Laser welding device for machining metal parts

Abstract

The invention relates to the field of laser welding equipment, and discloses a machining metal part laser welding device which comprises an end conveying mechanism located on a working platform and used for conveying a sealing welding end needed by a tubular metal original part. The alternate feeding mechanism is located on the belt type transmission piece and matched with the external threaded column to be used for conveying the welded tubular metal original pieces. The rollback jacking mechanism is located on the fixed rack, and is matched with the additional clamping frame and the sliding rail structure of the limiting sliding frame to jack up a welded element; and the discharging guide mechanism is located on the operation platform and matched with the ejector block structure of the traction shaft to be used for receiving and outputting welded finished products. The double-station alternate feeding mechanism is matched with the belt type transmission part, the alternate feeding mechanism is matched with the limiting groove channel through the limiting sliding rail, it is guaranteed that route conflicts do not occur when the feeding mechanism works, high-speed and uninterrupted operation of welding operation can be achieved through double-station alternate feeding, and the material changing time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding equipment, in particular to a laser welding device for machined metal parts. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects 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 is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power, and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool.

[0003] In many cases, the existing laser welding process still relies on manual feeding, docking and handling of finished products, resulting in low efficiency and manual errors in the production process. Especially in the end welding process of tubular metal parts, multiple steps such as feeding, docking and transportation require manual participation. In traditional laser welding, the docking accuracy of the end of tubular metal parts is a key factor in welding quality. However, in the prior art, the positioning accuracy and clamping stability are insufficient, which can easily lead to inaccurate docking and excessive deviation during welding, thereby affecting the welding quality and 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 when feeding is performed in a complex process. These problems are particularly prominent and can easily lead to unstable equipment operation. Traditional laser welding equipment often relies on manual handling or manual position adjustment during the processing and discharging of finished products after welding, which not only increases the workload, but also affects production efficiency. Especially in mass production, automatic discharging and processing of finished products are particularly important. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a laser welding device for machined metal parts, which solves the problem that the existing laser welding process still relies on manual labor for feeding, docking and handling of finished products in many cases, resulting in low efficiency and manual errors in the production process.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A laser welding device for machining metal parts, comprising: Fixed frame, used for fixing the structure of laser welding device for machining metal parts; The working platform is located on a fixed frame and is used to fix the tubular metal original conveying structure; The belt transmission part is located on the working platform and is used to form a reciprocating conveying force for the double-station tubular metal original; The limit slide rail is located on the working platform and is used to limit the linear displacement of the tubular metal original conveying structure; The limiting groove is located on the working platform and is used to guide the conveying of the tubular metal original conveying structure; The trapezoidal top contact frame is located on the working platform and is used for the unloading and top-up operation when the tubular metal original parts are welded and returned; The end feeding mechanism is located on the working platform and is used to feed the sealed welding ends required for the tubular metal parts; The alternating feeding mechanism is located on the belt transmission member and cooperates with the external threaded column to convey the tubular metal original parts to be welded; The retracting and lifting mechanism is located on the fixed frame, and cooperates with the additional clamping frame and the slide rail structure of the limit slide to lift the welded components; The material discharging guide mechanism is located on the working platform and cooperates with the top block structure of the traction shaft to receive and output the welded finished products; The roller output part is located on the fixed frame and conveys the finished welding products output by the discharge guide mechanism.

[0006] Preferably, the working platform is fixedly connected to the fixed frame, the belt transmission member is arranged on the working platform and crosses the working platform, the limiting slide rail is relatively fixedly connected to the working platform on both sides, the limiting groove is relatively arranged on the working platform on both sides and is located on the outside of the limiting slide rail, the trapezoidal top contact frame is relatively fixedly connected to the working platform on both sides and is located on the inside of the limiting slide rail, the end feeding mechanism is arranged on one side of the working platform, the alternating feeding mechanism is relatively arranged on the working platform on both sides and is displaced by the limiting slide rail, the retracting and lifting mechanism is correspondingly arranged on the alternating feeding mechanism, the discharging guide mechanism is relatively arranged on the side wall of the working platform on both sides, and the roller output member is arranged at the bottom of the fixed frame.

[0007] Preferably, the end feeding mechanism includes a bucket box, a longitudinal beam and a real-time locking assembly, the bucket box is a bucket-shaped structure and is fixedly connected to one side of the working platform, and a circular opening is provided on the bottom side facing the alternating feeding mechanism, the longitudinal beam is fixedly connected to the side of the working platform close to the bucket box, a laser welding head is provided on the top of the longitudinal beam, and faces the circular opening position of the bucket box, a transfer wheel is rotatably connected to the side wall of the circular opening inside the bucket box, the outer ring part of the transfer wheel is provided with circumferentially distributed material transfer grooves, the center part of the transfer wheel facing the alternating feeding mechanism is fixedly connected with an external threaded column, the end of the external threaded column away from the transfer wheel is provided with a conical structure, and a threaded groove is provided on the outer surface, and the real-time locking assembly is arranged on the side of the longitudinal beam away from the transfer wheel.

[0008] Preferably, the alternating feeding mechanism includes a linear slide and a docking drive assembly, the linear slide is slidably connected to the limiting slide rail, the top of the linear slide is slidably connected to a linear slide perpendicular to the displacement direction of the linear slide, a traction arm is fixedly connected to the inner side of the linear slide, one end of the traction arm away from the linear slide is fixedly connected to the belt ends on both sides of the belt transmission member, the traction shaft is fixedly connected to one side of the linear slide, a pulley structure is provided at the bottom end of the traction shaft, and is embedded in and slides to the inside of the limiting groove, and the traction shaft The pushing block structure is arranged on the outer surface of the traction shaft, and the linear slide is fixedly connected with a loading platform on the side away from the traction shaft, and the top of the loading platform is slidably connected with arc-shaped centering plates opposite to each other on both sides, and the additional clamping frame is fixedly connected to the side of the arc-shaped centering plate away from the end feeding mechanism, and a reset spring is connected between the arc-shaped centering plate and the loading platform. The bottom of the loading platform is fixedly connected with a limiting slide, and the limiting slide is provided with multiple groups of inclined slide rail structures, and the docking drive assembly is arranged on the side of the bottom of the loading platform close to the end feeding mechanism.

[0009] Preferably, the retractable lifting mechanism includes a curved rod, which 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 limiting slide through the slider structure, and the end of the inclined portion of the curved rod is fixedly connected with a lifting arc block and extends to the bottom of the additional clamping frame, and the bottom of the curved rod is fixedly connected with a one-way rotating seat, and a lifting arm is rotatably connected inside the one-way rotating seat, and a reset spring three is provided between the side wall of the lifting arm and the one-way rotating seat.

[0010] Preferably, the material discharging guiding mechanism includes a socket and a material guide frame, the socket is fixedly connected to both sides of the fixed frame, the material guide frame is slidably connected to the inside of the socket, an inclined material guide plate is provided on the top of the material guide frame, the inclined material guide plate extends to the top of the alternating feeding mechanism, the material guide frame and the inclined material guide plate are both open structures on one side facing the end feeding mechanism, a positioning plate is provided on the inner side wall of the socket, and both ends of the positioning plate are inclined and bent.

[0011] Preferably, the real-time locking assembly includes an inner toothed disk and a linkage turntable, the inner toothed disk is fixedly connected to a side of the longitudinal beam away from the turning wheel and is coaxially arranged with the turning wheel, the linkage turntable is fixedly connected to the rotating shaft of the turning wheel and extends to the surface of the inner toothed disk, and the sliding connection of the linkage turntable with meshing teeth distributed circumferentially on the outer side is meshingly connected to the inner tooth key of the inner toothed disk, and a reset spring is embedded between the meshing teeth and the side wall of the linkage turntable.

[0012] Preferably, the docking drive assembly includes a positioning cylinder and a pushing cylinder, the positioning cylinder is fixedly connected to the side of the bottom of the loading platform facing the external threaded column, the pushing cylinder is slidably connected to the end of the positioning cylinder facing the external threaded column, a spiral clamping strip structure is arranged inside the pushing cylinder, an internal tooth ratchet is fixedly connected to the side of the positioning cylinder facing the pushing cylinder, a circumferentially distributed right-angle tooth keys are arranged on the inner side wall of the internal tooth ratchet, and an equidistantly distributed top contact arc strip is fixedly connected to the side of the pushing cylinder facing the positioning cylinder, and the top contact arc strip fits on the right-angle tooth key of the internal tooth ratchet.

[0013] Preferably, a right-angle limit portion is provided on one side of the one-way rotating seat facing the end feeding mechanism.

[0014] Preferably, an inclined transmission structure is provided at the bottom of the feed frame and extends to above the roller output member.

[0015] The present invention provides a laser welding device for machined metal parts, which has the following beneficial effects: 1. The present invention has a design of a double-station alternating feeding structure: the equipment realizes efficient feeding during the welding process through the cooperation of the double-station alternating feeding mechanism and the belt transmission member. The two sets 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 the impact of welding efficiency on the conflict between the feeding mechanism and the working area. The alternating feeding mechanism ensures that there will be no route conflict when the feeding mechanism is working through the cooperation of the limiting slide rail and the limiting groove. The double-station alternating feeding can realize high-speed and uninterrupted operation of the welding operation, reducing the material changing time. The design of the limiting groove and the protrusion avoids interference when the feeding mechanism approaches each other, ensuring stable operation.

[0016] 2. Precise docking of the end feeding mechanism of the present invention: The end feeding mechanism accurately delivers the tubular original end to be welded to the welding position through the cooperation of the bucket box and the rotating wheel. The external thread column structure of the rotating wheel and the design of the linkage turntable enable the end to be accurately introduced into the welding position, and the laser welding head is used to weld with the tubular original end. The end feeding mechanism uses a precise docking structure to ensure the accuracy of each welding process. The design of the rotating wheel ensures the automatic docking of the tubular original and the end without manual intervention.

[0017] 3. The cooperative operation of the retracting and lifting mechanism and the discharging guide mechanism of the present invention: The retracting and lifting mechanism and the discharging guide mechanism realize the automatic lifting and discharging of the finished product through precise cooperation. After welding is completed, the retracting and lifting mechanism uses the inclined slide rail structure to automatically lift the finished welding product, avoiding manual intervention. At the same time, the discharging guide mechanism works synchronously to ensure that the finished product can be smoothly delivered to the output position. The cooperation between the retracting and lifting mechanism and the discharging guide mechanism enables the finished welding product to be automatically lifted and smoothly output, which greatly reduces manual participation and operation errors. The lifting and discharging processes are carried out synchronously, ensuring the high efficiency of the production line.

[0018] 4. The present invention has the design of automatic retraction and locking mechanism: The design of automatic retraction lifting mechanism and locking mechanism enables the finished product to be smoothly retracted to the designated position and processed after welding is completed. The locking structure of the push cylinder and the control of the rotating seat ensure the smooth and error-free retraction process. The locking mechanism and retraction device ensure the smooth retraction of the finished product, avoiding manual intervention. The real-time locking structure effectively prevents accidental operation or misoperation of the equipment.

[0019] 5. The multiple synchronous collaborations of the present invention improve production efficiency: various mechanisms in the entire equipment, such as alternating feeding, end feeding, retracting and lifting, and discharging guidance, can cooperate synchronously to ensure the automation and efficiency of the entire welding process. The simultaneous execution of multiple processes enables the equipment to operate efficiently without manual intervention, reducing manual operation time. The improvement in the degree of automation greatly improves the overall production efficiency, which is especially suitable for high-frequency production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional schematic diagram of the laser welding device for machining metal parts of the present invention Figure 1 ; Figure 2 A three-dimensional schematic diagram of the laser welding device for machining metal parts of the present invention Figure 2 ; Figure 3 A three-dimensional schematic diagram of the laser welding device for machining metal parts of the present invention Figure 3 ; Figure 4 A three-dimensional schematic diagram of the laser welding device for machining metal parts of the present invention Figure 4 ; Figure 5 It is a schematic diagram of the internal structure of the laser welding device for machining metal parts of the present invention; Figure 6 The end feeding mechanism structure of the present invention is schematically shown in FIG. Figure 1 ; Figure 7 The end feeding mechanism structure of the present invention is schematically shown in FIG. Figure 2 ; Figure 8 It is a schematic diagram of the internal structure of the end feeding mechanism of the present invention; Fig. 9 It is a schematic diagram of the surface structure of the working platform of the present invention; Fig.10 The structure of the alternating feeding mechanism of the present invention is schematically shown in FIG. Figure 1 ; Fig.11 The structure of the alternating feeding mechanism of the present invention is schematically shown in FIG. Figure 2 ; Fig.12 The structure of the alternating feeding mechanism of the present invention is schematically shown in FIG. Figure 3 ; Fig.13 It is a schematic diagram of the structure of the docking drive assembly of the present invention; Fig.14 It is a schematic diagram of the structure of the retreat and lifting mechanism of the present invention.

[0021] Among them, 1. fixed frame; 2. working platform; 3. belt transmission part; 4. limit slide rail; 5. limit groove; 6. trapezoidal top contact frame; 7. end feeding mechanism; 8. alternating feeding mechanism; 9. retracting lifting mechanism; 10. material discharging guide mechanism; 11. roller output part; 71. bucket box; 72. longitudinal beam; 73. laser welding head; 74. material transfer wheel; 75. external thread column; 76. internal gear disc; 77. linkage turntable; 78. meshing teeth; 79. reset spring 1; 81. linear slide; 8 2. Linear slide; 83. Pulling arm; 84. Pulling shaft; 85. Loading table; 86. Arc centering plate; 87. Additional clamping frame; 88. Reset spring 2; 89. Positioning cylinder; 810. Pushing cylinder; 811. Internal tooth ratchet; 812. Top contact arc strip; 813. Limiting slide; 91. Curved rod; 92. One-way rotating seat; 93. Lifting arm; 94. Reset spring 3; 95. Lifting arc block; 101. Socket seat; 102. Feeding frame; 103. Inclined feeding plate; 104. Positioning plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please see attached Figure 1 -Attached Figure 3The embodiment of the present invention provides a laser welding device for machining metal parts, comprising: a fixed frame 1, used for fixing the structure of the laser welding device for machining metal parts; a working platform 2 located on the fixed frame 1, used for fixing the conveying structure of the tubular metal original; a belt transmission member 3 located on the working platform 2, used for forming a reciprocating conveying force of the tubular metal original double station; a limiting slide rail 4 located on the working platform 2, used for limiting the linear displacement conveying of the tubular metal original conveying structure; a limiting groove 5 located on the working platform 2, used for guiding the conveying of the tubular metal original conveying structure; a trapezoidal top contact frame 6 located on the working platform 2, used for the unloading and top material operation when the tubular metal original completes welding and retreats; a roller output member 11 located on the fixed frame 1, used for conveying and discharging guide mechanism The welding finished product output by the mechanism 10, 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 the working platform 2 on both sides and is located on the outside of the limiting slide rail 4, 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 the working platform 2 on both sides and is displaced by the limiting slide rail 4, the retracting jacking mechanism 9 is correspondingly arranged on the alternating feeding mechanism 8, the discharge guide mechanism 10 is arranged on the side wall of the working platform 2 on both sides, and the roller output member 11 is arranged on the fixed frame 10. The bottom of the fixed frame 1, first of all, the laser welding equipment is mainly used for the end welding operation of tubular metal parts. The overall equipment is installed on the fixed frame 1, and the working platform 2 fixed on the fixed frame 1 is used as the main welding work surface. The overall welding operation is located on the working platform 2, and the belt transmission member 3 used to drive the alternating feeding mechanism 8 to perform double-station cyclic feeding is installed on the working platform 2, and the limiting slide rails 4 that limit the movement of the double-station are distributed and installed on the working platform 2 on both sides, respectively limiting the linear displacement of one group of feeding structures. In order to avoid route conflicts when the double-station structures approach each other, the limiting grooves 5 relatively distributed on the working platform 2 and the protruding structure of the limiting grooves 5 are also used to drive the two groups of alternating feeding mechanisms 8 to move outward when they approach each other. The two sets of alternating feeding mechanisms 8 are driven by the belt transmission member 3, one set of which feeds while the other set of which retreats to load. When the alternating feeding mechanism 8 reaches the end feeding mechanism 7 installed on one side of the working platform 2 along the limiting slide rail 4, the end feeding mechanism 7 will be synchronously driven to release the end to be welded, and automatically weld with the tubular original delivered by the alternating feeding mechanism 8, and then the alternating feeding mechanism 8 driven by the belt transmission member 3 to complete the welding is retreated, and the corresponding retreat jacking mechanism 9 contacts the trapezoidal top contact frame 6 which is also relatively installed on the working platform 2, driving the retreat jacking mechanism 9 to push the welded finished product to rise, and then enter into the discharge guiding mechanism 10, and the discharge guiding mechanism 10 completes the final guided discharge.At the same time, another set of alternate feeding mechanisms 8 for retracting and loading materials moves in the opposite direction to the end feeding mechanism 7 to start a new round of welding processing.

[0024] Please see attached Figure 1 -Attached Figure 8 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 includes a bucket box 71, a longitudinal beam 72 and a real-time locking assembly. The bucket box 71 is a bucket-shaped structure and is fixedly connected to one side of the working platform 2. At the same time, a circular opening is arranged on the bottom side facing the alternating feeding mechanism 8. The longitudinal beam 72 is fixedly connected to the side of the working platform 2 close to the bucket box 71. A laser welding head 73 is arranged on the top of the longitudinal beam 72 and faces the circular opening position of the bucket box 71. A material transfer wheel 74 is rotatably connected to the side wall of the circular opening inside the bucket box 71. The outer ring of the material transfer wheel 74 is provided with circumferentially distributed material transfer grooves. The central part of the rotating wheel 74 facing the alternating feeding mechanism 8 is fixedly connected with an external threaded column 75, and the end of the external threaded column 75 away from the rotating wheel 74 is provided with a tapered structure, and a threaded groove is provided on the outer surface. The real-time locking assembly is arranged on the side of the longitudinal beam 72 away from the rotating wheel 74. The real-time locking assembly includes an internal toothed disk 76 and a linkage turntable 77. The internal toothed disk 76 is fixedly connected to the side of the longitudinal beam 72 away from the rotating wheel 74 and is coaxially arranged with the rotating wheel 74. The linkage turntable 77 is fixedly connected to the rotating shaft of the rotating wheel 74 and extends to the surface of the internal toothed disk 76. The sliding connection of the outer circumference of the linkage turntable 77 is provided with meshing teeth 78, and the meshing teeth 78 mesh with each other. A reset spring 79 is embedded between the meshing teeth 78 and the side wall of the linkage turntable 77, which is connected to the inner tooth key of the inner toothed disk 76. First, the bucket box 71 included in the end feeding mechanism 7 is a bucket-shaped structure, which is used to input the ends required for welding of tubular originals, and is installed and fixed on one side of the working platform 2. The ends will gather along the bucket box 71 to the bottom of the bucket box 71, and an open circular opening is provided at the bottom of the bucket box 71, and a transfer wheel 74 is installed at the circular opening position at the same time. The transfer trough provided on the outside of the transfer wheel 74 can be embedded in the ends gathered at the bottom of the bucket box 71 at the same time, and the transfer wheel 74 is provided with an external thread of a conical head structure on the center of the circle of the transfer wheel 74 in the direction of the alternating feeding mechanism 8. The inner toothed disc 76 included in the real-time locking assembly is fixed on the longitudinal beam 72 to keep it stationary, and the linkage turntable 77 is installed on the rotating shaft of the rotation wheel 74 and rotates with the rotation wheel 74. At the same time, the meshing teeth 78 distributed on the outer side of the linkage turntable 77 generate a lifting force through the reset spring 79 installed between the linkage turntable 77 and the linkage turntable 77, so that the linkage turntable 77 can be engaged in the inner tooth keyway of the inner toothed disc 76 in real time after rotating with the rotation wheel 74, so that the rotation wheel 74 itself can be stationary in real time without external force driving, and cannot rotate due to its own gravity.

[0025] Please see attached Figure 1 -Attached Fig.13The 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 for welding. The alternating feeding mechanism 8 includes a linear slide 81 and a docking drive assembly. 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 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. The 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 is embedded in the interior of the limiting groove 5. The push block structure of the traction shaft 84 is provided on the outer surface of the traction shaft 84. The linear slide 82 is away from A loading platform 85 is fixedly connected to one side of the traction shaft 84, and arc-shaped centering plates 86 opposite to each other on both sides are slidably connected to the top of the loading platform 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 reset spring 88 is connected between the arc-shaped centering plate 86 and the loading platform 85. A limited slide 813 is fixedly connected to the bottom of the loading platform 85. The limited slide 813 is provided with a plurality of groups of inclined slide rail structures. The docking drive assembly is arranged on the side of the bottom of the loading platform 85 close to 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 side of the bottom of the loading platform 85 facing the external threaded column 75, and the pushing cylinder 810 is slidably connected to the side of the positioning cylinder 89 facing the external threaded column 75. At the end, a spiral clamping strip structure is arranged inside the pushing cylinder 810, an inner-toothed ratchet 811 is fixedly connected to the side of the positioning cylinder 89 facing the pushing cylinder 810, and a circumferentially distributed right-angled tooth key is arranged on the inner side wall of the inner-toothed ratchet 811, and an equidistantly distributed top-contact arc strip 812 is fixedly connected to the 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 inner-toothed ratchet 811, and the alternating feeding mechanism 8 consists of two groups, and the linear slides 81 included therein are respectively slidably mounted on the limiting slide rails 4, which themselves are connected to the belt ends of the belt transmission members 3 through the traction arms 83, and the traction arms 83 installed on the two groups of linear slides 81 are respectively connected to the two sides of the belt ends of the belt transmission members 3, so that when the belt transmission members 3 are running, the two groups of linear slides 81 move along the corresponding The limiting slide rail 4 moves in opposite directions, and a linear slide 82 perpendicular to its own displacement direction is installed on the top of the linear slide 81, and the traction shaft 84 fixed on the side wall of the linear slide 82 is embedded in the corresponding limiting groove 5 by using its own pulley structure, so that when the two groups of linear slides 82 move relative to each other and approach each other, the pulley structure of the traction shaft 84 will enter the protrusion of the limiting groove 5 to drive the linear slides 82 on both sides to slide outward at the same time to avoid route conflicts when approaching each other, and the loading platform 85 installed on the inner side of the linear slide 82 and the arc-shaped centering plates 86 distributed on both sides of the loading platform 85 are used to load and clamp the tubular original parts to be welded, and the arc-shaped centering plates 86 on both sides form a reverse extrusion force through the reset springs 88 installed between the loading platform 85.The arc-shaped centering plate 86 is driven to clamp the loaded tubular original part, and the end of the tubular part is embedded in the additional clamping frame 87 installed at the rear end of the arc-shaped centering plate 86, and the additional clamping frame 87 pushes the tubular original part to follow the displacement and move closer to the end feeding mechanism 7, and the docking drive assembly installed at the bottom of the material placement table 85 will follow the material placement table 85 to move closer to the external threaded column 75 included in the end feeding mechanism 7, and the positioning cylinder 89 included in the docking drive assembly is fixed at the bottom of the material placement table 85, and the positioning The cylinder 89 is provided with a rotatable push cylinder 810 in the direction of the external thread column 75. The spiral push strip structure provided inside the positioning cylinder 89 can be connected with the spiral groove provided on the outer surface of the external thread column 75, and the top contact arc strip 812 provided outside the push cylinder 810 is attached to the inner wall of the internal tooth ratchet 811 provided on the positioning cylinder 89, and is wedged with the right-angle tooth key inside the internal tooth ratchet 811. The top contact arc strip 812 will abut against the right-angle groove of the internal tooth ratchet 811, so that the push cylinder 810 can only be moved along one side. When the push cylinder 810 follows the placement platform 85 to move to the external thread column 75, the external thread column 75 will be embedded into the push cylinder 810 along the cone structure, and the spiral push strip of the push cylinder 810 will be embedded into the external spiral groove of the external thread column 75. As the placement platform 85 continues to move, the reverse-locked push cylinder 810 uses the spiral structure feature to drive the external thread column 75 and the transfer wheel 74 to rotate, so that the transfer groove of the transfer wheel 74 rotates the new end to the highest position until it is aligned with the material transfer wheel 74. The tubular original parts inputted by the loading table 85 are automatically docked, and then the end and the tubular original parts are laser welded by the laser welding head 73 included in the end feeding mechanism 7. After the welding is completed, the belt transmission part 3 drives the finished welded product to follow the corresponding clamping alternating feeding mechanism 8 to retreat. At this time, the push cylinder 810 moves back along the external thread column 75, and at the same time, the push cylinder 810 releases the one-way lock and rotates, so as to drive the alternating feeding mechanism 8 to retreat, and the end feeding mechanism 7 will stop the end feeding accordingly.

[0026] Please see attached Figure 1 -Attached Fig.14The 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 813 to lift the welded components. The retracting and lifting mechanism 9 includes a curved rod 91, and 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 limiting slide 813 through the slider structure. The end of the inclined portion of the curved rod 91 is fixedly connected with a lifting arc block 95 and extends to the bottom of the additional clamping frame 87. The bottom of the curved rod 91 is fixedly connected with a one-way rotating seat 92, and the one-way rotating seat 92 is rotatably connected with a lifting arm 9 3. A return spring 94 is arranged between the side wall of the lifting arm 93 and the one-way rotating seat 92. A right-angle limit portion is arranged on the side of the one-way rotating seat 92 facing the end feeding mechanism 7. As the finished welding product is formed and follows the retreat of the alternating feeding mechanism 8, the retreat lifting mechanism 9 installed by the limit slide 813 will contact the trapezoidal top contact frame 6. The limit slide 813 is provided with an inclined slide rail structure, and the curved rod 91 included in the retreat lifting mechanism 9 uses its own slider structure to slide on the inclined slide rail structure of the limit slide 813, and the inclined portion of the curved rod 91 extends to the bottom of the additional clamping frame 87 At the same time, a lifting arc block 95 that can touch the finished welding product is installed. A rotatable lifting arm 93 is installed at the bottom of the curved rod 91 through a one-way rotating seat 92, and a closed structure is opened on the side of the one-way rotating seat 92 facing the end feeding mechanism 7. When the lifting arm 93 moves and contacts the trapezoidal top contact frame 6, the lifting arm 93 simultaneously touches the closed structure and pushes the curved rod 91 to move along the inclined slide rail structure of the limiting slide 813. The inclined part of the curved rod 91 tilts and rises, and synchronously drives the lifting arc block 95 to lift the finished welding product, so that one end of it rises and separates from the arc-shaped centering plate 86, which is convenient for operation. The discharge guiding mechanism 10 installed on the table 2 is used for collection and output, and when the corresponding alternating feeding mechanism 8 is loading and feeding, the lifting arm 93 will be touched and rotated and folded by the trapezoidal top contact frame 6 after contacting the trapezoidal top contact frame 6, so that when feeding, the retracting lifting mechanism 9 is in a closed state until the lifting arm 93 is separated from the trapezoidal top contact frame 6, and the reset spring 3 94 is installed on itself and the one-way rotating seat 92 to drive the lifting arm 93 to rotate again and touch the closed structure of the one-way rotating seat 92, preparing for the retracting of the welding finished product, so that the equipment can simultaneously perform double-station feeding and automatic discharging when it is running.

[0027] Please see attached Figure 1 -Attached Fig. 9The 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 material discharging guide mechanism 10 includes a socket seat 101 and a guide frame 102. The socket seat 101 is fixedly connected to both sides of the fixed frame 1, and the guide frame 102 is slidably connected to the inside of the socket seat 101. An inclined guide plate 103 is provided on the top of the guide frame 102, and the inclined guide plate 103 extends to the top of the alternating feeding mechanism 8. The guide frame 102 and the inclined guide plate 103 are both open structures on one side facing the end feeding mechanism 7. A positioning plate 104 is provided on the inner side wall of the socket seat 101. The positioning plate 104 Both ends are inclined and bent, and an inclined transmission structure is arranged at the bottom of the feed frame 102, which extends to the top of the roller output member 11. When the finished product is lifted by the retracting lifting mechanism 9, the discharge guide mechanism 10 is opened synchronously, and the socket 101 included in the discharge guide mechanism 10 is installed on both sides of the working platform 2, and a feed frame 102 that can be moved up and down is installed inside it, and an inclined feed plate 103 arranged on the top of the feed frame 102 extends to the material placement table 85. At the same time, the feed frame 102 and the inclined feed plate 103 are arranged in an open structure toward the direction of the finished product, so that the lifted welding product can be cut into the inclined feed plate 103. At the same time, it enters the feed frame 102 along the inclined feed plate 103, and is finally guided by the feed frame 102 to the roller output member 11 installed at the bottom of the fixed frame 1 for guided output. While the alternating feeding mechanism 8 is performing the preliminary loading and feeding, the pushing block structure of the traction shaft 84 will contact the positioning plate 104 installed on the inner side of the feed frame 102, and through the inclined plate structure on both sides of the positioning plate 104, the feed frame 102 is driven to rise along the socket 101, thereby avoiding blocking the feeding.

[0028] Working principle: First of all, the laser welding equipment is mainly used for the end welding of tubular metal parts. The whole equipment is installed on a fixed frame 1, and the working platform 2 fixed on the fixed frame 1 is used as the main welding work surface. The whole welding operation is located on the working platform 2, and the belt transmission part 3 used to drive the alternating feeding mechanism 8 to perform double-station cyclic feeding is installed on the working platform 2. The limiting slide rails 4 that limit the movement of the double-station are distributed on both sides and installed on the working platform 2 to limit the linear displacement of one group of feeding structures respectively. In order to avoid route conflicts when the double-station structures approach each other, the limiting grooves 5 relatively distributed on the working platform 2 and the protruding structure of the limiting grooves 5 are also used to drive the two groups of alternating feeding mechanisms 8 to move closer to each other. The two sets of alternating feeding mechanisms 8 are driven by the belt transmission member 3, one set of which feeds while the other set of which retreats to load. When the alternating feeding mechanism 8 reaches the end feeding mechanism 7 installed on one side of the working platform 2 along the limit slide rail 4, the end feeding mechanism 7 will be synchronously driven to release the end to be welded, and automatically weld with the tubular original delivered by the alternating feeding mechanism 8, and then the belt transmission member 3 will be used to drive the alternating feeding mechanism 8 to retreat after the welding is completed, and the corresponding retreat jacking mechanism 9 will contact with the trapezoidal top contact frame 6 which is also relatively installed on the working platform 2, driving the retreat jacking mechanism 9 to push the welded finished product to rise, and then enter into the discharge guiding mechanism 10, and the discharge guiding mechanism 10 will complete the welding. Finally, the material is guided out, and at the same time, another set of alternating feeding mechanisms 8 for returning the material to be loaded is reversely displaced to the end feeding mechanism 7 to start a new round of welding processing. First, the bucket box 71 contained in the end feeding mechanism 7 is itself a bucket-shaped structure, which is used to input the ends required for welding of the tubular original parts, and is installed and fixed on one side of the working platform 2. The ends will gather along the bucket box 71 to the bottom of the bucket box 71, and an open circular opening is provided at the bottom of the bucket box 71, and a rotating wheel 74 is installed at the circular opening position at the same time, and the material transfer trough provided on the outside of the rotating wheel 74 can be embedded in the ends gathered at the bottom of the bucket box 71 at the same time, and an external threaded column 75 with a conical head structure is installed on the center of the circle of the rotating wheel 74 facing the alternating feeding mechanism 8, and the center of the circle on the rear side of the rotating wheel 74 is framed A real-time locking assembly for real-time locking rotation is provided, and the inner toothed disc 76 included in the real-time locking assembly is fixed on the longitudinal beam 72 to keep it stationary, and 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 outer side of the linkage turntable 77 generate a lifting force through the reset clamp spring 79 installed between the linkage turntable 77, so that the linkage turntable 77 can be engaged in the inner tooth keyway of the inner toothed disc 76 in real time after rotating with the transfer wheel 74, so that the transfer wheel 74 itself can be stationary in real time without external force driving, and cannot rotate due to its own gravity. At the same time, the alternating feeding mechanism 8 is composed of two groups, and the linear slides 81 included therein are respectively slidably installed on the limiting slide rails 4,It itself is connected to the belt end of the belt transmission member 3 through a traction arm 83, and the traction arms 83 installed on the two sets of linear slides 81 are respectively connected to the two sides of the belt end of the belt transmission member 3, so that when the belt transmission member 3 is running, the two sets of linear slides 81 move in opposite directions along the corresponding limit slide rails 4, and a linear slide 82 perpendicular to its own displacement direction is installed on the top of the linear slide 81, and the traction shaft 84 fixed on the side wall of the linear slide 82 is embedded in the corresponding limit groove 5 using its own pulley structure, so that when the two sets of linear slides 82 move relative to each other and approach each other, the pulley structure of the traction shaft 84 will enter the protrusion of the limit groove 5 to drive the linear slides 82 on both sides to slide outward at the same time, avoiding route conflicts when approaching each other, and the linear slides 82 The loading platform 85 installed on the inner side and the arc-shaped centering plates 86 distributed on both sides of the loading platform 85 are used to load and clamp the tubular original parts to be welded, and the arc-shaped centering plates 86 on both sides form a reverse extrusion force through the reset springs 88 installed between the loading platform 85, driving the arc-shaped centering plates 86 to clamp the loaded tubular original parts, and the ends of the tubular parts are embedded in the additional clamping frames 87 installed on the rear end of the arc-shaped centering plates 86, and the additional clamping frames 87 push the tubular original parts to follow the displacement and move closer to the end feeding mechanism 7, and the docking drive assembly installed at the bottom of the loading platform 85 will follow the loading platform 85 to move closer to the external threaded column 75 included in the end feeding mechanism 7, and the positioning cylinder 89 included in the docking drive assembly is fixed at the bottom of the loading platform 85, and the positioning cylinder 8 A rotatable push cylinder 810 is installed in the direction of the external threaded column 75. The spiral push strip structure arranged inside the positioning cylinder 89 can be connected with the spiral groove arranged on the outer surface of the external threaded column 75, and the top contact arc strip 812 installed on the outside of the push cylinder 810 fits the inner wall of the internal tooth ratchet 811 installed on the positioning cylinder 89 and is wedged with the right-angle tooth key inside the internal tooth ratchet 811. The top contact arc strip 812 will contact the right-angle groove of the internal tooth ratchet 811, so that the push cylinder 810 can only rotate along one side. When the push cylinder 810 follows the placement table 85 to move to the external threaded column 75, the external threaded column 75 will be embedded in the push cylinder 810 along the cone head structure, and at the same time, the spiral push strip of the push cylinder 810 is embedded in the outer spiral groove of the external threaded column 75. With the continuous displacement of the material placement table 85, the reverse locked push cylinder 810 utilizes the spiral structure characteristics to drive the external thread column 75 and the rotating wheel 74 to rotate, so that the material transfer groove of the rotating wheel 74 rotates and displaces the new end to the highest point until it automatically docks with the tubular original part input by the material placement table 85, and then uses the laser welding head 73 included in the end feeding mechanism 7 to laser weld the end and the tubular original part. After the welding is completed, the belt transmission part 3 drives the finished product to follow the corresponding clamping alternating feeding mechanism 8 to retreat. 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, thereby driving the alternating feeding mechanism 8 to retreat. The end feeding mechanism 7 will stop the end feeding accordingly. As the welded product is formed,When the alternating feeding mechanism 8 retreats, the retreat lifting mechanism 9 installed by the limit slide 813 will contact the trapezoidal top contact frame 6. The limit slide 813 is provided with an inclined slide rail structure, and the curved rod 91 included in the retreat lifting mechanism 9 uses its own slider structure to slide on the inclined slide rail structure of the limit slide 813, and the inclined portion of the curved rod 91 extends to the bottom of the additional clamping frame 87. At the same time, a lifting arc block 95 that can touch the finished welding product is installed, and the bottom of the curved rod 91 is installed through a one-way rotating seat 92. The rotatable lifting arm 93 and the one-way rotating seat 92 are provided with a closed structure on one side facing the end feeding mechanism 7. When the lifting arm 93 is displaced and contacts the trapezoidal top contact frame 6, the lifting arm 93 simultaneously contacts the closed structure and pushes the curved rod 91 to move along the inclined slide rail structure of the limit slide 813. The inclined portion of the curved rod 91 tilts upward and synchronously drives the lifting arc block 95 to lift the finished welding product, so that one end of the product rises and detaches from the arc-shaped centering plate 86, which is convenient for the discharge guide mechanism 10 installed on the working platform 2 to collect the finished welding product. Output, and when the corresponding alternating feeding mechanism 8 is loading and feeding, the lifting arm 93 will be touched by the trapezoidal top contact frame 6 and rotated and folded, so that when feeding, the retracting lifting mechanism 9 is in a closed state, until the lifting arm 93 is separated from the trapezoidal top contact frame 6, and the reset spring 3 94 is installed between itself and the one-way rotating seat 92 to drive the lifting arm 93 to rotate again and touch the closed structure of the one-way rotating seat 92, so as to prepare for the retracting of the welding finished product, so that the equipment can perform double-station feeding synchronously when it is running. And automatic discharging, while the finished product is lifted by the retracting lifting mechanism 9, the discharging guide mechanism 10 is opened synchronously, the socket 101 included in the discharging guide mechanism 10 is installed on both sides of the working platform 2, and a guide frame 102 that can move up and down is installed inside it, and the inclined guide plate 103 set on the top of the guide frame 102 extends to the material placement table 85, and the guide frame 102 and the inclined guide plate 103 are set to an open structure toward the direction of the finished product, so that the lifted welding product can be cut into the inclined guide plate 103 At the same time, the material guide frame 102 is entered along the inclined guide plate 103, and finally guided by the guide frame 102 to the roller output member 11 installed at the bottom of the fixed frame 1 for output. While the alternating feeding mechanism 8 is performing the preliminary loading and feeding, the push block structure of the traction shaft 84 will contact the positioning plate 104 installed inside the guide frame 102, and the inclined plate structure on both sides of the positioning plate 104 will drive the guide frame 102 to rise along the socket seat 101, thereby avoiding blocking the feeding.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 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 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 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 transfer wheel (74) is rotatably connected to the side wall of the circular opening inside the bucket-shaped box (71); the outer ring of the transfer wheel (74) is provided with circumferentially distributed material transfer grooves; the center portion of the transfer wheel (74) facing the alternating feeding mechanism (8) is fixedly connected with an external threaded column (75); the end of the external threaded column (75) away from the transfer wheel (74) is provided with a conical structure, and a threaded groove is provided on the outer surface; the real-time locking assembly is arranged on the side of the longitudinal beam (72) away from the transfer wheel (74).

4. 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).

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

6. 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.

7. The laser welding device for machining metal parts according to claim 3, 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).

8. The laser welding device for machining metal parts according to claim 4, 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).

9. The laser welding device for machining metal parts according to claim 5, 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).

10. The laser welding device for machining metal parts according to claim 6, 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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