A CNC cutting device for plasma arc galvanized sheet

Abstract

This invention discloses a CNC cutting device for plasma arc galvanized sheet metal, relating to the field of plasma cutting technology. The CNC cutting device includes a support frame, and further includes: a sword grid, positioned above the support frame with its length parallel to the X-axis; a lifting plate, positioned above the support frame, having a passage groove within it, with the sword grid located within the passage groove; and a base plate between adjacent lifting plates; and a counter-lifting mechanism, positioned between the sword grid and the lifting plate, for driving the sword grid and lifting plate to move in opposite directions. By setting up the lifting plate, sword grid, and base plate, during cutting, the lifting plates located on both sides of the plasma nozzle move up to contact the lower surface of the galvanized sheet metal. An air duct is formed between the two sets of lifting plates, the base plate, and the area of ​​the galvanized sheet metal to be cut, thereby confining the dust generated during cutting to a certain extent within the air duct and reducing the amount of dust escaping from the contact area between the lifting plate and the galvanized sheet metal.

Description

Technical Field

[0001] This invention relates to the field of plasma cutting technology, specifically to a CNC cutting device for plasma arc galvanized sheet metal. Background Technology

[0002] The surface of galvanized sheet is coated with zinc to prevent corrosion. Since the melting point of zinc is much lower than that of steel, a large amount of harmful fumes are generated during plasma cutting, which seriously endangers human health. Therefore, it is necessary to remove the fumes during the cutting process.

[0003] In existing technology, a blower is usually installed on one side of the cutting platform and an exhaust fan is installed on the other side. The exhaust fan and blower are moved synchronously with the moving platform to remove smoke and dust. However, existing cutting platforms are generally composed of a scissor grid with a large number of gaps. When removing smoke and dust, some of the smoke and dust will escape from the gaps, reducing the removal effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a CNC cutting device for plasma arc galvanized sheet metal, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a CNC cutting device for plasma arc galvanized sheet metal, comprising a support, and further comprising: a sword grid, the sword grid being disposed above the support, the length direction of the sword grid being parallel to the X-axis; a lifting plate, the lifting plate being disposed above the support, the lifting plate having a passage groove inside the lifting plate, the sword grid being located in the passage groove, and a base plate being between two adjacent sets of lifting plates; a counter-lifting mechanism, the counter-lifting mechanism being disposed between the sword grid and the lifting plate, for driving the sword grid and the lifting plate to move in opposite directions; a plasma nozzle, the plasma nozzle being located above the support and configured with a driving mechanism to drive it to move along the X, Y, and Z axes; a synchronization mechanism, the synchronization mechanism being located on both sides of the support, for controlling the action of the counter-lifting mechanism, so that the lifting plates on both sides of the area where the plasma nozzle is located move upward, and an air duct is formed between the two sets of lifting plates, the base plate, and the area of ​​the galvanized sheet metal to be cut; and a ventilation component, the ventilation component being connected to the air duct, for removing smoke and dust from the air duct.

[0006] Furthermore, side support plates are fixed on both sides above the bracket, and a positioning element is fixed between the two opposing side support plates; the sword grid and the lifting plate are both slidably mounted on the side support plates, and the connection end of the sword grid with the side support plate is located below the positioning element, while the connection end of the lifting plate with the side support plate is located above the positioning element.

[0007] Furthermore, the positioning component is provided with a horizontal sliding groove, which penetrates the upper and lower surfaces of the positioning component, and the opposing lifting mechanism is disposed within the horizontal sliding groove; the opposing lifting mechanism includes: a first slider, which is slidably disposed at one end of the horizontal sliding groove, with a first rod and a second rod respectively hinged to its upper and lower ends; a second slider, which is slidably disposed at the other end of the horizontal sliding groove, with a third rod and a fourth rod respectively hinged to its upper and lower ends; one end of the first rod and the third rod are both hinged to the bottom end of the lifting plate, and the second rod and the fourth rod are both hinged to the bottom end of the sword grid; a third spring, which is disposed between the first slider and the second slider, and pushes the first slider and the second slider away from each other.

[0008] Furthermore, the opposing lifting mechanism further includes: a first cable, which passes through the positioning member, through which the first slider is pierced, and the second slider is fixedly connected to the first cable, such that pulling the first cable can move the second slider closer to the first slider; a second cable, which passes through the positioning member, through which the second slider is pierced, and the first slider is fixedly connected to the second cable, such that pulling the second cable can move the first slider closer to the second slider; and a second spring is provided at one end of both the first cable and the second cable, the second spring being used to reset the first cable and the second cable.

[0009] Furthermore, the synchronization mechanism includes: a horizontal pull block, which is slidably mounted on the side support plate with the sliding direction parallel to the X-axis; a horizontal pull block is provided on each side of a single sword grid, one horizontal pull block is fixedly connected to a first cable, and the other horizontal pull block is fixedly connected to a second cable; a roller, which is rotatably mounted on the lower side of the horizontal pull block, and a certain gap is left between the roller and the side support plate; and a horizontal pull assembly, which is provided on each side of a single sword grid, and the horizontal pull assembly can be inserted into the gap between the roller and the side support plate to change the width of the gap from the initial state to an increased state.

[0010] Furthermore, the lateral tension assembly is composed of drive plates, and a single lateral tension assembly includes two drive plates arranged parallel to each other along the Y-axis; the two sides of the drive plate are beveled portions, the width of the beveled portions is less than the width of the initial gap, the middle part of the drive plate is a straight portion, the width of the straight portion is greater than the width of the initial gap; the length of the straight portion is not less than the distance between two adjacent rollers, and the length of the beveled portion is not greater than half the distance between two adjacent rollers.

[0011] Furthermore, the ventilation assembly includes a blower and an exhaust fan, which are respectively located on both sides of the sieve; the plasma nozzle, the synchronization mechanism, the blower, and the exhaust fan are located on the same straight line and move synchronously in the Y-axis direction.

[0012] Furthermore, a slag discharge port is provided on the side of the base plate near the exhaust fan, and a collection groove is provided at the bottom end of the base plate along the Y-axis direction. The collection groove is used to collect the molten slag falling from the slag discharge port.

[0013] Furthermore, the plasma nozzle has parallel support grooves on both sides along the X-axis, and a cutting frame is slidably mounted on the support grooves. The projection of the plasma nozzle along the Z-axis is located within the cutting frame. The sword grid has a first winding shaft and a second winding shaft on both sides respectively. A first flexible diaphragm is connected between the first winding shaft and the cutting frame, and a second flexible diaphragm is connected between the second winding shaft and the cutting frame. A first guide roller is provided on the side of the first winding shaft near the cutting frame, and a second guide roller is provided on the side of the second winding shaft near the cutting frame. The first guide roller and the second guide roller are used to keep the first flexible diaphragm and the second flexible diaphragm horizontal and at the same height.

[0014] Furthermore, a third motor is provided on one side of the first winding shaft, which drives the first winding shaft to rotate; a fourth motor is provided on one side of the second winding shaft, which drives the second winding shaft to rotate; a linear position sensor is installed on one side of the plasma nozzle, which acquires the position information of the plasma nozzle in the X-axis direction; a controller is also installed on the bracket, which is electrically connected to the linear position sensor, the third motor, and the fourth motor. The controller controls the rotation of the third motor and the fourth motor through the position information of the plasma nozzle in the X-axis direction, so that the cutting frame moves synchronously with the plasma nozzle.

[0015] The present invention has the following beneficial effects:

[0016] (1) The plasma arc galvanized sheet CNC cutting device, by setting up lifting plates, sword grids and base plates, during cutting, the lifting plates located on both sides of the plasma nozzle move up to contact the lower surface of the galvanized sheet. The two sets of lifting plates, base plates and the area of ​​the galvanized sheet to be cut form an air duct, so that the smoke and dust generated during cutting are constrained in the air duct to a certain extent, reducing the amount of smoke and dust escaping from the contact part between the lifting plates and the galvanized sheet.

[0017] (2) The plasma arc galvanized sheet CNC cutting device sets a passage groove in the lifting plate and makes the height of the top of the sword grid greater than the height of the lifting plate in the initial state. The sword grid can move along the Z-axis in the passage groove. When slag accumulates at the top of the sword grid, it can be removed by the lifting plate during the process of being drawn into the passage groove. The removed slag falls onto the bottom plate, thereby avoiding a large amount of slag generated during cutting from accumulating at the top of the sword grid.

[0018] (3) The plasma arc galvanized sheet CNC cutting device sets a cutting frame and sets a first flexible diaphragm and a first flexible diaphragm on both sides of the cutting frame to shield part of the air duct on both sides of the length direction of the sword grid, thereby reducing the amount of smoke and dust escaping from both sides.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a top view of the overall structure of the present invention;

[0022] Figure 3 This is a side view of the structure of the present invention;

[0023] Figure 4 For the present invention Figure 2 Enlarged diagram of area A in the middle;

[0024] Figure 5 This is a schematic diagram of the cooperation between a single sword grid and the lifting plate of the present invention;

[0025] Figure 6 This is a side view of a single sword grid in conjunction with a lifting plate according to the present invention;

[0026] Figure 7 This is a schematic diagram showing the cooperation of a single sword grid, lifting plate, and opposing lifting mechanism of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged diagram of area C;

[0028] Figure 9 This is a schematic cross-sectional view of a single sword grid, lifting plate, and opposing lifting mechanism of the present invention;

[0029] Figure 10 This is a schematic diagram of the opposing lifting mechanism of the present invention;

[0030] Figure 11 This is a schematic diagram showing the state of the galvanized sheet, the sword grid, the lifting plate, and the synchronization mechanism when the present invention is in the cutting state.

[0031] Figure 12 This is a side view of the galvanized sheet, sword grid, lifting plate, and synchronization mechanism when the present invention is in the cutting state.

[0032] Figure 13 For the present invention Figure 11 Enlarged diagram of area C;

[0033] Figure 14 For the present invention Figure 11 A bottom view diagram after the galvanized sheet has been removed;

[0034] Figure 15 For the present invention Figure 3 Enlarged diagram of area B in the middle;

[0035] Figure 16 This is a schematic diagram of the installation of the exhaust fan and drive board of the present invention;

[0036] Figure 17 This is a schematic diagram of the installation of the hair dryer and the drive board of the present invention;

[0037] Figure 18 This is a schematic diagram of the cutting frame of the present invention in conjunction with the first flexible diaphragm and the second flexible diaphragm;

[0038] Figure 19 This is a side view of the cutting frame of the present invention in conjunction with the first flexible diaphragm and the second flexible diaphragm.

[0039] In the diagram, 1. Galvanized sheet metal; 2. Bracket; 3. First guide rail; 4. Second guide rail; 5. Third guide rail; 6. Fourth guide rail; 7. First crossbeam; 8. Second crossbeam; 9. First slide table; 10. Second slide table; 11. Third slide table; 12. Fourth slide table; 13. Fifth slide table; 14. Sixth slide table; 15. Plasma nozzle; 16. Exhaust pipe; 17. Hair dryer; 18. Exhaust fan; 181. Connection port; 19. First motor; 20. Second motor; 21. Third motor; 22. Fourth motor; 23. Support rod; 24. Collection tank; 25. Sword grid; 251. Extension plate; 252. Lower guide slider; 26. Lifting plate; 261. Passage groove; 262. Upper guide slider; 27. Cutting frame; 28. First flexible diaphragm; 29. ​​Second flexible diaphragm. 30. Supporting groove rod; 31. Side support plate; 311. Upper sliding groove; 312. Lower sliding groove; 32. Bottom plate; 321. Slag discharge port; 33. Connecting piece; 34. Positioning piece; 341. Receiving cavity; 342. Horizontal sliding groove; 35. Upper accordion cover; 36. Lower accordion cover; 37. Horizontal pull block; 38. Roller; 39. Guide rod; 40. First spring; 41. First cable; 42. Second cable; 43. Second spring; 44. First slider; 45. Second slider; 46. First rod; 47. Second rod; 48. Third rod; 49. Fourth rod; 50. Third spring; 51. Stabilizing rod; 52. Drive plate; 53. Folding plate; 54. First winding shaft; 55. Second winding shaft; 56. First guide roller; 57. Second guide roller; 58. Mounting plate. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0042] The following is based on Figures 1-19 This invention describes a CNC cutting device for plasma arc galvanized sheet metal provided in an embodiment of the present invention.

[0043] Please see Figures 1-7This invention provides a technical solution: a CNC cutting device for plasma arc galvanized sheet metal, including a support 2 and a sword grid 25. The sword grid 25 is located above the support 2, and its length direction is parallel to the X-axis. Multiple sword grids 25 are arranged at equal intervals along the Y-axis. The sword grids 25 support the galvanized sheet metal 1. Each sword grid 25 is provided with a lifting plate 26, which is also located above the support 2. In the initial state, the height of the top of the sword grid 25 is greater than the height of the lifting plate 26. The initial state refers to the state when the top of the sword grid 25 supports the galvanized sheet metal 1. The lifting plate 26 has a passage groove 261, which is set along the length direction of the lifting plate 26 and penetrates the lifting plate 26 along the Z-axis. The sword grid 25 is located in the passage groove 261, so that the sword grid 25 can move along the Z-axis within the passage groove 261.

[0044] Specifically, side support plates 31 are fixed on both sides above the bracket 2, and positioning members 34 are fixed between the two opposing side support plates 31. The number of side support plates 31 and positioning members 34 corresponds to the number of sword grids 25. Sword grids 25 and lifting plates 26 are slidably installed on the side support plates 31, and the connection end of sword grids 25 and side support plates 31 is located below the positioning members 34, while the connection end of lifting plates 26 and side support plates 31 is located above the positioning members 34. For example, an upper sliding groove 311 is opened on the upper side of the side support plate 31, and upper guide sliders 262 are fixed on both sides of the lifting plate 26. The upper guide sliders 262 slide in the upper sliding groove 311. The lower end of sword grids 25 extends to the lower part of positioning members 34, and a lower guide slider 252 is fixed at the bottom end of sword grids 25. Correspondingly, a lower sliding groove 312 is opened on the lower side of the side support plate 31, and the lower guide slider 252 can slide in the lower sliding groove 312.

[0045] Furthermore, a base plate 32 is provided between two adjacent sets of lifting plates 26. The base plate 32 is fixed between two adjacent positioning members 34, and the bottom of the base plate 32 is fixed to the bracket 2 by a support rod 23.

[0046] Furthermore, a counter-lifting mechanism is provided between the sword grid 25 and the lifting plate 26. This can be understood as the counter-lifting mechanism being positioned between the bottom end of the lifting plate 26 and the bottom end of the sword grid 25. The counter-lifting mechanism is used to drive the sword grid 25 and the lifting plate 26 to move in opposite directions, thereby allowing the sword grid 25 to retract into the passage groove 261 of the lifting plate 26. At the same time, it causes the lifting plate 26 to move upward, so that the top end of the lifting plate 26 moves to the position where the top end of the sword grid 25 was in the initial state. Preferably, the distance between the inner wall of the passage groove 261 and the surface of the sword grid 25 is 2-5 mm. When slag accumulates at the top end of the sword grid 25, it can be removed by the lifting plate 26 during the process of being retracted into the passage groove 261. The removed slag falls onto the base plate 32, thereby preventing a large amount of slag generated during cutting from accumulating at the top end of the sword grid 25.

[0047] Furthermore, a plasma nozzle 15 is provided above the support 2, and a drive mechanism is configured to drive it to move along the X, Y, and Z axes. Specifically, a first guide rail 3 and a second guide rail 4 are respectively provided on both sides of the support 2. A first slide 9 is slidably provided on the first guide rail 3, and a second slide 10 is slidably provided on the second guide rail 4. A first crossbeam 7 is provided above the support 2 along the X-axis direction. The two ends of the first crossbeam 7 are respectively fixed on the first slide 9 and the second slide 10. A fifth slide 13 is slidably provided on the first crossbeam 7, and the plasma nozzle 15 is installed on the fifth slide 13. A first motor 19 is provided on the first slide 9 or the second slide 10. The first motor 19 can rotate through a drive gear and cooperate with a rack, thereby realizing the movement of the plasma nozzle 15 in the Y-axis direction. A second motor 20 is provided on the fifth slide 13. The second motor 20 can rotate through a drive gear and cooperate with a rack, thereby realizing the movement of the plasma nozzle 15 in the X-axis direction. The movement of the plasma nozzle 15 in the Z-axis can be realized by a motor screw or a cylinder.

[0048] In addition, a synchronization mechanism is provided on both sides of the bracket 2. The synchronization mechanism is used to control the action of the opposing lifting mechanism so that the lifting plates 26 on both sides of the area where the plasma nozzle 15 is located move upward. The lifting plates 26 move upward to the position where the top of the sword grid 25 is located when it has not moved downward. At this time, an air duct is formed between the two sets of lifting plates 26, the base plate 32 and the area to be cut of the galvanized sheet 1. The projection of the plasma nozzle 15 in the Z-axis direction is located in the area where the air duct is located, so that the smoke and dust generated by cutting are constrained in the air duct to a certain extent, reducing the amount of smoke and dust escaping from the contact part between the lifting plate 26 and the galvanized sheet 1. Compared with the prior art, directly supporting the cutting part of the galvanized sheet 1 through the sword grid 25 will cause the smoke and dust to escape from the gaps between the teeth of the sword grid 25.

[0049] In addition, ventilation components are provided on both sides of the bracket 2. The ventilation components are connected to the air duct and are used to remove smoke and dust in the air duct. The ventilation components include a blower 17 and an exhaust fan 18. The blower 17 and the exhaust fan 18 are respectively located on both sides of the sword grid 25. The plasma nozzle 15, the synchronization mechanism, the blower 17 and the exhaust fan 18 are located on the same straight line and move synchronously in the Y-axis direction.

[0050] Specifically, a third guide rail 5 and a fourth guide rail 6 are respectively provided on both sides of the bracket 2. A third slide table 11 is slidably provided on the third guide rail 5, and a fourth slide table 12 is slidably provided on the fourth guide rail 6. The exhaust fan 18 is installed on the third slide table 11, and the blower 17 is installed on the fourth slide table 12. The third slide table 11 and the fourth slide table 12 are fixedly connected to the first crossbeam 7, so that the plasma nozzle 15, the synchronization mechanism, the blower 17 and the exhaust fan 18 move synchronously.

[0051] See Figures 7-10 A horizontal slide groove 342 is provided inside the positioning member 34, and the horizontal slide groove 342 penetrates the upper and lower surfaces of the positioning member 34. The opposing lifting mechanism is provided inside the horizontal slide groove 342.

[0052] The aforementioned opposing lifting mechanism includes a first slider 44, which is slidably disposed at one end of a horizontal slide groove 342. A first rod 46 and a second rod 47 are respectively hinged to the upper and lower ends of the first slider 44. The mechanism also includes a second slider 45, which is slidably disposed at the other end of the horizontal slide groove 342. A third rod 48 and a fourth rod 49 are respectively hinged to the upper and lower ends of the second slider 45. The first rod 46, the second rod 47, the third rod 48, and the fourth rod 49 are all of the same length. One end of the first rod 46 and the third rod 48 are both hinged to the bottom end of the lifting plate 26, and their hinge points are close to or overlap each other. The second rod 47 and the fourth rod 49 are both hinged to the bottom end of the sword grid 25, and their hinge points are close to or overlap each other.

[0053] Furthermore, a third spring 50 is provided between the first slider 44 and the second slider 45. The third spring 50 is used to push the first slider 44 and the second slider 45 away from each other. A stabilizing rod 51 is provided in the horizontal groove 342. The first slider 44 and the second slider 45 are slidably connected to the stabilizing rod 51, and the third spring 50 is sleeved on the stabilizing rod 51. Under the action of the third spring 50, the first slider 44 and the second slider 45 are at their farthest distance in the initial state. When the first slider 44 and the second slider 45 overcome the force of the third spring 50 and move closer to each other under the action of external force, the lifting plate 26 can be pushed up and the sword grid 25 can be pushed down. When the external force disappears, the first slider 44 and the second slider 45 return to the initial state under the action of the third spring 50, thereby making the sword grid 25 and the lifting plate 26 return to their original state.

[0054] Optionally, the horizontal slide 342 can be composed of two parts, with the first slider 44 and the second slider 45 located in different parts. In this case, two third springs 50 can be provided, with the two third springs 50 located in different parts.

[0055] It should be noted that multiple opposing lifting mechanisms can be set within a single positioning component 34 to provide multi-point support for the sword grid 25 and the lifting plate 26. Furthermore, two sets of positioning components 34 can be set at a single sword grid 25, with the two sets of positioning components 34 located on both sides of the sword grid 25, thereby providing simultaneous support for both sides of the sword grid 25 and the lifting plate 26, improving the support force and stability of both. At this time, an extension plate 251 can be fixed at the bottom end of the sword grid 25 to increase the installation area at the bottom end of the sword grid 25.

[0056] Furthermore, to prevent the molten slag from contacting the opposing lifting mechanism, an upper accordion cover 35 can be provided between the upper side of the positioning member 34 and the bottom end of the lifting plate 26, and a lower accordion cover 36 can be provided between the lower side of the positioning member 34 and the extension plate 251.

[0057] See Figures 8-10 The aforementioned opposing lifting mechanism also includes a first cable 41, which is inserted into the positioning member 34. The first slider 44 is penetrated by the first cable 41, and the second slider 45 is fixedly connected to the first cable 41, so that pulling the first cable 41 can drive the second slider 45 to move towards the side closer to the first slider 44.

[0058] Furthermore, a second cable 42 is provided inside the positioning component 34, through which the second slider 45 is pierced. The first slider 44 is fixedly connected to the second cable 42. Pulling the second cable 42 can move the first slider 44 to the side closer to the second slider 45. The first cable 41 and the second cable 42 can be steel wire ropes or synthetic fiber ropes.

[0059] It should be noted that the pulling directions of the first cable 41 and the second cable 42 are opposite, so that when the first cable 41 and the second cable 42 are pulled by an external force, the first slider 44 and the second slider 45 can move closer to each other, and the end of the first cable 41 and the second cable 42 subjected to the external force extends to the outside of the positioning member 34.

[0060] In addition, a second spring 43 is provided at one end of the first cable 41 and the second cable 42. The second spring 43 is used to drive the first cable 41 and the second cable 42 to reset. Specifically, taking the second cable 42 as an example, a receiving cavity 341 is opened in the positioning member 34 near the end of the second cable 42. The second spring 43 is located in the receiving cavity 341. After the second cable 42 passes through the second spring 43, it is fixed to the spring washer, so that when the second cable 42 is pulled, the spring washer drives the second spring 43 to compress. The installation method of the first cable 41 and the second spring 43 is the same as that of the second cable 42.

[0061] See figure Figure 5 , Figure 6 , Figures 12-17 The aforementioned synchronization mechanism includes a horizontal pull block 37, which is slidably mounted on a side support plate 31 with the sliding direction parallel to the X-axis. Specifically, a guide rod 39 is fixedly mounted on one side of the horizontal pull block 37, and the guide rod 39 is slidably connected to the side support plate 31. A first spring 40 is provided between the guide rod 39 and the side support plate 31. The first spring 40 is used to drive the horizontal pull block 37 closer to the side support plate 31. A horizontal pull block 37 is provided on each side of a single sword grid 25. One horizontal pull block 37 is fixedly connected to a first cable 41, and the other horizontal pull block 37 is fixedly connected to a second cable 42. When opposing lifting mechanisms are provided on both sides of the sword grid 25, each horizontal pull block 37 is fixed to two first cables 41 or second cables 42.

[0062] Furthermore, a roller 38 is installed on the lower side of the horizontal tie block 37, and a certain gap is left between the roller 38 and the side support plate 31.

[0063] Additionally, it includes a transverse tension assembly. A set of transverse tension assemblies is provided on each side of a single sword guard 25. These assemblies can be inserted into the gap between the roller 38 and the side support plate 31, causing the gap width to change from its initial state to an increased state. Specifically, in conjunction with... Figure 16 and Figure 17 The horizontal pull assembly near the exhaust fan 18 is fixed to one side of the third slide 11 by the folding plate 53, and the horizontal pull assembly near the blower 17 is fixed to one side of the fourth slide 12 by the folding plate 53, so that the horizontal pull assembly moves synchronously with the plasma nozzle 15 on the Y-axis.

[0064] See Figures 12-14The aforementioned horizontal tension assembly consists of drive plates 52. A single horizontal tension assembly includes two drive plates 52 arranged parallel to each other along the Y-axis. The two sides of a single drive plate 52 are beveled portions, the width of which is less than the width of the initial gap. The middle part of the drive plate 52 is a straight portion, the width of which is greater than the width of the initial gap. It should be noted that the straight portion and the beveled portion refer to the side of the drive plate 52 away from the side support plate 31. This allows the drive plate 52 to be inserted into the gap between the roller 38 and the side support plate 31 through the beveled portion when it moves, thereby increasing the distance between the roller 38 and the side support plate 31. The straight portion keeps the distance between the roller 38 and the side support plate 31 at its maximum. The reason for setting two drive plates 52 is to drive two lifting plates 26 simultaneously, so that the two lifting plates 26 located on both sides of the plasma nozzle 15 move upward and contact the galvanized sheet 1, forming an air duct.

[0065] Furthermore, to ensure that two lifting plates 26 are always in contact with the galvanized sheet 1 during the movement of the horizontal tensioning assembly, the length of the straight portion is not less than the distance between two adjacent rollers 38, and the length of the angled portion is not greater than half the distance between two adjacent rollers 38. This ensures that a single drive plate 52 is always in contact with two adjacent rollers 38. When one roller 38 is in the angled portion, the other roller 38 is in the straight portion, thus ensuring that a single drive plate 52 can always drive one lifting plate 2 during the movement. At its highest point, the two lifting plates 26, in cooperation with the two drive plates 52, are positioned at their highest points, thus forming an air duct. Since the plasma nozzle 15 moves synchronously with the horizontal pulling assembly, the projection of the cutting part of the galvanized sheet 1 in the Z-axis direction is always within the air duct. Furthermore, the lifting plate 26 located between the two lifting plates 26 at their highest points is not at its highest point, meaning that the lifting plate 26 does not contact the galvanized sheet 1. This prevents the plasma nozzle 15 from directly contacting the lifting plate 26 during cutting, thus avoiding damage to the lifting plate 26.

[0066] See Figure 1 , Figure 2 and Figure 5 In order to facilitate the collection of molten slag falling on the bottom plate 32, a slag discharge port 321 is provided on the side of the bottom plate 32 near the exhaust fan 18, and a collection groove 24 is provided at the bottom end of the bottom plate 32 along the Y-axis direction. The collection groove 24 is used to collect the molten slag falling from the slag discharge port 321. When the blower 17 and the exhaust fan 18 are working, the airflow will drive the molten slag on the bottom plate 32 to move towards the side of the exhaust fan 18, and thus fall into the collection groove 24 through the slag discharge port 321.

[0067] See Figure 1 , Figure 2 , Figure 18 and Figure 19When the width of the galvanized sheet 1 is less than the length of the sword grid 25, the air ducts on both sides of the sword grid 25 in the length direction cannot be blocked by the galvanized sheet 1, causing some dust to escape from both sides. In order to reduce the amount of dust escaping, support groove rods 30 are provided parallel to the X-axis on both sides of the plasma nozzle 15. A cutting frame 27 is slidably provided on the support groove rods 30. The projection of the plasma nozzle 15 along the Z-axis is located in the cutting frame 27. The plasma nozzle 15 can cut the galvanized sheet 1 by passing through the cutting frame 27. The cutting frame 27 also makes it easy for the operator to observe the cutting status. Specifically, a second crossbeam 8 is installed on one side of the first crossbeam 7. The two ends of the second crossbeam 8 are fixed to the first crossbeam 7. The two support groove rods 30 are respectively installed at the lower ends of the first crossbeam 7 and the second crossbeam 8 through the mounting plate 58.

[0068] Furthermore, a first winding shaft 54 ​​and a second winding shaft 55 are respectively provided on both sides of the length direction of the sword grid 25. The first winding shaft 54 ​​and the second winding shaft 55 are rotatably mounted on both ends of the mounting plate 58. A first flexible diaphragm 28 is connected between the first winding shaft 54 ​​and the cutting frame 27, and a second flexible diaphragm 29 is connected between the second winding shaft 55 and the cutting frame 27. The first flexible diaphragm 28 and the second flexible diaphragm 29 can be made of asbestos cloth or high silica glass fiber cloth.

[0069] Furthermore, a first guide roller 56 is provided on the side of the first winding shaft 54 ​​near the cutting frame 27, and a second guide roller 57 is provided on the side of the second winding shaft 55 near the cutting frame 27. The first guide roller 56 and the second guide roller 57 are at the same height. The first guide roller 56 and the second guide roller 57 are used to keep the first flexible diaphragm 28 and the second flexible diaphragm 29 horizontal and at the same height, so that the first flexible diaphragm 28 and the second flexible diaphragm 29 can horizontally cover the air duct, thereby reducing the amount of smoke and dust escaping from both sides of the air duct.

[0070] Optional, combined Figure 4 and Figure 16 To facilitate the removal of fumes above the cutting frame 27, an exhaust pipe 16 can be installed near the plasma nozzle 15. Specifically, a sixth slide 14 is slidably installed on the second crossbeam 8, and the exhaust pipe 16 is installed on the sixth slide 14. The sixth slide 14 and the fifth slide 13 are fixed together by a connector 33 so that the sixth slide 14 and the fifth slide 13 move synchronously. The exhaust pipe 16 is connected to the connection port 181 on the exhaust fan 18 through a flexible hose (not shown in the figure).

[0071] See Figure 18 and Figure 19In order to facilitate the control of the cutting frame 27 to move synchronously with the plasma nozzle 15, a third motor 21 is provided on one side of the first winding shaft 54. The third motor 21 is used to drive the first winding shaft 54 ​​to rotate. A fourth motor 22 is provided on one side of the second winding shaft 55. The fourth motor 22 is used to drive the second winding shaft 55 to rotate.

[0072] A linear position sensor is installed on one side of the plasma nozzle 15. The linear position sensor can be a magnetic grating ruler. The linear position sensor is used to obtain the position information of the plasma nozzle 15 in the X-axis direction. A controller is also installed on the bracket 2. The controller is electrically connected to the linear position sensor, the third motor 21 and the fourth motor 22. The controller controls the rotation of the third motor 21 and the fourth motor 22 through the position information of the plasma nozzle 15 in the X-axis direction so that the cutting frame 27 moves synchronously with the plasma nozzle 15.

[0073] During use (operation), the galvanized sheet 1 is placed above the support 2, and multiple sword grids 25 support the galvanized sheet 1. When the drive device starts to operate and cuts the galvanized sheet 1, it drives the horizontal pull assembly to move, so that the horizontal pull assembly is inserted into the gap between the roller 38 and the side support plate 31, which drives the horizontal pull block 37 to move. The horizontal pull block 37 pulls the first cable 41 and the second cable 42 to make the opposing lifting mechanism move, thereby pushing the lifting plates 26 located on both sides of the plasma nozzle 15 to move up to contact the lower surface of the galvanized sheet 1. An air duct is formed between the two sets of lifting plates 26, the base plate 32 and the area of ​​the galvanized sheet 1 to be cut. Under the action of the blower 17 and the exhaust fan 18, the smoke and dust are taken away by the exhaust fan 18.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A CNC cutting device for plasma arc galvanized sheet metal, comprising a support frame (2), characterized in that, Also includes: Sword grating (25), the sword grating (25) is disposed above the support (2), and the length direction of the sword grating (25) is parallel to the X-axis; Lifting plate (26), the lifting plate (26) is located above the bracket (2), the lifting plate (26) has a passage groove (261), the sword grid (25) is located in the passage groove (261), and there is a base plate (32) between two adjacent sets of lifting plates (26). A counter-lifting mechanism is provided between the sword grid (25) and the lifting plate (26) for driving the sword grid (25) and the lifting plate (26) to move in opposite directions; Plasma nozzle (15), which is located above the support (2) and is equipped with a drive mechanism to drive it to move along the X, Y and Z axes; Synchronization mechanism, located on both sides of the bracket (2), is used to control the action of the opposing lifting mechanism so that the lifting plates (26) on both sides of the area where the plasma nozzle (15) is located move upward, and an air duct is formed between the two sets of lifting plates (26), the base plate (32) and the area to be cut of the galvanized sheet. A ventilation assembly, which is connected to an air duct, is used to remove smoke and dust from the air duct. Side support plates (31) are fixed on both sides above the bracket (2), and positioning members (34) are fixed between the two opposite side support plates (31). The sword guard (25) and the lifting plate (26) are both slidably mounted on the side support plate (31), and the connection end of the sword guard (25) and the side support plate (31) is located below the positioning member (34), while the connection end of the lifting plate (26) and the side support plate (31) is located above the positioning member (34). The positioning component (34) is provided with a horizontal slide groove (342), which penetrates the upper and lower surfaces of the positioning component (34), and the opposing lifting mechanism is disposed in the horizontal slide groove (342). The opposing lifting mechanism includes: The first slider (44) is slidably disposed at one end of the horizontal slide groove (342), and the upper and lower ends of the first slider (44) are respectively hinged to the first rod (46) and the second rod (47). The second slider (45) is slidably disposed at the other end of the horizontal slide groove (342), and the upper and lower ends of the second slider (45) are respectively hinged to the third rod (48) and the fourth rod (49). One end of the first rod (46) and the third rod (48) are both hinged to the bottom end of the lifting plate (26), and the second rod (47) and the fourth rod (49) are both hinged to the bottom end of the sword fence (25); A third spring (50) is disposed between the first slider (44) and the second slider (45) and pushes the first slider (44) and the second slider (45) away from each other; The opposing lifting mechanism further includes: The first cable (41) is inserted into the positioning member (34), the first slider (44) is penetrated by the first cable (41), and the second slider (45) is fixed to the first cable (41). Pulling the first cable (41) can drive the second slider (45) to move closer to the first slider (44). The second cable (42) is inserted into the positioning member (34). The second slider (45) is penetrated by the second cable (42). The first slider (44) is fixedly connected to the second cable (42). Pulling the second cable (42) can drive the first slider (44) to move closer to the second slider (45). A second spring (43) is provided at one end of the first cable (41) and the second cable (42), and the second spring (43) is used to drive the first cable (41) and the second cable (42) to reset; The synchronization mechanism includes: A horizontal pull block (37) is slidably mounted on a side support plate (31) with the sliding direction parallel to the X-axis. A horizontal pull block (37) is provided on each side of a single sword grid (25). One horizontal pull block (37) is fixedly connected to the first cable (41), and the other horizontal pull block (37) is fixedly connected to the second cable (42). Roller (38), the roller (38) is rotatably mounted on the lower side of the cross block (37), and there is a certain gap between the roller (38) and the side support plate (31); A set of the horizontal pull assembly is provided on both sides of a single sword grid (25). The horizontal pull assembly can be inserted into the gap between the roller (38) and the side support plate (31) so that the width of the gap changes from the initial state to the increased state.

2. The CNC cutting device for plasma arc galvanized sheet metal according to claim 1, characterized in that: The horizontal tension assembly consists of a drive plate (52), and a single horizontal tension assembly includes two drive plates (52) arranged in parallel along the Y-axis direction. The two sides of the drive plate (52) are beveled portions, the width of which is less than the width of the initial state gap, and the middle part of the drive plate (52) is a straight portion, the width of which is greater than the width of the initial state gap. The length of the straight portion is not less than the distance between two adjacent rollers (38), and the length of the angled portion is not greater than half the distance between two adjacent rollers (38).

3. The CNC cutting device for plasma arc galvanized sheet metal according to claim 2, characterized in that, The ventilation assembly includes a blower (17) and an exhaust fan (18), which are respectively located on both sides of the sieve (25); The plasma nozzle (15), synchronization mechanism, blower (17) and exhaust fan (18) are located on the same straight line and move synchronously in the Y-axis direction.

4. The CNC cutting device for plasma arc galvanized sheet metal according to claim 3, characterized in that: The bottom plate (32) has a slag discharge port (321) on the side near the exhaust fan (18), and the bottom end of the bottom plate (32) is provided with a collection groove (24) along the Y-axis direction. The collection groove (24) is used to collect the molten slag falling from the slag discharge port (321).

5. The CNC cutting device for plasma arc galvanized sheet metal according to claim 1, characterized in that: The plasma nozzle (15) has a support groove rod (30) parallel to the X-axis on both sides. A cutting frame (27) is slidably provided on the support groove rod (30). The projection of the plasma nozzle (15) along the Z-axis is located in the cutting frame (27). The sword grid (25) has a first winding shaft (54) and a second winding shaft (55) on both sides respectively. A first flexible diaphragm (28) is connected between the first winding shaft (54) and the cutting frame (27), and a second flexible diaphragm (29) is connected between the second winding shaft (55) and the cutting frame (27). The first winding shaft (54) is provided with a first guide roller (56) on the side near the cutting frame (27), and the second winding shaft (55) is provided with a second guide roller (57) on the side near the cutting frame (27). The first guide roller (56) and the second guide roller (57) are used to keep the first flexible diaphragm (28) and the second flexible diaphragm (29) horizontal and at the same height.

6. The CNC cutting device for plasma arc galvanized sheet metal according to claim 5, characterized in that: A third motor (21) is provided on one side of the first winding shaft (54), and the third motor (21) is used to drive the first winding shaft (54) to rotate. A fourth motor (22) is provided on one side of the second winding shaft (55), and the fourth motor (22) is used to drive the second winding shaft (55) to rotate. A linear position sensor is installed on one side of the plasma nozzle (15). The linear position sensor is used to obtain the position information of the plasma nozzle (15) in the X-axis direction. A controller is also installed on the bracket (2). The controller is electrically connected to the linear position sensor, the third motor (21) and the fourth motor (22). The controller controls the rotation of the third motor (21) and the fourth motor (22) through the position information of the plasma nozzle (15) in the X-axis direction so that the cutting frame (27) moves synchronously with the plasma nozzle (15).

Images