Automatic laser focusing device
By using an ultrasonic rangefinder and control module to drive the automatic focus mechanism in the laser die-cutting equipment, the problem of time-consuming and low accuracy of manual focus is solved, and efficient and accurate laser die-cutting is achieved, reducing the waste rate.
Patent Information
- Application Number
- CN202411595963.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2024-12-27
AI Technical Summary
The focal length adjustment of existing laser die-cutting equipment requires manual operation, which is time-consuming and has low accuracy, resulting in high waste rate.
Design a laser automatic focusing device, using an ultrasonic rangefinder to detect material cutting points, and drive transverse movement, lifting and rotating mechanisms to achieve automatic focusing of the laser generator, combining the belt mechanism and the compression mechanism to improve cutting accuracy and stability.
It improves the accuracy and efficiency of focal length adjustment, reduces the waste production rate, and improves automation performance and practicality.
Smart Images
Figure CN119187844A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of laser die-cutting equipment, and in particular to a laser automatic focusing device. Background Art
[0002] Laser die-cutting is a common cutting process, which is widely used in industrial manufacturing, paper processing, electronic equipment, printing industry, packaging industry and other fields. The working principle of laser die-cutting is based on the high energy and controllability of laser beam. The laser generator generates a high-energy laser beam, which is focused to a very small point through a combination of reflectors and lenses, thereby generating a high energy concentration on the material, causing the material to melt, gasify or vaporize rapidly to achieve cutting. Laser die-cutting is usually used to cut the wavy edges of materials, so it is necessary to adjust the focal length frequently. In the prior art, the focal length adjustment of laser die-cutting equipment is usually performed manually, which is time-consuming and has low precision, and generates a lot of waste, so it needs to be improved. Summary of the invention
[0003] In order to improve the accuracy and efficiency of focal length adjustment and reduce the scrap rate, the present application provides a laser automatic focusing device.
[0004] The present application provides a laser automatic focusing device that adopts the following technical solution: A laser automatic focusing device comprises a die-cutting table, wherein a belt mechanism for transmitting materials is arranged on the die-cutting table, a mounting frame is arranged above the belt mechanism, a first transverse movement mechanism is arranged on the mounting frame, a first mounting plate is arranged on the first transverse movement mechanism, a lifting mechanism is arranged on the bottom wall of the first mounting plate, a rotating mechanism is arranged on the lifting mechanism, a second transverse movement mechanism is arranged on the rotating mechanism, a second mounting plate is arranged on the second transverse movement mechanism, a laser generator is arranged on the second mounting plate, an ultrasonic rangefinder for detecting a material cutting point is arranged on one side of the laser generator, a control module is arranged on the die-cutting table, the control module is communicatively connected with the ultrasonic rangefinder, and the control module controls the opening and closing of the first transverse movement mechanism, the lifting mechanism, the rotating mechanism, and the second transverse movement mechanism based on the detection result of the ultrasonic rangefinder.
[0005] By adopting the above technical solution, when the material is moved to the target position through the belt mechanism, the ultrasonic rangefinder will detect the cutting point of the material and send the detection result to the control module. The control module will drive the first transverse movement mechanism, the lifting mechanism, the rotation mechanism and the second transverse movement mechanism based on the detection result to realize automatic focusing of the laser generator. Compared with the manual focusing method, the device of the present application effectively improves the automation performance and accuracy, and can effectively reduce the generation rate of waste materials.
[0006] Optionally, the rotating mechanism includes a mounting plate, a rotating motor and a rotating plate, the mounting plate is connected to the lifting mechanism, the bottom wall of the mounting plate is provided with a mounting cavity for setting the rotating motor, the output shaft of the rotating motor is set toward the die-cutting table, the rotating plate is connected to the output shaft of the rotating motor, and the second transverse movement mechanism is set on the bottom wall of the rotating plate.
[0007] By adopting the above technical solution, the rotating motor is started to drive the rotating disk to rotate relative to the mounting disk. The structure is simple, easy to implement, and has strong practicality.
[0008] Optionally, a limiting groove is provided on the peripheral wall of the mounting plate in the circumferential direction, and at least two arc-shaped plates are provided on the peripheral wall of the rotating plate. A rolling ball is provided on one side of the arc-shaped plate facing the limiting groove, and the rolling ball is rollingly connected in the limiting groove.
[0009] By adopting the above technical solution, the stability of the mounting plate during rotation can be effectively improved, the rotation wear of the mounting plate can be reduced, and the service life of the rotating mechanism can be extended.
[0010] Optionally, two parallel sliding grooves are provided on the surface of the die-cutting table, and the belt mechanism is located between the sliding grooves on both sides. A limit rod is provided in each sliding groove, and the limit rod is arranged along the length direction of the sliding groove. Two sliding columns are sleeved on the limit rod, and one end of the sliding column extends out of the sliding groove. Two driving members are provided in the sliding groove, and the driving members and the sliding columns correspond to each other one by one. The driving member drives the corresponding sliding column to slide along the length direction of the limit rod, and a clamping mechanism for fixing the material is provided between the two corresponding sliding columns in the two sliding grooves.
[0011] By adopting the above technical solution, opening a sliding groove and setting a clamping mechanism, the clamping mechanism can be adjusted based on the actual size of the material and the material can be clamped, so as to improve the stability of the material during the laser die-cutting process, improve the die-cutting accuracy, and reduce the generation of waste.
[0012] Optionally, the clamping mechanism includes a guide rail, two sliding sleeves, two adjusting parts, two lifting parts and two pressure plates, and the sliding column, sliding sleeve, adjusting part, lifting part and pressure plate correspond to each other one by one; the guide rail is arranged between the sliding columns on both sides, the two sliding sleeves are both sleeved and slidably connected to the guide rail, the adjusting part is arranged on the top wall of the corresponding sliding column, the adjusting part is connected to the corresponding sliding sleeve so that the sliding sleeve can slide along the length direction of the guide rail, the lifting part is arranged on the bottom wall of the corresponding sliding sleeve, and the pressure plate is arranged on the movable end of the corresponding lifting part.
[0013] By adopting the above technical solution, the adjusting part is started, driving the corresponding sliding sleeve to move along the length direction of the guide rail, so that the position of the pressing plate can be adjusted, and the lifting part can drive the pressing plate to move up and down, so as to achieve the pressing of the material to ensure the stability during the die-cutting process. The pressing mechanism of the present application is highly flexible and can adapt to the pressing of materials of different sizes, so that the practicality of the device of the present application is further improved.
[0014] Optionally, two flip grooves are provided on the surface of the die-cutting table, the belt mechanism is located between the flip grooves on both sides, the flip groove is located between the sliding groove and the belt mechanism, a flip plate is rotatably connected to the opening in the flip groove, and a flip member is provided in the flip groove for driving the flip plate to rotate.
[0015] By adopting the above technical solution, the setting of the flip plate can make the waste material that is cut and falls off the belt mechanism fall back to the surface of the belt mechanism through the rotation of the flip plate, and leave the die-cutting table with the belt mechanism, so as to facilitate maintaining the cleanliness of the die-cutting table surface and prevent the waste material from entering the sliding groove and causing blockage in the sliding groove.
[0016] Optionally, two groups of signal generators and signal receivers are provided on the surface of the die-cutting table, and the belt mechanism is located between the signal generator and the signal receiver. Both the signal receiver and the signal generator are communicatively connected to the control module, and the control module controls the opening and closing of the ultrasonic rangefinder based on the detection result of the signal receiver.
[0017] By adopting the above technical solution, the signal generator sends out a signal in real time and is received by the corresponding signal receiver. When the material moves to the preset position, the two groups of signal receivers will lose the signal of the signal generator at the same time. At this time, the control module can control the ultrasonic rangefinder to start to detect the cutting point of the material, further improving the automation performance and accuracy of the device of the present application.
[0018] Optionally, a plurality of purge mechanisms are provided on both sides of the belt mechanism.
[0019] By adopting the above technical solution, the blowing mechanism can blow the material that falls off after laser die-cutting to the surface of the belt mechanism, and follow the belt mechanism to leave the die-cutting table, thereby facilitating the maintenance of the cleanliness of the die-cutting table surface to prevent waste from entering the sliding groove and causing blockage in the sliding groove.
[0020] Optionally, a plurality of anti-slip grooves are provided on the surface of the belt mechanism.
[0021] By adopting the above technical solution, setting anti-slip grooves can effectively improve the stability of materials during transportation on the belt mechanism and reduce the probability of materials slipping, thereby effectively improving the accuracy of subsequent laser die-cutting.
[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the material moves to the target position through the belt mechanism, the ultrasonic rangefinder will detect the cutting point of the material and send the detection result to the control module. The control module will drive the first transverse movement mechanism, the lifting mechanism, the rotating mechanism and the second transverse movement mechanism based on the detection result to realize the automatic focusing of the laser generator. Compared with the manual focusing method, the device of the present application effectively improves the automation performance and accuracy, and can effectively reduce the generation rate of waste materials; 2. The signal generator sends out a signal in real time and is received by the corresponding signal receiver. When the material moves to the preset position, the two groups of signal receivers will lose the signal of the signal generator at the same time. At this time, the control module can control the ultrasonic rangefinder to start to detect the cutting point of the material, further improving the automation performance and accuracy of the device of this application. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of a laser automatic focusing device in an embodiment of the present application.
[0024] Figure 2 is a cross-sectional view of a device according to an embodiment of the present application.
[0025] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.
[0026] Description of reference numerals: 1. die-cutting table; 101. sliding groove; 102. limiting rod; 103. sliding column; 104. driving member; 105. turning groove; 106. turning plate; 107. turning member; 2. belt mechanism; 201. anti-slip pattern; 3. mounting frame; 4. first transverse movement mechanism; 401. first mounting plate; 5. lifting mechanism; 6. rotating mechanism; 601. mounting plate; 6011. mounting cavity; 6012. limiting groove; 602. Rotating motor; 603, rotating disk; 6031, arc plate; 6032, rolling ball; 7, second transverse movement mechanism; 701, second mounting plate; 8, laser generator; 9, ultrasonic rangefinder; 10, control module; 11, clamping mechanism; 1101, guide rail; 1102, sliding sleeve; 1103, adjusting member; 1104, lifting member; 1105, pressing plate; 12, signal generator; 13, signal receiver; 14, sweeping and blowing mechanism. DETAILED DESCRIPTION
[0027] The following is combined with Figure 1-3 This application is described in further detail.
[0028] The present application embodiment discloses a laser automatic focusing device. Figure 1, including a die-cutting table 1, a belt mechanism 2 is arranged on the surface of the die-cutting table 1, and a plurality of anti-skid grooves 201 are integrally formed on the surface of the belt mechanism 2 to increase the friction of the material on the surface of the belt mechanism 2, so as to reduce the probability of the material slipping during the subsequent laser die-cutting, and improve the die-cutting stability and accuracy.
[0029] Reference Figure 1 and Figure 2 A mounting frame 3 is arranged above the belt mechanism 2, and a first transverse movement mechanism 4 is arranged on the mounting frame 3. In this embodiment, the first transverse movement mechanism 4 includes a screw rod, a guide rod and a motor. The screw rod and the guide rod are arranged along the length direction of the die-cutting table 1. The screw rod is rotatably arranged relative to the mounting frame 3. The output shaft of the motor is connected to the screw rod to drive the screw rod to rotate relative to the mounting frame 3. A first mounting plate 401 is arranged on the first transverse movement mechanism 4. The first mounting plate 401 is sleeved on the guide rod and the outer wall of the screw rod, and the first mounting plate 401 is matched with the screw rod thread. The lateral movement of the first mounting plate 401 can be achieved through the rotation of the screw rod.
[0030] Reference Figure 1 , Figure 2 and Figure 3 The bottom wall of the first mounting plate 401 is provided with a lifting mechanism 5. In this embodiment, the lifting mechanism 5 adopts a plurality of cylinders. The piston rod of the lifting mechanism 5 is connected with a rotating mechanism 6. The rotating mechanism 6 includes a mounting plate 601, a rotating motor 602 and a rotating plate 603. The mounting plate 601 is connected to the end of the piston rod of the lifting mechanism 5. The bottom wall of the mounting plate 601 is provided with a mounting cavity 6011. The rotating motor 602 is arranged in the mounting cavity 6011 to save installation space. The output shaft of the rotating motor 602 is arranged toward the direction of the die-cutting table 1. The rotating plate 603 is connected to the output shaft of the rotating motor 602, thereby driving the rotating plate 603 to move relative to the mounting plate 601. Rotation: A limiting groove 6012 is provided on the peripheral wall of the mounting disk 601 along the circumferential direction, and the cross-section of the limiting groove 6012 is spherical. At least two arc plates 6031 are provided on the peripheral wall of the rotating disk 603. The arc plates 6031 extend toward the mounting disk 601, and a rolling ball 6032 is provided on the side of the arc plates 6031 facing the limiting groove 6012. The rolling ball 6032 is detachably connected to the arc plates 6031, and the rolling ball 6032 is located in the limiting groove 6012 to reduce the wear generated when the rotating disk 603 rotates relative to the mounting disk 601, and at the same time can reduce the burden on the output shaft of the rotating motor 602, improve stability and extend service life.
[0031] Reference Figure 2 and Figure 3A second transverse movement mechanism 7 is arranged on the bottom wall of the rotating disk 603. The second transverse movement mechanism 7 adopts a linear module. A second mounting plate 701 is arranged on the second transverse movement mechanism 7. The second mounting plate 701 moves along the length direction of the second transverse movement mechanism 7. A laser generator 8 is arranged on the bottom wall of the second mounting plate 701. The laser generator 8 can be moved in four directions of X, Y, Z and R through the first transverse movement mechanism 4, the lifting mechanism 5, the second transverse movement mechanism 7 and the rotating mechanism 6 to realize automatic focusing.
[0032] Reference Figure 2 and Figure 3 , an ultrasonic rangefinder 9 is provided on one side of the laser generator 8 to detect the cutting point of the material on the surface of the belt mechanism 2; a control module 10 is provided on the die-cutting table 1. In this embodiment, the control module 10 adopts a PLC controller, and the first transverse mechanism 4, the lifting mechanism 5, the second transverse mechanism 7 and the rotating mechanism 6 are all controlled by the control module 10. The ultrasonic rangefinder 9 is connected to the control module 10 for communication. The control module 10 controls the opening and closing of the first transverse mechanism 4, the lifting mechanism 5, the second transverse mechanism 7 and the rotating mechanism 6 based on the detection result of the ultrasonic rangefinder 9 to achieve Automatic focusing of the laser generator 8; two groups of signal generators 12 and signal receivers 13 are arranged on the surface of the die-cutting table 1, and the signal generator 12 and the signal receiver 13 are respectively arranged on both sides of the belt mechanism 2, and the signal receiver 13 and the signal generator 12 communicate through infrared rays, and the signal receiver 13 and the signal generator 12 are both communicated with the control module 10. When the material arrives at the predetermined position, the two groups of signal receivers 13 will not be able to receive signals at the same time. At this time, the control module 10 can control the ultrasonic rangefinder 9 to start to detect the cutting point of the material.
[0033] Reference Figure 1 and Figure 2 Two parallel sliding grooves 101 are provided on the surface of the die-cutting table 1, and the belt mechanism 2 is located between the sliding grooves 101 on both sides. The sliding groove 101 is opened parallel to the belt mechanism 2, and a limit rod 102 is provided in each sliding groove 101. Two sliding columns 103 are slidably connected to the limit rod 102, and one end of the sliding column 103 extends out of the sliding groove 101. Two driving members 104 are provided in the sliding groove 101, and the driving member 104 and the sliding column 103 are arranged one by one. In this embodiment, the driving member 104 adopts a cylinder, and its output shaft is connected to the corresponding sliding column 103 to drive the sliding column 103 to slide along the length direction of the limit rod 102; a clamping mechanism 11 is provided between the corresponding sliding columns 103 on both sides of the belt mechanism 2 to compress the material.
[0034] Reference Figure 1 and Figure 2The clamping mechanism 11 includes a guide rail 1101, two sliding sleeves 1102, two adjusting members 1103, two lifting members 1104 and two pressing plates 1105, wherein the sliding column 103, the sliding sleeve 1102, the adjusting member 1103, the lifting member 1104 and the pressing plate 1105 are arranged one by one, the guide rail 1101 is arranged between the two sliding columns 103, the two sliding sleeves 1102 are both sleeved on the guide rail 1101, and the adjusting member 1103 is arranged on the corresponding sliding column 103 The top wall, the movable end of the adjusting member 1103 is connected to the corresponding sliding sleeve 1102 to drive the sliding sleeve 1102 to move along the length direction of the guide rail 1101, the lifting member 1104 is arranged on the bottom wall of the corresponding sliding sleeve 1102, and the pressing plate 1105 is arranged on the movable end of the corresponding lifting member 1104. In this embodiment, the adjusting member 1103 and the lifting member 1104 both adopt cylinders. By setting the clamping mechanism 11, the material can be clamped to improve the stability and accuracy during die cutting.
[0035] Reference Figure 1 and Figure 2 Two flip grooves 105 are also provided on the surface of the die-cutting table 1. The belt mechanism 2 is located between the flip grooves 105 on both sides. The flip groove 105 is located between the belt mechanism 2 and the sliding groove 101. The opening of the flip groove 105 is rotatably connected with a flip plate 106. A flip member 107 is arranged in the flip groove 105. In this embodiment, the flip member 107 adopts a cylinder. The base of the flip member 107 is hinged to the bottom wall of the flip groove 105. The piston rod is hinged to the flip plate 106 to drive the flip plate 106 to rotate, so as to flip the die-cut waste back to the surface of the belt mechanism 2. At the same time, a plurality of purge mechanisms are also provided on the surface of the die-cutting table 1, which cooperate with the flip plate 106 to blow the material to the surface of the belt mechanism 2 and follow the belt mechanism 2 to leave the die-cutting table 1, so as to facilitate maintaining the cleanliness of the surface of the die-cutting table 1 to prevent the waste from entering the sliding groove 101 and causing blockage in the sliding groove 101.
[0036] The implementation principle of a laser automatic focusing device in an embodiment of the present application is as follows: the material to be laser die-cut is placed on the surface of the belt mechanism 2 and follows the belt mechanism 2 to a predetermined position. When both sets of signal receivers 13 are unable to receive signals, the control module 10 stops the operation of the belt mechanism 2 and starts the ultrasonic rangefinder 9 to detect the cutting point of the material. The control module 10 starts the first transverse movement mechanism 4, the lifting mechanism 5, the rotating mechanism 6 and the second transverse movement mechanism 7 based on the detection results, thereby realizing automatic focusing of the laser generator 8 to improve focusing efficiency and accuracy and reduce scrap rate.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A laser automatic focusing device, characterized in that: The die-cutting table (1) comprises a belt mechanism (2) for conveying materials provided on the die-cutting table (1), a mounting frame (3) provided above the belt mechanism (2), a first transverse movement mechanism (4) provided on the mounting frame (3), a first mounting plate (401) provided on the first transverse movement mechanism (4), a lifting mechanism (5) provided on the bottom wall of the first mounting plate (401), a rotating mechanism (6) provided on the lifting mechanism (5), a second transverse movement mechanism (7) provided on the rotating mechanism (6), and the second transverse movement mechanism (7) provided on the bottom wall of the first mounting plate (401). ) is provided with a second mounting plate (701), a laser generator (8) is provided on the second mounting plate (701), an ultrasonic rangefinder (9) for detecting the cutting point of the material is provided on one side of the laser generator (8), a control module (10) is provided on the die-cutting table (1), the control module (10) is in communication connection with the ultrasonic rangefinder (9), and the control module (10) controls the opening and closing of the first transverse movement mechanism (4), the lifting mechanism (5), the rotating mechanism (6) and the second transverse movement mechanism (7) based on the detection result of the ultrasonic rangefinder (9).
2. A laser automatic focusing device according to claim 1, characterized in that: The rotating mechanism (6) comprises a mounting plate (601), a rotating motor (602) and a rotating plate (603); the mounting plate (601) is connected to the lifting mechanism (5); a mounting cavity (6011) for mounting the rotating motor (602) is provided on the bottom wall of the mounting plate (601); an output shaft of the rotating motor (602) is arranged toward the die-cutting table (1); the rotating plate (603) is connected to the output shaft of the rotating motor (602); and the second transverse movement mechanism (7) is arranged on the bottom wall of the rotating plate (603).
3. The laser automatic focusing device according to claim 2, characterized in that: The peripheral wall of the mounting plate (601) is provided with a limiting groove (6012) along the circumferential direction, and the peripheral wall of the rotating plate (603) is provided with at least two arc-shaped plates (6031). A rolling ball (6032) is provided on a side of the arc-shaped plate (6031) facing the limiting groove (6012), and the rolling ball (6032) is rollingly connected in the limiting groove (6012).
4. The laser automatic focusing device according to claim 1, characterized in that: The surface of the die-cutting table (1) is provided with two sliding grooves (101) which are parallel to each other. The belt mechanism (2) is located between the sliding grooves (101) on both sides. A limit rod (102) is arranged in each of the sliding grooves (101). The limit rod (102) is arranged along the length direction of the sliding groove (101). Two sliding columns (103) are sleeved on the limit rod (102). One end of the sliding column (103) extends out of the sliding groove (101). Two driving members (104) are arranged in the sliding groove (101). The driving members (104) and the sliding columns (103) correspond to each other one by one. The driving members (104) drive the corresponding sliding columns (103) to slide along the length direction of the limit rod (102). A clamping mechanism (11) for fixing the material is arranged between the two corresponding sliding columns (103) in the two sliding grooves (101).
5. The laser automatic focusing device according to claim 4, characterized in that: The clamping mechanism (11) comprises a guide rail (1101), two sliding sleeves (1102), two adjusting members (1103), two lifting members (1104) and two pressing plates (1105), wherein the sliding column (103), the sliding sleeve (1102), the adjusting member (1103), the lifting member (1104) and the pressing plate (1105) correspond to each other one by one; the guide rail (1101) is arranged between the sliding columns (103) on both sides, and the two sliding sleeves (1102) are The adjusting member (1103) is sleeved and slidably connected to the guide rail (1101), the adjusting member (1103) is arranged on the top wall of the corresponding sliding column (103), the adjusting member (1103) is connected to the corresponding sliding sleeve (1102), so that the sliding sleeve (1102) can slide along the length direction of the guide rail (1101), the lifting member (1104) is arranged on the bottom wall of the corresponding sliding sleeve (1102), and the pressing plate (1105) is arranged on the movable end of the corresponding lifting member (1104).
6. The laser automatic focusing device according to claim 4, characterized in that: The die-cutting table (1) has two flip grooves (105) on its surface, the belt mechanism (2) is located between the flip grooves (105) on both sides, the flip groove (105) is located between the sliding groove (101) and the belt mechanism (2), a flip plate (106) is rotatably connected to the opening of the flip groove (105), and a flip member (107) is provided in the flip groove (105) for driving the flip plate (106) to rotate.
7. The laser automatic focusing device according to claim 1, characterized in that: The surface of the die-cutting table (1) is provided with two groups of signal generators (12) and signal receivers (13); the belt mechanism (2) is located between the signal generator (12) and the signal receiver (13); the signal receiver (13) and the signal generator (12) are both communicatively connected to a control module (10); and the control module (10) controls the opening and closing of the ultrasonic rangefinder (9) based on the detection result of the signal receiver (13).
8. The laser automatic focusing device according to claim 1, characterized in that: A plurality of blowing mechanisms are arranged on both sides of the belt mechanism (2).
9. The laser automatic focusing device according to claim 1, characterized in that: The surface of the belt mechanism (2) is provided with a plurality of anti-slip grooves (201).