Multifunctional numerical control laser cutting processing equipment

Abstract

This invention relates to the field of laser cutting equipment technology and discloses a multifunctional CNC laser cutting processing equipment, including a machine frame. A workpiece support platform is provided inside the machine frame, and a workpiece positioning fixture is provided on the outer periphery of the workpiece support platform. A horizontal linear module is mounted on the machine frame, and a vertical linear module is mounted outside the horizontal linear module. A mounting base is mounted outside the vertical linear module, and a laser cutting head assembly is fixedly connected to the outside of the mounting base. Two connecting plates are symmetrically fixedly connected to the outside of the mounting base, and the connecting plates have variable track grooves inside to achieve trajectory conversion. Through a flip-type pressing structure, the plate material can be automatically and synchronously pressed when the cutting head descends, effectively solving the problems of high-frequency vibration and local material lifting during high-speed cutting of thin plates, avoiding deformation of irregularly shaped workpieces, significantly improving the flatness and dimensional accuracy of the cut, and reducing the rate of burrs and burnt edges.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, specifically to a multifunctional CNC laser cutting processing equipment. Background Technology

[0002] CNC laser cutting, as a high-precision and high-efficiency method for processing sheet metal, has been widely used in sheet metal manufacturing, construction machinery, rail transportation, and other industries. Multifunctional CNC laser cutting equipment can complete arbitrary shape cutting of flat sheet metal, offering strong processing adaptability and making it a core piece of equipment in modern sheet metal processing.

[0003] In actual cutting processes, especially when processing thin plates, hollow parts, and irregularly shaped parts, the stability of the sheet material directly affects the cutting accuracy and cross-sectional quality. Existing laser cutting equipment is usually equipped with an auxiliary clamping device to suppress sheet vibration and reduce warping deformation. Common clamping structures are mostly fixed clamping blocks and simple elastic clamping strips, which can clamp and position the sheet material to a certain extent. However, under high-speed continuous cutting conditions, there are still objective shortcomings: First, the clamping position is fixed or the follow-up range is limited, making it difficult to always adhere to both sides of the cutting area, thus limiting the effect on suppressing local vibration; second, the clamping force is mostly a constant value and cannot be adaptively adjusted according to the thickness of the sheet material, making thin plates easily damaged by pressure and thick plates insufficiently clamped. To address these issues, those skilled in the art propose a multifunctional CNC laser cutting processing equipment to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multifunctional CNC laser cutting processing equipment, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-functional CNC laser cutting processing equipment, including an equipment frame, a workpiece bearing platform provided on the inner side of the equipment frame, a workpiece positioning fixture provided on the outer periphery of the workpiece bearing platform, a horizontal linear module installed on the equipment frame, a vertical linear module installed on the outer side of the horizontal linear module, a mounting base installed on the outer side of the vertical linear module, and a laser cutting head assembly fixedly connected to the outer side of the mounting base; Two connecting plates are symmetrically fixedly connected to the outer side of the mounting base. The connecting plates have a track-changing groove inside for trajectory conversion. A guide wheel is rolled within the track-changing groove. A connecting block is fixedly connected to the outer side of the guide wheel. A rotating component is fixedly connected to the outer side of the connecting block. A connecting plate is fixedly connected to the outer side of the rotating component. The mounting base is fixedly connected to a follow-up traction plate via a connecting strip. An elastic push rod is slidably connected to a through hole inside the connecting plate. A return spring providing elastic restoring force is sleeved on the outside of the elastic push rod. A fixed plate is slidably connected to the outside of the elastic push rod. One end of the elastic push rod is movably connected to an extrusion component via a bearing. A groove is formed on the outer surface of the extrusion component, and a pulley is rolledly connected inside the groove. A pneumatic linkage mechanism is also installed on the mounting base.

[0006] Through the above technical solution, the laser cutting head assembly is moved by the horizontal and vertical linear modules to realize CNC laser cutting of the sheet metal. By utilizing the cooperation of the connecting plate, the variable track slide, the guide wheel, the connecting block, the rotating parts and the connecting plate, the pressure structure is flipped and switched as the cutting head rises and falls. The air circuit linkage mechanism cooperates with the cutting action to complete the removal of smoke and dust and the cleaning of molten slag, thereby improving the cutting accuracy and processing quality.

[0007] Preferably, the pneumatic linkage mechanism includes a fixed cylinder and an electric telescopic rod. Both the fixed cylinder and the electric telescopic rod are fixedly connected to one side of the top of the mounting base. A rubber piston is slidably connected inside the fixed cylinder, and a piston push rod is fixedly connected to the outside of the rubber piston. The piston push rod is fixed to the telescopic end of the electric telescopic rod.

[0008] Through the above technical solution, the electric telescopic rod drives the piston push rod and the rubber piston to reciprocate within the fixed cylinder, thereby achieving the output of air pressure changes.

[0009] Preferably, the outer side of the fixed cylinder is connected to a connecting pipe and an air inlet pipe in sequence. One end of the connecting pipe is connected to a negative pressure pipe and an air jet pipe in sequence through a three-way valve. The outer surface of the negative pressure pipe is connected to a negative pressure pipe. Both the air jet pipe and the negative pressure pipe are equipped with control valves to control the on / off state.

[0010] By using the above technical solution, the pipeline can be switched between a three-way valve and a control valve to achieve two functions: negative pressure dust extraction and positive pressure molten slag spraying, which can be adapted to the needs of different cutting processes.

[0011] Preferably, both the intake pipe and the connecting pipe are equipped with one-way valves, and the two one-way valves have opposite directions of conduction; a collection box is fixedly connected to the outside of the mounting base, and the cross-sectional area of ​​the fixed cylinder is larger than that of the connecting pipe, so as to form a variable diameter pressurization structure.

[0012] Through the above technical solutions, the one-way valve ensures unidirectional airflow and avoids pressure leakage, while the variable diameter pressurizing structure can increase airflow velocity and pressure, thereby enhancing the effects of smoke and dust removal and slag purging.

[0013] Preferably, the variable track slide is bent in shape, with a horizontal guide section at the top, a horizontal guide section at the bottom, and an inclined transition section in the middle. The guide wheel rolls along the bent trajectory to achieve switching between two working positions: connecting plate storage and pressing down.

[0014] Through the above technical solution, the curved variable track groove can convert the linear motion of the guide wheel into a flipping action, so that the connecting plate can switch between the storage and pressing states, and adapt to the lifting action of the cutting head.

[0015] Preferably, one end of the reset spring is fixedly connected to the inner side of the connecting plate, and the other end of the reset spring is fixedly connected to the outer side of the fixing plate. The rotating component is rotatably disposed at the through hole on the inner side of the connecting plate.

[0016] Through the above technical solution, the reset spring provides a reset force for the elastic push rod, ensuring that the pressing structure automatically resets after the action is completed, and the rotating part provides a rotation fulcrum for the flipping of the connecting plate.

[0017] Preferably, two trigger switches are fixed on the outer side of one of the connecting plates. The follow-up traction plate is located on the outer side of the connecting plate and can intermittently contact the trigger switches when it moves up and down with the vertical linear module to output a position trigger signal.

[0018] Through the above technical solution, the trigger switch can detect the lifting position of the follow-up traction plate, output a signal to control the air circuit linkage mechanism to switch the working mode, and realize the linkage between the cutting action and the air circuit function.

[0019] Preferably, the collection box is located below the mounting base, one end of the negative pressure pipe extends into the collection box, and the collection box is equipped with a filter structure to intercept smoke and slag particles.

[0020] With the above technical solution, the collection box is close to the cutting area, which can collect the smoke and slag adsorbed by negative pressure in a timely manner. The filter structure can intercept solid particles and prevent impurities from escaping or entering the gas pipeline.

[0021] Preferably, two guide rods are slidably connected to the outer through hole of the follow-up traction plate, and the two sides of the guide rods are fixedly connected to the outer wall of the connecting plate.

[0022] Through the above technical solution, the guide rod plays a guiding and limiting role in the lifting and lowering movement of the follower traction plate, preventing the follower traction plate from deviating from its position.

[0023] Preferably, the fixed cylinder is a sealed cylindrical structure, and the piston push rod is slidably disposed along the axial direction of the fixed cylinder.

[0024] Through the above technical solution, the sealed cylindrical structure ensures the sealing of the inside of the fixed cylinder, and the piston push rod sliding along the axis can reduce the motion resistance and ensure the stable reciprocating motion of the rubber piston.

[0025] This invention provides a multifunctional CNC laser cutting processing equipment. It has the following beneficial effects: 1. This invention uses a flip-type pressing structure to automatically and synchronously press the sheet metal as the cutting head descends, effectively solving the problems of high-frequency vibration and local material lifting during high-speed cutting of thin plates. The rollers flexibly contact the sheet metal and can roll synchronously with the cutting trajectory, applying uniform pressure to both sides of the cutting area, avoiding deformation of irregularly shaped workpieces, significantly improving the flatness and dimensional accuracy of the cut, and reducing the rate of burrs and burnt edges.

[0026] 2. This invention utilizes a gas path switching structure linked to the cutting action to enable close-range suction of high-temperature fumes during cutting, quickly intercepting dust and effectively preventing fumes from rising and contaminating the laser lens. After cutting, it can blow away residual slag and debris, automatically completing slag removal and cleaning, reducing manual cleaning processes, and improving the cleanliness of the workpiece surface. Thus, through the integrated gas path switching structure linked to the cutting action, it can achieve multiple functions such as follow-up smoke extraction, fixed-point slag blowing, and plate pressing, realizing the multi-functional integration of the equipment. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the equipment frame of the present invention; Figure 3 This is a schematic diagram of the connecting plate structure of the present invention; Figure 4 This is a schematic diagram of the mounting base structure of the present invention; Figure 5 This is a schematic diagram of the connecting plate structure of the present invention; Figure 6 This is a schematic diagram of the collection box structure of the present invention; Figure 7 This is a schematic diagram of the variable track slide structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention; Figure 9 for Figure 7 Enlarged view of point A in the middle; Figure 10 for Figure 3 Enlarged view of point B in the middle.

[0028] The components include: 1. Equipment frame; 2. Workpiece support platform; 3. Workpiece positioning fixture; 41. Horizontal linear module; 42. Vertical linear module; 43. Laser cutting head assembly; 44. Mounting base; 51. Connecting plate; 52. Follower traction plate; 53. Connecting plate; 54. Track changing slide; 55. Extrusion part; 56. Connecting strip; 57. Elastic push rod; 58. Fixing plate; 59. Return spring; 510. Rotating part; 511. Connecting block; 512. Guide wheel; 513. Roller; 61. Collection box; 62. Negative pressure pipe one; 63. Jet pipe; 64. Negative pressure pipe two; 65. Connecting pipe; 66. Fixing cylinder; 67. Rubber piston; 68. Piston push rod; 69. Electric telescopic rod; 610. Air inlet pipe; 7. Trigger switch. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see the appendix Figure 1 To be continued Figure 10 This invention provides a multi-functional CNC laser cutting processing equipment, with the equipment frame 1 serving as the main body for bearing and supporting the entire machine. The equipment frame 1 provides a stable reference for the movement and positioning of the entire machine. A workpiece bearing platform 2 is horizontally fixed in the middle of the inner side of the equipment frame 1. The workpiece bearing platform 2 is used to ensure that the sheet metal is naturally flat after placement, reducing the problem of sheet metal warping caused by unevenness of the platform surface. The surface of the workpiece bearing platform 2 can be covered with anti-slip mats or grid support strips according to processing requirements to further enhance the uniformity of sheet metal support, avoid local collapse of thin sheets, and facilitate the natural falling of cutting waste and debris, reducing accumulation on the platform surface. A workpiece positioning fixture 3 is fixedly installed on the outer periphery of the workpiece bearing platform 2. The workpiece positioning fixture 3 is arranged symmetrically in a rectangle along the edge of the bearing platform and consists of a fixed positioning block and a cylinder, wherein the output end of the cylinder is connected to the fixed positioning block. The fixed connection of the position block allows for fine adjustment of the clamping position along the longitudinal direction to fix and clamp the plate. A horizontal linear module 41 is installed horizontally on the top of the equipment frame 1. The horizontal linear module 41 is arranged along the direction of the frame beam and can drive the cutting head assembly to move horizontally. A vertical linear module 42 is installed vertically on the outside of the sliding seat of the horizontal linear module 41. The vertical linear module 42 also adopts a servo drive and precision linear guide structure and is orthogonally arranged with the horizontal linear module 41 to form a two-dimensional motion platform. The orthogonal cooperation between the vertical linear module 42 and the horizontal linear module 41 enables the laser cutting head to move in all directions. This is a mature existing technology and will not be repeated here.

[0031] A mounting base 44 is fixedly connected to the outer side of the sliding end of the vertical linear module 42. The mounting base 44 is rigidly connected to the output end of the vertical linear module 42 to ensure that the cutting head and the pressing mechanism are synchronized during the lifting process. A laser cutting head assembly 43 is fixedly connected to the center of the front end of the mounting base 44. The laser cutting head assembly 43 can output a high energy density laser beam to cut metal plates such as carbon steel, stainless steel and aluminum alloy. The laser cutting head assembly 43 is coaxially fixedly connected to the mounting base 44 to ensure the stability of the laser beam path. The mounting base 44 has symmetrically fixed connecting plates 51 on the left and right sides. The connecting plates 51 provide a stable installation reference for the pressing and flipping mechanism. The two connecting plates 51 are arranged in a mirror symmetrical manner to ensure that the left and right pressing mechanisms are consistent in structure, thereby ensuring synchronized operation and avoiding uneven force on the plate caused by excessive or loose pressing on one side, which could lead to local deformation.

[0032] The connecting plate 51 has a track-changing groove 54 inside, which realizes track conversion. The track-changing groove 54 has a continuously curved groove structure, divided into an upper horizontal guide section, a middle inclined transition section, and a lower horizontal guide section. The three sections are smoothly transitioned. The track-changing groove 54 and the guide wheel 512 roll together to form a track conversion pair, which converts the vertical linear motion of the follower traction plate 52 into the 180° flipping motion of the connecting plate 53. The upper horizontal section is used to maintain the retracted posture of the connecting plate 53, the middle inclined section is the track turning area, which deflects the direction of the roller movement and drives the connecting plate 53 to flip, and the lower horizontal section is used to maintain the vertical downward posture of the connecting plate 53. The guide wheel 512 is rolled inside the track-changing groove 54. The guide wheel 512 and the track-changing groove 54 are rolled frictionally connected to each other, which can reduce the resistance of the flipping motion. The connecting block 511 is fixedly connected to the outside of the guide wheel 512. One end of the connecting block 511 is coaxially fixedly connected to the guide wheel 512, and the other end is fixedly connected to the guide wheel 512. The end is rigidly connected to the rotating part 510. The connecting block 511 converts the rolling displacement of the guide wheel 512 in the variable track groove 54 into the rotational torque of the rotating part 510. The rotating part 510 is fixedly connected to the outside of the connecting block 511. The axis of the rotating part 510 is arranged horizontally and parallel to the connecting plate 51. It can drive the connecting plate 53 to rotate 180° around its axis. The connecting plate 53 is fixedly connected to the outside of the rotating part 510. The connecting plate 53 is symmetrically arranged on both sides of the mounting base 44 and rotates synchronously with the rotating part 510. When the connecting plate 53 is horizontally stored, it is close to the side of the mounting base 44. When it is vertically pressed down, it is perpendicular to the surface of the plate, ensuring that the pressing force is vertically downward. The connecting plates 53 on both sides rotate synchronously. Together with the elastic push rod 57, the return spring 59, the extrusion part 55, and the roller 513, they form a symmetrical pressing structure. When the cutting head moves down, it can automatically fit the two sides of the plate and continuously apply flexible pressure, effectively suppressing the technical problems of high-frequency vibration and warping deformation of thin plates.

[0033] The rear end of the mounting base 44 is fixedly connected to the follower traction plate 52 via a connecting strip 56. The follower traction plate 52 is a high-strength flat plate structure, which is rigidly connected to the mounting base 44 via the connecting strip 56. It can rise and fall synchronously with the vertical linear module 42, providing stable traction power for the tilting mechanism. The left and right sides of the follow-up traction plate 52 are slidably engaged with the guide rods on the connecting plates 51 on both sides. During the lifting and lowering process, it applies stability to the flipping mechanism, drives the guide wheel 512 to slide along the track changing groove 54, and drives the connecting plate 53 to flip. When moving upward, it pulls in the opposite direction, driving the flipping mechanism to reset. Two guide rods are slidably connected at the through hole on the outer side of the follow-up traction plate 52. The two ends of the guide rods are rigidly fixed to the outer wall of the connecting plate 51. The guide rods are used to ensure that the follow-up traction plate 52 moves smoothly. The inner through hole of the connecting plate 53 is vertically slidably connected to the elastic push rod 57. The elastic push rod 57 is clearance-fitted with the through hole of the connecting plate 53. The lower end of the elastic push rod 57 is connected to the extrusion part 55 and the roller 513, and the upper end is provided with elastic support by the return spring 59. When the connecting plate 53 is pressed vertically downward, it can extend downward and compress the spring to generate a flexible clamping force. During the cutting process, it adaptively expands and contracts with the slight deformation of the plate, keeping the roller 513 in continuous contact with the surface of the plate, with uniform pressure, thereby avoiding rigid pressure damage to the thin plate. If the plate is not pressed tightly enough, a return spring 59 is fitted on the outside of the elastic push rod 57. One end of the return spring 59 is fixed to the inside of the connecting plate 53, and the other end is fixed to the outside of the fixing plate 58. After installation, it is in a pre-compressed state, providing a stable elastic return force for the elastic push rod 57. The elastic push rod 57 is slidably connected to the fixing plate 58, which is fixed to the inside of the connecting plate 53, providing a fixed support point for the return spring 59 and limiting the maximum downward stroke of the elastic push rod 57 to prevent excessive compression of the spring. The lower end of the elastic push rod 57 is movably connected to the extrusion component 55 through a bearing. The extrusion component 55 is an arc-shaped rigid block that can evenly transmit the elastic force of the elastic push rod 57 to the roller 513. An arc-shaped groove is opened on the outer surface of the extrusion component 55, and the roller 513 is rolled in the groove. The roller 513 can roll freely on the surface of the plate as the cutting head moves, continuously applying flexible pressure to both sides of the cutting seam, effectively suppressing vibration, material lifting, and warping, thereby improving the flatness of the cut.

[0034] A pneumatic linkage mechanism is fixedly installed on one side of the top of the mounting base 44. This mechanism consists of a fixed cylinder 66, an electric telescopic rod 69, a rubber piston 67, a piston push rod 68, a connecting pipe 65, an air inlet pipe 610, a negative pressure pipe 62, a negative pressure pipe 64, an air jet pipe 63, a control valve, and a one-way valve. It is linked with a trigger switch 7, a follow-up traction plate 52, and a vertical linear module 42 to achieve automatic smoke extraction during downward cutting and automatic blowing during lifting. The fixed cylinder 66 is a sealed cylindrical structure with a rubber piston 67 slidably connected inside. The rubber piston 67 and the inner wall of the fixed cylinder 66 form a sealed cavity, allowing for reciprocating sealing motion and generating periodic air pressure changes. A piston push rod 68 is fixedly connected to the outside of the rubber piston 67. The piston push rod 68 slides along the axis of the fixed cylinder 66, and its outer end is rigidly connected to the telescopic end of the electric telescopic rod 69. The electric telescopic rod 69 provides reciprocating power, driving the rubber piston... The plug 67 reciprocates within the fixed cylinder 66, providing a stable air pressure power source for the air path. The cross-sectional area of ​​the fixed cylinder 66 is larger than that of the connecting pipe 65, forming a variable diameter pressurization structure. When the gas flows from the large cross-section cavity to the small cross-section pipe, the flow velocity increases sharply, resulting in a pressure drop. This significantly enhances the negative pressure suction and purging pressure, ensuring rapid removal of near-field dust. The fixed cylinder 66 is connected to the connecting pipe 65 and the air inlet pipe 610 in sequence. The connecting pipe 65 is connected to the negative pressure pipe 62 and the jet pipe 63 via a three-way valve. The negative pressure pipe 62 is connected to the negative pressure pipe 64, expanding the negative pressure adsorption range and bringing it closer to the cutting point to quickly remove high-temperature dust and metal vapor, preventing dust from rising and contaminating the laser lens. The jet pipe 63 is oriented towards the cutting trajectory and sprays high-pressure airflow when lifted to blow away residual slag and debris, automatically cleaning the cutting area and reducing manual cleaning, thereby improving the cleanliness of the workpiece surface. One-way valves are installed in both the intake pipe 610 and the connecting pipe 65. The two one-way valves have opposite directions of conduction, forming a one-way intake and one-way exhaust circuit effect to prevent airflow backflow. A collection box 61 is fixedly connected to the outside of the mounting base 44. The collection box 61 is located below the side of the mounting base 44. The end of the negative pressure pipe 62 extends into the box. The inside is equipped with multiple layers of filters and a settling chamber, which can effectively intercept molten slag particles and dust, and effectively prevent dust from escaping and polluting the environment. Two trigger switches 7 are fixed to the outside of one of the connecting plates 51. The trigger switches 7 are contact micro switches that can be intermittently contacted when the traction plate 52 moves up and down with the vertical module. When the downward contact of the lower switch can output a smoke signal, the upward contact of the upper switch can output a purge signal.

[0035] Working principle: When using this device, its operating principle includes the following: When this equipment is in operation, the sheet metal to be cut is first placed on the workpiece support platform 2, and the workpiece positioning fixture 3 completes the positioning and clamping. The equipment relies on the horizontal linear module 41 and the vertical linear module 42 to drive the laser cutting head assembly 43 to move in the plane and height directions, realizing laser cutting of the sheet metal along any trajectory. When cutting starts, when the vertical linear module 42 drives the laser cutting head assembly 43 and the mounting base 44 to move downward, the follow-up traction plate 52 moves downward synchronously, driving the guide wheel 512 to slide in the track changing slide 54. The track changing slide 54 is a bent structure with a horizontal section at the top, an inclined transition section in the middle, and a horizontal section at the bottom. When the guide wheel 512 slides from the upper horizontal section into the inclined transition section, the direction of movement is deflected, causing the connecting block 511, the rotating part 510, and the connecting plate 53 to rotate 180° around the axis of the rotating part 510, flipping from a horizontal storage state to a vertical pressing state. When the guide wheel 512 slides to the lower horizontal section, it flips... After the rotation is completed, the connecting plate 53 maintains a vertical posture and presses down. After pressing down, the roller 513 contacts the surface of the plate, the return spring 59 is compressed and generates elastic clamping force, so that the roller 513 always adheres to the plate with flexible pressure, effectively suppressing the high-frequency vibration and local lifting problem generated during high-speed cutting of thin plates, ensuring that the plate is stably attached to the table near the cutting point. During the cutting process, the laser cutting head assembly 43 moves along the surface of the plate, and the entire pressing mechanism moves synchronously. The roller 513 rolls and contacts the surface of the plate, continuously applying uniform flexible pressure to both sides of the cutting area to prevent hollowing and significantly improve cutting accuracy. After the cutting is completed, the laser cutting head assembly 43 is lifted up, the follow-up traction plate 52 moves up synchronously, the guide wheel 512 slides in the opposite direction along the variable track groove 54, returns to the upper horizontal section through the inclined transition section, and drives the connecting plate 53 to rotate 180° in the opposite direction to return to the storage state. The clamping force is automatically released, without affecting the workpiece unloading and subsequent plate placement. During the downward cutting phase, after the laser cutting head assembly 43 is pressed down to its position, the trigger switch 7 is activated and outputs a downward signal. The electric telescopic rod 69 drives the rubber piston 67 to reciprocate within the fixed cylinder 66. Since the cross-sectional area of ​​the fixed cylinder 66 is much larger than that of the connecting pipe 65, the gas velocity increases significantly and the pressure decreases as the gas flows from the large cross-section to the small cross-section, thus forming a stable high-speed negative pressure airflow within the negative pressure pipe 62. At this time, the control valve corresponding to the negative pressure pipe 62 opens, while the control valve corresponding to the jet pipe 63 closes. The high-temperature fumes generated during cutting are quickly drawn in and pass through the negative pressure pipe 62 and the negative pressure pipe... The second part 64 enters the collection box 61, is purified by the filter structure and discharged, effectively preventing the smoke and dust from floating up and contaminating the laser lens. When the cutting is completed, the laser cutting head assembly 43 is lifted up, driving the follow-up traction plate 52 to continue to move upward. The trigger switch 7 detects the upward signal and switches the control valve state. The control valve corresponding to the jet pipe 63 is opened, while the control valve corresponding to the negative pressure pipe 62 is closed. The rubber piston 67 moves down to compress the gas in the fixed cylinder 66, forming a high-pressure airflow. The high-pressure gas is ejected directionally and at high speed from the jet pipe 63 through the connecting pipe 65, blowing away the residual slag on the cutting trajectory and effectively improving the cleanliness of the workpiece surface.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional numerical control laser cutting processing apparatus, characterized by, The equipment includes a frame (1), with a workpiece support platform (2) on the inner side of the frame (1), and a workpiece positioning fixture (3) on the outer periphery of the workpiece support platform (2). A horizontal linear module (41) is installed on the frame (1), and a vertical linear module (42) is installed on the outer side of the horizontal linear module (41). A mounting base (44) is installed on the outer side of the vertical linear module (42), and a laser cutting head assembly (43) is fixedly connected to the outer side of the mounting base (44). Two connecting plates (51) are symmetrically fixedly connected to the outer side of the mounting base (44). A track-changing groove (54) for track conversion is provided inside the connecting plate (51). A guide wheel (512) is rolled inside the track-changing groove (54). A connecting block (511) is fixedly connected to the outer side of the guide wheel (512). A rotating component (510) is fixedly connected to the outer side of the connecting block (511). A connecting plate (53) is fixedly connected to the outer side of the rotating component (510). The mounting base (44) is fixedly connected to the track-changing groove (54) via a connecting strip (56). The moving traction plate (52) is connected to the inner through hole of the connecting plate (53) by an elastic push rod (57). The elastic push rod (57) is fitted with a reset spring (59) that provides elastic reset force. The elastic push rod (57) is slidably connected to a fixing plate (58). One end of the elastic push rod (57) is movably connected to an extrusion piece (55) through a bearing. The outer surface of the extrusion piece (55) is provided with a groove. A pulley (513) is rolled inside the groove. An air circuit linkage mechanism is also installed on the mounting base (44).

2. The multi-functional CNC laser cutting machine according to claim 1, wherein: The pneumatic linkage mechanism includes a fixed cylinder (66) and an electric telescopic rod (69). The fixed cylinder (66) and the electric telescopic rod (69) are both fixedly connected to one side of the top of the mounting base (44). The fixed cylinder (66) is sealed and slidably connected to a rubber piston (67). The rubber piston (67) is fixedly connected to a piston push rod (68) on the outside. The piston push rod (68) is fixed to the telescopic end of the electric telescopic rod (69).

3. The multi-functional CNC laser cutting machine according to claim 2, wherein: The outer side of the fixed cylinder (66) is connected to the connecting pipe (65) and the air inlet pipe (610) in sequence. One end of the connecting pipe (65) is connected to the negative pressure pipe one (62) and the jet pipe (63) in sequence through a three-way valve. The outer surface of the negative pressure pipe one (62) is connected to the negative pressure pipe two (64). The jet pipe (63) and the negative pressure pipe one (62) are both equipped with control valves to control the on and off.

4. The multi-functional CNC laser cutting machine of claim 3, wherein: The intake pipe (610) and the connecting pipe (65) are both equipped with one-way valves with opposite directions of conduction. A collection box (61) is fixedly connected to the outside of the mounting base (44). The cross-sectional area of ​​the fixed cylinder (66) is larger than that of the connecting pipe (65) to form a variable diameter booster structure.

5. The multi-functional CNC laser cutting machine of claim 1, wherein: The variable track slide (54) is bent in shape, with a horizontal guide section at the top, a horizontal guide section at the bottom, and an inclined transition section in the middle. The guide wheel (512) rolls along the bent trajectory to realize the switching between two working positions: storage and pressing of the connecting plate (53).

6. The multifunctional CNC laser cutting processing equipment according to claim 1, characterized in that: One end of the reset spring (59) is fixedly connected to the inner side of the connecting plate (53), and the other end of the reset spring (59) is fixedly connected to the outer side of the fixing plate (58). The rotating part (510) is rotatably disposed at the through hole on the inner side of the connecting plate (53).

7. The multifunctional CNC laser cutting processing equipment according to claim 1, characterized in that: Two trigger switches (7) are fixed on the outside of one of the connecting plates (51). The follow-up traction plate (52) is located outside the connecting plate (51) and can intermittently contact the trigger switches (7) when it moves up and down with the vertical linear module (42) to output position trigger signals.

8. A multifunctional CNC laser cutting processing equipment according to claim 4, characterized in that: The collection box (61) is located below the mounting base (44). The end of the negative pressure pipe (62) extends into the collection box (61). The collection box (61) is equipped with a filter structure to intercept smoke and slag particles.

9. A multifunctional CNC laser cutting processing equipment according to claim 1, characterized in that: Two guide rods are slidably connected at the outer through hole of the follow-up traction plate (52), and the two sides of the guide rods are fixedly connected to the outer wall of the connecting plate (51).

10. A multifunctional CNC laser cutting processing equipment according to claim 2, characterized in that: The fixed cylinder (66) is a sealed cylindrical structure, and the piston push rod (68) is slidably arranged along the axis of the fixed cylinder (66).

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