Numerical control laser cutting machine table for sofa metal frame

Abstract

The invention particularly relates to a numerical control laser cutting machine table for a sofa metal frame, which belongs to the technical field of numerical control laser cutting and comprises a laser cutting head assembly additionally arranged in a cutting machine cabinet, the laser cutting head assembly comprises a laser cutting head and a cooling assembly, and the cooling assembly is assembled on the laser cutting head and located on the side edge of the laser cutting head. Dividing a cutting area and a cooling area; the laser cutting head is used for conducting numerical control laser cutting on the sofa metal frame. After the sofa metal frame enters the cutting cabinet, the laser cutting head assembly uses a laser cutting head to cut the sofa metal frame in front, and the cooling assembly follows behind the laser cutting head and cools the sofa metal frame in a non-cutting area after being cut. And deformation of the sofa metal frame at the non-cooled cutting position caused by subsequent clamping, transferring and other operations is avoided.

Description

CNC laser cutting machine for sofa metal frame Technical Field

[0001] This invention relates to the field of CNC laser cutting technology, specifically to a CNC laser cutting machine for sofa metal frames. Background Technology

[0002] The metal frame of a sofa is the core load-bearing and structural component of a modern sofa, and its performance directly determines the overall stability, structural strength, and lifespan of the sofa. Compared to traditional wooden frames, metal frames, especially those welded from carbon steel square and round tubing, possess higher strength, rigidity, and resistance to deformation, better meeting the precision and durability requirements of modern sofas. Sofa frames are typically assembled and welded from multiple precisely cut metal tubing sections. The quality of the cut ends, dimensional accuracy, and geometric precision of these tubing sections are fundamental to ensuring the quality of subsequent welding processes and a seamless final frame structure. Therefore, high-precision, high-quality cutting of metal tubing is a crucial step in sofa metal frame manufacturing.

[0003] CNC laser cutting machines are currently one of the mainstream equipment for high-precision metal cutting. Their working principle involves focusing a high-energy-density laser beam onto the material surface using a focusing lens. This heats the metal in the irradiated area to a molten or even vaporized state in a very short time. Simultaneously, an auxiliary high-pressure gas coaxial with the laser beam blows away the molten or vaporized material, thus achieving cutting. This technology boasts significant advantages such as high cutting speed, good cut quality, high automation, and the ability to process complex shapes, making it ideal for the mass production and precision processing of metal frame tubing for sofas. To ensure stable cutting and protect the optical lenses inside the laser cutting head from high-temperature damage, modern laser cutting machines typically integrate cooling systems, such as water cooling, to cool the laser head.

[0004] Although CNC laser cutting technology has been widely used in sofa frame manufacturing, a significant challenge remains in actual processing: how to effectively control the heat-affected zone during the cutting process and prevent thermal deformation of the metal tubing due to localized high temperatures. Laser cutting is inherently a thermal processing procedure, relying on instantaneous localized ultra-high temperatures at the cutting point to remove material. However, the large amount of heat generated in this process is rapidly conducted to the surrounding base material, forming a "heat-affected zone." If the heat accumulates or diffuses unevenly, it can easily cause plastic deformation such as bending and twisting in the metal tubing, especially thin-walled tubing, severely affecting the precision of the frame components.

[0005] To address this issue, a common solution in existing technologies is to add a cooling structure to the cutting machine table specifically for the workpiece being processed. For example, patent application number 202323545568.5 discloses a "cooling mechanism for laser cutting machines," whose cooling components act directly on the outside of the laser head. However, when this type of general cooling solution is applied to specific tubular materials such as sofa metal frames for cutting, it has an inherent drawback: its cooling effect is usually applied to a large area or non-selectively on the metal frame being cut, making it impossible to accurately distinguish between the "high-temperature cutting zone undergoing laser cutting" and the "non-cutting zone that needs to be kept at a low temperature to suppress thermal deformation." This one-size-fits-all cooling method has two adverse effects: first, in the cutting zone, improper strong cooling may interfere with the high-temperature melting / vaporization state required for laser cutting, affecting the cut quality and even causing the cutting process to be interrupted; second, in the non-cutting zone, if the cooling is uneven or insufficient, it cannot effectively suppress the overall temperature rise and deformation caused by heat conduction. For example, the patent application number 202310915662.0 describes a CNC laser cutting machine, in which the "annular cooling pad" is also filled as a whole in the steel pipe, and it cannot clearly distinguish between the cutting area and the non-cutting area.

[0006] This technological contradiction lies in the inability to achieve precise, localized, and differentiated management of the workpiece's thermal field. This means ensuring sufficient heat input at the cutting point for material separation while simultaneously removing excess heat from surrounding non-cutting areas to minimize overall thermal deformation. This issue limits the ultimate machining accuracy of sofa metal frames, especially complex frames with extremely high requirements for straightness and flatness. Therefore, developing a dedicated CNC laser cutting machine capable of differentiated intelligent temperature control between the cutting and non-cutting areas is crucial for improving the manufacturing quality of sofa metal frames. Summary of the Invention

[0007] To prevent steel pipes from deforming due to high temperatures, existing CNC laser cutting machines are equipped with cooling structures when cutting sofa metal frames. However, these cooling structures act directly on the metal frame to be cut, and cannot clearly distinguish between the cutting zone and the non-cutting zone. Since the metal material at the cutting point needs to be cut instantly and locally superheated to melt or vaporize, this inability to distinguish between the cutting zone and the non-cutting zone will affect the CNC laser cutting process. To achieve the above objectives, the present invention provides the following technical solution: a CNC laser cutting machine for sofa metal frames, including a laser cutting head assembly installed inside the cutting machine cabinet. The laser cutting head assembly includes a laser cutting head and a cooling component. The cooling component is mounted on the laser cutting head and located on the side of the laser cutting head, dividing the cutting area and the cooling area. The laser cutting head is used for CNC laser cutting of the sofa metal frame. The cooling component includes: an adaptive adjustment frame mounted on the laser cutting head; and an adaptive cooling head mounted on the adaptive adjustment frame. The adaptive adjustment frame adaptively adjusts the position of the adaptive cooling head to adapt to different positions of the sofa metal frame. The adaptive cooling head includes: a cooling platform made of flexible thermally conductive material, used to introduce coolant to cool the non-cut area of ​​the sofa metal frame after cutting; and an adaptive drive frame, mounted on one side of the adaptive adjustment frame and on the other side of the cooling platform. The adaptive drive frame is used to drive the cooling platform to dynamically deform and adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting, according to the specific shape of the sofa metal frame.

[0008] Furthermore, the cutting cabinet includes: a feed inlet communicating with a processing chamber; the processing chamber being located inside the main body of the cutting cabinet; a conveyor belt assembled inside the processing chamber; the conveyor belt being used to feed the sofa metal frame into the processing chamber; and an operation panel mounted on the front end face of the main body of the cutting cabinet.

[0009] Furthermore, the adaptive adjustment frame includes: a drive motor A, mounted on the laser cutting head; a rotating shaft, mounted on the output shaft of the drive motor A via a coupling; an adjustment rail assembly, mounted at the end of the rotating shaft; and an adaptive cooling head mounted on the adjustment rail assembly, the adjustment rail assembly being used to adjust the position of the adaptive cooling head.

[0010] Furthermore, the adjusting rail assembly includes: a fixed cylinder, fixed at the end of the rotating shaft; an electric telescopic rod A, perpendicular to the rotating shaft; the electric telescopic rod A is inserted and fixed in the fixed cylinder; a top cover is installed on the top of the electric telescopic rod A; and a U-shaped plate is fixed at the end of the electric telescopic rod A.

[0011] Furthermore, the adjusting rail assembly also includes: a U-shaped crossbeam fixed to a U-shaped plate; the U-shaped crossbeam is perpendicular to the electric telescopic rod A; the U-shaped plate is located at the center of the U-shaped crossbeam; a threaded rod, laterally rotatable and mounted on the U-shaped crossbeam; the threaded rod and the U-shaped crossbeam are parallel to each other and have a pre-existing gap; a slider sleeved on the threaded rod and threadedly engaged with it; the slider can move along the threaded rod and is slidably mounted on the U-shaped crossbeam via a guide block; and a drive motor B fixed to the end of the U-shaped crossbeam; the output shaft of the drive motor B is fixed to the end of the threaded rod via a coupling.

[0012] Furthermore, a support column is fixed on the slider, and the end of the support column is fixed to the adaptive cooling head.

[0013] Furthermore, the adaptive drive frame includes: a support platform; a fixing plate, which is mounted on the top of the support platform; the fixing plate is used to fix the support platform to the adaptive adjustment frame; and multiple electric telescopic rods B, which are arranged in multiple rows and columns on the support platform; one end of each electric telescopic rod B is fixed to the support platform, and the other end is fixed to the cooling platform.

[0014] Furthermore, the cooling platform includes: a cooling platform body, fixed to the end of the electric telescopic rod B; the cooling platform body is made of a flexible thermally conductive material; a feeding chamber, opened at the top of the cooling platform body and distributed along the main body of the cooling platform body; a heat conduction chamber, opened at the bottom of the cooling platform body and distributed along the main body of the cooling platform body; the feeding chamber and the heat conduction chamber are connected at one end of the cooling platform body.

[0015] Furthermore, the cooling platform also includes a conduit, inside which a feed pipe and a discharge pipe are inserted. The feed pipe is connected to the feed chamber, and the discharge pipe is connected to the heat conduction chamber.

[0016] Furthermore, the CNC laser cutting machine for the sofa metal frame also includes an intelligent system. The intelligent system includes a monitoring module and a drive module, which are used to acquire and identify the three-dimensional morphological feature data of the non-cut area on the cut sofa metal frame in real time after laser cutting is completed. The drive module is signal-connected to the monitoring module and is used to generate and execute adaptive control commands based on the three-dimensional morphological feature data. The drive module drives the adaptive adjustment frame to adjust the position of the cooling platform according to the surface contour of the non-cut area of ​​the sofa metal frame detected by the monitoring module, and drives the adaptive drive frame to cause the cooling platform to dynamically deform to adapt to the cooling of the non-cut area of ​​the sofa metal frame.

[0017] Furthermore, the monitoring module includes: a three-dimensional vision sensor, positioned behind the laser cutting head, for acquiring real-time point cloud data including the freshly cut cross-section and the surface of the adjacent sofa metal frame; a data processing unit, for denoising the real-time point cloud data and segmenting and extracting feature information representing the surface contour and spatial pose of the non-cut area to generate three-dimensional morphological feature data; and a driving module including: a motion control unit, for receiving the three-dimensional morphological feature data and generating commands for controlling the adaptive adjustment frame and adaptive drive frame through inverse kinematics calculation; and a morphology control unit, for generating commands for controlling the adaptive adjustment frame and adaptive drive frame based on the surface curvature information in the three-dimensional morphological feature data.

[0018] Compared with the prior art, the CNC laser cutting machine for sofa metal frames of the present invention has the following features: 1) After the sofa metal frame enters the cutting cabinet, the laser cutting head assembly uses the laser cutting head to cut the sofa metal frame in front, and the cooling component follows behind the laser cutting head to cool the non-cut area of ​​the sofa metal frame after cutting, so as to prevent deformation of the uncooled cut area of ​​the sofa metal frame caused by subsequent clamping, transportation and other operations; it can distinguish between the cutting area and the non-cutting area to prevent the cooling from affecting the CNC laser cutting; during the cooling process of the non-cut area of ​​the sofa metal frame after cutting, the adaptive adjustment frame can adaptively adjust the position of the adaptive cooling head according to different parts of the sofa metal frame or different sizes of the sofa metal frame, so as to adapt the adaptive cooling head to the cooling of the non-cutting area of ​​the sofa metal frame after cutting; and when the adaptive cooling head specifically contacts the sofa metal frame, the adaptive drive frame uses the adaptive drive frame to drive the cooling table to dynamically deform and adapt according to the shape of the specific part of the sofa metal frame. 1) Cooling of the non-cut area of ​​the sofa metal frame after cutting; 2) Existing technologies usually cool the entire area to avoid deformation. However, these solutions do not distinguish between the "during cutting" and "after cutting" states, nor do they identify the spatial differences between the cutting and non-cut areas. This inevitably leads to problems such as interference with cutting or uneven cooling. This invention treats the non-cut area after cutting as a clear and independent cooling target. Through the monitoring module, it performs three-dimensional morphological recognition, enabling the control target of the entire system to be precisely focused from the entire workpiece to a "specific, completed local area," thus fundamentally avoiding interference of cooling behavior with the laser cutting process ahead; 3) This invention constructs a complete intelligent control loop. The three-dimensional morphological feature data of the monitoring module is the sole basis for the decision-making of the driving module, realizing a leap from preset program actions to "autonomous decision-making and action generation based on real-time morphological perception." The driving module not only performs position servo control but also calculates surface curvature and drives end deformation, achieving deep binding and feedback between perceived information and executed actions in three-dimensional space. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of the CNC laser cutting machine table for the sofa metal frame of the present invention; Figure 2 is a schematic diagram of the structure of the laser cutting head assembly in the present invention; Figure 3 is a schematic diagram of the structure of the laser cutting head in Figure 2; Figure 4 is a schematic diagram of the structure of the cooling component in Figure 2; Figure 5 is a schematic diagram of the structure of the adaptive adjustment frame in Figure 4; Figure 6 is a schematic diagram of the structure of the adjustment rail group in Figure 5; Figure 7 is a schematic diagram of the structure of the adaptive cooling head in Figure 4; Figure 8 is a schematic diagram of the structure of the adaptive drive frame in Figure 7; Figure 9 is a schematic diagram of the structure of the cooling platform in Figure 7; Figure 10 is a cross-sectional view of the cooling platform in Figure 9.

[0020] In the diagram: 1-Cutting cabinet, 2-Feed inlet, 3-Conveyor belt, 4-Operation panel, 5-Laser cutting head assembly, 6-Laser cutting head, 7-Cooling component; 61-Mounting plate, 62-Laser cutting head body; 71-Adaptive adjustment frame, 72-Adaptive cooling head; 711-Drive motor A, 712-Rotating shaft, 713-Adjusting rail assembly, 7131-Top cover, 7132-Fixing cylinder, 7133-U-shaped crossbeam 7134-Drive motor B, 7135-Threaded rod, 7136-Slider, 7137-Support column, 7138-U-shaped plate, 7139-Electric telescopic rod A; 721-Adaptive drive frame, 722-Cooling platform, 7211-Fixed plate, 7212-Support platform, 7213-Electric telescopic rod B, 7221-Conduit, 7222-Cooling platform body, 7223-Feeding chamber, 7224-Heat conduction chamber. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0022] In this embodiment of the invention, please refer to Figures 1, 2, and 6: a CNC laser cutting machine for a sofa metal frame includes a laser cutting head assembly 5 installed inside a cutting cabinet 1. The laser cutting head assembly 5 includes a laser cutting head 6 and a cooling component 7. The cooling component 7 is mounted on the laser cutting head 6 and is located on the side of the laser cutting head 6, dividing the cutting area and the cooling area. The laser cutting head 6 is used for CNC laser cutting of the sofa metal frame. Therefore, after the sofa metal frame enters the cutting cabinet 1, the laser cutting head assembly 5 uses the laser cutting head 6 to cut the sofa metal frame from the front, and the cooling component 7 follows the laser cutting head. Behind the cutting head 6, the non-cut area of ​​the sofa metal frame is cooled to prevent deformation of the uncooled cut area during subsequent clamping, transportation, and other operations. It should be noted that all components of the CNC laser cutting machine, except for the laser cutting head assembly 5, are existing technologies. Their detailed structures can be found in existing literature and journals, and they can also be purchased directly from the market or assembled from commercially available parts. They are not the subject of this invention and are not described in detail here, nor are they shown in the accompanying drawings. The laser cutting head 6 includes a laser cutting head body 62, which is mounted on a mounting plate. On mounting plate 61, multiple threaded mounting holes are provided; please refer to Figures 2 and 4: the cooling component 7 includes: an adaptive adjustment frame 71, mounted on the laser cutting head 6; and an adaptive cooling head 72, mounted on the adaptive adjustment frame 71. The adaptive adjustment frame 71 adaptively adjusts the position of the adaptive cooling head 72 to adapt to different positions of the sofa metal frame. During the cooling process of the non-cut area of ​​the sofa metal frame after cutting, the cooling component 7 follows behind the laser cutting head 6. The adaptive adjustment frame 71 can automatically adjust the position according to different parts of the sofa metal frame or different sizes of the sofa metal frame. The adaptive cooling head 72 is adjusted to adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting. Please refer to Figure 7: The adaptive cooling head 72 includes: a cooling platform 722 made of flexible thermally conductive material, used to introduce coolant to cool the non-cut area of ​​the sofa metal frame after cutting; an adaptive drive frame 721, one side of which is mounted on the adaptive adjustment frame 71, and the other side of which is mounted on the cooling platform 722; the adaptive drive frame 721 is used to drive the cooling platform 722 to dynamically deform and adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting, according to the shape of the specific part of the sofa metal frame.

[0023] In summary, after the sofa metal frame enters the cutting cabinet 1, the laser cutting head assembly 5 uses the laser cutting head 6 to cut the sofa metal frame from the front. The cooling component 7 follows behind the laser cutting head 6 to cool the non-cut area of ​​the sofa metal frame after cutting, so as to prevent deformation of the uncooled cut area of ​​the sofa metal frame caused by subsequent clamping, transportation and other operations. It can distinguish between the cut area and the non-cut area to prevent the cooling from affecting the CNC laser cutting. During the cooling process of the non-cut area of ​​the sofa metal frame after cutting, the adaptive adjustment frame 71 can adaptively adjust the position of the adaptive cooling head 72 according to different parts of the sofa metal frame or different sizes of the sofa metal frame, so that the adaptive cooling head 72 can adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting. And when the adaptive cooling head 72 specifically contacts the sofa metal frame, the adaptive drive frame 721 uses the shape of the specific part of the sofa metal frame to drive the cooling table 722 to dynamically deform and adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting.

[0024] In this embodiment of the invention, please refer to Figure 1: the cutting cabinet 1 includes: a feed inlet 2, which communicates with the processing chamber; the processing chamber is located inside the main body of the cutting cabinet 1; a conveyor belt 3, which is assembled inside the processing chamber; the conveyor belt 3 is used to feed the sofa metal frame into the processing chamber; and an operation panel 4, which is installed on the front end face of the main body of the cutting cabinet 1.

[0025] In this embodiment of the invention, please refer to Figures 4 and 5: the adaptive adjustment frame 71 includes: a drive motor A711, mounted on the laser cutting head 6; a rotating shaft 712, mounted on the output shaft of the drive motor A711 via a coupling; an adjustment rail group 713, mounted at the end of the rotating shaft 712; and an adaptive cooling head 72 mounted on the adjustment rail group 713, the adjustment rail group 713 being used to adjust the position of the adaptive cooling head 72.

[0026] Further, please refer to Figure 6: The adjusting rail assembly 713 includes: a fixed cylinder 7132, fixed at the end of the rotating shaft 712; an electric telescopic rod A7139, which is perpendicular to the rotating shaft 712; the electric telescopic rod A7139 is inserted and fixed in the fixed cylinder 7132; a top cover 7131 is installed on the top of the electric telescopic rod A7139; and a U-shaped plate 7138 is fixed at the end of the electric telescopic rod A7139.

[0027] Please refer to Figure 6: The adjusting rail assembly 713 further includes: a U-shaped crossbeam 7133, fixed on a U-shaped plate 7138; the U-shaped crossbeam 7133 is perpendicular to the electric telescopic rod A7139; the U-shaped plate 7138 is located at the center of the U-shaped crossbeam 7133; a threaded rod 7135, laterally rotatable and fitted onto the U-shaped crossbeam 7133; the threaded rod 7135 and the U-shaped crossbeam 7133 are parallel to each other and have a pre-reserved gap between them; a slider 7136, sleeved on the threaded rod 7135 and threadedly engaged with the threaded rod 7135; the slider 7136 can move along the threaded rod 7135, and the slider 7136 is slidably mounted on the U-shaped crossbeam 7133 via a guide block; a drive motor B7134, fixed to the end of the U-shaped crossbeam 7133; the output shaft of the drive motor B7134 is fixed to the end of the threaded rod 7135 via a coupling.

[0028] Please refer to Figure 6: A support column 7137 is fixed on the slider 7136, and the end of the support column 7137 is fixed on the adaptive cooling head 72.

[0029] In summary, during the cooling process of the non-cut area of ​​the sofa metal frame after cutting, the cooling component 7 follows behind the laser cutting head 6. The adaptive adjustment frame 71 activates the drive motor A711, which in turn drives the adjustment rail assembly 713 and the adaptive cooling head 72 to rotate. Simultaneously, the adjustment rail assembly 713 activates the electric telescopic rod A7139 to extend and retract, causing the adaptive cooling head 72 to rise and fall. The adjustment rail assembly 713 also activates the drive motor B7134, which drives the threaded rod 7135 to engage with the slider 7136 via threaded transmission. This allows the adaptive cooling head 72 to move and adjust its position along the threaded rod 7135. Thus, the adaptive adjustment frame 71 can adaptively adjust the position of the adaptive cooling head 72 according to different parts or sizes of the sofa metal frame, enabling the adaptive cooling head 72 to adapt to the cooling of the non-cut area of ​​the sofa metal frame after cutting.

[0030] In this embodiment of the invention, please refer to Figures 7 and 8: the adaptive drive frame 721 includes: a support platform 7212; a fixing plate 7211, which is mounted on the top of the support platform 7212; the fixing plate 7211 is used to fix the support platform 7212 on the adaptive adjustment frame 71 (specifically, the fixing plate 7211 is used to fix the support platform 7212 on the support column 7137); a plurality of electric telescopic rods B7213, which are arranged in multiple rows and columns on the support platform 7212; one end of the electric telescopic rod B7213 is fixed on the support platform 7212, and the other end is fixed on the cooling platform 722.

[0031] Further, please refer to Figures 7, 9, and 10: The cooling platform 722 includes: a cooling platform body 7222, fixed to the end of the electric telescopic rod B7213; the cooling platform body 7222 is made of a flexible thermally conductive material; a feeding chamber 7223, opened at the top of the cooling platform body 7222 and distributed along the main body of the cooling platform body 7222; a heat conduction chamber 7224, opened at the bottom of the cooling platform body 7222 and distributed along the main body of the cooling platform body 7222; the feeding chamber 7223 and the heat conduction chamber 7224 are connected at one end of the cooling platform body 7222.

[0032] It should be noted that the flexible thermally conductive material of the cooling platform 7222 is existing technology, and its detailed structure can be found in existing literature and journals, and it can also be purchased directly from the market; it is not what this invention is meant to protect, and will not be described in detail here.

[0033] Please refer to Figure 10: The cooling platform 722 also includes a conduit 7221, in which a feed pipe and a discharge pipe are inserted. The feed pipe is connected to the feed chamber 7223, and the discharge pipe is connected to the heat conduction chamber 7224.

[0034] In summary, when the adaptive cooling head 72 comes into contact with the sofa metal frame, the adaptive drive frame 721 extends and retracts through one or more electric telescopic rods B7213 to adjust the shape of the cooling platform 7222. The adaptive drive frame 721 drives the cooling platform 722 to dynamically deform and adapt to the shape of the non-cut area of ​​the sofa metal frame according to the specific shape of the sofa metal frame. Then, coolant is introduced into the feed chamber 7223 through the feed pipe. After the coolant flows into the heat conduction chamber 7224, it cools the non-cut area of ​​the sofa metal frame.

[0035] In this embodiment of the invention, the CNC laser cutting machine for the sofa metal frame further includes an intelligent system. The intelligent system includes a monitoring module and a driving module, which are used to acquire and identify the three-dimensional morphological feature data of the non-cut area on the cut sofa metal frame in real time after laser cutting is completed. The driving module is signal-connected to the monitoring module and is used to generate and execute adaptive control commands based on the three-dimensional morphological feature data. The driving module drives the adaptive adjustment frame 71 to adjust the position of the cooling platform 722 according to the surface contour of the non-cut area sofa metal frame detected by the monitoring module, and drives the adaptive driving frame 721 to cause the cooling platform 722 to dynamically deform to adapt to the cooling of the non-cut area sofa metal frame.

[0036] Furthermore, the monitoring module includes: a three-dimensional vision sensor, positioned behind the laser cutting head 6, for acquiring real-time point cloud data including the freshly cut cross-section and the surface of the adjacent sofa metal frame; a data processing unit, for performing noise reduction processing on the real-time point cloud data, and segmenting and extracting feature information representing the surface contour and spatial pose of the non-cut area to generate three-dimensional morphological feature data; and a driving module including: a motion control unit, for receiving the three-dimensional morphological feature data and generating control instructions for the adaptive adjustment frame 71 and the adaptive drive frame 721 through inverse kinematics calculation; and a morphology control unit, for generating control instructions for the adaptive adjustment frame 71 and the adaptive drive frame 721 based on the surface curvature information in the three-dimensional morphological feature data.

[0037] Existing technologies typically cool the entire workpiece to avoid deformation, but these solutions do not distinguish between the "during" and "after" cutting states, nor do they identify the spatial differences between the cutting and non-cutting areas. This inevitably leads to problems such as interference with the cutting process or uneven cooling. This invention treats the non-cutting area after cutting as a clear and independent cooling target, and uses a monitoring module to identify its three-dimensional shape. This allows the control target of the entire system to be precisely focused from the entire workpiece to a "specific, completed local area," thus fundamentally avoiding interference from the cooling process with the laser cutting process ahead.

[0038] This invention constructs a complete intelligent control loop; the three-dimensional morphological feature data of the monitoring module is the sole basis for the decision-making of the driving module, realizing the leap from preset program actions to "autonomous decision-making and action generation based on real-time morphological perception"; the driving module not only performs position servo control, but also solves the surface curvature and drives the end deformation, realizing the deep binding and feedback of perceived information and executed actions in three-dimensional space.

[0039] The working principle of this invention is as follows: After the sofa metal frame enters the cutting cabinet 1, the laser cutting head assembly 5 uses the laser cutting head 6 to cut the sofa metal frame from the front. The cooling component 7 follows behind the laser cutting head 6 to cool the non-cut area of ​​the sofa metal frame after cutting, so as to prevent deformation of the sofa metal frame at the uncooled cut area caused by subsequent clamping, transportation and other operations; it can distinguish between the cutting area and the non-cutting area to prevent the cooling from affecting the CNC laser cutting; during the cooling process of the non-cutting area of ​​the sofa metal frame after cutting, the adaptive adjustment frame 71 starts the drive motor A711, which drives the adjustment rail group 713 and the adaptive cooling head 72 to rotate; and the adjustment rail group 713 starts the electric telescopic rod A7139 to extend and retract, which drives the adaptive cooling head 72 to rise and fall. The adjustment rail group 713 starts the drive motor B7134, which drives the threaded rod 7135 and the slider. The 7136 threaded drive mechanism allows the adaptive cooling head 72 to move and adjust its position along the threaded rod 7135. This enables the adaptive adjustment frame 71 to adaptively adjust the position of the adaptive cooling head 72 according to different parts or sizes of the sofa metal frame, thus adapting the adaptive cooling head 72 to the cooling of the non-cut area after the sofa metal frame has been cut. Furthermore, when the adaptive cooling head 72 specifically contacts the sofa metal frame, the adaptive drive frame 721 extends and retracts via one or more electric telescopic rods B7213, adjusting the shape of the cooling platform 7222. This allows the adaptive drive frame 721 to drive the cooling platform 722 to dynamically deform and adapt to the shape of the non-cut area of ​​the sofa metal frame after cutting, based on the specific shape of the sofa metal frame. Coolant is then introduced into the feeding chamber 7223 through the feeding pipe, and the coolant flows into the heat conduction chamber 7224 to cool the non-cut area of ​​the sofa metal frame.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The preferred embodiments of the present invention have been described in detail above. However, the present invention 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 invention.

Claims

1. A CNC laser cutting machine for sofa metal frames, including a laser cutting head assembly installed inside the cutting machine cabinet, characterized in that, The laser cutting head assembly includes a laser cutting head and a cooling component. The cooling component is mounted on the laser cutting head and located on the side of the laser cutting head, dividing the cutting area and the cooling area. The laser cutting head is used for CNC laser cutting of the sofa metal frame. The cooling component includes: an adaptive adjustment frame mounted on the laser cutting head; and an adaptive cooling head mounted on the adaptive adjustment frame. The adaptive adjustment frame adaptively adjusts the position of the adaptive cooling head to adapt to different positions of the sofa metal frame. The adaptive cooling head includes: a cooling platform made of flexible thermally conductive material, used to introduce coolant to cool the non-cut area of ​​the sofa metal frame after cutting; and an adaptive drive frame, mounted on one side of the adaptive adjustment frame and on the other side of the cooling platform. The adaptive drive frame is used to drive the cooling platform to dynamically deform and adapt to the cooling of the non-cut area of ​​the sofa metal frame according to the shape of the specific part of the sofa metal frame.

2. The CNC laser cutting machine table for sofa metal frames according to claim 1, characterized in that, The adaptive adjustment frame includes: a drive motor A, mounted on the laser cutting head; a rotating shaft, mounted on the output shaft of the drive motor A via a coupling; an adjustment rail assembly, mounted at the end of the rotating shaft; and an adaptive cooling head mounted on the adjustment rail assembly, which is used to adjust the position of the adaptive cooling head.

3. The CNC laser cutting machine table for sofa metal frames according to claim 2, characterized in that, The adjusting rail assembly includes: a fixed cylinder, fixed at the end of the rotating shaft; an electric telescopic rod A, perpendicular to the rotating shaft; the electric telescopic rod A is inserted and fixed in the fixed cylinder; a top cover is installed on the top of the electric telescopic rod A; and a U-shaped plate is fixed at the end of the electric telescopic rod A.

4. The CNC laser cutting machine table for sofa metal frames according to claim 3, characterized in that, The adjusting rail assembly further includes: a U-shaped crossbeam fixed to a U-shaped plate; the U-shaped crossbeam is perpendicular to the electric telescopic rod A; the U-shaped plate is located at the center of the U-shaped crossbeam; a threaded rod, laterally rotatable and mounted on the U-shaped crossbeam; the threaded rod and the U-shaped crossbeam are parallel to each other and have a pre-existing gap; a slider sleeved on the threaded rod and threadedly engaged with it; the slider can move along the threaded rod and is slidably mounted on the U-shaped crossbeam via a guide block; and a drive motor B fixed to the end of the U-shaped crossbeam; the output shaft of the drive motor B is fixed to the end of the threaded rod via a coupling.

5. The CNC laser cutting machine table for sofa metal frames according to claim 4, characterized in that, A support column is fixed on the slider, and the end of the support column is fixed to the adaptive cooling head.

6. The CNC laser cutting machine table for sofa metal frames according to claim 1, characterized in that, The adaptive drive frame includes: a support platform; a fixing plate, which is installed on the top of the support platform; the fixing plate is used to fix the support platform on the adaptive adjustment frame; and multiple electric telescopic rods B, which are arranged in multiple rows and columns on the support platform; one end of each electric telescopic rod B is fixed on the support platform and the other end is fixed on the cooling platform.

7. The CNC laser cutting machine table for sofa metal frames according to claim 6, characterized in that, The cooling platform includes: a cooling platform body, fixed at the end of the electric telescopic rod B; the cooling platform body is made of a flexible thermally conductive material; a feeding chamber, located at the top of the cooling platform body and distributed along the main body of the cooling platform body; and a heat conduction chamber, located at the bottom of the cooling platform body and distributed along the main body of the cooling platform body; the feeding chamber and the heat conduction chamber are connected at one end of the cooling platform body.

8. The CNC laser cutting machine table for sofa metal frames according to claim 7, characterized in that, The cooling platform also includes a conduit, inside which a feed pipe and a discharge pipe are inserted. The feed pipe is connected to the feed chamber, and the discharge pipe is connected to the heat conduction chamber.

9. The CNC laser cutting machine table for sofa metal frames according to claim 1, characterized in that, It also includes an intelligent system, which comprises a monitoring module and a drive module. After laser cutting, the intelligent system acquires and identifies in real time the three-dimensional morphological feature data of the non-cut area on the cut sofa metal frame. The drive module is signal-connected to the monitoring module and generates and executes adaptive control commands based on the three-dimensional morphological feature data. The drive module drives the adaptive adjustment frame to adjust the position of the cooling platform based on the surface contour of the non-cut area sofa metal frame detected by the monitoring module, and drives the adaptive drive frame to cause the cooling platform to dynamically deform to adapt to the cooling of the non-cut area sofa metal frame.

10. The CNC laser cutting machine table for sofa metal frames according to claim 9, characterized in that, The monitoring module includes: a three-dimensional vision sensor, positioned behind the laser cutting head, for acquiring real-time point cloud data including the fresh cut surface and the surface of the adjacent sofa metal frame; a data processing unit, for denoising the real-time point cloud data and segmenting and extracting feature information representing the surface contour and spatial pose of the non-cut area to generate three-dimensional morphological feature data; and a driving module including: a motion control unit, for receiving the three-dimensional morphological feature data and generating commands for controlling the adaptive adjustment frame and adaptive drive frame through inverse kinematics calculation; and a morphological control unit, for generating commands for controlling the adaptive adjustment frame and adaptive drive frame based on the surface curvature information in the three-dimensional morphological feature data.

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