Numerical control cutting device for plasma arc galvanized plate

Abstract

The invention discloses a plasma arc galvanized plate numerical control cutting device, and relates to the technical field of plasma cutting. The plasma arc galvanized plate numerical control cutting device comprises a support and further comprises a sword grid arranged above the support, and the length direction of the sword grid is parallel to the X axis; the lifting plates are arranged above the support, passing grooves are formed in the lifting plates, the sword grids are located in the passing grooves, and a bottom plate is arranged between every two adjacent sets of lifting plates; and the opposite lifting mechanism is arranged between the sword grid and the lifting plate and used for driving the sword grid and the lifting plate to move oppositely. By arranging the lifting plates, the sword grid and the bottom plate, during cutting, the lifting plates located on the two sides of the plasma nozzle move upwards to make contact with the lower surface of the galvanized sheet, and an air flue is formed among the two sets of lifting plates, the bottom plate and the to-be-cut area of the galvanized sheet, so that smoke generated by cutting is restrained in the air flue to a certain degree; and the amount of smoke escaping from the contact part of the lifting plate and the galvanized plate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plasma cutting, in particular to a plasma arc galvanized sheet numerical control cutting device. Background Art

[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 smoke will be generated during plasma cutting, which seriously endangers human health. Therefore, the smoke needs to be removed while cutting.

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

[0004] In view of the shortcomings of the prior art, the present invention provides a plasma arc galvanized sheet CNC cutting device, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plasma arc galvanized sheet CNC cutting device, comprising a bracket, and also comprising: a sword grid, the sword grid being arranged above the bracket, the length direction of the sword grid being parallel to the X-axis; a lifting plate, the lifting plate being arranged above the bracket, the lifting plate having a passage groove therein, the sword grid being located in the passage groove, and a bottom plate being provided between two adjacent sets of lifting plates; an opposing lifting mechanism, the opposing lifting mechanism being arranged between the sword grid and the lifting plate, and being used to drive the sword grid and the lifting plate to move in opposite directions; a plasma nozzle, the plasma nozzle being arranged above the bracket and being configured with a driving mechanism to drive it to move along the X, Y and Z axes; a synchronization mechanism, the synchronization mechanism being arranged on both sides of the bracket, and being used to control the action of the opposing lifting mechanism, so that the lifting plates on both sides of the area where the plasma nozzle is located move up, and an air duct is formed between the two sets of lifting plates that move up, the bottom plate and the area to be cut of the galvanized sheet; and a ventilation component, the ventilation component being connected to the air duct, and being used to remove smoke and dust in the air duct.

[0006] Furthermore, side support plates are fixed on both sides above the bracket, and a positioning piece is fixed between the two opposite side support plates; the sword grid and the lifting plate are both slidably installed on the side support plates, and the connecting end of the sword grid and the side support plate is located below the positioning piece, and the connecting end of the lifting plate and the side support plate is located above the positioning piece.

[0007] Furthermore, a horizontal slide groove is provided in the positioning member, the horizontal slide groove passes through the upper and lower surfaces of the positioning member, and the opposing lifting mechanism is arranged in the horizontal slide groove; the opposing lifting mechanism includes: a first slider, the first slider is slidably arranged at one end of the horizontal slide groove, and the upper and lower ends of the first slider are respectively hinged to the first rod and the second rod; a second slider, the second slider is slidably arranged at the other end of the horizontal slide groove, and the upper and lower ends of the second slider are respectively hinged to the third rod and the fourth rod; 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 fence; a third spring, the third spring is arranged between the first slider and the second slider, and pushes the first slider and the second slider away from each other.

[0008] Furthermore, the opposite lifting mechanism also includes: a first cable, the first cable is passed through the positioning member, the first slider is passed through by the first cable, the second slider is fixedly connected to the first cable, and pulling the first cable can drive the second slider to move toward the side close to the first slider; a second cable, the second cable is passed through the positioning member, the second slider is passed through by the second cable, the first slider is fixedly connected to the second cable, and pulling the second cable can drive the first slider to move toward the side close to the second slider; a second spring is provided at one end of the first cable and the second cable, and the second spring is used to drive the first cable and the second cable to reset.

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

[0010] Furthermore, the transverse pulling assembly is composed of a driving plate, and a single set of transverse pulling assemblies includes two driving plates arranged in parallel along the Y-axis direction; the two sides of the driving plate are beveled portions, the width of the beveled portions is smaller than the width of the gap in the initial state, and the middle part of the driving plate is a straight portion, the width of the straight portion is larger than the width of the gap in the initial state; 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 of the distance between two adjacent rollers.

[0011] Furthermore, the ventilation assembly includes a blower and an exhaust fan, and the blower and exhaust fan are respectively arranged on both sides of the sword grid; the plasma nozzle, synchronization mechanism, blower and 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 one side of the bottom plate close to the exhaust fan, and a collecting trough is provided at the bottom end of the bottom plate along the Y-axis direction, and the collecting trough is used to receive the slag falling from the slag discharge port.

[0013] Furthermore, support slot rods are provided on both sides of the plasma nozzle in parallel along the X-axis direction, and a cutting frame is slidably provided on the support slot rods, and the projection of the plasma nozzle along the Z-axis is located in the cutting frame; a first winding shaft and a second winding shaft are provided on both sides of the sword grid, 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 close to the cutting frame, and a second guide roller is provided on the side of the second winding shaft close to the cutting frame, and the first guide roller and the second guide roller are used to keep the first flexible diaphragm and the second flexible diaphragm level and at the same height.

[0014] Furthermore, a third motor is provided on one side of the first winding shaft, and the third motor is used to drive the first winding shaft to rotate. A fourth motor is provided on one side of the second winding shaft, and the fourth motor is used to drive the second winding shaft to rotate. A linear position sensor is installed on one side of the plasma nozzle, and the linear position sensor is used to obtain position information of the plasma nozzle in the X-axis direction. A controller is also installed on the bracket, and the controller 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 according to 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: (1) The plasma arc galvanized sheet CNC cutting device is provided with a lifting plate, a sword grid and a bottom 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. An air duct is formed between the two sets of lifting plates, the bottom plate and the area of ​​the galvanized sheet to be cut, so that the smoke generated by the cutting is confined in the air duct to a certain extent, reducing the amount of smoke and dust escaping from the contact area between the lifting plate and the galvanized sheet.

[0016] (2) The plasma arc galvanized sheet CNC cutting device is provided with a passage groove in the lifting plate, and the height of the top of the sword grid is greater than the height of the lifting plate in the initial state. The sword grid can move along the Z-axis direction in the passage groove. When slag is accumulated on the top of the sword grid, the slag can be removed by the lifting plate during the process of being put into the passage groove, and the removed slag falls onto the bottom plate, thereby avoiding a large amount of slag generated during cutting from accumulating on the top of the sword grid.

[0017] (3) The plasma arc galvanized sheet CNC cutting device is provided with a cutting frame and a first flexible diaphragm and a second flexible diaphragm are horizontally provided on both sides of the cutting frame to block part of the air duct on both sides of the length direction of the sword fence, thereby reducing the amount of smoke and dust escaping from both sides.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic top view of the overall structure of the present invention; Figure 3 This is a side structural schematic diagram of the present invention; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of area A in the middle; Figure 5 This is a schematic diagram of the cooperation between a single sword grid and a lifting plate of the present invention; Figure 6 This is a side view of a single sword fence and a lifting plate in cooperation with each other according to the present invention; Figure 7 This is a schematic diagram of the coordination of a single sword fence, a lifting plate, and a facing lifting mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of area C in the middle; Figure 9 It is a cross-sectional schematic diagram of a single sword grid, a lifting plate and an opposing lifting mechanism of the present invention; Figure 10 This is a schematic structural diagram of the opposing lifting mechanism of the present invention; Figure 11 This is a schematic diagram of the galvanized sheet, sword grid, lifting plate and synchronization mechanism when the present invention is in a cutting state; Figure 12 This is a side view of the galvanized sheet, sword grid, lifting plate and synchronization mechanism when the present invention is in a cutting state; Figure 13 For the present invention Figure 11 Enlarged schematic diagram of area C in the middle; Figure 14For the present invention Figure 11 Schematic diagram from above after removing the galvanized sheet; Figure 15 For the present invention Figure 3 Enlarged schematic diagram of area B in the middle; Figure 16 This is a schematic diagram of the installation of the exhaust fan and the drive plate of the present invention; Figure 17 This is a schematic diagram of the installation of the hair dryer and the driving plate of the present invention; Figure 18 This is a schematic diagram of the cooperation between the cutting frame, the first flexible diaphragm and the second flexible diaphragm of the present invention; Figure 19 This is a side view of the cutting frame of the present invention cooperating with the first flexible diaphragm and the second flexible diaphragm.

[0020] In the figure, 1. galvanized sheet; 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; 10. second slide; 11. third slide; 12. fourth slide; 13. fifth slide; 14. sixth slide; 15. plasma nozzle; 16. exhaust pipe; 17. blower; 18. exhaust fan; 181. connection port; 19. first motor; 20. second motor; 21. third motor; 22. fourth motor; 23. support rod; 24. collecting trough; 25. sword fence; 251. expansion plate; 252. lower guide slide; 26. lifting plate; 261. passage groove; 262. upper guide slide; 27. cutting frame; 28. first flexible diaphragm; 29. ​​second flexible diaphragm; 30. Support trough rod; 31. Side support plate; 311. Upper slide; 312. Lower slide; 32. Bottom plate; 321. Slag discharge port; 33. Connector; 34. Positioning member; 341. Accommodating chamber; 342. Horizontal slide; 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 DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] The following is based on Figures 1-19 The present invention describes a plasma arc galvanized sheet CNC cutting device provided by an embodiment of the present invention.

[0024] See also Figure 1-Figure 7 , an embodiment of the present invention provides a technical solution: a plasma arc galvanized sheet CNC cutting device, comprising a bracket 2, and a sword grid 25, the sword grid 25 is arranged above the bracket 2, the length direction of the sword grid 25 is parallel to the X-axis, a plurality of sword grids 25 are provided, and the plurality of sword grids 25 are arranged at equal intervals along the Y-axis direction, and the sword grid 25 supports the galvanized sheet 1, and each sword grid 25 is provided with a lifting plate 26, which is also provided above the bracket 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, and the initial state here refers to the state when the top of the sword grid 25 supports the galvanized sheet 1, and a passage groove 261 is provided in the lifting plate 26, and the passage groove 261 is arranged along the length direction of the lifting plate 26 and penetrates the lifting plate 26 along the Z-axis direction. The sword grid 25 is located in the passage groove 261, so that the sword grid 25 can move along the Z-axis direction in the passage groove 261.

[0025] The cam 32 is fixed on the top of the support frame 21, and the cam 32 is fixed on the top of the support frame 21. The cam 32 is fixed on the top of the support frame 21, and the cam 32 is fixed on the bottom of the support frame 21.

[0026] Furthermore, a bottom plate 32 is provided between two adjacent groups of lifting plates 26 . The bottom plate 32 is fixed between two adjacent positioning members 34 , and the bottom of the bottom plate 32 is fixed to the bracket 2 via the support rod 23 .

[0027] The lifting plate 26 is provided with a pair of opposite lifting mechanisms, which can be understood as being provided between the bottom end of the lifting plate 26 and the bottom end of the sword fence 25. The opposite lifting mechanism is used to drive the sword fence 25 and the lifting plate 26 to move in opposite directions, so that the sword fence 25 can be retracted into the passage groove 261 of the lifting plate 26, and at the same time, the lifting plate 26 is moved upward, so that the top end of the lifting plate 26 moves to the position where the top end of the sword fence 25 is located in the initial state. Preferably, the distance between the inner wall of the passage groove 261 and the surface of the sword fence 25 is 2 to 5 mm. When slag accumulates on the top end of the sword fence 25, the slag can be removed by the lifting plate 26 during the process of being retracted into the passage groove 261, and the removed slag falls onto the bottom plate 32, thereby avoiding a large amount of slag generated during cutting from accumulating on the top end of the sword fence 25.

[0028] In addition, a plasma nozzle 15 is provided above the bracket 2, and a driving mechanism is configured to drive it to move in 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 bracket 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 bracket 2 along the X-axis direction, and the two ends of the first crossbeam 7 are respectively fixed on the first slide 9 and the second slide 10, and 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, and the first motor 19 can rotate by driving the gear and cooperate with the rack, so as to realize the movement of the plasma nozzle 15 in the Y-axis direction. A second motor 20 is provided on the fifth slide 13, and the second motor 20 can rotate by driving the gear and cooperate with the rack, so as to realize 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 achieved by a motor screw or a cylinder drive.

[0029] In addition, a synchronization mechanism is provided on both sides of the bracket 2, which is used to control the action of the opposite lifting mechanism so that the lifting plates 26 on both sides of the area where the plasma nozzle 15 is located move upward, and the lifting plates 26 move upward to the position where the top end is located when the sword grid 25 has not moved downward. At this time, an air duct is formed between the two groups of lifting plates 26 that move upward, the bottom 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 generated by the cutting is confined 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 existing technology, 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 tooth gaps of the sword grid 25.

[0030] In addition, ventilation components are provided on both sides of the bracket 2, which 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 provided on both sides of the sword grid 25, and 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.

[0031] 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 11 is slidably provided on the third guide rail 5, and a fourth slide 12 is slidably provided on the fourth guide rail 6. The exhaust fan 18 is installed on the third slide 11, and the blower 17 is installed on the fourth slide 12. The third slide 11 and the fourth slide 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.

[0032] See Figure 7-10A horizontal slide groove 342 is provided in the positioning member 34 , and the horizontal slide groove 342 passes through the upper and lower surfaces of the positioning member 34 , and the opposite lifting mechanism is provided in the horizontal slide groove 342 .

[0033] The above-mentioned opposing lifting mechanism includes a first slider 44, which is slidably arranged at one end of the horizontal slide groove 342, and the upper and lower ends of the first slider 44 are hinged to the first rod 46 and the second rod 47 respectively. It also includes a second slider 45, which is slidably arranged at the other end of the horizontal slide groove 342, and the upper and lower ends of the second slider 45 are hinged to the third rod 48 and the fourth rod 49 respectively. The lengths of the first rod 46, the second rod 47, the third rod 48 and the fourth rod 49 are all the same, wherein 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 hinge points of the two are close to or overlap each other, and the second rod 47 and the fourth rod 49 are both hinged to the bottom end of the sword fence 25, and the hinge points of the two are close to or overlap each other.

[0034] In addition, 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 slide groove 342. The first slider 44 and the second slider 45 are both 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 farthest away from each other in the initial state. When the first slider 44 and the second slider 45 overcome the force of the third spring 50 under the action of external force and approach each other, the lifting plate 26 can be pushed up and the sword grid 25 can be pushed down at the same time. When the external force disappears, the first slider 44 and the second slider 45 are reset to the initial state under the action of the third spring 50, thereby resetting the sword grid 25 and the lifting plate 26.

[0035] Optionally, the horizontal slide 342 may be composed of two parts, and the first slider 44 and the second slider 45 are respectively located in different parts. In this case, two third springs 50 may be provided, and the two third springs 50 are respectively located in different parts.

[0036] It should be noted that a plurality of opposing lifting mechanisms can be arranged in a single positioning member 34 to provide multi-point support for the sword fence 25 and the lifting plate 26, and two groups of positioning members 34 can be provided at a single sword fence 25, and the two groups of positioning members 34 are respectively located on both sides of the sword fence 25, thereby supporting both sides of the sword fence 25 and the lifting plate 26 at the same time, thereby improving the supporting force and support stability of both. At this time, an extension plate 251 can be fixed at the bottom end of the sword fence 25 to increase the installation area of ​​the bottom end of the sword fence 25.

[0037] In addition, in order to prevent the slag from contacting the opposing lifting mechanism, an upper accordion cover 35 can be set 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 set between the lower side of the positioning member 34 and the expansion plate 251.

[0038] See Figures 8-10 The above-mentioned opposite lifting mechanism also includes a first cable 41, the first cable 41 is passed through the positioning member 34, the first slider 44 is passed through by the first cable 41, and the second slider 45 is fixedly connected to the first cable 41, so that when the first cable 41 is pulled, the second slider 45 can be driven to move toward the side close to the first slider 44.

[0039] In addition, a second cable 42 is provided in 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, and pulling the second cable 42 can drive the first slider 44 to move toward the side close to the second slider 45. The first cable 41 and the second cable 42 can be steel cables or synthetic fiber ropes.

[0040] 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 external force, the first slider 44 and the second slider 45 can approach each other, and the ends of the first cable 41 and the second cable 42 that are affected by the external force pass through to the outside of the positioning member 34.

[0041] 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 accommodating cavity 341 is opened in the positioning member 34 near the end of the second cable 42, and the second spring 43 is located in the accommodating cavity 341. The second cable 42 passes through the second spring 43 and 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.

[0042] See Figure Figure 5 、 Figure 6 、 Figure 12-17The above-mentioned synchronization mechanism includes a transverse pull block 37, which is slidably arranged on the side support plate 31, and the sliding direction is parallel to the X-axis. Specifically, a guide rod 39 is fixed on one side of the transverse 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 transverse pull block 37 close to the side support plate 31. A transverse pull block 37 is provided on both sides of a single sword fence 25, one of which is fixedly connected to the first cable 41, and the other is fixedly connected to the second cable 42. When opposite lifting mechanisms are provided on both sides of the sword fence 25, each transverse pull block 37 is fixed to two first cables 41 or two second cables 42.

[0043] Furthermore, a roller 38 is installed on the lower side of the horizontal pull block 37 , and a certain gap is left between the roller 38 and the side support plate 31 .

[0044] In addition, a transverse pulling assembly is also included. A set of transverse pulling assemblies are respectively provided on both sides of a single sword fence 25. The transverse pulling assembly can be inserted into the gap between the roller 38 and the side support plate 31 to change the width of the gap from the initial state to the increased state. Specifically, Figure 16 and Figure 17 The horizontal pulling assembly near the exhaust fan 18 is fixed to one side of the third slide 11 through the folding plate 53, and the horizontal pulling assembly near the hair dryer 17 is fixed to one side of the fourth slide 12 through the folding plate 53, so that the horizontal pulling assembly moves synchronously with the plasma nozzle 15 on the Y axis.

[0045] See Figure 12-14 The above-mentioned cross-pull assembly is composed of a driving plate 52. A single set of cross-pull assemblies includes two driving plates 52 arranged parallel to the Y-axis direction. The two sides of a single driving plate 52 are beveled portions, and the width of the beveled portions is smaller than the width of the gap in the initial state. The middle part of the driving plate 52 is a straight portion, and the width of the straight portion is larger than the width of the gap in the initial state. It should be noted that the straight portion and the beveled portion here refer to the side of the driving plate 52 away from the side support plate 31, so that when the driving plate 52 moves, it can be inserted into the gap between the roller 38 and the side support plate 31 through the beveled portion and increase the distance between the roller 38 and the side support plate 31. The straight portion can make the distance between the roller 38 and the side support plate 31 remain unchanged at the maximum state. The reason for setting two driving plates 52 is to drive the two lifting plates 26 at the same time, so that the two lifting plates 26 located on both sides of the plasma nozzle 15 move up and contact the galvanized sheet 1, enclosing to form an air duct.

[0046] Furthermore, in order to ensure that there are always two lifting plates 26 in contact with the galvanized sheet 1 during the movement of the cross-pull 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 more than half the distance between two adjacent rollers 38, so that a single driving plate 52 can always be in contact with two adjacent rollers 38. When one roller 38 is located at the angled portion, the other roller 38 is located at the straight portion, so that a single driving plate 52 can always drive one lifting plate 2 during the movement. 6 is at the highest point. With the cooperation of the two driving plates 52, the two lifting plates 26 are at the highest point, thereby enclosing and forming an air duct. Since the plasma nozzle 15 moves synchronously with the horizontal pulling component, the projection of the cutting part of the galvanized sheet 1 in the Z-axis direction is always located in the air duct, and the lifting plate 26 located between the two lifting plates 26 at the highest point is not at the highest point, that is, the lifting plate 26 does not contact the galvanized sheet 1, thereby avoiding the plasma nozzle 15 directly contacting the lifting plate 26 during cutting, causing damage to the lifting plate 26.

[0047] See Figure 1 、 Figure 2 and Figure 5 In order to facilitate the collection of the slag that falls on the bottom plate 32, a slag discharge port 321 is opened on the side of the bottom plate 32 close to the exhaust fan 18, and a collection trough 24 is provided at the bottom end of the bottom plate 32 along the Y-axis direction. The collection trough 24 is used to receive the slag that falls from the slag discharge port 321. When the blower 17 and the exhaust fan 18 are working, the airflow will drive the slag to move on the bottom plate 32 toward the side of the exhaust fan 18, thereby falling into the collection trough 24 through the slag discharge port 321.

[0048] See Figure 1 、 Figure 2 、 Figure 18 and Figure 19 When the width of the galvanized sheet 1 is smaller than the length of the sword fence 25, part of the air duct on both sides of the length direction of the sword fence 25 cannot be blocked by the galvanized sheet 1, resulting in some smoke and dust escaping from both sides. In order to reduce the amount of smoke and dust escaping, support slot rods 30 are provided on both sides of the plasma nozzle 15 in parallel along the X-axis direction. A cutting frame 27 is slidably provided on the support slot 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 pass through the cutting frame 27 to cut the galvanized sheet 1. The cutting frame 27 also makes it convenient for the operator to observe the cutting status. Specifically, a second beam 8 is installed on one side of the first beam 7. Both ends of the second beam 8 are fixed to the first beam 7. The two support slot rods 30 are respectively installed on the lower ends of the first beam 7 and the second beam 8 through the mounting plate 58.

[0049] In addition, a first winding shaft 54 ​​and a second winding shaft 55 are respectively provided on both sides of the sword fence 25 in the length direction. The first winding shaft 54 ​​and the second winding shaft 55 are rotatably installed on the two 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.

[0050] In addition, a first guide roller 56 is provided on the side of the first winding shaft 54 ​​close to the cutting frame 27, and a second guide roller 57 is provided on the side of the second winding shaft 55 close to the cutting frame 27. The first guide roller 56 and the second guide roller 57 are located 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 above the air duct, thereby reducing the amount of smoke and dust escaping from both sides of the air duct.

[0051] Optional, combined Figure 4 and Figure 16 In order to facilitate the removal of smoke and dust above the cutting frame 27, an exhaust pipe 16 can be set near the plasma nozzle 15. Specifically, a sixth slide 14 is slidably set on the second crossbeam 8, and the exhaust pipe 16 is installed on the sixth slide 14. The sixth slide 14 is fixed to the fifth slide 13 by a connecting piece 33 so that the sixth slide 14 and the fifth slide 13 move synchronously. The exhaust pipe 16 is connected to the connecting port 181 on the exhaust fan 18 through a hose (not shown in the figure).

[0052] See Figure 18 and Figure 19 In 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, 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.

[0053] A linear position sensor is installed on one side of the plasma nozzle 15. The linear position sensor can be a magnetic scale. 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 according to 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.

[0054] When in use (working), the galvanized sheet 1 is placed above the bracket 2, and multiple sword grilles 25 support the galvanized sheet 1. When the driving device starts to move and cuts the galvanized sheet 1, it drives the cross-pull assembly to move, so that the cross-pull assembly is inserted into the gap between the roller 38 and the side support plate 31, driving the cross-pull block 37 to move. The cross-pull block 37 pulls the first cable 41 and the second cable 42 to activate the opposite lifting mechanism, thereby pushing the lifting plates 26 located on both sides of the plasma nozzle 15 to move up and contact the lower surface of the galvanized sheet 1. An air duct is formed between the two sets of lifting plates 26, the bottom plate 32 and the area to be cut of the galvanized sheet 1. Under the action of the blower 17 and the exhaust fan 18, the smoke and dust are taken away by the exhaust fan 18.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A plasma arc galvanized sheet CNC cutting device, comprising a bracket (2), characterized in that: Also includes: A sword fence (25), wherein the sword fence (25) is arranged above the bracket (2), and the length direction of the sword fence (25) is parallel to the X axis; A lifting plate (26), the lifting plate (26) is arranged above the bracket (2), a passage groove (261) is provided in the lifting plate (26), the sword fence (25) is located in the passage groove (261), and a bottom plate (32) is provided between two adjacent sets of lifting plates (26); An opposing lifting mechanism, the opposing lifting mechanism being arranged between the sword fence (25) and the lifting plate (26) and being used for driving the sword fence (25) and the lifting plate (26) to move in opposing directions; A plasma nozzle (15), the plasma nozzle (15) is located above the bracket (2) and is equipped with a driving mechanism to drive it to move in the X, Y and Z axes; A synchronization mechanism, the synchronization mechanism being located on both sides of the bracket (2) and being used to control the movement of the opposite lifting mechanism so that the lifting plates (26) on both sides of the area where the plasma nozzle (15) is located move upward, thereby forming an air duct between the two groups of lifting plates (26) that move upward, the bottom plate (32), and the area to be cut of the galvanized sheet; A ventilation component is connected to the air duct and is used to remove smoke and dust in the air duct.

2. The plasma arc galvanized sheet CNC cutting device according to claim 1, characterized in that: Side support plates (31) are fixedly provided on both sides above the bracket (2), and a positioning member (34) is fixedly provided between the two opposite side support plates (31); The sword grid (25) and the lifting plate (26) are both slidably mounted on the side support plate (31), and the connection end of the sword grid (25) and the side support plate (31) is located below the positioning member (34), and the connection end of the lifting plate (26) and the side support plate (31) is located above the positioning member (34).

3. The plasma arc galvanized sheet CNC cutting device according to claim 2, characterized in that: A horizontal slide groove (342) is provided in the positioning member (34), the horizontal slide groove (342) passes through the upper and lower surfaces of the positioning member (34), and the opposing lifting mechanism is provided in the horizontal slide groove (342); The opposing lifting mechanism comprises: A first slider (44), the first slider (44) being slidably disposed at one end of the horizontal slide groove (342), the upper end and the lower end of the first slider (44) being hinged to a first rod (46) and a second rod (47), respectively; a second slider (45), the second slider (45) being slidably disposed at the other end of the horizontal slide groove (342), the upper end and the lower end of the second slider (45) being hinged to a third rod (48) and a fourth rod (49), respectively; One end of each of the first rod (46) and the third rod (48) is hinged to the bottom end of the lifting plate (26), and the second rod (47) and the fourth rod (49) are hinged to the bottom end of the sword fence (25); A third spring (50) is provided 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.

4. The plasma arc galvanized sheet CNC cutting device according to claim 3, characterized in that: The opposing lifting mechanism also includes: A first cable (41), wherein the first cable (41) is passed through the positioning member (34), the first slider (44) is passed through by the first cable (41), and the second slider (45) is fixedly connected to the first cable (41), and pulling the first cable (41) can drive the second slider (45) to move toward a side close to the first slider (44); A second cable (42), the second cable (42) is passed through the positioning member (34), the second slider (45) is passed through by the second cable (42), the first slider (44) is fixedly connected to the second cable (42), and pulling the second cable (42) can drive the first slider (44) to move toward a side close to the second slider (45); A second spring (43) is provided at one end of each 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.

5. The plasma arc galvanized sheet CNC cutting device according to claim 4, characterized in that: The synchronization mechanism includes: A horizontal pull block (37), wherein the horizontal pull block (37) is slidably disposed on the side support plate (31), and the sliding direction is parallel to the X-axis. A horizontal pull block (37) is provided on both sides of a single sword grid (25), wherein 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); A roller (38), wherein the roller (38) is rotatably mounted on the lower side of the horizontal pull block (37), and a certain gap is left between the roller (38) and the side support plate (31); A set of transverse pull assemblies is provided on both sides of a single sword fence (25), and the transverse pull assemblies can be inserted into the gap between the roller (38) and the side support plate (31) to change the width of the gap from an initial state to an increased state.

6. The plasma arc galvanized sheet CNC cutting device according to claim 5, characterized in that: The transverse pulling assembly is composed of a driving plate (52), and a single set of transverse pulling assemblies includes two driving plates (52) arranged in parallel along the Y-axis direction; Both sides of the driving plate (52) are beveled portions, the width of the beveled portions is smaller than the width of the gap in the initial state, and the middle portion of the driving plate (52) is a straight portion, the width of the straight portion is larger than the width of the gap in the initial state; The length of the straight portion is not less than the distance between two adjacent rollers (38), and the length of the bevel portion is not greater than half the distance between two adjacent rollers (38).

7. The plasma arc galvanized sheet CNC cutting device according to claim 6, characterized in that: The ventilation assembly comprises a blower (17) and an exhaust fan (18), wherein the blower (17) and the exhaust fan (18) are respectively arranged on both sides of the sword fence (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.

8. The plasma arc galvanized sheet CNC cutting device according to claim 7, characterized in that: A slag discharge port (321) is provided on one side of the bottom plate (32) close to the exhaust fan (18), and a collecting trough (24) is provided at the bottom end of the bottom plate (32) along the Y-axis direction. The collecting trough (24) is used to receive slag falling from the slag discharge port (321).

9. The plasma arc galvanized sheet CNC cutting device according to claim 1, characterized in that: Supporting slot rods (30) are provided on both sides of the plasma nozzle (15) in parallel along the X-axis direction, a cutting frame (27) is slidably provided on the supporting slot rods (30), and the projection of the plasma nozzle (15) along the Z-axis is located within the cutting frame (27); A first winding shaft (54) and a second winding shaft (55) are respectively provided on both sides of the sword grid (25); 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); A first guide roller (56) is provided on a side of the first winding shaft (54) close to the cutting frame (27), and a second guide roller (57) is provided on a side of the second winding shaft (55) close to 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.

10. The plasma arc galvanized sheet CNC cutting device according to claim 9, 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), and the linear position sensor is used to obtain position information of the plasma nozzle (15) in the X-axis direction. A controller is also installed on the bracket (2), and 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).

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