Self-adaptive focusing cutting head of laser cutting machine

Abstract

The invention discloses a laser cutting machine self-adaptive focusing cutting head, and relates to the technical field of laser cutting machines, the laser cutting machine self-adaptive focusing cutting head comprises a mounting seat and an adjusting assembly, one end of the upper part of the mounting seat is provided with a base, the bottom of the base is connected with a lens barrel, and the center of the interior of the lens barrel is slidably connected with a focusing lens group; the adjusting assembly is connected to the outer side of the focusing lens set and comprises a motor. Before a plate is placed, a motor drives a worm, a worm gear and a gear transmission system to drive a rotating sleeve to rotate, a convex ring pushes a roller, the moving direction of a vertical rod is limited through a fixing ring, the vertical rod moves upwards by a certain distance, and the situation that the plate placing operation is interfered due to the fact that the position of an ejector rod is too low is avoided; the roller falls down from the highest position of the convex ring under the action of gravity, the ejector rod is in contact with the plate, and the vertical rod is connected with the focus lens group through the protective sleeve, so that the height change can synchronously adjust the position of the focus lens group.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting machines, and in particular to an adaptive focusing cutting head for a laser cutting machine. Background Art

[0002] The laser cutting machine focuses the laser emitted from the laser into a high-power density laser beam through the optical path system. The laser beam is irradiated to the surface of the workpiece, causing the workpiece to reach the melting point or boiling point and fuse it, thereby achieving the cutting function.

[0003] For example, the invention with publication number CN116689949B discloses an adaptive focusing cutting head for laser cutting machines. When in use, the invention can realize the up and down movement of the vertical tube and the lens barrel through the rotation of the output shaft of the stepping motor in the displacement mechanism and the mutual cooperation between the screw and the slider, thereby realizing the precise adjustment of the position of the focusing lens, replacing manual adjustment and improving the work efficiency of the user. However, when focusing, this type of equipment must know the specific thickness of the plate in advance, otherwise it is not convenient to control the specific position of the focusing lens to be moved in order to move the focus to the surface of the plate, resulting in the need for additional precise measurement operations during use, which affects the cutting efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a laser cutting machine adaptive focusing cutting head to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive focusing cutting head for a laser cutting machine, comprising a mounting seat and an adjusting assembly, wherein a base is arranged at one end of the upper portion of the mounting seat, and a lens barrel is connected to the bottom of the base, a focusing lens group is slidably connected to the inner center of the lens barrel, and the adjusting assembly is connected to the outer side of the focusing lens group, the adjusting assembly comprises a motor, a motor is fixed to the top of the mounting seat, and a worm is connected to one end of the motor, a worm wheel is meshed with one side of the worm, and a rotating shaft is fixed inside the worm wheel, and the rotating shaft is rotatably connected to the mounting seat, a gear is fixed to the bottom of the rotating shaft, and a gear ring is meshed with the outer side of the gear, a rotating sleeve is fixed inside the gear ring, a convex ring is arranged at the inner upper end of the rotating sleeve, and a roller is arranged on one side of the convex ring, one end of the roller is rotatably connected to a vertical rod, and a fixing ring is slidably connected to the outer side of the upper end of the vertical rod, and the fixing ring is fixedly connected to the lens barrel, a protective sleeve is fixed to the outer side of the lower end of the vertical rod, and a top rod is rotatably connected to the lower end of the vertical rod.

[0006] Furthermore, the convex ring is composed of two convex parts and two straight parts, and the convex part of the convex ring is triangular.

[0007] Furthermore, the rotating sleeve is rotatably connected to the mounting seat, and the rotating sleeve is also rotatably connected to the fixing ring.

[0008] Furthermore, the protective sleeve is fixedly connected to the focusing lens group and is slidably connected to the lens barrel.

[0009] Furthermore, a collimation protection mirror is arranged at the upper end inside the lens barrel, and a collimation lens group is fixed in the upper middle part inside the lens barrel. A focusing protection mirror is arranged at the lower end inside the mounting seat, and a cutting protection mirror is arranged below the focusing protection mirror. A nozzle is arranged at the bottom of the lens barrel.

[0010] Furthermore, a locking component is arranged on the outer side of the fixing ring, and the locking component includes a guide groove. Guide grooves are symmetrically formed on the outer side of the fixing ring, and a slider is slidably connected inside the guide groove. One end of the slider is rotatably connected with a pulley.

[0011] Furthermore, a limiting ring is slidably connected inside the outer side of the fixing ring, and the limiting ring is fixedly connected to the rotating sleeve. A rubber pad is arranged on the other side of the slider. Anti-slip grooves are equidistantly formed on the upper side of one side of the vertical rod. Magnets are fixed at both the upper and lower ends of one side of the slider.

[0012] Furthermore, a folding component is arranged on the outer side of the lower part of the protective sleeve. The folding component includes a limiting block. The limiting block is arranged at the lower inner part of the rotating sleeve. Limiting blocks are symmetrically arranged on the outer side of the lower part of the protective sleeve, and a spring seat is connected to the end of the limiting block, and a limiting frame is connected to the end of the spring seat.

[0013] Furthermore, a sliding rod is fixed inside one end of the limiting frame. A guiding hole is formed inside the upper end of the ejector rod. A ball is arranged inside one end of the limiting frame, and the ball is in contact with the limiting block.

[0014] Furthermore, the guiding hole is strip-shaped, and the width of the guiding hole is equal to the diameter of the sliding rod, and the sliding rod is slidably connected to the ejector rod through the guiding hole.

[0015] The present invention provides a laser cutting machine self-adaptive focusing cutting head, which has the following beneficial effects:

[0016] 1. Before placing the plate, the present invention drives the worm, worm gear and gear transmission system through the motor to drive the rotating sleeve to rotate, so that the convex ring pushes the roller, and the movement direction of the vertical rod is restricted by the fixing ring, so that it moves up a certain distance, avoiding the position of the ejector rod being too low and interfering with the plate placing operation. After the plate is placed, the motor continues to work, and the roller falls from the highest point of the convex ring under the action of gravity, and the ejector rod contacts the plate. Since the vertical rod is connected to the focusing lens group through the protective sleeve, the position of the focusing lens group will be synchronously adjusted with the change of its height, so that the focal point position automatically matches the top surface of the plate with the change of height, thus realizing self-adaptive focusing without detecting the thickness of the plate, simplifying the operation process and improving the focusing efficiency.

[0017] 2. The inner concave portion of the limit ring of the present invention cooperates with the convex portion of the convex ring to prevent the slider from squeezing the vertical rod when the roller moves up, ensuring that the focusing lens group is adaptively adjusted without interference, and when the roller moves to the straight portion of the convex ring, the inner convex portion of the limit ring contacts the pulley, driving the slider to slide, so that the rubber pad fits with the anti-slip groove of the vertical rod to lock the height of the vertical rod, so that the height of the focusing lens group can be automatically locked. Combined with the self-locking structure of the worm gear, the displacement of the rotating sleeve is prevented, which is beneficial to enhance the stability of the subsequent cutting process. When refocusing according to different plates, when the concave portion of the limit ring is reset, the magnet will adsorb the iron limit ring to release the restriction of the vertical rod, thereby realizing rapid refocusing and improving the adaptability of the equipment.

[0018] 3. In the focusing process of the present invention, the limit block will squeeze the limit frame to shrink the spring seat, and the slide rod will push the top rod through the guide hole to maintain a vertical state to prevent the top rod from rotating. At the same time, during the vertical movement of the top rod, the ball will reduce the friction loss between the limit frame and the limit block. After the height of the focusing lens group is subsequently locked, the rotating sleeve continues to rotate to disengage the ball from the limit block, the spring seat pushes the limit frame to reset, and the slide rod drives the top rod to rotate upward and separate from the plate. This can prevent the top rod from rubbing against the plate during cutting and causing excessive wear, and prevent the accuracy of subsequent adaptive focusing from being affected due to excessive wear on the bottom of the top rod, which is beneficial to extending the service life of the adjustment component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an adaptive focusing cutting head for a laser cutting machine according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a rotating sleeve of an adaptive focusing cutting head of a laser cutting machine according to the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of a lens barrel of an adaptive focusing cutting head for a laser cutting machine according to the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of an adjustment component of an adaptive focusing cutting head of a laser cutting machine according to the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a rotating sleeve of a laser cutting machine adaptive focusing cutting head viewed from above according to the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of a locking component of an adaptive focusing cutting head of a laser cutting machine according to the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the folding component part of the adaptive focusing cutting head of a laser cutting machine according to the present invention.

[0026] In the figure: 1, mounting base; 2, base; 3, lens barrel; 4, collimation protection lens; 5, collimation lens group; 6, focusing lens group; 7, focusing protection lens; 8, cutting protection lens; 9, adjustment assembly; 901, motor; 902, worm; 903, worm wheel; 904, rotating shaft; 905, gear; 906, gear ring; 907, rotating sleeve; 908, convex ring; 909, roller; 910, vertical rod; 911, fixing ring; 91 2. Protective sleeve; 913. Push rod; 10. Nozzle; 11. Locking assembly; 1101. Guide groove; 1102. Sliding block; 1103. Pulley; 1104. Limiting ring; 1105. Rubber pad; 1106. Anti-slip groove; 1107. Magnet; 12. Folding assembly; 1201. Limiting block; 1202. Spring seat; 1203. Limiting frame; 1204. Sliding rod; 1205. Guide hole; 1206. Ball bearing. DETAILED DESCRIPTION

[0027] See also Figures 1 to 4 The present invention provides a technical solution: an adaptive focusing cutting head for a laser cutting machine, comprising a mounting seat 1 and an adjusting component 9, wherein a base 2 is arranged at one end of the upper portion of the mounting seat 1, and a lens barrel 3 is connected to the bottom of the base 2, a focusing lens group 6 is slidably connected to the inner center of the lens barrel 3, and the adjusting component 9 is connected to the outer side of the focusing lens group 6, and the adjusting component 9 comprises a motor 901, a motor 901 is fixed to the top of the mounting seat 1, and a worm 902 is connected to one end of the motor 901, a worm gear 903 is meshed on one side of the worm gear 902, and a rotating shaft 904 is fixed inside the worm gear 903, and the rotating shaft 904 is rotatably connected to the mounting seat 1, a gear 905 is fixed to the bottom of the rotating shaft 904, and a gear ring 906 is meshed on the outer side of the gear 905, a rotating sleeve 907 is fixed inside the gear ring 906, a convex ring 908 is arranged on the inner upper end of the rotating sleeve 907, and a roller 90 is arranged on one side of the convex ring 908 9. One end of the roller 909 is rotatably connected to a vertical rod 910, and a fixing ring 911 is slidably connected to the outer side of the upper end of the vertical rod 910, and the fixing ring 911 is fixedly connected to the lens barrel 3. A protective sleeve 912 is fixed to the outer side of the lower end of the vertical rod 910, and a top rod 913 is rotatably connected to the lower end of the vertical rod 910. The convex ring 908 consists of two convex parts and two straight parts, and the convex part of the convex ring 908 is triangular. The rotating sleeve 907 is rotatably connected to the mounting seat 1, and the rotating sleeve 907 is also rotatably connected to the fixing ring 911. The protective sleeve 912 is fixedly connected to the focusing lens group 6, and the protective sleeve 912 is slidably connected to the lens barrel 3. A collimating protective lens 4 is arranged on the inner upper end of the lens barrel 3, and a collimating lens group 5 is fixed to the inner middle upper part of the lens barrel 3. A focusing protective lens 7 is arranged on the inner lower end of the mounting seat 1, and a cutting protective lens 8 is arranged below the focusing protective lens 7. A nozzle 10 is arranged at the bottom of the lens barrel 3.

[0028] The specific operation is as follows: start the motor 901, so that it drives the rotating sleeve 907 to rotate through the worm 902, the worm wheel 903, the rotating shaft 904, the gear 905 and the gear ring 906, so that the convex ring 908 rotates counterclockwise, which will push the roller 909. At the same time, the fixed ring 911 will limit the moving direction of the vertical rod 910, so that the vertical rod 910 can move up a distance to avoid the lower push rod 913 from being too low to cause obstruction and affect the normal placement operation of the plate. After placing the plate, keep the motor 901 working. Under the action of gravity, the roller 909 can fall from the highest point of the convex ring 908, and the push rod 913 can connect The touch plate, and since the vertical rod 910 is fixedly connected to the focusing lens group 6 through the protective cover 912, when the height of the vertical rod 910 changes, the height of the focusing lens group 6 can be changed. At the same time, the collimating lens group 5 will convert the light beam into vertical parallel light. Therefore, when the height of the focusing lens group 6 changes, the focal position after focusing will also change synchronously, and the bottom height of the top rod 913 when it is vertical is on the same horizontal plane as the focal point of the focusing lens group 6. Therefore, when the bottom of the top rod 913 contacts the top surface of the plate, the height of the focusing lens group 6 can be adaptively adjusted, thereby achieving the effect of automatic focusing, without the need to additionally detect the thickness of the plate, which is more convenient.

[0029] See also Figure 2 , Figures 5 and 6 , a locking assembly 11 is provided on the outer side of the fixing ring 911, and the locking assembly 11 includes a guide groove 1101, a guide groove 1101 is symmetrically provided on the outer side of the fixing ring 911, and a slider 1102 is slidably connected inside the guide groove 1101, and a pulley 1103 is rotatably connected inside one end of the slider 1102, a limit ring 1104 is slidably connected inside the outer side of the fixing ring 911, and the limit ring 1104 is fixedly connected to the rotating sleeve 907, a rubber pad 1105 is arranged on the other side of the slider 1102, an anti-slip groove 1106 is equidistantly provided on the upper end of one side of the vertical rod 910, and magnets 1107 are fixed to the upper and lower ends of one side of the slider 1102;

[0030] The specific operation is as follows: since the inner concave portion of the limiting ring 1104 corresponds to the convex portion of the convex ring 908, and the inner convex portion of the limiting ring 1104 corresponds to the straight portion of the convex ring 908, when the convex ring 908 drives the roller 909 to move upward, since the slider 1102 will not be squeezed by an external force, it will not limit the vertical rod 910, thereby avoiding interference with the adaptive adjustment operation of the focusing lens group 6, and after the height of the focusing lens group 6 is adjusted, as the rotating sleeve 907 continues to rotate counterclockwise, the roller 909 will move to the straight portion of the convex ring 908, and the inner convex portion of the limiting ring 1104 will contact the pulley 1103, thereby driving the slider 1102 to slide in the guide groove 1101, so that it moves toward the vertical rod 910, and finally makes the glue The pad 1105 fits tightly with the anti-skid groove 1106 on the vertical rod 910 to fix the vertical rod 910, so as to realize adaptive height adjustment of the focusing lens group 6 and automatically lock its height. The self-locking structure formed by the worm 902 and the worm wheel 903 is used to prevent the rotating sleeve 907 from rotating, so as to further improve the stability in the subsequent cutting process. When readjustment is required when cutting different plates, when the recess on the limit ring 1104 moves back to the pulley 1103, the magnet 1107 will absorb the iron limit ring 1104, so that the rubber pad 1105 is automatically separated from the anti-skid groove 1106, and the restriction on the vertical rod 910 is quickly released, so that it can fall freely under gravity for re-focusing operation.

[0031] See also Figure 5 and Figure 7 A folding assembly 12 is arranged on the outer side of the lower part of the protective sleeve 912, and the folding assembly 12 includes a limit block 1201. The limit block 1201 is arranged on the inner lower part of the rotating sleeve 907. A spring seat 1202 is symmetrically arranged on the outer side of the lower part of the protective sleeve 912, and the end of the spring seat 1202 is connected to the limit frame 1203. A slide bar 1204 is fixed inside one end of the limit frame 1203. A guide hole 1205 is opened inside the upper end of the push rod 913. A ball 1206 is arranged inside one end of the limit frame 1203, and the ball 1206 is fitted with the limit block 1201. The guide hole 1205 is in the shape of a long strip, and the width of the guide hole 1205 is equal to the diameter of the slide bar 1204, and the slide bar 1204 is slidably connected with the push rod 913 through the guide hole 1205.

[0032] The specific operation is as follows. During the focusing process, the limit block 1201 will squeeze the limit frame 1203, causing the spring seat 1202 to contract. Then, the sliding rod 1204 will push the ejector rod 913 through the guide hole 1205, making it fit against the lower side of the vertical rod 910 to prevent it from rotating. At the same time, the limit block 1201 is relatively long, so when the height of the vertical rod 910 changes, the ejector rod 913 can still be kept vertical, which is beneficial to maintaining the stability during the focusing process. Meanwhile, the ball 1206 can reduce the wear between the limit frame 1203 and the limit block 1201. After the adaptive focusing and locking the height of the focusing lens group 6, as the rotating sleeve 907 rotates, the ball 1206 will move away from the limit block 1201. At this time, the spring seat 1202 will push the limit frame 1203, causing the sliding rod 1204 to slide inside the guide hole 1205, and then drive the ejector rod 913 to rotate upward, separating the end of the ejector rod 913 from the top surface of the plate. This can avoid the sliding wear between the bottom of the ejector rod 913 and the plate during the subsequent moving cutting process, prevent the excessive wear of the bottom of the ejector rod 913 from affecting the accuracy during the subsequent adaptive focusing, and is beneficial to extending the service life of the adjustment component 9.

[0033] In summary, for this self - adaptive focusing cutting head of a laser cutting machine, during use, first start the motor 901, which drives the rotating sleeve 907 to rotate counterclockwise through the worm 902, worm gear 903, rotating shaft 904, gear 905 and gear ring 906. Secondly, the limit block 1201 will squeeze the limit frame 1203, causing the spring seat 1202 to contract. Then, the sliding rod 1204 will push the ejector rod 913 through the guide hole 1205, making it fit against the lower side of the vertical rod 910 to prevent it from rotating. At the same time, the concave part on the limit ring 1104 will move to the pulley 1103, and the magnet 1107 will attract the iron - made limit ring 1104, causing the rubber pad 1105 to automatically separate from the anti - slip groove 1106, quickly releasing the restriction on the vertical rod 910. After that, the convex ring 908 rotates counterclockwise and will push the roller 909. At the same time, the fixed ring 911 will limit the moving direction of the vertical rod 910. Therefore, the vertical rod 910 can be lifted by a certain distance to avoid the position of the lower ejector rod 913 being too low to cause obstruction and affect the normal placement operation of the plate.

[0034] Next, after placing the plate, the motor 901 continues to work, and under the action of gravity, the roller 909 can fall from the highest point of the convex ring 908, and the top rod 913 can contact the plate. Since the vertical rod 910 is fixedly connected to the focusing lens group 6 through the protective cover 912, when the height of the vertical rod 910 changes, the height of the focusing lens group 6 can be changed. At the same time, the collimating lens group 5 will convert the light beam into vertical parallel light. Therefore, when the height of the focusing lens group 6 changes, the focal position after focusing will also change synchronously. , and the bottom height of the top rod 913 when it is in a vertical state is located on the same horizontal plane as the focus of the focusing lens group 6, so when the bottom of the top rod 913 contacts the top surface of the plate, the height of the focusing lens group 6 can be adaptively adjusted, thereby achieving an automatic focusing effect. At the same time, the limit block 1201 is relatively long, so when the height of the vertical rod 910 changes, the top rod 913 can also be kept vertical, which is conducive to maintaining stability during the focusing process. At the same time, the ball 1206 can reduce the wear of the limit frame 1203 and the limit block 1201;

[0035] Then, after the height of the focusing lens group 6 is adjusted, as the rotating sleeve 907 continues to rotate counterclockwise, the roller 909 will move to the straight part of the convex ring 908, and the inner convex part of the limit ring 1104 will contact the pulley 1103, thereby driving the slider 1102 to slide in the guide groove 1101 and move it toward the vertical rod 910, and finally the rubber pad 1105 is tightly fitted with the anti-skid groove 1106 on the vertical rod 910 to fix the vertical rod 910, so as to realize the height adaptive adjustment of the focusing lens group 6, automatically lock its height, and use the self-locking structure formed by the worm 902 and the worm wheel 903 to prevent the rotating sleeve 907 from rotating, so as to further improve the stability in the subsequent cutting process;

[0036] Finally, with the rotation of the rotating sleeve 907, the ball 1206 will move away from the limit block 1201. At this time, the spring seat 1202 will push the limit frame 1203, so that the slide rod 1204 can slide inside the guide hole 1205, which can drive the top rod 913 to rotate upward, so that its end is separated from the top surface of the plate, thereby avoiding sliding wear between the bottom of the top rod 913 and the plate during subsequent mobile cutting, and preventing the accuracy of subsequent adaptive focusing from being affected by excessive wear on the bottom of the top rod 913, which is beneficial to extending the service life of the adjustment component 9. During use, the collimation protection lens 4, the focusing protection lens 7, and the cutting protection lens 8 are used to protect the inside of the lens barrel 3.

[0037] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0038] Specific examples are used in this text to illustrate the principles and implementation manners of the present invention. The description of the above examples is only for helping to understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limitation of literal expression and objectively existing infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A laser cutting machine adaptive focusing cutting head, characterized in that: The invention comprises a mounting seat (1) and an adjustment component (9), wherein a base (2) is arranged at one end of the upper part of the mounting seat (1), and a lens barrel (3) is connected to the bottom of the base (2), a focusing lens group (6) is slidably connected to the center of the lens barrel (3), and the adjustment component (9) is connected to the outside of the focusing lens group (6), and the adjustment component (9) comprises a motor (901), a motor (901) is fixed to the top of the mounting seat (1), and a worm (902) is connected to one end of the motor (901), a worm wheel (903) is meshed on one side of the worm wheel (902), and a rotating shaft (904) is fixed inside the worm wheel (903), and the rotating shaft (904) is rotatably connected to the mounting seat (1), and the rotating shaft (904) is rotatably connected to the mounting seat (1). A gear (905) is fixed at the bottom of the shaft (904), and a gear ring (906) is meshed on the outer side of the gear (905), a rotating sleeve (907) is fixed inside the gear ring (906), a convex ring (908) is arranged on the inner upper end of the rotating sleeve (907), and a roller (909) is arranged on one side of the convex ring (908), one end of the roller (909) is rotatably connected to a vertical rod (910), and a fixing ring (911) is slidably connected to the outer side of the upper end of the vertical rod (910), and the fixing ring (911) is fixedly connected to the lens barrel (3), a protective sleeve (912) is fixed on the outer side of the lower end of the vertical rod (910), and a top rod (913) is rotatably connected to the lower end of the vertical rod (910).

2. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: The convex ring (908) consists of two convex parts and two straight parts, and the convex part of the convex ring (908) is triangular.

3. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: The rotating sleeve (907) is rotatably connected to the mounting seat (1), and the rotating sleeve (907) is also rotatably connected to the fixing ring (911).

4. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: The protective sleeve (912) is fixedly connected to the focusing lens group (6), and the protective sleeve (912) is slidably connected to the lens barrel (3).

5. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: A collimating protective mirror (4) is arranged at the inner upper end of the lens barrel (3), and a collimating mirror group (5) is fixed at the inner middle upper part of the lens barrel (3); a focusing protective mirror (7) is arranged at the inner lower end of the mounting seat (1), and a cutting protective mirror (8) is arranged below the focusing protective mirror (7); and a nozzle (10) is arranged at the bottom of the lens barrel (3).

6. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: A locking assembly (11) is arranged on the outer side of the fixing ring (911), and the locking assembly (11) comprises a guide groove (1101). The guide grooves (1101) are symmetrically provided on the outer side of the fixing ring (911), and a slider (1102) is slidably connected inside the guide groove (1101), and a pulley (1103) is rotatably connected inside one end of the slider (1102).

7. The laser cutting machine adaptive focusing cutting head according to claim 6, characterized in that: The outer inner part of the fixed ring (911) is slidably connected to a limit ring (1104), and the limit ring (1104) is fixedly connected to the rotating sleeve (907). A rubber pad (1105) is arranged on the other side of the slider (1102). Anti-slip grooves (1106) are equidistantly provided on the upper end of one side of the vertical rod (910). Magnets (1107) are fixed on both upper and lower ends of one side of the slider (1102).

8. The laser cutting machine adaptive focusing cutting head according to claim 1, characterized in that: A folding assembly (12) is arranged on the outer side of the lower part of the protective sleeve (912), and the folding assembly (12) includes a limit block (1201). The limit block (1201) is arranged on the inner lower part of the rotating sleeve (907), and a spring seat (1202) is symmetrically arranged on the outer side of the lower part of the protective sleeve (912), and the end of the spring seat (1202) is connected to the limit frame (1203).

9. The laser cutting machine adaptive focusing cutting head according to claim 8, characterized in that: A sliding rod (1204) is fixed inside one end of the limiting frame (1203), a guide hole (1205) is opened inside the upper end of the push rod (913), and a ball (1206) is arranged inside one end of the limiting frame (1203), and the ball (1206) is in contact with the limiting block (1201).

10. The laser cutting machine adaptive focusing cutting head according to claim 9, characterized in that: The guide hole (1205) is in the shape of an elongated strip, and the width of the guide hole (1205) is equal to the diameter of the sliding rod (1204), and the sliding rod (1204) is slidably connected to the top rod (913) through the guide hole (1205).

Images