 rotates with the turntable 20 to the top of the turntable 20, and the upper arc-shaped boss 84 drives the rolling wheel 72 of the topmost manipulator 70 to rotate along the upper arc-shaped boss 84. The topmost manipulator 70 moves upward and grabs the ear needle 46 in the ear needle positioning hole, and then the ear needle 46 slides out along the discharge port 45.

[0045] Preferably, Figures 1 to 14 As shown, after the third step, the manipulator 70 releases the ear needle 46 and rotates with the turntable 20 to the top of the turntable 20. At the same time, the manipulator 70 at the top grabs the next ear needle 46 and rotates with the turntable 20 to the bottom of the turntable 20. The welding platform 50 moves to move the next back of the ear to the target position, and the laser welding mechanism 60 aligns with the target welding position to weld the back of the ear to the ear needle 46, and the cycle continues.

[0046] Preferably, Figures 1 to 14 As shown, the automatic ear stud welding equipment also includes an ear needle vibrator 90, which includes a vibration disk 91 and a needle outlet tube 92. The needle outlet tube 92 is connected to the ear needle arrangement groove 411. A batch of ear needles 46 are placed in the vibration disk 91. Under the action of the vibration disk 91, the needle heads of the ear needles 46 in the vibration disk 91 are transported upward to the ear needle arrangement groove 411, and are finally pushed into the ear needle clamping groove 421 in sequence.

[0047] Preferably, Figures 1 to 14 As shown, the automatic ear stud welding equipment further includes a detector 31 for detecting whether the manipulator 70 has grasped the ear stud 46. When the detector 31 detects that the manipulator 70 has grasped the ear stud 46, the laser welding mechanism 60 welds the ear stud 46 at the target position to the back of the ear. When the detector 31 does not detect that the manipulator 70 has grasped the ear stud 46, the laser welding mechanism 60 stops welding. The detector 31 is fixedly connected to the support frame 30, and the probe of the detector 31 is close to the edge of the turntable 20.

[0048] Preferably, Figures 1 to 14 As shown, the number of manipulators 70 is 2-10. In this embodiment, the number of manipulators 70 is 8. The 8 manipulators 70 are evenly distributed around the turntable 20. The angle between two adjacent manipulators 70 is 45 degrees. In this embodiment, the turntable 20 rotates in a clockwise direction.

[0049] like Figures 1 to 14As shown, the laser welding mechanism 60 includes a laser head 61, a support column 62 and an adjusting rod 63. The support column 62 is fixedly connected to the frame 10. One end of the adjusting rod 63 is fixedly connected to the support column 62, and the other end is fixedly connected to the laser head 61. The adjusting rod 63 is used to adjust the relative position of the laser head 61.

[0050] like Figures 1 to 14 As shown, an ear needle 46 is placed in the vibration disk 91. Under the action of the vibration disk 91, the ear needle 46 moves along the needle outlet tube 92 to the ear needle arrangement groove 411, and the ear needle 46 moves along the ear needle arrangement groove 411 to the ear needle clamping groove 421. The first driving unit 43 drives the sliding block 42 to slide, and the sliding block 42 pushes the ear needle 46 in the ear needle clamping groove 421 to move into the ear needle positioning hole; when the turntable 20 is rotated, the upper arc-shaped boss 84 drives the rolling wheel 72 of the topmost manipulator 70 to rotate along the upper arc-shaped boss 84, and the topmost manipulator 70 moves upward and grabs the ear needle 46 in the ear needle positioning hole. The upper arc-shaped boss 84 pushes the manipulator 70 to push up along the radial direction of the turntable 20, and the manipulator 70 0 After clamping the ear needle 46, it is separated from the ear needle positioning hole, and then the ear needle 46 slides out along the discharge port 45; the topmost manipulator 70 rotates with the turntable 20. When the detector 31 detects that the manipulator 70 has clamped the ear needle 46, the manipulator 70 rotates with the turntable 20 to the bottom of the turntable 20, and the lower arc-shaped boss 85 drives the rolling wheel 72 of the bottommost manipulator 70 to rotate along the lower arc-shaped boss 85. The bottommost manipulator 70 moves the grabbed ear needle 46 downward to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block 51, and the back of the ear is moved to the target welding position by the welding platform 50. The laser welding mechanism 60 is aligned with the target welding position to weld the back of the ear and the ear needle 46 into the target ear stud.

[0051] like Figures 1 to 14 As shown, when the detector 31 does not detect that the manipulator 70 has clamped the ear needle 46, the manipulator 70 rotates with the turntable 20 to the bottom of the turntable 20, and the laser welding mechanism 60 stops welding.

[0052] like Figure 1 and Figure 14 As shown, an X-axis slide rail 53 and a Y-axis slide rail 52 are provided on the upper surface of the frame 10, the welding platform 50 is slidably connected to the Y-axis slide rail 52, and the Y-axis slide rail 52 is slidably connected to the X-axis slide rail 53. The welding platform 50 can move along the X-axis and Y-axis directions of the frame 10.

[0053] The above is a specific embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic ear stud welding device, comprising a frame, characterized in that: It also includes a turntable, a support frame for supporting the turntable, an automatic ear needle feeding mechanism, a welding platform and a laser welding mechanism arranged just above the welding platform; the welding platform is arranged on the upper surface of the frame and can move along the X-axis and Y-axis directions of the frame, and an ear-back fixing block is arranged on the welding platform; the support frame is fixedly connected to the frame, and the turntable is rotatably connected to the support frame. The turntable is located above the welding platform and the turntable and the welding platform are perpendicular to each other. Several manipulators for clamping ear needles are evenly distributed around the turntable; the discharge port of the automatic ear needle feeding mechanism is docked with the manipulator at the top of the turntable, and the manipulator at the top of the turntable grabs the ear needle at the discharge port and rotates to the target welding position with the turntable. The ear-back fixing block is pre-placed with the ear-back, The back of the ear is moved by the welding platform to the target welding position, and the laser welding mechanism is aligned with the target welding position for welding the back of the ear and the ear needle; wherein, the target welding position is the position when the ear needle is completely in contact with the surface center of the back of the ear; the automatic feeding mechanism for the ear needle includes a fixed block, a sliding block and a first driving unit that drives the sliding block to slide; the fixed block is provided with an ear needle arrangement groove, and the ear needle arrangement groove is perpendicular to the sliding direction of the sliding block, and the side wall of the sliding block close to the fixed block is provided with an ear needle clamping groove, and the ear needle clamping groove is close to the front end of the sliding direction of the sliding block, and the front end of the sliding block and the side close to the positioning block are provided with a notch groove, and the notch groove is connected to the ear needle clamping groove, and the front end of the fixed block and the side close to the positioning block are provided with a notch groove. A positioning block is provided on one side of the sliding block, and an arc groove is provided on the side of the positioning block close to the sliding block. When the sliding block slides to the front end of the fixed block, an ear needle positioning hole is formed between the ear needle clamping groove and the arc groove, and a discharge port of the ear needle automatic feeding mechanism is formed between the positioning block and the notch groove; the ear stud automatic welding equipment also includes a cam assembly, and the cam assembly includes a support plate, a second drive unit, a third drive unit, an upper arc-shaped boss and a lower arc-shaped boss. The second drive unit and the third drive unit are cylinders respectively, the surface of the upper arc-shaped boss is an arc-shaped structure, and the surface of the lower arc-shaped boss is an arc-shaped structure. The support plate is vertically arranged and parallel to the turntable. The second drive unit is fixed on the top of the support plate, and the third drive unit is fixed on the bottom of the support plate. The arc-shaped boss is fixedly connected to the driving shaft of the second driving unit, and the lower arc-shaped boss is fixedly connected to the driving shaft of the third driving unit; the manipulator includes a sliding frame, a rolling wheel, an upper chuck, a lower chuck and a fourth driving unit that drives the upper chuck and the lower chuck to clamp or loosen each other; the rolling wheel is rotatably connected to the sliding frame, the fourth driving unit is fixedly connected to the sliding frame, and the sliding frame is slidably connected along the radial direction of the turntable; when the turntable rotates, the upper arc-shaped boss drives the rolling wheel of the topmost manipulator to rotate along the upper arc-shaped boss, and the topmost manipulator grabs the ear needle in the ear needle positioning hole and takes it out along the discharge port, and the lower arc-shaped boss drives the rolling wheel of the bottommost manipulator to rotate along the lower arc-shaped boss, and the bottommost manipulator moves the grabbed ear needle to the target welding position.

2. The automatic ear stud welding equipment according to claim 1, characterized in that: The ear needle arrangement groove includes an ear needle head moving groove and an ear needle root moving groove. The width of the ear needle head moving groove is greater than the width of the ear needle head. The width of the ear needle root moving groove is greater than the width of the ear needle root and less than the width of the ear needle head. The ear needles are vertically arranged in the ear needle arrangement groove.

3. A method for welding ear studs using the automatic ear stud welding equipment according to claim 1, characterized in that: Including steps: A batch of ear needles are placed in the ear needle arrangement groove, and the ear needles are moved along the ear needle arrangement groove into the ear needle clamping groove. The first driving unit drives the sliding block to slide, and the sliding block pushes the ear needles in the ear needle clamping groove to move into the ear needle positioning hole; By rotating the turntable, the upper arc-shaped boss drives the rolling wheel of the top manipulator to rotate along the upper arc-shaped boss, and the top manipulator moves upward and grabs the ear needle in the ear needle positioning hole, and then slides out along the discharge; the lower arc-shaped boss drives the rolling wheel of the bottom manipulator to rotate along the lower arc-shaped boss, and the bottom manipulator moves the grabbed ear needle to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block, and the back of the ear is moved to the target welding position by the welding platform. The laser welding mechanism is aligned with the target welding position to weld the back of the ear and the ear needle into the target ear stud; The topmost manipulator rotates with the turntable to the bottom of the turntable, and the lower arc-shaped boss drives the rolling wheel of the bottommost manipulator to rotate along the lower arc-shaped boss, and the bottommost manipulator moves the grabbed ear needle downward to the target welding position. At the same time, the back of the ear is pre-placed on the back of the ear fixing block, and the back of the ear is moved to the target welding position by the welding platform. The laser welding mechanism is aligned with the target welding position to weld the back of the ear and the ear needle into the target ear stud; the bottommost manipulator rotates with the turntable to the top of the turntable, and the upper arc-shaped boss drives the rolling wheel of the topmost manipulator to rotate along the upper arc-shaped boss, and the topmost manipulator moves upward and grabs the ear needle in the ear needle positioning hole, and then the ear needle slides out along the discharge port.

4. The ear stud welding method according to claim 3, characterized in that: The manipulator releases the ear needle and rotates to the top of the turntable with the turntable. At the same time, the manipulator at the top grabs the next ear needle and rotates to the bottom of the turntable with the turntable. The welding platform moves to move the next back of the ear to the target position. The laser welding mechanism aligns with the target welding position to weld the back of the ear and the ear needle, and the cycle continues.

5. The ear stud welding method according to claim 3, characterized in that: The automatic ear stud welding equipment also includes an ear needle vibrator, which includes a vibration disk and a needle outlet tube. The needle outlet tube is connected to the ear needle arrangement groove. A batch of ear needles are placed in the vibration disk. Under the action of the vibration disk, the needle heads of the ear needles in the vibration disk are transported upward into the ear needle arrangement groove, and are finally pushed into the ear needle clamping groove in sequence.

6. The ear stud welding method according to claim 3, characterized in that: The automatic ear stud welding equipment also includes a detector for detecting whether the robot has clamped the ear needle. When the detector detects that the robot has clamped the ear needle, the laser welding mechanism welds the ear needle and the back of the ear at the target position. When the detector does not detect that the robot has clamped the ear needle, the laser welding mechanism stops welding.

7. The ear stud welding method according to claim 3, characterized in that: The number of the manipulators is 4 to 16.

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