A laser processing device and method for preventing damage to sheet metal parts

Abstract

This invention provides a laser processing apparatus and method for preventing damage to sheet metal parts. The apparatus includes a machine body with guide rails fixed on both sides of its top, the guide rails being arranged along the length of the machine body. A gantry frame is distributed along the width of the machine body, and a movable stage is slidably connected to the gantry frame. A rectangular support frame is slidably connected to the top of the support frame, and multiple protruding support serrated plates with equal spacing are fixed to the upper surface of the support frame. The support serrated plates hold the sheet metal parts. The apparatus also includes multiple lifting components, located at the bottom of the support frame. The top of each lifting component extends from the gap between two support serrated plates to lift the sheet metal parts, preventing the tips of the support serrated plates from scratching the sheet metal parts when they are moved. By lifting the sheet metal parts with the lifting components, scratches from the tips of the support serrated plates can be avoided when moving the sheet metal parts. During processing, the lifting components retract, allowing the sheet metal parts to rest on the support serrated plates.

Description

Technical Field

[0001] This invention relates to the field of sheet metal cutting, specifically to a laser processing device and method for preventing damage to sheet metal parts. Background Technology

[0002] Existing CNC laser cutting machine tools typically have a support serrated plate on the machine tool table to support sheet metal parts. This serrated plate consists of a large number of sharp teeth to reduce reflection interference during cutting and facilitate slag removal. However, in actual production processes, sheet metal parts often need to be manually handled or moved with the help of a robotic arm when loading, unloading, or adjusting their position.

[0003] Because the surface of the supporting serrated plate is covered with sharp teeth, it is very easy to cause scratches, indentations, or damage to the plating of sheet metal parts when they are placed or moved and come into contact with it. For metal sheets that have been sprayed, electroplated, or mirror-finished, this kind of surface damage not only affects the appearance of the finished product, but may also lead to quality problems in subsequent welding, electroplating and other processes.

[0004] Therefore, existing technologies still lack a structural design that can prevent the material from being scratched by the supporting sawtooth plate during loading, unloading and movement, so as to effectively balance scratch protection and processing stability. Summary of the Invention

[0005] In order to solve the problem that the support serrated plate can easily cause scratches, indentations or damage to the coating of sheet metal parts, the present invention provides a laser processing device and method to prevent damage to sheet metal parts.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] This invention provides a laser processing device for preventing damage to sheet metal parts, including a machine body. Guide rails are fixed on both sides of the top of the machine body and are arranged along the length of the machine body. A gantry frame is provided on the top of the machine body. The bottom two sides of the gantry frame are slidably connected to the two guide rails respectively, and the gantry frame is distributed along the width of the machine body. A moving stage is slidably connected to the gantry frame, and a cutting head is installed on the moving stage. A support platform is provided on one side of the machine body. A rectangular support frame is slidably connected to the top of the support platform. Multiple protruding support serrated plates are fixed on the upper surface of the support frame at equal intervals, and the support serrated plates are used to place sheet metal parts.

[0008] It also includes multiple lifting components, which are located at the bottom of the support frame. The top of the lifting components extends from the gap between two support serrated plates to lift the sheet metal parts and prevent the tips of the support serrated plates from scratching the sheet metal parts when they are moved.

[0009] By lifting the sheet metal parts with the lifting assembly, it is possible to avoid scratching the sheet metal parts at the tip of the supporting serrated plate when moving them. During processing, the lifting assembly retracts, allowing the sheet metal parts to rest on the supporting serrated plate.

[0010] In this technical solution, the lifting assembly includes a lifting drive unit. The top of the lifting drive unit is fixed to a support unit by a bearing vertical rod. The lifting unit drives the support unit to move upward, passing between two support serrated plates until it lifts the sheet metal part. The lifting drive unit is fixed on the mounting plate, and the mounting plate is fixed to the bottom of the bearing frame.

[0011] The support unit is installed on the surface of the support plate at the top of the support vertical rod, and the support vertical rod is fixed to the moving end at the top of the lifting drive unit.

[0012] In this technical solution, the support unit includes multiple support parts, which are fixedly or rotatably connected to the bearing plate. There are at most two support parts fixed to the bearing plate, and they are arranged parallel to the support serrated plate.

[0013] The support part rotatably connected to the bearing plate is connected to the drive component. The support part passing through the two support serrated plates rotates under the drive component, changing from a state parallel to the support serrated plates to a state perpendicular to the support serrated plates or tending to be perpendicular to the support serrated plates.

[0014] In this technical solution, the support part includes a bearing cylinder, which is fixed to the surface of the bearing plate or can rotate on the surface of the bearing cylinder. A support crossbar is fixed on the side wall of the bearing cylinder, and the end of the support crossbar is curved upward and fixedly connected to the outer sleeve. The inner part of the outer sleeve is filled with a rotating support ball.

[0015] In this technical solution, the driving component includes a driving part, the driving part includes a mounting rod, the mounting rod is fixed to the fixed end of the lifting driving unit or the mounting plate, the top of the mounting rod is provided with a driving rack distributed vertically, the driving rack is fixed to the connecting plate, and the connecting plate is fixed to the top of the mounting rod.

[0016] The driven part is mounted on the supporting vertical rod. The driven part moves upward with the supporting vertical rod, and after passing through the drive rack, it drives the support part connected to it to rotate.

[0017] The number of driving parts, driven parts, and support parts are the same, and they correspond one-to-one.

[0018] In this technical solution, the driven part includes a transmission gear that meshes with the corresponding drive rack. A first bevel gear is provided on one side of the transmission gear and is fixedly mounted coaxially therewith. A second bevel gear is provided on the top of the first bevel gear and meshes with it. A drive pulley is provided on the top of the second bevel gear and is fixedly mounted coaxially therewith. The drive pulley is connected to the driven pulley via a transmission belt. A transmission rod is fixed at the top center of the driven pulley. The transmission rod passes through a through groove through the bearing plate and is fixedly connected to the corresponding support part. That is, the transmission rod is fixedly connected to the bottom end of the bearing cylinder on the corresponding support part.

[0019] In this technical solution, the transmission gear is mounted on the bearing vertical rod via the first connecting frame, the second bevel gear is fixed on the bearing vertical rod via the second connecting frame, and the driven pulley is fixed on the bearing vertical rod via the third connecting frame.

[0020] When the upward-moving transmission gear reaches the drive rack, the meshing teeth push against each other, causing the transmission gear to rotate. The first bevel gear, coaxially fixed with the transmission gear, also rotates synchronously. The first bevel gear drives the second bevel gear to rotate, thus changing the transmission direction. The second bevel gear drives the drive pulley to rotate, which in turn drives the driven pulley to rotate via the transmission belt. The driven pulley, in turn, drives the corresponding bearing cylinder to rotate via the transmission rod, thereby causing the support part to rotate and unfold.

[0021] The deployable support increases the contact area between the lifting assembly and the sheet metal part. Simultaneously, the deployment of the support is powered by the lifting assembly itself.

[0022] In this technical solution, the support is also equipped with an air-cooled cooling component, which includes a jet section. The jet section is installed on the support and is connected to an air pump through a pipe.

[0023] In this technical solution, there is also a transmission part that is only connected to the rotatable support part. That is, the transmission part is only set at the rotatable support part. The transmission part drives the corresponding jet part to rotate on the support part. The jet part is provided with a vertically upward main nozzle and at least one inclined upward auxiliary nozzle.

[0024] In this technical solution, the transmission part includes an arc-shaped rack, and the center of the arc-shaped rack coincides with the center of rotation of the corresponding support part. The arc-shaped rack is fixed on the bearing plate, and the outer side of the arc-shaped rack meshes with the transmission gear on the jet part.

[0025] In this technical solution, the jet section includes a base platform fixed on the support section and having a hollow inner cavity. The base platform is fixed to the top side wall of the support crossbar. An air pump is connected to the base platform through a pipe. A connecting pipe is connected to the top of the base platform, and a rotational sealing structure is formed between the connecting pipe and the base platform. A bearing circular plate is fixed to the top of the connecting pipe, and a main nozzle is fixed to the top side wall of the bearing circular plate.

[0026] It also includes at least one auxiliary nozzle, which is connected to the supporting circular plate or the main nozzle, and the auxiliary nozzle, the main nozzle, the supporting circular plate and the connecting pipe are interconnected, and the base platform and the connecting pipe are interconnected.

[0027] A transmission gear is fitted and fixed on the outer wall of the connecting pipe.

[0028] Specifically, both ends of the arc-shaped rack are fixed with mounting crossbars, the ends of which extend to the top of the bearing plate and are fixed to the bearing plate by mounting vertical bars.

[0029] When the supporting crossbar that forms the support part rotates, the arc-shaped rack on its surface also rotates. The rotating arc-shaped rack drives the transmission gear to rotate, thereby driving the connecting pipe and the bearing circular plate to rotate. The secondary nozzles also rotate during rotation. The secondary nozzles are set at an angle, which can expand the area of ​​the spray when rotating. With only a few secondary nozzles, the cooling area can be increased, avoiding the need to add too many secondary nozzles, which would reduce the wind pressure and affect the cooling efficiency.

[0030] A laser processing method for preventing damage to sheet metal parts, the specific steps of which are as follows:

[0031] S1. Initial support: Several lifting components are set on the support serrated plate so that the lifting components are in the lifting state and their upper surface is higher than the tip of the support serrated plate, which is used to temporarily support the sheet metal parts during the placement stage.

[0032] S2. Place the sheet metal parts: Place the sheet metal parts to be processed stably on top of the lifting assembly, so that the contact surface between the sheet metal parts and the lifting assembly forms support, while maintaining a gap between the bottom surface of the sheet metal parts and the tip of the serrated plate to avoid scratching during placement.

[0033] S3. Positioning and leveling: After the sheet metal part is positioned, control the lifting assembly to retract vertically, so that the sheet metal part gradually moves down and is placed stably on the support sawtooth plate.

[0034] S4. Entering the processing stage: After the lifting assembly has fully retracted, the sheet metal part is supported and fixed by the supporting serrated plate, and then enters the laser cutting or other processing steps.

[0035] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0036] The positive and progressive effects of this invention are as follows:

[0037] By setting up a lifting component on the machine tool worktable, the lifting component can be activated during the loading, unloading, or moving of sheet metal parts, and the sheet metal parts can be appropriately lifted from above the supporting serrated plate to form a gap between it and the tip of the serrated plate.

[0038] This eliminates direct contact between sheet metal parts and the serrated support plate during handling, handling, or position adjustment, effectively preventing surface scratches, indentations, or plating damage caused by the support tip, and significantly improving the finished product quality and appearance integrity of the workpiece surface.

[0039] Before laser cutting or other processing steps begin, the lifting assembly can automatically retract, allowing the sheet metal part to be firmly placed back on the support saw blade plate, ensuring uniform force, accurate positioning, and stable beam focus during the cutting process.

[0040] This structure not only protects the workpiece from scratches and ensures processing stability, but also improves the automation level and ease of operation of the machine tool, reducing the risks and probability of misoperation during manual handling, and has high practicality and promotion value. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0042] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point N;

[0043] Figure 3 For the present invention Figure 1 A structural diagram from another perspective;

[0044] Figure 4 For the present invention Figure 1 A schematic diagram of the structure viewed from below;

[0045] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point I;

[0046] Figure 6 This is a schematic diagram of the lifting component of the present invention;

[0047] Figure 7 For the present invention Figure 6 A front view structural diagram;

[0048] Figure 8 For the present invention Figure 6 A schematic diagram of the structure viewed from below;

[0049] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point J;

[0050] Figure 10 This is a schematic diagram of the lifting assembly structure with cooling components of the present invention;

[0051] Figure 11 For the present invention Figure 10A magnified schematic diagram of the structure at point K;

[0052] Figure 12 For the present invention Figure 10 A schematic diagram of the side view structure;

[0053] Figure 13 For the present invention Figure 12 A magnified schematic diagram of the structure at point M.

[0054] Explanation of reference numerals in the attached figures

[0055] 1. Body; 11. Guide rail; 12. Slag collection box;

[0056] 2. Support platform; 21. Support frame; 22. Supporting serrated plate;

[0057] 3. Gantry frame; 31. Moving table; 32. Cutting head;

[0058] 4. Mounting plate;

[0059] 5. Lifting drive unit;

[0060] 6. Supporting vertical bar; 61. Supporting plate; 611. Through groove;

[0061] 7. Support unit; 71. Support part; 711. Bearing cylinder; 712. Support crossbar; 713. Outer sleeve; 714. Support ball; 72. Drive part; 721. Mounting rod; 722. Connecting plate; 723. Drive rack; 73. Driven part; 731. Driven gear; 7311. First connecting frame; 732. First bevel gear; 733. Second bevel gear; 7331. Second connecting frame; 734. Drive pulley; 735. Transmission belt; 736. Driven pulley; 7361. Third connecting frame; 737. Transmission rod;

[0062] 8. Cooling component; 81. Transmission unit; 811. Arc rack; 812. Mounting crossbar; 813. Mounting vertical bar; 82. Spray section; 821. Supporting circular plate; 822. Main nozzle; 823. Auxiliary nozzle; 824. Connecting pipe; 825. Transmission gear; 826. Base platform. Detailed Implementation

[0063] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0064] like Figure 1As shown, a laser processing device for preventing damage to sheet metal parts includes a body 1. Guide rails 11 are fixed on both sides of the top of the body 1. The guide rails 11 are arranged along the length of the body 1. A gantry 3 is provided on the top of the body 1. The bottom sides of the gantry 3 are slidably connected to the two guide rails 11 respectively. The gantry 3 is distributed along the width of the body 1. A moving stage 31 is slidably connected to the gantry 3. A cutting head 32 is installed on the moving stage 31. A support platform 2 is provided on one side of the body 1. A rectangular support frame 21 is slidably connected to the top of the support platform 2. Multiple protruding support serrated plates 22 are fixed on the upper surface of the support frame 21 at equal intervals. Sheet metal parts are placed on the support serrated plates 22.

[0065] It also includes multiple lifting components, which are located at the bottom of the support frame 21. The top of the lifting components extends from the gap between two support serrated plates 22 to lift the sheet metal parts and prevent the tips of the support serrated plates 22 from scratching the sheet metal parts when they are moved.

[0066] The machine body 1, gantry 3, moving table 31, and cutting head 32 in this application are all conventional components of existing CNC laser cutting machine tools. Typically, the gantry 3 is positioned along the length (X-axis direction) of the machine body 1 and can reciprocate. The moving table 31 is mounted on the crossbeam of the gantry 3 and can move laterally (Y-axis direction), thereby driving the cutting head 32 to achieve linkage movement in both the X and Y axes to complete the precise cutting and positioning of sheet metal parts.

[0067] Since the above-mentioned structures and their coordinated motion methods have been widely used in existing CNC laser cutting equipment, their structural forms and implementation principles are well known to those skilled in the art. Therefore, this application does not describe them repeatedly, but focuses on providing a detailed description of the improved lifting component and its collaborative functions.

[0068] By lifting the sheet metal parts with the lifting assembly, it is possible to avoid scratching the sheet metal parts at the tip of the supporting serrated plate 22 when moving the sheet metal parts. During processing, the lifting assembly retracts, so that the sheet metal parts are placed on the supporting serrated plate 22. Example 1

[0069] like Figures 4-6 As shown, the lifting assembly includes a lifting drive unit 5. The top of the lifting drive unit 5 is fixed to a support unit 7 via a bearing vertical rod 6. The lifting unit drives the support unit 7 to move upward, passing between two support serrated plates 22, until the sheet metal part is lifted. The lifting drive unit 5 is fixed on the mounting plate 4, and the mounting plate 4 is fixed to the bottom of the bearing frame 21.

[0070] The support unit 7 is mounted on the surface of the support plate 61 on the top of the support rod 6, and the support rod 6 is fixed on the moving end of the top of the lifting drive unit 5.

[0071] The support unit 7 includes multiple support parts 71, which are fixedly or rotatably connected to the bearing plate 61. There are at most two support parts 71 fixed to the bearing plate 61, and they are arranged parallel to the support serrated plate 22.

[0072] The support portion 71, which is rotatably connected to the bearing plate 61, is connected to the drive component. The support portion 71, which passes through the two support serrated plates 22, rotates under the drive component, changing from a state parallel to the support serrated plates 22 to a state perpendicular to the support serrated plates 22 or tending to be perpendicular to the support serrated plates 22.

[0073] The support part 71 includes a support cylinder 711, which is fixed to the surface of the support plate 61 or can rotate on the surface of the support cylinder 711. A support crossbar 712 is fixed on the side wall of the support cylinder 711, and the end of the support crossbar 712 is curved upward and fixedly connected to the outer sleeve 713. The outer sleeve 713 is filled with a rotatable support ball 714.

[0074] The support ball 714 on the support part 71 contacts the sheet metal part. More than half of the surface of the support ball 714 is covered by the outer sleeve 713. The rotation of the support ball 714 in the inner cavity of the outer sleeve 713 facilitates the movement of the sheet metal part.

[0075] The driving component includes a driving part 72, which includes a mounting rod 721. The mounting rod 721 is fixed to the fixed end of the lifting driving unit 5 or the mounting plate 4. The top of the mounting rod 721 is provided with a vertically distributed driving rack 723. The driving rack 723 is fixed to the connecting plate 722, and the connecting plate 722 is fixed to the top of the mounting rod 721.

[0076] The driven part 73 is mounted on the supporting vertical rod 6. The driven part 73 moves upward with the supporting vertical rod 6. After passing through the drive rack 723, the upward-moving driven part 73 drives the support part 71, which is connected to it for transmission, to rotate.

[0077] The number of driving parts 72, driven parts 73 and support parts 71 are the same and correspond one-to-one.

[0078] like Figure 9As shown, the driven part 73 includes a driven gear 731 that meshes with the corresponding drive rack 723. A first bevel gear 732 is provided on one side of the driven gear 731 and is fixedly mounted coaxially therewith. A second bevel gear 733 that meshes with the first bevel gear 732 is provided on the top of the first bevel gear 732. A drive pulley 734 that is fixedly mounted coaxially with the top of the second bevel gear 733 is provided on the top of the second bevel gear 733. The drive pulley 734 is connected to the driven pulley 736 via a transmission belt 735. A transmission rod 737 is fixed at the top center of the driven pulley 736. The transmission rod 737 passes through the bearing plate 61 via a through groove 611 and is fixedly connected to the corresponding support part 71. That is, the transmission rod 737 is fixedly connected to the bottom end of the bearing cylinder 711 on the corresponding support part 71.

[0079] Driven gear 731 is mounted on the support vertical rod 6 via first connecting frame 7311, second bevel gear 733 is fixed on the support vertical rod 6 via second connecting frame 7331, and driven pulley 736 is fixed on the support vertical rod 6 via third connecting frame 7361.

[0080] When the driven gear 731 moves upward to the drive rack 723, the support part 71 extends out from the top of the two support serrated plates 22. Through the mutual pushing between the meshing teeth, the driven gear 731 is driven to rotate. The first bevel tooth, which is coaxially fixed with the driven gear 731, also rotates synchronously. The first bevel tooth drives the second bevel gear 733 to rotate, thereby changing the transmission direction. The second bevel gear 733 drives the drive pulley 734 to rotate. The drive pulley 734 drives the driven pulley 736 to rotate through the transmission belt 735. The driven pulley 736 drives the corresponding bearing cylinder 711 to rotate through the transmission rod 737, thereby driving the support part 71 to rotate and unfold.

[0081] By providing an expandable support 71, the support 71 expands when the lifting assembly is activated, thereby significantly increasing the contact area between the lifting assembly and the sheet metal part.

[0082] A larger contact area can disperse the force during the lifting process, avoiding indentations, deformation or slippage on the surface of sheet metal parts due to excessive local stress, thus improving the stability of the workpiece support and the surface protection effect.

[0083] Furthermore, the deployment of the support unit 71 does not require an additional drive mechanism; its deployment power is directly driven by the lifting action of the lifting component itself. The structure is simple, the transmission path is short, and the action synchronization is high.

[0084] This design not only reduces system complexity and manufacturing costs, but also reduces the risk of failure and maintenance difficulty, and improves the overall reliability and service life of the lifting components. Example 2

[0085] like Figures 10-13As shown, the support 71 is also provided with an air-cooled cooling component 8. The cooling component 8 includes a jet section 82, which is installed on the support 71 and is connected to an air pump through a pipe.

[0086] It also includes a transmission part 81 that is only connected to the rotatable support part 71. That is, the transmission part 81 is only provided at the rotatable support part 71. The transmission part 81 drives the corresponding jet part 82 to rotate on the support part 71. The jet part 82 is provided with a vertically upward main nozzle 822 and at least one inclined upward auxiliary nozzle 823.

[0087] The transmission unit 81 includes an arc-shaped rack 811, and the center of the arc-shaped rack 811 coincides with the center of rotation of the corresponding support unit 71. The arc-shaped rack 811 is fixed on the bearing plate 61, and the outer side of the arc-shaped rack 811 is meshed with the transmission gear 825 on the jet section 82.

[0088] The jet section 82 includes a base platform 826 fixed on the support section 71 and having a hollow inner cavity. The base platform 826 is fixed to the top side wall of the support crossbar 712. The base platform 826 is connected to an external air pump through a pipe. The top of the base platform 826 is connected to a connecting pipe 824, and a rotational sealing structure is formed between the connecting pipe 824 and the base platform 826. The top of the connecting pipe 824 is fixed to a bearing circular plate 821, and the top side wall of the bearing circular plate 821 is fixed to a main nozzle 822.

[0089] It also includes at least one auxiliary nozzle 823, which is connected to the supporting circular plate 821 or the main nozzle 822, and the auxiliary nozzle 823, the main nozzle 822, the supporting circular plate 821 and the connecting pipe 824 are interconnected, and the base 826 is interconnected with the connecting pipe 824.

[0090] A transmission gear 825 is sleeved and fixed on the outer wall of the connecting pipe 824.

[0091] Specifically, both ends of the arc-shaped rack 811 are fixed with mounting crossbars 812, the ends of which extend to the top of the bearing plate 61 and are fixed to the bearing plate 61 by mounting vertical bars 813.

[0092] When the support crossbar 712 constituting the support part 71 rotates, the arc-shaped rack 811 on its surface also rotates. The rotating arc-shaped rack 811 drives the transmission gear 825 to rotate, thereby driving the connecting pipe 824 and the bearing circular plate 821 to rotate. The auxiliary nozzle 823 also rotates during the rotation. The auxiliary nozzle 823 is set at an angle, which can expand the area of ​​the spray when rotating. Under the premise of requiring fewer auxiliary nozzles 823, the cooling area can be increased, avoiding the need to add too many auxiliary nozzles 823, which would reduce the wind pressure and affect the cooling efficiency.

[0093] After laser cutting is completed, the sheet metal part is moderately lifted from above the supporting sawtooth plate 22 by the lifting assembly, and the air pump device is started so that the cooling airflow is sprayed out through the main nozzle 822 and the auxiliary nozzle 823 respectively to quickly cool the surface of the sheet metal part in the lifting area.

[0094] Because sheet metal parts are subjected to high temperatures from the laser during the cutting process, their surface temperature is high. By implementing airflow cooling simultaneously during the lifting stage, not only can heat dissipation be accelerated, preventing thermal deformation, oxidation discoloration, or stress concentration caused by local overheating, but also safety hazards caused by high temperatures during manual handling can be avoided.

[0095] In addition, the lifting structure's movement is linked to the airflow jet process, enabling the cooling airflow to precisely target the area where the sheet metal is lifted, resulting in higher cooling efficiency and lower energy consumption.

[0096] This design allows sheet metal parts to be restored to a safe temperature range before cutting or transporting, improving operational safety and production cycle continuity, while also improving the surface quality and dimensional stability of the finished product.

[0097] In this embodiment, the radius of the arc-shaped rack 811 is minimized to accommodate the gap between the two supporting toothed plates. This embodiment is also suitable for applications involving large sheet metal parts and situations where the distance between the two supporting toothed plates is significant.

[0098] The closer the base plate 826 is to the support plate 61, the smaller the radius of the arc-shaped rack 811.

[0099] A laser processing method for preventing damage to sheet metal parts, the specific steps of which are as follows:

[0100] Initial support: Several lifting components are set on the supporting serrated plate 22 so that the lifting components are in a lifted state and their upper surface is higher than the tip of the supporting serrated plate 22, which is used to temporarily support the sheet metal parts during the placement stage.

[0101] Placing sheet metal parts: Place the sheet metal parts to be processed stably on top of the lifting assembly, so that the contact surface between the sheet metal parts and the lifting assembly forms support, while maintaining a gap between the bottom surface of the sheet metal parts and the tip of the serrated plate to avoid scratching during placement.

[0102] Positioning and leveling: After the position of the sheet metal part is adjusted, control the lifting assembly to retract vertically, so that the sheet metal part gradually moves down and is placed stably on the supporting sawtooth plate 22.

[0103] Processing begins: After the lifting assembly has fully retracted, the sheet metal part is supported and fixed by the supporting serrated plate 22, and then proceeds to laser cutting or other processing steps.

[0104] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A laser processing device for preventing damage to sheet metal parts, comprising a body (1), wherein guide rails (11) are fixed on both sides of the top of the body (1), the guide rails (11) are arranged along the length direction of the body (1), a gantry frame (3) is provided on the top of the body (1), the bottom sides of the gantry frame (3) are slidably connected to the two guide rails (11) respectively, and the gantry frame (3) is distributed along the width direction of the body (1), a moving table (31) is slidably connected on the gantry frame (3), and a cutting head (32) is installed on the moving table (31), a bearing platform (2) is provided on one side of the body (1), and a rectangular bearing frame (21) is slidably connected to the top of the bearing platform (2), characterized in that: It also includes multiple lifting assemblies, which are disposed at the bottom of the support frame (21) and whose tops extend from the gap between two supporting serrated plates (22) for lifting sheet metal parts; The lifting assembly includes a lifting drive unit (5), the top of which is fixed with a support unit (7) by a bearing vertical rod (6), and the lifting unit drives the support unit (7) to move upward, passing between two support sawtooth plates (22) until the sheet metal is lifted. The lifting drive unit (5) is fixed on the mounting plate (4), and the mounting plate (4) is fixed on the bottom of the bearing frame (21). The support unit (7) is installed on the surface of the bearing plate (61) on the top of the bearing vertical rod (6), and the bearing vertical rod (6) is fixed on the moving end on the top of the lifting drive unit (5); The support unit (7) includes a plurality of support parts (71), which are rotatably connected to the bearing plate (61); The support part (71) rotatably connected to the bearing plate (61) is connected to the drive member. The support part (71) passing through the two support sawtooth plates (22) rotates under the drive member, changing from a state parallel to the support sawtooth plates (22) to a state perpendicular to the support sawtooth plates (22) or tending to be perpendicular to the support sawtooth plates (22). The support part (71) includes a support cylinder (711) that can rotate on the surface of the support plate (61). A support crossbar (712) is fixed on the side wall of the support cylinder (711), and the end of the support crossbar (712) is curved upward and fixedly connected to the outer sleeve (713). The outer sleeve (713) is filled with a rotating support ball (714). The driving component includes a driving part (72), the driving part (72) includes a mounting rod (721), the mounting rod (721) is fixed to the fixed end of the lifting driving unit (5) or the mounting plate (4), and the top of the mounting rod (721) is provided with a driving rack (723) distributed vertically. The driven part (73) is disposed on the supporting vertical rod (6). The driven part (73) moves upward with the supporting vertical rod (6). The moving driven part (73) drives the support part (71) connected to it to rotate after passing through the driving rack (723).

2. The laser processing device for preventing damage to sheet metal parts as described in claim 1, characterized in that: The driven part (73) includes a transmission gear (825) meshing with a corresponding drive rack (723). A first bevel gear (732) is provided on one side of the transmission gear (825) and is fixedly mounted on the same axis. A second bevel gear (733) meshing with the first bevel gear (732) is provided on the top of the first bevel gear (732). A drive pulley (734) is fixedly mounted on the top of the second bevel gear (733) and is fixedly mounted on the same axis. The drive pulley (734) is connected to the driven pulley (736) via a transmission belt (735). A transmission rod (737) is fixed at the top center of the driven pulley (736). The transmission rod (737) passes through the bearing plate (61) via a through groove (611) and is fixedly connected to the corresponding support part (71).

3. The laser processing device for preventing damage to sheet metal parts as described in claim 2, characterized in that: The transmission gear (825) is mounted on the bearing vertical rod (6) via the first connecting frame (7311), the second bevel gear (733) is fixed on the bearing vertical rod (6) via the second connecting frame (7331), and the driven pulley (736) is fixed on the bearing vertical rod (6) via the third connecting frame (7361).

4. The laser processing device for preventing damage to sheet metal parts as described in claim 1, characterized in that: The support (71) is also provided with an air-cooled cooling component (8), which includes a jet section (82). The jet section (82) is installed on the support (71) and is connected to an air pump through a pipe.

5. The laser processing device for preventing damage to sheet metal parts as described in claim 4, characterized in that: It also includes a transmission part (81) that is only connected to the rotatable support part (71). The transmission part (81) drives the corresponding jet part (82) to rotate on the support part (71). The jet part (82) is provided with a vertically upward main nozzle (822) and at least one inclined upward auxiliary nozzle (823).

6. A laser processing method for preventing damage to sheet metal parts, applied to the laser processing apparatus for preventing damage to sheet metal parts as described in any one of claims 1-5, characterized in that: The specific steps of the method are as follows: S1, Initial support: Several lifting components are set on the supporting sawtooth plate (22) so that the lifting components are in the lifting state and their upper surface is higher than the tip of the supporting sawtooth plate (22) for temporary support of sheet metal parts during the placement stage; S2. Place the sheet metal parts: Place the sheet metal parts to be processed stably on top of the lifting assembly, so that the contact surface between the sheet metal parts and the lifting assembly forms support, while maintaining a gap between the bottom surface of the sheet metal parts and the tip of the serrated plate to avoid scratching during placement. S3. Positioning and leveling: After the sheet metal parts are positioned, control the lifting assembly to retract vertically so that the sheet metal parts gradually move down and are placed stably on the supporting sawtooth plate (22). S4. Entering the processing: After the lifting component has fully retracted, the sheet metal part is supported and fixed by the supporting sawtooth plate (22), and then enters the laser cutting or other processing steps.

Images