A laser welding device for machining metal parts

Abstract

The present invention relates to the field of laser welding equipment, and discloses a laser welding device for machining metal parts, including a head feeding mechanism located on the working platform for conveying the sealed welding heads required for tubular metal components; an alternating feeding mechanism located on the belt transmission member, which cooperates with the external thread column for conveying the tubular metal components to be welded; a retracting and lifting mechanism located on the fixed frame, which cooperates with the additional clamping frame and the slide rail structure of the limit slide frame for lifting the components completed with welding; and a discharging guiding mechanism located on the working platform, which cooperates with the top block structure of the traction shaft for receiving and outputting the welded finished products. Through the cooperation of the double-station alternating feeding mechanism and the belt transmission member, and the cooperation of the alternating feeding mechanism through the limit slide rail and the limit channel, it is ensured that the feeding mechanism will not have a route conflict during operation. The double-station alternating feeding can realize the high-speed and uninterrupted operation of the welding operation, and reduce the material change time.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding equipment, and particularly to a laser welding device for machining metal parts. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a laser beam with a high energy density as a heat source. Laser welding is an important aspect of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process belongs to the heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses inward through heat conduction. By controlling parameters such as the width, energy, peak power, and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool.

[0003] Existing laser welding processes still rely on manual labor for feeding, docking, and handling of finished products in many cases, resulting in low efficiency and human errors in the production process. Especially during the welding process of the ends of tubular metal parts, multiple steps such as feeding, docking, and conveying require human participation. In traditional laser welding, the docking accuracy of the ends of tubular metal parts is a key factor in welding quality. However, in the existing technology, the positioning accuracy and clamping stability are insufficient, which easily leads to inaccurate docking and excessive deviation during welding, thus affecting the welding quality and the stability of the finished product. At the same time, the feeding system often has problems such as route conflicts and unstable feeding. Especially when the feeding sequence needs to be adjusted multiple times or feeding is carried out in complex processes, these problems are particularly prominent and easily lead to unstable operation of the equipment. In the process of finished product handling and discharging after welding by traditional laser welding equipment, it often relies on manual handling or manual adjustment of the position, which not only increases the workload but also affects the production efficiency. Especially during mass production, the automatic discharging and handling of finished products are particularly important. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, the present invention provides a laser welding device for machining metal parts, which solves the problems that existing laser welding processes still rely on manual labor for feeding, docking, and handling of finished products in many cases, resulting in low efficiency and human errors in the production process.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A laser welding device for machining metal parts, comprising:

[0006] A fixed frame for fixing the structure of the laser welding device for machining metal parts;

[0007] An operation platform is located on the fixed frame and is used for fixing the conveying structure of the tubular metal original parts;

[0008] The belt drive is located on the working platform and is used to form the reciprocating conveying force for the double-station of tubular metal components;

[0009] The limit slide rail is located on the working platform and is used to limit the linear displacement conveying of the tubular metal component conveying structure;

[0010] The limit channel is located on the working platform and is used to guide the conveying of the tubular metal component conveying structure;

[0011] The trapezoidal top contact frame is located on the working platform and is used for the discharging and top feeding operation when the tubular metal component is welded and retracted;

[0012] The end feeding mechanism is located on the working platform and is used to convey the sealed welding ends required for the tubular metal components;

[0013] The alternating feeding mechanism is located on the belt drive and is used to convey the welded tubular metal components in cooperation with the external thread column;

[0014] The retracting and lifting mechanism is located on the fixed frame and is used to lift the welded components in cooperation with the additional clamping frame and the slide rail structure of the limit slide frame;

[0015] The discharging guiding mechanism is located on the working platform and is used to receive and output the welded finished products in cooperation with the top block structure of the traction shaft;

[0016] The roller output part is located on the fixed frame and conveys the welded finished products output by the discharging guiding mechanism.

[0017] Preferably, the working platform is fixedly connected to the fixed frame, the belt drive is arranged on the working platform and runs across the working platform, the two sides of the limit slide rail are fixedly connected to the working platform relatively, the two sides of the limit channel are arranged on the working platform relatively and are located outside the limit slide rail, the two sides of the trapezoidal top contact frame are fixedly connected to the working platform relatively and are located inside the limit slide rail, the end feeding mechanism is arranged on one side of the working platform, the two sides of the alternating feeding mechanism are arranged on the working platform relatively and displace through the limit slide rail, the retracting and lifting mechanism is correspondingly arranged on the alternating feeding mechanism, the two sides of the discharging guiding mechanism are arranged on the side wall of the working platform relatively, and the roller output part is arranged at the bottom of the fixed frame.

[0018] Preferably, the end feeding mechanism includes a hopper-shaped box, a longitudinal beam, and a real-time locking component. The hopper-shaped box is of a hopper shape and is fixedly connected to one side of the operation platform. Meanwhile, a circular opening is arranged at the bottom facing one side of the alternating feeding mechanism. The longitudinal beam is fixedly connected to the side of the operation platform close to the hopper-shaped box. A laser welding head is arranged at the top of the longitudinal beam and faces the circular opening position of the hopper-shaped box. A rotating material wheel is rotatably connected to the side wall of the circular opening inside the hopper-shaped box. A circumferentially distributed material conveying groove is arranged on the outer ring part of the rotating material wheel. A threaded column is fixedly connected to the center part of the rotating material wheel facing the alternating feeding mechanism. One end of the threaded column away from the rotating material wheel is provided with a conical structure, and a threaded groove is arranged on the outer surface. The real-time locking component is arranged on the side of the longitudinal beam away from the rotating material wheel.

[0019] Preferably, the alternating feeding mechanism includes a linear slide and a docking drive component. The linear slide is slidably connected to the limit slide rail. A linear slide frame is slidably connected to the top of the linear slide in a direction perpendicular to the displacement direction of the linear slide. A traction arm is fixedly connected to the inside of the linear slide. One end of the traction arm away from the linear slide frame is fixedly connected to both sides of the belt end of the belt transmission component. The traction shaft is fixedly connected to one side of the linear slide frame. A pulley structure is arranged at the bottom end of the traction shaft and is slidably inserted into the inside of the limit channel. A push block structure of the traction shaft is arranged on the outer surface of the traction shaft. A material placing table is fixedly connected to the side of the linear slide frame away from the traction shaft. An arc-shaped centering plate with opposite sides is slidably connected to the top of the material placing table. An additional clamping frame is fixedly connected to the side of the arc-shaped centering plate away from the end feeding mechanism. A return spring two is connected between the arc-shaped centering plate and the material placing table. A limit slide frame is fixedly connected to the bottom of the material placing table. The limit slide frame is provided with multiple sets of inclined rail structures. The docking drive component is arranged on the side of the bottom of the material placing table close to the end feeding mechanism.

[0020] Preferably, the retracting and lifting mechanism includes a curved rod. The curved rod is provided with a straight part and an inclined part. A slider structure is arranged on the straight part and is slidably connected to the rail structure of the limit slide frame through the slider structure. The end of the inclined part of the curved rod is fixedly connected with a lifting arc block and extends below the additional clamping frame. A one-way rotating seat is fixedly connected to the bottom of the curved rod. A lifting arm is rotatably connected to the inside of the one-way rotating seat. A return spring three is arranged between the side wall of the lifting arm and the one-way rotating seat.

[0021] Preferably, the discharging guiding mechanism includes a socket seat and a material guiding frame. The socket seat is fixedly connected to both sides of the fixed frame. The material guiding frame is slidably connected inside the socket seat. An inclined material guiding plate is arranged at the top of the material guiding frame, and the inclined material guiding plate extends above the alternating feeding mechanism. The sides of the material guiding frame and the inclined material guiding plate facing the end feeding mechanism are both open structures. A positioning plate is arranged on the inner side wall of the socket seat, and both ends of the positioning plate are inclined and bent.

[0022] Preferably, the real-time locking component includes an internal gear disk and a linkage turntable. The internal gear disk is fixedly connected to the side of the vertical beam away from the material turning wheel and is coaxially arranged with the material turning wheel. The linkage turntable is fixedly connected to the rotating shaft of the material turning wheel and extends to the surface of the internal gear disk. Meshing teeth are slidably distributed on the outer circumference of the linkage turntable, and the meshing teeth are meshed with the inner tooth keys of the internal gear disk. A first reset spring is embedded between the meshing teeth and the side wall of the linkage turntable.

[0023] Preferably, the docking driving component includes a positioning cylinder and a pushing cylinder. The positioning cylinder is fixedly connected to the side of the material placing table facing the external thread column at the bottom. The pushing cylinder is slidably connected to one end of the positioning cylinder facing the external thread column. A spiral clamping strip structure is arranged inside the pushing cylinder. An internal gear ratchet is fixedly connected to the side of the positioning cylinder facing the pushing cylinder. Right-angle tooth keys are circumferentially distributed on the inner side wall of the internal gear ratchet. Equally spaced top contact arc strips are fixedly connected to the side of the pushing cylinder facing the positioning cylinder, and the top contact arc strips are attached to the right-angle tooth keys of the internal gear ratchet.

[0024] Preferably, a right-angle limiting part is arranged on the side of the one-way rotating seat facing the end feeding mechanism.

[0025] Preferably, an inclined transmission structure is arranged at the bottom of the material guiding frame and extends above the roller output member.

[0026] The present invention provides a laser welding device for machining metal parts, having the following beneficial effects:

[0027] 1. The present invention has a design of a double-station alternating feeding structure: Through the cooperation of the double-station alternating feeding mechanism and the belt transmission member, efficient feeding during the welding process is achieved. The two groups of alternating feeding mechanisms can move alternately under the drive of the belt transmission member, which not only ensures the continuity of the welding process but also avoids affecting the welding efficiency due to the conflict between the feeding mechanism and the working area. The alternating feeding mechanism ensures that there is no route conflict during operation through the cooperation of the limit sliding rail and the limit channel. The double-station alternating feeding can realize the high-speed and uninterrupted operation of the welding operation, reduce the material changing time, and avoid interference when the feeding mechanisms approach each other through the design of the limit channel and the protruding part, ensuring stable operation.

[0028] 2. Precise docking of the end feeding mechanism of the present invention: The end feeding mechanism precisely delivers the ends of the tubular components to be welded to the welding position through the cooperation of the hopper-shaped box and the transfer wheel. The external threaded column structure of the transfer wheel and the design of the linkage turntable enable the ends to be precisely introduced into the welding position, and welding is achieved between the laser welding head and the ends of the tubular components. The end feeding mechanism utilizes a precise docking structure to ensure the accuracy of each welding process. The design of the transfer wheel ensures the automatic docking of the tubular components and the ends without manual intervention.

[0029] 3. Cooperative operation of the retraction and lifting mechanism and the discharge guiding mechanism of the present invention: The retraction and lifting mechanism and the discharge guiding mechanism achieve the automatic lifting and discharging of the finished products through precise cooperation. After welding, the retraction and lifting mechanism uses the inclined slide rail structure to automatically lift the welded finished products, avoiding manual intervention. At the same time, the discharge guiding mechanism works synchronously to ensure that the finished products can be smoothly sent to the output position. The cooperation of the retraction and lifting mechanism and the discharge guiding mechanism enables the welded finished products to be automatically lifted and smoothly discharged, greatly reducing manual participation and operation errors. The lifting and discharging processes are carried out synchronously, ensuring the high efficiency of the production line.

[0030] 4. Design of the present invention with an automatic retraction and locking mechanism: The design of the automatic retraction and lifting mechanism and the locking mechanism enables the finished products to be smoothly retracted to the designated position for processing after welding. Through the locking structure of the pushing cylinder and the control of the rotating seat, the smoothness and error-free of the retraction process are ensured. Through the locking mechanism and the retraction device, the smooth retraction of the finished products is ensured, avoiding manual intervention. The real-time locking structure effectively prevents the accidental operation or misoperation of the equipment.

[0031] 5. Multiple synchronous collaborations of the present invention improve production efficiency: Each mechanism in the entire equipment, such as alternating feeding, end feeding, retraction and lifting, and discharge guiding, can cooperate synchronously to ensure the automation and high efficiency of the entire welding process. The synchronous progress of multiple processes enables the equipment to operate efficiently without manual intervention, reducing the manual operation time. The improvement of the automation level greatly enhances the overall production efficiency, especially suitable for high-frequency production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional schematic diagram of the laser welding device for machined metal parts of the present invention Figure 1 ;

[0033] Figure 2 is a three-dimensional schematic diagram of the laser welding device for machined metal parts of the present invention Figure 2 ;

[0034] Figure 3 is a three-dimensional schematic diagram of the laser welding device for machined metal parts of the present inventionFigure 3 ;

[0035] Figure 4 Schematic three - dimensional view of the laser welding device for machined metal parts of the present invention Figure 4 ;

[0036] Figure 5 Schematic diagram of the internal structure of the laser welding device for machined metal parts of the present invention;

[0037] Figure 6 Schematic view of the structure of the end - feeding mechanism of the present invention Figure 1 ;

[0038] Figure 7 Schematic view of the structure of the end - feeding mechanism of the present invention Figure 2 ;

[0039] Figure 8 Schematic diagram of the internal structure of the end - feeding mechanism of the present invention;

[0040] Figure 9 Schematic diagram of the surface structure of the working platform of the present invention;

[0041] Figure 10 Schematic view of the structure of the alternating feeding mechanism of the present invention Figure 1 ;

[0042] Figure 11 Schematic view of the structure of the alternating feeding mechanism of the present invention Figure 2 ;

[0043] Figure 12 Schematic view of the structure of the alternating feeding mechanism of the present invention Figure 3 ;

[0044] Figure 13 Schematic diagram of the structure of the docking drive assembly of the present invention;

[0045] Figure 14 Schematic diagram of the structure of the retraction and lifting mechanism of the present invention.

[0046] Among them, 1. Fixed frame; 2. Working platform; 3. Belt transmission part; 4. Limit slide rail; 5. Limit channel; 6. Trapezoidal top contact frame; 7. End feeding mechanism; 8. Alternate feeding mechanism; 9. Retracting and lifting mechanism; 10. Discharge guiding mechanism; 11. Roller output part; 71. Hopper-shaped box; 72. Vertically arranged beam; 73. Laser welding head; 74. Transfer wheel; 75. External thread column; 76. Internal gear disk; 77. Linkage turntable; 78. Meshing teeth; 79. First reset retaining spring; 81. Linear slide table; 82. Linear slide frame; 83. Tractive arm; 84. Tractive shaft; 85. Material placing table; 86. Arc-shaped centering plate; 87. Additional clamping frame; 88. Second reset retaining spring; 89. Positioning cylinder; 810. Pushing cylinder; 811. Internal gear ratchet; 812. Top contact arc bar; 813. Limit slide frame; 91. Curved rod; 92. One-way rotating seat; 93. Lifting arm; 94. Third reset retaining spring; 95. Lifting arc block; 101. Socket seat; 102. Material guiding frame; 103. Obliquely arranged material guiding plate; 104. Positioning plate. Specific embodiments

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Please refer to the attached Figure 1 - attached Figure 3, an embodiment of the present invention provides a laser welding device for machining metal parts, including: a fixed frame 1 for fixing the structure of the laser welding device for machining metal parts. An operation platform 2 is located on the fixed frame 1 for fixing the conveying structure of tubular metal components. A belt drive member 3 is located on the operation platform 2 for forming a reciprocating conveying force for a double-station of tubular metal components. A limit slide rail 4 is located on the operation platform 2 for restricting the linear displacement conveying of the tubular metal component conveying structure. A limit channel 5 is located on the operation platform 2 for guiding the conveying of the tubular metal component conveying structure. A trapezoidal top contact frame 6 is located on the operation platform 2 for discharging and ejecting materials when the tubular metal component is welded and retracted. A roller output member 11 is located on the fixed frame 1 for conveying the welded finished products output by the conveying and discharging guiding mechanism 10. The operation platform 2 is fixedly connected to the fixed frame 1. The belt drive member 3 is arranged on the operation platform 2 and traverses the operation platform 2. The two sides of the limit slide rail 4 are fixedly connected to the operation platform 2 relatively. The two sides of the limit channel 5 are arranged on the operation platform 2 relatively and are located outside the limit slide rail 4. The two sides of the trapezoidal top contact frame 6 are fixedly connected to the operation platform 2 relatively and are located inside the limit slide rail 4. An end feeding mechanism 7 is arranged on one side of the operation platform 2. The two sides of the alternating feeding mechanism 8 are arranged on the operation platform 2 relatively and displace along the limit slide rail 4. The retracting and lifting mechanism 9 is correspondingly arranged on the alternating feeding mechanism 8. The two sides of the discharging guiding mechanism 10 are arranged on the side wall of the operation platform 2 relatively. The roller output member 11 is arranged at the bottom of the fixed frame 1. First, this laser welding equipment is mainly aimed at the end welding operation of tubular metal parts. The whole equipment is installed on the fixed frame 1, and the operation platform 2 fixed on the fixed frame 1 is used as the main welding workbench surface. The whole welding operation is located on the operation platform 2. The belt drive member 3, which drives the alternating feeding mechanism 8 to perform double-station cyclic feeding, is installed on the operation platform 2. The limit slide rails 4 for restricting the double-station movement are installed on both sides of the operation platform 2 respectively to restrict the linear displacement of a set of feeding structures. To avoid route conflicts when the double-station structures approach each other, the limit channels 5 and the protruding part structures of the limit channels 5, which are relatively distributed on the operation platform 2, are also used to drive the two alternating feeding mechanisms 8 to displace outward when they approach each other, thus avoiding route conflicts. Under the drive of the belt drive member 3, when one of the two alternating feeding mechanisms 8 is feeding, the other is retracting and loading. When the alternating feeding mechanism 8 reaches the end feeding mechanism 7 installed on one side of the operation platform 2 along the limit slide rail 4, it will synchronously drive the end feeding mechanism 7 to release a single piece of the end to be welded. After automatic welding with the tubular component sent by the alternating feeding mechanism 8, the belt drive member 3 is used to drive the alternating feeding mechanism 8 that has completed welding to retract. The retracting and lifting mechanism 9 corresponding to it contacts the trapezoidal top contact frame 6 also relatively installed on the operation platform 2, driving the retracting and lifting mechanism 9 to push the welded finished product up, and then entering the discharging guiding mechanism 10, and the discharging guiding mechanism 10 completes the final guiding and discharging.Meanwhile, another set of alternate feeding mechanisms 8 for fallback feeding are displaced in the reverse direction to the end feeding mechanism 7 to start a new round of welding processing.

[0049] Please refer to the appendix Figure 1 - appendix Figure 8 , the end feeding mechanism 7 is located on the working platform 2 and is used to convey the sealed welding ends required for tubular metal components. The end feeding mechanism 7 includes a hopper-shaped box 71, a longitudinally arranged beam 72, and a real-time locking assembly. The hopper-shaped box 71 is of a hopper shape and is fixedly connected to one side of the working platform 2. At the same time, a circular opening is provided at the bottom facing one side of the alternate feeding mechanism 8. The longitudinally arranged beam 72 is fixedly connected to one side of the working platform 2 close to the hopper-shaped box 71. A laser welding head 73 is provided at the top of the longitudinally arranged beam 72 and faces the circular opening position of the hopper-shaped box 71. Inside the hopper-shaped box 71, a material transfer wheel 74 is rotatably connected to the side wall of the circular opening. A circumferentially distributed material transfer groove is provided on the outer ring part of the material transfer wheel 74. A male thread column 75 is fixedly connected to the central part of the material transfer wheel 74 facing the alternate feeding mechanism 8. One end of the male thread column 75 away from the material transfer wheel 74 is provided with a conical structure, and at the same time, a threaded groove is provided on the outer surface. The real-time locking assembly is arranged on the side of the longitudinally arranged beam 72 away from the material transfer wheel 74. The real-time locking assembly includes an internal gear disk 76 and a linkage turntable 77. The internal gear disk 76 is fixedly connected to the side of the longitudinally arranged beam 72 away from the material transfer wheel 74 and is coaxially arranged with the material transfer wheel 74. The linkage turntable 77 is fixedly connected to the rotating shaft of the material transfer wheel 74 and extends to the surface of the internal gear disk 76. Meshing teeth 78 are slidably connected to the outer circumference of the linkage turntable 77 and are meshed with the inner tooth keys of the internal gear disk 76. A first reset spring 79 is embedded between the meshing teeth 78 and the side wall of the linkage turntable 77. First of all, the hopper-shaped box 71 included in the end feeding mechanism 7 itself is of a hopper shape, used to input the welding ends required for tubular components, and is installed and fixed on one side of the working platform 2. The ends will gather along the hopper-shaped box 71 to the bottom of the hopper-shaped box 71. An open circular opening is provided at the bottom, and at the same time, a material transfer wheel 74 is installed at the circular opening position. The material transfer groove provided on the outer side of the material transfer wheel 74 can simultaneously embed the ends gathered at the bottom of the hopper-shaped box 71. A male thread column 75 with a conical head structure is installed at the center of the material transfer wheel 74 facing the alternate feeding mechanism 8, and a real-time locking assembly for real-time locking rotation is erected at the center of the rear side of the material transfer wheel 74. The internal gear disk 76 included in the real-time locking assembly is fixed on the longitudinally arranged beam 72 to keep still, while the linkage turntable 77 is installed on the rotating shaft of the material transfer wheel 74 and rotates with the material transfer wheel 74. At the same time, the meshing teeth 78 distributed on the outer side of the linkage turntable 77 generate a jacking force through the first reset spring 79 installed between the meshing teeth 78 and the linkage turntable 77, so that the linkage turntable 77 can be real-time wedged into the inner tooth key groove of the internal gear disk 76 after rotating with the material transfer wheel 74, so that the material transfer wheel 74 itself can be real-time stationary without external force driving and cannot rotate due to its own gravity.

[0050] Please refer to the attached Figure 1 - Attachment Figure 13, the alternating feeding mechanism 8 is located on the belt transmission member 3 and is used to convey the welded tubular metal components in cooperation with the external thread column 75. The alternating feeding mechanism 8 includes a linear slide 81 and a docking drive assembly. The linear slide 81 is slidably connected to the limit slide rail 4. A linear carriage 82 is slidably connected to the top of the linear slide 81 in a direction perpendicular to the displacement direction of the linear slide 81. A traction arm 83 is fixedly connected to the inner side of the linear slide 81. One end of the traction arm 83 away from the linear carriage 82 is fixedly connected to the two belt ends of the belt transmission member 3. A traction shaft 84 is fixedly connected to one side of the linear carriage 82. A pulley structure is provided at the bottom end of the traction shaft 84 and is slidably inserted into the inner part of the limit channel 5. A push block structure of the traction shaft 84 is arranged on the outer surface of the traction shaft 84. A material placing table 85 is fixedly connected to the side of the linear carriage 82 away from the traction shaft 84. An arc-shaped centering plate 86 with opposite sides is slidably connected to the top of the material placing table 85. An additional clamping frame 87 is fixedly connected to the side of the arc-shaped centering plate 86 away from the end feeding mechanism 7. A return spring two 88 is connected between the arc-shaped centering plate 86 and the material placing table 85. A limit slide frame 813 is fixedly connected to the bottom of the material placing table 85. The limit slide frame 813 is provided with a multi-group of inclined rail structures. The docking drive assembly is arranged on the bottom of the material placing table 85 near the end feeding mechanism 7. The docking drive assembly includes a positioning cylinder 89 and a pushing cylinder 810. The positioning cylinder 89 is fixedly connected to the bottom of the material placing table 85 on the side facing the external thread column 75. The pushing cylinder 810 is slidably connected to one end of the positioning cylinder 89 facing the external thread column 75. A spiral strip structure is arranged inside the pushing cylinder 810. An internal tooth ratchet 811 is fixedly connected to the side of the positioning cylinder 89 facing the pushing cylinder 810. Right-angle tooth keys are arranged on the inner side wall of the internal tooth ratchet 811 in a circumferential distribution. A top contact arc strip 812 is fixedly connected to the side of the pushing cylinder 810 facing the positioning cylinder 89. The top contact arc strip 812 is attached to the right-angle tooth keys of the internal tooth ratchet 811. There are two sets of the alternating feeding mechanism 8. The linear slides 81 included therein are respectively slidably installed on the limit slide rails 4. Through the traction arms 83 connected to the belt ends of the belt transmission member 3, the traction arms 83 installed on the two linear slides 81 are respectively connected to both sides of the belt ends of the belt transmission member 3. When the belt transmission member 3 operates, the two linear slides 81 displace in opposite directions along the corresponding limit slide rails 4. A linear carriage 82 perpendicular to its own displacement direction is installed on the top of the linear slide 81. The traction shaft 84 fixed to the side wall of the linear carriage 82 uses its own pulley structure to be inserted into the corresponding limit channel 5. When the two linear carriages 82 displace relative to each other and approach each other, the pulley structure of the traction shaft 84 will enter the protruding part of the limit channel 5 to drive the two linear carriages 82 to slide outward simultaneously to avoid route conflicts when approaching each other. The material placing table 85 installed inside the linear carriage 82 and the arc-shaped centering plates 86 distributed on both sides of the material placing table 85 hold and clamp the tubular components to be welded. The two arc-shaped centering plates 86 form a reverse extrusion force through the return spring two 88 installed between them and the material placing table 85.The driving arc centering plate 86 clamps the loaded tubular component, and the end of the tubular part is embedded in the additional clamping frame 87 installed at the rear end of the arc centering plate 86. The additional clamping frame 87 pushes the tubular component to follow the displacement and approach the end feeding mechanism 7. The docking drive assembly installed at the bottom of the material placing table 85 follows the material placing table 85 and approaches the external threaded column 75 included in the end feeding mechanism 7. The positioning cylinder 89 included in the docking drive assembly is fixed at the bottom of the material placing table 85. A rotatable push cylinder 810 is installed on the positioning cylinder 89 in the direction of the external threaded column 75. The spiral push bar structure arranged inside the positioning cylinder 89 can be docked with the spiral groove arranged on the outer surface of the external threaded column 75. The top contact arc bar 812 installed on the outer side of the push cylinder 810 fits on the inner wall of the driving internal gear ratchet 811 installed on the positioning cylinder 89 and is wedged with the right-angle tooth key inside the internal gear ratchet 811. The top contact arc bar 812 abuts in the right-angle groove of the internal gear ratchet 811, so that the push cylinder 810 can only rotate in one direction. When the push cylinder 810 follows the material placing table 85 and displaces to the external threaded column 75, the external threaded column 75 is inserted into the push cylinder 810 along the cone head structure. At the same time, the spiral push bar of the push cylinder 810 is inserted into the outer spiral groove of the external threaded column 75. With the continuous displacement of the material placing table 85, the reversely locked push cylinder 810 uses the spiral structural characteristics to drive the external threaded column 75 and the material transfer wheel 74 to rotate, so that the material transfer groove of the material transfer wheel 74 rotates the new end to the highest position until it is automatically docked with the tubular component input by the material placing table 85. Then, the laser welding head 73 included in the end feeding mechanism 7 is used to laser weld the end and the tubular component. After the welding is completed, the belt transmission part 3 drives the welded finished product to retreat with the corresponding clamping alternating feeding mechanism 8. At this time, the push cylinder 810 retreats along the external threaded column 75. At the same time, the push cylinder 810 releases the one-way lock and rotates. Thus, when the alternating feeding mechanism 8 retreats, the end feeding mechanism 7 will correspondingly stop the end feeding.,

[0051] Please refer to the appendix Figure 1 - appendix Figure 14, the retracting and lifting mechanism 9 is located on the fixed frame 1 and is used in cooperation with the additional clamping frame 87 and the slide rail structure of the limit slide frame 813 to lift the welded components. The retracting and lifting mechanism 9 includes a curved rod 91. The curved rod 91 is provided with a straight part and an inclined part. A slider structure is provided on the straight part and is slidably connected to the slide rail structure of the limit slide frame 813 through the slider structure. The end of the inclined part of the curved rod 91 is fixedly connected with a lifting arc block 95 and extends below the additional clamping frame 87. The bottom of the curved rod 91 is fixedly connected with a one-way rotating seat 92. A lifting arm 93 is rotatably connected inside the one-way rotating seat 92. A third reset retaining spring 94 is arranged between the side wall of the lifting arm 93 and the one-way rotating seat 92. A right-angle limiting part is arranged on one side of the one-way rotating seat 92 facing the end feeding mechanism 7. As the welded product is formed and retracts with the alternating feeding mechanism 8, the retracting and lifting mechanism 9 installed on the limit slide frame 813 will contact the trapezoidal top contact frame 6. An inclined slide rail structure is provided on the limit slide frame 813. The curved rod 91 included in the retracting and lifting mechanism 9 slides and displaces on the inclined slide rail structure of the limit slide frame 813 by using its own slider structure. The inclined part of the curved rod 91 extends below the additional clamping frame 87. At the same time, a lifting arc block 95 capable of touching the welded product is installed. The bottom of the curved rod 91 is provided with a rotatable lifting arm 93 through the one-way rotating seat 92. A closed structure is provided on one side of the one-way rotating seat 92 facing the end feeding mechanism 7. When the lifting arm 93 displaces and touches the trapezoidal top contact frame 6, the lifting arm 93 touches the closed structure at the same time and pushes the curved rod 91 to displace along the inclined slide rail structure of the limit slide frame 813. The inclined part of the curved rod 91 rises obliquely, and synchronously drives the lifting arc block 95 to lift the welded product, so that one end of it rises and disengages from the arc centering plate 86, facilitating the collection and output by the discharge guiding mechanism 10 installed on the operation platform 2. When the corresponding alternating feeding mechanism 8 is loading and feeding, after the lifting arm 93 touches the trapezoidal top contact frame 6, it will be touched and folded by the trapezoidal top contact frame 6, so that when feeding, the retracting and lifting mechanism 9 is in a closed state. Until the lifting arm 93 disengages from the trapezoidal top contact frame 6, the third reset retaining spring 94 installed between itself and the one-way rotating seat 92 drives the lifting arm 93 to rotate again and touches the closed structure of the one-way rotating seat 92, preparing for the retracting and top-feeding of the welded product, so that when the equipment is running, double-station feeding and automatic discharging can be carried out synchronously.

[0052] Please refer to the appendix Figure 1 - appendix Figure 9, the discharging guiding mechanism 10 is located on the working platform 2 and is used to receive and output the welded finished products in cooperation with the top block structure of the traction shaft 84. The discharging guiding mechanism 10 includes a socket seat 101 and a material guiding frame 102. The socket seat 101 is fixedly connected to both sides of the fixed frame 1. The material guiding frame 102 is slidably connected inside the socket seat 101. An inclined material guiding plate 103 is arranged at the top of the material guiding frame 102, and the inclined material guiding plate 103 extends above the alternating feeding mechanism 8. The sides of the material guiding frame 102 and the inclined material guiding plate 103 facing the end feeding mechanism 7 are both open structures. A positioning plate 104 is arranged on the inner side wall of the socket seat 101, and both ends of the positioning plate 104 are inclined and bent. An inclined transmission structure is arranged at the bottom of the material guiding frame 102 and extends above the roller output member 11. While the finished product is lifted by the retracting and lifting mechanism 9, the discharging guiding mechanism 10 is synchronously opened. The socket seat 101 included in the discharging guiding mechanism 10 is installed on both sides of the working platform 2, and a material guiding frame 102 that can move up and down is installed inside it. The inclined material guiding plate 103 arranged at the top of the material guiding frame 102 extends to the material placing table 85. At the same time, the sides of the material guiding frame 102 and the inclined material guiding plate 103 facing the finished product are set as open structures, so that the lifted welded finished product can be cut onto the inclined material guiding plate 103 and then enter the material guiding frame 102 along the inclined material guiding plate 103. Finally, it is guided by the material guiding frame 102 to the roller output member 11 installed at the bottom of the fixed frame 1 for guiding and output. While the alternating feeding mechanism 8 is loading and feeding in the early stage, the push block structure of the traction shaft 84 will contact the positioning plate 104 installed inside the material guiding frame 102, and drive the material guiding frame 102 to rise along the socket seat 101 through the inclined plate structures on both sides of the positioning plate 104, so as to avoid blocking the feeding.

[0053] Working principle: First, this laser welding equipment is mainly used for the end welding operation of tubular metal parts. The whole equipment is installed on the fixed frame 1, and the operation platform 2 fixed on the fixed frame 1 is used as the main welding workbench surface. The whole welding operation is located on the operation platform 2. The belt transmission part 3, which drives the alternating feeding mechanism 8 to perform double-station cyclic feeding, is installed on the operation platform 2. The limit slide rails 4 that limit the double-station movement are installed on both sides of the operation platform 2 to respectively limit the linear displacement of a set of feeding structures. To avoid the route conflict when the double-station structures approach each other, the limit channels 5 and the protruding part structures of the limit channels 5, which are relatively distributed on the operation platform 2, are also used to drive the two alternating feeding mechanisms 8 to displace outward when moving closer to each other, thus avoiding route conflicts. Under the drive of the belt transmission part 3, when one of the two alternating feeding mechanisms 8 is feeding, the other is retracting for loading. When the alternating feeding mechanism 8 reaches the end feeding mechanism 7 installed on one side of the operation platform 2 along the limit slide rail 4, it will synchronously drive the end feeding mechanism 7 to release a single end to be welded. After automatic welding with the tubular component sent by the alternating feeding mechanism 8, the belt transmission part 3 is used to drive the alternating feeding mechanism 8 that has completed welding to retract. The corresponding retracting lifting mechanism 9 contacts the trapezoidal top contact frame 6 also relatively installed on the operation platform 2, driving the retracting lifting mechanism 9 to push the welded finished product upward, and then entering the discharge guiding mechanism 10, where the discharge guiding mechanism 10 completes the final guiding for discharging. At the same time, the other alternating feeding mechanism 8 that is retracting for loading displaces in the reverse direction to the end feeding mechanism 7 to start a new round of welding processing. First, the hopper-shaped box 71 included in the end feeding mechanism 7 itself is hopper-shaped, used to input the ends required for welding the tubular components, and is installed and fixed on one side of the operation platform 2. The ends will gather along the hopper-shaped box 71 to the bottom of the hopper-shaped box 71. An open circular opening is provided at the bottom, and a transfer wheel 74 is installed at the circular opening position. The material transfer grooves opened on the outside of the transfer wheel 74 can simultaneously embed the ends gathered at the bottom of the hopper-shaped box 71. An externally threaded column 75 with a conical head structure is installed at the center of the transfer wheel 74 facing the alternating feeding mechanism 8 direction. A real-time locking and stopping component for real-time locking and rotating is installed at the center of the rear side of the transfer wheel 74. The internal gear disk 76 included in the real-time locking and stopping component is fixed on the vertical beam 72 to remain stationary, while the linkage turntable 77 is installed on the rotating shaft of the transfer wheel 74 and rotates with the transfer wheel 74. At the same time, the meshing teeth 78 distributed on the outside of the linkage turntable 77 generate a jacking force through the first reset retaining spring 79 installed between the linkage turntable 77, so that the linkage turntable 77 can be real-time engaged into the inner tooth key groove of the internal gear disk 76 after rotating with the transfer wheel 74, making the transfer wheel 74 itself unable to rotate due to its own gravity in the absence of external force drive. At the same time, there are two sets of alternating feeding mechanisms 8, and the linear sliders 81 included in them are respectively slidably installed on the limit slide rails 4.It is itself connected to the traction arm 83 connected to the belt end of the belt transmission member 3, and the traction arms 83 added to the two sets of linear sliders 81 are respectively connected to both sides of the belt end of the belt transmission member 3. When the belt transmission member 3 operates, the two sets of linear sliders 81 displace along the corresponding limit slide rails 4 in opposite directions. A linear carriage 82 perpendicular to the displacement direction of itself is added to the top of the linear slider 81, and the traction shaft 84 fixed to the side wall of the linear carriage 82 uses its pulley structure to be embedded into the corresponding limit channel 5. When the two sets of linear carriages 82 displace relative to each other and approach each other, the pulley structure of the traction shaft 84 will enter the protruding part of the limit channel 5 to drive the two linear carriages 82 to slide outward simultaneously to avoid route conflicts when approaching each other. A material placement table 85 added to the inner side of the linear carriage 82 and the arc-shaped centering plates 86 distributed on both sides of the material placement table 85 clamp the tubular components to be welded. The two arc-shaped centering plates 86 form a reverse extrusion force through the reset spring two 88 added between them and the material placement table 85, driving the arc-shaped centering plates 86 to clamp the loaded tubular components. The end of the tubular part is embedded into the additional clamping frame 87 added to the rear end of the arc-shaped centering plate 86, and the tubular component is pushed to follow the displacement by the additional clamping frame 87 and approach the end feeding mechanism 7. The docking drive assembly added to the bottom of the material placement table 85 will follow the material placement table 85 and approach the external thread column 75 included in the end feeding mechanism 7. The positioning cylinder 89 included in the docking drive assembly is fixed to the bottom of the material placement table 85, and a rotatable push cylinder 810 is added to the docking drive assembly in the direction of the external thread column 75. The spiral push bar structure arranged inside the positioning cylinder 89 can be docked with the spiral groove arranged on the outer surface of the external thread column 75. The top contact arc bar 812 added to the outside of the push cylinder 810 fits against the inner wall of the driving internal gear ratchet 811 added to the positioning cylinder 89 and is wedged with the right-angle tooth key inside the driving internal gear ratchet 811. The top contact arc bar 812 will abut against the right-angle groove of the driving internal gear ratchet 811, making the push cylinder 810 can only rotate in one direction. When the push cylinder 810 follows the material placement table 85 and displaces to the external thread column 75, the external thread column 75 will be embedded into the push cylinder 810 along the cone head structure. At the same time, the spiral push bar of the push cylinder 810 is embedded into the outer spiral groove of the external thread column 75. As the material placement table 85 continues to displace, the reversely locked push cylinder 810 uses the spiral structural characteristics to drive the external thread column 75 and the material transfer wheel 74 to rotate, so that the material transfer groove of the material transfer wheel 74 rotates the new end to the highest position until it is automatically docked with the tubular component input by the material placement table 85. Then, the laser welding head 73 included in the end feeding mechanism 7 is used to laser-weld the end and the tubular component. After the welding is completed, the belt transmission member 3 drives the welded finished product to retreat with the corresponding clamping alternating feeding mechanism 8. At this time, the push cylinder 810 retreats along the external thread column 75, and at the same time, the push cylinder 810 releases the one-way lock and rotates. Thus, when the alternating feeding mechanism 8 retreats, the end feeding mechanism 7 will correspondingly stop the end feeding. As the welded finished product is formed,When following the retraction of the alternating feeding mechanism 8, the retraction lifting mechanism 9 installed on the limit carriage 813 will contact the trapezoidal top contact frame 6. An inclined slide rail structure is provided on the limit carriage 813, and the curved rod 91 included in the retraction lifting mechanism 9 slides and displaces on the inclined slide rail structure of the limit carriage 813 by means of its own slider structure. The inclined portion of the curved rod 91 extends below the additional clamping frame 87. At the same time, a lifting arc block 95 capable of touching the welded finished product is installed. The bottom of the curved rod 91 is equipped with a rotatable lifting arm 93 through a one-way rotating seat 92. A closed structure is provided on one side of the one-way rotating seat 92 facing the end feeding mechanism 7. When the lifting arm 93 displaces and contacts the trapezoidal top contact frame 6, the lifting arm 93 touches the closed structure at the same time and pushes the curved rod 91 to displace along the inclined slide rail structure of the limit carriage 813. The inclined portion of the curved rod 91 rises obliquely, and simultaneously drives the lifting arc block 95 to lift the welded finished product, causing one end of it to rise and separate from the arc centering plate 86, facilitating the collection and output by the discharge guiding mechanism 10 installed on the working platform 2. When the corresponding alternating feeding mechanism 8 is loading and feeding, after the lifting arm 93 contacts the trapezoidal top contact frame 6, it will be touched and rotated and folded by the trapezoidal top contact frame 6, so that during feeding, the retraction lifting mechanism 9 is in a closed state. Until the lifting arm 93 disengages from the trapezoidal top contact frame 6, the reset spring three 94 installed between itself and the one-way rotating seat 92 drives the lifting arm 93 to rotate again and touch the closed structure of the one-way rotating seat 92, preparing for the retraction and pushing of the welded finished product. This enables the equipment to perform double-station feeding and automatic discharging synchronously during operation. While the finished product is lifted by the retraction lifting mechanism 9, the discharge guiding mechanism 10 is synchronously opened. The socket seat 101 included in the discharge guiding mechanism 10 is installed on both sides of the working platform 2, and a material guiding frame 102 capable of moving up and down is installed inside it. The inclined material guiding plate 103 provided at the top of the material guiding frame 102 extends to the material placing table 85. At the same time, the material guiding frame 102 and the inclined material guiding plate 103 are set to be open structures facing the finished product, so that the lifted welded finished product can be cut onto the inclined material guiding plate 103 and enter the material guiding frame 102 along the inclined material guiding plate 103, and finally be guided and output by the roller output member 11 installed at the bottom of the fixed frame 1. While the alternating feeding mechanism 8 is performing pre-loading and feeding, the push block structure of the traction shaft 84 will contact the positioning plate 104 installed inside the material guiding frame 102, and drive the material guiding frame 102 to rise along the socket seat 101 through the inclined plate structures on both sides of the positioning plate 104, thus avoiding blocking the feeding.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made therein without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for machining metal parts, characterized in that: include: A fixed frame (1) is used to fix the structure of the laser welding device for machining metal parts; The working platform (2) is located on the fixed frame (1) and is used to fix the tubular metal component conveying structure; The belt transmission member (3) is located on the working platform (2) and is used to generate a reciprocating conveying force for the tubular metal original at a double station; The limiting slide rail (4) is located on the working platform (2) and is used to limit the linear displacement conveying of the tubular metal original conveying structure; The limiting groove (5) is located on the working platform (2) and is used to guide the conveying of the tubular metal component conveying structure; The trapezoidal top contact frame (6) is located on the working platform (2) and is used for the material discharging and top contact operation when the tubular metal original part is completed and returned after welding; The end feeding mechanism (7) is located on the working platform (2) and is used to feed the sealed welding ends required for the tubular metal original parts; The end feeding mechanism (7) comprises a bucket-shaped box (71), a longitudinal beam (72) and a real-time locking assembly. The bucket-shaped box (71) is a bucket-shaped structure and is fixedly connected to one side of the working platform (2). A circular opening is provided on the bottom side facing the alternating feeding mechanism (8). The longitudinal beam (72) is fixedly connected to a side of the working platform (2) close to the bucket-shaped box (71). A laser welding head (73) is provided on the top of the longitudinal beam (72) and faces the circular opening of the bucket-shaped box (71). A rotating wheel (74) is rotatably connected to the side wall of the circular opening inside the bucket-shaped box (71), and a circumferentially distributed material transfer groove is arranged on the outer ring portion of the rotating wheel (74). An external thread column (75) is fixedly connected to the center portion of the rotating wheel (74) facing the alternating feeding mechanism (8), and a conical structure is arranged at one end of the external thread column (75) away from the rotating wheel (74), and a threaded groove is arranged on the outer surface, and the real-time locking assembly is arranged on a side of the longitudinal beam (72) away from the rotating wheel (74); The alternating feeding mechanism (8) is located on the belt transmission member (3) and cooperates with the external threaded column (75) to transport the tubular metal original parts to be welded; The retracting and lifting mechanism (9) is located on the fixed frame (1), and cooperates with the slide rail structure of the additional clamping frame (87) and the limiting slide frame (813) to lift the welded components; The retracting and lifting mechanism (9) comprises a curved rod (91), wherein the curved rod (91) is provided with a straight portion and an inclined portion, and a slider structure is provided on the straight portion and is slidably connected to the slide rail structure of the limit slide (813) via the slider structure; The material discharging guide mechanism (10) is located on the working platform (2) and cooperates with the top block structure of the traction shaft (84) to receive and output the welded finished product; The roller output member (11) is located on the fixed frame (1) and conveys the finished welding product output by the discharge guide mechanism (10).

2. A laser welding device for machined metal parts according to claim 1, characterized in that: The working platform (2) is fixedly connected to the fixed frame (1), the belt transmission member (3) is arranged on the working platform (2) and crosses the working platform (2), the limiting slide rail (4) is fixedly connected to the working platform (2) on both sides, the limiting groove (5) is arranged on both sides on the working platform (2) and is located on the outside of the limiting slide rail (4), and has a protrusion extending outward in the middle, the trapezoidal top contact frame (6) is fixedly connected to the working platform (2) on both sides and is located on the inside of the limiting slide rail (4), the end feeding mechanism (7) is arranged on one side of the working platform (2), the alternating feeding mechanism (8) is arranged on both sides on the working platform (2) and is displaced by the limiting slide rail (4), the retracting lifting mechanism (9) is correspondingly arranged on the alternating feeding mechanism (8), the discharging guide mechanism (10) is arranged on both sides on the side wall of the working platform (2), and the roller output member (11) is arranged at the bottom of the fixed frame (1).

3. The laser welding device for machining metal parts according to claim 1, characterized in that: The alternating feeding mechanism (8) comprises a linear slide (81) and a docking drive assembly, wherein the linear slide (81) is slidably connected to the limiting slide rail (4), the top of the linear slide (81) is slidably connected to a linear slide (82) in a direction perpendicular to the displacement direction of the linear slide (81), a traction arm (83) is fixedly connected to the inner side of the linear slide (81), one end of the traction arm (83) away from the linear slide (82) is fixedly connected to the belt ends on both sides of the belt transmission member (3), the traction shaft (84) is fixedly connected to one side of the linear slide (82), a pulley structure is provided at the bottom end of the traction shaft (84), and the pulley structure is embedded in the limiting groove (5) to slide, and the push block structure of the traction shaft (84) The linear slide (82) is arranged on the outer surface of the traction shaft (84), and a material placement table (85) is fixedly connected to the side of the linear slide (82) away from the traction shaft (84). The top of the material placement table (85) is slidably connected to arc-shaped centering plates (86) opposite to each other on both sides. The additional clamping frame (87) is fixedly connected to the side of the arc-shaped centering plate (86) away from the end feeding mechanism (7). A second reset spring (88) is connected between the arc-shaped centering plate (86) and the material placement table (85). The bottom of the material placement table (85) is fixedly connected to a limit slide (813), and the limit slide (813) is provided with a plurality of groups of inclined slide rail structures. The docking drive assembly is arranged on the bottom of the material placement table (85) on a side close to the end feeding mechanism (7).

4. The laser welding device for machining metal parts according to claim 1, characterized in that: The end of the inclined portion of the curved rod (91) is fixedly connected to a lifting arc block (95) and extends to below the additional clamping frame (87). The bottom of the curved rod (91) is fixedly connected to a one-way rotating seat (92). A lifting arm (93) is rotatably connected inside the one-way rotating seat (92). A reset spring (94) is provided between the side wall of the lifting arm (93) and the one-way rotating seat (92).

5. The laser welding device for machining metal parts according to claim 1, characterized in that: The material discharging guide mechanism (10) comprises a socket seat (101) and a material guide frame (102), wherein the socket seat (101) is fixedly connected to both sides of the fixed frame (1), and the material guide frame (102) is slidably connected to the inside of the socket seat (101), and an inclined material guide plate (103) is arranged on the top of the material guide frame (102), and the inclined material guide plate (103) extends to the top of the alternating feeding mechanism (8), and the material guide frame (102) and the inclined material guide plate (103) are both open structures on one side facing the end feeding mechanism (7), and a positioning plate (104) is arranged on the inner side wall of the socket seat (101), and both ends of the positioning plate (104) are inclined and bent.

6. The laser welding device for machining metal parts according to claim 1, characterized in that: The real-time locking assembly comprises an inner toothed disc (76) and a linkage turntable (77), wherein the inner toothed disc (76) is fixedly connected to a side of the longitudinal beam (72) away from the rotating wheel (74) and is coaxially arranged with the rotating wheel (74), and the linkage turntable (77) is fixedly connected to the rotating shaft of the rotating wheel (74) and extends to the surface of the inner toothed disc (76), and meshing teeth (78) are slidably connected to the outer circumference of the linkage turntable (77), and the meshing teeth (78) are meshedly connected to the inner tooth keys of the inner toothed disc (76), and a reset spring (79) is embedded between the meshing teeth (78) and the side wall of the linkage turntable (77).

7. The laser welding device for machining metal parts according to claim 3, characterized in that: The docking drive assembly comprises a positioning cylinder (89) and a pushing cylinder (810), wherein the positioning cylinder (89) is fixedly connected to a side of the bottom of the material placement platform (85) facing the external threaded column (75), and the pushing cylinder (810) is slidably connected to an end of the positioning cylinder (89) facing the external threaded column (75), and a spiral clamping strip structure is provided inside the pushing cylinder (810), and an internal toothed ratchet (811) is fixedly connected to a side of the positioning cylinder (89) facing the pushing cylinder (810), and a circumferentially distributed right-angled tooth key is provided on an inner side wall of the internal toothed ratchet (811), and an equidistantly distributed top contact arc strip (812) is fixedly connected to a side of the pushing cylinder (810) facing the positioning cylinder (89), and the top contact arc strip (812) fits on the right-angled tooth key of the internal toothed ratchet (811).

8. The laser welding device for machining metal parts according to claim 4, characterized in that: A right-angle limit portion is provided on one side of the one-way rotating seat (92) facing the end feeding mechanism (7).

9. The laser welding device for machining metal parts according to claim 5, characterized in that: The bottom of the material guiding frame (102) is provided with an inclined transmission structure, which extends to the top of the roller output member (11).

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