Metal plate laser cutting equipment

Abstract

The invention relates to metal plate laser cutting equipment which comprises a bed body, a laser cutting assembly is arranged on the bed body, a plurality of supporting toothed plates are arranged on the bed body in an array mode, a slag collecting shell is arranged on the bed body, an unwinding shaft and a storage shaft are arranged on the two sides of the slag collecting shell respectively, and a winding motor for driving the storage shaft to rotate is arranged on the slag collecting shell. The unwinding shaft and the storage shaft are jointly and detachably connected with slag collecting cloth through a connecting assembly, an opening allowing the slag collecting cloth to pass through is formed in the slag collecting shell, and the slag collecting cloth is laid on the inner bottom wall of the slag collecting shell through the opening. The metal slag cleaning device has the effect of conveniently cleaning the metal slag in a concentrated manner.

Description

Technical Field

[0001] This application relates to the field of laser cutting technology, and in particular to a laser cutting device for metal sheets. Background Technology

[0002] Laser cutting technology, as a high-precision, high-efficiency, and non-contact advanced processing method, has been widely used in modern manufacturing, especially in the field of metal processing, where it has become one of the key processes for cutting metal sheets. It uses a high-energy-density laser beam to irradiate the workpiece, causing the irradiated area to rapidly melt, vaporize, or reach its ignition point. Simultaneously, a high-speed airflow removes the molten material, thus achieving precise cutting.

[0003] Chinese Patent CN120306837A discloses a laser cutting device for steel. The laser cutting device includes a machine tool, a cutting distance measuring mechanism above the machine tool, a laser cutting mechanism above the cutting distance measuring mechanism, a slag drop hole at the top of the machine tool, and a slag collection mechanism below the slag drop hole. The slag generated by the laser cutting head welding falls into the slag drawer through the slag drop hole, and then a third cylinder drives the slag pusher plate to push inward to clean up the waste slag.

[0004] However, the existing laser cutting equipment still has shortcomings in practical use: the molten metal slag produced by laser cutting of metal sheets is extremely hot. After the high-temperature molten slag falls directly into the molten slag drawer through the molten slag drop hole, it will come into contact with the inner wall of the drawer and solidify rapidly. The solidified metal slag is tightly bonded to the inner wall of the drawer. The existing technology relies on the third cylinder to drive the molten slag pusher plate to push and clean it. It is difficult to effectively peel off and clean the firmly adhered solidified metal slag. At this time, the operator still needs to stop the machine regularly to manually chisel and scrape for secondary cleaning. The operation process is time-consuming and laborious, and there are obvious shortcomings. Summary of the Invention

[0005] To facilitate the centralized cleaning of molten metal slag, this application provides a laser cutting device for metal sheets.

[0006] The laser cutting equipment for metal sheets provided in this application adopts the following technical solution: A laser cutting device for metal sheets includes a bed, on which a laser cutting assembly is mounted. Multiple support toothed plates are arranged in an array on the bed. A slag collection shell is mounted on the bed. An unwinding shaft and a take-up shaft are respectively mounted on both sides of the slag collection shell. A take-up motor that drives the take-up shaft to rotate is mounted on the slag collection shell. A slag collection cloth is detachably connected to both the unwinding shaft and the take-up shaft via a connecting assembly. An opening is provided on the slag collection shell for the slag collection cloth to pass through, and the slag collection cloth is laid on the inner bottom wall of the slag collection shell through the opening.

[0007] By adopting the above technical solution, before cutting, the metal sheet is placed on multiple support tooth plates, and one end of the slag collection cloth is connected to the unwinding shaft using the connecting component. Then, the slag collection cloth is wound around the unwinding shaft several times to allow for replacement. The slag collection cloth is then laid inside the slag collection shell through the opening. Finally, the slag collection cloth is connected to the storage shaft through the connecting component to complete the preparation work before cutting. During the cutting operation, the high-temperature molten metal slag generated by the cutting falls into the slag collection shell through the gap between adjacent support tooth plates. After contacting the surface of the slag collection cloth, it solidifies and adheres, thus avoiding the stubborn wall-sticking problem caused by direct contact between the molten slag and the inner wall of the slag collection shell. When the amount of molten metal slag adhering to the surface of the slag collection cloth reaches a certain amount, the winding motor drives the winding shaft to rotate. The winding shaft pulls the slag collection cloth to be wound onto the winding shaft, while the unwinding shaft releases the reserved amount of new slag collection cloth simultaneously, realizing the continuous and flat replacement of the slag collection cloth. In this way, the slag transfer can be completed without stopping the machine, reducing the labor intensity of the operators. Subsequently, only the slag collection cloth needs to be replaced to achieve centralized cleaning of the molten metal slag.

[0008] Optionally, the bottom wall of the slag collection shell is provided with multiple driving cylinders, and a heat-conducting plate is provided on the piston rod of the multiple driving cylinders. The bottom of the slag collection cloth is attached to the surface of the heat-conducting plate, and the surface is attached to the bottom wall of the opening. Multiple mounting shells are provided on the heat-conducting plate, and a cooling fin is provided inside each mounting shell. The cooling surface of the cooling fin is attached to the end face of the heat-conducting plate away from the slag collection cloth, and the heating surface faces the bottom wall of the slag collection shell. A heat dissipation vent is opened at the bottom of the slag collection shell, and a cooling fan is provided inside the heat dissipation vent.

[0009] By adopting the above technical solution, after the slag collection cloth is laid, the drive cylinder extends and pushes the heat-conducting plate upward, so that the slag collection cloth is tightly attached to the inner wall of the opening of the slag collection shell, ensuring that the slag collection cloth is flat and wrinkle-free, forming a stable slag receiving surface; during the cutting process, the cooling surface of the cooling plate transfers the cold energy to the slag collection cloth through the heat-conducting plate, keeping the slag collection cloth at a low temperature. When the high-temperature molten metal slag falls onto the surface of the slag collection cloth, the low-temperature slag collection cloth can make the molten slag cool down and solidify rapidly at the moment of contact with the slag collection cloth, reducing the possibility of the molten slag slowly penetrating the slag collection cloth due to cooling, thereby ensuring that the molten slag adheres to the surface of the slag collection cloth and does not fall off. The heat generated by the heating surface of the cooling plate is quickly discharged to the outside of the slag collection shell through the heat dissipation port under the action of the cooling fan, ensuring the stable cooling effect of the cooling plate.

[0010] Optionally, the unwinding shaft and the receiving shaft are provided with placement grooves for placing the slag-collecting cloth. The connecting assembly includes a pressure plate slidably connected in the placement groove. The bottom surface of the pressure plate is provided with multiple pressure protrusions, which tightly press the slag-collecting cloth against the side wall of the placement groove. The inner side wall of the placement groove is provided with a driving groove. A threaded column is rotatably connected inside the driving groove along the axial direction. Multiple threaded blocks are threadedly connected to the threaded column. A driving rod is hinged to each threaded block. The end of the driving rod away from the threaded block is hinged to the pressure block.

[0011] By adopting the above technical solution, during installation, the end of the slag-collecting cloth is placed into the placement groove, and then the threaded column is rotated. The threaded column drives multiple threaded blocks to move synchronously. The threaded blocks push the pressure plate to move towards the bottom of the placement groove through the drive rod, so that multiple pressure protrusions tightly abut against the surface of the slag-collecting cloth. The pressure and friction between the pressure protrusions and the slag-collecting cloth are used to firmly press and fix the end of the slag-collecting cloth. In this way, the slag-collecting cloth is connected to the unwinding shaft or the receiving shaft. At the same time, the threaded column is set along the axial direction, and its operating position avoids the winding area of ​​the slag-collecting cloth. When the worker rotates the threaded column to fix or disassemble, there will be no interference with the slag-collecting cloth during the winding process, ensuring the convenience of operation.

[0012] Optionally, the bed is provided with nozzles corresponding to the multiple support tooth plates one by one. The nozzles are located directly below the corresponding support tooth plates. Multiple nozzles are connected to the nozzles. The nozzles are inclined upward and face the side walls of the adjacent support tooth plates. A liquid storage box is provided on the inner side wall of the slag collection shell. The liquid storage box is made of thermally conductive material and stores a liquid phase change medium inside. The liquid storage box is connected to the multiple nozzles through an air supply pipe. A liquid supply tank is provided on the surface of the bed. The liquid supply tank is connected to the liquid storage box through a liquid supply pipe. A one-way liquid replenishment valve is provided on the liquid supply pipe.

[0013] By adopting the above technical solution, the high-temperature molten metal slag releases a large amount of latent heat of solidification when it comes into contact with the low-temperature slag collecting cloth and solidifies. Since the liquid storage box is made of a thermally conductive material, the heat is quickly transferred to the internal liquid phase change medium. After absorbing the heat, the liquid phase change medium vaporizes to generate high-temperature and high-pressure gas. The high-temperature and high-pressure gas is transported to the nozzle through the gas delivery pipe, and then directed by the nozzle to generate a high-temperature airflow acting on the side wall of the adjacent support tooth plate. The high-temperature and high-pressure airflow peels off the residual slag adhering to the side wall of the support tooth plate by its own pressure, and can also heat and dilute the incompletely solidified residual slag, reducing its viscosity. This process allows the molten slag to detach from the support toothed plate and fall smoothly onto the slag collection cloth below, thereby reducing the possibility of slag residue remaining on the support toothed plate and preventing the slag from affecting the support stability of the plate. When it is necessary to replenish the phase change medium, the one-way liquid replenishment valve is activated, allowing the phase change medium inside the liquid supply tank to flow along the liquid supply pipe into the liquid storage box, ensuring the continuous and stable generation of high-temperature and high-pressure gas. In this way, the residual slag on the support toothed plate is cleaned through the latent heat of solidification, without the need for additional driving gas source and heating device. This fully recovers and utilizes the waste heat released by the solidification of molten slag, achieving the effect of energy saving and consumption reduction.

[0014] Optionally, the laser cutting assembly includes a bracket slidably mounted on the bed, a connecting plate slidably mounted on the bracket, a connecting shell slidably mounted on the connecting plate, a laser cutting gun for cutting disposed inside the connecting shell, a Y-axis drive assembly for driving the bracket to move along the length direction of the bed, an X-axis drive assembly and a Z-axis drive assembly for driving the connecting plate to move along the length direction of the bracket, and the Z-axis drive assembly for driving the connecting shell to move vertically.

[0015] By adopting the above technical solution, the Y-axis drive assembly can drive the support to move stably along the length of the bed, the X-axis drive assembly can drive the connecting plate to adjust flexibly along the length of the support, and the Z-axis drive assembly can realize the lifting and lowering action of the connecting shell in the vertical direction. The three work together to form an XYZ three-axis linkage drive structure, thereby adjusting the horizontal position and vertical height of the laser cutting gun, ensuring that the laser cutting gun can always maintain the best cutting distance and angle, and adapt to the cutting needs of metal plates of different specifications.

[0016] Optionally, the Y-axis drive assembly includes a Y-axis guide rail disposed on the surface of the bed, support plates that slide and cooperate with the Y-axis guide rail on opposite sides of the bracket, a Y-axis motor disposed on the support plate, a Y-axis gear disposed on the output shaft of the Y-axis motor, and a Y-axis rack plate that meshes with the Y-axis gear disposed on the surface of the bed.

[0017] By adopting the above technical solution, the Y-axis motor rotates the Y-axis gear. With the Y-axis rack plate set, the Y-axis gear will roll along the Y-axis rack plate when rotating, thereby driving the support plates on both sides of the bracket to slide smoothly along the Y-axis guide rail, and thus driving the bracket as a whole to move along the length of the bed. Moreover, the meshing transmission of the gear and rack has the advantage of stable transmission, which can effectively reduce the problem of shaking during the movement of the bracket and ensure the stability of the laser cutting gun moving along the length of the bed.

[0018] Optionally, the X-axis drive assembly includes an X-axis guide rail arranged along the length direction of the bracket, a connecting plate slidably disposed on the X-axis guide rail, an X-axis motor disposed on the connecting plate, an X-axis gear disposed on the output shaft of the X-axis motor, and an X-axis rack plate meshing with the X-axis gear along the length direction of the bracket.

[0019] By adopting the above technical solution, the X-axis motor and X-axis gear rotate. With the X-axis rack plate set, the X-axis gear will roll along the X-axis rack plate when rotating, thereby driving the connecting plate carrying the laser cutting head to slide smoothly along the X-circumferential guide rail. Moreover, the meshing transmission of the gear and rack has the advantage of stable transmission, which can effectively reduce the problem of shaking during the movement of the connecting plate and ensure the stability of the laser cutting gun moving along the length of the bracket.

[0020] Optionally, the Z-axis drive assembly includes a Z-axis guide rail disposed on the connecting plate, the connecting shell being slidably connected to the Z-axis guide rail, a Z-axis motor disposed on the connecting plate, a Z-axis gear disposed on the output shaft of the Z-axis motor, and a Z-axis rack plate disposed on the connecting shell that meshes with the Z-axis gear.

[0021] By adopting the above technical solution, the Z-axis motor and Z-axis gear rotate, and when the Z-axis gear rotates, it drives the Z-axis rack plate to move in the vertical direction, which in turn drives the connecting shell and the laser cutting head to move in the vertical direction, thereby adjusting the distance between the laser cutting head and the plate.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses a connecting assembly to detachably install the slag-collecting cloth on the unwinding shaft and the receiving shaft. The slag-collecting cloth is laid inside the slag-collecting shell. After the high-temperature molten metal slag comes into contact with the surface of the slag-collecting cloth, it solidifies and adheres, avoiding the stubborn wall-sticking problem caused by the molten slag directly contacting the inner wall of the slag-collecting shell. When the amount of molten metal slag adhering to the surface of the slag-collecting cloth reaches a certain amount, the winding motor drives the receiving shaft to rotate. The receiving shaft pulls the slag and winds it up. At the same time, the unwinding shaft releases the reserved amount of new slag-collecting cloth, realizing the continuous and flat replacement of the slag-collecting cloth. In this way, the slag transfer can be completed without stopping the machine, reducing the labor intensity of the operators. Subsequently, only the slag-collecting cloth needs to be replaced to achieve centralized cleaning of molten metal slag. 2. This application sets up a cooling plate and a heat-conducting plate. The cooling surface of the cooling plate transfers the cold energy to the slag collecting cloth through the heat-conducting plate, keeping the slag collecting cloth at a low temperature. When the high-temperature molten metal slag falls onto the surface of the slag collecting cloth, the low-temperature slag collecting cloth can make the molten slag cool down and solidify rapidly at the moment of contact with the slag collecting cloth, reducing the possibility of the molten slag slowly penetrating the slag collecting cloth due to cooling, thereby ensuring that the molten slag adheres to the surface of the slag collecting cloth and does not fall off. 3. This application, by setting up a phase change medium and a nozzle, allows high-temperature molten metal slag to release a large amount of latent heat of solidification when it comes into contact with the low-temperature slag collecting cloth and solidifies. The phase change medium absorbs the heat and vaporizes to generate high-temperature and high-pressure gas. The high-temperature and high-pressure gas is transported to the nozzle through the gas delivery pipe, and then directed by the nozzle to generate a high-temperature airflow that acts on the side wall of the adjacent support tooth plate. The high-temperature and high-pressure airflow peels off the residual slag adhering to the side wall of the support tooth plate by its own pressure, allowing it to fall smoothly onto the slag collecting cloth below, thereby reducing the possibility of slag remaining on the support tooth plate and preventing the slag from affecting the support stability of the plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this application.

[0024] Figure 2 This is a schematic diagram of the structure of the X-axis drive component in an embodiment of this application.

[0025] Figure 3 This is an exploded view of the connection plate and the connection shell in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of the bed and slag collection shell in the embodiments of this application.

[0027] Figure 5 This is a cross-sectional view of the slag collection shell in an embodiment of this application.

[0028] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Bed; 2. Laser cutting assembly; 21. Bracket; 22. Connecting plate; 23. Connecting shell; 24. Laser cutting head; 3. Support plate; 4. Y-axis drive assembly; 41. Y-axis guide rail; 42. Support plate; 43. Y-axis motor; 44. Y-axis gear; 45. Y-axis rack plate; 5. Z-axis drive assembly; 51. Z-axis guide rail; 52. Z-axis motor; 53. Z-axis gear; 54. Z-axis rack plate; 6. X-axis drive assembly; 61. X-axis guide rail; 62. X-axis motor; 63. X-axis gear; 64. X-axis rack plate; 7. Collection 71. Slag shell; 72. Unwinding shaft; 73. Rewinding shaft; 74. Slag collection cloth; 75. Opening; 76. Heat dissipation vent; 8. Connecting assembly; 81. Pressure plate; 82. Pressing protrusion; 83. Threaded column; 84. Threaded block; 85. Drive rod; 9. Placement slot; 91. Drive slot; 10. Drive cylinder; 11. Heat-conducting plate; 111. Mounting shell; 112. Cooling chip; 113. Cooling fan; 12. Spray pipe; 121. Nozzle; 13. Liquid storage box; 131. Phase change medium; 14. Liquid supply tank; 141. Liquid supply pipe; 142. One-way replenishment valve. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a laser cutting device for metal sheets.

[0032] Reference Figure 1 A laser cutting device for metal sheets includes a bed 1, on which a laser cutting assembly 2 is installed. Specifically, the laser cutting assembly 2 includes a bracket 21 slidably connected to the bed 1, the bracket 21 being parallel to the width direction of the bed 1, a connecting plate 22 slidably connected to the bracket 21 along the length direction, a connecting shell 23 slidably connected to the connecting plate 22 along the vertical direction, and a laser cutting head 24 for cutting is installed on the connecting shell 23. The specific composition and operating principle of the laser cutting head 24 are existing technologies and will not be described in detail in this embodiment.

[0033] Reference Figure 1 The bed 1 has multiple support tooth plates 3 evenly installed at equal intervals along its length. The support tooth plates 3 are set parallel to the width direction of the bed 1. During cutting, the worker places the plate to be cut on the surface of the support tooth plate 3, and the gap between two support tooth plates 3 forms a channel for the molten metal slag to fall.

[0034] Reference Figure 1 and Figure 2The bracket 21 is provided with a Y-axis drive assembly 4. The Y-axis drive assembly 4 includes a Y-axis guide rail 41 fixedly installed on the surface of the bed 1. The Y-axis guide rail 41 is parallel to the length direction of the bed 1. The bracket 21 is fixedly connected to the opposite sides along the length direction with support plates 42 that slide with the Y-axis guide rail 41. A Y-axis motor 43 is installed on the upper surface of the support plate 42. A Y-axis gear 44 is fixedly connected to the output shaft of the Y-axis motor 43. A Y-axis rack plate 45 that meshes with the Y-axis gear 44 is installed along the length direction of the bed 1.

[0035] When it is necessary to adjust the position of the laser cutting head 24 in the length direction of the plate, the Y-axis motor 43 drives the Y-axis gear 44 to rotate. With the Y-axis rack plate 45 set, the Y-axis gear 44 will roll along the Y-axis rack plate 45 when rotating, thereby driving the support plate 42 to slide smoothly along the Y-axis guide rail 41, and driving the bracket 21 to move along the length direction of the bed 1. At this time, the laser cutting head 24 will move along the length direction of the plate until it reaches the target cutting position.

[0036] Reference Figure 2 and Figure 3 The bracket 21 is provided with a Z-axis drive assembly 5, which includes a Z-axis guide rail 51 mounted vertically on the connecting plate 22, a connecting shell 23 slidably mounted on the Z-axis guide rail 51, a Z-axis motor 52 fixedly mounted on the connecting plate 22, a Z-axis gear 53 coaxially fixedly connected to the output shaft of the Z-axis motor 52, and a Z-axis rack plate 54 meshing with the Z-axis gear 53 mounted on the connecting shell 23.

[0037] When it is necessary to adjust the distance between the laser cutting head 24 and the surface of the plate, the Z-axis motor 52 drives the Z-axis gear 53 to rotate. Under the guidance of the Z-axis guide rail 51, the rotation of the Z-axis gear 53 will drive the Z-axis rack plate 54 to move in the vertical direction, thereby driving the connecting shell 23 and the laser cutting head 24 to move in the vertical direction until the target cutting position is reached.

[0038] Reference Figure 2 and Figure 3 The bracket 21 is provided with an X-axis drive assembly 6, which includes an X-axis guide rail 61 installed along the length of the bracket 21, a connecting plate 22 slidably connected to the X-axis guide rail 61, an X-axis motor 62 installed on the connecting plate 22, an X-axis gear 63 coaxially fixedly connected to the output shaft of the X-axis motor 62, and an X-axis rack plate 64 that meshes with the X-axis gear 63 is installed along the length of the bracket 21.

[0039] During the cutting process, the X-axis motor 62 drives the X-axis gear 63 to rotate. When the X-axis gear 63 rotates, it will roll along the X-axis rack plate 64, thereby driving the connecting plate 22 to slide along the length direction of the bracket 21. The connecting plate 22 drives the laser cutting head 24 to cut along the width direction of the plate, thereby obtaining the plate of the target width. Moreover, the meshing transmission of the gear and rack has the advantage of stable transmission, which can effectively reduce the problem of shaking during the movement of the laser cutting head 24 and ensure the stability of the laser cutting gun during cutting.

[0040] Reference Figure 4 and Figure 5 A slag collection shell 7 is installed below the support toothed plate 3 in the bed body 1. The slag collection shell 7 is U-shaped. Rotating frames (not shown in the figure) are installed on both sides of the slag collection shell 7 along the length direction. A winding shaft 71 and a receiving shaft 72 are rotatably connected to the two rotating frames respectively. A winding motor 73 that drives the receiving shaft 72 to rotate is installed on the rotating frames. A slag collection cloth 74 is detachably connected to the unwinding shaft 71 and the receiving shaft 72 through a connecting component 8. In this embodiment, the slag collection cloth 74 is a high-temperature resistant fiberglass cloth. Openings 75 are opened on both sides of the slag collection shell 7 along the length direction. The slag collection cloth 74 is laid on the inner bottom wall of the slag collection shell 7 through the openings 75. The openings 75 are located above the unwinding shaft 71 and the receiving shaft 72 to ensure the adhesion between the slag collection cloth 74 and the bottom surface of the slag collection shell 7.

[0041] Reference Figure 5 and Figure 6 The unwinding shaft 71 and the receiving shaft 72 are provided with placement grooves 9 for placing the slag-collecting cloth 74. The placement grooves 9 are arranged parallel to the axes of the unwinding shaft 71 and the receiving shaft 72. The connecting assembly 8 includes a pressure plate 81 that is slidably connected in the placement groove 9. The pressure plate 81 has multiple pressure protrusions 82 integrally formed on the surface of the slag-collecting cloth 74. The pressure protrusions 82 press the slag-collecting cloth 74 tightly against the side wall of the placement groove 9. The inner side wall of the placement groove 9 is provided with interconnected drive grooves 91. The drive groove 91 is rotatably connected to a threaded post 83 along the axis of the unwinding shaft 71 and the receiving shaft 72. The end of the threaded post 83 extends out of the drive groove 91 and is coaxially fixedly connected to a knob (not shown in the figure) that is easy for the worker to rotate. The threaded post 83 is arranged along the axis, and its operating position avoids the winding area of ​​the slag-collecting cloth 74, so that the worker can rotate the threaded post 83 to perform fixing or disassembly operations.

[0042] Reference Figure 5 and Figure 6 The threaded column 83 is threaded with multiple threaded blocks 84. The threaded blocks 84 slide along the axial direction inside the drive groove 91 through the cooperation of the sliding block and the sliding groove. Each threaded block 84 is hinged with a drive rod 85. The end of the drive rod 85 away from the threaded block 84 is hinged to the pressure block.

[0043] Before cutting, the worker connects one end of the slag-collecting cloth 74 to the unwinding shaft 71 through the connecting component 8. The specific process is as follows: the end of the slag-collecting cloth 74 is placed into the placement groove 9, and then the threaded column 83 is rotated. The threaded column 83 drives multiple threaded blocks 84 to move along the axial direction. The threaded blocks 84 push the pressure plate 81 to move towards the bottom of the placement groove 9 through the drive rod 85, so that multiple pressure protrusions 82 tightly abut against the surface of the slag-collecting cloth 74. The pressure between the pressure protrusions 82 and the slag-collecting cloth 74 is used to firmly secure the end of the slag-collecting cloth 74 inside the placement groove 9. After the connection is completed, the slag-collecting cloth 74 is wound around the unwinding shaft 71 several times to leave room for replacement. Then the slag-collecting cloth 74 is laid inside the slag-collecting shell 7 through the opening 75. Finally, the slag-collecting cloth 74 is connected to the storage shaft 72 through the connecting component 8, completing the preparation work before cutting. During the cutting operation, the high-temperature molten metal slag generated by the cutting falls into the slag collection shell 7 through the gap between adjacent support tooth plates 3. After contacting the surface of the slag collection cloth 74, it solidifies and adheres, thus avoiding the stubborn wall-sticking problem caused by the molten slag directly contacting the inner wall of the slag collection shell 7. When the amount of molten metal slag adhering to the surface of the slag collection cloth 74 reaches a certain amount, the winding motor 73 drives the receiving shaft 72 to rotate. The receiving shaft 72 pulls the slag collection cloth to be wound onto the receiving shaft 72. At the same time, the unwinding shaft 71 releases the reserved amount of new slag collection cloth 74, realizing the continuous and flat replacement of the slag collection cloth 74. In this way, the slag transfer can be completed without stopping the machine, reducing the labor intensity of the operators. After the slag collection cloth 74 is used up, the worker only needs to rotate the threaded column 83 in the opposite direction to make the pressure protrusion 82 disengage from the slag collection cloth 74. Then the slag collection cloth 74 can be separated from the unwinding shaft 71 and the storage shaft 72. Finally, the worker can pull the slag collection cloth 74 out of the opening 75 to achieve centralized cleaning of the slag.

[0044] Reference Figure 4 and Figure 5 Each of the four corners of the bottom wall of the slag collection shell 7 is equipped with a drive cylinder 10. A heat-conducting plate 11 is fixedly connected to the piston rod of the four drive cylinders 10. The heat-conducting plate 11 is made of a material with a high thermal conductivity. The slag collection cloth 74 is attached to the surface of the heat-conducting plate 11 after passing through the opening 75. When the piston rod of the drive cylinder 10 extends, the slag collection cloth 74 is attached to the inner wall of the opening 75. Before the cutting operation, the piston rod of the drive cylinder 10 pushes the heat-conducting plate 11 upward, so that the slag collection cloth 74 is tightly attached to the inner wall of the opening 75, ensuring that the slag collection cloth 74 is flat and wrinkle-free, forming a stable slag collection receiving surface. When the slag collection cloth 74 is replaced, the drive cylinder 10 drives the heat-conducting plate 11 downward by retracting the piston rod, providing sufficient space for the winding and unwinding of the slag collection cloth 74, making the replacement process of the slag collection cloth 74 smooth and efficient.

[0045] Reference Figure 4 and Figure 5Multiple mounting shells 111 are arranged in an array on the heat-conducting plate 11. Each mounting shell 111 contains a cooling chip 112. In this embodiment, the cooling chip 112 is a semiconductor cooling chip 112. The cooling surface of the cooling chip 112 is attached to the end face of the heat-conducting plate 11 away from the slag collection cloth 74, and the heating surface faces the inner bottom wall of the slag collection shell 7. A heat dissipation port 76 is provided at the bottom of the slag collection shell 7, and a cooling fan 113 for heat dissipation is installed at the heat dissipation port 76.

[0046] During the cutting process, the heat generated by the heating surface of the cooling chip 112 is quickly discharged to the outside of the slag collection shell 7 through the heat dissipation port 76 under the action of the cooling fan 113, ensuring the stable cooling effect of the cooling chip 112. The cooling surface transfers the cold energy to the slag collection cloth 74 through the heat conduction plate 11, keeping the slag collection cloth 74 at a low temperature. When the high-temperature molten metal slag falls onto the surface of the slag collection cloth 74, the low-temperature slag collection cloth 74 can make the molten slag cool down and solidify rapidly at the moment of contact with the slag collection cloth 74, avoiding the problem of slow cooling of the molten slag, significantly enhancing the adhesion between the molten slag and the slag collection cloth 74, ensuring that the molten slag adheres to the surface of the slag collection cloth 74 and does not fall off.

[0047] Reference Figure 4 and Figure 5 The bed 1 is equipped with nozzles 12 that correspond one-to-one with multiple support tooth plates 3. The nozzles 12 are parallel to the length direction of the support tooth plates 3 and are located directly below the corresponding support tooth plates 3. Multiple nozzles 121 are connected to the nozzles 12 along the length direction. The nozzles 121 are divided into two groups. Both groups of nozzles 121 are inclined upward and facing the side wall of the adjacent support tooth plate 3. A liquid storage box 13 is installed in the area on the inner side wall of the slag collection shell 7 between the bottom of the nozzles 121 and above the slag collection cloth 74. The liquid storage box 13 is made of thermally conductive material and stores a liquid phase change medium 131 inside. The upper surface of the liquid storage box 13 is connected to multiple nozzles 12 through an air supply pipe. The air supply pipe (not shown in the figure) is located on opposite sides of the nozzles 12 along the length direction.

[0048] When the high-temperature molten metal slag comes into contact with the low-temperature slag collecting cloth 74 and solidifies, it releases a large amount of latent heat of solidification. Since the liquid storage box 13 is made of a heat-conducting material, the heat is quickly transferred to the internal liquid phase change medium 131. After absorbing the heat, the liquid phase change medium 131 vaporizes to generate high-temperature and high-pressure gas. The high-temperature and high-pressure gas is transported to the nozzle 12 through the gas delivery pipe, and then directed by the nozzle 121 to generate a high-temperature airflow acting on the side wall of the adjacent support tooth plate 3. The high-temperature and high-pressure airflow peels off the residual slag adhering to the side wall of the support tooth plate 3 by its own pressure, and can also heat and dilute the residual slag that has not been completely solidified, reducing its viscosity, so that the molten slag body detaches from the support tooth plate 3 and falls onto the slag collecting cloth 74 below, thereby reducing the possibility of slag remaining on the support tooth plate 3, and thus preventing the slag body from affecting the support stability of the support tooth plate 3 on the plate. Moreover, the whole process is driven and heated by the latent heat of solidification, without the need for additional driving gas source and heating device, fully recovering and utilizing the waste heat released by the solidification of molten slag, achieving the effect of energy saving and consumption reduction.

[0049] Reference Figure 4 and Figure 5 A liquid supply tank 14 is installed on the outer surface of the bed body 1. The bottom of the liquid supply tank 14 is connected to the inside of the liquid storage box 13 through a liquid supply pipe 141. A one-way replenishment valve 142 is installed on the liquid supply pipe 141. When it is necessary to replenish the phase change medium 131, the one-way replenishment valve 142 is activated, so that the phase change medium 131 inside the liquid supply tank 14 flows along the liquid supply pipe 141 to the inside of the liquid storage box 13, ensuring the continuous and stable generation of high temperature and high pressure gas.

[0050] The implementation principle of a metal sheet laser cutting device according to an embodiment of this application is as follows: Before cutting, the metal sheet is placed on multiple support tooth plates 3, and one end of the slag collection cloth 74 is connected to the unwinding shaft 71 using the connecting component 8. Then, the slag collection cloth 74 is wound around the unwinding shaft 71 several times to leave room for replacement. Then, the slag collection cloth 74 is laid inside the slag collection shell 7 through the opening 75. Finally, the slag collection cloth 74 is connected to the receiving shaft 72 through the connecting component 8 to complete the preparation work before cutting. During the cutting operation, the high-temperature molten metal slag generated by the cutting falls into the slag collection shell 7 through the gap between adjacent support tooth plates 3. After contacting the surface of the slag collection cloth 74, it solidifies and adheres, thus avoiding the stubborn wall-sticking problem caused by the molten slag directly contacting the inner wall of the slag collection shell 7. When the amount of molten metal slag adhering to the surface of the slag collection cloth 74 reaches a certain amount, the winding motor 73 drives the receiving shaft 72 to rotate. The receiving shaft 72 pulls the slag collection cloth to be wound onto the receiving shaft 72. At the same time, the unwinding shaft 71 releases the reserved amount of new slag collection cloth 74, realizing the continuous and flat replacement of the slag collection cloth 74. In this way, the slag transfer can be completed without stopping the machine, reducing the labor intensity of the operators. Subsequently, only the slag collection cloth 74 needs to be replaced to achieve centralized cleaning of the molten metal slag.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser cutting device for metal sheets, characterized in that, The device includes a bed (1), on which a laser cutting assembly (2) is provided. Multiple support toothed plates (3) are arranged in an array on the bed (1). A slag collection shell (7) is provided on the bed (1). An unwinding shaft (71) and a receiving shaft (72) are respectively provided on both sides of the slag collection shell (7). A winding motor (73) is provided on the slag collection shell (7) to drive the receiving shaft (72) to rotate. A slag collection cloth (74) is detachably connected to the unwinding shaft (71) and the receiving shaft (72) through a connecting assembly (8). An opening (75) is provided on the slag collection shell (7) for the slag collection cloth (74) to pass through. The slag collection cloth (74) is laid on the inner bottom wall of the slag collection shell (7) through the opening (75).

2. The metal sheet laser cutting equipment according to claim 1, characterized in that, The bottom wall of the slag collection shell (7) is provided with multiple driving cylinders (10), and the piston rods of the multiple driving cylinders (10) are provided with a heat-conducting plate (11). The bottom of the slag collection cloth (74) is attached to the surface of the heat-conducting plate (11), and the surface is attached to the bottom wall of the opening (75). Multiple mounting shells (111) are provided on the heat-conducting plate (11), and each mounting shell (111) is provided with a cooling chip (112). The cooling surface of the cooling chip (112) is attached to the end face of the heat-conducting plate (11) away from the slag collection cloth (74), and the heating surface faces the bottom wall of the slag collection shell (7). A heat dissipation port (76) is opened at the bottom of the slag collection shell (7), and a cooling fan (113) is provided in the heat dissipation port (76).

3. The laser cutting equipment for metal sheets according to claim 1, characterized in that, The unwinding shaft (71) and the receiving shaft (72) are provided with placement grooves (9) for placing the slag collection cloth (74). The connecting assembly (8) includes a pressure plate (81) slidably connected in the placement groove (9). The bottom surface of the pressure plate (81) is provided with a plurality of pressure protrusions (82). The pressure protrusions (82) tightly abut the slag collection cloth (74) against the side wall of the placement groove (9). The inner side wall of the placement groove (9) is provided with a driving groove (91). The drive groove (91) is rotatably connected to a threaded column (83) along the axial direction. A plurality of threaded blocks (84) are threadedly connected to the threaded column (83). Each threaded block (84) is hinged with a driving rod (85). The end of the driving rod (85) away from the threaded block (84) is hinged to the pressure block.

4. The metal sheet laser cutting equipment according to claim 2, characterized in that, The bed (1) is provided with nozzles (12) corresponding to the multiple support tooth plates (3). The nozzles (12) are located directly below the corresponding support tooth plates (3). Multiple nozzles (121) are connected to the nozzles (12). The nozzles (121) are inclined upward and face the side wall of the adjacent support tooth plate (3). A liquid storage box (13) is provided on the inner side wall of the slag collection shell (7). The liquid storage box (13) is made of thermally conductive material and stores liquid phase change medium (131) inside. The liquid storage box (13) is connected to the multiple nozzles (12) through an air supply pipe. A liquid supply tank (14) is provided on the surface of the bed (1). The liquid supply tank (14) is connected to the liquid storage box (13) through a liquid supply pipe (141). A one-way liquid replenishment valve (142) is provided on the liquid supply pipe (141).

5. The metal sheet laser cutting equipment according to claim 1, characterized in that, The laser cutting assembly (2) includes a bracket (21) slidably mounted on the bed (1), a connecting plate (22) slidably mounted on the bracket (21), a connecting shell (23) slidably mounted on the connecting plate (22), a laser cutting gun for cutting is disposed inside the connecting shell (23), a Y-axis drive assembly (4) is disposed on the bed (1) to drive the bracket (21) to move along the length direction of the bed (1), an X-axis drive assembly (6) and a Z-axis drive assembly (5) are disposed on the bracket (21), the X-axis drive assembly (6) drives the connecting plate (22) to move along the length direction of the bracket (21), and the Z-axis drive assembly (5) drives the connecting shell (23) to move along the vertical direction.

6. The laser cutting equipment for metal sheets according to claim 5, characterized in that, The Y-axis drive assembly (4) includes a Y-axis guide rail (41) disposed on the surface of the bed (1), and support plates (42) that slide in cooperation with the Y-axis guide rail (41) are disposed on opposite sides of the bracket (21). A Y-axis motor (43) is disposed on the support plate (42), and a Y-axis gear (44) is disposed on the output shaft of the Y-axis motor (43). A Y-axis rack plate (45) that meshes with the Y-axis gear (44) is disposed on the surface of the bed (1).

7. A laser cutting device for metal sheets according to claim 5, characterized in that, The X-axis drive assembly (6) includes an X-axis guide rail (61) arranged along the length direction of the bracket (21), a connecting plate (22) slidably arranged on the X-axis guide rail, an X-axis motor (62) arranged on the connecting plate (22), an X-axis gear (63) arranged on the output shaft of the X-axis motor (62), and an X-axis rack plate (64) that meshes with the X-axis gear (63) arranged along the length direction of the bracket (21).

8. A laser cutting device for metal sheets according to claim 5, characterized in that, The Z-axis drive assembly (5) includes a Z-axis guide rail (51) disposed on the connecting plate (22), the connecting shell (23) is slidably connected to the Z-axis guide rail (51), a Z-axis motor (52) is disposed on the connecting plate (22), a Z-axis gear (53) is disposed on the output shaft of the Z-axis motor (52), and a Z-axis rack plate (54) is disposed on the connecting shell (23) that meshes with the Z-axis gear (53).

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