A self-rotating metal intelligent cutting system

Abstract

The application discloses a self-rotating metal intelligent cutting system, which comprises a support, the lower end surface of which is placed on the ground through a base, the upper end surface of the support is fixed with an outer ring sleeve, the outer ring sleeve is rotationally connected with a rotating ring, and the rotating ring is provided with a positioning plate; an adjusting assembly is installed on the positioning plate, and a laser cutter is installed on the adjusting assembly and is arranged towards the center of the outer ring sleeve; a lens changing mechanism is integrated in the laser cutter, and the lens changing mechanism is used for switching two different specifications of focusing lenses to transmit and focus laser beams.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting technology, specifically a self-rotating intelligent metal cutting system. Background Technology

[0002] In the traditional pipe bending industry, sawing equipment is mainly used to cut the bent pipes to obtain the final product that meets the dimensions. Since sawing involves applying external force to the saw blade and pressing the saw blade onto the pipe, this external force causes the pipe to deform. The originally round pipe is pressed into an ellipse and cannot be used normally. Therefore, subsequent processes such as deburring and rounding must be added.

[0003] Laser cutting inherently prevents tube deformation and produces a smooth cut without the need for deburring. This eliminates two steps compared to traditional sawing, saving customers labor costs. However, laser-cutting straight tube equipment is also common in the market. This method primarily involves a stationary laser cutting head while the tube rotates to achieve a circumferential cut. The problem with this type of equipment is that the cutting surface must be at the center of rotation, meaning it can only cut straight tubes and is not well-suited for cutting curved tubes.

[0004] Furthermore, during the process of cutting bent pipes, traditional laser cutting machines are prone to slag and burrs due to the increased wall thickness at the bend. Additionally, the protective gas is easily blocked or dispersed at the bend, failing to effectively cover the cutting area, resulting in oxidation of the cut surface and affecting the cutting quality.

[0005] Therefore, it is necessary to provide a self-rotating intelligent metal cutting system to solve the problems mentioned in the background art. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-rotating intelligent metal cutting system, comprising: a support, the lower end of which is placed on the ground via a base, an outer ring fixed to the upper end of the support, a rotating ring rotatably connected inside the outer ring, and a positioning plate installed on the rotating ring;

[0007] An adjustment assembly is installed on the positioning plate, and a laser cutter is installed on the adjustment assembly facing the center of the outer ring.

[0008] The laser cutter integrates a lens-changing mechanism that switches between two different types of focusing lenses to transmit and focus the laser beam.

[0009] Furthermore, as a preferred embodiment, the outer wall of the rotating ring is provided with toothed grooves, and the bracket is provided with a driving part, which is connected to the rotating ring for transmission through gear meshing.

[0010] Furthermore, as a preferred embodiment, the adjustment assembly includes an outer support plate, which is fixed parallel to the positioning plate. A support frame is installed parallel to one side of the outer support plate, and a screw mechanism is rotatably provided on the outer support plate. The support frame is slidably assembled with the outer support plate through the screw mechanism.

[0011] Two side supports are symmetrically fixed on the support plate, and the laser cutter is installed between the two side supports.

[0012] Furthermore, as a preferred embodiment, a connecting frame is fixed to one side of the outer support plate. The connecting frame is configured as an arc-shaped structure and is arranged concentrically with the outer ring. A distance measuring sensor is fixed on the connecting frame.

[0013] Furthermore, preferably, the angle between the ranging sensor and the laser cutter is no greater than 25°.

[0014] Furthermore, as a preferred embodiment, each of the side supports is laterally fixed with an inner protective plate, and an L-shaped plate is rotatably connected to the inner protective plate, with the laser cutter fixed to the two L-shaped plates;

[0015] An adjusting rod is vertically slidably connected to the inner protective plate. A clamping block is fixed to the lower end of the adjusting rod, and a shaft pin is fixed to the side wall of the L-shaped plate. One end of the shaft pin extends into and is connected to the clamping block.

[0016] An adjusting sleeve is rotatably connected to the L-shaped plate. The adjusting sleeve is threaded to the upper end of the adjusting rod, and a transmission tooth is provided on the outer sleeve of the adjusting sleeve.

[0017] Furthermore, as a preferred embodiment, the lens changing mechanism includes a lens barrel, which is vertically and slidably disposed inside the laser cutter, and both the upper and lower ends of the collimating lens barrel are connected to internal springs;

[0018] The collimating lens tube has a sliding opening in the middle, and a calibration plate is slidably connected inside the sliding opening. Two lens slots are symmetrically arranged on the left and right sides of the calibration plate, and a focusing lens is respectively installed in each of the lens slots.

[0019] An inner support is horizontally fixed on one side of the lens barrel, and a propulsion unit is provided on the inner support. The telescopic end of the propulsion unit is connected to the calibration plate.

[0020] Furthermore, as a preferred embodiment, a cam is rotatably provided on the inner wall of the laser cutter, the cam has a sliding groove, and a positioning pin is fixed on the side wall of the lens barrel, the positioning pin being slidably connected to the sliding groove.

[0021] Furthermore, as a preferred embodiment, a laser head is vertically arranged below the laser cutter, and a sealing cylinder is rotatably sleeved around the laser head. Two vertically distributed air channels are symmetrically opened on the inner wall of the sealing cylinder, and a main air supply head and an auxiliary air supply head are respectively connected to the outside of each air channel.

[0022] The laser head has two symmetrically arranged air slots, one of which is radially connected to the interior of the laser head.

[0023] Another gas channel is provided below the gas groove, and an annular cavity is provided inside the lower end of the laser head. The gas channel is connected to the annular cavity, and an oblique outlet is provided below the annular cavity.

[0024] Furthermore, as a preferred embodiment, the sealing cylinder is fitted with external teeth, and a rack is horizontally slidably arranged below the laser cutter, the rack meshing with the external teeth; a linkage rod is vertically slidably connected to the end of the rack, and the upper end of the linkage rod is connected to the telescopic end of the propulsion unit.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] This invention employs a self-rotating laser cutting method to achieve efficient cutting of metal steel pipes. The laser cutter can effectively change the distance between the laser head and the steel pipe during adjustment, enabling laser cutting even if the steel pipe is not concentric with the outer ring, ensuring normal cutting operation. Furthermore, the adjustment component can adjust the angle between the laser cutter and the outer support plate via an L-shaped plate, maintaining perpendicularity to the cutting surface of the bent pipe during cutting. In particular, the laser cutter also features a lens-changing mechanism that can use two different specifications of focusing lenses. On one hand, different focal length lenses are suitable for cutting steel pipes with different wall thicknesses; on the other hand, the focusing lens can be quickly switched during the laser cutter's rotational cutting, adapting to thick-walled cutting at bends. Corresponding adjustments can also achieve protective gas center delivery or tilted delivery. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the adjustment component in this invention;

[0029] Figure 3 This is a schematic diagram of the structure of the laser cutter in this invention;

[0030] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0031] Figure 5 This is a schematic diagram of the internal structure of the laser head in this invention;

[0032] In the diagram: 1. Support; 11. Outer ring; 12. Rotating ring; 13. Positioning plate; 2. Adjustment assembly; 21. Outer support plate; 22. Support plate frame; 23. Lead screw mechanism; 24. Side support; 25. Inner protective plate; 26. L-shaped plate; 27. Adjusting rod; 28. L-shaped plate; 29. ​​Adjusting sleeve; 3. Laser cutter; 4. Lens changing mechanism; 41. Lens barrel; 42. Inner spring; 43. Calibration plate; 44. Focusing lens; 45. Propulsion unit; 46. Cam; 47. Positioning pin; 5. Connecting frame; 51. Distance sensor; 6. Laser head; 61. Sealing cylinder; 62. Air passage; 63. Main air supply head; 64. Auxiliary air supply head; 65. Air groove; 66. Annular cavity; 67. Inclined outlet; 68. External gear; 69. Rack. Detailed Implementation

[0033] Please see Figures 1-5 In this embodiment of the invention, a self-rotating intelligent metal cutting system includes: a support 1, the lower end of which is placed on the ground via a base (not shown in the figure), an outer ring 11 is fixed to the upper end of the support 1, a rotating ring 12 is rotatably connected inside the outer ring 11, and a positioning plate 13 is installed on the rotating ring 12.

[0034] An adjustment component 2 is installed on the positioning plate 13, and a laser cutter 3 facing the center of the outer ring is installed on the adjustment component 2; wherein, chain support connecting plates are also arranged laterally on both sides of the rotating ring 12, which can effectively support the cable drag chain of the laser cutter 3.

[0035] The laser cutter 3 integrates a lens changing mechanism 4, which switches between two different specifications of focusing lenses 44 to transmit and focus the laser beam. This setting allows for corresponding replacements for cutting steel pipes with different wall thicknesses. Moreover, the focusing lens with matching focal length can be automatically switched during the rotary cutting process. Especially for the bends of the pipe, when switching to a longer focal length, the depth of focus can be increased to ensure the consistency of the cut and avoid slag buildup on the slanted wall or bottom.

[0036] In this embodiment, the outer wall of the rotating ring 12 is provided with toothed grooves, and the bracket 1 is provided with a driving part (not shown in the figure). The driving part is connected to the rotating ring 12 through gear meshing. The driving part can drive the rotating ring 12 to rotate so that the laser cutter 3 starts cutting from the zero position of the outer ring sleeve 11. After one rotation, the steel pipe can be cut. Then the driving part drives the rotating ring 12 to rotate in the opposite direction to reset.

[0037] In a preferred embodiment, the adjustment assembly 2 includes an outer support plate 21, which is fixed parallel to the positioning plate 13. A support frame 22 is installed parallel to one side of the outer support plate 21, and a screw mechanism 23 is rotatably provided on the outer support plate 21. The support frame 22 is slidably assembled with the outer support plate 21 through the screw mechanism 23, thereby effectively adjusting the distance between the centers of the laser cutter 3 on the outer support plate 21.

[0038] Two side supports 24 are symmetrically fixed on the support plate 22, and the laser cutter 3 is installed between the two side supports 24.

[0039] In this embodiment, a connecting frame 5 is fixed on one side of the outer support plate 21. The connecting frame 5 is set as an arc-shaped structure and is arranged concentrically with the outer ring sleeve 11. A distance measuring sensor 51 is fixed on the connecting frame 5.

[0040] In this embodiment, the angle between the distance sensor 51 and the laser cutter 3 is no greater than 25°. The distance sensor 51 can be measured by ultrasonic ranging or laser ranging to effectively measure the distance between itself and the surface of the steel pipe. The distance sensor 51 is located on one side of the rotation direction of the laser cutter 3, so it can measure the distance to the steel pipe before the laser cutter 3. Thus, during the rotational cutting of the laser cutter 3, the lead screw mechanism 23 can be used to effectively adjust the working distance between itself and the steel pipe. When the laser cutter 3 is at the zero point position, the distance sensor 51 can return to the zero point position with the rotating ring 12. Thus, even if the steel pipe is not concentric with the outer ring, laser cutting of the steel pipe can still be achieved, ensuring normal cutting work. Compared with the prior art, there is no need for center positioning, which shortens the process time.

[0041] In this embodiment, an inner protective plate 25 is horizontally fixed on each side bracket 24, and an L-shaped plate 26 is rotatably connected to the inner protective plate 25. The laser cutter 3 is fixed to the two L-shaped plates 26.

[0042] An adjusting rod 27 is vertically slidably connected to the inner protective plate 25. A clamping block is fixed to the lower end of the adjusting rod 27, and a shaft pin 28 is fixed to the side wall of the L-shaped plate. One end of the shaft pin 28 extends into and is connected to the clamping block.

[0043] An adjusting sleeve 29 is rotatably connected to the L-shaped plate 26. The adjusting sleeve 29 is threadedly connected to the upper end of the adjusting rod 27. The adjusting sleeve 29 is fitted with transmission teeth. A double-headed worm gear can be rotatably arranged between the two transmission teeth. The double-headed worm gear drives the two transmission teeth to rotate synchronously, so that the adjusting sleeve 29 controls the adjusting rod to slide up and down through the threaded engagement. At this time, the L-shaped plate 26 and the inner protective plate 25 rotate relative to each other, which effectively changes the angle between the laser cutter 3 and the plane of the outer support plate 21, making it easier to form a bevel cut on the steel pipe cutting surface.

[0044] In a preferred embodiment, the lens changing mechanism 4 includes a lens barrel 41, which is vertically and slidably disposed inside the laser cutter 3, and the upper and lower ends of the collimating lens barrel 41 are both connected to an inner spring 42.

[0045] The collimating lens tube 41 has a sliding opening in the middle, and a calibration plate 43 is slidably connected inside the sliding opening. Two lens slots are symmetrically arranged on the calibration plate 43, and a focusing lens 44 is respectively installed in each of the lens slots.

[0046] An inner support is horizontally fixed on one side of the lens barrel 41. A propulsion unit 45 is provided on the inner support. The telescopic end of the propulsion unit 45 is connected to the calibration plate 43. Therefore, when the propulsion unit 45 is in a retracted or extended state, it can combine and assemble different focusing lenses 44 on the calibration plate 43 with the lens barrel 41 so that the laser beam can be focused and transmitted through the focusing lens 44. The laser cutter 3 uses the angle adjustment of its internal reflector so that the laser beam does not irradiate its surface when the focusing lens 44 is switched, thus achieving safe switching.

[0047] In this embodiment, a cam 46 is rotatably provided on the inner wall of the laser cutter 3. A sliding groove is provided on the cam 46, and a positioning pin 47 is fixed on the side wall of the lens barrel 41. The positioning pin 47 is slidably connected to the sliding groove, which can effectively adjust the vertical sliding of the lens barrel 41, thereby adjusting the focal position.

[0048] In this embodiment, a laser head 6 is vertically arranged below the laser cutter 3. A sealing cylinder 61 is rotatably sleeved around the laser head 6. Two vertically distributed air channels 62 are symmetrically opened on the inner wall of the sealing cylinder 61. A main air supply head 63 and a secondary air supply head 64 are respectively connected to the outside of each air channel 62. The main air supply head 63 mainly supplies 70% of the protective gas, while the secondary air supply head 64 is used to supply the remaining 30%.

[0049] Two air grooves 65 are symmetrically arranged inside the laser head 6. One of the air grooves 65 is radially connected to the inside of the laser head 3, and the protective gas can enter the laser head 3 through the air groove 65, thereby realizing the central delivery of protective gas. Meanwhile, the lower ends of the two air channels 62 on the sealing cylinder 61 are respectively connected to the two air grooves 65 in a sealed manner. When the sealing cylinder 61 is rotated and adjusted, it can switch the connection between the two air channels 62 and the two air grooves 65.

[0050] Another gas groove 65 has a gas guiding channel below it, and an annular cavity 66 is formed inside the lower end of the laser head 6. The gas guiding channel is connected to the annular cavity 66. An inclined outlet 67 is provided below the annular cavity 66. The protective gas in the gas groove 65 can enter the annular cavity 66 through the gas guiding channel, and then be ejected obliquely from the inclined outlet 67 to achieve eccentric and inclined delivery of protective gas. It should be noted that the inclined outlet 67 should face the laser cutting point and be located in the opposite direction of the cutting rotation direction. In this way, it can form a concentrated area of ​​protective gas in front of the laser cutting, thereby improving the cutting effect.

[0051] In this embodiment, the sealing cylinder 61 is fitted with external teeth 68, and a rack 69 is horizontally slidably arranged below the laser cutter 3, the rack 69 meshing with the external teeth; a linkage rod is vertically slidably connected to the end of the rack 69, and the upper end of the linkage rod is connected to the telescopic end of the propulsion unit 45. When the long focal length focusing lens 44 is switched to use, the air passage 62 corresponding to the main air supply head 63 is connected to the central channel of the laser cutter 3 through the air groove 65. At this time, a large amount of protective gas can be ejected directly towards the cutting point, and the protective gas flows rapidly and penetrates the melt. The pool solves the problem of incomplete cutting or slag buildup in thick-walled areas at bends and corners, while also resisting airflow scattering caused by the curved surface of the bend. The remaining portion is ejected at an angle through the inclined outlet 67, effectively forming an airflow curtain surrounding the cutting area. When the short focal length focusing lens 44 is switched to use, the air passage 62 corresponding to the main air supply head 63 is connected to the annular cavity 66 through the air groove 65. At this time, a large amount of protective gas is ejected at an angle through the inclined outlet 67, which can accelerate the discharge of molten slag and prevent overheating in thin-walled areas. The remaining portion is ejected directly from the center of the laser cutter 3 towards the cutting point, ensuring a stable airflow at the cutting point.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-rotating intelligent metal cutting system, characterized in that, It includes: The bracket (1) has its lower end face placed on the ground via a base. An outer ring sleeve (11) is fixed to the upper end face of the bracket (1). A rotating ring (12) is rotatably connected inside the outer ring sleeve (11). A positioning plate (13) is installed on the rotating ring (12). An adjustment assembly (2) is installed on the positioning plate (13), and a laser cutter (3) is installed on the adjustment assembly (2) facing the center of the outer ring. The laser cutter (3) integrates a lens changing mechanism (4), which switches between two different specifications of focusing lenses (44) to transmit and focus the laser beam; The adjustment assembly (2) includes an outer support plate (21), which is fixed parallel to the positioning plate (13). A support frame (22) is installed parallel to one side of the outer support plate (21), and a screw mechanism (23) is rotatably provided on the outer support plate (21). The support frame (22) is slidably assembled with the outer support plate (21) through the screw mechanism (23). Two side supports (24) are symmetrically fixed on the support frame (22), and the laser cutter (3) is installed between the two side supports (24); The lens changing mechanism (4) includes a lens tube (41), which is vertically and slidably disposed inside the laser cutter (3). The upper and lower ends of the lens tube (41) are connected to an inner spring (42). The lens barrel (41) has a sliding opening in the middle, and a calibration plate (43) is sealed and slidably connected inside the sliding opening. Two lens slots are symmetrically arranged on the calibration plate (43), and a focusing lens (44) is respectively installed in each of the lens slots. An inner support is horizontally fixed on one side of the lens tube (41), and a propulsion unit (45) is provided on the inner support. The telescopic end of the propulsion unit (45) is connected to the calibration plate (43).

2. The self-rotating intelligent metal cutting system according to claim 1, characterized in that: The outer wall of the rotating ring (12) is provided with toothed grooves, and the bracket (1) is provided with a driving part, which is connected to the rotating ring (12) for transmission through gear meshing.

3. The self-rotating intelligent metal cutting system according to claim 1, characterized in that: A connecting frame (5) is fixed on one side of the outer support plate (21). The connecting frame (5) is set as an arc structure and is arranged in the same circle as the outer ring (11). A distance measuring sensor (51) is fixed on the connecting frame (5).

4. The self-rotating intelligent metal cutting system according to claim 3, characterized in that: The angle between the ranging sensor (51) and the laser cutter (3) is no greater than 25°.

5. The self-rotating intelligent metal cutting system according to claim 1, characterized in that: Each side bracket (24) is horizontally fixed with an inner protective plate (25), and an L-shaped plate (26) is rotatably connected to the inner protective plate (25). The laser cutter (3) is fixed to the two L-shaped plates (26). An adjusting rod (27) is vertically slidably connected to the inner protective plate (25). A clamping block is fixed to the lower end of the adjusting rod (27), and a shaft pin (28) is fixed to the side wall of the L-shaped plate. One end of the shaft pin (28) extends into and is connected to the clamping block. An adjusting sleeve (29) is rotatably connected to the L-shaped plate (26). The adjusting sleeve (29) is threadedly connected to the upper end of the adjusting rod. The adjusting sleeve (29) is fitted with transmission teeth.

6. The self-rotating intelligent metal cutting system according to claim 1, characterized in that: A cam (46) is rotatably provided on the inner wall of the laser cutter (3). A sliding groove is provided on the cam (46), and a positioning pin (47) is fixed on the side wall of the lens barrel (41). The positioning pin (47) is slidably connected to the sliding groove.

7. The self-rotating intelligent metal cutting system according to claim 1, characterized in that: A laser head (6) is vertically arranged below the laser cutter (3). A sealing cylinder (61) is rotatably sleeved on the outside of the laser head (6). Two vertically distributed air passages (62) are symmetrically opened on the inner wall of the sealing cylinder (61). A main air supply head (63) and an auxiliary air supply head (64) are respectively connected to the outside of each air passage (62). Two air grooves (65) are symmetrically opened inside the laser head (6), one of which is radially connected to the inside of the laser head (3); Another gas groove (65) has a gas guiding channel below it, and an annular cavity (66) is provided inside the lower end of the laser head (6). The gas guiding channel is connected to the annular cavity (66), and an inclined outlet (67) is provided below the annular cavity (66).

8. The self-rotating intelligent metal cutting system according to claim 7, characterized in that: The sealing cylinder (61) is fitted with external teeth (68), and a rack (69) is horizontally slidably arranged below the laser cutter (3). The rack (69) meshes with the external teeth. A linkage rod is vertically slidably connected to the end of the rack (69), and the upper end of the linkage rod is connected to the telescopic end of the propulsion unit (45).

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