Welding device facilitating part positioning

Abstract

The utility model discloses a welding device convenient for part positioning, which relates to the technical field of laser welding and specifically comprises a cabinet body, one side of the cabinet body is open, the cabinet body is fixed on a base, and a first linear driving module perpendicular to the base is arranged on one side, close to the opening, in the cabinet body. A rotating adjusting motor is mounted on the first linear driving module, an L-shaped mounting plate is mounted at the other end of the rotating adjusting motor, a first telescopic mechanism is mounted at the top of the other end of the mounting plate, the first telescopic mechanism is connected with a moving seat arranged below the mounting plate, and a laser welding head is mounted on the bottom surface of the moving seat; a chuck is arranged at the top of the base, and a power mechanism capable of driving the chuck to rotate is arranged at the bottom of the base. Inert gas can be jetted to the welding part of the workpiece through the first jet head and the second jet head, air is isolated while the welding part is cooled, the welding part is prevented from being oxidized by oxygen in the air, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a welding device which is convenient for positioning 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. The welding process is a heat conduction type, that is, the laser radiation heats the workpiece surface, and the surface heat diffuses to the inside 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. After the molten pool cools down, the workpieces can be welded together.

[0003] The existing laser welding is to install a nozzle on the welding head to spray inert gas to the welding part. Since the inert gas is only sprayed to the laser irradiated part, when the workpiece is circumferentially welded, other parts of the weld will still be in contact with oxygen in the air, oxidized, and the welding quality is poor. Therefore, we propose a welding device that is convenient for positioning parts. Utility Model Content

[0004] In view of the disadvantage of existing laser welding that the welding part will be oxidized by oxygen in the air during welding, the utility model provides a welding device which is convenient for positioning parts and has the advantage of isolating the welding part from the air by inert gas to prevent oxidation of the welding part, thus solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a welding device that is convenient for positioning parts, including a cabinet, one side of the cabinet is open, the cabinet is fixed on a base, a first linear drive module perpendicular to the base is installed on one side of the cabinet close to the opening, a rotation adjustment motor is installed on the first linear drive module, an L-shaped mounting plate is installed on the other end of the rotation adjustment motor, and a first telescopic mechanism is installed on the top of the other end of the mounting plate, the first telescopic mechanism is connected to a moving seat arranged below the mounting plate, and a laser welding head is installed on the bottom surface of the moving seat;

[0006] A chuck is provided on the top of the base, a power mechanism capable of driving the chuck to rotate is provided at the bottom of the base, and the emission end of the laser welding head faces the chuck;

[0007] The second linear drive module is connected to both sides of the cabinet, the first linear drive module and the second linear drive module are parallel, the second linear drive module is connected to a fixing block, and a fixing ring is installed between the two fixing blocks;

[0008] An air collecting pipe is installed at the bottom of the fixed ring, and a plurality of first nozzles are installed at equal distances at the bottom of the air collecting pipe. A connecting block is provided on the bottom side of the movable seat, and a second nozzle is installed on the connecting block. The jet ends of the first nozzle and the second nozzle are both facing the chuck. One side of the air collecting pipe and the air inlet end of the second nozzle are connected to an air supply pipe, and the other ends of the two air supply pipes are connected to an air source.

[0009] Optionally, the power mechanism includes a chuck seat arranged on the top of the base, the top of the chuck seat is fastened to the chuck by bolts, the bottom of the chuck seat is connected to the motor output shaft, and the motor is fixed to the bottom of the base.

[0010] Optionally, a clamping mechanism is coaxially provided on the top of the chuck, and the clamping mechanism includes a second telescopic mechanism installed on the top of the cabinet, the bottom of the second telescopic mechanism passes through the cabinet, and the bottom of the second telescopic mechanism is connected to a fixed plate, a connecting seat is installed at the bottom of the fixed plate, and a pressure block is rotatably connected to the bottom of the connecting seat, and the pressure block and the chuck are coaxially arranged.

[0011] Optionally, a first guide rod is installed at an edge of one end of the movable seat close to the mounting plate, and the other end of the first guide rod slides through the mounting plate.

[0012] Optionally, a sealed door is rotatably provided at the opening of the cabinet, and an observation window is provided in the middle of the sealed door.

[0013] Optionally, a second guide rod is installed on the top of the fixed plate, and the top of the second guide rod slides through the cabinet.

[0014] Optionally, the inner diameter of the fixing ring is larger than the diameter of the fixing disk, and the fixing ring is an open ring. During welding, the laser welding head extends through the opening of the fixing ring to the chuck.

[0015] Optionally, the chuck is a three-jaw chuck, a four-jaw chuck, or a five-jaw chuck.

[0016] Optionally, it further includes a control box disposed on the side of the cabinet, wherein a controller is disposed in the control box, and the controller is respectively connected to the second telescopic mechanism, the first telescopic mechanism, the first linear drive module, the second linear drive module, and the motor;

[0017] There are also two gas flow sensors in the control box. The outlets of the two gas flow sensors are connected to two gas pipes respectively, and solenoid valves are installed on the inlets of the gas flow sensors. The other end of the solenoid valve is connected to the gas source through a pipeline. The gas flow sensor and the solenoid valve are connected to the controller respectively.

[0018] Optionally, the gas source is a gas storage cylinder containing inert gas.

[0019] Compared with the prior art, the utility model can spray inert gas to the welding part of the workpiece through the first nozzle and the second nozzle when in use, and isolate the air while cooling the welding part, so as to prevent the welding part from being oxidized by oxygen in the air and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is the structural front view of the utility model.

[0022] Figure 3 It is a schematic diagram of the fixing ring structure of the utility model.

[0023] Figure 4 It is a schematic diagram of the connection structure between the telescopic mechanism and the laser welding head of the utility model.

[0024] In the figure: 1. base; 2. chuck seat; 3. first guide rod; 4. rotation adjustment motor; 5. first linear drive module; 6. laser welding head; 7. first telescopic mechanism; 8. mounting plate; 9. gas collecting pipe; 10. second linear drive module; 11. first nozzle; 12. pressure block; 13. connecting seat; 14. fixing ring; 15. cabinet; 16. fixing plate; 17. second guide rod; 18. second telescopic mechanism; 19. fixing block; 20. chuck; 21. motor; 22. gas pipe; 23. moving seat; 24. connecting block; 25. second nozzle; 26. control box. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 4 The utility model provides a technical solution: a welding device that is convenient for positioning parts, including a cabinet 15, a sealing door is rotatably provided at the opening of the cabinet 15, an observation window is provided in the middle of the sealing door, and a sealing ring is provided at the contact between the sealing door and the cabinet 15. When the sealing door is closed, the space inside the cabinet 15 can be sealed.

[0027] One side of the cabinet 15 is open, and the cabinet 15 is fixed on the base 1. A first linear drive module 5 perpendicular to the base 1 is installed on one side of the cabinet 15 near the opening, and a rotation adjustment motor 4 is installed on the first linear drive module 5. The other end of the rotation adjustment motor 4 is installed with an L-shaped mounting plate 8, and the other end of the mounting plate 8 is installed with a first telescopic mechanism 7. The first telescopic mechanism 7 is connected to a moving seat 23 arranged below the mounting plate 8, and a laser welding head 6 is installed on the bottom surface of the moving seat 23. The laser emitted by the laser welding head 6 can be irradiated on the welding part of the workpiece to be welded, and the welding part is heated and melted. After the melted workpiece part solidifies, the welding can be completed, and in actual use, the rotation adjustment motor 4 can adjust the rotation direction of the laser welding head 6, and then the welding angle of the workpiece can be adjusted as needed.

[0028] like Figure 1 As shown, a chuck 20 is provided on the top of the base 1, a power mechanism that can drive the chuck 20 to rotate is provided at the bottom of the base 1, and the emission end of the laser welding head 6 faces the chuck 20. During welding, the workpiece to be welded can be clamped and fixed by the chuck 20, which is convenient for fixing.

[0029] like Figure 3 As shown, the second linear drive module 10 is connected to both sides of the cabinet 15, the first linear drive module 5 and the second linear drive module 10 are parallel, the second linear drive module 10 is connected to the fixed block 19, and the fixed ring 14 is installed between the two fixed blocks 19. Under the action of the second linear drive module 10, the fixed ring 14 can be controlled to move up and down, and then the height of the fixed ring 14 can be adjusted according to the welding position of the workpiece to be welded. The second linear drive module and the first linear drive module can be linear motors, screw linear drive modules or other linear drive modules.

[0030] like Figure 3 and Figure 4 As shown, the bottom of the fixed ring 14 is connected to the gas collecting pipe 9 through a pipe bracket, and a plurality of first nozzles 11 are equidistantly installed at the bottom of the gas collecting pipe 9. A connecting block 24 is provided on the bottom side of the movable seat 23, and a second nozzle 25 is installed on the connecting block 24. The nozzle ends of the first nozzle 11 and the second nozzle 25 are both facing the chuck 20. One side of the gas collecting pipe 9 and the air inlet end of the second nozzle 25 are both connected to the gas supply pipe 22, and the other ends of the two gas supply pipes 22 are connected to the gas source. The gas source is a gas cylinder, and the gas cylinder is provided with inert gas. The first nozzle 11 and the second nozzle 25 form a ring distribution. During welding, the first nozzle 11 and the second nozzle 25 can spray the inert gas to the welding part in all directions, and while cooling the welding part of the workpiece, the welding part is separated from the oxygen in the air to prevent oxidation of the welding part.

[0031] When it is necessary to explain, the gas delivery pipe 22 is a hose, such as Figure 3 and Figure 4 As shown, the two gas pipes 22 are bent near the second nozzle 25 and the gas collecting pipe 9 , that is, the length of the gas pipe 22 is reserved so that the gas pipe 22 can be bent as the gas collecting pipe 9 and the second nozzle 25 move.

[0032] Specifically, when the utility model is in use, the workpiece to be welded is clamped and fixed on the chuck 20, and then the height of the laser welding head 6 and the fixing ring 14 are adjusted by the first linear drive module 5 and the second linear drive module 10, so that the laser welding head 6 is aligned with the welding part of the workpiece to be welded, and the first nozzle 11 and the second nozzle 25 are also aligned with the welding part, and then welding is performed. During the welding process, the inert gas in the gas source can be transported to the second nozzle 25 and the gas collecting pipe 9 along the gas supply pipe 22, and the inert gas in the gas collecting pipe 9 is ejected through the first nozzle 11, and the first nozzle 11 and the second nozzle 25 spray the inert gas to the welding part at a high speed, which cools the welding part and isolates the welding part from the external environment, thereby preventing the welding part of the workpiece from being oxidized.

[0033] Further, such as Figure 2 As shown, the power mechanism includes a chuck seat 2 disposed on the top of the base 1, the top of the chuck seat 2 is fastened to the chuck 20 by bolts, the bottom of the chuck seat 2 is connected to the output shaft of the motor 21, and the motor 21 is fixed to the bottom of the base 1. During welding, the motor 21 can drive the chuck seat 2 to rotate, and then the chuck 20 drives the workpiece to be welded to rotate relative to the laser welding head 6, and the welding can be completed after the workpiece to be welded rotates one circle.

[0034] Further, such as Figure 2 As shown, a clamping mechanism is coaxially arranged on the top of the chuck 20, and the clamping mechanism includes a second telescopic mechanism 18 installed on the top of the cabinet 15, the bottom of the second telescopic mechanism 18 penetrates the cabinet 15, and the bottom of the second telescopic mechanism 18 is connected to a fixed disk 16, a connecting seat 13 is installed at the bottom of the fixed disk 16, and a pressing block 12 is rotatably connected to the bottom of the connecting seat 13, and the pressing block 12 is coaxially arranged with the chuck 20. Before welding, the workpiece to be welded is first clamped and fixed by the chuck 20, and then the second telescopic mechanism 18 is controlled to extend, and the pressing block 12 is pushed downward, so that the bottom of the pressing block 12 is against the top of the workpiece to be welded, and the workpiece to be welded is pressed and fixed.

[0035] Further, such as Figure 4 As shown, the first guide rod 3 is installed at one end edge of the movable seat 23 close to the mounting plate 8, and the other end of the first guide rod 3 slides through the mounting plate 8. When in use, the extension and retraction of the first telescopic mechanism 7 can drive the movement of the movable seat 23, and then the distance between the laser welding head 6 and the workpiece to be welded can be adjusted, so that the laser focus emitted by the laser welding head 6 coincides with the welding part of the welding workpiece, and the welding process is performed.

[0036] Furthermore, the second telescopic mechanism 18 and the first telescopic mechanism 7 are one of a hydraulic cylinder, a pneumatic cylinder or an electric lifting rod. The second telescopic mechanism 18 can push the pressure block 12 downward to clamp and fix the workpiece. The telescopic adjustment of the first telescopic mechanism 7 adjusts the distance between the laser welding head 6 and the workpiece to be welded, so that the laser focus emitted by the laser welding head 6 coincides with the welding part of the workpiece to be welded, thereby facilitating the welding process.

[0037] Further, such as Figure 1 As shown, a second guide rod 17 is installed on the top of the fixed plate 16, and the top of the second guide rod 17 slides through the cabinet 15. Under the action of the second guide rod 17, the fixed plate 16 can be limited so that the fixed plate 16 remains stable.

[0038] Further, such as Figure 1 As shown, the inner diameter of the fixing ring 14 is larger than the diameter of the fixing disk 16, and the fixing ring 14 is an open ring. During welding, the laser welding head 6 extends to the chuck 20 through the opening of the fixing ring 14. In actual use, the fixing ring 14 will not collide with the fixing disk 16 during movement, and will not hinder the laser welding head 6 during welding.

[0039] Furthermore, the chuck 20 is a three-jaw chuck, a four-jaw chuck or a five-jaw chuck, and different chucks 20 can be replaced according to different workpieces, so that the chuck 20 can stably clamp and fix the workpiece.

[0040] Furthermore, if Figure 1 As shown, the utility model further includes a control box 26 disposed on the side of the cabinet 15, and a controller is disposed in the control box 26, and the controller is respectively connected to the second telescopic mechanism 18, the first telescopic mechanism 7, the first linear drive module 5, the second linear drive module 10, and the motor 21. The controller is a control mainboard, a host or a PLC logic controller, and the second telescopic mechanism 18, the first telescopic mechanism 7, the first linear drive module 5, the second linear drive module 10, and the motor 21 can be controlled by the controller to work, adjust the laser welding head 6 and the fixing ring 14 to the preset position, and automatically weld the fixed workpiece.

[0041] Two gas flow sensors are also provided in the control box 26. The outlets of the two gas flow sensors are respectively connected to the two gas pipes 22, and electromagnetic valves are installed on the inlets of the gas flow sensors. The other end of the electromagnetic valve is connected to the gas source through a pipeline. The gas flow sensor and the electromagnetic valve are respectively connected to the controller. In actual use, the gas flow sensor can detect the flow of the inert gas transported by the two gas pipes 22 and transmit the data to the controller. The controller then controls the opening and closing size of the electromagnetic valve according to actual needs to control the emission of the inert gas to avoid waste.

[0042] Based on the above embodiment, further optimization can be performed by installing a concentration sensor and an alarm corresponding to the inert gas on the side of the cabinet 15, and the concentration sensor and the alarm are respectively connected to the controller. When the inert gas concentration around the side of the cabinet 15 reaches a preset value, an alarm prompt is given.

[0043] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0044] 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 welding device for facilitating positioning of parts, comprising a cabinet (15), one side of the cabinet (15) is open, the cabinet (15) is fixed on a base (1), and is characterized in that: A first linear drive module (5) perpendicular to the base (1) is installed on one side of the cabinet (15) near the opening, a rotation adjustment motor (4) is installed on the first linear drive module (5), an L-shaped mounting plate (8) is installed on the other end of the rotation adjustment motor (4), and a first telescopic mechanism (7) is installed on the top of the other end of the mounting plate (8), the first telescopic mechanism (7) is connected to a moving seat (23) arranged below the mounting plate (8), and a laser welding head (6) is installed on the bottom surface of the moving seat (23); A chuck (20) is provided at the top of the base (1), a power mechanism capable of driving the chuck (20) to rotate is provided at the bottom of the base (1), and an emission end of the laser welding head (6) faces the chuck (20); The second linear drive module (10) is connected to both sides of the cabinet (15), the first linear drive module (5) and the second linear drive module (10) are parallel, the second linear drive module (10) is connected to a fixing block (19), and a fixing ring (14) is installed between the two fixing blocks (19); A gas collecting pipe (9) is installed at the bottom of the fixed ring (14), and a plurality of first nozzles (11) are installed at equal intervals at the bottom of the gas collecting pipe (9). A connecting block (24) is provided on the bottom side of the movable seat (23), and a second nozzle (25) is installed on the connecting block (24). The nozzle ends of the first nozzle (11) and the second nozzle (25) are both directed toward the chuck (20). One side of the gas collecting pipe (9) and the air inlet end of the second nozzle (25) are connected to an air supply pipe (22), and the other ends of the two air supply pipes (22) are connected to an air source.

2. A welding device for facilitating part positioning according to claim 1, characterized in that: The power mechanism comprises a chuck seat (2) arranged on the top of the base (1); the top of the chuck seat (2) is fastened to the chuck (20) by bolts; the bottom of the chuck seat (2) is connected to the output shaft of the motor (21), and the motor (21) is fixed to the bottom of the base (1).

3. A welding device for facilitating part positioning according to claim 2, characterized in that: A clamping mechanism is coaxially arranged on the top of the chuck (20), and the clamping mechanism comprises a second telescopic mechanism (18) installed on the top of the cabinet (15), the bottom of the second telescopic mechanism (18) passes through the cabinet (15), and the bottom of the second telescopic mechanism (18) is connected to a fixed disk (16), the bottom of the fixed disk (16) is installed with a connecting seat (13), the bottom of the connecting seat (13) is rotatably connected with a pressing block (12), and the pressing block (12) and the chuck (20) are coaxially arranged.

4. A welding device for facilitating part positioning according to claim 3, characterized in that: A first guide rod (3) is installed at one end edge of the movable seat (23) close to the mounting plate (8), and the other end of the first guide rod (3) slides through the mounting plate (8).

5. A welding device for facilitating part positioning according to claim 1, characterized in that: A sealing door is rotatably provided at the opening of the cabinet (15), and an observation window is provided in the middle of the sealing door.

6. A welding device for facilitating part positioning according to claim 3, characterized in that: A second guide rod (17) is installed on the top of the fixed plate (16), and the top of the second guide rod (17) slides through the cabinet (15).

7. A welding device for facilitating part positioning according to claim 3, characterized in that: The inner diameter of the fixing ring (14) is greater than the diameter of the fixing disk (16), and the fixing ring (14) is an open ring. During welding, the laser welding head (6) extends through the opening of the fixing ring (14) to the chuck (20).

8. A welding device for facilitating part positioning according to claim 1, characterized in that: The chuck (20) is a three-jaw chuck, a four-jaw chuck or a five-jaw chuck.

9. A welding device for facilitating part positioning according to claim 5, characterized in that: It also includes a control box (26) arranged on the side of the cabinet (15), wherein a controller is arranged in the control box (26), and the controller is respectively connected to the second telescopic mechanism (18), the first telescopic mechanism (7), the first linear drive module (5), the second linear drive module (10), and the motor (21); Two gas flow sensors are also arranged in the control box (26), the outlets of the two gas flow sensors are respectively connected to the two gas pipes (22), and electromagnetic valves are installed on the inlets of the gas flow sensors, the other ends of the electromagnetic valves are connected to the gas source through pipelines, and the gas flow sensors and the electromagnetic valves are respectively connected to the controller.

10. A welding device for facilitating part positioning according to claim 1 or 9, characterized in that: The gas source is a gas cylinder containing inert gas.

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