High-energy beam positioning metal cutting equipment for steel structural section

Abstract

The application discloses a high-energy beam positioning metal cutting equipment for steel structural section, which comprises a gantry moving frame, a longitudinal moving table, a high-energy beam cutting head, a plurality of rows of supporting toothed plates and a composite avoiding mechanism. The longitudinal moving table is provided with a slotted cam guide rail, and the composite avoiding mechanism comprises a lifting slide, a transverse moving mounting base, a follower wheel, a supporting wheel, a rack guiding seat, a turnover rack and a turnover gear. When the slotted cam guide rail moves, the follower wheel drives the transverse moving mounting base to move transversely, so that the turnover rack drives the supporting toothed plate to be preliminarily turned over; then the supporting wheel is switched to the slotted cam guide rail from the fixed supporting rail, drives the supporting toothed plate to descend and continue to turn over, and the automatic avoiding of the cutting area is realized, and the ablation and slag bonding of the supporting toothed plate are reduced.

Description

Technical Field

[0001] This invention relates to the technical field of steel structure profile processing and high-energy beam cutting equipment, and particularly to a high-energy beam positioning metal cutting equipment for steel structure profiles. Background Technology

[0002] Steel plates, structural steel sections, and other steel structural profiles typically require high-energy beam cutting methods such as plasma cutting or laser cutting during production and processing. Existing high-energy beam cutting equipment generally includes a gantry frame, a high-energy beam cutting head, and a cutting worktable to support the steel plates to be cut.

[0003] To ensure stable support for steel plates of different sizes, multiple rows of support teeth are typically spaced apart on the cutting table. The upper edge of each support tooth forms multiple upward-facing support teeth, and the steel plate rests on the tops of these teeth. When the high-energy beam cutting head cuts the steel plate according to the set trajectory, the high-temperature plasma arc, laser beam, flame, and downward-spraying molten metal can easily act directly on the support teeth below the cutting path.

[0004] Because the position of the support teeth is fixed, when the cutting trajectory coincides with or is close to the support teeth, the support teeth are prone to problems such as ablation, melting, deformation, and slag adhesion. After long-term use, the height of each support tooth becomes inconsistent, which can easily lead to unstable support of the steel plate and increase the frequency of replacement of the support teeth and equipment maintenance costs.

[0005] Existing technologies also include solutions that use electric actuators, pneumatic cylinders, or hydraulic cylinders to drive the support components downwards. However, these solutions involve a large number of support toothed plates on the cutting table. If each row of support toothed plates is equipped with an independent drive unit and position detection element, not only will the equipment cost be high, but the control circuitry will also be complex. In cutting environments with high temperatures, dust, and molten slag, electrical and drive components are also prone to failure.

[0006] Therefore, it is necessary to design a metal cutting device that can automatically drive the support toothed plate to descend and flip to avoid the high-energy beam cutting head when it approaches the corresponding support toothed plate by utilizing the cutting device's own movement. Summary of the Invention

[0007] The present invention aims to at least solve the problems in existing high-energy beam cutting equipment, such as the support tooth plate being easily eroded by high-energy beams and molten metal, and the complex structure, high cost, and inconvenient maintenance caused by the row-by-row configuration of independent drive components.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides a high-energy beam positioning metal cutting device for steel structure profiles, including a gantry moving frame, a longitudinal traveling track, a support rail fixing frame, a longitudinal moving table slidably arranged on the longitudinal traveling track, a high-energy beam cutting head arranged on the gantry moving frame, and multiple rows of support toothed plates spaced apart along the extension direction of the longitudinal traveling track. The gantry moving frame is connected to the longitudinal moving table so as to move along the longitudinal traveling track with the longitudinal moving table.

[0009] Each support toothed plate has a composite avoidance mechanism at both ends, and the composite avoidance mechanisms at both ends of the same support toothed plate operate synchronously. The composite avoidance mechanism includes a slide base, a lifting slide, a transverse mounting base, a rack guide seat, a follower wheel, a support wheel, a tilting rack, and a tilting gear.

[0010] The lifting slide is slidably mounted vertically on the slide base, and the transverse mounting seat is slidably mounted transversely on the lifting slide. Both the follower wheel and the support wheel are rotatably mounted on the transverse mounting seat. Fixed support rails, corresponding to multiple rows of support toothed plates, are fixedly installed at intervals on the rail fixing frame. Under normal support conditions, the support wheels rest on the corresponding fixed support rails to keep the lifting slide in the upper support position.

[0011] The support toothed plate is hinged to the lifting slide via a toothed plate hinge shaft. The tilting gear is fixedly mounted at the end of the support toothed plate and is coaxial with the toothed plate hinge shaft. The tilting rack is slidably mounted on the lifting slide in the vertical direction and meshes with the tilting gear, so that the vertical movement of the tilting rack drives the support toothed plate to tilt around the toothed plate hinge shaft.

[0012] The transverse mounting base is provided with a guide seat groove extending vertically. One end of the rack guide seat is provided with a guide seat slide, which is slidably embedded in the guide seat groove and is limited and matched with the opposite groove wall of the guide seat groove in the transverse direction. The slide base is provided with a guide hole extending laterally, and the rack guide seat slides laterally through the guide hole.

[0013] Therefore, when the transverse mounting seat moves laterally, the rack guide seat can move laterally along the guide hole through the limiting cooperation between the guide seat slide groove and the guide seat slide. When the lifting slide and the transverse mounting seat move vertically, the guide seat slide can slide relative to the guide seat slide groove, so that the transverse mounting seat can move vertically relative to the rack guide seat, thereby avoiding interference of the transverse guiding structure of the rack guide seat with the descent action of the lifting slide.

[0014] The rack guide seat is provided with a rack drive groove, and the flip rack is provided with a rack drive pin, which is slidably embedded in the rack drive groove. The rack drive groove is inclined or bent relative to the vertical sliding direction of the flip rack, so that when the rack guide seat moves laterally, it can drive the flip rack to move in the vertical direction through the rack drive groove and the rack drive pin.

[0015] A grooved cam guide rail is fixedly installed on the longitudinal moving platform and moves synchronously with it. The grooved cam guide rail has a follower wheel guide groove that cooperates with the follower wheel, and a support guide surface that cooperates with the support wheel.

[0016] The follower wheel guide groove includes a lateral guide section, a lateral holding section, and a reset guide section. The lateral guide section extends obliquely relative to the longitudinal movement direction of the slotted cam guide rail, and is used to guide the follower wheel and the lateral mounting seat to generate lateral displacement; the lateral holding section is used to hold the lateral mounting seat in the position after lateral displacement; and the reset guide section is used to guide the follower wheel and the lateral mounting seat back to the initial lateral position.

[0017] The support guide surface of the grooved cam guide rail includes a support switching section, a descending guide section, a clearance holding section, and an ascending reset section. The support switching section is used to receive the support wheel that moves laterally into the fixed support rail; the descending guide section is used to guide the support wheel to descend; the clearance holding section is used to keep the support wheel in a low position; and the ascending reset section is used to guide the support wheel to ascend and reset.

[0018] When the longitudinal moving stage drives the grooved cam guide rail to approach the corresponding support tooth plate, the follower wheel first enters the transverse guide section of the follower wheel guide groove, and drives the transverse mounting seat to move laterally. The transverse mounting seat drives the rack guide seat to move laterally along the guide hole through the guide seat slide groove and the guide seat slide table. The rack guide seat further drives the flip rack to move vertically through the rack drive groove and the rack drive pin, so that the flip gear drives the support tooth plate to flip in advance.

[0019] As the lateral mounting base continues to move laterally, the support wheel switches from the fixed support rail to the support switching section of the grooved cam guide rail, and descends along the descending guide section. When the support wheel descends, the lateral mounting base drives the lifting slide and the support toothed plate to descend as a whole; at the same time, the support toothed plate continues to rotate under the action of the rotating rack and rotating gear, thus completing a compound avoidance action that combines descent and rotation.

[0020] After the support wheel enters the avoidance and holding section, the support tooth plate remains in the downward and flipped state; when the grooved cam guide rail continues to move and leaves the corresponding support tooth plate, the support wheel rises along the rising reset section, and the follower wheel moves along the reset guide section, so that the lifting slide, the transverse mounting seat, the flipping rack and the support tooth plate are reset in sequence.

[0021] Furthermore, a toothed plate support is provided below the supporting toothed plate, and the supporting toothed plate rests on the toothed plate support in the normal supporting state. The supporting toothed plate is provided with an upper release rounded portion, and the toothed plate support is provided with a lower release rounded portion corresponding to the upper release rounded portion, so that the supporting toothed plate can smoothly detach from the toothed plate support during the pre-rotation process.

[0022] Furthermore, at least one side of the supporting tooth plate is provided with a high-temperature resistant ceramic protective layer, and the high-temperature resistant ceramic protective layer is spaced apart from the tooth tip of the supporting tooth plate; the side with the high-temperature resistant ceramic protective layer forms an inclined slag guiding surface so that the cutting slag falling to this side slides down under the action of gravity.

[0023] Compared with the prior art, the present invention has the following beneficial effects: (1) Achieve automatic positioning and avoidance of the support toothed plates. The grooved cam guide rail moves synchronously with the longitudinal moving table and the gantry moving frame, which can trigger the support toothed plates adjacent to the cutting head to descend and flip in sequence. There is no need to set up motors, cylinders or electric push rods for each row of support toothed plates, which reduces the number of driving components, sensors and control lines.

[0024] (2) The sequence of avoidance actions is reasonable and stable. The follower wheel first drives the transverse mounting seat to move laterally, so that the flip rack drives the support tooth plate to flip in advance and release the support engagement with the tooth plate support seat; then the support wheel completes the track change and drives the lifting slide to descend, so that the support tooth plate flips synchronously during the descent, avoiding the support tooth plate being forcibly pulled down under load.

[0025] (3) It takes into account both lateral force transmission and vertical lifting. The guide seat groove and the guide seat slide are matched at the upper limit in the lateral direction, so that the lateral moving mounting seat can reliably drive the rack guide seat to move laterally; during the lifting process, the guide seat slide can slide vertically along the guide seat groove, thereby realizing the decoupling of lateral transmission and vertical movement, reducing mechanism interference and jamming.

[0026] (4) Improve the ablation resistance and slag removal capacity of the support tooth plate. After the support tooth plate descends and flips, it can move away from the main action area of ​​the high-energy beam and molten metal. The high-temperature resistant ceramic protective layer on its side can reduce the fusion adhesion between the cutting slag and the metal tooth plate, and guide the slag downwards using the inclined slag guiding surface; the ceramic protective layer avoids the bearing area of ​​the tooth top, and can also reduce the wear caused by the friction of the plate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the composite obstacle avoidance mechanism of the present invention.

[0029] Figure 3 This is a schematic diagram of the combination of the composite obstacle avoidance mechanism and the supporting toothed plate of the present invention.

[0030] Figure 4 This is a schematic diagram of the combination of the composite obstacle avoidance mechanism and the fixed support rail of the present invention.

[0031] Figure 5 This is a schematic diagram showing the coordination of the transverse mounting base, support wheel, and follower wheel.

[0032] Figure 6 This is a schematic diagram showing the cooperation between the transverse mounting base and the lifting slide of the present invention.

[0033] Figure 7 This is a schematic diagram of the rack guide seat and the flip rack of the present invention.

[0034] Figure 8 This is a schematic diagram of the fit between the toothed plate and the toothed plate support seat of the present invention.

[0035] Figure 9 This is a schematic diagram of the connection structure between the lifting slide and the supporting toothed plate of the present invention.

[0036] Figure 10 This is a schematic diagram of the grooved cam guide rail of the present invention.

[0037] Figure 11 This is a top view of the grooved cam guide rail of the present invention.

[0038] Figure 12 This is a schematic diagram showing the connection between the grooved cam guide rail and the longitudinal moving table of the present invention.

[0039] 1. Gantry moving frame; 2. Longitudinal traveling track; 3. Support rail fixing frame; 4. Longitudinal moving table; 5. High-energy beam cutting head; 6. Lifting slide; 7. Supporting gear plate; 8. Supporting guide surface; 9. Gear plate support seat; 10. Gear plate hinge shaft; 11. Reversing gear; 12. Upper detachment rounded corner; 13. Mounting base; 14. Slide base; 15. Lateral mounting seat; 16. Follower wheel; 17. Support wheel; 18. Fixed support rail; 19. Rack guide seat; 20. Rack drive slot; 21. Reversing rack; 22. Rack drive pin ; 23. Groove cam guide rail; 24. Guide seat slide groove; 25. Follower wheel guide groove; 26. Support switching section; 27. Lowering guide section; 28. Avoidance holding section; 29. ​​Rising reset section; 30. Lifting guide groove; 31. Lower disengagement rounded corner; 32. Lateral guide column; 33. Guide seat slide; 34. Rack slide groove; 35. Reset spring; 36. Lateral guide hole; 37. Synchronous connector; 38. Lateral guide section; 39. Lateral holding section; 40. Reset guide section; 41. Guide hole; 101. Composite avoidance mechanism. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings. It should be understood that the following embodiments are used to illustrate the technical solutions of the present invention, and not to limit the scope of protection of the present invention.

[0041] In this embodiment, the extension direction of the longitudinal travel track 2 is defined as longitudinal, the direction perpendicular to the longitudinal direction and parallel to the plate support plane is defined as transverse, and the direction perpendicular to the plate support plane is defined as vertical.

[0042] The high-energy beam positioning metal cutting equipment for steel structure profiles described in this embodiment includes a gantry moving frame 1, a longitudinal traveling track 2, a support rail fixing frame 3, a longitudinal moving table 4, a high-energy beam cutting head 5, a multi-row support toothed plate 7, and a mounting base 13.

[0043] The gantry moving frame 1 has longitudinal moving tables 4 fixed on both sides, and longitudinal traveling rails 2 are respectively set on both sides of the cutting bed. The longitudinal moving tables 4 are slidably set on the corresponding longitudinal traveling rails 2. When the longitudinal moving tables 4 move along the longitudinal traveling rails 2, they drive the gantry moving frame 1 to move longitudinally along the cutting bed.

[0044] The high-energy beam cutting head 5 is mounted on the gantry frame 1 and can move laterally along the gantry frame 1. The high-energy beam cutting head 5 can be a plasma cutting head or a laser cutting head to cut steel plates, steel sections or other steel structural profiles according to the cutting trajectory set by the CNC system.

[0045] Multiple rows of support toothed plates 7 are spaced apart along the longitudinal direction of the travel track 2. Each row of support toothed plates 7 extends laterally, and the upper edge of each support toothed plate 7 forms multiple spaced support teeth. The tooth tips of the multiple rows of support toothed plates 7 together form a plate support plane. The rail fixing frame 3 is arranged longitudinally on both sides of the multiple rows of support toothed plates 7, and multiple fixed support rails 18 are fixedly installed on the rail fixing frame 3 at intervals.

[0046] Each of the supporting toothed plates 7 is provided with a composite avoidance mechanism 101 at both ends. The composite avoidance mechanism 101 includes a slide base 14, a lifting slide 6, a transverse mounting base 15, a rack guide seat 19, a follower wheel 16, a support wheel 17, a flip rack 21, and a flip gear 11. The longitudinal moving table 4 is provided with a grooved cam guide rail 23 for sequentially triggering each composite avoidance mechanism 101.

[0047] The slide base 14 is fixedly mounted on the mounting base 13. The slide base 14 is provided with a lifting guide groove 30 extending in the vertical direction. The lifting slide 6 is slidably embedded in the lifting guide groove 30 to restrict the movement of the lifting slide 6 in the vertical direction.

[0048] The transverse mounting base 15 is slidably mounted on the lifting slide 6. The lifting slide 6 is provided with a transverse guide post 32. The transverse mounting base 15 is provided with a transverse guide hole 36, and the transverse guide post 32 slides through the transverse guide hole 36. A return spring 35 abuts against the outer end of the transverse guide post 32 and the end wall of the transverse guide hole 36. The lifting slide 6 and the transverse mounting base 15 mutually limit each other in the vertical direction, so that when the transverse mounting base 15 moves up and down, it can drive the lifting slide 6 to move up and down synchronously.

[0049] The grooved cam guide rail 23 is fixedly mounted on the longitudinal moving table 4 via a synchronous connector 37. When the longitudinal moving table 4 moves along the longitudinal traveling track 2, the grooved cam guide rail 23 moves longitudinally synchronously with the gantry moving frame 1 and the high-energy beam cutting head 5.

[0050] Both the follower wheel 16 and the support wheel 17 are rotatably mounted on the transverse mounting base 15. The follower wheel 16 is located at the lower part of the transverse mounting base 15, and its axis of rotation is set in the vertical direction. The support wheel 17 is located on the side wall of the transverse mounting base 15, and its axis of rotation is set in the horizontal direction. In the normal support state, the support wheel 17 is supported on the fixed support rail 18, and the transverse mounting base 15 holds the lifting slide 6 in the upper position.

[0051] The end of the supporting toothed plate 7 is provided with a toothed plate hinge shaft 10 and is hinged to the lifting slide 6. The supporting toothed plate 7 can move vertically with the lifting slide 6 and can rotate relative to the lifting slide 6 around the toothed plate hinge shaft 10. The tilting gear 11 is fixedly disposed at the end of the supporting toothed plate 7 and is coaxially disposed with the toothed plate hinge shaft 10. When the tilting gear 11 rotates, the tilting gear 11 drives the supporting toothed plate 7 to rotate synchronously around the toothed plate hinge shaft 10. The lifting slide 6 is provided with a rack groove 34 extending vertically. The tilting rack 21 is slidably disposed in the rack groove 34 and meshes with the tilting gear 11.

[0052] The transverse mounting base 15 is provided with a guide seat groove 24 extending vertically on the side near the slide base 14. One end of the rack guide seat 19 is provided with a guide seat slide 33, which is slidably embedded in the guide seat groove 24. The guide seat slide 33 is in a limiting fit with the relative groove wall of the guide seat groove 24 in the transverse direction, so that when the transverse mounting base 15 moves laterally, it can drive the rack guide seat 19 to move laterally synchronously, and allow the transverse mounting base 15 to move vertically relative to the rack guide seat 19. The slide base 14 is provided with a guide hole 41 extending laterally, and the rack guide seat 19 slides laterally through the guide hole 41.

[0053] A rack drive groove 20 is provided on the rack guide seat 19. The rack drive groove 20 extends laterally and has a vertical height difference in its extending direction. A rack drive pin 22 is provided on the flip rack 21, and the rack drive pin 22 is slidably embedded in the rack drive groove 20.

[0054] When the transverse mounting base 15 drives the rack guide seat 19 to move laterally, the tilting rack 21 is vertically guided by the rack slide 34, and the groove wall of the rack drive groove 20 applies a vertical force to the tilting rack 21 through the rack drive pin 22, causing the tilting rack 21 to move vertically. The tilting rack 21 further drives the tilting gear 11 to rotate, thereby causing the support tooth plate 7 to tilt.

[0055] A toothed plate support 9 is provided below the toothed plate 7. The toothed plate support 9 is fixedly mounted on the cutting bed.

[0056] Under normal support conditions, the lower part of the support tooth plate 7 is supported on the tooth plate support seat 9. The load of the plate to be cut is transferred to the tooth plate support seat 9 and the cutting bed through the support tooth plate 7, so as to prevent the tilting gear 11, tilting rack 21 and support wheel 17 from bearing the weight of the plate for a long time.

[0057] The lower part of the supporting toothed plate 7 is provided with an upper detachment rounded corner portion 12, and the upper part of the toothed plate support 9 is provided with a lower detachment rounded corner portion 31.

[0058] When the rotating rack 21 drives the support tooth plate 7 to start rotating, the upper detached rounded corner portion 12 rotates or slides relative to the surface of the lower detached rounded corner portion 31, so that the support tooth plate 7 gradually detaches from the tooth plate support seat 9, avoiding rigid interference between the support tooth plate 7 and the right-angle edge of the tooth plate support seat 9.

[0059] The grooved cam guide rail 23 is provided with a follower wheel guide groove 25 and a support guide surface 8. The follower wheel 16 is used to enter the follower wheel guide groove 25 of the grooved cam guide rail 23 and rolls with the side wall of the follower wheel guide groove 25.

[0060] The follower wheel guide groove 25 includes a transverse guide section 38, a transverse holding section 39 and a reset guide section 40 that are sequentially connected along the moving direction of the grooved cam guide rail 23.

[0061] The transverse guide section 38 extends longitudinally while generating a lateral offset. When the follower wheel 16 rolls along the transverse guide section 38, the groove wall of the transverse guide section 38 applies a lateral force to the follower wheel 16, causing the follower wheel 16 and the transverse mounting base 15 to generate a lateral displacement.

[0062] The transverse holding section 39 extends longitudinally. When the follower wheel 16 enters the transverse holding section 39, the transverse position of the follower wheel 16 remains unchanged, keeping the transverse mounting base 15 in the position after the transverse movement, so as to ensure that the support wheel 17 can be stably switched from the fixed support rail 18 to the grooved cam guide rail 23. The longitudinal moving stage 4 drives the grooved cam guide rail 23 to move. When the grooved cam guide rail 23 passes the side of the fixed support rail 18, the follower wheel 16 enters the follower wheel guide groove 25.

[0063] The reset guide section 40 is tilted or bent relative to the transverse guide section 38 to guide the follower wheel 16 and the transverse mounting base 15 to return to their lateral position when the grooved cam guide rail 23 leaves the corresponding compound avoidance mechanism 101.

[0064] The support guide surface 8 of the grooved cam guide rail 23 includes a support switching section 26, a descending guide section 27, an avoidance holding section 28, and an ascending reset section 29.

[0065] The height of the support switching section 26 corresponds to the support height of the fixed support rail 18, so that the support wheel 17 can be smoothly moved from the fixed support rail 18 into the support switching section 26. When the follower wheel 16 is guided laterally by the follower wheel guide groove 25, the follower wheel 16 drives the transverse mounting seat 15 to move laterally, and the support wheel 17 moves laterally synchronously with the transverse mounting seat 15, thereby gradually separating from the fixed support rail 18 and entering the support switching section 26 of the grooved cam guide rail 23.

[0066] The descending guide section 27 extends downward or in an arc from the support switching section 26. When the support wheel 17 rolls along the descending guide section 27, the support wheel 17, the transverse mounting base 15, and the lifting slide 6 descend synchronously.

[0067] The avoidance holding section 28 is located at the lower end of the descending guide section 27 and extends longitudinally to keep the support wheel 17 in a low position within a set longitudinal stroke, so that the support tooth plate 7 remains in the avoidance state after descending and flipping.

[0068] The rising reset section 29 extends upward from the avoidance holding section 28 and is used to guide the support wheel 17 to rise gradually, and to restore the lifting slide 6 and the support tooth plate 7 to the normal support height.

[0069] In a preferred embodiment, the two ends of the grooved cam guide rail 23 adopt symmetrical guide profiles, so that when the longitudinal moving table 4 moves in two opposite directions, it can complete the descent and repositioning of the support tooth plate 7.

[0070] The longitudinal relative positions of the follower wheel guide groove 25 and the support guide surface 8 are set such that the follower wheel 16 is first acted upon by the transverse guide section 38, and the support wheel 17 subsequently enters the support switching section 26 and the descending guide section 27. This ensures that the support toothed plate 7 is pre-flipped and disengaged from the toothed plate support 9 before descending as a whole.

[0071] At least one side of the supporting toothed plate 7 is provided with a high-temperature resistant ceramic protective layer. The high-temperature resistant ceramic protective layer is spaced apart from the tooth tip of the supporting toothed plate 7, thereby preventing the steel structure profile to be cut from directly pressing or rubbing against the high-temperature resistant ceramic protective layer.

[0072] The high-temperature resistant ceramic protective layer is used to shield the high-temperature molten cutting slag that splashes or falls downwards from the cutting position, reducing heat conduction, ablation, and molten adhesion that occur when the molten cutting slag comes into direct contact with the metal support tooth plate 7. The side of the support tooth plate 7 with the high-temperature resistant ceramic protective layer extends obliquely from top to bottom, forming an oblique slag guiding surface. This allows the molten cutting slag falling onto the surface of the high-temperature resistant ceramic protective layer to slide downwards under gravity, reducing slag accumulation on the side of the support tooth plate 7. The high-temperature resistant ceramic protective layer can be a high-temperature resistant ceramic coating, or it can be an adhesive, embedded, or detachable ceramic protective sheet.

[0073] The working process of this invention is as follows.

[0074] Normal support status: When the high-energy beam cutting head 5 has not yet approached a certain row of support tooth plates 7, the grooved cam guide rail 23 separates from the follower wheel 16 and support wheel 17 corresponding to that row of support tooth plates 7.

[0075] The transverse mounting base 15 is held in its initial transverse position by the return spring 35, the support wheel 17 is supported on the corresponding fixed support rail 18, and the lifting slide 6 is held in the upper position.

[0076] The flip rack 21 is at its initial height, and the support tooth plate 7 is in a basically vertical support position, resting on the tooth plate support seat 9. Multiple rows of support tooth plates 7 work together to support the steel structure profile to be cut.

[0077] II. Pre-flipping and disengagement stage: The longitudinal moving stage 4 drives the gantry moving frame 1, the high-energy beam cutting head 5, and the grooved cam guide rail 23 to move longitudinally. When the high-energy beam cutting head 5 approaches a row of support toothed plates 7, the follower wheel guide groove 25 of the grooved cam guide rail 23 gradually engages with the corresponding follower wheel 16. The follower wheel 16 rolls along the transverse guide section 38 and generates lateral displacement under the action of the lateral groove wall of the transverse guide section 38, thereby driving the transverse mounting seat 15 to move laterally toward the slide base 14 relative to the lifting slide 6. When the transverse mounting seat 15 moves laterally, it drives the rack guide seat 19 to move synchronously. The rack drive groove 20 on the rack guide seat 19 pushes the flip rack 21 upward through the rack drive pin 22.

[0078] When the rotating rack 21 moves upward, it drives the rotating gear 11 to rotate, and the rotating gear 11 further drives the support tooth plate 7 to begin rotating around the tooth plate hinge axis 10. When the support tooth plate 7 rotates, the upper disengagement rounded corner 12 slides relative to the lower disengagement rounded corner 31, so that the support tooth plate 7 gradually releases the support engagement with the tooth plate support seat 9. Therefore, the support tooth plate 7 completes pre-rotation and load disengagement before the whole body descends, so as to avoid the tooth plate support seat 9 from hindering the descent of the support tooth plate 7.

[0079] III. Support for Rail Replacement Stage: As the transverse mounting base 15 continues to move laterally, the support wheel 17 gradually detaches from the fixed support rail 18 and moves onto the support switching section 26 of the grooved cam guide rail 23.

[0080] At this time, the vertical support reference of the support wheel 17 is switched from the fixed support rail 18 to the grooved cam guide rail 23, and the vertical position of the lifting slide 6 is controlled by the support guide surface 8 of the grooved cam guide rail 23.

[0081] IV. Descent and Reversal Phase: The grooved cam guide rail 23 continues to move with the longitudinal moving table 4, and the support wheel 17 gradually descends along the descending guide section 27. Since the support wheel 17 is mounted on the transverse mounting seat 15, and the transverse mounting seat 15 and the lifting slide 6 are mutually limited in the vertical direction, the support wheel 17 can drive the transverse mounting seat 15 and the lifting slide 6 to descend synchronously when descending. The support toothed plate 7 is connected to the lifting slide 6 through the toothed plate hinge shaft 10, so the support toothed plate 7 descends as a whole with the lifting slide 6. At the same time, the tilting rack 21 still acts on the support toothed plate 7 through the tilting gear 11, so that the support toothed plate 7 continues to tilt during the descent.

[0082] Thus, the support tooth plate 7 completes a combined avoidance action of descent and flipping, causing its support teeth to quickly move away from the bottom surface of the steel structure profile and the area affected by the high-energy beam.

[0083] Avoidance and holding phase: When the support wheel 17 enters the avoidance holding section 28, the support wheel 17 remains in a low position, and the lifting slide 6 and the support toothed plate 7 remain in the lowered position. At the same time, the follower wheel 16 is located in the transverse holding section 39, and the transverse mounting seat 15 remains in the position after transverse movement, so that the tilting rack 21 and the support toothed plate 7 maintain the corresponding tilting angle.

[0084] At this time, the high-energy beam cutting head 5 can pass over or near the corresponding support tooth plate 7, and the high-energy beam and molten metal are not easily directly applied to the row of support tooth plates 7.

[0085] Ascending and lateral reset phases: After the high-energy beam cutting head 5 passes the corresponding support toothed plate 7, the support wheel 17 gradually rises along the rising reset section 29, driving the transverse mounting base 15, the lifting slide 6, and the support toothed plate 7 to rise as a whole. The follower wheel 16 moves along the reset guide section 40, and the transverse mounting base 15 returns to its initial position laterally under the combined action of the reset guide section 40 and the reset spring 35.

[0086] The transverse mounting base 15 drives the rack guide seat 19 to move in the opposite direction. The rack drive groove 20 drives the flip rack 21 to reset downward through the rack drive pin 22. The flip rack 21 drives the flip gear 11 to rotate in the opposite direction, so that the support plate 7 gradually returns to the normal support angle. The support wheel 17 switches back from the grooved cam guide rail 23 to the fixed support rail 18. The upper detachment rounded corner 12 of the support plate 7 rotates smoothly along the lower detachment rounded corner 31 and is supported on the plate support seat 9 again.

[0087] At this point, the row of support toothed plates 7 returns to its normal support state and waits for the grooved cam guide rail 23 to pass by again.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Equivalent substitutions or simple modifications made by those skilled in the art to the above structure, connection method, and driving form without departing from the concept of the present invention should all fall within the scope of protection of the present invention.

Claims

1. A high-energy beam positioning metal cutting device for steel structure profiles, characterized in that: It includes a gantry moving frame (1), a longitudinal walking track (2), a support rail fixing frame (3), a longitudinal moving platform (4) slidably disposed on the longitudinal walking track (2), and multiple rows of support tooth plates (7) spaced apart along the extension direction of the longitudinal walking track (2). The gantry moving frame (1) is connected to the longitudinal moving platform (4). At least one end of each of the support tooth plates (7) is provided with a composite avoidance mechanism (101), the composite avoidance mechanism (101) includes a slide base (14), a lifting slide (6), a transverse mounting base (15), a follower wheel (16), and a support wheel (17). The lifting slide (6) is slidably disposed on the slide base (14) in the vertical direction, and the transverse mounting seat (15) is slidably disposed on the lifting slide (6) in the transverse direction. The follower wheel (16) and the support wheel (17) are both rotatably disposed on the transverse mounting seat (15). The support rail fixing frame (3) is fixedly provided with fixed support rails (18) at intervals corresponding to the multiple rows of support tooth plates (7), and the support wheel (17) is supported on the corresponding fixed support rail (18) in the support state.

2. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 1, characterized in that: The composite avoidance mechanism (101) further includes a flip rack (21), a flip gear (11), and a rack guide seat (19). The support tooth plate (7) is provided with a tooth plate hinge shaft (10) and is hinged to the lifting slide (6). The flip gear (11) is fixedly set on the support tooth plate (7) and is coaxially set with the tooth plate hinge shaft (10). The flip rack (21) is slidably set on the lifting slide (6) in the vertical direction and meshes with the flip gear (11). The rack guide seat (19) is slidably set on the transverse mounting seat (15) and is connected to the flip rack (21) in a transmission.

3. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 1, characterized in that: The longitudinal moving stage (4) is fixedly provided with a grooved cam guide rail (23) that moves synchronously with it. The grooved cam guide rail (23) is provided with a follower wheel guide groove (25) that cooperates with the follower wheel (16) and a support guide surface (8) that cooperates with the support wheel (17).

4. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 2, characterized in that: The rack guide seat (19) is provided with a rack drive groove (20), and the flip rack (21) is provided with a rack drive pin (22), which is slidably embedded in the rack drive groove (20).

5. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 1, characterized in that: A toothed plate support seat (9) is provided below the toothed plate (7), and the toothed plate (7) is supported on the toothed plate support seat (9) in the supported state.

6. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 5, characterized in that: The support toothed plate (7) is provided with an upper detachment rounded corner (12), and the toothed plate support (9) is provided with a lower detachment rounded corner (31) corresponding to the upper detachment rounded corner (12).

7. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 3, characterized in that: The support guide surface (8) of the grooved cam guide rail (23) includes a support switching section (26), a descending guide section (27), an avoidance holding section (28), and an ascending reset section (29).

8. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 7, characterized in that: The follower wheel guide groove (25) of the grooved cam guide rail (23) includes a transverse guide section (38), a transverse holding section (39), and a reset guide section (40).

9. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 1, characterized in that: A transverse guide post (32) is provided between the lifting slide (6) and the transverse mounting base (15). The transverse mounting base (15) is provided with a transverse guide hole (36). The transverse guide post slides through the transverse guide hole (36). A return spring (35) is provided between the transverse guide post (32) and the transverse mounting base (15).

10. The high-energy beam positioning metal cutting equipment for steel structure profiles according to claim 4, characterized in that: The rack drive groove (20) extends at an angle or bend relative to the sliding direction of the flip rack (21) to convert the lateral movement of the rack guide seat (19) into the vertical movement of the flip rack (21).

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