Laser feeding machine

Abstract

The invention discloses a laser feeding machine, and belongs to the technical field of laser metal cutting. Comprising a lathe bed assembly, a gantry cutting assembly and an exchange assembly with a high-low double-layer layout. The triggering assembly is arranged on the side face of the exchange platform and matched with the jacking assembly, the slag scraping execution assembly and the opening and closing driving assembly at the bottom of the rack, when the platform conducts station switching movement, the triggering assembly mechanically pushes the jacking assembly to act, the slag scraping execution assembly is jacked upwards, and the slag scraping execution assembly is opened and closed; according to the device, automatic cleaning is achieved through platform exchange kinetic energy, an extra power source is not needed, and the problems that the cutting quality is reduced and the manual cleaning efficiency is low due to sword grid slag accumulation are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of laser metal cutting technology, and in particular to a laser feeding machine. Background Technology

[0002] As a highly efficient piece of equipment in the modern metal processing industry, laser cutting machines are typically equipped with two interactively movable worktables. This design allows laser cutting to be performed on one worktable while the other worktable is used for unloading finished products and loading raw materials. This parallel operation of cutting and loading / unloading shortens the equipment's downtime. To reduce damage to the back of the workpiece caused by laser reflection, the worktable surface is generally composed of several parallel serrated support plates, which use their tooth tips to provide point contact support for the metal sheet.

[0003] However, existing technologies have shortcomings in use. During long-term continuous cutting operations, molten metal slag will inevitably adhere to and accumulate on the sides and tips of the supporting tooth plates. Existing dual-station equipment lacks effective online automated cleaning methods, often requiring operators to stop the machine for extended periods periodically to manually knock or use hand tools to remove the hard slag from the tooth plates one by one. This is not only labor-intensive and costly to maintain, but manual cleaning also makes it difficult to ensure the horizontal consistency of the top surface of the tooth plates. The residual slag can easily lift the plate, causing the cutting focus to shift.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a laser feeding machine to solve the technical problem that existing dual-station laser cutting machines lack effective online automated cleaning methods, requiring manual removal of slag from the toothed plates, resulting in high labor intensity and easy deviation of the cutting focus due to uneven toothed plate level.

[0006] The present invention adopts the following technical solution: a laser loading machine. It includes a machine tool housing; a bed assembly disposed inside the machine tool housing; a gantry cutting assembly disposed on the bed assembly; an exchange assembly slidably disposed on the bed assembly, the exchange assembly including an external frame and a sliding rail fixed to the external frame and the bed assembly, a first exchange platform and a second exchange platform moving along the sliding rail, each of the first and second exchange platforms having a plurality of sword grids arranged at intervals; triggering components disposed on the sides of the first and second exchange platforms; lifting components symmetrically disposed on the bottom surface inside the external frame and adapted to be abutted by the triggering components; a slag scraping execution component disposed inside the external frame and located below the sword grids; and an opening / closing drive component fixed to the bottom of the first and second exchange platforms.

[0007] Furthermore, there is a clearance between the sliding track and the inner wall side of the external frame and the bed assembly. The bottom surface of the sliding track is supported and fixed on the external frame and the bed assembly by the base. The first exchange platform is slidably disposed on the top surface of the sliding track by a sliding component fixed on its side. The second exchange platform is slidably disposed on the inner side of the sliding track by a sliding component fixed on its side, thereby forming a switching gap between the first exchange platform located above and the second exchange platform located below. The sliding component includes a mounting box fixed on the side of the corresponding exchange platform and a traveling roller driven by a motor and rotatably disposed in the mounting box.

[0008] Furthermore, the lifting assembly includes a mounting base fixed to the bottom surface of the outer frame and a variable track plate fixed to the mounting base. The surface of the variable track plate is provided with a variable track groove consisting of a horizontal groove and an inclined groove. A transmission pin shaft suitable for being pushed by the triggering component is slidably disposed in the variable track groove. The surface of the transmission pin shaft located in the variable track groove has a flat neck. A limiting groove suitable for limiting the rotation of the transmission pin shaft and adapted to the flat neck is provided on the variable track groove.

[0009] Furthermore, the lifting assembly also includes a support rod, a support platform, a rotating seat, a V-shaped fixed block, a lifting block, and a contact protrusion. The support rod is vertically fixed on the transmission pin, the support platform is fixedly sleeved on the support rod, the rotating seat is disposed on the support platform, the V-shaped fixed block is rotatably connected to the rotating seat via a torsion spring, and the lifting block is concavely movably sleeved on the support rod. The lifting block is located above the support platform, and its bottom surface always abuts against one end of the V-shaped fixed block. The contact protrusion is fixed at the center of the side of the track changer plate near the top, and is adapted to contact one end of the V-shaped fixed block when the transmission pin slides to the inclined high position of the track changer groove, forcing the V-shaped fixed block to rotate around the rotating seat, so that the other end of the V-shaped fixed block pushes the lifting block upward along the support rod. The lifting block is provided with a push rod for lifting the scraping actuator assembly.

[0010] Furthermore, the lifting assembly includes two sets, symmetrically fixed on both sides of the bottom surface of the outer frame, corresponding to the first exchange platform and the second exchange platform, respectively. The setting height of the track-changing slide of the lifting assembly adapted to the first exchange platform is higher than the setting height of the track-changing slide of the lifting assembly adapted to the second exchange platform. The first exchange platform is adapted to move into the outer frame, and its corresponding triggering component moves along the clearance gap. The length of the transmission pin of the lifting assembly adapted to the first exchange platform is greater than the length of the transmission pin of the lifting assembly adapted to the second exchange platform, so that the transmission pin can extend into the clearance gap and contact the corresponding triggering component.

[0011] Furthermore, the triggering component includes a fixed platform, a hinge, a push plate, and a limiting member. The fixed platform is fixed to the side of the first exchange platform and the second exchange platform. The hinge is fixed to the bottom surface of the fixed platform. The push plate is movably connected to the hinge. The limiting member is fixed to the bottom surface of the fixed platform and located on one side of the push plate to restrict the unidirectional rotation of the push plate. The push plate is adapted to remain vertical under its own weight and the resistance of the limiting member when the first exchange platform or the second exchange platform moves to the external frame to push the lifting component. It is also adapted to rotate and fold around the axis of the hinge when the first exchange platform or the second exchange platform returns to the bed assembly.

[0012] Furthermore, the slag scraping execution component includes a fixed frame disposed inside the outer frame and a plurality of cleaning units disposed along the length of the fixed frame. Each set of cleaning units includes two support shafts rotatably disposed on both sides of the inner wall of the fixed frame and a cleaning scraper connected to the support shafts by a torsion spring. In the initial state, the two opposing cleaning scrapers are open outwards, and a gear is fixedly sleeved on one end of the support shaft.

[0013] Furthermore, both the first and second exchange platforms have baffles fixed to their inner walls. The opening and closing drive assembly is fixed to the bottom surface of the baffles. The opening and closing drive assembly includes a support frame, a concave cover, and a drive rack. The support frame is fixed to the bottom surface of the baffle in an inverted T shape. The concave cover is fixed to both ends of the support frame. The drive rack is fixed inside the concave cover. The gear is adapted to mesh with the drive rack when lifted by the lifting assembly, thereby driving the support shaft to rotate and causing the cleaning scraper to close inward to form a conical structure to scrape the two sides of the sword grid.

[0014] Furthermore, the opening and closing drive assembly also includes a boss, a guide rod, a tension spring, and a movable tooth. The boss is fixed to both sides of the concave cover. The guide rod moves vertically through the boss, and the tension spring is sleeved on the guide rod. The movable tooth is movably inserted into the top of the drive rack, and one end of each of the two guide rods is connected to the connecting ears on both sides of the movable tooth. The movable tooth is adapted to provide flexible buffering through the elastic action of the tension spring to maintain the meshing state during the meshing process of the gear and the drive rack.

[0015] Furthermore, the limiting plate and the buffer post are as follows: the limiting plate is fixed to one end of the outer frame, and the buffer post is fixed to the inner side of the limiting plate. The end face of the buffer post is made of flexible material, which is suitable for contacting the first exchange platform or the second exchange platform that has moved to the outer frame for buffering and limiting. Both sides of the inner wall of the first exchange platform and the second exchange platform are fixed with toothed plates. Several slots are opened on the toothed plates along the straight direction, and the two ends of the sword gate are respectively inserted into the slots at intervals.

[0016] The technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0017] This invention discloses a laser loading machine. By configuring a trigger component on the workpiece-carrying exchange assembly, and cooperating with a lifting assembly, a slag-scraping execution assembly, and an opening / closing drive assembly located at the bottom of the frame, a mechanical linkage structure is designed to achieve automatic cleaning using the kinetic energy exchanged between platforms. When the first or second exchange platform moves to the cleaning area, the trigger component on its side accurately captures and mechanically pushes the lifting assembly, lifting the slag-scraping execution assembly, which was originally hidden below the slag grid, upwards. Then, the opening / closing drive assembly drives the cleaning scraper to automatically close and tightly adhere to the slag grid surface, completing the slag-scraping operation synchronously with the platform movement. This design cleverly transforms the auxiliary time for loading and exchanging into cleaning operation time. It eliminates the need for additional complex electrical drive sources and control circuits, reducing equipment manufacturing costs and failure rates. It solves the defects of existing technologies where molten slag accumulation on the slag grid surface leads to uneven workpiece support, affecting cutting accuracy, and high labor intensity and low efficiency in manual cleaning. While ensuring laser cutting quality, it also improves the automation level of the equipment. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0019] In the attached diagram:

[0020] Figure 1 This is an overall schematic diagram of a laser feeding machine according to this application;

[0021] Figure 2 for Figure 1 A schematic diagram of a partial structure;

[0022] Figure 3 for Figure 1 A schematic diagram of a partial structure;

[0023] Figure 4 for Figure 3 A schematic diagram of a partial structure;

[0024] Figure 5 for Figure 5 A schematic diagram of a partial structure;

[0025] Figure 6 for Figure 5 A magnified structural diagram at point A;

[0026] Figure 7 for Figure 5 A schematic diagram of a partial structure;

[0027] Figure 8 for Figure 7 A magnified structural diagram at point B;

[0028] Figure 9 for Figure 7 A schematic diagram of a partial structure;

[0029] Figure 10 for Figure 9 A magnified structural diagram at point C;

[0030] Figure 11 for Figure 9 A magnified structural diagram at point D;

[0031] Figure 12 for Figure 9 The right view;

[0032] Figure label:

[0033] 1. Machine tool housing; 2. Bed assembly; 21. Main frame; 22. Scrap drawer; 24. First exchange platform; 3. Gantry cutting assembly; 31. Gantry beam; 32. Laser head assembly; 33. Feed platform; 34. Telescopic protective cover; 35. X-axis moving module; 4. Exchange assembly; 401. Clearance clearance; 41. External frame; 42. Sliding rail; 43. Second exchange platform; 431. Sliding component; 44. Limiting plate; 441. Buffer column; 45. Gear shaping plate; 46. Sword guard; 48. Baffle plate; 5. Lifting assembly; 51. Mounting base; 52. Variable rail plate; 521. Variable rail groove; 53. Contact protrusion; 54. Transmission pin 55. Shaft; 56. Support rod; 57. Support platform; 58. Rotating seat; 59. V-shaped fixed block; 50. Lifting block; 51. Top rod; 52. Extension pin; 6. Trigger assembly; 63. Fixed platform; 64. Hinge; 75. Push plate; 76. Limiting component; 77. Slag scraping actuator assembly; 78. Fixed frame; 79. Gear; 70. Cleaning unit; 71. Support shaft; 72. Cleaning scraper; 73. Striking rod; 74. Striking ball; 75. Support column; 76. Guide seat; 87. Opening and closing drive assembly; 88. Support frame; 89. Concave cover; 80. Drive rack; 81. Boss; 82. Guide rod; 83. Tension spring; 84. Movable tooth. Detailed Implementation

[0034] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0035] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Reference Figures 1-3As shown in the figure, the laser loading machine provided by the embodiment of the present invention mainly includes a machine tool housing 1, a bed assembly 2 disposed inside the machine tool housing 1, a gantry cutting assembly 3 disposed on the bed assembly 2, and an exchange assembly 4 for carrying and switching workpieces. The bed assembly 2 serves as a supporting base, and the gantry cutting assembly 3 performs X / Y / Z axis linkage cutting operations above the bed assembly 2.

[0037] Specifically, the bed assembly 2 includes a main frame 21, longitudinal guide rails (not shown in the figure) laid on both sides of the top surface of the main frame 21, and a waste drawer 22 set at the bottom of the interior of the main frame 21. A feed platform 33 is slidably arranged on both sides of the upper surface of the main frame 21, which serves as the longitudinal power basis for the entire cutting action.

[0038] The gantry cutting assembly 3 is mounted on the feed platform 33. It comprises a gantry beam 31, a laser head assembly 32, a Y-axis translation module, a telescopic protective cover 34, and an X-axis moving module 35. The gantry beam 31 spans and is fixedly mounted on the feed platform 33. The X-axis moving module 35 is horizontally mounted on the gantry beam 31 and drives the laser head assembly 32 to slide back and forth along the length of the beam (X-axis). The gantry beam 31 achieves Y-axis positioning through the movement of the feed platform 33. A telescopic protective cover 34 is connected between one side of the main frame 21 and the movable end of the Y-axis translation module to protect the transmission mechanism from cutting dust. The laser head assembly 32 is slidably mounted on the sliding end of the X-axis moving module 35 via a Z-axis moving module (not shown in the figure). The laser head assembly 32 achieves precise vertical focusing through a lifting module to accommodate cutting operations of plates of different thicknesses.

[0039] like Figures 2-3 As shown, to achieve seamless switching between the two workstations, the exchange assembly 4 adopts a layered track design. Specifically, the exchange assembly 4 includes an external frame 41 connected to the side of the bed assembly 2. An extended sliding track 42 is fixed on the external frame 41 and the bed assembly 2. In particular, a clearance gap 401 is reserved between the sliding track 42 and the external frame 41 and the inner wall side of the bed assembly 2, and the bottom surface of the sliding track 42 is stably supported by a base. A first exchange platform 24 and a second exchange platform 43 are configured on this track structure.

[0040] The first exchange platform 24 is slidably mounted on the top surface of the sliding track 42 via a sliding component 431 fixed to its side, while the second exchange platform 43 slides on the inner side of the sliding track 42 via the sliding component 431 fixed to its side. This top-and-bottom arrangement creates a switching gap between the upper first exchange platform 24 and the lower second exchange platform 43, ensuring that they do not interfere with each other during the exchange process.

[0041] Each sliding component 431 includes a mounting box fixed to the side of the corresponding exchange platform and a traveling roller driven by a motor and rotatably disposed within the mounting box, enabling automatic movement of the platform. Furthermore, to ensure accurate placement of the exchange, such as... Figures 3-4 As shown, a limiting plate 44 is fixed at one end of the outer frame 41. A buffer column 441 with a flexible end face is fixed on the inner side of the limiting plate 44. The flexible material is preferably rubber or polyurethane. When the first exchange platform 24 or the second exchange platform 43 moves to the loading position of the outer frame 41, the end face of the platform flexibly abuts against the buffer column 441 to achieve buffering and limiting. A toothed plate 45 is symmetrically fixed on both sides of the inner wall of the first exchange platform 24 and the second exchange platform 43. Several slots are opened on the toothed plate 45 along the straight direction. The two ends of several sword grids 46 are respectively inserted into the slots at intervals to support the plate to be cut.

[0042] like Figures 4-6 As shown, in order to solve the technical problem that the molten slag generated during laser cutting easily adheres to the support surface of the sword grid 46, and the long-term accumulation leads to uneven support, affects cutting quality, and has low manual cleaning efficiency, this embodiment of the invention is equipped with an automatic cleaning structure, which is composed of a trigger component 6, a lifting component 5, a slag scraping execution component 7, and an opening and closing drive component 8.

[0043] The triggering components 6 are respectively disposed on the opposite side walls of the first exchange platform 24 and the second exchange platform 43, serving as the power source for the entire cleaning structure. Specifically, the triggering components 6 are assembled from a fixed platform 61, a hinge 62, a push plate 63, and a limiting member 64. The fixed platform 61 is horizontally fixed to the side of the first exchange platform 24 and the second exchange platform 43, while the hinge 62 is installed on the bottom surface of the fixed platform 61. The push plate 63 is movably suspended through the hinge 62, allowing it to hang vertically under its own weight in its natural state. To achieve the function of unidirectional pushing and reverse avoidance, the limiting member 64 is also fixed to the bottom surface of the fixed platform 61 and arranged on one side of the swing path of the push plate 63.

[0044] The limiting member 64 is used to restrict the unidirectional rotation of the push plate 63. When the platform carrying the trigger assembly 6 moves toward the outer frame 41 (i.e., toward the cleaning station), the push plate 63 is resisted and attempts to swing backward, but is immediately stopped by the limiting member 64 behind it, forcing the push plate 63 to maintain a rigid vertical state, so that it can powerfully push the lifting assembly 5 below. When the platform returns to the bed assembly 2, the push plate 63 is resisted in the opposite direction. Since there is no limiting member 64 blocking this direction, the push plate 63 can rotate upward around the axis of the hinge 62 and fold up, thereby avoiding collision damage to the mechanism.

[0045] like Figures 6-10 and Figure 12 As shown, in order to adapt to the independent triggering requirements of the first exchange platform 24 and the second exchange platform 43 respectively, two sets of lifting components 5 are provided and fixed symmetrically on both sides of the inner bottom surface of the outer frame 41. Each set of lifting components 5 works independently, corresponding to the arrival triggering action of one exchange platform, thereby realizing the non-interference cleaning of the two workstations.

[0046] Specifically, the lifting assembly 5 includes a mounting base 51 fixed to the inner bottom surface of the outer frame 41, and a guide plate 52 vertically fixed to the mounting base 51. A guide groove 521 is formed through the surface of the guide plate 52. The track design of the guide groove 521 includes a horizontal guide groove and a smoothly transitioning upward inclined groove. A transmission pin 54 is slidably disposed in the guide groove 521 as the power input end. At the same time, in order to prevent the pin from rotating during sliding and causing the connection to loosen, a limiting groove (not shown in the figure) is also connected to the guide groove 521. The limiting groove is a narrow rectangular groove formed along the track of the guide groove 521. The transmission pin 54 has a flat neck at the corresponding position. The flat neck is inserted into the limiting groove and slides, thereby allowing translation while physically locking the rotational freedom of the pin.

[0047] A support rod 55 is vertically fixed on the transmission pin 54. A support platform 56 is fixedly sleeved on the support rod 55. A rotating seat 57 is installed on the support platform 56. A V-shaped fixed block 58 is rotatably connected to the rotating seat 57 through a torsion spring, giving it the ability to automatically reset. At the same time, a lifting block 59 with a concave structure is movably sleeved on the support rod 55. The lifting block 59 has its own counterweight. Under the action of natural gravity, its bottom surface is always in close contact with one end of the V-shaped fixed block 58. The top of the lifting block 59 is provided with two or more top rods 591, which are directly used to lift the slag scraping execution assembly 7 above.

[0048] To achieve mechanical triggering, a contact protrusion 53 is fixed on the side of the track-changing plate 52 near the top center. The specific operation process is as follows: when the triggering component 6 pushes the transmission pin 54 to slide from the horizontal section into the inclined section along the track-changing slide groove 521, the transmission pin 54 drives the support rod 55, the support platform 56, and the V-shaped fixed block 58 to move upward synchronously. When it moves to the predetermined height, one end of the V-shaped fixed block 58 abuts against the fixed contact protrusion 53. As the transmission pin 54 continues to move upward along the inclined groove, the contact protrusion 53 forces the V-shaped fixed block 58 to overcome the resistance of the torsion spring and rotate around the rotating seat 57. This rotation causes the other end of the V-shaped fixed block 58 to tilt upward, thereby pushing the lifting block 59 upward along the support rod 55, and then lifting the scraper actuator 7 above into the working position.

[0049] Furthermore, in response to the spatial difference in the dual-station layout, the two sets of lifting components 5 in this embodiment are configured differently to adapt to the independent operation of the first switching platform 24 and the second switching platform 43 respectively:

[0050] Since the first exchange platform 24 is slidably mounted on the top surface of the sliding track 42 (i.e., at a high position), while the second exchange platform 43 is slidably mounted on the inner side of the sliding track 42 (i.e., at a low position), there is a hierarchical difference between the two in the vertical direction. Based on this, when the two sets of lifting components 5 are installed, the opening height (or overall installation height) of the track-changing slide 521 of the lifting component 5 adapted to the first exchange platform 24 is higher than that of the set adapted to the second exchange platform 43. This height difference design ensures that no matter which set of components is triggered, its final lifting and scraping execution component 7 corresponds to the cleaning needs of the sword grid 46 at different heights.

[0051] Since the first exchange platform 24 moves on the sliding track 42, when it carries the workpiece into the outer frame 41, the trigger component 6 on its side actually moves along the trajectory of the clearance gap 401 (i.e., hidden deep inside the track). In order to contact the lifting component 5 adapted to the first exchange platform 24, the axial length of its drive pin 54 is designed to be greater than the length of the drive pin 54 adapted to the second exchange platform 43. Through the extended design, the drive pin 54 can traverse the space laterally and extend straight into the clearance gap 401, thereby ensuring that the trigger component 6 moving in the clearance gap 401 can accurately contact and push the drive pin 54, realizing the triggering of the inner low platform without the triggering failure due to the existence of the gap. Here, the drive pin 54 adapted to the lifting component 5 of the first exchange platform 24 is defined as the extension pin 510.

[0052] like Figure 5 and Figures 9-11As shown, in order to achieve automatic cleaning of slag on the surface of the sword grid 46, a slag scraping execution component 7 is provided inside the outer frame 41 and below the sword grid 46. Specifically, the slag scraping execution component 7 includes a fixed frame 71 disposed inside the outer frame 41, and several downward support columns 75 are fixed on both sides of the bottom surface of the fixed frame 71. At the same time, a guide seat 76 adapted to support the support columns 75 is fixed on the bottom surface inside the outer frame 41. The support columns 75 are movably inserted through the guide seat 76. The fixed frame 71 extends along the length of the platform, and several sets of cleaning units 73 are evenly arranged inside the fixed frame 71 to correspond to the arrangement spacing of the sword grid 46. Each set of cleaning units 73 includes two support shafts 731 rotatably disposed on both sides of the inner wall of the fixed frame 71, and cleaning scrapers 732 respectively connected to the support shafts 731.

[0053] To ensure safety in the non-working state, the support shaft 731 and the cleaning scraper 732 are connected by a torsion spring (not shown in the figure). Under the elastic restoring force of the torsion spring, the two opposing cleaning scrapers 732 in the initial state maintain an outward opening posture, thereby avoiding the sword grid 46 in the vertical direction and preventing interference during non-cleaning movement. In addition, in order to receive external driving force, a gear 72 is fixedly sleeved on one end of the support shaft 731.

[0054] Furthermore, to address the issue of waste residue easily adhering to the surface of the cleaning scraper 732 during long-term operation, this embodiment includes T-shaped striking rods 74 obliquely fixed on both sides of the inner wall of the fixed frame 71, located in the gap between two adjacent cleaning scrapers 732. Hard striking balls 741 are fixed to the extended arms at both ends of each striking rod 74. When the cleaning operation ends and the cleaning scraper 732 loses external driving force and returns to its closed state under the restoring force of the torsion spring, the outer wall of the cleaning scraper 732 will momentarily and rigidly impact the stationary striking balls 741. The sudden stop vibration generated by this impact effectively shakes off the waste residue adhering to the surface of the cleaning scraper 732, thereby maintaining the cleanliness of the scraper surface.

[0055] Continue to refer to, for example Figure 5 and Figures 9-11 As shown, in order to drive the cleaning scraper 732 to achieve automatic closing action, opening and closing drive components 8 are respectively provided on the bottom surface of the inner wall baffle 48 of the first exchange platform 24 and the second exchange platform 43. Figure 11 (As shown). In terms of specific structure, the opening and closing drive assembly 8 includes an inverted T-shaped support frame 81, with concave covers 82 fixed at both ends of the support frame 81, and a vertically arranged drive rack 83 embedded inside the concave cover 82. The concave cover 82 has both limiting and guiding functions for the internal mechanism and protection functions.

[0056] The drive rack 83 is positioned to contact and mesh with the gear 72 at the end of the lower support shaft 731. When the entire scraper assembly 7 is lifted upward, the fixed drive rack 83 gradually contacts and meshes with the gear 72 using the meshing transmission characteristics, causing the gear 72 to rotate. This converts the linear motion of the gear 72 as the assembly moves upward into its own rotational motion, which in turn drives the support shaft 731 to rotate. Ultimately, this drives the cleaning scraper 732 connected to the support shaft 731 to overcome the resistance of the torsion spring and close from the outside in, thereby achieving the clamping and cleaning of the blade 46.

[0057] Furthermore, in order to ensure that the cleaning scraper 732 can stably overcome the resistance of its own torsion spring during the closing process and can remain in the closed state in a flexible contact manner, this embodiment is specially equipped with a flexible state holding mechanism at the meshing end of the opening and closing drive assembly 8.

[0058] like Figure 8 As shown, protrusions 84 are fixedly installed on the outer walls of both sides of the concave cover 82. A guide rod 85 is vertically movably inserted through the protrusion 84. An independent movable tooth 87 is movably installed at the top of the drive rack 83. Connecting ears are provided on both sides of the movable tooth 87. The top of the guide rod 85 is fixedly connected to the bottom surface of the connecting ears, thereby forming a linkage assembly between the guide rod 85 and the movable tooth 87. At the same time, a tension spring 86 is sleeved on the outer periphery of the guide rod 85. One end of the tension spring 86 is connected to the protrusion 84, and the other end is connected to the connecting ears on both sides of the movable tooth 87. The tension of the tension spring 86 provides a downward elastic preload to the guide rod 85, thereby elastically suspending the movable tooth 87 above the main body of the drive rack 83, giving it a vertical floating buffer capability.

[0059] Because the cleaning scraper 732 is always inclined to open outwards due to the action of the torsion spring, when the lifting assembly 5 pushes the gear 72 upwards and it meshes with the movable tooth 87, the movable tooth 87 applies a reaction force to the gear 72 through the continuous downward pull of the tension spring 86, forcing the gear 72 to rotate, which in turn drives the support shaft 731 to rotate, causing the cleaning scraper 732 to overcome the strong resistance of its own torsion spring and close from the outside inwards. Furthermore, after the cleaning scraper 732 closes and contacts the surface of the sword grid 46 and enters a closed state, the elastic deformation of the tension spring 86 allows the movable tooth 87 to make a slight vertical floating and retraction. This flexible holding effect ensures that the scraper can fit tightly against the surface of the sword grid 46, avoiding damage to the sword grid 46 due to excessive rigidity and preventing accidental loosening due to the rebound force of the scraper's own torsion spring. This ensures that the scraper always maintains a closed working state with a constant clamping force, effectively guaranteeing the cleaning effect.

[0060] Finally, it should be noted that in order to ensure the safety and non-interference of the dual-station exchange process, this embodiment has strictly limited the length of the overall frame: the overall frame length formed by the bed assembly 2 (i.e., the main frame 21) and the external frame 41 is designed to be greater than the sum of the lengths of the first exchange platform 24 and the second exchange platform 43.

[0061] During the position switching process between the first exchange platform 24 and the second exchange platform 43, they undergo dynamic displacement from complete vertical overlap to complete front-to-back offset. Although no interference occurs at the moment of vertical overlap (i.e., the midpoint of the exchange) due to the hierarchical difference, if the total frame length is insufficient when they move to a specific distance (e.g., offset by half a distance), one platform may still be within the trigger range of the lifting component 5 in the work area, while the other platform happens to have moved into that area, which could easily lead to accidental contact or spatial interference. Therefore, by designing the overall frame length to be greater than the sum of the lengths of the two platforms, sufficient exchange avoidance distance is actually reserved in physical space, ensuring that when one platform is performing lifting and cleaning operations, the other platform can completely move out of the area or remain in a safe waiting position, thereby eliminating the risk of motion interference.

[0062] Working Principle: The operation of this invention begins with the alternating cycle of two workstations. Initially, the first exchange platform 24 and the second exchange platform 43 are located inside the machine tool housing 1 (cutting position) and on the external frame 41 (loading position), respectively. In the cutting position, the feed platform 33 carries the gantry cutting assembly 3, which moves along the longitudinal guide rail (Y-axis). In conjunction with the X-axis moving module 35 and the Z-axis moving module on the gantry beam 31, the laser head assembly 32 is driven to perform three-dimensional precision cutting of the sheet metal. The waste generated during cutting falls into the waste drawer 22 at the bottom. After cutting is completed, the first exchange platform 24 moves out to the external frame 41 via its side sliding component 431 along the top surface of the sliding rail 42 for unloading. Simultaneously, the second exchange platform 43, loaded with the sheet metal to be cut, moves into the machine tool via its sliding component 431 along the inner side of the sliding rail 42. Thanks to the layered rail design and the overall frame length, which is greater than the sum of the lengths of the two platforms, the two platforms achieve seamless staggered switching during movement using the height difference and reserved clearance stroke, without interfering with each other. When the platform moves to the endpoint, its end face flexibly contacts the buffer post 441 on the limiting plate 44 to achieve soft limiting.

[0063] During the platform exchange process, the automatic cleaning structure is triggered synchronously. Taking the first exchange platform 24 moving out to the external frame 41 (i.e., the cleaning station) as an example, the trigger component 6 carried on its side moves with the platform. When the push plate 63 maintains a vertical rigid state under the unidirectional restriction of the limiting member 64 and contacts the lifting component 5 adapted to the platform, the push plate 63 pushes the extension pin 510 to slide from the horizontal section into the inclined section along the variable track slide 521. The transmission pin 54 drives the support rod 55 and the V-shaped fixed block 58 to move upward as a whole until one end of the V-shaped fixed block 58 contacts the fixed contact protrusion 53, forcing the V-shaped fixed block 58 to rotate around the rotating seat 57. Its other end pries the lifting block 59 upward. The lifting block 59 lifts the scraping execution component 7 above as a whole through the top rod 591.

[0064] As the component moves upward, the gear 72 at the end of the support shaft 731 meshes with the drive rack 83 fixed above. Utilizing the transmission characteristics of the gear rack, the gear 72 is forced to rotate, thereby driving the support shaft 731 to rotate against the resistance of the torsion spring. This drives the originally open cleaning scraper 732 to close from the outside to the inside, forming a conical envelope structure that tightly clamps the two side walls of the sword grid 46. Subsequently, as the platform continues to move, the scraper removes the slag adhering to the surface of the sword grid 46.

[0065] To ensure the stability and durability of the cleaning process, if gear 72 and drive rack 83 experience a rigid impact during scraper closing, the movable tooth 87 in the opening and closing drive assembly 8 will be vertically floated and buffered by the extension and retraction of tension spring 86 to prevent jamming. When the cleaning scraper 732 is tightly attached to the sword grid 46, the continuous tension provided by tension spring 86 gives the movable tooth 87 a downward elastic preload, ensuring that the scraper maintains a constant clamping force. This prevents rigid damage to the sword grid 46 and avoids accidental loosening due to the rebound of the scraper torsion spring. When cleaning is finished, the lifting assembly 5 falls back, and gear 72 disengages from drive rack 83.

[0066] At this moment, the cleaning scraper 732, having lost its external driving force, quickly resets and opens under the action of its own torsion spring. In the instant of opening, the outer wall of the scraper collides with the striking ball 741 fixed to the frame. Utilizing the sudden stop vibration generated by the rigid collision, the waste residue adhering to the scraper surface is effectively shaken off to the bottom, thus achieving self-cleaning of the mechanism and preparing for the next operation. When the platform resets back to the machine tool, the push plate 63 of the trigger assembly 6 is subjected to reverse resistance and folds around the hinge 62, avoiding the lifting assembly 5, completing the entire work cycle.

[0067] In summary, this embodiment utilizes the horizontal section of the variable track slide 521 to set a safety buffer stroke, ensuring that the first exchange platform 24 or the second exchange platform 43 is fully in the cleaning station and the blade 46 is aligned with the slag scraping execution component 7. Only after the V-shaped fixed block 58 contacts the contact protrusion 53, the lever flipping action instantly converts the horizontal kinetic energy into a vertical lifting force on the lifting block 59. This prevents mechanical interference and collision caused by premature lifting of the slag scraping execution component 7, and ensures that the gear 72 and the drive rack 83 can mesh at a sufficient depth, thereby realizing the operation mode of cleaning when the platform is in place and resetting when it leaves the position.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A laser feeding machine, characterized in that, include Machine tool housing (1); Bed assembly (2), which is disposed inside the machine tool housing (1); A gantry cutting assembly (3) is mounted on the bed assembly (2); The exchange component (4) is slidably disposed on the bed assembly (2). The exchange component (4) includes an outer frame (41) and a sliding rail (42) fixed on the outer frame (41) and the bed assembly (2). A first exchange platform (24) and a second exchange platform (43) are switched and moved along the sliding rail (42). A plurality of sword rails (46) are arranged in the first exchange platform (24) and the second exchange platform (43). Triggering components (6) are all located on the sides of the first switching platform (24) and the second switching platform (43); The lifting component (5) is symmetrically arranged on the bottom surface inside the outer frame (41) and is adapted to be abutted by the triggered component (6); The slag scraping execution component (7) is disposed inside the outer frame (41) and below the sword guard (46); The opening and closing drive assembly (8) is fixed to the bottom of the first exchange platform (24) and the second exchange platform (43).

2. The laser feeding machine according to claim 1, characterized in that: The sliding track (42) has a clearance gap (401) between it and the inner wall side of the outer frame (41) and the bed assembly (2). The bottom surface of the sliding track (42) is fixed to the outer frame (41) and the bed assembly (2) by a base. The first exchange platform (24) is slidably disposed on the top surface of the sliding track (42) by a sliding component (431) fixed on its side. The second exchange platform (43) is slidably disposed on the inner side of the sliding track (42) by a sliding component (431) fixed on its side, thereby forming a switching gap between the first exchange platform (24) located above and the second exchange platform (43) located below. The sliding component (431) includes a mounting box fixed on the side of the corresponding exchange platform and a traveling roller driven by a motor and rotatably disposed in the mounting box.

3. The laser feeding machine according to claim 2, characterized in that: The lifting assembly (5) includes a mounting base (51) fixed to the bottom surface of the outer frame (41) and a track-changing plate (52) fixed on the mounting base (51). The track-changing plate (52) has a track-changing groove (521) formed by a horizontal groove and an inclined groove. A transmission pin (54) suitable for being pushed by the trigger assembly (6) is slidably arranged in the track-changing groove (521). The transmission pin (54) has a flat neck on its position surface in the track-changing groove (521). A limiting groove suitable for limiting the rotation of the transmission pin (54) and adapted to the flat neck is connected on the track-changing groove (521).

4. A laser feeding machine according to claim 3, characterized in that: The lifting assembly (5) further includes a support rod (55), a support platform (56), a rotating seat (57), a V-shaped fixed block (58), a lifting block (59), and a contact protrusion (53). The support rod (55) is vertically fixed on the transmission pin (54). The support platform (56) is fixedly sleeved on the support rod (55). The rotating seat (57) is disposed on the support platform (56). The V-shaped fixed block (58) is rotatably connected to the rotating seat (57) by a torsion spring. The lifting block (59) is concavely movably sleeved on the support rod (55). The lifting block (59) is located at... Above the support platform (56), its bottom surface is always in contact with one end of the V-shaped fixed block (58). The contact protrusion (53) is fixed at the center of the side of the variable track plate (52) near the top. It is suitable for contacting one end of the V-shaped fixed block (58) when the transmission pin (54) slides to the inclined high position of the variable track groove (521), forcing the V-shaped fixed block (58) to rotate around the rotating seat (57), so that the other end of the V-shaped fixed block (58) pushes the lifting block (59) to move upward along the support rod (55). The lifting block (59) is provided with a top rod (591) for lifting the slag scraping execution assembly (7).

5. A laser feeding machine according to claim 4, characterized in that: The lifting assembly (5) includes two sets, which are symmetrically fixed on both sides of the bottom surface of the outer frame (41) corresponding to the first exchange platform (24) and the second exchange platform (43), respectively. The setting height of the track-changing slide (521) of the lifting assembly (5) adapted to the first exchange platform (24) is higher than the setting height of the track-changing slide (521) of the lifting assembly (5) adapted to the second exchange platform (43). The first exchange platform (24) is suitable to move into the outer frame (41), and its corresponding trigger assembly (6) moves along the clearance gap (401). The length of the transmission pin (54) of the lifting assembly (5) adapted to the first exchange platform (24) is greater than the length of the transmission pin (54) of the lifting assembly (5) adapted to the second exchange platform (43), so that the transmission pin (54) can extend into the clearance gap (401) and contact the corresponding trigger assembly (6).

6. A laser feeding machine according to claim 1, characterized in that: The triggering component (6) includes a fixed platform (61), a hinge (62), a push plate (63), and a limiting member (64). The fixed platform (61) is fixed to the side of the first exchange platform (24) and the second exchange platform (43). The hinge (62) is fixed to the bottom surface of the fixed platform (61). The push plate (63) is movably connected to the hinge (62). The limiting member (64) is fixed to the bottom surface of the fixed platform (61) and located on one side of the push plate (63). The push plate (63) is used to limit the unidirectional rotation of the push plate (63). The push plate (63) is adapted to remain vertical under its own weight and the resistance of the limiting member (64) to push the lifting assembly (5) when the first exchange platform (24) or the second exchange platform (43) moves to the outer frame (41). It is also adapted to rotate and fold around the axis of the hinge member (62) when the first exchange platform (24) or the second exchange platform (43) is reset to the bed assembly (2).

7. A laser feeding machine according to claim 2, characterized in that: The scraping execution assembly (7) includes a fixed frame (71) disposed inside the outer frame (41) and a plurality of cleaning units (73) disposed along the length of the fixed frame (71). Each set of cleaning units (73) includes two support shafts (731) rotatably disposed on both sides of the inner wall of the fixed frame (71) and a cleaning scraper (732) connected to the support shaft (731) by a torsion spring. In the initial state, the two opposing cleaning scrapers (732) are opened outward. A gear (72) is fixedly sleeved on one end of the support shaft (731).

8. A laser feeding machine according to claim 7, characterized in that: The inner walls of the first exchange platform (24) and the second exchange platform (43) are fixed with baffles (48). The opening and closing drive assembly (8) is fixed to the bottom surface of the baffle (48). The opening and closing drive assembly (8) includes a support frame (81), a concave cover (82) and a drive rack (83). The support frame (81) is fixed to the bottom surface of the baffle (48) in an inverted T shape. The concave cover (82) is fixed to both ends of the support frame (81). The drive rack (83) is fixed inside the concave cover (82). The gear (72) is adapted to mesh with the drive rack (83) when it is lifted and moved upward by the lifting assembly (5), thereby driving the support shaft (731) to rotate, so that the cleaning scraper (732) closes inward to form a conical structure to scrape the two sides of the sword grid (46).

9. A laser feeding machine according to claim 8, characterized in that: The opening and closing drive assembly (8) further includes a boss (84), a guide rod (85), a tension spring (86), and a movable tooth (87). The boss (84) is fixed on both sides of the concave cover (82). The guide rod (85) moves vertically through the boss (84), and the tension spring (86) is sleeved on the guide rod (85). The movable tooth (87) is movably inserted into the top of the drive rack (83), and one end of each of the two guide rods (85) is connected to the connecting ears on both sides of the movable tooth (87). The movable tooth (87) is adapted to provide flexible buffering through the elastic action of the tension spring (86) to maintain the meshing state during the meshing process of the gear (72) and the drive rack (83).

10. A laser feeding machine according to claim 2, characterized in that: It also includes a limiting plate (44) and a buffer column (441). The limiting plate (44) is fixed to one end of the outer frame (41), and the buffer column (441) is fixed to the inner side of the limiting plate (44). The end face of the buffer column (441) is made of flexible material, which is suitable for contacting the first exchange platform (24) or the second exchange platform (43) that has moved to the outer frame (41) for buffering and limiting. Both sides of the inner wall of the first exchange platform (24) and the second exchange platform (43) are fixed with toothed plates (45). Several slots are opened on the toothed plates (45) along the straight direction. The two ends of the sword guard (46) are respectively inserted into the slots at intervals.

Images