A thin-walled sheet metal laser cutting anti-deformation device based on an electromagnetic auxiliary structure

Abstract

The present invention relates to the technical field of sheet metal laser cutting, and discloses a deformation prevention device for thin-walled sheet metal laser cutting based on an electromagnetic auxiliary structure, including a support table body and a support device body. A laser cutting head is slidably installed on the support device body, and a cooperation group, a sliding table and a support part of a driving group are installed on the laser cutting head. The support part includes a rectangular supporting block, and a support group is installed inside the rectangular supporting block in a matching manner. A material receiving group is installed between two adjacent rectangular supporting blocks, and a deformation prevention mechanism. The deformation prevention mechanism includes two installation platforms fixedly arranged on the left and right side walls of the support table body. An adjustment group is slidably arranged between the two installation platforms, and an auxiliary group is arranged inside the support table body and directly below the adjustment group. This deformation prevention device for thin-walled sheet metal laser cutting can effectively solve the problems of bulging and unevenness generated during the placement of thin-walled sheet metal in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal laser cutting, and particularly relates to a deformation prevention device for thin-walled sheet metal laser cutting based on an electromagnetic auxiliary structure. Background Art

[0002] As a component made of fine processing of metal sheets, thin-walled sheet metal has penetrated into many high-end manufacturing fields such as automobile manufacturing, aerospace, electronic technology, and household appliances with its significant advantages such as lightweight design, efficient use of materials, and compact structural layout, and has become an indispensable key component.

[0003] Laser cutting, as one of the mainstream technologies in the current thin-walled sheet metal processing field, uses a laser beam with a high energy density as a heat source to precisely cut the sheet metal, so as to obtain a sample meeting the design requirements.

[0004] Although laser cutting has a fast cutting speed, excellent accuracy, and a small heat-affected zone, there are still many challenges in the process of cutting thin-walled sheet metal. Among them, due to the thin wall thickness of the thin-walled sheet metal, geometric deformation problems such as bulging and unevenness will inevitably occur during the placement work, and the laser cutting equipment cannot guarantee the cutting accuracy and the quality of the final sample when cutting the deformed sheet metal. Summary of the Invention

[0005] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a deformation prevention device for thin-walled sheet metal laser cutting based on an electromagnetic auxiliary structure, which can effectively solve the problems of bulging and unevenness generated by thin-walled sheet metal during the placement work in the prior art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] The present invention provides a deformation prevention device for thin-walled sheet metal laser cutting based on an electromagnetic auxiliary structure, including:

[0008] A support table body, on two adjacent side walls of which two electromagnets are slidably arranged through electric sliders respectively;

[0009] A deformation prevention mechanism, which includes two mounting platforms fixedly arranged on the left and right side walls of the support table body. An adjustment group is slidably arranged between the two mounting platforms, and an auxiliary group is arranged inside the support table body and directly below the adjustment group;

[0010] A support equipment body, on which a laser cutting head is slidably installed, and a cooperation group is installed on the laser cutting head;

[0011] The sliding table is provided with two and fixedly installed on the left and right side walls at the rear of the support table body. Both sliding tables are provided with sliding grooves, and a driving group is arranged inside the sliding grooves;

[0012] The supporting part includes several U-shaped supporting blocks slidably arranged on the inner wall of the support table body through electric sliders, and a supporting group is installed inside the U-shaped supporting blocks in a matching manner. A material containing group is installed between two adjacent U-shaped supporting blocks;

[0013] Among them, the adjusting group includes a mounting plate slidably arranged between two mounting tables. Threaded rods with lower end faces rotatably connected to the two mounting tables are connected to both ends of the mounting plate, and a flattening part is also arranged on the lower end face at the central position of the mounting plate;

[0014] Among them, the auxiliary group includes a rotating shaft fixedly connected to the output shaft of an external motor. A supporting part that cooperates with the flattening part is fixedly arranged on the upper end face of the rotating shaft.

[0015] Further, the flattening part includes a hexagonal table rotatably arranged on the lower end face of the mounting plate through a bearing. Flattening plates are fixedly arranged on the outer wall of the hexagonal table along the circumferential direction through tension springs. A flattening shaft is rotatably arranged at the bottom end of the flattening plate.

[0016] Further, the supporting part includes an adjusting disc fixedly arranged on the upper end face of the rotating shaft. A plurality of arc-shaped grooves are opened on the end face of the adjusting disc along the circumferential direction. Round rods are slidably arranged inside the arc-shaped grooves. A T-shaped supporting plate is fixedly arranged on the upper end face of the round rod. A connecting rod slidably connected to the support table body is fixedly arranged on the lower end face of the T-shaped supporting plate. The lower end face of the round rod is fixedly connected to the connecting rod through a strip-shaped plate.

[0017] Further, the supporting group includes a U-shaped supporting platform slidably arranged inside the U-shaped supporting block through a spring. A T-shaped plate is slidably arranged inside the U-shaped supporting platform. A plurality of supporting groups are fixedly arranged on the upper end face of the T-shaped plate. Each supporting group includes three conical supporting rods.

[0018] Further, three clamping groups are slidably arranged inside the U-shaped supporting platform along the front-rear direction. Each clamping group includes two clamping plates with tapered grooves and clamping the corresponding conical supporting rods. The two clamping plates in the same group are connected through a spring. A plurality of collecting groups are also arranged inside the U-shaped supporting platform. Each collecting group includes two square plates with a V-shaped position and through grooves opened on the end faces. The two square plates are respectively connected to the clamping plates through torsion springs.

[0019] Further, the material receiving group includes several hinge rods slidably arranged inside the support table body in the up-and-down direction. The outer circumferential wall of the hinge rod is hinged in a V shape with two support plates respectively fixedly connected to the corresponding loop-shaped supporting blocks. Two material receiving plates are placed in cooperation between the two support plates. The two material receiving plates are connected by a torsion spring. Circular through grooves extending in the left-and-right direction are provided on the end faces of the support plates and the material receiving plates.

[0020] Further, the driving group includes electric sliders slidably arranged inside the two sliding grooves. The upper ends of the electric sliders are fixedly connected to the support equipment body. Two L-shaped telescopic blocks and a square plate located between the two L-shaped telescopic blocks are fixedly arranged on the lower end face of the electric slider. A cylindrical rod penetrating the support table body is rotatably connected to the end face of the square plate. A gear is fixedly arranged inside the support table body and at the top of the cylindrical rod. Rack teeth meshing with the gear are fixedly arranged on the upper end faces of the horizontal sections of the two L-shaped telescopic blocks. Connecting pieces are respectively arranged on the end faces of the two rack teeth.

[0021] Further, the connecting piece includes a connecting plate slidably arranged in the up-and-down direction and having a sliding groove inside. Two connecting plates are provided and are distributed in the up-and-down direction inside the support table body. The inner part of the upper connecting plate is slidably connected to several loop-shaped bearing platforms and the front rack tooth respectively. The inner part of the lower connecting plate is slidably connected to several T-shaped plates and the rear rack tooth respectively.

[0022] Further, the matching group includes an annular ring rotatably sleeved on the outer wall of the laser cutting head. A plurality of rectangular grooves are opened upward along the circumferential direction on the lower end face of the annular ring. A matching plate with a roller at the lower end face is arranged inside the rectangular groove through a torsion spring. A telescopic belt is connected between adjacent matching plates.

[0023] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0024] The present invention is provided with a flattening member. The downward pressing of the flattening roller and the support of the T-shaped bearing plate can effectively eliminate the surface unevenness of the thin-walled sheet metal during placement. At the same time, the electromagnetic fixation of the electromagnets at the four corners ensures that the sheet metal will not retract, significantly reducing the deformation of the sheet metal during placement, and then ensuring the subsequent laser cutting accuracy. At the same time, during the subsequent cutting process, the isolation areas on the upper and lower surfaces of the sheet metal in a bowl shape can effectively suppress the ejection of metal chips, and then protect the upper and lower surfaces of the sheet metal from scratches, improving the surface smoothness and accuracy of the sheet metal. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic three-dimensional structure diagram of an embodiment of the present invention;

[0027] Figure 2 Schematic three-dimensional structure diagram of the anti-deformation structure in an embodiment of the present invention;

[0028] Figure 3 Schematic three-dimensional structure diagram of the supporting member and the flattening member in an embodiment of the present invention;

[0029] Figure 4 Schematic three-dimensional diagram of a partial structure of the driving group in an embodiment of the present invention;

[0030] Figure 5 Schematic plan view of the driving group and the material receiving group in an embodiment of the present invention;

[0031] Figure 6 In an embodiment of the present invention Figure 5 Schematic diagram of the partial enlarged structure at position A;

[0032] Figure 7 Schematic three-dimensional structure diagram of the supporting part in an embodiment of the present invention;

[0033] Figure 8 In an embodiment of the present invention Figure 7 Schematic diagram of the partial enlarged structure at position B;

[0034] Figure 9 Schematic three-dimensional structure diagram of the cooperation group in an embodiment of the present invention;

[0035] Figure 10 Schematic diagram of the state transformation of the anti-deformation mechanism in an embodiment of the present invention.

[0036] The reference numerals in the figure respectively represent: 1. Support table body; 2. Anti-deformation mechanism; 21. Installation table; 22. Adjustment group; 221. Installation plate; 222. Threaded rod; 223. Flattening member; 2231. Hexagonal table; 2232. Flattening plate; 2233. Flattening shaft; 23. Auxiliary group; 231. Rotating shaft; 232. Supporting member; 2321. Adjusting disk; 2322. T-shaped supporting plate; 2323. Connecting rod; 3. Support equipment body; 31. Laser cutting head; 32. Matching group; 321. Ring; 322. Roller; 323. Matching plate; 4. Slide table; 41. Driving group; 411. L-shaped telescopic block; 412. Square plate; 413. Gear; 414. Rack; 415. Connecting member; 4151. Connecting plate; 5. Support portion; 51. U-shaped supporting block; 52. Support group; 521. U-shaped supporting platform; 5211. Clamping plate; 5212. Square plate; 522. T-shaped plate; 523. Conical support rod; 53. Material receiving group; 531. Hinge rod; 532. Support plate. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] The present invention will be further described below with reference to the embodiments.

[0039] Embodiment:

[0040] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a thin-walled sheet metal laser cutting anti-deformation device based on an electromagnetic auxiliary structure, including:

[0041] The support table body 1, two electromagnets are respectively slidably arranged on two adjacent side walls of the support table body 1 through electric sliders, and waist-shaped grooves are respectively opened on the left and right side walls of the rear end of the support table body 1;

[0042] The anti-deformation mechanism 2, the anti-deformation mechanism 2 includes two installation tables 21 fixedly arranged on the left and right side walls of the support table body 1, an adjustment group 22 is slidably arranged between the two installation tables 21, and an auxiliary group 23 is arranged inside the support table body 1 and directly below the adjustment group 22;

[0043] The support equipment body 3, a laser cutting head 31 is slidably installed on the support equipment body 3, and a matching group 32 is installed on the laser cutting head 31;

[0044] The sliding table 4 is provided with two and fixedly installed on the left and right side walls at the rear of the support table body 1. Both of the two sliding tables 4 are provided with sliding grooves, and a driving group 41 is arranged inside the sliding grooves;

[0045] The supporting part 5 includes a plurality of U-shaped supporting blocks 51 slidably arranged on the inner wall of the support table body 1 through electric sliders. Two top plates are arranged on the lower end surface of the U-shaped supporting block 51 through torsion springs. A supporting group 52 is installed inside the U-shaped supporting block 51, and a material receiving group 53 is installed between two adjacent U-shaped supporting blocks 51;

[0046] Among them, the adjusting group 22 includes a mounting plate 221 slidably arranged between two mounting platforms 21. Threaded rods 222 whose lower end surfaces are rotatably connected to the two mounting platforms 21 are threadedly connected to both ends of the mounting plate 221. Belt pulleys are respectively fixedly arranged on the outer walls of the two threaded rods 222, and a flattening part 223 is also arranged on the lower end surface at the central position of the mounting plate 221;

[0047] Among them, the assisting group 23 includes a rotating shaft 231 fixedly connected to the output shaft of an external motor. Belt pulleys are also respectively fixedly arranged on the outer wall of the rotating shaft 231 at positions corresponding to the belt pulleys on the two threaded rods 222 in the up and down directions. The two belt pulleys at the same height are connected by a transmission belt. A supporting part 232 cooperating with the flattening part 223 is fixedly arranged on the upper end surface of the rotating shaft 231.

[0048] The flattening part 223 includes a hexagonal table 2231 rotatably arranged on the lower end surface of the mounting plate 221 through a bearing. Flattening plates 2232 are fixedly arranged on the outer wall of the hexagonal table 2231 along the circumferential direction through tension springs. A flattening shaft 2233 is rotatably arranged at the bottom end of the flattening plate 2232.

[0049] The supporting part 232 includes an adjusting disc 2321 fixedly arranged on the upper end surface of the rotating shaft 231. A supporting disc is rotatably connected upward at the central position of the adjusting disc 2321. A plurality of arc-shaped grooves are opened on the end surface of the adjusting disc 2321 along the circumferential direction. Round rods are slidably arranged inside the arc-shaped grooves. A T-shaped supporting plate 2322 at the same height as the supporting disc is fixedly arranged on the upper end surface of the round rod. A connecting rod 2323 slidably connected to the support table body 1 is fixedly arranged on the lower end surface of the T-shaped supporting plate 2322. The lower end surface of the round rod is fixedly connected to the connecting rod 2323 through a strip-shaped plate.

[0050] The supporting group 52 includes a U-shaped supporting platform 521 slidably arranged inside the U-shaped supporting block 51 through a spring. A T-shaped plate 522 is slidably arranged inside the U-shaped supporting platform 521. A plurality of supporting groups are fixedly arranged on the upper end surface of the T-shaped plate 522. Each supporting group includes three conical supporting rods 523. A plurality of through grooves are opened downward on the upper end surface of the T-shaped plate 522 along the front and back directions, and the positions of the plurality of through grooves are staggered from those of the conical supporting rods 523.

[0051] Inside the U-shaped bearing platform 521, three clamping groups are slidably arranged in the front-back direction. Each clamping group includes two clamping plates 5211 with tapered grooves and clamping the corresponding tapered support rods 523. The two clamping plates 5211 in the same group are connected by springs. Inside the U-shaped bearing platform 521, several collecting groups are also arranged. Each collecting group includes two square plates 5212 with a V-shaped position and through grooves opened on the end faces. The two square plates 5212 are respectively connected to the clamping plates 5211 through torsion springs.

[0052] The material loading group 53 includes several hinged rods 531 slidably arranged inside the support platform body 1 in the up-down direction. The outer circumferential wall of the hinged rod 531 is hinged with two support plates 532 respectively fixedly connected to the corresponding U-shaped supporting blocks 51 in a V-shaped manner. Two material receiving plates are placed in cooperation between the two support plates 532. The two material receiving plates are connected by a torsion spring. Circular through grooves extending in the left-right direction are opened on the end faces of the support plates 532 and the material receiving plates. The side walls of the frontmost U-shaped supporting block 51 and the rearmost U-shaped supporting block 51 are respectively hinged to the support platform body 1 through two V-shaped support plates 532.

[0053] The driving group 41 includes electric sliders slidably arranged inside the two sliding grooves. The upper ends of the electric sliders are fixedly connected to the supporting equipment body 3. Two L-shaped telescopic blocks 411 and a square plate 412 located between the two L-shaped telescopic blocks 411 are fixedly arranged on the lower end faces of the electric sliders. A cylindrical rod located inside the waist-shaped groove is rotatably connected to the end face of the square plate 412. A gear 413 is fixedly arranged inside the support platform body 1 and at the top of the cylindrical rod. Rack bars 414 meshing and driving with the gear 413 are fixedly arranged on the upper end faces of the horizontal sections of the two L-shaped telescopic blocks 411. Connecting pieces 415 are respectively arranged on the end faces of the two rack bars 414.

[0054] The connecting piece 415 includes a connecting plate 4151 slidably arranged in the up-down direction and having a sliding groove opened inside. Two connecting plates 4151 are arranged and distributed in the up-down direction inside the support platform body 1. The inner parts of the upper connecting plate 4151 are respectively slidably connected to several U-shaped bearing platforms 521 and the front rack bar 414. The inner parts of the lower connecting plate 4151 are respectively slidably connected to several T-shaped plates 522 and the rear rack bar 414.

[0055] The matching group 32 includes an annular ring 321 rotatably sleeved on the outer wall of the laser cutting head 31. Several rectangular grooves are opened upward along the circumferential direction on the lower end face of the annular ring 321. Matching plates 323 with rollers 322 at the lower ends are arranged inside the rectangular grooves through torsion springs. Stretch belts are connected between adjacent matching plates 323.

[0056] During specific implementation, the work of preventing deformation and flattening of the thin-walled sheet metal:

[0057] During actual use, first, control the electric slider to drive the electromagnets on the support table body 1 to move away from each other, creating a position for placing the thin-walled sheet metal. Due to the thin thickness of the lightweight thin-walled sheet metal, it is impossible to avoid the phenomenon of surface bulging or unevenness of the thin-walled sheet metal during placement. When the thin-walled sheet metal is placed on several T-shaped bearing plates 2322 by an external hoisting device, the several T-shaped bearing plates 2322 can provide an upward supporting force to the thin-walled sheet metal through the support of the connecting rod 2323, preventing the sheet metal from sliding downward when placed. At this time, control the external motor to drive the rotation shaft 231 and the adjustment disk 2321 to rotate. During the rotation of the adjustment disk 2321, several arc-shaped grooves formed thereon drive the round rods during rotation, thereby driving several T-shaped bearing plates 2322 and the connecting rod 2323 to move away synchronously, sliding from the central position of the thin-walled sheet metal to the periphery, so as to expand the supporting area of the T-shaped bearing plates 2322 for the thin-walled sheet metal.

[0058] During the rotation of the rotation shaft 231, while several T-shaped bearing plates 2322 move away synchronously, the belt pulley and the transmission belt provided on the outer wall of the rotation shaft 231 drive the threaded rods 222 on both sides to rotate synchronously. The mounting plate 221 slides downward along the mounting table 21 under the rotation of the two threaded rods 222. During the sliding process, the flattening shaft 2233 first contacts the upper surface of the sheet metal, and the pressing work continues. The angle change between the flattening plate 2232, the flattening shaft 2233, and the upper surface of the thin-walled sheet metal is completed through the torsion spring provided between them and the hexagonal table 2231. The bulging and uneven positions of the thin-walled sheet metal are rolled and flattened by the flattening shaft 2233.

[0059] Several T-shaped bearing plates 2322 and connecting rods 2323 are provided in the support member 232. The several T-shaped bearing plates 2322 and connecting rods 2323 are slidably arranged in the arc-shaped grooves of the adjustment disk 2321 along the circumferential direction through round rods. When the rotation shaft 231 is driven by an external motor to drive the adjustment disk 2321 to rotate, the several T-shaped bearing plates 2322 slide away from each other along the circumferential direction under the drive of the arc-shaped grooves and round rods, providing an average and stable supporting force to the thin-walled sheet metal while also expanding the supporting area for the thin-walled sheet metal. At the same time, during the sliding process of the T-shaped bearing plates 2322, the flattening plate 2232 drives the flattening shaft 2233 to move downward synchronously, completing the flattening work of the thin-walled sheet metal through the cooperation of the upper and lower directions, and avoiding the problem of deformation caused by the uneven surface of the thin-walled sheet metal during the subsequent laser cutting process.

[0060] Laser cutting work of the thin-walled sheet metal:

[0061] After the thin-walled sheet metal is flattened, the electromagnet on the support table body 1 is driven by an electric slider to move (before the thin-walled sheet metal is placed, several electromagnets on the support table body 1 move away from each other under the drive of the electric slider and roughly move to the positions at the corners of the thin-walled sheet metal). After the four electromagnets are adjusted in position, they move to the four corners of the thin-walled sheet metal, and the thin-walled sheet metal is pressed and fixed by electromagnetic fixation to prevent it from retracting due to force. After the fixation is completed, the thin-walled sheet metal is driven by the electric slider to slide forward.

[0062] During the movement of the sheet metal, the electric slider arranged on the inner wall of the support table body 1 is controlled to drive the loop-shaped supporting block 51 to move and ensure that the distances between adjacent loop-shaped supporting blocks 51 are the same (in the initial state, the distances between several loop-shaped supporting blocks 51 are relatively small, and the angles between the two support plates 532 arranged between two adjacent loop-shaped supporting blocks 51 are also relatively small due to the distances between the two loop-shaped supporting blocks 51). The thin-walled sheet metal is driven by the electric slider to move to the upper end surfaces of several loop-shaped supporting blocks 51, and the support work for the lower surface of the sheet metal is completed through the loop-shaped supporting blocks 51. Several loop-shaped supporting blocks 51 with the same distance can provide a uniform supporting force during the laser cutting of the sheet metal. The several loop-shaped supporting blocks 51 that move synchronously can continuously change the supporting positions of the thin-walled sheet metal during the laser cutting process to prevent the cut sheet metal waste from turning downwards due to gravity.

[0063] After the thin-walled sheet metal moves to the specified working position, the electric slider inside the sliding table 4 drives the gear 413, the rack 414, and the laser cutting head 31 to move synchronously. During the movement, the laser cutting head 31 is moved to directly above the frontmost loop-shaped supporting block 51. Subsequently, the laser cutting head 31 is controlled to descend. During the descent of the laser cutting head 31, it pushes the front-side rack 414 and the corresponding connecting plate 4151 downward. During the movement of the connecting plate 4151, it pulls several loop-shaped bearing platforms 521 away from the thin-walled sheet metal (in the initial state, the loop-shaped bearing platforms 521 and the loop-shaped supporting blocks 51 are at the same height, while the T-shaped plate 522 is lower than the loop-shaped bearing platforms 521 and the loop-shaped supporting blocks 51. When the laser cutting head 31 moves downward, through the meshing of the two racks 414 and the gear 413, the positions of the loop-shaped bearing platforms 521 and the T-shaped plate 522 change. At this time, the tapered support rod 523 provided on the T-shaped plate 522 moves upward and closely adheres to the lower surface of the sheet metal. During the movement of the tapered support rod 523, it pushes the square plates 5212 toward both sides respectively, causing the two square plates 5212 to push against each other and the included angle to gradually decrease. Through the conversion of support, it can be avoided that the laser beam damages the loop-shaped bearing platform 521 during laser cutting). When the front-side rack 414 moves downward, it meshes with the gear 413 and causes the gear 413 to rotate. When the gear 413 rotates, it meshes with the rear-side rack 414 and causes the rear-side rack 414 and the corresponding connecting plate 4151 to move upward. During the upward movement of this connecting plate 4151, it drives several T-shaped plates 522 to move upward.

[0064] Taking the loop-shaped bearing platform 521 inside any loop-shaped supporting block 51 as an example, during the downward movement of the loop-shaped bearing platform 521, its lower end surface will push downward against the two top blocks inside the loop-shaped supporting block 51. Under the action of the torsion springs, the two top blocks gradually change from the initial horizontal position to an inclined position, ensuring that the loop-shaped bearing platform 521 will not separate from the loop-shaped supporting block 51. During the movement of the loop-shaped bearing platform 521, a rectangular area will be generated between it and the lower surface of the sheet metal. Through this area, the subsequent laser-cutting sparks are isolated, avoiding the uncut area on the lower surface of the sheet metal being scratched by the fine metal chips in the sparks during the ejection process.

[0065] After the tapered support rod 523 is in contact with the lower surface of the sheet metal, the laser cutting head 31 is controlled to move downward. The roller 322 first contacts the upper surface of the sheet metal. During the adjustment of the annular ring 321 and the continuous downward pressure, the positions of several mating plates 323 and the roller 322 change and they move synchronously away along the surface of the sheet metal. At the same time, during the movement away of several mating plates 323, they enclose a bowl-shaped area with an opening downward by stretching the elastic band. Through this bowl-shaped area, the ejection of the sparks during the cutting work on the upper surface of the sheet metal is greatly reduced, effectively avoiding the uncut area on the upper surface of the sheet metal being scratched by the fine metal chips in the sparks.

[0066] The matching plate 323 is arranged inside the rectangular groove of the annular ring 321 through a torsion spring. When the laser cutting head 31 is working, the matching plate 323 can not only protect the upper surface of the thin-walled sheet metal from damage, but also can further press down and smooth the cutting position during the process of the matching plate 323 driving the roller 322 to move downward and change position, thereby improving the laser cutting accuracy. After the cutting is completed, when a small amount of sheet metal samples cannot be separated from the sheet metal due to the small connection points, the matching plate 323 drives the roller 322 to move upward, and the sheet metal samples that have been cut are rolled to separate them from the sheet metal, thereby improving the cutting efficiency of the sheet metal samples.

[0067] It should be noted that when the laser cutting head 31 switches the working area and moves upward, the circular support platform 521 and the T-shaped plate 522 will move in the opposite direction under the action of the gear 413 and the rack 414, and the outer wall of the conical support rod 523 will be scraped and cleaned by the clamping plate 5211 set on the circular support platform 521, so as to avoid the accumulation and solidification of metal chips on the outer wall of the conical support rod 523 under long-term work, causing unstable support for thin-walled sheet metal.

[0068] Most of the scraped metal chips roll down along the inclined direction of the square plate 5212 and fall into the inside of the support table body 1 along the through groove, and a small amount of metal chips will remain on the upper surface of the square plate 5212. At this time, when the laser cutting head 31 moves downward, the circular support platform 521 and the T-shaped plate 522 move in opposite directions, and the two square plates 5212 push each other and the angle gradually decreases (in the initial state, the non-connected sections of the two square plates 5212 contact each other, and the angle between the two square plates 5212 is large), so that the metal chips remaining on the upper surface of the square plate 5212 slide into the through groove.

[0069] Collection work after sheet metal cutting:

[0070] After the cutting of the corresponding circular support block 51 of the sheet metal is completed, the external blowing equipment is preferentially connected to the support plate 532, and the gas is transported upward through the circular through grooves provided on the support plate 532 and the receiving plate, and then the electric slider is controlled to drive several circular support blocks 51 to move and change the distance between two adjacent circular support blocks 51. When two adjacent circular support blocks 51 move away from each other, their side walls will pull the corresponding support plate 532. When the angle of the two support plates 532 hinged on the hinged rod 531 is stretched to the maximum, the hinged rod 531 will be driven to slide upward along the inner wall of the support platform body 1, thereby shortening the distance between the receiving plate and the sheet metal sample. At the same time, due to the movement of the circular support block 51, the sheet metal sample without support will naturally fall to the receiving plate below due to gravity.

[0071] It is worth emphasizing that the thin-walled sheet metal laser cutting anti-deformation device also has the following advantages:

[0072] Advantage 1: During the placement of the thin-walled sheet metal, due to its thin thickness, it is inevitable that bulges or unevenness will appear on the surface. The synchronous movement away of several T-shaped supporting plates 2322 not only expands the supporting area of the thin-walled sheet metal but also effectively eliminates the surface unevenness during placement by cooperating with the downward flattening work of the flattening shaft 2233. After the flattening work, the electromagnetic fixation of the electromagnets at the four corners ensures that the thin-walled sheet metal will not retract during the subsequent processing, significantly reducing the deformation of the thin-walled sheet metal during placement and ensuring the laser cutting accuracy in the later stage.

[0073] Advantage 2: The sliding connection is adopted between the loop-shaped bearing platform 521 and the T-shaped plate 522. During the laser cutting operation, the loop-shaped bearing platform 521 and the T-shaped plate 522 slide alternately to complete the switching of the support for the lower surface of the thin-walled sheet metal, avoiding direct irradiation of the laser beam on the loop-shaped bearing platform 521 and causing damage. At the same time, during the movement of the loop-shaped bearing platform 521, it pushes down the two top plates inside the loop-shaped supporting block 51 to deform them and generate a rectangular area with the lower surface of the thin-walled sheet metal. Through this area, the heat dissipation effect of the laser cutting operation is improved, avoiding excessive heat in the cutting area and causing too high heat influence on the cut part of the sheet metal sample.

[0074] Advantage 3: During the cutting of the sheet metal by the laser cutting head 31, several matching plates 323 change their positions and move away synchronously along the surface of the sheet metal. During the moving-away process, the several matching plates 323 enclose a bowl-shaped area with an opening facing down by stretching the elastic bands. Through this bowl-shaped area, the ejection of sparks during the cutting of the upper surface of the sheet metal is significantly reduced, effectively preventing the fine metal chips in the sparks from scratching the uncut area on the upper surface of the sheet metal. The angular deviation between the matching plates 323 and the rollers 322 further performs the downward flattening work on the cutting position of the sheet metal, improving the laser cutting accuracy. After the cutting is completed, when a small amount of sheet metal samples cannot be separated from the sheet metal due to small connecting points, the matching plates 323 drive the rollers 322 to move upward to roll and press the cut sheet metal samples so that they can be separated from the sheet metal.

[0075] Advantage 4: During the downward movement of the loop-shaped bearing platform 521, a certain rectangular interval is generated with the lower surface of the sheet metal, which can not only improve the heat dissipation effect during the cutting operation but also effectively isolate the sparks generated during the laser cutting operation through this rectangular area, enabling the metal chips to enter the rectangular area and fall on the smooth surface of the loop-shaped bearing platform 521. Through the isolation of the rectangular area, it effectively prevents the metal chips in the sparks from scratching the lower surface of the sheet metal, further improving the smoothness and accuracy of the cutting surface.

[0076] Advantage Five: During the alternating movement of the loop-shaped bearing platform 521 and the conical support rod 523, the metal chips adhering to the outer wall of the conical support rod 523 during the cutting process are effectively scraped off through the cooperation between the conical groove formed on the clamping plate 5211 and the outer wall of the conical support rod 523, avoiding the situation of unstable sheet metal support caused by the accumulation of metal chips. When the clamping plate 5211 is pushed, the two adjacent square plates 5212 push against each other and the included angle gradually decreases, causing the metal chips remaining on the upper surface of the square plate 5212 to slide into the through groove, thereby completing the collection of metal chips and preventing long-term accumulation.

[0077] Advantage Six: During the laser cutting head 31 cutting the sheet metal, the gas ejected upward is used to cool the cut sheet metal, effectively reducing the heat emission during the cutting process and accelerating the cooling of the sheet metal sample. Due to the movement of the loop-shaped supporting block 51, the unsupported sheet metal sample will naturally fall to the lower material receiving plate under the action of gravity. The gas can not only accelerate the cooling of the sheet metal sample, but also slow down the falling speed of the sheet metal sample, thereby reducing the probability of damage to the sheet metal sample.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A thin-walled sheet metal laser cutting anti-deformation device based on an electromagnetic auxiliary structure, characterized in that, Comprising: Support table body (1); Anti-deformation mechanism (2), the anti-deformation mechanism (2) includes two mounting platforms (21) fixedly arranged on the left and right side walls of the support table body (1), an adjustment group (22) is slidably arranged between the two mounting platforms (21), and an auxiliary group (23) is arranged inside the support table body (1); Support equipment body (3), a laser cutting head (31) is slidably mounted on the support equipment body (3), and a cooperation group (32) is mounted on the laser cutting head (31); Sliding table (4), two sliding tables (4) are provided and fixedly mounted on the left and right side walls at the rear of the support table body (1), sliding grooves are formed on both sliding tables (4), and a driving group (41) is arranged inside the sliding grooves; Support part (5), the support part (5) includes a plurality of U-shaped supporting blocks (51) slidably arranged inside the support table body (1) through electric sliders, a support group (52) is cooperatively mounted inside the U-shaped supporting blocks (51), and a material receiving group (53) is mounted between adjacent two U-shaped supporting blocks (51); Wherein, the adjustment group (22) includes a mounting plate (221) slidably arranged between the two mounting platforms (21), threaded rods (222) with lower end faces rotatably connected to the two mounting platforms (21) are threadedly connected to both ends of the mounting plate (221), and a flattening part (223) is further arranged on the lower end face at the central position of the mounting plate (221); Wherein, the auxiliary group (23) includes a rotating shaft (231) fixedly connected to the output shaft of an external motor, and a supporting part (232) that cooperates with the flattening part (223) is fixedly arranged on the upper end face of the rotating shaft (231); The support group (52) includes a U-shaped bearing platform (521) slidably arranged inside the U-shaped supporting block (51) through a spring, a T-shaped plate (522) is slidably arranged inside the U-shaped bearing platform (521), and a plurality of supporting groups are fixedly arranged on the upper end face of the T-shaped plate (522), and each supporting group includes three conical support rods (523); Three clamping groups are slidably arranged inside the U-shaped bearing platform (521) in the front-rear direction, each clamping group includes two clamping plates (5211) with conical grooves formed therein and clamping the corresponding conical support rods (523), the two clamping plates (5211) in the same group are connected by a spring, and a plurality of collection groups are further arranged inside the U-shaped bearing platform (521), and each collection group includes two square plates (5212) with a V-shaped position and through grooves formed on the end faces, and the two square plates (5212) are respectively connected to the clamping plates (5211) through torsion springs.

2. The anti-deformation device for laser cutting of thin-walled sheet metal based on an electromagnetic auxiliary structure according to claim 1, characterized in that: The flattening part (223) includes a hexagonal platform (2231) rotatably arranged on the lower end face of the mounting plate (221) through a bearing, a flattening plate (2232) is fixedly arranged on the outer wall of the hexagonal platform (2231) along the circumferential direction through a tension spring, and a flattening shaft (2233) is rotatably arranged at the bottom end of the flattening plate (2232).

3. The anti-deformation device for laser cutting of thin-walled sheet metal based on an electromagnetic auxiliary structure according to claim 1, wherein: The supporting member (232) includes an adjusting disc (2321) fixedly arranged on the upper end face of the rotating shaft (231). A plurality of arc-shaped grooves are formed in the circumferential direction on the end face of the adjusting disc (2321). A round rod is slidably arranged inside the arc-shaped groove. A T-shaped supporting plate (2322) is fixedly arranged on the upper end face of the round rod. A connecting rod (2323) slidably connected to the supporting platform body (1) is fixedly arranged on the lower end face of the T-shaped supporting plate (2322). The lower end face of the round rod is fixedly connected to the connecting rod (2323) through a strip-shaped plate.

4. A thin-walled sheet metal laser cutting anti-deformation device based on an electromagnetic auxiliary structure according to claim 1, characterized in that: The material holding group (53) includes a plurality of hinge rods (531) arranged inside the supporting platform body (1) and sliding in the up-and-down direction. Two support plates (532) respectively fixedly connected to the corresponding loop-shaped supporting blocks (51) are hinged to the circumferential outer wall of the hinge rod (531) in a V shape. Two material receiving plates are placed in cooperation between the two support plates (532). The two material receiving plates are connected by a torsion spring. A plurality of circular through grooves extending in the left-and-right direction are formed in the end faces of the support plate (532) and the material receiving plate.

5. The anti-deformation device for laser cutting of thin-walled sheet metal based on an electromagnetic auxiliary structure according to claim 1, characterized in that: The driving group (41) includes electric sliders slidably arranged inside the two sliding grooves. The upper end of the electric slider is fixedly connected to the supporting equipment body (3). Two L-shaped telescopic blocks (411) and a square plate (412) located between the two L-shaped telescopic blocks (411) are fixedly arranged on the lower end face of the electric slider. A cylindrical rod penetrating the supporting platform body (1) is rotatably connected to the end face of the square plate (412). A gear (413) is fixedly arranged inside the supporting platform body (1) and at the top of the cylindrical rod. A rack (414) meshing and driving with the gear (413) is fixedly arranged on the upper end faces of the horizontal sections of the two L-shaped telescopic blocks (411). Connectors (415) are respectively arranged on the end faces of the two racks (414).

6. The anti-deformation device for laser cutting of thin-walled sheet metal based on an electromagnetic auxiliary structure according to claim 5, characterized in that: The connector (415) includes a connecting plate (4151) sliding in the up-and-down direction and having a sliding groove formed inside. Two connecting plates (4151) are arranged and distributed in the up-and-down direction inside the supporting platform body (1). The inner part of the upper connecting plate (4151) is respectively slidably connected to a plurality of loop-shaped bearing platforms (521) and the front rack (414). The inner part of the lower connecting plate (4151) is respectively slidably connected to a plurality of T-shaped plates (522) and the rear rack (414).

7. An anti-deformation device for laser cutting of thin-walled sheet metal based on an electromagnetic assistance structure according to claim 1, characterized in that: The matching group (32) includes an annular ring (321) rotatably sleeved on the outer wall of the laser cutting head (31). A plurality of rectangular grooves are formed in the circumferential direction on the lower end face of the annular ring (321) and extend upward. A matching plate (323) with a roller (322) at the lower end face is arranged inside the rectangular groove through a torsion spring. An expansion band is connected between adjacent matching plates (323).

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