Galvanized plate plasma arc cutting mechanism

Abstract

The invention discloses a galvanized sheet plasma arc cutting mechanism, and relates to the technical field of plasma cutting. The galvanized sheet plasma arc cutting mechanism comprises a cutting platform, Y-axis guide rails are arranged on the two sides of the cutting platform, downward pressing bosses parallel to the Y-axis guide rails are arranged below sliding tables of the Y-axis guide rails, split type grid plates are arranged in the cutting platform, every two split type grid plates form a group, and a driving assembly is arranged below running rails of the Y-axis guide rails. The driving displacement of the Y-axis guide rail is used as a driving source, the pressing boss is driven to apply drive to the split type driving assemblies one by one, the grid plates corresponding to the lower portions of the cutting guns are driven to move in a reciprocating mode, synchronous friction cleaning and deslagging are conducted on the burrs adhered to the cutting seams after cutting, and the burrs are removed while the grid plates corresponding to the lower portions of the cutting guns move in a reciprocating mode. Water flow in the water tank is driven to fluctuate in a reciprocating mode, the contact area of the water flow and air is increased, and synchronous water cooling can be conducted on the high temperature of a cutting seam while the water flow is fully combined with cutting smoke for sedimentation.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma cutting, and specifically provides a plasma arc cutting mechanism for galvanized sheets. Background Art

[0002] Plasma arc cutting excites gas ionization through a high-frequency oscillator to form a high-temperature and high-speed plasma arc. Under the action of the compression effect (mechanical compression) and the magnetic constriction effect, the energy is highly concentrated, generating a high temperature (about 2700 - 30000 °C) to locally melt the metal. At the same time, a high-speed gas flow (speed 300 - 1000 m / s) blows the molten metal away to form a narrow cut. It is widely used in the cutting processes of metals such as galvanized sheets, cast iron, and tungsten.

[0003] For example, the Chinese patent with the publication number CN119747815A discloses a numerical control plasma cutting machine and its usage method. When such a device performs the cutting process, it uses the cutting frame as its cutting platform. Since the particles after cutting are heavier than the gas, they will fall into the sterilizing water inside the filter box and precipitate when turning inside the filter box, reducing the harm and pollution caused by the smoke and dust generated by the cutting machine. And through the activated carbon filter plate, the smoke and dust can be filtered secondarily, improving the filtering effect of the cutting machine on the smoke and dust.

[0004] Another example is the Chinese patent with the publication number CN119681397A, which discloses a plasma metal cutting device and a cutting method. When such a device performs the cutting process, it uses a feeding mechanism to push the lowermost metal plate in the metal plate stack towards the plasma cutting machine, so that the metal plate can be automatically pushed onto the cutting platform of the plasma cutting machine for cutting and processing work, without the need to lift the heavy metal plate for cutting, saving a lot of energy of the staff and making its operation more convenient.

[0005] However, when the existing plasma arc cutting equipment performs the cutting process on metal plates, due to reasons such as improper cutting speed (too fast, the torch arc lags, resulting in rapid slag residue; too slow, the torch arc forms multi-bubble metal deposits at the bottom of the cutting gap), abnormal oxygen supply and gas parameters, wear or deformation of key equipment such as nozzles, and material properties and thickness, the cut seam after cutting often has slag at the bottom. The slag adheres firmly to the cut seam as the temperature decreases, resulting in burrs on the cut plate, and subsequent grinding of the burrs is extremely time-consuming and laborious. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a plasma arc cutting mechanism for galvanized sheets, which solves the problems raised in the background art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a galvanized sheet plasma arc cutting mechanism, comprising: a cutting platform; a Y-axis guide rail, wherein the Y-axis guide rail is provided in two groups, respectively arranged on both sides of the cutting platform, and a downward pressure boss parallel to the Y-axis guide rail is provided below the slide table; a grid plate, wherein the grid plate is arranged inside the cutting platform along the running track of the Y-axis guide rail, and the grid plates are arranged in a split type in groups of two; a driving component, wherein the driving component is arranged below the running track of the Y-axis guide rail, and when the Y-axis guide rail drives the cutting gun to move to cut the galvanized sheet, the downward pressure boss is driven to press against the driving component, thereby forming a driving force that drives the grid plate below the cutting gun to move back and forth, so that the grid plate rubs back and forth relative to the galvanized sheet, and rubs back and forth to remove slag on the cut weld.

[0008] Furthermore, it also includes: a water tank, which is opened inside the cutting platform; a one-way guide port, which is opened at the bottom of the grid plate and immersed in the water tank, and one side of the two groups of one-way guide ports are respectively provided with a one-way cover plate that rotates relatively; a fourth drive shaft, which is arranged between two adjacent groups of grid plates, and the fourth drive shaft is provided with a water-diverting flap along its axial direction that is staggered with the one-way cover plate and immersed in the water tank.

[0009] Furthermore, the plate surface of the one-way cover plate is larger than the opening of the one-way air guide port, and a hinge is provided on the top of the one-way cover plate to enable the one-way cover plate to be opened and closed along the one-way air guide port.

[0010] Furthermore, it also includes: an X-axis guide rail, which is arranged above the slide table of the Y-axis guide rail; an electric push rod, which is arranged on the Y-axis guide rail, and a support frame is provided at the telescopic end of the electric push rod, and the side edges of the support frame are respectively provided with a first pressure roller and a second pressure roller facing the two sides of the cutting gun.

[0011] Furthermore, the driving assembly includes: a reciprocating slide, which is flush with the grid plate and is arranged on the cutting platform, a support seat fixedly connected to the grid plate is provided on one side of the reciprocating slide, and a reciprocating driving structure for driving the grid plate to move is provided on the other side of the reciprocating slide, and the reciprocating driving structure is in a split type and installed on the driving shell; a pressure seat, which is arranged on the reciprocating slide, a pressure rod is provided on one side of the pressure seat, a pressure concave platform that is in pressure contact with the downward pressure boss is provided on the top end of the pressure rod, a reciprocating rack that meshes with the reciprocating driving structure is provided on the bottom end of the pressure rod, and a compression spring is provided on the pressure rod to provide displacement reset for the pressure concave platform.

[0012] Furthermore, the driving component also includes: a rack, which is provided in two groups and is arranged on the displacement track of the support seat in a gear-pressure inverted form; a passive gear, which is provided at both ends of the fourth driving shaft, and the passive gear is built into the support seat and meshed with the rack.

[0013] Further, the reciprocating drive structure includes a second drive shaft and a third drive shaft horizontally and oppositely arranged on the drive housing near the grid plate. Among them, drive gears one and two that mesh with each other are respectively provided in the middle parts of the axial directions of the second drive shaft and the third drive shaft, forming the forward and reverse rotation states of the second drive shaft and the third drive shaft. One ends of the second drive shaft and the third drive shaft are respectively provided with reciprocating gears one and two with staggered tooth arrangements, so that the reciprocating gears one and two mesh with the reciprocating rack alternately during forward and reverse rotation and after being pressed down, pushing the reciprocating rack to reciprocate and forming a driving force for driving the grid plate to reciprocally rub and remove slag relative to the galvanized plate.

[0014] Further, two adjacent sets of pressure-bearing concave platforms are arranged in a staggered manner, and the pressing convex platform is provided in two sets, which are respectively pressed and combined with the adjacent pressure-bearing concave platforms in a staggered manner.

[0015] Further, it further includes: an overflow trough, which is arranged on both sides of the trough body of the water trough to collect the overflow water driven by the grid plate in the water trough; a telescopic cover, which is of a bellows structure, and the telescopic cover is arranged between adjacent reciprocating sliding tables along the trough body direction of the overflow trough, and the telescopic cover expands and contracts with the reciprocating sliding table, always blocking the overflow water in the overflow trough.

[0016] Further, it further includes a first fixed seat arranged on the reciprocating sliding table and a second fixed seat arranged on the drive housing. A reset pull rod that telescopically slides along the second fixed seat is arranged on one side of the first fixed seat, and a reset spring that applies elastic telescopic reset to the reset pull rod is arranged on the reset pull rod, so that after the driving force for the reciprocating displacement of the reciprocating sliding table disappears, it drives the grid plate to displace and reset.

[0017] The present invention has the following beneficial effects: (1) For the plasma arc cutting mechanism of the galvanized plate, by using the driving displacement of the Y-axis guide rail as the driving source, on the one hand, it drives the cutting gun to displace for the cutting process of the galvanized plate, and on the other hand, it individually applies driving force to the split driving components to drive the grid plate below the corresponding cutting gun to reciprocate, synchronously friction-cleaning and removing slag from the burrs adhered to the cutting seam after cutting. And while the grid plate below the corresponding cutting gun reciprocates, it drives the water flow in the water trough to reciprocate and fluctuate, increasing the contact area between the water flow and the air, fully combining with the cutting fumes to settle, and at the same time, it can synchronously cool down the high temperature of the cutting seam by water cooling.

[0018] (2) The plasma arc cutting mechanism for galvanized sheets, through the split - type setting of the driving component, keeps the driving in no - load state when not working. Only when the Y - axis guide rail drives the cutting gun to displace and cut above the corresponding driving component, the driving is applied to it one by one, causing the grid plate directly below the cutting gun to reciprocate, and synchronously friction - cleaning and removing slag from the burrs adhered to the cutting seam after being cut by the cutting gun. It has excellent transmission performance, can clean and remove slag from the burrs of the cutting seam before they cool and solidify, and also has precise transmission control performance, and can always maintain the impurity - removing process for the burrs of the cutting seam.

[0019] (3) The plasma arc cutting mechanism for galvanized sheets, by controlling the reciprocating displacement of the grid plate directly below the cutting gun, on the one hand, simultaneously performs synchronous friction - cleaning and removing slag on the burrs adhered to the cutting seam of the galvanized sheet, and on the other hand, the reciprocating movement of the grid plate can drive the water in the water tank to fluctuate dynamically, deflect the water flow towards the galvanized sheet, cool down the cutting seam, and at the same time cool and solidify the burrs of the cutting seam by water cooling. After the grid plate friction - cleans, the burrs fall off into the water tank, and the fluctuation of the water flow can also increase the contact area with the air, actively combine with the flue gas generated by cutting and settle, reducing the diffusion of the flue gas.

[0020] (4) The plasma arc cutting mechanism for galvanized sheets, through the setting of two groups of pressure rollers on both sides of the cutting gun, on the one hand, can horizontally press the galvanized sheet during cutting, avoiding the situation that the galvanized sheet during cutting warps due to stress and other reasons and impacts the cutting gun head. On the other hand, it can tightly press the galvanized sheet at the position where the grid plate reciprocates to clean and remove slag, forming a counter - pressure state with the grid plate, so that the reciprocating displacement friction of the grid plate can perform a flat - pushing type slag removal on the burrs of the cutting seam, avoiding the warping of the galvanized sheet material.

[0021] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above - mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an assembly schematic diagram of two groups of pressure rollers in the present invention; Figure 3 is an assembly schematic diagram of the lower pressing boss in the present invention; Figure 4 is a transmission schematic diagram of two groups of pressure rollers in the present invention; Figure 5 is a first - driving schematic diagram of the grid plate in the present invention; Figure 6 is a second - driving schematic diagram of the grid plate in the present invention; Figure 7 is a third - driving schematic diagram of the grid plate in the present invention; Figure 8Schematic diagram of the force transmission of the reciprocating slide in the present invention; Figure 9 First schematic diagram of the driving component in the present invention; Figure 10 Second schematic diagram of the driving component in the present invention; Figure 11 Planar schematic diagram of the driving component in the present invention; Figure 12 Schematic diagram of the force on the pressing boss and the bearing concave platform in the present invention; Figure 13 Assembly schematic diagram of the grid plate, the one-way cover plate and the water deflecting flap in the present invention; Figure 14 Planar assembly drawing of the grid plate, the one-way cover plate and the water deflecting flap in the present invention; Figure 15 Exploded view of the grid plate, the one-way cover plate and the water deflecting flap in the present invention; Figure 16 Schematic diagram of the transmission of the water deflecting flap in the present invention.

[0023] In the figure, 1. Cutting platform; 2. Driving housing; 3. Grid plate; 4. Driving motor; 5. First driving shaft; 6. Driving worm; 7. Driving worm gear; 8. Y-axis guide rail; 9. X-axis guide rail; 10. Z-axis guide rail; 11. Plasma cutting gun; 12. First pressing roller; 13. Second pressing roller; 14. Support frame; 15. Electric push rod; 16. Pressing boss; 17. Bearing concave platform; 18. Water tank; 19. Overflow tank; 20. One-way diversion port; 21. Support seat; 22. Reciprocating slide; 23. Telescopic cover; 24. Hinge; 25. One-way cover plate; 26. Guide slide; 27. Guide slide rail; 28. Bearing seat; 29. Reciprocating rack; 30. First reciprocating gear; 31. Second reciprocating gear; 32. Pull rod reset structure; 321. First fixed seat; 322. Second fixed seat; 323. Reset pull rod; 324. Reset spring; 33. Pressure rod; 34. Compression spring; 35. Second driving shaft; 36. Third driving shaft; 37. First driving gear; 38. Second driving gear; 39. Fourth driving shaft; 40. Water deflecting flap; 41. Driven gear; 42. Rack. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred components or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] Please refer to Figures 1 - 16 , an embodiment of the present invention provides a technical solution: a plasma arc cutting mechanism for galvanized sheets.

[0027] Please refer to Figures 1 - 3 , a plasma arc cutting mechanism for galvanized sheets, including a cutting platform 1. Inside the cutting platform 1, there are grid plates 3 arranged in a split manner in pairs. On both sides above the cutting platform 1, there are Y-axis guide rails 8. On the slide table of the Y-axis guide rail 8, there is an X-axis guide rail 9. On the slide table of the X-axis guide rail 9, there is a Z-axis guide rail 10. On the slide table of the Z-axis guide rail 10, there is a plasma cutting gun 11. When performing the cutting process on the galvanized sheet, the galvanized sheet to be cut is placed flat on the grid plate 3, and then, based on the horizontal drive of the Y-axis guide rail 8, the left-right drive of the X-axis guide rail 9, and the lifting drive of the Z-axis guide rail 10, the plasma cutting gun 11 is driven to move down to a suitable height of the galvanized sheet, and the plasma cutting gun 11 is driven to translate along the surface of the galvanized sheet to perform the plasma cutting process.

[0028] In addition, a downward pressing boss 16 parallel to the same is provided below the slide table of the Y-axis guide rail 8, and a driving assembly is provided below the traveling track of the Y-axis guide rail 8. When the Y-axis guide rail 8 drives the displacement of the plasma cutting torch 11 to cut the galvanized sheet, it drives the downward pressing boss 16 to press against the driving assembly, forming a driving force for the reciprocating displacement of the grid plate 3 below the plasma cutting torch 11, causing the grid plate 3 to reciprocate horizontally relative to the galvanized sheet for frictional slag removal of its cutting weld. When the plasma cutting torch 11 is used to perform the cutting process on the galvanized sheet and the plasma cutting torch 11 moves horizontally along with the Y-axis guide rail 8 for cutting, the downward pressing boss 16 below the Y-axis guide rail 8 synchronously slides into the corresponding driving assembly, driving the grid plate 3 at the lower part of the plasma cutting torch 11 to reciprocate horizontally for frictional cleaning and slag removal of the burrs adhered to its cutting seam. As the horizontal cutting path of the plasma cutting torch 11 extends, the horizontal cutting path of the plasma cutting torch 11 changes. At this time, the operating state of the grid plate 3 corresponding to the plasma cutting torch 11 can change synchronously, always maintaining reciprocating displacement drive along with the horizontal displacement of the plasma cutting torch 11 for precise frictional cleaning and slag removal of the burrs adhered to its horizontal cutting seam. And when the plasma cutting torch 11 moves left and right along with the X-axis guide rail 9 for cutting, since the grid plate 3 penetrates the entire plate surface of the galvanized sheet, the horizontal reciprocation of the grid plate 3 can always perform frictional cleaning and slag removal on the entire plate surface of the galvanized sheet. Therefore, only by controlling the horizontal reciprocation of the grid plate 3 can the slag removal process for the burrs on the left and right cutting seams of the galvanized sheet be realized. The Z-axis guide rail 10 used to drive the lifting displacement of the plasma cutting torch 11 is used for adjusting and controlling the cutting distance between the plasma cutting torch 11 and the galvanized sheet and does not participate in the adjustment work of the cutting seam path. Therefore, there is no need to consider its displacement state.

[0029] Please refer to Figures 5 - 12, to achieve slag removal from the cutting seam of galvanized sheets by the reciprocating displacement of the grid plate 3, the driving assembly includes a reciprocating slide 22 with the flush grid plate 3 disposed on the cutting platform 1. A support seat 21 fixedly connected to the grid plate 3 is provided on one side of the reciprocating slide 22. A reciprocating driving structure for driving the displacement of the grid plate 3 is provided on the other side of the reciprocating slide 22. The reciprocating driving structure is assembled in a split manner on the driving shell 2, and a bearing seat 28 is provided on the reciprocating slide 22. A pressure rod 33 is provided on one side of the bearing seat 28. A bearing concave platform 17 in pressure contact with the downward pressing convex platform 16 is provided at the top of the pressure rod 33. A reciprocating rack 29 meshing with the reciprocating driving structure is provided at the bottom of the pressure rod 33. A compression spring 34 for providing displacement reset for the bearing concave platform 17 is provided on the pressure rod 33. During the cutting process of the galvanized sheet, the Y-axis guide rail 8 drives the plasma cutting gun 11 to move horizontally along the galvanized sheet, and in combination with the X-axis guide rail 9, drives the plasma cutting gun 11 to move left and right along the galvanized sheet to perform the cutting process on the galvanized sheet. While the Y-axis guide rail 8 is driving, it drives the downward pressing convex platform 16 to displace synchronously with the plasma cutting gun 11, so that the downward pressing convex platform 16 presses against the bearing concave platform 17 one by one and slides relatively with the bearing concave platform 17. When the downward pressing convex platform 16 slides into the interior of the bearing concave platform 17, a downward pressure is applied to the bearing concave platform 17, driving the reciprocating rack 29 to press downward through the pressure rod 33 and meshing with the corresponding reciprocating driving structure (the reciprocating driving structure and the grid plate 3 are set in a split manner and correspond to each other one by one. When the downward pressing convex platform 16 is pressed into the interior of the bearing concave platform 17 one by one, the corresponding reciprocating driving structure forms a driving state, driving the corresponding grid plate 3 to reciprocate. When the downward pressing convex platform 16 slides out of the current bearing concave platform 17, the driving force of the current reciprocating driving structure disappears, and the grid plate 3 stops reciprocating. At this time, the downward pressing convex platform 16 slides into the next set of bearing concave platforms 17, forming a reciprocating driving force for the next set of reciprocating driving structures to drive the next set of grid plates 3, so that each grid plate 3 always reciprocates synchronously with the horizontal displacement of the plasma cutting gun 11), generating a reciprocating driving thrust on the reciprocating rack 29. Then, since the reciprocating rack 29 is integrally assembled with the reciprocating slide 22 through the bearing seat 28, the reciprocating thrust is transmitted to the grid plate 3 through the reciprocating slide 22, driving the grid plate 3 corresponding to the plasma cutting gun 11 to reciprocate. By using the reciprocating displacement of the grid plate 3, relative friction occurs with the sheets on both sides of the cutting seam of the galvanized plate, and the burrs generated by high-temperature cutting of the cutting seam are removed by friction. And when the Y-axis guide rail 8 drives the ion cutting gun 11 to continue to advance for cutting subsequently (since the grid plate 3 penetrates the entire plate surface of the galvanized sheet, when the X-axis guide rail 9 drives the ion cutting gun 11 to move left and right for cutting, when the lower grid plate 3 reciprocates horizontally, the burrs of the left and right cuts can be synchronously cleaned by friction), the bearing concave platform 17 slides out of the corresponding downward pressing convex platform 16 and slides into the next set of downward pressing convex platforms 16, applying a reciprocating driving force to the next set of grid plates 3. And when the downward pressing force of the current downward pressing convex platform 16 disappears, by the top support reset of the compression spring 34, the reciprocating rack 29 moves upward to reset.Disengage the meshing drive state with the reciprocating drive structure to stop the current grid plate 3. Specifically: The reciprocating drive structure includes a second drive shaft 35 and a third drive shaft 36 that are horizontally and oppositely arranged on the drive housing 2 near the grid plate 3. Among them, drive gears one 37 and drive gears two 38 that mesh with each other are respectively provided in the axial middle parts of the second drive shaft 35 and the third drive shaft 36, forming the forward and reverse rotation states of the second drive shaft 35 and the third drive shaft 36. One ends of the second drive shaft 35 and the third drive shaft 36 are respectively provided with reciprocating gears one 30 and reciprocating gears two 31 with staggered tooth arrangements. And, a transmission worm wheel 7 is provided at the other end of the second drive shaft 35, and a combination of a drive motor 4 and a first drive shaft 5 is provided on one side of the drive housing 2. The first drive shaft 5 is provided with a transmission worm 6 that meshes with and drives the transmission worm wheel 7 along its axial direction. While performing plasma cutting on the galvanized sheet, the drive motor 4 is controlled to drive the first drive shaft 5 to rotate, and then drive the combination of the transmission worm 6 and the transmission worm wheel 7 to drive, pushing the second drive shaft 35 to rotate. During the rotation of the second drive shaft 35, by using the transmission combination of the drive gears one 37 and the drive gears two 38, the forward and reverse rotation states of the second drive shaft 35 and the third drive shaft 36 are formed, so that the reciprocating gears one 30 and the reciprocating gears two 31 on the second drive shaft 35 and the third drive shaft 36 rotate relative to each other. When the reciprocating rack 29 is pressed downward against the reciprocating gears one 30 and the reciprocating gears two 31, by using the staggered meshing of the reciprocating gears one 30 and the reciprocating gears two 31 with the reciprocating rack 29 in turn, a reciprocating tooth meshing thrust on the reciprocating rack 29 is generated, and the reciprocating thrust is transmitted to the grid plate 3, forming a driving force for driving the grid plate 3 to reciprocally rub and remove slag relative to the galvanized sheet.

[0030] It should be noted that the transmission combination of the drive motor 4 and the first drive shaft 5, while driving all the reciprocating gears one 30 and the reciprocating gears two 31 to rotate relative to each other, the reciprocating driving force formed by it will only start when the pressure-bearing concave platform 17 and the downward pressure convex platform 16 are in pressure contact, forming a local linkage parallel state of the plasma cutting gun 11 and the grid plate 3 below it, so that the linkage state is always maintained at the cutting part of the galvanized sheet. The grid plate 3 below the galvanized sheet in other parts that have been cut and removed slag or have not been cut will not have reciprocating displacement, and only plays the role of supporting the galvanized sheet, keeping the reciprocating drive structure in other parts in an unloaded operation state, saving the operation cost brought by unnecessary load operation.

[0031] In addition, two adjacent pressure-bearing concave platforms 17 are arranged in a staggered manner, and the downward pressure convex platform 16 is set to two groups, which are respectively pressed and combined with the adjacent pressure-bearing concave platforms 17 in a staggered manner. By setting the pressure-bearing concave platforms 17 to be staggered from each other, the reciprocating racks 29 below the pressure-bearing concave platforms 17 are staggered from each other, saving the displacement space required for the reciprocation of the adjacent reciprocating racks 29 and improving the structural compactness.

[0032] Moreover, a first fixed seat 321 is provided on the reciprocating slide table 22, a second fixed seat 322 is provided on the driving housing 2, a reset pull rod 323 that telescopically slides along the second fixed seat 322 is provided on one side of the first fixed seat 321, and a reset spring 324 that applies elastic telescopic reset to the reset pull rod 323 is provided on the reset pull rod 323. By using the pull rod reset structure 32 composed of the first fixed seat 321, the second fixed seat 322, the reset pull rod 323, and the reset spring 324, when the reciprocating slide table 22 is subjected to a reciprocating displacement under force, it reciprocates by overcoming the elastic tension of the reset spring 324 in the pull rod reset structure 32. After the force on the reciprocating slide table 22 is released, the reciprocating slide table 22 can be driven to reset by the pulling reset of the pull rod reset structure 32, so that the grating plate 3 after reciprocating friction displacement is reset, maintaining the initial position to support the galvanized sheet, and the pressure-bearing concave platform 17 is displaced and reset to maintain continuous pressure contact with the downward pressing convex platform 16 in the subsequent process.

[0033] Please refer to Figures 5 - 7 、 Figures 13 - 16, to achieve the dust removal of the cutting flue gas and the cooling of the cutting seam, a water tank 18 is provided inside the cutting platform 1. A one-way diversion port 20 is provided at the bottom of the grid plate 3 and is immersed in the water tank 18. One-way cover plates 25 that rotate relative to each other are provided on one side of the two groups of one-way diversion ports 20, and the plate surface of the one-way cover plate 25 is larger than the opening of the one-way diversion port 20. A hinge 24 for opening and closing and flipping the one-way cover plate 25 along the one-way diversion port 20 is provided at the top of the one-way cover plate 25. During the daily cutting of the plasma arc cutting equipment, usually clean water is injected into its water tank 18 to serve as the cooling medium for the tail flame of the plasma cutting gun 11 and simultaneously as the adsorption and dust removal medium for the cutting flue gas. By injecting clean water that submerges the one-way diversion port 20 into the water tank 18 of this equipment, when the grid plate 3 reciprocates to remove slag, it drives the water flow in the water tank 18 to reciprocate and fluctuate, so as to increase the contact area between the water flow and the air, enlarge the contact range with the cutting flue gas, and improve the combined sedimentation efficiency of the cutting flue gas. And while the grid plate 3 reciprocates, when the grid plate 3 moves forward, for the grid plate 3 near the forward displacement direction, the water flow at the one-way diversion port 20 at its bottom pushes open the one-way cover plate 25 at the one-way diversion port 20 under the passive impact of the water flow, so that the water flow passes through the one-way diversion port 20 and converges between two adjacent grid plates 3. And the one-way cover plate 25 at the one-way diversion port 20 at the bottom of the other group of grid plates 3 exerts pressure on the one-way diversion port 20 under the impact of the passive water flow and clings to the one-way diversion port 20, forming a state of draining on one side and blocking on the other side. On the one hand, it reduces the relative resistance generated by the displacement of the grid plate 3 and the water flow, and on the other hand, it can converge the water flow between two opposite grid plates 3 and, under the push of the grid plate 3, generate a larger dynamic wave to fully combine with the cutting flue gas. Similarly, when the grid plate 3 moves backward, the one-way cover plate 25 at the one-way diversion port 20 near the backward displacement side is pushed open by the water flow, and the one-way cover plate 25 of the other group closes under the impact of the water flow, and the water flow is converged between two adjacent grid plates 3 again, forming a form of reciprocally pushing the water flow to dynamically fluctuate, so that while the grid plate 3 removes the slag from the burr of the cutting seam, it also has the function of pushing the water flow to dynamically fluctuate for dust removal.

[0034] As a further solution of the present embodiment, a rack 42 in the form of an inverted tooth pressure is provided on the displacement track of the support seat 21, a fourth driving shaft 39 is provided between two adjacent groups of grating plates 3, and a water-diverting flap 40 is provided along the axial direction of the fourth driving shaft 39, which is staggered from the one-way cover plate 25 and immersed in the water tank 18. Both ends of the fourth driving shaft 39 are provided with a passive gear 41 with a built-in support seat 21 and meshing with the rack 42. When the grating plate 3 drives the support seat 21 to reciprocate and move, it drives the passive gear 41 to rotate along the meshing rack 42, generating a passive thrust, driving the fourth driving shaft 39 to rotate with the displacement of the grating plate 3, causing the water-diverting flap 40 on the fourth driving shaft 39 to rotate, and flipping and stirring the dynamic water flow between the two adjacent groups of grating plates 3 again, on the one hand, making the dynamic fluctuation of the water flow more intense, and more fully combining and settling with the cutting smoke, and on the other hand, making the water flow diverted to the cutting seam, The cutting seam and the burrs at the cutting seam are cooled and lowered, which is convenient for the subsequent cutting of the plate material, and can also make the burrs at the cutting seam change from liquid to solid, so as to avoid the burrs not being completely cooled and solidified and adhering to the grid plate 3 when the grid plate 3 is rubbed and cleaned. The cutting burrs and impurities in the flue gas eventually sink to the bottom of the water under the action of gravity. By setting the teeth of the rack 42 to be inverted and the transmission of the rack 42 and the passive gear 41 to be built in the support seat 21, it is possible to effectively prevent impurities in the water flow from gathering on the rack 42 and the passive gear 41, so that the two maintain continuous meshing transmission characteristics.

[0035] Furthermore, overflow grooves 19 are provided on both sides of the trough body of the water trough 18, and a telescopic cover 23 with an accordion cover structure is provided in the trough direction of the overflow groove 19, and the telescopic cover 23 is arranged between adjacent reciprocating slides 22. When the grating plate 3 reciprocates to drive the dynamic fluctuation of the water flow in the water trough 18, the overflow water flow caused by the dynamic fluctuation can be gathered and collected by utilizing the setting of the overflow groove 19 to avoid splashing of water flow. Moreover, when the reciprocating slide 22 drives the grating plate 3 to reciprocate, it drives the telescopic cover 23 to retract synchronously, so that the space required for the displacement of the reciprocating slide 22 can always be closed to maintain the closed overflow water collection characteristics of the overflow groove 19.

[0036] In addition, a guide rail 27 is provided on the inner wall of the overflow trough 19, and a guide slide 26 supporting the reciprocating slide 22 and the support seat 21 is provided on the guide rail 27. The sliding combination of the guide slide 26 and the guide rail 27 is utilized to improve the linkage displacement stability of the reciprocating slide 22 and the support seat 21.

[0037] See also Figures 1 - 4, to achieve the stability during the plasma cutting of galvanized sheets, an electric push rod 15 is provided on the X-axis guide rail 9. The telescopic end of the electric push rod 15 is provided with a support frame 14. On the sides of the support frame 14, a first pressure roller 12 and a second pressure roller 13 are respectively provided opposite to both sides of the cutting torch. When using the plasma cutting torch 11 to cut the galvanized sheet, control the telescopic braking of the electric push rod 15, so that the combination of the first pressure roller 12 and the second pressure roller 13 takes the plasma cutting torch 11 as the center and presses down on the galvanized sheet at both sides of the plasma cutting torch 11 to perform the pressing and positioning work on the galvanized sheet. Then, by utilizing the rolling characteristics of the two groups of pressure rollers, when the Y-axis guide rail 8 drives the plasma cutting torch 11 to horizontally displace for cutting, the two groups of pressure rollers can synchronously roll and displace along with the horizontal displacement of the cutting torch 11, always maintaining the dynamic pressing on the cutting part of the galvanized sheet. When the X-axis guide rail 9 drives the plasma cutting torch 11 to translate left and right for cutting, since the two groups of pressure rollers penetrate the left-right translation cutting path of the plasma cutting torch 11, they can maintain the static pressing on the cutting part of the galvanized sheet in a static pressure state, so that the cutting path of the galvanized sheet is always limited between the two groups of pressure rollers. On the one hand, it avoids the situation that the galvanized sheet during cutting warps and impacts the cutting torch head due to stress or other reasons. On the other hand, it can press the galvanized sheet during cutting in real time, press down on the galvanized sheet that reciprocates to clean the burrs of the cutting seam by the grid plate 3, and form a counter-pressure state with the grid plate 3, so that the grid plate 3 maintains a flat-pushing friction slag removal of the burrs of the cutting seam, avoiding the situation that the galvanized sheet warps during slag removal.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A galvanized sheet plasma arc cutting mechanism, characterized in that: include: Cutting platform; Y-axis guide rails, wherein the Y-axis guide rails are provided in two groups, respectively provided on both sides of the cutting platform, and a downward pressing boss parallel to the slide table of the Y-axis guide rails is provided below the slide table of the Y-axis guide rails; Grid plates, which are arranged inside the cutting platform along the travel track of the Y-axis guide rail, and the grid plates are arranged in a split manner in groups of two; The driving assembly is arranged below the travel track of the Y-axis guide rail. When the Y-axis guide rail drives the cutting gun to move to cut the galvanized sheet, it drives the downward pressing boss to press against the driving assembly, thereby forming a driving force to drive the grid plate below the cutting gun to move back and forth, so that the grid plate rubs back and forth relative to the galvanized sheet, and rubs back and forth to remove slag on the cut weld.

2. The plasma arc cutting mechanism for galvanized sheets according to claim 1, wherein: Also includes: A water tank, wherein the water tank is disposed inside the cutting platform; One-way flow guide ports, which are opened at the bottom of the grid plate and immersed in the water tank, and one side of the two groups of one-way flow guide ports is respectively provided with a one-way cover plate that rotates relatively; The fourth drive shaft is arranged between two adjacent groups of grid plates, and the fourth drive shaft is provided with a water-diverting flap along its axial direction, which is staggered from the one-way cover plate and immersed in the water tank.

3. The plasma arc cutting mechanism for galvanized sheets according to claim 2, characterized in that: The plate surface of the one-way cover plate is larger than the opening of the one-way air guide port, and a hinge is provided on the top of the one-way cover plate to enable the one-way cover plate to be opened and closed along the one-way air guide port.

4. A galvanized sheet plasma arc cutting mechanism according to claim 2, characterized in that: Also includes: An X-axis guide rail, the X-axis guide rail is arranged above the slide table of the Y-axis guide rail; The electric push rod is arranged on the Y-axis guide rail, the telescopic end of the electric push rod is provided with a support frame, and the sides of the support frame are respectively provided with a first pressing roller and a second pressing roller facing the two sides of the cutting gun.

5. A galvanized sheet plasma arc cutting mechanism according to claims 2-4, characterized in that: The drive assembly comprises: A reciprocating slide, wherein the reciprocating slide is arranged on the cutting platform in a flush manner with the grid plate, a support seat fixedly connected to the grid plate is arranged on one side of the reciprocating slide, and a reciprocating drive structure for driving the grid plate to move is arranged on the other side of the reciprocating slide, and the reciprocating drive structure is installed on the drive housing in a split type; A pressure-bearing seat is arranged on the reciprocating slide, a pressure rod is arranged on one side of the pressure-bearing seat, the top end of the pressure rod is provided with a pressure-bearing concave platform which is in pressure contact with the downward pressure boss, the bottom end of the pressure rod is provided with a reciprocating rack which is meshed with the reciprocating driving structure, and the pressure rod is provided with a compression spring which provides displacement reset for the pressure-bearing concave platform.

6. The plasma arc cutting mechanism for galvanized sheet according to claim 5, characterized in that: The drive assembly also includes: Racks, the racks are provided in two groups, and the racks are provided on the displacement track of the support seat in a tooth pressure inverted form; The passive gear is arranged at both ends of the fourth driving shaft, and the passive gear has a built-in support seat and is meshed with the rack.

7. The plasma arc cutting mechanism for galvanized sheet according to claim 5, characterized in that: The reciprocating drive structure includes a second drive shaft and a third drive shaft which are arranged on the drive shell horizontally and relatively close to the grid plate, wherein the second drive shaft and the third drive shaft are respectively provided with a driving gear 1 and a driving gear 2 which mesh with each other in the axial middle part, forming the second drive shaft and the third drive shaft in a forward and reverse state, and one end of the second drive shaft and the third drive shaft are respectively provided with a reciprocating gear 1 and a reciprocating gear 2 with staggered teeth, so that the reciprocating gear 1 and the reciprocating gear 2 are staggeredly meshed with the reciprocating rack after being pressed down in a forward and reverse direction, pushing the reciprocating rack to move back and forth, forming a driving force for driving the grid plate to reciprocate and rub against the galvanized plate to remove slag.

8. The plasma arc cutting mechanism for galvanized sheet according to claim 5, wherein: Two adjacent groups of pressure-bearing concave platforms are arranged in a staggered manner, and the downward pressing protrusions are arranged in two groups, which are respectively pressed and engaged with the adjacent pressure-bearing concave platforms in a staggered manner.

9. The plasma arc cutting mechanism for galvanized sheet according to claim 5, characterized in that: Also includes: Overflow trough, the overflow trough is arranged on both sides of the trough body of the water trough to collect the overflow water driven by the grid plate in the water trough; Expansion cover, the expansion cover is of a bellows structure. The expansion cover is arranged between adjacent reciprocating slides along the trough body direction of the overflow trough. The expansion cover expands and contracts with the reciprocating slide, and always blocks the overflow water in the overflow trough.

10. A plasma arc cutting mechanism for galvanized sheets according to claim 5, characterized in that: It further includes a first fixed seat arranged on the reciprocating slide and a second fixed seat arranged on the driving shell. A reset pull rod that slides telescopically along the second fixed seat is arranged on one side of the first fixed seat. A reset spring that applies elastic telescopic reset to the reset pull rod is arranged on the reset pull rod, so that after the reciprocating displacement driving force of the reciprocating slide disappears, the grid plate is driven to reset.

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