A laser cutting device and method for aluminum alloy tubing used in the production of children's strollers

Abstract

This invention relates to the technical field of laser cutting, and more particularly to a laser cutting device and method for aluminum alloy tubes used in the production of children's strollers. It includes: a mounting frame; a controller mounted on the side of the mounting frame; a cutting robot mounted on the mounting frame; conveying rollers rotatably connected to the mounting frame at uniform intervals; a fixed plate symmetrically connected to both sides of the mounting frame; a sliding frame slidably connected to the fixed plate; a clamping roller rotatably connected to the sliding frame; a dual-axis cylinder symmetrically mounted on the top of the mounting frame, with its extension rod connected to the sliding frame; and a first electric push rod symmetrically mounted on both sides of the mounting frame. This invention, through the cooperation of the conveying roller, clamping roller, and first electric roller, can automatically clamp U-shaped tubes of different diameters. Simultaneously, the action of the first electric roller enables automatic conveying and flipping of the U-shaped tubes without manual intervention, significantly reducing clamping time and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a laser cutting device and method for aluminum alloy tubing used in the production of children's strollers. Background Technology

[0002] In the production of children's strollers, aluminum alloy tubing is widely used due to its advantages such as lightweight, high strength, and corrosion resistance, with many components having a U-shaped structure. These U-shaped aluminum alloy tubing typically require laser cutting for drilling or other shaping before assembly to meet the needs of subsequent connection and assembly. However, traditional laser cutting equipment has many limitations when processing U-shaped tubing.

[0003] Traditional laser cutting equipment is mostly suitable for clamping and processing tubes with straight or simple contours, and it is difficult to directly adapt to tubes with irregular shapes such as U-shapes. To process U-shaped tubes, special fixtures are usually required. However, these fixtures typically only have a fixing function and lack automatic flipping capability. After cutting one side of the U-shaped tube, the operator must manually remove it and re-clamp it to the other side before continuing processing. This process not only increases labor costs but also reduces production efficiency, and frequent manual intervention can easily lead to positioning errors, affecting processing accuracy and product consistency. Summary of the Invention

[0004] In view of this, the present invention provides a laser cutting device and method for aluminum alloy tubes used in the production of children's strollers. It can overcome the disadvantages of traditional laser cutting devices, which usually require additional special fixtures when processing U-shaped tubes. These fixtures lack automatic flipping capabilities and require manual flipping of the U-shaped tubes, which is troublesome and affects production efficiency.

[0005] The technical solution is as follows: A laser cutting device and method for aluminum alloy tubes used in the production of children's strollers, comprising: a mounting frame; a controller mounted on the side of the mounting frame; a cutting robot mounted on the mounting frame; conveying rollers rotatably connected to the mounting frame at uniform intervals; a fixed plate symmetrically connected to both sides of the mounting frame; a sliding frame slidably connected to the fixed plate; a clamping roller rotatably connected to the sliding frame; a dual-axis cylinder symmetrically mounted on the top of the mounting frame, with the telescopic rod of the dual-axis cylinder connected to the sliding frame; a first electric push rod symmetrically mounted on both sides of the mounting frame; a first connecting rod connected to the telescopic rod of the first electric push rod; a first electric roller mounted on the first connecting rod; and a conveying assembly disposed on the mounting frame for conveying U-shaped tubes.

[0006] Optionally, the conveying assembly includes: a second electric push rod, symmetrically mounted on both sides of the mounting frame; a connecting column, connected to the telescopic rod of the second electric push rod; a second connecting rod, rotatably connected to the connecting column; a second electric roller, mounted on the second connecting rod; and a rotating mechanism, disposed on the connecting column, for controlling the rotation of the second connecting rod.

[0007] Optionally, the rotating mechanism includes: a first drive motor mounted on the top of the connecting column; and an L-shaped connecting rod connected to the output shaft of the first drive motor, with the end of the L-shaped connecting rod fixedly connected to the second connecting rod.

[0008] Optionally, it also includes: a fixed base symmetrically connected to the mounting bracket; a rotating rod rotatably connected to the fixed base; a torsion spring symmetrically wound around both ends of the rotating rod, with both ends of the torsion spring connected to the fixed base and the rotating rod respectively; a connecting plate connected to the rotating rod; and a limiting component disposed on the fixed base for limiting the rotating rod.

[0009] Optionally, the limiting component includes: a connecting block symmetrically connected to the rotating rod; and a stop block connected to the fixed base, with the stop block and the connecting block in contact and engagement.

[0010] Optionally, it also includes: a fixed frame connected to the cutting robot; a third electric push rod installed inside the fixed frame; a second drive motor slidably connected inside the fixed frame, and the top of the second drive motor is connected to the telescopic rod of the third electric push rod; and a grinding wheel connected to the output shaft of the second drive motor.

[0011] Optionally, it also includes: a fixing block connected to the side of the fixing frame; a sleeve connected to the fixing block; a paintbrush placed inside the sleeve; and a fastening bolt threaded to the side of the sleeve, with the end of the fastening bolt contacting and engaging with the paintbrush.

[0012] The beneficial effects of the present invention are: 1. The present invention can automatically clamp U-shaped tubes of different diameters by means of the cooperation of the conveying roller, the clamping roller and the first electric roller. At the same time, the first electric roller can realize the automatic conveying and flipping of the U-shaped tubes without manual intervention, which significantly reduces clamping time and improves production efficiency.

[0013] 2. The present invention can form a dynamic positioning component by means of a rotating rod, a torsion spring and a connecting plate. Initially, the connecting plate limits the initial position of the U-shaped tube to ensure that the first electric roller accurately controls the moving distance of the U-shaped tube. When the U-shaped tube moves, the connecting plate can be flipped down to fit the bottom of the U-shaped tube without affecting the movement of the U-shaped tube. Then, through the cooperation of the stop block and the connecting block, the connecting plate can be reset to the vertical state.

[0014] 3. This invention integrates a grinding wheel and a paintbrush on a fixed frame. Before cutting, the paintbrush is used to blacken the processing area to prevent laser reflection from damaging the equipment. After cutting, the third electric push rod pushes the grinding wheel to grind and remove burrs from the end of the U-shaped tube or the inner wall of the hole, thus realizing the integration of cutting and grinding, reducing subsequent processes, and improving the smoothness and safety of the tube assembly surface. Attached Figure Description

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 This is a schematic diagram showing the installation of the sliding frame, clamping roller, and dual-axis cylinder of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation of the first connecting rod and the first electric roller of the present invention.

[0018] Figure 4 This is a schematic diagram showing the installation of the connecting column, the second connecting rod, and the second electric roller of the present invention.

[0019] Figure 5 This is a schematic diagram showing three processing states of the U-shaped tube of the present invention.

[0020] Figure 6 This is a schematic diagram of the installation of the mounting bracket of the present invention.

[0021] Figure 7 This is a schematic diagram showing the installation of the rotating rod, torsion spring, connecting plate, connecting block, and stop block of the present invention.

[0022] Figure 8 This is a schematic diagram of the installation of the fixing frame of the present invention.

[0023] Figure 9 This is a cross-sectional view of the fixing frame of the present invention.

[0024] Figure 10 This is a schematic diagram showing the installation of the fixing block, sleeve, paintbrush, and fastening bolts of the present invention.

[0025] The markings in the attached diagram are as follows: 001-U-shaped tube, 1-mounting bracket, 2-controller, 3-cutting robot, 4-conveying roller, 5-fixed plate, 6-sliding frame, 7-clamping roller, 8-dual-axis cylinder, 9-first electric push rod, 10-first connecting rod, 11-first electric roller, 12-second electric push rod, 13-connecting column, 14-second connecting rod, 15-second electric roller, 16-first drive motor, 17-L-shaped connecting rod, 18-fixed seat, 19-rotating rod, 20-torsion spring, 21-connecting plate, 22-connecting block, 23-stop block, 24-fixed frame, 25-third electric push rod, 26-second drive motor, 27-grinding wheel, 28-fixed block, 29-sleeve, 30-paintbrush, 31-fastening bolt. Detailed Implementation

[0026] Example: A laser cutting device and method for aluminum alloy tubing used in the production of children's strollers, such as... Figure 1-Figure 5 As shown, the assembly includes a mounting frame 1, a controller 2, a cutting robot 3, conveying rollers 4, fixed plates 5, sliding frames 6, clamping rollers 7, a dual-axis cylinder 8, a first electric push rod 9, a first connecting rod 10, a first electric roller 11, and a conveying assembly. The controller 2 is mounted on the front right side of the mounting frame 1, and the cutting robot 3 is mounted on the rear middle side of the mounting frame 1. Multiple conveying rollers 4 are evenly spaced and rotated from left to right on the upper part of the mounting frame 1. Fixed plates 5 are symmetrically connected to the upper front and rear sides of the mounting frame 1. There are four fixed plates 5, and sliding brackets are slidably connected to each of the four fixed plates 5. The mounting frame 6 has four sliding frames 6, each rotatably connected to a clamping roller 7. The top left and right sides of the mounting frame 1 are each equipped with a dual-axis cylinder 8. The telescopic rods on the front and rear sides of the dual-axis cylinder 8 are respectively connected to the sliding frames 6 on the front and rear sides. The upper left side of the front and rear sides of the mounting frame 1 is equipped with a first electric push rod 9. The telescopic rods of the two first electric push rods 9 are each connected to a first connecting rod 10. A first electric roller 11 is installed between the two first connecting rods 10. The first electric roller 11 is located directly above one of the conveying rollers 4. The mounting frame 1 is equipped with a conveying assembly for conveying the U-shaped tube 001.

[0027] like Figure 1 and Figure 4 As shown, the conveying assembly includes a second electric push rod 12, a connecting column 13, a second connecting rod 14, a second electric roller 15, and a rotating mechanism. The upper right side of both the front and rear sides of the mounting frame 1 is equipped with a second electric push rod 12. A connecting column 13 is connected to the telescopic rod of each of the two second electric push rods 12. A second connecting rod 14 is rotatably connected to each of the two connecting columns 13. A second electric roller 15 is mounted on each of the two second connecting rods 14, and the second electric roller 15 is located directly above one of the conveying rollers 4. A rotating mechanism for controlling the rotation of the second connecting rod 14 is provided on the connecting column 13. The rotating mechanism includes a first drive motor 16 and an L-shaped connecting rod 17. The top of each of the two connecting columns 13 is equipped with a first drive motor 16, and the output shafts of each of the two first drive motors 16 are connected to the L-shaped connecting rod 17. The lower end of the L-shaped connecting rod 17 is connected to the top of the second connecting rod 14.

[0028] Initially, the two second electric rollers 15 are in the open state (e.g., Figure 5(As shown in the upper part); When laser cutting of U-shaped tube 001 is required, first place U-shaped tube 001 with its opening facing right on top of conveyor roller 4, and position the lower right end of U-shaped tube 001 below the first electric roller 11. Then, the controller 2 controls the first electric push rod 9 to drive the first connecting rod 10 downward. The first connecting rod 10 drives the first electric roller 11 downward, so that the first electric roller 11 and conveyor roller 4 can cooperate to clamp the upper and lower sides of U-shaped tube 001. At the same time, the controller 2 can control the double-axis cylinder 8 on the left to drive the sliding frames 6 on the front and rear sides to move closer to each other. The sliding frames 6 drive the clamping rollers 7 on the front and rear sides to move closer to each other, so that the two clamping rollers 7 can cooperate to clamp the front and rear sides of U-shaped tube 001. In this way, the conveyor roller 4, clamping rollers 7 and the first electric roller can be used to cut the tube. 11. The U-shaped tube 001 is fixed and limited; then, the controller 2 controls the first electric roller 11 to start working. The first electric roller 11, through the friction between itself and the U-shaped tube 001, can drive the U-shaped tube 001 to move to the right a specified distance. The U-shaped tube 001, through the friction between itself and the conveying roller 4 and the clamping roller 7, can drive the conveying roller 4 and the clamping roller 7 to rotate. The rotation of the conveying roller 4 and the clamping roller 7 can assist the U-shaped tube 001 to move to the right. Then, the controller 2 will control the cutting robot 3 to perform laser cutting and drilling at a specified position at the bottom of the U-shaped tube 001. When the arc-shaped part of the U-shaped tube 001 moves between the conveying roller 4 and the first electric roller 11, the first electric roller 11, through the friction between itself and the U-shaped tube 001, can drive the U-shaped tube 001 to flip, so that the opening of the U-shaped tube 001 faces upward (e.g., Figure 5 (As shown in the middle), repeating the above operation allows the cutting robot 3 to perform laser cutting and drilling at a designated position on the U-shaped tube 001; when the next arc-shaped part of the U-shaped tube 001 moves between the conveying roller 4 and the first electric roller 11, the first electric roller 11, through the friction between itself and the U-shaped tube 001, can drive the U-shaped tube 001 to continue rotating, so that the opening of the U-shaped tube 001 faces to the left (as shown in the middle). Figure 5 (As shown in the lower part); at this time, the controller 2 will control the first drive motor 16 to drive the L-shaped connecting rod 17 to rotate horizontally by 90 degrees. The L-shaped connecting rod 17 will drive the second connecting rod 14 and the second electric roller 15 to rotate horizontally by 90 degrees, so that the two second electric rollers 15 close together (as shown in the lower part); Figure 4(As shown), then the controller 2 controls the second electric push rod 12 to drive the connecting column 13 to move downwards. The connecting column 13 drives the second connecting rod 14 and the second electric roller 15 to move downwards, so that the second electric roller 15 cooperates with the conveying roller 4 to clamp the upper and lower sides of the U-shaped tube 001. At the same time, the controller 2 controls the dual-axis cylinder 8 on the right side to drive the sliding frames 6 on the front and rear sides to move closer to each other. The sliding frames 6 drive the clamping rollers 7 on the front and rear sides to move closer to each other, so that the two clamping rollers 7 cooperate to clamp the front and rear sides of the U-shaped tube 001. On both sides, the U-shaped tube 001 can be fixed and limited by the conveying roller 4, the clamping roller 7, and the second electric roller 15. Then, the controller 2 will control the first electric roller 11 and the clamping roller 7 on the left to release the U-shaped tube 001. At this time, the controller 2 can control the second electric roller 15 to start working. The second electric roller 15 can drive the U-shaped tube 001 to move to the right a specified distance through the friction between it and the U-shaped tube 001, so that the cutting robot 3 can process the U-shaped tube 001 and the U-shaped tube 001 can move to the right to discharge.

[0029] like Figure 6 and Figure 7 As shown, it also includes a fixed base 18, a rotating rod 19, a torsion spring 20, a connecting plate 21, and a limiting assembly. Fixed bases 18 are symmetrically connected to the upper left side of the mounting bracket 1. A rotating rod 19 is rotatably connected between the two fixed bases 18. Both ends of the rotating rod 19 are wound with torsion springs 20, and the two ends of the torsion springs 20 are respectively connected to the fixed base 18 and the rotating rod 19. A connecting plate 21 is connected to the top middle of the rotating rod 19. A limiting assembly for limiting the rotating rod 19 is provided on the fixed base 18. The limiting assembly includes a connecting block 22 and a stop block 23. The connecting block 22 is symmetrically connected to the right side of the rotating rod 19. The top of both fixed bases 18 is connected to the stop block 23, and the stop block 23 is in contact with the connecting block 22.

[0030] When the worker places the U-shaped tube 001 on top of the conveyor roller 4, the lower right end of the U-shaped tube 001 contacts the left side of the connecting plate 21. This allows the initial position of the U-shaped tube 001 to be positioned, enabling the first electric roller 11 and the second electric roller 15 to precisely control the distance the U-shaped tube 001 moves to the right, ensuring that the cutting robot 3 can process the U-shaped tube 001 at the designated position. As the U-shaped tube 001 moves to the right, it pushes the connecting plate 21 to rotate to the right, causing the connecting plate 21 to drive the rotating rod. When the connecting rod 19 and the connecting block 22 rotate, the torsion spring 20 deforms, and the connecting block 22 disengages from the stop block 23. At this time, under the elastic force of the torsion spring 20, the connecting plate 21 will always be attached to the bottom of the U-shaped tube 001. When the U-shaped tube 001 disengages from the connecting plate 21, the torsion spring 20 will return to its original state, causing the rotating rod 19 to reverse and reset. The rotating rod 19 causes the connecting plate 21 and the connecting block 22 to reverse and reset until the connecting block 22 contacts the stop block 23. The stop block 23 can limit the rotating rod 19 to ensure that the connecting plate 21 is in a vertical state.

[0031] like Figure 8 and Figure 9 As shown, it also includes a fixed frame 24, a third electric push rod 25, a second drive motor 26, and a grinding wheel 27. The fixed frame 24 is connected to the cutting robot 3. The bottom of the fixed frame 24 is an open design. The third electric push rod 25 is installed on the upper side of the inside of the fixed frame 24. The second drive motor 26 is slidably connected to the lower side of the inside of the fixed frame 24. The top of the second drive motor 26 is connected to the telescopic rod of the third electric push rod 25. The grinding wheel 27 is connected to the output shaft of the second drive motor 26. The diameter of the grinding wheel 27 gradually decreases from top to bottom, which makes it easy for the grinding wheel 27 to extend into the mounting hole on the U-shaped tube 001 for grinding.

[0032] After the U-shaped tube 001 moves a specified distance to the right, the controller 2 can control the second drive motor 26 to drive the grinding wheel 27 to rotate, and control the third electric push rod 25 to drive the second drive motor 26 to move downward. The second drive motor 26 drives the grinding wheel 27 to move downward and extend it out of the bottom of the fixed frame 24. Then, the cutting robot 3 controls the grinding wheel 27 to move to the end of the U-shaped tube 001, which can grind and chamfer the end of the U-shaped tube 001 to remove burrs. After grinding is completed, the controller 2 will control... The second drive motor 26 stops working, causing the grinding wheel 27 to stop rotating. It also controls the third electric push rod 25 to drive the second drive motor 26 to move upward and reset. The second drive motor 26 drives the grinding wheel 27 to move upward and reset, retracting it into the fixed frame 24. This prevents the grinding wheel 27 from affecting the subsequent processing of the U-shaped tube 001 by the cutting robot 3. Similarly, after the cutting robot 3 has cut the mounting hole on the U-shaped tube 001, the inner wall of the mounting hole can also be ground by the grinding wheel 27 to remove the burrs on the inner wall of the mounting hole.

[0033] like Figure 10 As shown, it also includes a fixing block 28, a sleeve 29, a paintbrush 30 and a fastening bolt 31. The fixing block 28 is connected to the front side of the fixing frame 24, the sleeve 29 is connected to the front side of the fixing block 28, the paintbrush 30 is placed inside the sleeve 29, and the fastening bolt 31 is threadedly connected to the middle of the front side of the sleeve 29, and the rear end of the fastening bolt 31 is in contact with the surface of the paintbrush 30.

[0034] Before the cutting robot 3 processes the designated position of the U-shaped tube 001, it first controls the pen 30 to move to the designated position of the U-shaped tube 001 and controls the pen 30 to paint the designated position of the U-shaped tube 001 black. Only then will the cutting robot 3 process the designated position of the U-shaped tube 001. This prevents the surface of the U-shaped tube 001 from reflecting the laser emitted by the cutting robot 3 and protects the cutting robot 3 from damage.

Claims

1. A laser cutting device for aluminum alloy tubing used in the production of children's strollers, comprising: a mounting frame (1); a cutting robot (3) mounted on the mounting frame (1); characterized in that, It also includes: a controller (2), installed on the side of the mounting frame (1); a conveying roller (4), which is rotatably connected to the mounting frame (1) at uniform intervals; a fixing plate (5), which is symmetrically connected to both sides of the mounting frame (1); a sliding frame (6), which is slidably connected to the fixing plate (5); a clamping roller (7), which is rotatably connected to the sliding frame (6); a dual-axis cylinder (8), which is symmetrically installed on the top of the mounting frame (1), and the telescopic rod of the dual-axis cylinder (8) is connected to the sliding frame (6); a first electric push rod (9), which is symmetrically installed on both sides of the mounting frame (1); a first connecting rod (10), which is connected to the telescopic rod of the first electric push rod (9); a first electric roller (11), which is installed on the first connecting rod (10); and a conveying assembly, which is set on the mounting frame (1) for conveying the U-shaped tube (001); The conveying assembly includes: a second electric push rod (12), symmetrically mounted on both sides of the mounting frame (1); a connecting column (13), connected to the telescopic rod of the second electric push rod (12); a second connecting rod (14), rotatably connected to the connecting column (13); a second electric roller (15), mounted on the second connecting rod (14); and a rotating mechanism, set on the connecting column (13), used to control the rotation of the second connecting rod (14). The rotating mechanism includes: a first drive motor (16), mounted on the top of the connecting column (13); an L-shaped connecting rod (17), connected to the output shaft of the first drive motor (16), and the end of the L-shaped connecting rod (17) is fixedly connected to the second connecting rod (14); It also includes: a fixed base (18), symmetrically connected to the mounting bracket (1); a rotating rod (19), rotatably connected to the fixed base (18); a torsion spring (20), symmetrically wound around both ends of the rotating rod (19), and the two ends of the torsion spring (20) are respectively connected to the fixed base (18) and the rotating rod (19); a connecting plate (21), connected to the rotating rod (19); and a limiting component, set on the fixed base (18), used to limit the rotating rod (19); The limiting component includes: a connecting block (22), symmetrically connected to the rotating rod (19); and a stop block (23), connected to the fixed seat (18), with the stop block (23) in contact with the connecting block (22).

2. A laser cutting device for aluminum alloy tubing used in the production of children's strollers according to claim 1, characterized in that, It also includes: a fixed frame (24) connected to the cutting robot (3); a third electric push rod (25) installed inside the fixed frame (24); a second drive motor (26) slidably connected inside the fixed frame (24), and the top of the second drive motor (26) is connected to the telescopic rod of the third electric push rod (25); and a grinding wheel (27) connected to the output shaft of the second drive motor (26).

3. A laser cutting device for aluminum alloy tubing used in the production of children's strollers according to claim 2, characterized in that, It also includes: a fixing block (28) connected to the side of the fixing frame (24); a sleeve (29) connected to the fixing block (28); a paintbrush (30) placed inside the sleeve (29); and a fastening bolt (31) threaded to the side of the sleeve (29), with the end of the fastening bolt (31) contacting and engaging with the paintbrush (30).

4. The method of using the laser cutting device for aluminum alloy tubing in the production of children's strollers according to claim 1, characterized in that, Includes the following steps: First, place the U-shaped tube (001) with its opening facing right on top of the conveying roller (4), and position the lower right end of the U-shaped tube (001) below the first electric roller (11). Then, control the first electric push rod (9) via the controller (2) to drive the first connecting rod (10) and the first electric roller (11) downwards, so that the first electric roller (11) and the conveying roller (4) cooperate to clamp the upper and lower sides of the U-shaped tube (001). At the same time, control the double-shaft cylinder (8) on the left side via the controller (2) to drive the sliding frames (6) and clamping rollers (7) on the front and rear sides to move closer to each other, so that the two clamping rollers (7) cooperate to clamp the front and rear sides of the U-shaped tube (001) to fix the U-shaped tube (001). The limit is set, and then the controller (2) controls the first electric roller (11) to start working. The first electric roller (11) can drive the U-shaped tube (001) to move to the right a specified distance through the friction between it and the U-shaped tube (001). Then the controller (2) will control the cutting robot (3) to perform laser cutting and drilling at the specified position at the bottom of the U-shaped tube (001). When the arc part of the U-shaped tube (001) moves between the conveying roller (4) and the first electric roller (11), the first electric roller (11) can drive the U-shaped tube (001) to flip through the friction between it and the U-shaped tube (001), so that the cutting robot (3) can perform laser cutting and drilling at other specified positions of the U-shaped tube (001).

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