Laser head protection mechanism and laser cutting machine

Abstract

The utility model discloses a laser head protection mechanism and a laser cutting machine, the laser head protection mechanism comprises a base, a movable seat and an anti-falling assembly, the base is fixedly connected with a mechanical arm, the base is provided with a first side face and a second side face, and the first side face and the second side face are both provided with first magnetic attraction parts; the movable seat is fixedly connected with the laser head, the movable seat is provided with a first connecting surface and a second connecting surface, after assembly, the first connecting surface is attached to the first side surface, the second connecting surface is attached to the second side surface, the first connecting surface and the second connecting surface are provided with second magnetic attraction parts, and the first magnetic attraction parts and the second magnetic attraction parts attract each other; the anti-falling assembly comprises a pull rope and a first spring, the two ends of the pull rope are fixed to the base and the movable base respectively, the movable base is fixedly connected with a hanging pin, and the first spring is used for driving the hanging pin to abut against the upper end face of the base. According to the laser head protection mechanism, the laser head can be protected when collision occurs, and damage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, and in particular to a laser head protection mechanism and a laser cutting machine. Background Technology

[0002] In related technologies, laser cutting operations typically rely on a robotic arm to drive the laser head, thereby automating the cutting of workpieces. However, in actual production, some workpieces have complex structures, often requiring cutting operations on various structures such as holes and grooves within the workpiece. During the laser head's movement, unexpected situations may occur, such as collisions with the workpiece or fixtures. Such collisions can not only damage the laser head itself, affecting subsequent normal use and cutting accuracy, but also damage the workpiece, reducing product quality and increasing production costs. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a laser head protection mechanism that can protect the laser head and reduce damage in the event of a collision.

[0004] This utility model also proposes a laser cutting machine with the aforementioned laser head protection mechanism.

[0005] According to a first aspect of the present invention, a laser head protection mechanism includes a base, a movable seat, and an anti-drop component. The base is fixedly connected to a robotic arm. The base has a first side and a second side, forming an angle between them. Both the first side and the second side are provided with a first magnetic attraction portion. The movable seat is fixedly connected to a laser head. The movable seat has a first connecting surface and a second connecting surface. After assembly, the first connecting surface is attached to the first side, and the second connecting surface is attached to the second side. The first connecting surface and the second connecting surface are provided with a second magnetic attraction portion, which attracts each other. The anti-drop component includes a pull rope and a first spring. The two ends of the pull rope are respectively fixed to the base and the movable seat. The movable seat is fixedly connected to a hook. The two ends of the first spring are respectively fixed to the base and the movable seat. The first spring is used to drive the hook to abut against the upper surface of the base.

[0006] The laser head protection mechanism according to the embodiments of this utility model has at least the following beneficial effects: The base is fixedly connected to the robotic arm, and the movable seat is fixedly connected to the laser head. A first magnetic attraction part is provided on the first and second sides, and a second magnetic attraction part is provided on the first and second connecting surfaces, attracting each other to stabilize the movable seat on the base. A hook is fixedly connected to the movable seat. One end of a first spring is connected to the base, and the other end is connected to the movable seat, allowing the first spring to drive the hook to abut against the upper surface of the base, enabling the base to bear the weight of the movable seat and the laser head. When the laser head collides with a workpiece or fixture, the movable seat will shift, stretching the first spring, and the second magnetic attraction part will slide on the first magnetic attraction part, allowing the first and second magnetic attraction parts to separate, and the movable seat and laser head to detach, avoiding hard collisions and preventing damage to the laser head and workpiece. Furthermore, a pull rope connects the base and the movable seat, preventing the movable seat from falling and damaging the laser head, thus improving reliability.

[0007] According to some embodiments of the present invention, the number of the first springs is set to two, the two first springs correspond to the first side and the second side respectively, the two ends of the first springs are fixed to the base and the movable seat respectively by fasteners, and the two fasteners are staggered in the vertical direction.

[0008] According to some embodiments of the present invention, the anti-fall component further includes an adjusting seat, an adjusting rod, and a second spring. The adjusting seat is fixedly connected to the lower end of the base, the adjusting rod passes through the adjusting seat, and the two ends of the second spring are respectively fixedly connected to the adjusting rod and the movable seat. The adjusting rod is threaded with a nut, and the nut is arranged on the side of the adjusting seat away from the second spring.

[0009] According to some embodiments of this utility model, the number of nuts is set to two, and the two nuts abut against each other.

[0010] According to some embodiments of the present invention, the anti-fall component further includes a detection component, which includes a first detection element and a second detection element. The first detection element is fixedly connected to the base, and the second detection element is fixedly connected to the movable seat. The first detection element corresponds to the second detection element, and the first detection element and the second detection element cooperate to detect the relative position of the base and the movable seat. The detection component is electrically connected to the laser head.

[0011] According to some embodiments of the present invention, the number of detection components is set to three, and the three detection components are respectively arranged on the first side, the second side and the upper surface of the base.

[0012] According to some embodiments of the present invention, the number of pull ropes is set to multiple, and the first connecting surface and the second connecting surface correspond to at least one pull rope.

[0013] According to some embodiments of the present invention, the number of the hanging pins is set to multiple, and the first connecting surface and the second connecting surface correspond to at least one hanging pin.

[0014] According to some embodiments of the present invention, the first side and the second side are perpendicular to each other.

[0015] The laser cutting machine according to a second aspect of the present invention includes the laser head protection mechanism of the first aspect of the present invention.

[0016] The laser cutting machine according to the embodiments of the present invention has at least the following beneficial effects: by setting the laser head protection mechanism of the first aspect of the present invention, the laser head can be quickly separated from the robotic arm when the robotic arm drives the laser head to collide accidentally, thereby reducing the damage to the laser head, helping to extend the service life of the laser cutting machine and improve its reliability.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the laser head protection mechanism according to the first aspect of this utility model;

[0020] Figure 2 This is an exploded view of the laser head protection mechanism according to the first aspect of the present invention;

[0021] Figure 3 This is a schematic diagram of the base of the laser head protection mechanism according to the first aspect of this utility model;

[0022] Figure 4 This is a schematic diagram of the movable seat of the laser head protection mechanism according to the first aspect of this utility model;

[0023] Figure 5 This is a schematic diagram of a laser cutting machine according to a second aspect embodiment of the present invention.

[0024] Figure label:

[0025] Base 100, first side 110, second side 120, first magnetic attraction part 130;

[0026] Movable seat 200, first connecting surface 210, second connecting surface 220, second magnetic suction part 230, hanging pin 240;

[0027] Anti-fall component 300, pull rope 310, first spring 320, fastener 321, adjusting seat 330, adjusting rod 340, nut 341, second spring 350, detection component 360, first detection piece 361, second detection piece 362;

[0028] Robotic arm 410, laser head 420. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Understandably, referring to Figures 1 to 5The laser head protection mechanism of the first aspect of this utility model includes a base 100, a movable seat 200, and an anti-drop component 300. The base 100 is fixedly connected to a robotic arm 410. The base 100 is provided with a first side 110 and a second side 120, forming an angle between the first side 110 and the second side 120. Both the first side 110 and the second side 120 are provided with a first magnetic attraction part 130. The movable seat 200 is fixedly connected to the laser head 420. The movable seat 200 is provided with a first connecting surface 210 and a second connecting surface 220. After assembly, the first connecting surface 210 fits against the first side. 110, the second connecting surface 220 is attached to the second side surface 120, and the first connecting surface 210 and the second connecting surface 220 are provided with a second magnetic part 230. The first magnetic part 130 and the second magnetic part 230 attract each other. The anti-fall component 300 includes a pull rope 310 and a first spring 320. The two ends of the pull rope 310 are respectively fixed to the base 100 and the movable seat 200. The movable seat 200 is fixedly connected with a hanging pin 240. The two ends of the first spring 320 are respectively fixed to the base 100 and the movable seat 200. The first spring 320 is used to drive the hanging pin 240 to abut against the upper end surface of the base 100.

[0034] The base 100 is fixedly connected to the robotic arm 410, and the movable seat 200 is fixedly connected to the laser head 420. By providing a first magnetic attraction part 130 on the first side 110 and the second side 120, and a second magnetic attraction part 230 on the first connecting surface 210 and the second connecting surface 220, the first magnetic attraction part 130 and the second magnetic attraction part 230 attract each other, so that the movable seat 200 can be stably placed on the base 100. Moreover, an angle is formed between the first side 110 and the second side 120, so that the base 100 can position the movable seat 200 in two directions, so that the movable seat 200 can be stably placed on the base 100 and the positional deviation of the movable seat 200 is reduced.

[0035] The movable seat 200 is fixedly connected to a hanging pin 240. One end of the first spring 320 is connected to the base 100, and the other end is connected to the movable seat 200, so that the first spring 320 can drive the hanging pin 240 to abut against the upper surface of the base 100, so that the base 100 can support the weight of the movable seat 200 and the laser head 420 without the first magnetic suction part 130 and the second magnetic suction part 230 continuously supporting the weight of the laser head 420, so that the movable seat 200 can be stably placed on the base 100.

[0036] When the robotic arm 410 drives the laser head 420 to move normally, the first magnetic attraction part 130 and the second magnetic attraction part 230 can attract each other, so that the first connecting surface 210 is attached to the first side surface 110 and the second connecting surface 220 is attached to the second side surface 120. Moreover, the first spring 320 drives the hanging pin 240 to abut against the upper end surface of the base 100, so that the movable seat 200 can be stably placed on the base 100, which facilitates the stable movement of the laser head 420.

[0037] When the laser head 420 collides with the workpiece or fixture, the movable seat 200 will shift, stretching the first spring 320 and causing the second magnetic suction part 230 to slide on the first magnetic suction part 130. This causes the hanging pin 240 to separate from the upper end face of the base 100, allowing the first magnetic suction part 130 and the second magnetic suction part 230 to separate. The movable seat 200 and the laser head 420 can then detach, avoiding a hard collision and preventing damage to the laser head 420 and the workpiece. Furthermore, when the movable seat 200 detaches, the first spring 320 can buffer the impact force of the fall, reducing the possibility of damage to the laser head 420. In addition, a pull rope 310 is connected between the base 100 and the movable seat 200, which can prevent the movable seat 200 from falling and damaging the laser head 420, thus improving reliability.

[0038] It should be noted that when the laser head 420 collides with the workpiece or fixture, the force between the base 100 and the movable seat 200 is greater than the attraction of the first magnetic part 130 and the second magnetic part 230, allowing the movable seat 200 to slide on the base 100, thereby preventing damage to the laser head 420. After the collision ends, the first spring 320 resets and pulls the movable seat 200 back onto the base 100, eliminating the need for manual reset and improving ease of use.

[0039] The first magnetic attraction part 130 and the second magnetic attraction part 230 can both be permanent magnets, electromagnets, etc., which will not be described in detail here.

[0040] Specifically, refer to Figure 1Two first springs 320 are provided, corresponding to the first side 110 and the second side 120 respectively. The two ends of each first spring 320 are fixed to the base 100 and the movable seat 200 respectively by fasteners 321, and the two fasteners 321 are staggered vertically. By staggering the two fasteners 321 on the base 100 and the movable seat 200, the first spring 320 is inclined, allowing it to pull the movable seat 200 closer to the base 100. This ensures the hanging pin 240 is stably abutted against the base 100, stabilizing the movable seat 200 on the base 100. Furthermore, it allows the first magnetic attraction part 130 and the second magnetic attraction part 230 to be stably attracted, thereby improving the positional stability of the movable seat 200 on the base 100 and reducing wobbling.

[0041] In addition, the number of first springs 320 is set to two. By setting two first springs 320 to correspond to the first side 110 and the second side 120 respectively, the two first springs 320 can cooperate to balance the force on the movable seat 200, so that the movable seat 200 can be stabilized on the base 100, reducing position sway and improving reliability.

[0042] Specifically, refer to Figure 2 and Figure 3 The anti-fall component 300 also includes an adjusting seat 330, an adjusting rod 340, and a second spring 350. The adjusting seat 330 is fixedly connected to the lower end of the base 100. The adjusting rod 340 passes through the adjusting seat 330. The two ends of the second spring 350 are fixedly connected to the adjusting rod 340 and the movable seat 200, respectively. A nut 341 is threadedly connected to the adjusting rod 340. The nut 341 is located on the side of the adjusting seat 330 away from the second spring 350. The adjusting rod 340 passes through the adjusting seat 330, and the nut 341 is threadedly connected to the adjusting rod 340. By fixing one end of the second spring 350 to the adjusting rod 340 and the other end to the movable seat 200, the second spring 350 can pull the nut 341 to abut against the side of the adjusting seat 330 away from the second spring 350, and the movable seat 200 can move towards the adjusting seat 330, thereby stabilizing the movable seat 200 on the base 100 via the hanging pin 240.

[0043] In addition, the nut 341 and the adjusting rod 340 are threadedly connected. By rotating the nut 341, the nut 341 can be moved along the axial direction of the adjusting rod 340, thereby quickly adjusting the position of the adjusting rod 340 on the adjusting seat 330. This facilitates the adjustment of the tension of the second spring 350, and makes it easier to adjust the elastic force required for the separation of the movable seat 200 and the base 100, thus adapting to processing requirements.

[0044] It should be noted that, referring to Figure 5 The movement speed of the robotic arm 410 driving the laser head 420 needs to match the processing requirements of the workpiece. By setting the nut 341, it can move axially on the adjusting rod 340, which can quickly adjust the tension of the second spring 350, so that the movable seat 200 can be stably placed on the base 100 without falling off. Moreover, the laser head 420 can be quickly dislodged in case of accidental collision, thus improving reliability.

[0045] Specifically, refer to Figure 1 and Figure 2 The number of nuts 341 is set to two, and the two nuts 341 abut against each other. By setting the number of nuts 341 to two, and the two nuts 341 abutting against each other, the vibration of the adjusting rod 340 caused by the collision of the laser head 420, the vibration during the operation of the equipment, and the loosening and displacement that may occur after long-term use can be prevented. This ensures that the initial tension of the second spring 350 remains stable, and improves the reliability and stability of the laser head protection mechanism under complex working conditions.

[0046] Meanwhile, the two nuts 341 also make it easier for operators to accurately and stably adjust the initial state of the second spring 350. When adjustment is needed, first loosen the outer nut 341, then rotate the inner nut 341 to adjust to the appropriate position, and finally tighten the outer nut 341 to achieve reliable locking. The operation is simple and the adjustment accuracy is high, which enhances the ease of use of the laser head protection mechanism.

[0047] Understandably, referring to Figures 2 to 4 The anti-fall component 300 also includes a detection component 360, which includes a first detection element 361 and a second detection element 362. The first detection element 361 is fixedly connected to the base 100, and the second detection element 362 is fixedly connected to the movable seat 200. The first detection element 361 and the second detection element 362 correspond to each other, and the first detection element 361 and the second detection element 362 cooperate to detect the relative position of the base 100 and the movable seat 200. The detection component 360 is electrically connected to the laser head 420. The first detection element 361 is fixedly connected to the base 100, and the second detection element 362 is fixedly connected to the movable seat 200. By setting the first detection element 361 and the second detection element 362 to correspond, the first detection element 361 and the second detection element 362 cooperate to detect the relative position of the base 100 and the movable seat 200.

[0048] When the laser head 420 is working normally, the first detection element 361 and the second detection element 362 can continuously provide feedback signals indicating that the movable seat 200 and the base 100 are in a stable and normal state, ensuring the stable operation of the laser cutting operation.

[0049] When the laser head 420 is accidentally struck, the first detection element 361 and the second detection element 362 separate, which can provide feedback on the separation status of the movable seat 200 and the base 100, so that the laser head 420 stops working and avoids further damage to the equipment or affecting the cutting quality due to the laser head 420 being in an abnormal state.

[0050] It should be noted that the detection component 360 also includes a controller. The first detection component 361, the second detection component 362, and the laser head 420 are all electrically connected to the controller. When the first detection component 361 and the second detection component 362 are in contact, the controller can control the laser head 420 to turn on; when the first detection component 361 and the second detection component 362 are separated, the controller can control the laser head 420 to turn off.

[0051] Among them, the first detection element 361 and the second detection element 362 can be contact sensors, infrared sensors, ultrasonic sensors, etc., and the controller can be a microcontroller, programmable logic controller, industrial control computer, etc., which will not be described in detail here.

[0052] Specifically, refer to Figures 2 to 4 The number of detection components 360 is set to three, which are respectively arranged on the first side 110, the second side 120, and the upper surface of the base 100. These three detection components 360 can sensitively detect the displacement changes of the movable seat 200 in three-dimensional space, enabling the laser head 420 to be quickly detected in abnormal states under various complex collision conditions, allowing for timely shutdown of the laser head 420 and improving the response sensitivity and reliability of the laser head protection mechanism to accidental collisions.

[0053] Understandably, referring to Figure 1 and Figure 2 The number of pull ropes 310 is set to multiple, with at least one pull rope 310 corresponding to the first connecting surface 210 and the second connecting surface 220. By setting at least one pull rope 310 corresponding to the first connecting surface 210 and the second connecting surface 220, the multiple pull ropes 310 can cooperate to limit the position of the movable seat 200 from two directions. When the movable seat 200 falls from the base 100, the multiple pull ropes 310 can effectively disperse the stress generated by external forces such as collision and vibration, avoid the single pull rope 310 from breaking due to excessive force, and reduce the shaking amplitude of the laser head 420 when it falls, reduce the possibility of damage to the laser head 420, and improve reliability.

[0054] Understandably, referring to Figure 1 and Figure 4The number of pins 240 is set to multiple, with at least one pin 240 corresponding to the first connecting surface 210 and the second connecting surface 220. The multiple pins 240 are respectively arranged on the first connecting surface 210 and the second connecting surface 220 so that the multiple pins 240 cooperate to position the movable seat 200 on the base 100, prevent the movable seat 200 from shaking on the base 100, improve the positional stability of the movable seat 200, and the multiple pins 240 can distribute the weight of the movable seat 200 and the laser head 420, reduce the load on the individual pins 240, slow down the wear of the pins 240, help extend the service life and improve reliability.

[0055] Understandably, referring to Figure 2 and Figure 5 The first side 110 and the second side 120 are perpendicular to each other. The angle between the first side 110 and the second side 120 is 90 degrees, so that the two first magnetic suction parts 130 are arranged perpendicular to each other. The cooperation between the first magnetic suction parts 130 and the second magnetic suction parts 230 can improve the positional stability of the base 100 and the movable seat 200, help reduce the positional displacement of the movable seat 200 on the base 100, adapt to the attraction direction of the first magnetic suction parts 130 and the second magnetic suction parts 230, thereby improving the contact stability between the first side 110 and the first connecting surface 210, and between the second side 120 and the second connecting surface 220, and thus improving the positional stability of the laser head 420.

[0056] Understandably, referring to Figure 5 The laser cutting machine of the second aspect of this utility model includes the laser head protection mechanism of the first aspect of this utility model. The laser head 420 can be driven to move by the robotic arm 410 to perform cutting operations on the workpiece. A laser head protection mechanism is provided between the robotic arm 410 and the laser head 420, so that in the event of an accidental collision, the laser head 420 can quickly separate from the robotic arm 410, reducing collision damage to the laser head 420 and helping to improve the reliability of the laser cutting machine.

[0057] Since the laser cutting machine of this utility model includes all the technical features of the laser head protection mechanism described above, it also has the beneficial effects of all the above embodiments, which will not be repeated here.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A laser head protection mechanism, characterized in that, include: A base is fixedly connected to a robotic arm. The base is provided with a first side and a second side, which form an angle between the first side and the second side. Both the first side and the second side are provided with a first magnetic attraction part. A movable base is fixedly connected to the laser head. The movable base is provided with a first connecting surface and a second connecting surface. After assembly, the first connecting surface is attached to the first side surface, and the second connecting surface is attached to the second side surface. A second magnetic attraction part is provided on the first connecting surface and the second connecting surface, and the first magnetic attraction part and the second magnetic attraction part attract each other. The anti-fall component includes a pull rope and a first spring. The two ends of the pull rope are respectively fixed to the base and the movable seat. The movable seat is fixedly connected to a hanging pin. The two ends of the first spring are respectively fixed to the base and the movable seat. The first spring is used to drive the hanging pin to abut against the upper surface of the base.

2. The laser head protection mechanism according to claim 1, characterized in that, The number of the first springs is set to two, with the two first springs corresponding to the first side and the second side respectively. The two ends of the first springs are fixed to the base and the movable seat respectively by fasteners, and the two fasteners are staggered in the vertical direction.

3. The laser head protection mechanism according to claim 1, characterized in that, The anti-fall component also includes an adjusting seat, an adjusting rod, and a second spring. The adjusting seat is fixedly connected to the lower end of the base. The adjusting rod passes through the adjusting seat. The two ends of the second spring are fixedly connected to the adjusting rod and the movable seat, respectively. The adjusting rod is threaded with a nut, which is arranged on the side of the adjusting seat away from the second spring.

4. The laser head protection mechanism according to claim 3, characterized in that, The number of nuts is set to two, and the two nuts abut against each other.

5. The laser head protection mechanism according to claim 1, characterized in that, The anti-fall component also includes a detection component, which includes a first detection element and a second detection element. The first detection element is fixedly connected to the base, and the second detection element is fixedly connected to the movable seat. The first detection element corresponds to the second detection element, and the first detection element and the second detection element cooperate to detect the relative position of the base and the movable seat. The detection component is electrically connected to the laser head.

6. The laser head protection mechanism according to claim 5, characterized in that, The number of detection components is set to three, and the three detection components are respectively arranged on the first side, the second side and the upper surface of the base.

7. The laser head protection mechanism according to claim 6, characterized in that, The number of pull ropes is set to multiple, and the first connecting surface and the second connecting surface correspond to at least one pull rope.

8. The laser head protection mechanism according to claim 1, characterized in that, The number of the pins is set to multiple, and the first connecting surface and the second connecting surface correspond to at least one pin.

9. The laser head protection mechanism according to claim 1, characterized in that, The first side and the second side are perpendicular to each other.

10. A laser cutting machine, characterized in that, It includes a laser head protection mechanism as described in any one of claims 1 to 9.

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