A dual-platform switching high-precision positioning CNC laser cutting machine

Abstract

This invention discloses a dual-platform exchange high-precision positioning CNC laser cutting machine, relating to the field of laser cutting machine technology. It includes a cutting head protection mechanism and a device bracket installed on the outside of the cutting head protection mechanism. A dual-platform exchange mechanism is provided on one side of the cutting head protection mechanism, and a limiting mounting bracket is provided inside the dual-platform exchange mechanism. The cutting head protection mechanism includes a dust suction ring, with a limiting plate fixedly installed on the outer bottom of the dust suction ring. An inner baffle is fixedly installed inside the dust suction ring, and a closed sliding plate is fixedly installed inside the inner baffle. Initial protection is provided by the limiting plate at the bottom of the dust suction ring. When the laser cutting head continues to descend, upon collision or compression with the workpiece or the top and bottom support protrusions, the limiting plate drives the closed sliding plate and the laser cutting head to rise. This upward avoidance method prevents collision damage to the laser cutting head.

Description

Technical Field

[0001] This invention relates to the field of laser cutting machine technology, specifically to a dual-platform exchange high-precision positioning CNC laser cutting machine. Background Technology

[0002] A laser cutting machine uses a laser beam emitted from a laser source. This beam is focused into a high-power-density laser beam through an optical path system. The laser beam irradiates the workpiece surface, causing the workpiece to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, a kerf is formed in the material, thus achieving the cutting purpose. Laser cutting uses an invisible laser beam instead of a traditional mechanical blade, offering advantages such as high precision, fast cutting speed, smooth cuts, and low processing costs. It is gradually improving upon or replacing traditional metal cutting equipment. The mechanical parts of the laser cutter head do not contact the workpiece, preventing scratches on the workpiece surface during operation. Laser cutting is fast, producing smooth and flat cuts that generally require no further processing.

[0003] Publication No. CN213105118U discloses a dual-platform exchange high-precision positioning CNC laser cutting machine. The bullet-head positioning device of this machine effectively ensures the repeatability of the positioning accuracy after the reciprocating motion of the worktable. Through the cooperation of the cylindrical tapered pins and tapered pin holes of the worktable in the two bullet-head positioning devices, the cylindrical tapered pins at the two positions can accurately position the worktable, ensuring that the repeatability of the exchanged worktable is less than or equal to 0.05 mm, effectively improving the processing accuracy of the laser cutting machine. However, this patent still has the following problems in actual use: Although the aforementioned patented equipment can accurately position the worktable through the cooperation of the cylindrical conical pins and conical pin holes of the worktable with the two bullet-shaped positioning devices, the system should prohibit the exchange if the cutting head does not return to the origin or fails to reset during the laser cutting process. However, if the interlocking logic is incorrect or the sensor malfunctions, the cutting head may collide with the worktable, resulting in damage to the laser cutting head and affecting the subsequent laser cutting accuracy.

[0004] Therefore, it is necessary to propose an improved dual-platform exchange high-precision positioning CNC laser cutting machine in order to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-platform exchange high-precision positioning CNC laser cutting machine to solve the problem mentioned in the background art: during laser cutting, if the cutting head does not return to the origin or fails to reset during emergency stop, the system should prohibit exchange. However, if the interlocking logic is incorrect or the sensor malfunctions, the cutting head may collide with the worktable, resulting in damage to the laser cutting head and affecting the subsequent laser cutting accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-platform exchange high-precision positioning CNC laser cutting machine, comprising a dual-platform exchange mechanism and a laser cutting head, wherein a cutting head protection mechanism is provided on one side of the dual-platform exchange mechanism, the cutting head protection mechanism comprising an equipment bracket and a dust collection ring, the equipment bracket being fixedly connected to the dual-platform exchange mechanism, a limit plate being fixedly installed on the outer bottom of the dust collection ring, an inner baffle being fixedly installed inside the dust collection ring, a closed sliding plate being fixedly installed inside the inner baffle, the laser cutting head being fixedly installed through and at the center of the closed sliding plate, and multiple closed sliding grooves being fixedly installed inside the closed sliding plate; A protective sliding rod is fixedly installed inside the closed slide groove. A protective sliding sleeve is slidably connected to the outside of the protective sliding rod. A sliding limiting plate is fixedly installed at the bottom of the protective sliding sleeve. A protective baffle is fixedly installed at the bottom of the sliding limiting plate through a protective connecting frame.

[0007] Preferably, a connecting spring is fixedly installed on one side of the protective sliding sleeve, and the other end of the connecting spring is fixedly connected to the inner wall of the closing sliding disc. A closing rotating rod is rotatably connected to the top of the protective sliding sleeve, and a top mounting bracket is rotatably connected to the top of the closing rotating rod. The top mounting bracket is fixedly installed on the bottom outer side of the equipment bracket.

[0008] Preferably, a vacuum cleaner is fixedly installed on the top of the equipment bracket, and a vacuum cleaner is threadedly connected to the top of the vacuum cleaner. The vacuum cleaner is connected to the vacuum ring through a pipe.

[0009] Preferably, the pipe includes connecting bends symmetrically installed on the outside of the vacuum cleaner, with a first vacuum pipe fixedly installed at the bottom of each of the two connecting bends, an annular pipe fixedly installed at the bottom of each of the two first vacuum pipes, and a plurality of second vacuum pipes fixedly installed at the bottom of the annular pipe. The second vacuum pipes are fixedly installed at the top of the vacuum ring, and the height of the inner baffle is higher than that of the protective baffle.

[0010] Preferably, the dual-platform exchange mechanism includes an exchange workbench, an exchange motor is fixedly installed at the center of the outer side of the exchange workbench, an exchange rotating rod is fixedly connected to the output end of the exchange motor, and exchange rotating gears are symmetrically installed on the outer side of the exchange rotating rod.

[0011] Preferably, the tops of the two exchangeable rotating gears are meshed with top meshing racks, the tops of the two top meshing racks are fixedly mounted with top support platforms, the interiors of the top support platforms are fixedly mounted with a plurality of top support protrusions, the bottoms of the two exchangeable rotating gears are meshed with bottom meshing racks, and the bottoms of the two bottom meshing racks are fixedly mounted with top sliding frames.

[0012] Preferably, several electric telescopic rods are fixedly installed on the inner bottom walls of both sides of the top sliding frame. The output end of the electric telescopic rod is fixedly connected to a bottom support platform. Several bottom support protrusions are fixedly installed inside the bottom support platform. The top support platform and the top sliding frame are slidably connected to the exchange workbench. Horizontal limiting plates are symmetrically installed on the top of the exchange workbench near the top of the top support platform.

[0013] Preferably, a translation motor is fixedly installed at one end of the exchange worktable, a translation threaded rod is fixedly connected to the output end of the translation motor, a translation threaded sleeve is threadedly connected to the outer side of the translation threaded rod, a translation sliding rod is fixedly installed on the side of the exchange worktable away from the translation threaded rod, a translation sliding sleeve is slidably connected to the outer side of the translation sliding rod, and a lifting bracket is fixedly installed on the outer side of both the translation sliding sleeve and the translation threaded sleeve.

[0014] Preferably, both of the lifting brackets have lifting grooves inside, and a support plate is fixedly installed on the top of the two lifting brackets. A lifting cylinder is fixedly installed at the bottom center of the support plate. A longitudinal bracket is fixedly connected to the output end of the lifting cylinder. Lifting limit blocks are fixedly installed at both ends of the longitudinal bracket. The lifting limit blocks are slidably connected to the lifting grooves.

[0015] Preferably, a longitudinal motor is fixedly installed on the outer side of one of the lifting limit blocks, a longitudinal threaded rod is fixedly connected to the output end of the longitudinal motor, a longitudinal threaded sleeve is threadedly connected to the outer side of the longitudinal threaded rod, a limit mounting bracket is fixedly installed at the bottom of the longitudinal threaded sleeve, and the limit mounting bracket is fixedly connected to the equipment bracket.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: This dual-platform exchange high-precision positioning CNC laser cutting machine uses a limiting plate at the bottom of the dust suction ring for initial protection. When the laser cutting head continues to descend, the limiting plate drives the closed sliding plate and the laser cutting head to rise when it collides or is squeezed by the workpiece or the top and bottom support protrusions. This upward avoidance method can prevent the laser cutting head from being damaged by collision. When the four protective connecting frames are closed together, the bottom of the laser cutting head can be safely protected, preventing the laser cutting machine from interlocking. When logic errors or sensor malfunctions occur, the laser cutting head may be damaged due to collisions with the tips of the top and bottom support protrusions, affecting its lifespan. Because the inner baffle is higher than the protective baffle, the dust suction ring is moved to the top and bottom support protrusions. When the protective baffle is closed, it can absorb dust and debris adhering to the inside of the top and bottom support protrusions, preventing dust and debris from sticking to them and affecting the flatness of the workpiece and cutting accuracy. The specific details are as follows: 1. By setting up a cutting head protection mechanism, not only can initial protection be provided during the descent of the laser cutting head by the limiting plate at the bottom of the dust suction ring when interlocking logic errors or sensor malfunctions occur in the laser cutting machine, but as the laser cutting head continues to descend, if the limiting plate collides or is squeezed by the workpiece, top support protrusion, or bottom support protrusion, the limiting plate will drive the closing sliding plate and the laser cutting head to rise. This upward avoidance method can prevent collision damage to the laser cutting head. At the same time, when the closing sliding plate rises, the rotation of the closing rotating rod causes the protective sliding sleeve to slide on the outside of the protective sliding rod and compress the connecting spring. Simultaneously, the protective sliding sleeve drives the sliding limiting plate and the protective connecting frame to move. When the four protective connecting frames close together, they can provide safety protection for the bottom of the laser cutting head, preventing interlocking logic errors or sensor malfunctions in the laser cutting machine. The laser cutting head is damaged when its tip collides with the top and bottom support protrusions, affecting its lifespan. During laser cutting, a vacuum cleaner generates suction, and the suction ring draws the cutting debris or smoke into the second suction pipe. Multiple second suction pipes improve the absorption of debris and smoke. The annular pipe collects the debris and smoke, which then enters the suction cylinder via a connecting bend and the first suction pipe. Because the inner baffle is higher than the protective baffle, the suction ring moves to the top and bottom support protrusions. When the protective baffle is closed, it absorbs the dust and debris adhering to the top and bottom support protrusions, preventing them from sticking and affecting the workpiece's flatness and cutting accuracy. 2. By setting up a dual-platform switching mechanism, not only can the switching motor drive the switching rotating rod and the switching rotating gear to rotate, but also the meshing connection between the switching rotating gear and the top and bottom meshing racks can be used to move the top support platform and the top support protrusion, respectively. At the same time, the bottom meshing rack can move the top sliding frame, the bottom support platform, and the bottom support protrusion relative to each other, thereby achieving stable switching between the two platforms. Under the action of the electric telescopic rod, the bottom support platform and the bottom support protrusion can be raised and lowered. The horizontal limit plate can limit the bottom support platform, so that the bottom support platform and the top support platform are on the same horizontal plane, improving the cutting accuracy of the laser cutting machine. The translation motor drives the translation threaded rod to rotate, so that the translation threaded sleeve drives the lifting bracket to move horizontally. The lifting cylinder drives the longitudinal bracket to move up and down. The sliding connection between the lifting slide and the lifting limit block can achieve stable raising and lowering of the longitudinal bracket. The longitudinal motor drives the longitudinal threaded rod to rotate, so that the longitudinal threaded sleeve drives the limit mounting frame to move longitudinally. Through horizontal, vertical, and longitudinal movements, the laser cutting machine can be adjusted in all directions, facilitating the cutting of workpieces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the cutting head protection mechanism in this invention; Figure 3 This invention relates to a three-dimensional structural schematic diagram of a vacuum cleaner cylinder and a vacuum cleaner. Figure 4 This is a three-dimensional cross-sectional structural diagram of the suction ring and the limiting disc in this invention; Figure 5 This is a three-dimensional structural diagram of the top mounting bracket in this invention; Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the closed sliding disk in this invention; Figure 7 This is a three-dimensional structural diagram of the protective connecting frame and the protective baffle in this invention; Figure 8 This is a three-dimensional structural diagram of the dual-platform switching mechanism in this invention; Figure 9 This is a three-dimensional structural diagram of the top support protrusion and the bottom support protrusion in this invention; Figure 10 This is a three-dimensional structural diagram of the lifting support in this invention; Figure 11 This is a three-dimensional structural diagram of the longitudinal support cross-section in this invention.

[0018] In the diagram: 1. Cutting head protection mechanism; 101. Equipment bracket; 102. Dust collection cylinder; 103. Vacuum cleaner; 104. Connecting bend; 105. First dust collection pipe; 106. Ring pipe; 107. Second dust collection pipe; 108. Dust collection ring; 109. Limiting plate; 110. Inner baffle; 111. Closing sliding plate; 112. Laser cutting head; 113. Connecting wire; 114. Power connector; 115. Closing slide; 116. Protective sliding rod; 117. Protective sliding sleeve; 118. Sliding limiting plate; 119. Protective connecting frame; 120. Protective baffle; 121. Connecting spring; 122. Closing rotating rod; 123. Top mounting bracket; 2. Dual platform exchange mechanism; 201. Exchange worktable; 202. Support leg; 203. Exchange motor 204. Exchange rotating rod; 205. Exchange rotating gear; 206. Top meshing rack; 207. Top support platform; 208. Top support protrusion; 209. Bottom meshing rack; 210. Top sliding frame; 211. Electric telescopic rod; 212. Bottom support platform; 213. Bottom support protrusion; 214. Horizontal limit plate; 215. Translation motor; 216. Translation threaded rod; 217. Translation threaded sleeve; 218. Translation sliding rod; 219. Translation sliding sleeve; 220. Lifting bracket; 221. Lifting slide; 222. Support top plate; 223. Lifting cylinder; 224. Longitudinal bracket; 225. Lifting limit block; 226. Longitudinal motor; 227. Longitudinal threaded rod; 228. Longitudinal threaded sleeve; 229. Limit mounting bracket. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-7 , Figure 9 , Figure 11This invention provides a technical solution: a dual-platform exchange high-precision positioning CNC laser cutting machine, including a cutting head protection mechanism 1 and an equipment bracket 101 installed on the outside of the cutting head protection mechanism 1. A dual-platform exchange mechanism 2 is provided on one side of the cutting head protection mechanism 1, and a limit mounting bracket 229 is provided inside the dual-platform exchange mechanism 2. The cutting head protection mechanism 1 includes an equipment bracket 101 and a dust suction ring 108. A limit plate 109 is fixedly installed on the bottom outer side of the dust suction ring 108. An inner baffle 110 is fixedly installed inside the dust suction ring 108, and a closed sliding plate 111 is fixedly installed inside the inner baffle 110. A laser cutting head 112 is fixedly installed at the center position inside the closed sliding plate 111. The moving plate 111 has four closed sliding grooves 115 inside. A protective sliding rod 116 is fixedly installed inside each closed sliding groove 115. A protective sliding sleeve 117 is slidably connected to the outer side of the protective sliding rod 116. A sliding limit plate 118 is fixedly installed at the bottom of the protective sliding sleeve 117. A protective connecting frame 119 is fixedly installed at the bottom of the sliding limit plate 118. A protective baffle 120 is fixedly installed at the bottom of the protective connecting frame 119. A connecting wire 113 is fixedly installed at the top of the laser cutting head 112. A power connector 114 is fixedly installed at the top of the connecting wire 113. The power connector 114 is fixedly installed inside the equipment bracket 101. A connecting spring 121 is fixedly installed on one side of the protective sliding sleeve 117. The other end of the connecting spring 121 is fixedly connected to the inner wall of the closed sliding plate 111. The top of the protective sliding sleeve 117 is rotatably connected to the closed rotating rod 122, and the top of the four closed rotating rods 122 is rotatably connected to the top mounting bracket 123. When the laser cutting machine experiences an interlocking logic error or sensor malfunction, the limiting plate 109 at the bottom of the dust suction ring 108 provides initial protection during the descent of the laser cutting head 112. When the laser cutting head 112 continues to descend, if the limiting plate 109 collides or is squeezed by the workpiece, the top support protrusion 208, or the bottom support protrusion 213, the limiting plate 109 will drive the closed sliding plate 111 and the laser cutting head 112 to rise. This upward avoidance method can prevent... To prevent the laser cutting head 112 from being damaged by collision, when the closing sliding plate 111 rises, the protective sliding sleeve 117 slides outside the protective sliding rod 116 under the rotation of the closing rotating rod 122, and squeezes the connecting spring 121. At the same time, the protective sliding sleeve 117 drives the sliding limit plate 118 and the protective connecting frame 119 to move. When the four protective connecting frames 119 are closed together, they can provide safety protection for the bottom of the laser cutting head 112, avoiding collision with the tip of the top support protrusion 208 or the bottom support protrusion 213 when the laser cutting machine has interlocking logic errors or sensor failures, thus preventing damage to the laser cutting head 112 and affecting its service life.

[0021] Please see Figures 2-7 , Figure 9 A top mounting bracket 123 is fixedly installed on the bottom outer side of the equipment bracket 101. A dust collection cylinder 102 is fixedly installed on the top of the equipment bracket 101. A vacuum cleaner 103 is threadedly connected to the top of the dust collection cylinder 102. The dust collection cylinder 102 is connected to a dust collection ring 108 through a pipe. The pipe includes two connecting bends 104, which are symmetrically installed on the outside of the dust collection cylinder 102. A first dust collection pipe 105 is fixedly installed at the bottom of each of the two connecting bends 104. An annular pipe 106 is fixedly installed at the bottom of each of the two first dust collection pipes 105. Several second dust collection pipes 107 are fixedly installed at the bottom of the annular pipe 106. The second dust collection pipes 107 are fixedly installed on the top of the dust collection ring 108 and are connected to the dust collection ring 108. The height of the inner baffle 110 is higher than that of the protective baffle 120. When cutting with a laser cutting machine, the vacuum cleaner 103 is used. 03 generates a certain suction force, and under the action of the suction ring 108, the cutting debris or smoke is drawn into the second suction pipe 107. By setting multiple second suction pipes 107, the absorption effect of debris and smoke can be improved. The debris and smoke are collected through the annular pipe 106 and enter the suction cylinder 102 for collection through the connecting bend pipe 104 and the first suction pipe 105. Since the inner baffle 110 is higher than the protective baffle 120, the suction ring 108 is moved to the top support protrusion 208 and the bottom support protrusion 213. When the protective baffle 120 is closed, it can absorb the dust and debris adhering inside the top support protrusion 208 and the bottom support protrusion 213, so as to avoid the dust and debris adhering to the top support protrusion 208 and the bottom support protrusion 213, thereby affecting the flatness of the workpiece and the cutting accuracy.

[0022] Please see Figure 1 , Figures 8-9The dual-platform exchange mechanism 2 includes an exchange workbench 201. Support legs 202 are fixedly installed around the bottom of the exchange workbench 201. An exchange motor 203 is fixedly installed at the center of one side of the exchange workbench 201. An exchange rotating rod 204 is fixedly connected to the output end of the exchange motor 203. Exchange rotating gears 205 are symmetrically installed near both ends of the exchange rotating rod 204. Top meshing racks 206 are connected to the top of both exchange rotating gears 205. The tops of the two top meshing racks 206 are fixedly mounted... The system is equipped with a top support platform 207, inside which several top support protrusions 208 are fixedly installed. The bottoms of two interchangeable rotating gears 205 are meshed with bottom meshing racks 209. A top sliding frame 210 is fixedly installed at the bottom of the two bottom meshing racks 209. Several electric telescopic rods 211 are fixedly installed on both sides of the bottom of the top sliding frame 210. The output ends of the electric telescopic rods 211 are fixedly connected to a bottom support platform 212. The bottom support platform 212 has several bottom... The supporting protrusion 213, the top supporting platform 207, and the top sliding frame 210 are all slidably connected to the exchange worktable 201. A horizontal limiting plate 214 is symmetrically installed on the top of the exchange worktable 201 near the top of the top supporting platform 207. The exchange motor 203 drives the exchange rotating rod 204 and the exchange rotating gear 205 to rotate. Utilizing the meshing connection between the exchange rotating gear 205 and the top meshing rack 206 and the bottom meshing rack 209, the top meshing rack 206 drives the top supporting platform 207 and the top sliding frame 210 respectively. The support protrusion 208 moves, and at the same time the bottom meshing rack 209 drives the top sliding frame 210, the bottom support platform 212 and the bottom support protrusion 213 to move relative to each other, thereby realizing the stable switching of the two platforms. Under the action of the electric telescopic rod 211, the bottom support platform 212 and the bottom support protrusion 213 can be raised and lowered. The horizontal limiting plate 214 can limit the bottom support platform 212, so that the bottom support platform 212 and the top support platform 207 are on the same horizontal plane, improving the cutting accuracy of the laser cutting machine.

[0023] Please see Figures 8-11A translation motor 215 is fixedly installed at one end of the exchange worktable 201. A translation threaded rod 216 is fixedly connected to the output end of the translation motor 215. A translation threaded sleeve 217 is threadedly connected to the outer side of the translation threaded rod 216. A translation sliding rod 218 is fixedly installed on the side of the exchange worktable 201 away from the translation threaded rod 216. A translation sliding sleeve 219 is slidably connected to the outer side of the translation sliding rod 218. Lifting brackets 220 are fixedly installed on the outer sides of both the translation sliding sleeve 219 and the translation threaded sleeve 217. Lifting grooves 221 are opened inside the two lifting brackets 220. A support plate 222 is fixedly installed on the top of the two lifting brackets 220. A lifting cylinder 223 is fixedly installed at the bottom center of the support plate 222. A longitudinal bracket 224 is fixedly connected to the output end of the lifting cylinder 223. Lifting limit blocks 225 are fixedly installed at both ends of the longitudinal bracket 224. The lifting limit blocks 225 are connected to the lifting brackets 220 through the lifting grooves 221. A sliding connection is used. A longitudinal motor 226 is fixedly installed on the outer side of the lifting limit block 225 on one side. A longitudinal threaded rod 227 is fixedly connected to the output end of the longitudinal motor 226. A longitudinal threaded sleeve 228 is threadedly connected to the outer side of the longitudinal threaded rod 227. A limit mounting bracket 229 is fixedly installed at the bottom of the longitudinal threaded sleeve 228. The limit mounting bracket 229 is fixedly connected to the equipment bracket 101. The translation motor 215 drives the translation threaded rod 216 to rotate, so that the translation threaded sleeve 217 drives the lifting bracket 220 to move horizontally. The lifting cylinder 223 drives the longitudinal bracket 224 to move up and down. Through the sliding connection between the lifting slide 221 and the lifting limit block 225, the longitudinal bracket 224 can be stably lifted and lowered. The longitudinal motor 226 is started to drive the longitudinal threaded rod 227 to rotate, so that the longitudinal threaded sleeve 228 drives the limit mounting bracket 229 to move longitudinally. Through horizontal, vertical and longitudinal movements, the laser cutting machine can be adjusted in all directions, which is convenient for cutting workpieces.

[0024] Working principle: Before using this dual-platform exchange high-precision positioning CNC laser cutting machine, it is necessary to check the overall condition of the device to ensure it can operate normally. Figures 1-11As shown, firstly, the exchange motor 203 drives the exchange rotating rod 204 and the exchange rotating gear 205 to rotate. Utilizing the meshing connection between the exchange rotating gear 205 and the top meshing rack 206 and the bottom meshing rack 209, the top meshing rack 206 drives the top support platform 207 and the top support protrusion 208 to move, while the bottom meshing rack 209 drives the top sliding frame 210, the bottom support platform 212, and the bottom support protrusion 213 to move relative to each other, thus achieving stable switching between the two platforms. Under the action of the electric telescopic rod 211, the bottom support platform 212 and the bottom support protrusion 213 are moved up and down. The horizontal limiting plate 214 can limit the movement of the bottom support platform 212. Positioning ensures that the bottom support platform 212 and the top support platform 207 are on the same horizontal plane, improving the cutting accuracy of the laser cutting machine. The translation motor 215 drives the translation threaded rod 216 to rotate, causing the translation threaded sleeve 217 to drive the lifting bracket 220 to move horizontally. The lifting cylinder 223 drives the longitudinal bracket 224 to move up and down. Through the sliding connection between the lifting slide 221 and the lifting limit block 225, the longitudinal bracket 224 can be stably raised and lowered. The longitudinal motor 226 is started to drive the longitudinal threaded rod 227 to rotate, causing the longitudinal threaded sleeve 228 to drive the limit mounting bracket 229 to move longitudinally. Through horizontal, vertical and longitudinal movements, the laser cutting machine can be adjusted in all directions, facilitating the cutting of workpieces.

[0025] Secondly, when the laser cutting machine experiences interlocking logic errors or sensor malfunctions, the limiting plate 109 at the bottom of the dust suction ring 108 provides initial protection during the descent of the laser cutting head 112. As the laser cutting head 112 continues to descend, if the limiting plate 109 collides or is squeezed by the workpiece, the top support protrusion 208, or the bottom support protrusion 213, the limiting plate 109 will cause the closed sliding plate 111 and the laser cutting head 112 to rise. This upward avoidance method prevents the laser cutting head 112 from being damaged by collision. Simultaneously, when the closed sliding plate 111 rises, the closing rotating rod... Under the rotation of 122, the protective sliding sleeve 117 slides on the outside of the protective sliding rod 116 and squeezes the connecting spring 121. At the same time, the protective sliding sleeve 117 drives the sliding limit plate 118 and the protective connecting frame 119 to move. When the four protective connecting frames 119 are closed to each other, they can provide safety protection for the bottom of the laser cutting head 112, so as to avoid the laser cutting head 112 from being damaged and its service life affected when the laser cutting machine has interlocking logic errors or sensor failures and collides with the tip of the top support protrusion 208 and the bottom support protrusion 213.

[0026] Finally, during laser cutting, the vacuum cleaner 103 generates a certain suction force, and under the action of the suction ring 108, the cutting debris or smoke is drawn into the second suction pipe 107. By setting multiple second suction pipes 107, the absorption effect of debris and smoke can be improved. The debris and smoke are collected through the annular pipe 106 and enter the suction cylinder 102 for collection through the connecting bend pipe 104 and the first suction pipe 105. Since the inner baffle 110 is higher than the protective baffle 120, the suction ring 108 is moved to the top support protrusion 208 and the bottom support protrusion 213. When the protective baffle 120 is closed, the dust and debris adhering inside the top support protrusion 208 and the bottom support protrusion 213 can be absorbed, preventing dust and debris from adhering to the top support protrusion 208 and the bottom support protrusion 213, thereby affecting the flatness of the workpiece and the cutting accuracy.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-platform exchange high-precision positioning CNC laser cutting machine, comprising a dual-platform exchange mechanism (2) and a laser cutting head (112), characterized in that: A cutting head protection mechanism (1) is provided on one side of the dual-platform exchange mechanism (2). The cutting head protection mechanism (1) includes an equipment bracket (101) and a dust collection ring (108). The equipment bracket (101) is fixedly connected to the dual-platform exchange mechanism (2). A limiting plate (109) is fixedly installed on the outer bottom of the dust collection ring (108). An inner baffle (110) is fixedly installed inside the dust collection ring (108). A closed sliding plate (111) is fixedly installed inside the inner baffle (110). The laser cutting head (112) is fixedly installed through the center of the closed sliding plate (111). Multiple closed sliding grooves (115) are fixedly installed inside the closed sliding plate (111). A protective sliding rod (116) is fixedly installed inside the closed slide groove (115). A protective sliding sleeve (117) is slidably connected to the outside of the protective sliding rod (116). A sliding limiting plate (118) is fixedly installed at the bottom of the protective sliding sleeve (117). A protective baffle (120) is fixedly installed at the bottom of the sliding limiting plate (118) through a protective connecting frame (119).

2. The dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 1, characterized in that: A connecting spring (121) is fixedly installed on one side of the protective sliding sleeve (117), and the other end of the connecting spring (121) is fixedly connected to the inner wall of the closed sliding disc (111). A closed rotating rod (122) is rotatably connected to the top of the protective sliding sleeve (117), and a top mounting bracket (123) is rotatably connected to the top of the closed rotating rod (122). The top mounting bracket (123) is fixedly installed on the bottom outer side of the equipment bracket (101).

3. The dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 2, characterized in that: A vacuum cleaner (102) is fixedly installed on the top of the equipment bracket (101), and a vacuum cleaner (103) is threadedly connected to the top of the vacuum cleaner (102). The vacuum cleaner (102) is connected to the vacuum ring (108) through a pipe.

4. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 3, characterized in that: The pipe includes connecting bends (104) symmetrically installed on the outside of the vacuum tube (102). A first vacuum tube (105) is fixedly installed at the bottom of each of the two connecting bends (104). An annular tube (106) is fixedly installed at the bottom of each of the two first vacuum tubes (105). A plurality of second vacuum tubes (107) are fixedly installed at the bottom of the annular tube (106). The second vacuum tubes (107) are fixedly installed at the top of the vacuum ring (108). The height of the inner baffle (110) is higher than that of the protective baffle (120).

5. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 1, characterized in that: The dual-platform exchange mechanism (2) includes an exchange workbench (201), an exchange motor (203) is fixedly installed at the center of the outer side of the exchange workbench (201), an exchange rotating rod (204) is fixedly connected to the output end of the exchange motor (203), and exchange rotating gears (205) are symmetrically installed on the outer side of the exchange rotating rod (204).

6. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 5, characterized in that: The tops of the two exchangeable rotating gears (205) are meshed with top meshing racks (206), and the tops of the two top meshing racks (206) are fixedly mounted with top support platforms (207). Several top support protrusions (208) are fixedly mounted inside the top support platforms (207). The bottoms of the two exchangeable rotating gears (205) are meshed with bottom meshing racks (209), and the bottoms of the two bottom meshing racks (209) are fixedly mounted with top sliding frames (210).

7. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 6, characterized in that: Several electric telescopic rods (211) are fixedly installed on the inner bottom walls of both sides of the top sliding frame (210). The output end of the electric telescopic rod (211) is fixedly connected to the bottom support platform (212). Several bottom support protrusions (213) are fixedly installed inside the bottom support platform (212). The top support platform (207) and the top sliding frame (210) are slidably connected to the exchange workbench (201). Horizontal limiting plates (214) are symmetrically installed on the top of the exchange workbench (201) near the top of the top support platform (207).

8. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 7, characterized in that: One end of the exchange workbench (201) is fixedly equipped with a translation motor (215), the output end of the translation motor (215) is fixedly connected to a translation threaded rod (216), the outer side of the translation threaded rod (216) is threadedly connected to a translation threaded sleeve (217), the side of the exchange workbench (201) away from the translation threaded rod (216) is fixedly equipped with a translation sliding rod (218), the outer side of the translation sliding rod (218) is slidably connected to a translation sliding sleeve (219), and lifting brackets (220) are fixedly installed on the outer sides of both the translation sliding sleeve (219) and the translation threaded sleeve (217).

9. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 8, characterized in that: Both of the lifting brackets (220) have lifting grooves (221) inside. A support plate (222) is fixedly installed on the top of the two lifting brackets (220). A lifting cylinder (223) is fixedly installed at the bottom center of the support plate (222). A longitudinal bracket (224) is fixedly connected to the output end of the lifting cylinder (223). Lifting limit blocks (225) are fixedly installed at both ends of the longitudinal bracket (224). The lifting limit blocks (225) are slidably connected to the lifting grooves (221).

10. A dual-platform exchange high-precision positioning CNC laser cutting machine according to claim 9, characterized in that: A longitudinal motor (226) is fixedly installed on the outer side of one of the lifting limit blocks (225). A longitudinal threaded rod (227) is fixedly connected to the output end of the longitudinal motor (226). A longitudinal threaded sleeve (228) is threadedly connected to the outer side of the longitudinal threaded rod (227). A limit mounting bracket (229) is fixedly installed at the bottom of the longitudinal threaded sleeve (228). The limit mounting bracket (229) is fixedly connected to the equipment bracket (101).

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