Wood-plastic floor processing equipment
By combining multimodal visual inspection and the coordinated control of a five-axis linkage cutter head unit, the cutting problem of distinguishing between shallow defects and warping deformation and small-radius arc cutting in wood-plastic flooring cutting devices has been solved, achieving efficient utilization and high-precision cutting.
Patent Information
- Application Number
- CN202611065922.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-17
- Publication Date
- 2026-08-25
AI Technical Summary
Existing wood-plastic flooring cutting devices struggle to effectively distinguish between shallow micro-cracks and warping deformation, resulting in low board utilization. Furthermore, when cutting around small radius arcs, the fixed saw blade orientation causes molten bands and burrs at the cutting edge, affecting cutting accuracy.
A multimodal vision inspection system is adopted, combined with a five-axis linkage cutter head unit and a follow-up vision feedback system. Shallow defects are identified through binocular stereo vision and structured light projection. The five degrees of freedom of the five-axis linkage cutter head unit coordinate to control the saw blade edge to be consistent with the cutting path, and the adaptive support unit suppresses the vibration of the board.
It improves the utilization rate of sheet metal, eliminates the extrusion and melting phenomenon during small-radius arc cutting, enhances the quality of the cut surface and the accuracy of closed-loop correction, and ensures the smoothness of the cut surface.
Smart Images
Figure CN122626316A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of wood-plastic flooring technology, and specifically relates to a wood-plastic flooring processing equipment. Background Technology
[0002] As a new type of environmentally friendly composite material, wood-plastic composite flooring often exhibits various appearance defects on its surface during the extrusion molding process due to factors such as material properties, cooling rate, and fluctuations in the extrusion process. Among these defects, shallow microcracks and air bubbles, while not affecting structural strength, severely impact appearance ratings and must be removed from the production line. Warping and undulations, being geometric deformations, can be repaired through subsequent leveling processes and should not be discarded as waste. Currently, defect detection and removal on the production line primarily rely on a combination of machine vision and CNC cutting equipment to achieve automated production and quality control.
[0003] Existing wood-plastic composite flooring cutting devices have several defects during use. Relying solely on grayscale thresholds or conventional binocular vision makes it difficult to effectively distinguish between shallow microcracks and warping undulations with similar shapes. This can easily lead to the miscutting and waste of good products or the omission of defective products. Furthermore, when cutting complex contours, the fixed orientation of the saw blade and the continuous compression and friction on the inner side of the arc can cause annular melting bands and serrated ripples in the wood-plastic material, severely affecting the quality of the cross-section. When using a fixed camera for correction, tangential parallax occurs due to changes in the curvature of the arc, resulting in a decrease in closed-loop correction accuracy and making it difficult to guarantee the cutting accuracy of complex contours. Summary of the Invention
[0004] This invention provides a wood-plastic composite flooring processing device that solves the technical problems of existing wood-plastic composite flooring cutting devices being unable to effectively distinguish between shallow defects and warping deformation, resulting in low board utilization, and the formation of molten bands and burrs on the cutting edge due to the fixed orientation of the saw blade when making small-radius arc cuts.
[0005] This invention provides a wood-plastic flooring processing device, comprising: The frame is equipped with a feed roller conveyor for conveying wood-plastic flooring; Gantry frame, the gantry frame spans across the feed roller conveyor; The cutting actuator is movably mounted on the gantry and includes a five-axis linkage cutter head unit. A multimodal vision inspection system, mounted on a gantry, is used to scan the surface of wood-plastic composite flooring before cutting to identify and distinguish between shallow defects and geometric deformations. The follow-up vision feedback system is integrated into the cutting actuator and is used to acquire cutting path images in real time during the cutting process. The control unit is electrically connected to the five-axis linkage cutter head unit, the multimodal vision inspection system, and the follow-up vision feedback system. It is used to plan the cutting path according to the detection information and synchronously control the yaw angle of the five-axis linkage cutter head unit so that its cutting edge is always consistent with the tangential direction of the cutting path.
[0006] In a preferred embodiment, the multimodal vision detection system includes: A binocular stereo vision module, mounted on a gantry frame, is used to acquire three-dimensional topographic information of the wood-plastic floor surface; The structured light projection module, mounted on a gantry, is used to project specific patterns onto the surface of wood-plastic composite flooring to enhance the ability to identify shallow micro-cracks.
[0007] In a preferred embodiment, the five-axis linkage tool head unit includes: Y-axis carriage installed on the gantry; A transverse support that can move along the Y-axis carriage; A slewing bearing located below the transverse support; A cutter head holder fixed to the output end of a slewing bearing; The spindle and circular saw blade are mounted on the cutter head holder; Among them, the slewing bearing drives the tool head holder to oscillate around the Z-axis.
[0008] In a preferred embodiment, the five-axis linkage tool head unit further includes a floating lifting mechanism, which includes a lifting plate and an elastic element; The lifting plate is slidably mounted on the horizontal support and connected to the inner ring of the slewing bearing; The elastic element is located between the horizontal support and the lifting plate to provide downward elastic pressure to the cutter head to adapt to the surface of the plate. The inner wall of the Y-axis carriage is provided with a slide rail that matches the transverse support.
[0009] In a preferred embodiment, the follow-up vision unit includes: An arc-shaped cantilever fixed to the cutter head holder of the cutting actuator; A follow-up camera is installed at the end of the curved cantilever, and the field of view of the follow-up camera covers the cutting area of the circular saw blade; A hollow conductive slip ring is located at the top of the cutter head holder. The signal cable of the follow camera passes through the central hole of the hollow conductive slip ring and is connected to the external control unit.
[0010] In a preferred embodiment, the follow-up vision unit further includes a ring light source disposed around the follow-up camera for synchronously supplementing light to the cutting area during the cutting process.
[0011] In a preferred embodiment, the five-axis linkage tool head unit further includes three independent servo drive motors, which are as follows: The first servo motor is used to drive the Y-axis carriage to move along the gantry. The second servo motor is used to drive the slewing bearing to tilt. The third servo motor is used to drive the spindle and the circular saw blade to rotate.
[0012] In a preferred embodiment, an adaptive support unit is further included, which is connected below the cutter head holder of the cutting actuator and located on both sides of the circular saw blade; The adaptive support unit includes support rollers that hold the wood-plastic composite flooring from below during cutting, providing reverse support to prevent the board from vibrating or warping.
[0013] In a preferred embodiment, the surface of the support roller is provided with a conveying thread along its axial direction, and the helical direction of the conveying thread is configured such that when the wood-plastic flooring is conveyed on the feed roller and passes through the support roller, the roller surface applies a frictional force to the bottom surface of the board pointing towards the center line of the board.
[0014] In a preferred embodiment, the adaptive support unit further includes a height adjustment mechanism that connects the support roller and the cutter head seat, for adjusting the initial height of the support roller according to the thickness of the wood-plastic flooring.
[0015] In a preferred embodiment, ...
[0016] The beneficial effects of this invention are as follows: This invention uses a multimodal vision fusion algorithm to accurately separate shallow defects and warping deformation, thereby improving the utilization rate of the board material. At the same time, through the coordinated control of the five-axis linkage cutter head unit and the follow-up vision unit, the saw blade edge is always aligned with the feed tangential direction, eliminating the extrusion and melting phenomenon during small radius arc cutting, and improving the quality of the cutting section and the accuracy of closed-loop correction. The present invention uses an adaptive support unit with support rollers located on the left and right sides of the circular saw blade, and slightly lower than the lowest point of the saw blade. When the saw blade presses down to cut, the support rollers first or simultaneously contact the surface of the board. The rigid support provided by the support rollers effectively suppresses the up-and-down vibration of the board and ensures the smoothness of the cut surface. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 This is the present invention. Figure 1 Enlarged structural diagram at point A in the middle.
[0019] Figure 3This is a schematic diagram of the gantry X-rail connection structure of the present invention.
[0020] Figure 4 This is a schematic diagram of the structure of the five-axis linkage tool head unit and the follow-up vision unit of the present invention.
[0021] Figure 5 This is a schematic diagram of the five-axis linkage tool head unit structure of the present invention.
[0022] Figure 6 This is a schematic diagram of the adaptive support unit structure of the present invention.
[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the present invention (right view).
[0024] Figure 8 This is the invention Figure 7 Enlarged structural diagram at point B.
[0025] Figure 9 This is a front view sectional structural schematic diagram of the present invention.
[0026] Figure 10 This is the invention Figure 9 Enlarged structural diagram at point C.
[0027] In the diagram: 1. Feed roller conveyor; 2. Gantry frame; 3. Binocular stereo vision module; 4. Structured light projection module; 5. Y-axis carriage; 51. Carriage; 52. 1. First servo motor; 6. Five-axis linkage cutter head unit; 61. Transverse support; 62. Elastic element; 63. Lifting plate; 64. Slewing bearing; 641. Outer ring; 642. Inner ring; 643. 641. Second servo motor; 65. Circular saw blade; 65. Lifting rail; 66. Cutter head holder; 67. Rotation. Servo motor (third servo motor); 68. Spindle; 69. Circular saw blade; 7. Slide rail; 8. Control unit; 9. Follow-up vision unit; 91. Arc cantilever; 92. Hollow conductive slip ring; 93. Follow-up industrial camera; 94. Ring light source; 10. Adaptive support unit; 101. Support roller; 102. Height adjustment mechanism; 101. Base; 102. Bracket; 103. Adjustable curved arm; 104. Height adjustment mechanism; 105. Support roller. Detailed Implementation
[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0029] For reference Figure 1 , Figure 2 and Figure 9 As shown, a wood-plastic composite flooring processing equipment includes: The frame is equipped with a feed roller conveyor 1 for conveying wood-plastic flooring; Gantry 2, Gantry 2 spans across the feed roller conveyor 1; The cutting actuator is movably mounted on the gantry 2 and includes a five-axis linkage cutter head unit 6. A multimodal vision inspection system is installed on the gantry 2 to scan the surface of the wood-plastic flooring before cutting in order to identify and distinguish between shallow defects and geometric deformations. The follow-up vision feedback system is integrated into the cutting actuator and is used to acquire cutting path images in real time during the cutting process. The control unit 8 is electrically connected to the five-axis linkage cutter head unit 6, the multimodal vision inspection system, and the follow-up vision feedback system. It is used to plan the cutting path according to the detection information and synchronously control the yaw angle of the five-axis linkage cutter head unit 6 so that its cutting edge is always consistent with the tangential direction of the cutting path.
[0030] refer to Figure 1 As shown, the multimodal vision inspection system includes: The binocular stereo vision module 3, which is mounted on the gantry 2, is used to acquire the three-dimensional morphological information of the wood-plastic floor surface; The structured light projection module 4, which is mounted on the gantry 2, is used to project specific patterns onto the surface of the wood-plastic flooring to enhance the ability to identify shallow micro-cracks. It should be noted that the multimodal vision inspection system adopts a fusion strategy of "structured light + binocular vision". Specifically, the structured light projection module 4 projects a coded stripe pattern onto the surface of the board. Since shallow microcracks are difficult to image under ordinary light, but under structured light, the stripes at the crack will undergo a phase change or break. The binocular stereo vision module 3 captures this phase difference and combines it with three-dimensional morphology information to accurately distinguish between "real cracks" (which need to be cut) and "false cracks" (such as wood grain color difference or surface dust).
[0031] refer to Figure 1 , Figure 5 , Figure 8 and Figure 10 As shown, the five-axis linkage tool head unit 6 includes: Y-axis carriage 5 installed on gantry 2; A transverse support 61 that can move along the Y-direction carriage 5; Slewing bearing 64 is located below the transverse support 61; Tool holder 66 is fixed to the output end of slewing bearing 64; The main shaft 68 and the circular saw blade 65 are mounted on the cutter head holder 66; Among them, the slewing bearing 64 drives the tool head holder 66 to oscillate around the Z-axis; It should be noted that the transverse support 61 is slidably connected to the inner wall of the Y-axis carriage 5. A slewing bearing 64 is connected to the inner wall of the transverse support 61, a cutter head holder 66 is connected to the outer wall of the slewing bearing 64, and a spindle 68 is connected to the inner wall of the cutter head holder 66. A circular saw blade 65 is fixedly connected to the lower end of the spindle 68. The control unit 8 has a preset tangential following algorithm. When the planned cutting path is a curve, the control unit 8 calculates the tangent vector at the current point on the path in real time and converts it into a rotation angle command for the slewing bearing 64. This ensures that the sawing plane of the circular saw blade 65 is always tangent to the movement trajectory during the cutting process. This method avoids the problem of pressure friction between the saw blade side and the material during small-radius cutting, thereby preventing the formation of a molten zone.
[0032] refer to Figure 8 and Figure 10 As shown, the five-axis linkage tool head unit 6 also includes a floating lifting mechanism, which includes a lifting plate 63 and an elastic element 62. The lifting plate 63 is slidably mounted on the transverse support 61 and connected to the inner ring of the slewing bearing 64; The elastic element 62 is disposed between the transverse support 61 and the lifting plate 63 to provide downward elastic pressure to the cutter head to adapt to the surface of the plate. The inner wall of the Y-axis carriage 5 is provided with a slide rail 7 that matches the transverse support 61; It should be noted that the lifting plate 63 is slidably connected to the inner wall of the Y-axis slide 5. The lifting plate 63 slides up and down on the inner wall of the Y-axis slide 5. The elastic element 62 is fixedly connected between the transverse support 61 and the lifting plate 63. The transverse support 61 is equipped with a precision linear guide rail. The Y-axis slide 5 cooperates with it through a slider. The lifting plate 63 is sleeved on the guide column of the transverse support 61 through a linear bearing. The elastic element 62 is selected as a compression spring or a disc spring assembly. When the circular saw blade 65 contacts the surface of the board and performs the cutting action, if there is local warping on the surface of the board (height error ±2mm), the floating lifting mechanism allows the cutter head seat 66 to produce a small passive displacement relative to the transverse support 61. The soft connection absorbs the rigid impact of the Z-axis, ensuring the constant cutting depth of the saw blade and preventing saw blade tooth breakage or motor overload due to hard impact.
[0033] refer to Figure 2 and Figure 4 As shown, the follow-up vision unit includes: Arc-shaped cantilever 91 fixed to the cutter head holder 66 of the cutting actuator; The follow-up camera 93 is located at the end of the curved cantilever 91, and its field of view covers the cutting area of the circular saw blade 65. Hollow conductive slip ring 92 is set at the top of the cutter head seat 66. The signal cable of the follow-up camera 93 passes through the central hole of the hollow conductive slip ring 92 and is connected to the external control unit 8. It should be noted that the arc-shaped cantilever 91 is fixed to the top surface connected to the cutter head holder 66, and the follow-up camera 93 is installed on the side of the arc-shaped cantilever 91 away from the cutter head holder 66. In this embodiment, the follow-up visual feedback system includes: a hollow conductive slip ring 92 is fixedly installed on the non-rotating side of the top of the cutter head holder 66, its rotor end is connected to the signal cable of the follow-up camera 93, and its stator end is connected to the control unit 8. The signal cable (including the power cable and the data transmission cable) of the follow-up camera 93 is led out from the back of the camera, passes upward through the central through hole of the hollow conductive slip ring 92, and then connects to the rotor end of the slip ring. When the cutter head holder 66 drives the circular saw blade 65 and the follow-up camera 93 to rotate and sway by ±180° or even continuously, the cable rotates synchronously with the rotor end of the slip ring without tangling or breaking. This cable threading structure ensures the stability of visual signal transmission under any sway angle, realizing all-round monitoring without blind spots.
[0034] refer to Figure 2 and Figure 4 As shown, the follow-up vision unit also includes a ring light source 94, which is disposed around the follow-up camera 93 and is used to provide synchronous supplementary lighting to the cutting area during the cutting process; It should be noted that, in order to eliminate the shadow interference caused by the saw blade teeth and ensure that the acquired cutting seam image has high contrast, so as to facilitate the subsequent algorithm to identify cutting deviations, in this embodiment, the ring light source 94 is fixed to the periphery of the lens of the follow-up camera 93 by a bracket to form coaxial illumination or low-angle ring illumination. During the cutting process, dynamic shadows will be generated due to the high-speed rotation of the saw blade, and cutting dust will block the light. The ring light source 94 is triggered and synchronized with the control unit 8, and high-frequency flashing supplementary light is generated at the moment of camera exposure.
[0035] refer to Figure 3 and Figure 5 As shown, the five-axis linkage tool head unit 6 also includes three independent servo drive motors, which are as follows: The first servo motor 51 is used to drive the Y-axis carriage 5 to move along the gantry 2; The second servo motor 641 is used to drive the slewing bearing 64 to tilt. The third servo motor 67 is used to drive the spindle 68 and the circular saw blade 65 to rotate. It should be noted that the third servo motor 67 is fixedly connected to the top surface of the cutter head holder 66, the second servo motor 641 is fixedly connected to the inside of the cutter head holder 66, and the first servo motor 51 is fixedly connected to the rear side of the Y-axis slide. The first servo motor 51, the second servo motor 641 and the third servo motor 67 are all closed-loop control servo motors. Among them, the second servo motor 641 meshes with the input gear of the slewing bearing 64 through a reducer to ensure precise control of the cutter head yaw angle.
[0036] refer to Figure 1 and Figure 6 As shown, it also includes an adaptive support unit 10, which is connected below the cutter head seat 66 of the cutting actuator and located on both sides of the circular saw blade 65. The adaptive support unit 10 includes a support roller 101 for holding the wood-plastic flooring from below during cutting, providing a reverse support force to prevent the board from vibrating or warping. It should be noted that, since the material of the wood-plastic flooring is removed at the cutting point, the rigidity will drop instantly, which can easily cause high-frequency vibration. In this embodiment, the support rollers 101 of the adaptive support unit 10 are located on the left and right sides of the circular saw blade 65 and are slightly lower than the lowest point of the saw blade. When the saw blade presses down to cut, the support rollers 101 first or simultaneously contact the surface of the board. The support rollers 101 provide "rigid support" close to the cutting point, effectively suppressing the up and down vibration of the board and ensuring the smoothness of the cut surface.
[0037] refer to Figure 6 As shown, the surface of the support roller 101 is provided with a conveying thread along its axial direction. The spiral direction of the conveying thread is configured such that when the wood-plastic flooring is conveyed on the feed roller 1 and passes through the support roller 101, the roller surface applies a frictional force to the bottom surface of the board pointing towards the center line of the board. It should be noted that the outer circumferential surface of the support roller 101 is machined with bidirectional feed threads (or herringbone patterns). The support roller located on the left side of the saw blade has its thread direction configured to generate an axial thrust to the right (i.e., towards the center of the saw blade) when the roller rotates with the movement of the board. The support roller located on the right side of the saw blade has its thread direction configured to generate an axial thrust to the left (i.e., towards the center of the saw blade). When the wood-plastic flooring exhibits a slight deviation or lateral sliding tendency during the feeding process, the bottom surface of the board contacts the surface of the rotating support roller 101. Due to the presence of the threads / patterns, the roller surface is no longer a smooth friction surface, but generates an active correction force pointing towards the center line of the board. This force can counteract the lateral deviation of the board in real time, eliminating the need for an additional lateral clamping cylinder, thereby avoiding squeezing damage to the side of the board.
[0038] refer to Figure 6As shown, the adaptive support unit 10 also includes a height adjustment mechanism 102, which connects the support roller 101 and the cutter head seat 66, and is used to adjust the initial height of the support roller 101 according to the thickness of the wood-plastic flooring. It should be noted that the height adjustment mechanism 102 is located between the support roller 101 and the cutter head seat 66. The height adjustment mechanism 102 includes a lead screw slider assembly or an eccentric wheel adjustment assembly. The operator can manually or electrically adjust the height of the support roller 101 relative to the cutter head seat 66 according to the thickness of the wood-plastic flooring being processed (e.g., 15mm or 25mm specifications), ensuring that the support roller 101 can always provide the optimal support position (usually slightly higher than or in close contact with the bottom surface of the board) regardless of the change in board thickness.
[0039] The working principle of this invention is as follows: When processing wood-plastic composite flooring using this device, the wood-plastic composite flooring to be processed needs to be transported by manual labor or conveyor belt to the top of the feed roller conveyor 1. The gantry 2 is adjusted according to the parameters required for cutting the wood-plastic composite flooring, and the position of the five-axis linkage cutter head unit 6 is adjusted to conform to the cutting path of the wood-plastic composite flooring being processed. After the wood-plastic composite flooring to be processed is conveyed to the processing area by the feed roller conveyor 1, it stops running and is observed by the follow-up industrial camera 93. The follow-up industrial camera 93 can still achieve millimeter-level or even higher precision positioning and obstacle avoidance in high-speed dynamic operation, thereby ensuring that the wood-plastic composite flooring stops stably and accurately in the processing area. After the wood-plastic composite flooring enters the processing area, a specific spatial pattern encoded by the structured light projection module 4 is projected onto the surface of the wood-plastic composite flooring. The deformation of the projected pattern is observed by the different protrusions on the surface of the wood-plastic composite flooring. The projector observes the deformed pattern and, combined with its own algorithm, observes the shallow micro-cracks and warping undulations on the surface of the wood-plastic composite flooring. Then, the control unit 8 controls part of the structure of the five-axis linkage cutter head unit to process the surface of the wood-plastic composite flooring. When processing is required after observation, the feed roller conveyor 1 needs to be activated via control unit 8. The feed roller conveyor continues to transport the wood-plastic composite flooring. The wood-plastic composite flooring will first contact the adaptive support unit 10. After the wood-plastic composite flooring contacts the support rollers 105 and 101, the thrust is transmitted to the cutter head seat 66 through the support rollers 105 and 101. The cutter head seat 66 will squeeze the elastic element 62, causing the circular saw blade 69 and 65 to rise a certain distance, so that the circular saw blade 69 and 65 are in horizontal contact with the top surface of the wood-plastic composite flooring. This allows the circular saw blade 69 and 65 to cut the shallow defects and warped deformations on the surface of the wood-plastic composite flooring. Through the conveying threads provided on the surface of the support rollers 105 and 101, the wood-plastic composite flooring moves from both sides towards the middle as it passes over the surface of the support rollers 105 and 101. Applying thrust, in conjunction with the gravity pressure of the adaptive support unit 10, maintains the stability of the wood-plastic flooring during the moving and processing process and prevents the wood-plastic flooring from shifting when processed by the circular saw blades 69 and 65, ensuring cutting accuracy. When the thickness of the wood-plastic flooring is different, the height adjustment mechanism 104 and height adjustment mechanism 102 can be manually adjusted. The height adjustment mechanism 104 and height adjustment mechanism 102 adjust the distance between the support roller 101 and the cutter head seat 66, so that the height of the support roller 101 and the height adjustment mechanism 102 does not affect the working surface of the circular saw blade 65. The reverse-mounted threaded rotation adjusts the angle between the adjusting arm 103 and the bracket 102, so that the adjusting arm 103 and the bracket 102 are connected by a shaft rotation, and the thickness of the wood-plastic flooring is appropriately adjusted. When the wood-plastic composite flooring comes into contact with the circular saw blades 69 and 65 during movement, the third servo motor 67 rotates under the drive of the main shaft 68. The saw teeth of the circular saw blades 69 and 65 perform detailed processing on the surface of the wood-plastic composite flooring. Combined with the comprehensive data analysis of the binocular stereo vision module 3, the structured light projection module 4, and the follow-up industrial camera 93 (which uses a ring light source 94 to make the protruding parts of the wood-plastic composite flooring visible), when the position of shallow defects and warping deformation is different from the position of the circular saw blade, the second servo motor 643641 drives the outer ring 641 to rotate under the action of the transmission structure. Under the action of the inner ring 642 connected to the carriage 61 through the lifting plate 63, the inner ring 61 will not rotate, while the outer ring 641 drives the cutter head seat. Rotating at 66, the cutter head holder 64166 drives the rotary servo motor 67 to rotate above the position to be processed. The rotary servo motor 67 drives the circular saw blade 69 and 65 through the spindle 68 to process the shallow defects and warped deformation positions, ensuring that the surface of the wood-plastic flooring is clean and flat after processing. The gantry 2 and the Y-axis slide 5 coordinate interpolation feed. The second servo motor 643641 synchronously follows the tangential angle of each micro segment of the path to drive the slewing bearing to swing, so that the tangential direction of the cutting edge of the circular saw blade 69 and 65 always coincides with the current feed tangential direction. The follow-up industrial camera 93 continuously captures the image of the board surface and feeds back the deviation between the actual defect boundary and the fitted path to the control unit 8, which then makes slight corrections to the swing angle and feed speed. When the cutting head travels to the warped and concave area, it skips it and does not perform cutting.
[0040] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A wood-plastic composite flooring processing equipment, characterized in that, include: A frame, on which a feed roller conveyor (1) for conveying wood-plastic flooring is provided; A gantry (2) spans across the feed roller conveyor (1); A cutting actuator is movably mounted on the gantry (2) and includes a five-axis linkage cutter head unit (6). A multimodal vision inspection system is installed on the gantry (2) to scan the surface of the wood-plastic floor before cutting in order to identify and distinguish between shallow defects and geometric deformations. A follow-up visual feedback system, which is integrated into the cutting execution mechanism, is used to acquire cutting path images in real time during the cutting process; The control unit (8) is electrically connected to the five-axis linkage cutter head unit (6), the multimodal vision detection system and the follow-up vision feedback system, respectively. It is used to plan the cutting path according to the detection information and synchronously control the yaw angle of the five-axis linkage cutter head unit (6) so that its cutting edge is always consistent with the tangential direction of the cutting path.
2. The wood-plastic flooring processing equipment according to claim 1, characterized in that, The multimodal vision inspection system includes: A binocular stereo vision module (3) is installed on the gantry (2) and is used to acquire three-dimensional morphological information of the wood-plastic floor surface; The structured light projection module (4), which is set on the gantry (2), is used to project a specific pattern onto the surface of the wood-plastic floor to enhance the ability to identify shallow microcracks.
3. The wood-plastic flooring processing equipment according to claim 2, characterized in that, The five-axis linkage tool head unit (6) includes: Y-axis carriage (5) installed on gantry (2); A transverse support (61) that can move along the Y-direction carriage (5); Slewing bearing (64) located below the transverse support (61); A cutter head holder (66) is fixed to the output end of the slewing bearing (64). The spindle (68) and the circular saw blade (65) are mounted on the cutter head holder (66). The slewing bearing (64) drives the cutter head holder (66) to oscillate around the Z-axis.
4. The wood-plastic flooring processing equipment according to claim 3, characterized in that, The five-axis linkage cutter head unit (6) also includes a floating lifting mechanism, which includes a lifting plate (63) and an elastic element (62). The lifting plate (63) is slidably mounted on the transverse support (61) and connected to the inner ring of the slewing bearing (64); The elastic element (62) is disposed between the transverse support (61) and the lifting plate (63) to provide downward elastic pressure to the cutter head to adapt to the surface of the plate. The inner wall of the Y-axis slide (5) is provided with a slide rail (7) that matches the transverse support (61).
5. The wood-plastic flooring processing equipment according to claim 4, characterized in that, The follow-up vision unit includes: Arc-shaped cantilever (91) fixed to the cutter head seat (66) of the cutting actuator. A follow-up camera (93) is installed at the end of the arc-shaped cantilever (91), and the field of view of the follow-up camera (93) covers the cutting area of the circular saw blade (65). Hollow conductive slip ring (92) is located at the top of the cutter head seat (66). The signal cable of the follow-up camera (93) passes through the central hole of the hollow conductive slip ring (92) and is connected to the external control unit (8).
6. The wood-plastic flooring processing equipment according to claim 5, characterized in that, The follow-up vision unit also includes a ring light source (94), which is disposed around the follow-up camera (93) and is used to provide synchronous supplementary lighting to the cutting area during the cutting process.
7. The wood-plastic flooring processing equipment according to claim 3, characterized in that, The five-axis linkage tool head unit (6) also includes three independent servo drive motors, which are: The first servo motor (51) is used to drive the Y-axis carriage (5) to move along the gantry (2); The second servo motor (641) is used to drive the slewing bearing (64) to oscillate; The third servo motor (67) is used to drive the spindle (68) and the circular saw blade (65) to rotate.
8. The wood-plastic flooring processing equipment according to claim 1, characterized in that, It also includes an adaptive support unit (10), which is connected below the cutter head seat (66) of the cutting actuator and located on both sides of the circular saw blade (65); The adaptive support unit (10) includes a support roller (101) for supporting the wood-plastic flooring from below during cutting, providing a reverse support force to prevent the board from vibrating or warping.
9. The wood-plastic flooring processing equipment according to claim 8, characterized in that, The surface of the support roller (101) is provided with a conveying thread along its axial direction. The spiral direction of the conveying thread is configured such that when the wood-plastic flooring is conveyed on the feed roller (1) and passes through the support roller (101), the roller surface applies a frictional force to the bottom surface of the board pointing towards the center line of the board.
10. A wood-plastic flooring processing equipment according to claim 8, characterized in that, The adaptive support unit (10) also includes a height adjustment mechanism (102), which connects the support roller (101) and the cutter head seat (66) to adjust the initial height of the support roller (101) according to the thickness of the wood-plastic flooring.