Intelligent laser cutting equipment for processing metal parts of children's dining chairs

Abstract

The application discloses a kind of intelligent laser cutting equipment for processing children's dining chair metal piece, it is related to laser cutting equipment technical field, including rack, positioning frame is arranged in rack, and laser cutting machine is arranged in one side of positioning frame;Positioning mechanism is arranged on positioning frame, and it is used to clamp and drive pipe around its axis rotation, and slag suction assembly is arranged on positioning mechanism.The application is set up by setting up slag suction assembly and sealed slag collection component, and suction structure is extended into small-bore pipe inside and directly opposite cutting point position to receive molten slag, relatively closed airflow channel is constructed in pipe and directional flow airflow is formed, can realize directional collection and real-time suction discharge of molten slag from cutting source, reach very high pipe inner wall slag removal cleanliness, guarantee the integrity of anticorrosive coating of pipe inner wall, improve the processing quality and use safety performance of children's dining chair metal pipe.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, and in particular to an intelligent laser cutting device for processing metal parts for children's dining chairs. Background Technology

[0002] The metal support components of children's high chairs are mostly made of thin-walled metal tubing with a diameter of 20 to 50 millimeters. Side wall openings and end cutting are the core processes in processing these tubing components. Laser cutting, due to its high cutting precision, minimal workpiece thermal deformation, and high processing efficiency, has become the mainstream processing method for this type of work. To adapt to the multi-variety, small-batch production model of the children's high chair industry, laser cutting equipment with intelligent parameter adjustment functions has gradually become the mainstream equipment for processing metal parts for children's high chairs. Existing equipment typically has a full-area suction device under the worktable, along with an intelligent airflow adjustment module to collect and treat cutting slag. However, existing intelligent laser cutting equipment for processing metal parts for children's high chairs still has the following shortcomings during use:

[0003] Existing equipment typically uses a full-area suction system located on top of the workbench for slag removal. Due to limitations in its size and placement, this system cannot reach into small-diameter pipes for targeted slag removal. Consequently, molten metal slag from cutting adheres extensively to the inner wall of the pipe. This issue leads to multiple adverse effects. When manually cleaning the slag, hard cleaning tools can easily scratch the anti-corrosion coating on the inner surface of the pipe, damaging its rust and corrosion resistance and reducing its lifespan and appearance. Furthermore, incompletely cleaned fine slag remains in the pipe cavity for extended periods. During long-term use, vibration or external forces may cause it to detach and spill out, posing a safety hazard to children and failing to meet safety and quality standards for infant and toddler products. Summary of the Invention

[0004] The purpose of this application is to provide an intelligent laser cutting device for processing metal parts of children's dining chairs, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: an intelligent laser cutting device for processing metal parts of children's dining chairs, comprising a frame, a positioning frame disposed within the frame, and a laser cutting machine disposed on one side of the positioning frame; a positioning mechanism disposed on the positioning frame for clamping and driving the pipe to rotate around its axis, and a slag-guiding and suction assembly disposed on the positioning mechanism; the slag-guiding and suction assembly comprises:

[0006] A suction tube is coaxially inserted into a fitting. One end of the suction tube is close to the laser-cut position on the fitting, and the other end of the suction tube is connected to an external vacuum pump via a quick-connect coupling.

[0007] A slag guide cover is coaxially mounted at the end of the suction pipe;

[0008] The conical guide head is coaxially fixed inside the slag guide cover by the first mounting bracket, and the outside air communicates with the inside of the suction pipe through the gap between the slag guide cover and the conical guide head.

[0009] The second mounting bracket is slidably connected to the positioning mechanism along the length of the pipe, and the suction tube is fixed to the second mounting bracket; the second mounting bracket is threaded with a positioning bolt; when the end of the positioning bolt abuts against the positioning mechanism, the position of the second mounting bracket can be locked by the positioning bolt;

[0010] A sealing slag collection component is provided at the end of the pipe fitting away from the slag suction component; the sealing slag collection component is used to cooperate with the slag suction component to form a relatively closed airflow channel inside the pipe fitting.

[0011] Preferably, the slag suction assembly further includes multiple elastic support rods and contacts; the multiple elastic support rods are arranged at equal intervals around the axis of the suction pipe, and the multiple elastic support rods are hinged to the suction pipe through mounting blocks; the contacts are fixed to the ends of the elastic support rods, and the contacts abut against the inner wall of the pipe; the elastic support rods have an elastic arc-shaped structure and provide continuous contact force between the contacts and the pipe.

[0012] Preferably, the contact has an installation groove, and a ball bearing is provided in the installation groove; the contact abuts against the inner wall of the pipe through the ball bearing.

[0013] Preferably, the sealed slag collection assembly includes a sealing end cap, a connecting pipe, an air supply valve, and a flow guide grid plate; the sealing end cap is coaxially mounted on the non-cut end of the pipe fitting; the connecting pipe is coaxially connected to the sealing end cap; the air supply valve is installed on the connecting pipe; the flow guide grid plate is inclinedly disposed in the cavity inside the sealing end cap; and filter grooves are formed on the flow guide grid plate.

[0014] Preferably, the sealing slag collection assembly includes an annular component and an annular airbag; the annular airbag is disposed between the pipe and the annular component, and the sealing end cap and the annular component are rotatably connected by a bearing.

[0015] Preferably, the sealing slag collection assembly includes a collection box and a slag collection drawer; the collection box is located at the bottom of the sealing end cap, and the interior of the collection box communicates with the inner cavity of the sealing end cap; the slag collection drawer is located in the collection box; the upper end of the flow guide grid plate faces the pipe opening, and the lower end of the flow guide grid plate extends to the top opening of the collection box.

[0016] Preferably, the suction pipe is provided with a flexible isolation component; the flexible isolation component is used to isolate the pipe cutting position so that the molten slag is driven by the directional airflow in front, flows towards the suction port at the cutting end and is sucked away by the suction pipe.

[0017] Preferably, the flexible isolation component includes an annular mounting base, an annular flexible scraper, a top support plate, and a slag collection groove; the annular mounting base is coaxially disposed on the suction pipe; the annular flexible scraper is disposed on the annular mounting base, and the outer diameter of the annular flexible scraper is larger than the inner diameter of the pipe; an annular groove is formed on the annular mounting base, the top support plate is installed in the annular groove, and the outer edge of the top support plate abuts against the annular flexible scraper; a slag collection groove is formed on the annular mounting base near the slag guide cover.

[0018] Preferably, the annular mounting base is threaded onto the suction tube; the inner ring of the annular mounting base has an internal thread, and the outer ring of the suction tube has an external thread that matches the internal thread.

[0019] Preferably, the positioning mechanism includes a mounting base, a motor, a drive gear, a driven gear, and a three-jaw chuck; the mounting base is disposed on the positioning frame, the motor is mounted on the mounting base, the drive gear is coaxially fixed to the motor output shaft, the driven gear is rotatably connected to the mounting base around its axis, and the drive gear and the driven gear are meshed; the three-jaw chuck is coaxially fixed to the driven gear and is used to clamp the pipe fitting; the mounting base has a first through hole, and the driven gear and the three-jaw chuck both have second through holes at their axial positions, allowing one end of the pipe fitting to extend to one side of the mounting base by passing through the second through hole and the first through hole in sequence.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] 1. This invention, by setting up a slag-guiding and suction component and a sealing slag-collecting component, extends the suction structure into the interior of a small-diameter pipe fitting directly opposite the cutting point to collect molten slag. A relatively closed airflow channel is constructed inside the pipe fitting, forming a directional airflow. This allows for the directional collection and real-time suction and discharge of molten slag from the cutting source, achieving extremely high slag removal cleanliness of the inner wall of the pipe fitting, ensuring the integrity of the anti-corrosion coating on the inner wall of the pipe fitting, and improving the processing quality and safety performance of the metal pipe fittings for children's dining chairs.

[0022] 2. This invention, by setting up a flexible isolation component, utilizes an annular flexible scraper to elastically adhere to the inner wall of the pipe fitting, and in conjunction with the adaptive support structure of the top support plate, can simultaneously scrape away fine slag particles attached to the pipe wall during the pipe fitting's rotation. Combined with the slag collection groove to receive the falling slag particles, it achieves refined slag removal treatment of the pipe wall, further improving the cleanliness of the inner wall of the pipe fitting. At the same time, the flexible contact structure can fully protect the inner wall coating of the pipe fitting from damage, balancing the slag removal effect and the surface quality of the pipe fitting.

[0023] 3. This invention uses a sealed slag collection assembly with an annular airbag and a flow guide grid plate. The annular airbag expansion structure achieves adaptive sealing of the non-cut end of the pipe fitting. The bearing rotation connection structure keeps the slag collection and air supply parts stationary. Combined with the inclined flow guide grid plate and slag collection drawer to collect large particles of molten slag escaping in the opposite direction, it can ensure the continuous stability of the airflow field inside the pipe, achieve comprehensive collection of molten slag in the entire pipe section, improve the comprehensiveness and reliability of molten slag collection, and facilitate the centralized cleaning and recycling of molten slag. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention without the frame;

[0027] Figure 3 This is a three-dimensional structural diagram of the positioning mechanism and slag suction assembly of the present invention from a first perspective.

[0028] Figure 4 This is a two-dimensional structural diagram of the positioning mechanism and slag suction assembly of the present invention from a second perspective.

[0029] Figure 5 This is a three-dimensional structural diagram of the slag-guiding and suction assembly of the present invention;

[0030] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the slag-guiding and suction assembly of the present invention;

[0031] Figure 7 This is a three-dimensional structural diagram of the elastic support rod of the present invention;

[0032] Figure 8 This is a partial cross-sectional three-dimensional structural diagram of the sealing slag collection assembly of the present invention;

[0033] Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the flexible isolation component of the present invention;

[0034] Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the annular mounting base of the present invention.

[0035] In the diagram: 1. Frame; 2. Positioning frame; 3. Laser cutter; 4. Positioning mechanism; 41. Mounting base; 42. Motor; 43. Drive gear; 44. Driven gear; 45. Three-jaw chuck; 5. Pipe fitting; 6. Slag guide and suction assembly; 61. Suction pipe; 62. Slag guide cover; 63. First mounting frame; 64. Conical guide head; 65. Elastic support rod; 66. Contact; 67. Ball bearing; 68. Second mounting frame; 69. Positioning bolt; 7. Sealing slag collection assembly; 71. Sealing end cap; 72. Annular component; 73. Annular airbag; 74. Connecting pipe; 75. Air supply valve; 76. Guide grid plate; 77. Filter tank; 78. Collection box; 79. Slag collection drawer; 8. Flexible isolation assembly; 81. Annular mounting base; 82. Annular flexible scraper; 83. Top support plate; 84. Molten slag collection tank. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1-6The intelligent laser cutting equipment for processing metal parts of children's dining chairs shown includes a frame 1, a positioning frame 2 inside the frame 1, and a laser cutter 3 on one side of the positioning frame 2. It is understood that the laser cutter 3 is existing technology and will not be described in detail. A positioning mechanism 4 is provided on the positioning frame 2, which is used to clamp and drive a pipe 5 to rotate around its axis. A slag-guiding and suction assembly 6 is provided on the positioning mechanism 4. The slag-guiding and suction assembly 6 includes: a suction pipe 61, a slag-guiding cover 62, a conical guide head 64, and a second mounting bracket 68. The suction pipe 61 is coaxially inserted into the pipe 5, with one end of the suction pipe 61 close to the laser cutting position on the pipe 5, and the other end of the suction pipe 61 connected to an external air extraction machine via a quick-connect coupling. The slag-guiding cover 62 is coaxially disposed at the end of the suction pipe 61. The slag-guiding cover 62 has a trumpet-shaped structure, with the large opening of the trumpet-shaped structure positioned close to the cutting position of the pipe 5, and the small opening of the trumpet-shaped structure positioned close to the cutting position of the pipe 5. The ends of the suction pipes 61 are connected by threads; the maximum outer diameter of the slag guide cover 62 is smaller than the inner diameter of the pipe fitting 5, so that a gap is formed between the slag guide cover 62 and the pipe fitting 5 to reduce heat transfer to the slag guide cover 62; the conical guide head 64 is coaxially fixed inside the slag guide cover 62 through the first mounting bracket 63, and the outside air communicates with the inside of the suction pipe 61 through the gap between the slag guide cover 62 and the conical guide head 64; the second mounting bracket 68 is slidably connected to the positioning mechanism 4 along the length of the pipe fitting 5, and the suction pipe 61 is fixed to the second mounting bracket 68; the second mounting bracket 68 is threaded with a positioning bolt 69; when the end of the positioning bolt 69 abuts against the positioning mechanism 4, the position of the second mounting bracket 68 is locked by the positioning bolt 69; a sealing slag collection assembly 7 is provided at the end of the pipe fitting 5 away from the slag guide suction assembly 6; the sealing slag collection assembly 7 is used to cooperate with the slag guide suction assembly 6 to form a relatively closed airflow channel inside the pipe fitting 5.

[0038] It should be noted that during use, the pipe fitting 5 is clamped onto the positioning mechanism 4, aligning the area to be processed on the pipe fitting 5 with the processing position of the laser cutting machine 3. The position of the second mounting bracket 68 on the positioning mechanism 4 is adjusted, causing the suction pipe 61 to extend axially into the pipe fitting 5 until the slag guide cover 62 is aligned with the inner side of the cutting point of the pipe fitting 5. The positioning bolts 69 are then tightened to fix the axial position of the second mounting bracket 68. The sealing slag collection assembly 7 is then assembled at the end of the pipe fitting 5 away from the slag guide suction assembly 6, sealing the non-cutting end of the pipe fitting 5 and forming a relatively closed airflow channel inside the pipe fitting 5 in conjunction with the slag guide suction assembly 6. The external air pump is then started, creating negative pressure inside the suction pipe 61. Simultaneously, airflow is supplied into the pipe fitting 5 from the sealing slag collection assembly 7, forming a directional airflow from the non-cutting end to the cutting end within the pipe fitting 5. When the laser cutting machine 3 cuts the pipe fitting 5, the molten slag produced splashes into the pipe fitting 5 and is blocked and collected by the slag guide cover 62. The slag then flows along the inner wall of the slag guide cover 62 towards the inlet of the suction pipe 61. The conical guide head 64 is fixed inside the slag guide cover 62 by the first mounting bracket 63. It can rectify the airflow to the suction pipe 61, reduce airflow turbulence, and guide the molten slag into the suction pipe 61 through the gap between the slag guide cover 62 and the conical guide head 64. Finally, the slag is sucked out by the external air pump along with the airflow.

[0039] By extending the slag-guiding and suction component 6 into the pipe fitting 5 for directional slag removal, the limitation of existing all-area suction devices being unable to enter the interior of small-diameter pipe fittings 5 ​​is overcome. Molten slag can be collected and sucked from the cutting source, significantly reducing the probability of slag adhering to the inner wall of the pipe fitting 5. The sealing slag collection component 7, in conjunction with the slag-guiding and suction component 6, forms a closed airflow channel, creating a stable directional airflow inside the pipe fitting 5. This drives the dispersed molten slag continuously towards the suction end, improving the slag collection efficiency. The conical guide head 64 rectifies the inlet airflow, increasing the negative pressure intensity at the suction port, while simultaneously guiding the molten slag smoothly into the suction pipe 61, reducing the risk of slag accumulation and blockage at the pipe opening and ensuring the continuous and stable operation of the slag removal process.

[0040] See Figures 6-7 The slag suction assembly 6 also includes multiple elastic support rods 65 and contacts 66; the multiple elastic support rods 65 are equally spaced around the axis of the suction pipe 61, and the multiple elastic support rods 65 are hinged to the suction pipe 61 through mounting blocks; the contacts 66 are fixed to the ends of the elastic support rods 65, and the contacts 66 abut against the inner wall of the pipe fitting 5; the elastic support rods 65 have an elastic arc-shaped structure, and provide continuous contact force between the contacts 66 and the pipe fitting 5; the contacts 66 have an installation groove, and the installation groove is provided with balls 67; the contacts 66 abut against the inner wall of the pipe fitting 5 through the balls 67.

[0041] It should be noted that during the process of the suction pipe 61 extending into the pipe fitting 5, the multiple elastic support rods 65 undergo elastic deformation due to the compression of the inner wall of the pipe fitting 5. Relying on their own elastic restoring force, they drive the contact 66 to abut against the inner wall of the pipe fitting 5. The multiple elastic support rods 65 are arranged at equal intervals around the axis of the suction pipe 61, so that the suction pipe 61 and the pipe fitting 5 remain coaxial. When the positioning mechanism 4 drives the pipe fitting 5 to rotate, the ball bearings 67 in the mounting groove of the contact 66 roll in contact with the inner wall of the pipe fitting 5, rolling synchronously with the rotation of the pipe fitting 5. This keeps the overall position of the slag suction assembly 6 stable while reducing the frictional resistance with the inner wall of the pipe fitting 5 and reducing wear on the inner wall of the pipe fitting 5.

[0042] Multiple flexible support rods 65 are evenly arranged circumferentially, adapting to pipe fittings 5 ​​with different inner diameters. This provides stable circumferential support for the suction pipe 61, ensuring that the slag guide cover 62 is always precisely aligned with the cutting point, preventing the slag removal range from shifting due to the skewness of the suction pipe 61. Ball bearings 67 are installed inside the contact 66, converting the sliding friction between the contact 66 and the inner wall of the pipe fitting 5 into rolling friction. This significantly reduces the frictional resistance during pipe fitting 5 rotation, reduces the risk of wear on the inner wall coating, improves the smoothness of rotation operations, and extends the service life of the support structure.

[0043] See Figure 3 and Figure 8 The sealed slag collection assembly 7 includes a sealing end cap 71, a connecting pipe 74, an air supply valve 75, and a flow guide grid plate 76; the sealing end cap 71 is coaxially mounted on the non-cut end of the pipe fitting 5; the connecting pipe 74 is coaxially connected to the sealing end cap 71; the air supply valve 75 is installed on the connecting pipe 74; the flow guide grid plate 76 is inclinedly disposed in the cavity inside the sealing end cap 71; a filter groove 77 is formed on the flow guide grid plate 76; the sealed slag collection assembly 7 includes an annular component 72 and an annular airbag 73; the annular airbag 73... The sealing end cap 71 and the annular component 72 are rotatably connected by bearings between the pipe fitting 5 and the annular component 72. The sealing slag collection assembly 7 includes a collection box 78 and a slag collection drawer 79. The collection box 78 is located at the bottom of the sealing end cap 71, and the interior of the collection box 78 communicates with the inner cavity of the sealing end cap 71. The slag collection drawer 79 is located in the collection box 78. The upper end of the flow guide grid plate 76 faces the pipe opening of the pipe fitting 5, and the lower end of the flow guide grid plate 76 extends to the top opening of the collection box 78.

[0044] It should be noted that when assembling the sealing slag collection assembly 7, the annular component 72 is inserted into the non-cut end of the pipe fitting 5, and gas is injected into the annular air bladder 73. This causes the annular air bladder 73 to expand and tighten between the inner wall of the pipe fitting 5 and the annular component 72, achieving a sealed connection between the annular component 72 and the pipe fitting 5. The sealing end cap 71 is rotatably connected to the annular component 72 via a bearing. When the pipe fitting 5 drives the annular component 72 to rotate, the sealing end cap 71 remains stationary. External air enters the connecting pipe 74 through the air supply valve 75, and then flows into the interior of the pipe fitting 5 through the cavity of the sealing end cap 71. The flow rate of the supplied air can be controlled by adjusting the opening of the air supply valve 75. Large molten slag particles that splash backward or migrate with the airflow enter the cavity of the sealed end cap 71 and impact the inclined guide grid plate 76. The large molten slag particles are intercepted by the filter tank 77 and slide down along the inclined surface of the guide grid plate 76 into the slag collection drawer 79 in the collection box 78. The airflow then passes through the filter tank 77 and continues to flow into the pipe 5.

[0045] The sealing method, employing an annular airbag 73 for expansion, adapts to dimensional deviations at the ends of pipe fitting 5, ensuring sealing performance at the pipe opening and preventing airflow leakage from gaps that could affect the stability of directional airflow. The sealing end cap 71 and the annular component 72 are rotatably connected via bearings, ensuring a sealed environment while keeping the slag collection and air supply structures stationary. This prevents slag from spilling from the slag collection drawer 79 as pipe fitting 5 rotates, improving the reliability of slag collection. The flow-guiding grid plate 76 intercepts large slag particles and directs them into the slag collection drawer 79, achieving centralized collection of escaping slag without obstructing normal airflow. Combined with the front-end slag-guiding suction component 6, this complements the system, achieving slag collection throughout the entire pipe section and further reducing the amount of slag residue on the inner wall of pipe fitting 5.

[0046] See Figure 9 A flexible isolation component 8 is provided on the suction pipe 61; the flexible isolation component 8 is used to isolate the cutting position of the pipe 5 so that the molten slag is driven by the directional airflow in front, flows towards the suction port at the cutting end and is sucked away by the suction pipe 61.

[0047] It should be noted that the flexible isolation component 8 extends into the pipe fitting 5 simultaneously with the suction pipe 61, located behind the slag guide cover 62. During the cutting operation, the flexible isolation component 8 isolates the cutting position of the pipe fitting 5 from the deeper areas of the pipe fitting 5, concentrating the directional airflow within the pipe on the vicinity of the cutting point, thereby enhancing the airflow velocity and suction effect in the cutting area. The scraped-off molten slag is driven by the directional airflow in front, flowing towards the suction port at the cutting end, and is ultimately sucked away by the suction pipe 61, preventing the molten slag from diffusing and remaining deep within the pipe fitting 5.

[0048] The flexible isolation component 8 axially separates the internal space of the pipe fitting 5, reducing airflow diffusion loss into the depth of the pipe fitting 5, increasing airflow intensity in the cutting area, and enhancing the slag suction and conveying effect. Simultaneously, it prevents un-suctioned slag from migrating into the depth of the pipe fitting 5, reducing the amount of slag residue in the depth of the pipe fitting 5 and further improving the cleanliness of the inner wall slag removal. Combined with the front-end slag-guiding and suction structure and the tail-end sealing and slag-collecting structure, it comprehensively covers slag of different particle sizes and different movement directions, improving the overall slag removal effect.

[0049] Example 2: The technical solution of this example differs from that of Example 1 in that: (See below) Figures 9-10 The flexible isolation component 8 includes an annular mounting base 81, an annular flexible scraper 82, a top support 83, and a slag collection groove 84. The annular mounting base 81 is coaxially mounted on the suction pipe 61. The annular flexible scraper 82 is mounted on the annular mounting base 81, and the outer diameter of the annular flexible scraper 82 is larger than the inner diameter of the pipe fitting 5. An annular groove is formed on the annular mounting base 81, and the top support 83 is installed in the annular groove, with the outer edge of the top support 83 abutting against the annular flexible scraper 82. A slag collection groove 84 is formed on the annular mounting base 81 near the slag guide cover 62. The annular mounting base 81 is threaded onto the suction pipe 61. The inner ring of the annular mounting base 81 has an internal thread, and the outer ring of the suction pipe 61 has an external thread that matches the internal thread.

[0050] It should be noted that the annular flexible scraper 82 abuts against the inner wall of the pipe fitting 5, generating static friction. Since the annular mounting base 81 and the suction pipe 61 are connected by threads, when the pipe fitting 5 rotates, it drives the annular flexible scraper 82 to rotate synchronously. Under the threaded engagement between the annular mounting base 81 and the suction pipe 61, the annular flexible scraper 82 slides along the pipe fitting 5 towards its cutting position, thereby scraping off the fine molten slag particles adhering to the pipe wall. Most of the scraped-off molten slag flows with the directional airflow towards the suction pipe 61 and is discharged. A small amount of molten slag that falls backwards is temporarily stored in the molten slag collection tank 84.

[0051] The top support plate 83 provides continuous and stable support force to the annular flexible scraper plate 82, which can adapt to the slight dimensional deviations and ellipticity of the inner wall of the pipe fitting 5, ensuring that the scraper plate uniformly adheres to the pipe wall around its entire circumference, thereby improving the cleanliness of scraping fine slag. The annular flexible scraper plate 82 is made of flexible material and will not scratch the anti-corrosion coating of the inner wall of the pipe fitting 5, thus ensuring the surface quality of the pipe fitting 5 while removing slag. The slag collection tank 84 can collect a small amount of molten slag that falls back, preventing slag from falling again and contaminating the cleaned pipe wall area, further ensuring the slag removal effect. Combined with the aforementioned suction and slag collection structure, a complete slag removal process can be achieved from source suction to fine scraping of the pipe wall.

[0052] See Figures 1-4It is understood that this application does not limit the specific structure and installation method of the positioning mechanism 4. The following only provides a feasible technical solution. The positioning mechanism 4 includes a mounting base 41, a motor 42, a drive gear 43, a driven gear 44, and a three-jaw chuck 45. The mounting base 41 is set on the positioning frame 2. The motor 42 is mounted on the mounting base 41. The drive gear 43 is coaxially fixed to the output shaft of the motor 42. The driven gear 44 is rotatably connected to the mounting base 41 around its axis. The drive gear 43 and the driven gear 44 are meshed. The three-jaw chuck 45 is coaxially fixed to the driven gear 44 and is used to clamp the pipe 5. A first through hole is opened on the mounting base 41. A second through hole is opened at the axial position of the driven gear 44 and the three-jaw chuck 45, allowing one end of the pipe 5 to pass through the second through hole and the first through hole in sequence and extend to one side of the mounting base 41.

[0053] It should be noted that when clamping the pipe fitting 5, one end of the pipe fitting 5 is passed through the second through hole of the three-jaw chuck 45 and the first through hole of the mounting base 41. After adjusting the axial position of the pipe fitting 5, the pipe fitting 5 is clamped and fixed by the three-jaw chuck 45. After starting the motor 42, the output shaft of the motor 42 drives the drive gear 43 to rotate, which in turn drives the driven gear 44 to rotate around its own axis through meshing transmission. This, in turn, drives the three-jaw chuck 45 and the clamped pipe fitting 5 to rotate synchronously, so that the laser cutting machine 3 can cut different positions of the pipe fitting 5 in the circumferential direction.

[0054] The pipe fitting 5 is driven by gear transmission, ensuring high transmission precision and stable rotation speed, thus guaranteeing the dimensional accuracy of the circumferential cutting of the pipe fitting 5. The three-jaw chuck 45 can accommodate pipe fittings 5 ​​of different outer diameters, providing convenient and secure clamping and preventing movement of the pipe fitting 5 during cutting. Through holes in the mounting base 41 and gear allow the pipe fitting 5 to pass through, facilitating axial feeding and through-type clamping, adapting to the processing needs of pipe fittings 5 ​​of different lengths. Combined with the aforementioned built-in slag removal structure, internal slag removal can be completed simultaneously during the rotational cutting of the pipe fitting 5, achieving simultaneous cutting and slag removal and significantly improving processing efficiency.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart laser cutting device for processing metal parts of children's dining chairs, comprising a frame (1), a positioning frame (2) disposed inside the frame (1), and a laser cutting machine (3) disposed on one side of the positioning frame (2); a positioning mechanism (4) disposed on the positioning frame (2), characterized in that: The positioning mechanism (4) is provided with a slag-guiding and suction assembly (6); the slag-guiding and suction assembly (6) includes: The suction tube (61) is coaxially inserted into the fitting (5), and one end of the suction tube (61) is connected to an external vacuum pump through a quick connector; A slag guide cover (62) is coaxially disposed at the end of the suction pipe (61); The conical guide head (64) is coaxially fixed inside the slag guide cover (62) by the first mounting bracket (63), and the outside air communicates with the inside of the suction pipe (61) through the gap between the slag guide cover (62) and the conical guide head (64); The second mounting bracket (68) is slidably connected to the positioning mechanism (4) along the length of the pipe (5), and the suction pipe (61) is fixed to the second mounting bracket (68); the second mounting bracket (68) is threaded with a positioning bolt (69); A sealing slag collection component (7) is provided at one end of the pipe fitting (5) away from the slag suction component (6); the sealing slag collection component (7) is used to cooperate with the slag suction component (6) to form a relatively closed airflow channel inside the pipe fitting (5).

2. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 1, characterized in that: The slag suction assembly (6) includes multiple elastic support rods (65) and contacts (66); the multiple elastic support rods (65) are arranged at equal intervals around the axis of the suction pipe (61), and the multiple elastic support rods (65) are hinged to the suction pipe (61) through mounting blocks; the contacts (66) are fixed at the ends of the elastic support rods (65), and the contacts (66) abut against the inner wall of the pipe fitting (5); the elastic support rods (65) are elastic arc-shaped structures, and provide continuous contact force between the contacts (66) and the pipe fitting (5).

3. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 2, characterized in that: The contact (66) has an installation groove, and a ball (67) is provided in the installation groove; the contact (66) abuts against the inner wall of the pipe (5) through the ball (67).

4. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 1, characterized in that: The sealed slag collection assembly (7) includes a sealing end cap (71), a connecting pipe (74), an air supply valve (75), and a flow guide grid plate (76); the sealing end cap (71) is coaxially covered on the non-cut end of the pipe fitting (5); the connecting pipe (74) is coaxially connected to the sealing end cap (71); the air supply valve (75) is installed on the connecting pipe (74); the flow guide grid plate (76) is inclinedly arranged in the cavity inside the sealing end cap (71); the flow guide grid plate (76) is provided with filter grooves (77).

5. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 4, characterized in that: The sealing slag collection assembly (7) includes an annular component (72) and an annular airbag (73); the annular airbag (73) is disposed between the pipe (5) and the annular component (72), and the sealing end cap (71) and the annular component (72) are rotatably connected by a bearing.

6. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 4, characterized in that: The sealed slag collection assembly (7) includes a collection box (78) and a slag collection drawer (79); the collection box (78) is located at the bottom of the sealing end cap (71), and the interior of the collection box (78) is connected to the inner cavity of the sealing end cap (71); the slag collection drawer (79) is located in the collection box (78); the upper end of the flow guide grid plate (76) faces the pipe opening of the pipe fitting (5), and the lower end of the flow guide grid plate (76) extends to the top opening of the collection box (78).

7. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 1, characterized in that: The suction pipe (61) is provided with a flexible isolation component (8); the flexible isolation component (8) is used to isolate the cutting position of the pipe fitting (5) so that the molten slag is driven by the directional airflow in front, flows towards the suction port at the cutting end and is sucked away by the suction pipe (61).

8. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 7, characterized in that: The flexible isolation component (8) includes an annular mounting base (81), an annular flexible scraper (82), a top support plate (83), and a slag collection groove (84); the annular mounting base (81) is coaxially arranged on the suction pipe (61); the annular flexible scraper (82) is arranged on the annular mounting base (81), and the outer diameter of the annular flexible scraper (82) is larger than the inner diameter of the pipe fitting (5); an annular groove is provided on the annular mounting base (81), the top support plate (83) is installed in the annular groove, and the outer edge of the top support plate (83) abuts against the annular flexible scraper (82); a slag collection groove (84) is provided on the annular mounting base (81) near the slag guide cover (62).

9. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 8, characterized in that: The annular mounting base (81) is threaded onto the suction tube (61); the inner ring of the annular mounting base (81) has an internal thread, and the outer ring of the suction tube (61) has an external thread that matches the internal thread.

10. The intelligent laser cutting equipment for processing metal parts of children's dining chairs according to claim 1, characterized in that: The positioning mechanism (4) includes a mounting base (41), a motor (42), a drive gear (43), a driven gear (44), and a three-jaw chuck (45). The mounting base (41) is disposed on the positioning frame (2), the motor (42) is mounted on the mounting base (41), the drive gear (43) is coaxially fixed to the output shaft of the motor (42), the driven gear (44) is rotatably connected to the mounting base (41) around its axis, and the drive gear (43) and the driven gear (44) are meshed together. The three-jaw chuck (45) is coaxially fixed to the driven gear (44) and is used to clamp the pipe fitting (5). A first through hole is provided on the mounting base (41), and a second through hole is provided at the axial position of the driven gear (44) and the three-jaw chuck (45), allowing one end of the pipe fitting (5) to extend to one side of the mounting base (41) in sequence through the second through hole and the first through hole.

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