A laser cutting system for sheet metal parts of a sweeping machine based on a rapid material return structure

Abstract

The present invention relates to the field of laser cutting technology, and discloses a laser cutting system for sheet metal parts of a sweeping machine based on a rapid material return structure, comprising a material return portion, the material return portion being located above a material guide port, the material return portion comprising a protective frame fixedly connected to the top of a roller conveyor belt, a movable part being provided at the top of an inner wall of the protective frame, the movable part comprising an electric guide rail, a material return roller being provided on the inner wall of the electric guide rail, the material return roller being rotated while reciprocating on the inner wall of the electric guide rail, the material return roller comprising a rotating roller, the inner wall of the rotating roller being provided with an extension structure. The invention is provided with a material return roller, the rotation and reciprocating sliding of the material return roller being combined to enable the pressure piece to apply pressure to the effective part from different angles and positions, and this composite motion can act more comprehensively on the connection portion between the part and the mother part, effectively overcoming the connection force, and can significantly improve the separation success rate, especially for parts with complex shapes and irregularly distributed connection points.

Description

Technical Field

[0001] The present invention relates to the field of laser cutting technology, and in particular to a laser cutting system for sheet metal parts of a sweeping machine based on a rapid material return structure. Background Art

[0002] As the market for sweeping robots continues to expand, demand for sheet metal parts for these machines is also increasing. Laser cutting equipment, with its high precision, high efficiency, and high-quality cutting results, can meet the sheet metal processing needs of sweeping robot manufacturers, thus presenting a promising market. A high-energy-density laser beam is irradiated onto sheet metal, instantly melting or vaporizing the material, achieving precise cutting. The cut sheet metal part is then separated from the original sheet and removed.

[0003] In the existing technology, sheet metal parts are separated from the parent material by laser cutting, but due to process requirements, micro-connection points may be retained to prevent the parts from shifting during the cutting process. Therefore, the sheet metal parts are in a "semi-separated" state from the parent material after cutting, and external force intervention is required to completely remove them. In addition, sheet metal parts have complex shapes, and parts often have more corners, holes and irregular contours. In actual production, the magnetic separation method relies on the magnetic conductivity of the material, which is completely ineffective for non-magnetic materials, and parts with complex shapes or uneven surfaces are prone to unstable adsorption. The robotic arm grasping separation requires adaptive suction cups or clamps, small-sized parts are prone to adsorption failure, and special-shaped parts require customized clamps, which are costly and time-consuming to adjust. The air blowing separation method relies on gas impact, and insufficient thrust for thick and heavy parts leads to residue, and thin parts are easily blown away and offset, and are prone to interfering with adjacent parts during dense layout. The gravity separation method relies on its own weight, and lightweight or micro parts are prone to jamming, and complex structural parts are prone to hooking the parent material, all of which require additional vibration assistance. Summary of the Invention

[0004] Technical problems solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a laser cutting system for sheet metal parts of a sweeper based on a rapid material return structure, which can effectively solve the problem of inconvenient material return of sheet metal parts in the prior art.

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

[0007] The present invention provides a laser cutting system for sheet metal parts of a sweeping machine based on a rapid material return structure, comprising:

[0008] A roller conveyor belt, wherein a guide port for guiding the unloading of sheet metal parts is provided in the middle of the roller conveyor belt;

[0009] A laser cutting unit, located at the top of the roller conveyor, for cutting sheet metal mother parts;

[0010] The material stripping part is located above the material guide port, and the material stripping part includes a protective frame fixedly connected to the top end of the roller conveyor belt, and a movable part is provided at the top end of the inner wall of the protective frame, and the movable part includes an electric guide rail, and the inner wall of the electric guide rail is provided with a material stripping pressure roller, and the material stripping pressure roller rotates while reciprocating the inner wall of the electric guide rail, and the material stripping pressure roller includes a rotating roller, and the inner wall of the rotating roller is provided with an extension structure, and the outer wall of the extension structure is provided with a pressure piece, and the rotating roller and the extension structure rotate synchronously, and the extension structure extends while rotating, and the extension structure drives the pressure piece to move and penetrate the rotating roller, thereby pressurizing the cut sheet metal mother part to separate it;

[0011] Wherein, the stretching structure includes a gravity ball in contact with one end of the pressing member for enhancing its stretching power;

[0012] The movable part further comprises a push rod located at the top end of the electric guide rail, and the inner wall of the electric guide rail is provided with a tooth plate meshingly connected with both ends of the material stripping roller;

[0013] The material stripping roller further comprises a guide block meshed with the tooth plate, the other end of the guide block is fixedly connected to the rotating roller, and the outer wall of the rotating roller is provided with a circular groove for facilitating the movement of the pressing piece;

[0014] The stretching structure includes a fixed block arranged in the middle of the roller, a telescopic rod symmetrically arranged on the outer wall of the fixed block, and an arc block flexibly connected to the pressure piece at the other end of the telescopic rod; an arc groove symmetrically opened on the inner wall of the arc block, a gravity ball slidably connected to the inner wall of the arc groove, and protrusions evenly arranged on the outer wall of the gravity ball;

[0015] Among them, the pressing piece includes a rubber block 1 embedded in the inner wall of the arc groove, a fixing rod is provided at the other end of the rubber block 1, a rubber block 2 is provided at the other end of the fixing rod, and a pressing block with an arc-shaped outer wall is provided at the other end of the rubber block 2.

[0016] Furthermore, one end of the rubber block away from the fixing rod is designed to be arc-shaped, and the curvature of the inner wall of the arc-shaped groove is the same as that of the fixing rod.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention incorporates a stripping roller whose combined rotation and reciprocating sliding motion allows the pressure element to apply pressure to the active component from various angles and positions. Compared to simple rotation or sliding, this combined motion more comprehensively impacts the connection between the component and the parent component, effectively overcoming the connection force. This significantly improves the separation success rate, especially for parts with complex shapes and irregularly distributed connection points.

[0019] The present invention is provided with a pressing piece and a roller. The rotation and extension of the pressing piece is combined with the reciprocating movement of the roller to realize all-round pressurized separation of the sheet metal mother part. The pressing piece extends during the rotation process and can apply pressure to the sheet metal mother part from different angles, while the reciprocating movement of the roller further expands the range of pressure action, so that all parts of the sheet metal mother part can be fully and evenly pressurized, thereby more effectively overcoming the connection force between the sheet metal part and the parts, and improving the separation efficiency and quality.

[0020] The equidistant arrangement of the pressure pieces of the present invention can make the equipment more balanced in force during operation, avoid excessive wear or deformation of equipment components due to excessive local force, and the pressure on each pressure piece is relatively uniform, which reduces the load on a single pressure piece, extends the service life of the pressure piece and related transmission parts, support structures, etc., reduces the maintenance cost and failure rate of the equipment, and improves the overall stability and reliability of the equipment.

[0021] The present invention incorporates an expansion mechanism. As the expansion mechanism rotates, the curved block itself expands due to centrifugal force, driving the pressure element to squeeze the sheet metal component. The gravity ball rolls within the curved groove. The combined effects of its own gravity and the centrifugal force generated by its rotation exert additional outward force on the curved block, allowing the pressure element to exert more force on the active component, improving separation efficiency. This increased pressure is particularly effective for active components that are tightly connected to the parent component, effectively overcoming the connecting force and achieving separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0024] Figure 2 This is a structural schematic diagram of a material stripping portion according to an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the structure of movable parts in an embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a material stripping roller according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the morphological change of the stretched structure according to an embodiment of the present invention;

[0028] Figure 6For the embodiment of the present invention Figure 5 A schematic diagram of the structure enlarged;

[0029] Figure 7 Schematic diagram of the pressing piece structure according to an embodiment of the present invention.

[0030] The numbers in the figure represent: 1. Roller conveyor; 2. Laser cutting part; 3. Material unloading part; 31. Protective frame; 32. Movable part; 321. Electric guide rail; 322. Push rod; 33. Material unloading roller; 331. Guide block; 332. Roller; 333. Pressing piece; 3331. Rubber block 1; 3332. Fixed rod; 3333. Rubber block 2; 3335. Pressing block; 335. Extension structure; 3351. Fixed block; 3352. Telescopic rod; 3353. Arc block; 3355. Arc groove; 3356. Gravity ball; 3357. Bump; 5. Material guide port. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Example:

[0034] See also Figure 1-Figure 7 The present invention provides a technical solution for a laser cutting system for sheet metal parts of a sweeper based on a rapid material return structure:

[0035] like Figure 1 and Figure 2 As shown, the cutting system includes a roller conveyor 1, a laser cutting part 2 and a material stripping part 3. A material guide port 5 for guiding the unloading of sheet metal parts is provided in the middle of the roller conveyor 1; the laser cutting part 2 is located at the top of the roller conveyor 1 and is used to cut the sheet metal mother part; the material stripping part 3 is located above the material guide port 5, and the material stripping part 3 includes a protective frame 31 fixedly connected to the top of the roller conveyor 1. The length of the protective frame 31 is greater than the length of the material guide port 5. One end of the sheet metal mother part moves from the side of the protective frame 31 close to the roller conveyor 1 to the other side of the protective frame 31.

[0036] refer to Figure 2 、 Figure 3 and Figure 4The top of the inner wall of the protective frame 31 is provided with a movable part 32, and the movable part 32 includes an electric guide rail 321. The inner wall of the electric guide rail 321 is provided with a material stripping roller 33. The inner wall of the electric guide rail 321 is provided with a tooth plate that is meshed with both ends of the material stripping roller 33. The material stripping roller 33 rotates due to the meshing while moving back and forth on the inner wall of the electric guide rail 321. A push rod 322 is fixedly connected to the top of the electric guide rail 321. The push rod 322 drives the electric guide rail 321 to move up and down. After the sheet metal mother part moves to a specific position, the push rod 322 drives the electric guide rail 321 to move downward, so that the bottom end of the electric guide rail 321 is tightly fitted with the top of the sheet metal mother part.

[0037] The electric guide rail 321, which is larger than the mother part, moves downward to limit the side of the mother part, which can ensure that the mother part maintains a stable position during the material withdrawal and separation process, prevents it from shifting under pressure, and ensures the accuracy of the separation operation. It can adapt to mother parts of different sizes. As long as the size of the mother part is smaller than the electric guide rail 321, it can play an effective limiting role, thereby improving the compatibility of the equipment with sheet metal parts of different specifications.

[0038] Precise limiting helps ensure the separation quality of effective parts and reduces the possibility of incomplete separation or part damage caused by movement of the parent part. It also enhances the adaptability of the equipment in processing a variety of sheet metal parts and expands the application range of the equipment.

[0039] The rotation of the material stripping roller 33 enables the pressure piece 333 to dynamically apply pressure to the mother part. During the reciprocating sliding process of the material stripping roller 33, the rotating material stripping roller 33 can continuously apply pressure to the part, and the magnitude and direction of the pressure will continue to change with the movement of the material stripping roller 33. This dynamic pressure application method helps to gradually destroy the connection between the part and the mother part, making the separation process smoother.

[0040] The combined rotation and reciprocating sliding of the stripping roller 33 allows the pressure element 333 to apply pressure to the active part from different angles and positions. Compared to simple rotation or sliding, this combined motion can more comprehensively affect the connection between the part and the parent part, effectively overcoming the connection force. This can significantly improve the separation success rate, especially for parts with complex shapes and irregular connection points.

[0041] The reciprocating sliding of the material-returning pressure roller 33 increases the range of action of the pressure piece 333 on the surface of the mother part. Combined with the vibration and scraping effect generated by the rotation, the gap between the effective parts and the mother part can be cleaned more comprehensively. Some corners and gaps that were originally difficult to reach can also be effectively cleaned, reducing waste residue; the combined movement of rotation and sliding enables the pressure piece 333 to produce a more complex force on the waste in the gap, which can not only loosen the waste, but also bring it out of the gap, thereby improving the thoroughness of cleaning.

[0042] By adjusting the reciprocating sliding stroke and rotational speed of the stripping roller 33, it can accommodate active parts of different sizes and shapes. For larger parts, the sliding stroke can be increased; for smaller parts, the motion parameters can be precisely controlled, making the equipment more versatile and flexible.

[0043] refer to Figure 3 、 Figure 4 and Figure 5 The material stripping roller 33 also includes a guide block 331 meshed with the tooth plate, the other end of the guide block 331 is fixedly connected to the roller 332, the outer wall of the roller 332 is provided with a circular groove for facilitating the movement of the pressing piece 333, the material stripping roller 33 includes a roller 332, the inner wall of the roller 332 is provided with a stretching structure 335, the outer wall of the stretching structure 335 is provided with a pressing piece 333, the roller 332 and the stretching structure 335 rotate synchronously, the stretching structure 335 stretches while rotating, and the stretching structure 335 stretches to drive the pressing piece 333 to move and pass through the roller 332, thereby pressurizing the cut sheet metal mother part to separate it, the stretching structure 335 includes a fixed block 3351 arranged in the middle of the roller 332, the outer wall of the fixed block 3351 is symmetrically provided with telescopic rods 3352, the other end of the telescopic rod 3352 is provided with an arc block 3353 flexibly connected to the pressing piece 333, the outer wall of the arc block 3353 is evenly provided with multiple rubber blocks 3331, the other end of the rubber block 3331 is provided with a fixed rod 3332, and the other end of the fixed rod 3332 is provided with a rubber block 2 3333.

[0044] In the initial state, the pressing block 3335 is embedded in the inner wall of the roller 332, and the middle part of the fixed block 3351 is fixedly connected to the middle part of the guide block 331. When the guide block 331 rotates, it drives the fixed block 3351 and the roller 332 to rotate synchronously. The fixed block 3351 rotates to mobilize the telescopic rod 3352 to rotate. The telescopic rod 3352 extends under the action of the centrifugal force of the rotation and the gravity of the arc block 3353. The arc block 3353 slides on the inner wall of the circular groove of the roller 332 under the drive of the telescopic rod 3352. The arc block 3353 drives the pressing piece 333 to move as a whole, moving the pressing piece 333 from a position completely embedded in the roller 332 to a position passing through the circular groove of the roller 332. As the roller 332 rotates, the pressing piece 333 passing through the circular groove squeezes the surface of the sheet metal mother part.

[0045] The retractable design allows the pressing piece 333 to stretch and apply pressure at the appropriate position, namely the lower end, to avoid unnecessary interference caused by contact with the mother part at other positions. The extended part of the pressing piece 333 can evenly apply pressure to the surface of the sheet metal mother part during the rotation process, avoiding the situation where local pressure is too large or too small, which helps to improve the separation quality, make the edges of the separated parts more neat, and reduce deformation or damage caused by uneven pressure. The pressing piece 333 that stretches while rotating can better fit the complex shape of the sheet metal mother part, especially for sheet metal parts with curves or irregular surfaces. It can be adaptively adjusted according to its contour to ensure that pressure can be effectively applied throughout the separation process, thereby improving the adaptability of the equipment to sheet metal parts of different shapes.

[0046] The reciprocating movement of the roller 332 can enable the pressure piece 333 to fully cover the sheet metal mother part, ensuring that all parts of the entire sheet metal part can be affected by the pressure piece 333, avoiding the occurrence of areas that are not pressurized and separated, thereby improving the integrity and reliability of the separation; by controlling the reciprocating movement speed, stroke and frequency of the roller 332, the pressure method and strength of the pressure piece 333 on the sheet metal mother part can be accurately adjusted according to factors such as different sheet metal materials, thicknesses and part shapes, thereby realizing a personalized separation process and improving the process flexibility and controllability of the equipment.

[0047] The rotation and extension of the pressure piece 333 is combined with the reciprocating movement of the roller 332 to achieve all-round pressurized separation of the sheet metal mother part. The pressure piece 333 extends during the rotation process and can apply pressure to the sheet metal mother part from different angles, while the reciprocating movement of the roller 332 further expands the range of pressure application, so that all parts of the sheet metal mother part can be fully and evenly pressurized, thereby more effectively overcoming the connection force between the sheet metal part and the parts, and improving the separation efficiency and quality.

[0048] The rotating and extending pressure piece 333 and the reciprocating roller 332 work together to create a synergistic effect. As the pressure piece 333 rotates and extends, the reciprocating motion of the roller 332 allows the pressure piece 333 to act on a different location on the sheet metal mother part with each rotation, avoiding the potential for excessive local deformation or damage caused by repeated pressure on the same location. This coordinated motion also ensures a more even distribution of pressure from the pressure piece 333 on the sheet metal mother part, further enhancing the separation effect.

[0049] Compared with the structure of using only the pressing piece 333 to rotate or the roller 332 to move back and forth, the combined structure can complete the all-round pressurized separation of the sheet metal mother part in a shorter time, improve production efficiency, reduce the processing time of a single part, and thus increase the production capacity of the entire production line.

[0050] Through all-round uniform pressurization and separation, the deformation and damage of parts during the separation process can be effectively reduced, the dimensional accuracy and surface quality of the parts can be improved, thereby improving the overall quality and pass rate of the product, reducing the scrap rate, and reducing production costs; this structure realizes an automated pressurized separation process, reduces the workload and labor intensity of manual operation, reduces the difficulty and fatigue of the operator's work, and also improves the safety of the production process and reduces safety accidents caused by manual operation errors; because it can adapt to sheet metal mother parts of different shapes, sizes and materials, and can achieve personalized separation processes by adjusting parameters, this structure has high production flexibility, can quickly respond to changes in market demand for different products, and shorten product research and development and production cycles.

[0051] Furthermore, the multiple pressing members 333 apply pressure equidistantly and synchronously, which enables effective parts of different sizes and shapes to be subjected to a relatively uniform force, thereby improving the success rate of separation.

[0052] Multiple equidistantly arranged pressure pieces 333 can form a uniform pressure field on the sheet metal mother part. The distance between each pressure piece 333 is equal, so that the sheet metal mother part is subjected to uniform pressure during the separation process, avoiding the situation where local pressure is too high or too low, helping to improve the separation quality and reduce problems such as part deformation, damage or incomplete separation caused by uneven pressure.

[0053] Regardless of whether the sheet metal parent part is of regular shape or complex irregular shape, the equally spaced pressing pieces 333 can apply pressure more evenly according to its contour. For large sheet metal parts, multiple pressing pieces 333 can share the pressure to ensure that the entire workpiece can be effectively processed; for small or specially shaped sheet metal parts, the equally spaced pressing pieces 333 can also accurately act on the parts that need to be separated, thereby improving the versatility and adaptability of the equipment.

[0054] The equidistant distribution of multiple pressure pieces 333 is equivalent to increasing the number of action points on the sheet metal mother part. During the reciprocating movement of the roller 332 and the rotation and extension of the pressure piece 333, more action points can apply pressure to the sheet metal mother part at the same time, which speeds up the separation speed and reduces the area and time that a single pressure piece 333 needs to cover, thereby improving the overall separation efficiency, helping to improve production efficiency, and meeting the needs of large-scale production.

[0055] The equidistantly arranged pressure pieces 333 cooperate with each other during operation, and the distance between adjacent pressure pieces 333 remains consistent, so that they can form continuous pressure transmission when pressurizing and separating the sheet metal mother part. This collaborative working mode can more effectively overcome the connection force between the sheet metal part and the parts, making the separation process smoother and further improving the separation efficiency.

[0056] The equidistant arrangement of multiple pressure pieces 333 can make the equipment more evenly stressed during operation, avoiding excessive wear or deformation of equipment components due to excessive local stress. The pressure on each pressure piece 333 is relatively uniform, which reduces the load on a single pressure piece 333, extends the service life of the pressure piece 333 and related transmission components, support structures, etc., reduces the maintenance cost and failure rate of the equipment, and improves the overall stability and reliability of the equipment.

[0057] The equally spaced pressure pieces 333 make the transmission of force in the equipment structure more orderly and stable. When the pressure pieces 333 apply pressure to the sheet metal mother part, the force can be evenly transmitted to various parts of the equipment along the equally spaced pressure pieces 333, reducing the concentration and sudden change of force, optimizing the force transmission path, enhancing the stability of the equipment structure, and helping the equipment to maintain a good working condition during long-term operation.

[0058] The 333 press not only reduces adhesion, improves equipment coordination, and optimizes material removal speed while preventing part damage, but also clears the gap between the active part and the parent part during rotation, reducing waste and improving production efficiency. This gap-clearing function eliminates the need for subsequent cleaning operations, reducing labor and time costs.

[0059] The rubber block 2 3333 has a certain deformation ability, and the outer wall of the pressure block 3335 is set to be arc-shaped. When the force exerted by the pressure block 3335 is on the remaining material of the mother part, it can avoid causing pits or damage to the surface of the mother part, thereby protecting the integrity of the mother part. It plays a buffering role when pressure is applied, reducing damage to effective parts caused by excessive pressure, improving the yield rate of parts, protecting the mother part from damage, and facilitating the subsequent reuse of the mother part, thereby improving material utilization, reducing part damage, and improving the quality and stability of effective parts.

[0060] The limiting function of the guide block 331 provides a stable basis for the operation of the roller 332 and the pressure piece 333. The rotational pressure of the roller 332 and the pressure piece 333 can accurately operate the mother part within the range limited by the guide rail. The three work together to improve the efficiency and accuracy of the material return separation.

[0061] refer to Figure 6 and Figure 7 The inner wall of the arc block 3353 is symmetrically provided with arc grooves 3355, the inner wall of the arc groove 3355 is slidably connected with a gravity ball 3356, the outer wall of the gravity ball 3356 is evenly provided with protrusions 3357, and the other end of the rubber block 2 3333 is provided with a pressure block 3335 with an arc-shaped outer wall. The end of the rubber block 1 3331 away from the fixing rod 3332 adopts an arc design, and the arc surface has the same curvature as the inner wall of the arc groove 3355.

[0062] As the extension structure 335 rotates, the arc block 3353 itself stretches due to centrifugal force, driving the pressure piece 333 to squeeze the sheet metal part. The gravity ball 3356 rolls within the arc groove 3355. The combined effects of its own gravity and the centrifugal force generated by its rotation exert additional outward force on the arc block 3353, allowing the pressure piece 333 to exert more force on the active component, improving separation efficiency. This increased pressure is particularly effective for active components that are tightly connected to the parent component, effectively overcoming the connecting force and achieving separation.

[0063] The rolling position of the gravity ball 3356 within the arcuate groove 3355 changes with the rotational speed and direction. When the rotational speed increases, centrifugal force pushes the gravity ball 3356 closer to the outer wall of the arcuate groove 3355, further increasing the extension of the arc block 3353 and the pressure on the pressure piece 333. When the rotational speed slows, centrifugal force pushes the gravity ball 3356 closer to the center of the arcuate groove 3355, reducing the pressure on the pressure piece 333. This dynamic adjustment capability allows the pressure piece 333 to adaptively adjust the pressure according to different working conditions, preventing excessive pressure from damaging parts or insufficient pressure from preventing separation.

[0064] During rotation, the rolling of gravity ball 3356 within arc-shaped groove 3355 provides a certain balance. This can offset some of the unbalanced forces generated by rotation, reducing vibration and shaking of the device, and ensuring smoother operation. This helps extend the service life of the device and reduces component wear and failure caused by vibration.

[0065] The presence of gravity ball 3356 provides a certain degree of cushioning and adaptability to the movement of arc block 3353 and pressure piece 333. When encountering slight resistance or surface irregularities, gravity ball 3356 adjusts pressure distribution by rolling, preventing damage to pressure piece 333 or other components due to localized excessive force, thereby improving the device's fault tolerance and reliability.

[0066] When the gravity ball 3356 rolls in the arc groove 3355, it causes slight vibrations in the arc block 3353 and the pressing piece 333. This vibration can be transmitted to the gap between the effective part and the mother part, helping to loosen and discharge waste and impurities in the gap, further enhancing the cleaning function of the pressing piece 333 during the separation process.

[0067] The shape of the arcuate groove 3355 is designed to limit the rolling range of the gravity ball 3356. When the gravity ball 3356 rolls to a certain position, the side of the arcuate groove 3355 prevents it from rolling excessively or falling out of the arcuate groove 3355, ensuring the normal operation of the device, improving the safety and stability of the device, and preventing device failure or component damage caused by abnormal rolling of the gravity ball 3356.

[0068] The bumps 3357 increase the friction between the gravity ball 3356, the inner wall of the arc groove 3355, and the arc block 3353, allowing the gravity ball 3356 to more effectively transfer the centrifugal force generated by rotation and its own gravity to the arc block 3353. This helps the pressing piece 333 exert greater pressure on the active parts, improving the success rate of part separation, which is particularly suitable for tightly connected parts.

[0069] As gravity ball 3356 rolls, bumps 3357 cause noticeable vibrations. This vibration is transmitted to the gap between the active part and the base, effectively loosening and removing waste and impurities. Furthermore, bumps 3357 scrape away stubborn impurities in the gap, making cleaning more thorough and reducing subsequent cleaning steps.

[0070] The combined structure combines the advantages of each part. It can not only adapt to mother parts of different sizes, but also separate and clean effective parts of various shapes and sizes. It has strong versatility and adaptability. The rubber block pressing piece 333 cooperates with other parts to further enhance the protection of the mother part and effective parts while achieving efficient separation, thereby reducing losses during the production process.

[0071] Efficient collaborative work and comprehensive adaptability make the entire material return and separation process smoother, greatly shortening the production cycle, improving production efficiency, reducing part damage and material waste, while reducing the cost of manual cleaning, and comprehensively reducing production costs. Stable operation and good protection performance ensure the quality of effective parts, improve the overall quality of the product, and enhance market competitiveness.

[0072] The existing structure that directly moves up and down and applies pressure as a whole can usually only provide uniform pressure. For parts with irregular shapes or large size differences, uneven pressure may occur, making some parts difficult to separate or even damaged during the separation process. In addition, this structure generally uses a rigid pressing head. When applying pressure, if the pressure point is not properly controlled, it is easy to leave indentations on the surface of the mother part or damage the mother part. This damage is especially obvious for some soft sheet metal materials.

[0073] The multiple pressing pieces 333 on the surface of the transfer roller 332 of the present invention can apply pressure at equal intervals and synchronously, and can flexibly apply force to various parts according to the different sizes and shapes of the effective parts, so that both small complex parts and large simple parts can be effectively separated; when the force applied by the pressing piece 333 is on the remaining material of the mother part, the deformation of the pressing piece 333 can avoid causing pits in the remaining material or the surface of the mother part, thereby protecting the integrity of the mother part and being beneficial to the subsequent processing or reuse of the mother part; during the rotation process, the pressing piece 333 can not only separate the effective parts, but also use the relative movement between the pressing piece 333 and the mother part to clean the gap between the effective parts and the mother part, thereby reducing the subsequent special cleaning process and improving production efficiency.

[0074] The above structure drives the pressure piece 333 to move through the rotation of the roller 332. The pressure piece 333 stretches to its longest length and applies pressure when it rotates to the lower end. This dynamic pressure application method can make the effective parts receive more uniform and continuous force during the separation process, which helps to overcome the connection force between the parts and the parent part, achieve smoother separation, and avoid the direct up and down movement. The structure of overall pressure application is a one-time overall downward pressure, and the pressure is concentrated and applied at an instant, which is prone to insufficient pressure or excessive pressure.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 laser cutting system for sheet metal parts of a sweeping machine based on a rapid material return structure, characterized in that: include: A roller conveyor belt (1), wherein a guide port (5) for guiding the unloading of sheet metal parts is provided in the middle of the roller conveyor belt (1); A laser cutting section (2), the laser cutting section (2) being located at the top of the roller conveyor (1) and being used for cutting a sheet metal mother part; The material return portion (3) is located above the material guide port (5), and the material return portion (3) includes a protective frame (31) fixedly connected to the top of the roller conveyor belt (1). A movable member (32) is provided at the top of the inner wall of the protective frame (31). The movable member (32) includes an electric guide rail (321). The inner wall of the electric guide rail (321) is provided with a material return roller (33). The material return roller (33) rotates while reciprocating on the inner wall of the electric guide rail (321). The material stripping roller (33) comprises a rotating roller (332), an inner wall of the rotating roller (332) is provided with a stretching structure (335), and an outer wall of the stretching structure (335) is provided with a pressing piece (333), the rotating roller (332) and the stretching structure (335) rotate synchronously, the stretching structure (335) stretches while rotating, and the stretching structure (335) drives the pressing piece (333) to move and penetrate the rotating roller (332), thereby pressurizing the cut sheet metal mother part to separate it; Wherein, the stretching structure (335) includes a gravity ball (3356) in contact with one end of the pressing member (333) for enhancing its stretching power; The movable member (32) further comprises a push rod (322) located at the top end of the electric guide rail (321), and the inner wall of the electric guide rail (321) is provided with a tooth plate meshingly connected with both ends of the material-returning pressure roller (33); The material-removing pressing roller (33) further comprises a guide block (331) meshed with the tooth plate, the other end of the guide block (331) is fixedly connected to the rotating roller (332), and the outer wall of the rotating roller (332) is provided with a circular groove for facilitating the movement of the pressing piece (333); The stretching structure (335) comprises a fixed block (3351) arranged in the middle of the roller (332); a telescopic rod (3352) is symmetrically arranged on the outer wall of the fixed block (3351); an arc block (3353) flexibly connected to the pressing piece (333) is arranged at the other end of the telescopic rod (3352); an arc groove (3355) is symmetrically opened on the inner wall of the arc block (3353); a gravity ball (3356) is slidably connected to the inner wall of the arc groove (3355); and a protrusion (3357) is evenly arranged on the outer wall of the gravity ball (3356); The pressing piece (333) comprises a rubber block (3331) embedded in the inner wall of the arc groove (3355), a fixing rod (3332) is provided at the other end of the rubber block (3331), a rubber block (3333) is provided at the other end of the fixing rod (3332), and a pressing block (3335) with an arc-shaped outer wall is provided at the other end of the rubber block (3333).

2. The sheet metal laser cutting system for a sweeper based on a rapid material return structure according to claim 1, characterized in that: The end of the rubber block 1 (3331) away from the fixing rod (3332) is designed to be arc-shaped, and the curvature of the inner wall of the arc-shaped groove (3355) is the same as the curvature of the fixing rod (3332).

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