Hardware laser welding machine

Abstract

The application belongs to the technical field of laser welding equipment, and particularly relates to a hardware laser welding machine, which comprises a rack, an electric control box, a feeding mechanism and a six-axis welding manipulator. The feeding mechanism comprises a moving assembly, a driving assembly and a clamping assembly. The moving assembly is fixed to the rack and connected with the driving assembly and the clamping assembly respectively. The driving assembly is connected with the rack. The clamping assembly is fixed to the moving assembly and used for clamping hardware. The hardware laser welding machine provided in the application is designed in a parallel and symmetrical mode by using double feeding mechanisms, and is coordinately controlled by the electric control box to realize a welding and material preparation alternating operation mode. When the first feeding mechanism is at a welding station, the second feeding mechanism synchronously completes the feeding and clamping of hardware. After the first feeding mechanism completes welding, the driving assembly drives the first feeding mechanism to quickly retreat to a feeding station. The second feeding mechanism immediately moves to the welding station. The six-axis welding manipulator seamlessly switches welding, and the whole process does not need to stop, thereby improving the welding efficiency.

Description

Technical Field

[0001] This invention belongs to the field of laser welding equipment technology, and particularly relates to a laser welding machine for hardware parts. Background Technology

[0002] Laser welding technology, with its advantages of high welding speed, small heat-affected zone, and high weld quality, has been widely used in the hardware processing field, covering the production of various products such as stainless steel door and window fittings, automotive sheet metal parts, precision mechanical fasteners, and appliance inner liner components. As the manufacturing industry transforms towards large-scale and automated production, the market is placing higher demands on the capacity and quality of hardware welding. However, traditional laser welding machines for hardware still have the following shortcomings:

[0003] Traditional metal laser welding machines generally adopt a single feeding mechanism design. The workflow is as follows: a person manually fixes a single / batch of metal parts to a single feeding station → starts the equipment to complete the welding → after stopping the machine, the finished product is manually disassembled → the workpiece to be welded is re-clamped → the equipment is started again. This mode results in long equipment downtime and reduces welding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a laser welding machine for hardware parts, which aims to solve the technical problem of long downtime and reduced welding efficiency in traditional laser welding machines for hardware parts.

[0005] To achieve the above objectives, the hardware laser welding machine provided in this embodiment of the invention includes a frame, an electrical control box, a feeding mechanism, and a six-axis welding robot. The electrical control box is fixed to the frame and electrically connected to the feeding mechanism and the six-axis welding robot, respectively. There are two feeding mechanisms arranged in parallel and symmetrically. The six-axis welding robot is disposed between the two feeding mechanisms and fixed to the frame.

[0006] The feeding mechanism includes a moving component, a driving component, and a clamping component. The moving component is fixed to the frame and connected to the driving component and the clamping component respectively. The driving component is connected to the frame. The clamping component is fixed to the moving component and is used to clamp the hardware.

[0007] As an optional embodiment of the present invention, the moving component includes a moving slide rail, a moving slider, and a moving slide plate. The moving slide rail is fixed to the frame, the moving slider is slidably connected to the moving slide rail, and is fixedly connected to the moving slide plate. The moving slide rail is disposed on one side of the six-axis welding robot and extends to one end of the six-axis welding robot.

[0008] As an optional embodiment of the present invention, the drive assembly includes a drive motor, a bearing housing, a lead screw, and a nut housing. The drive motor is fixed to the frame and fixedly connected to the lead screw. The bearing housing is fixed to the frame. The lead screw is fixedly inserted through the bearing housing. The nut housing is threadedly connected to the lead screw and fixedly connected to the movable slide plate.

[0009] As an optional embodiment of the present invention, the clamping assembly includes a fixing rod, a clamping cylinder, and a working plate. Multiple fixing rods are provided and arranged in parallel. The fixing rods are respectively fixedly connected to the movable slide plate and the working plate. Multiple clamping cylinders are provided and are evenly fixed to the outer side of the working plate.

[0010] As an optional embodiment of the present invention, the clamping cylinder includes a fixed seat, a clamping cylinder body, a piston rod, a clamping pressure rod, and a rotating plate. The fixed seat is fixedly connected to the working plate and the clamping cylinder body respectively. The piston rod is movably connected to the clamping cylinder body. One end of the clamping pressure rod is rotatably connected to the piston rod. One end of the rotating plate is rotatably connected to the fixed seat, and the other end is rotatably connected to the clamping pressure rod.

[0011] As an optional embodiment of the present invention, the clamping rod is L-shaped and is disposed on one side of the working plate.

[0012] As an optional embodiment of the present invention, the six-axis welding robot includes a six-axis robot and a laser welding head. The six-axis robot is fixed to the frame and disposed on one side of the feeding mechanism, and the laser welding head is fixed to the six-axis robot and disposed above the work plate.

[0013] The above-mentioned technical solutions of the metal laser welding machine provided in the embodiments of the present invention have at least one of the following technical effects:

[0014] The metal laser welding machine provided in this application adopts a parallel and symmetrical design with dual feeding mechanisms. Through coordinated control by the electrical control box, it realizes an alternating operation mode of welding and material preparation. When the first feeding mechanism is in the welding station, the second feeding mechanism simultaneously completes the feeding and clamping of the metal parts. After the first feeding mechanism finishes welding, the drive component drives it to quickly return to the feeding station, and the second feeding mechanism immediately moves to the welding station. The six-axis welding robot seamlessly switches between welding, and no machine stoppage is required throughout the process, which improves welding efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A perspective view of a metal laser welding machine provided in an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0018] Figure 3 for Figure 1 A magnified view of a section at point B.

[0019] Figure 4 A perspective view of a six-axis welding robot for a metal laser welding machine provided in an embodiment of the present invention.

[0020] The following are the labeling elements in the figure:

[0021] 1. Frame; 2. Electrical control box; 3. Feeding mechanism; 4. Six-axis welding robot;

[0022] 31. Moving component; 32. Driving component; 33. Clamping component;

[0023] 311. Sliding rail; 312. Sliding skateboard;

[0024] 321. Drive motor; 322. Bearing housing; 323. Lead screw;

[0025] 331. Fixing rod; 332. Clamping cylinder; 333. Working plate;

[0026] 3321. Fixed seat; 3322. Clamping cylinder body; 3323. Piston rod; 3324. Clamping pressure rod; 3325. Rotating plate;

[0027] 41. Six-axis robotic arm; 42. Laser welding head. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0032] In one embodiment of the present invention, such as Figures 1-4 As shown, a metal laser welding machine is provided, including a frame 1, an electrical control box 2, a feeding mechanism 3, and a six-axis welding robot 4. The electrical control box 2 is fixed to the frame 1 and is electrically connected to the feeding mechanism 3 and the six-axis welding robot 4 respectively. There are two feeding mechanisms 3, which are arranged in parallel and symmetrically. The six-axis welding robot 4 is located between the two feeding mechanisms 3 and is fixed to the frame 1.

[0033] The feeding mechanism 3 includes a moving component 31, a driving component 32, and a clamping component 33. The moving component 31 is fixed to the frame 1 and is connected to the driving component 32 and the clamping component 33 respectively. The driving component 32 is connected to the frame 1. The clamping component 33 is fixed to the moving component 31 and is used to clamp the hardware parts.

[0034] The metal laser welding machine provided in this application adopts a parallel and symmetrical design of dual feeding mechanisms 3. It is coordinated and controlled by the electrical control box 2 to realize the alternating operation mode of welding and material preparation. When the first feeding mechanism 3 is in the welding station, the second feeding mechanism 3 simultaneously completes the feeding and clamping of the metal parts. After the first feeding mechanism 3 finishes welding, the drive component 32 drives it to quickly return to the feeding station, and the second feeding mechanism 3 immediately moves to the welding station. The six-axis welding robot 4 seamlessly switches to welding without stopping the machine throughout the process, which improves the welding efficiency.

[0035] In another embodiment of the present invention, the moving component 31 includes a moving slide rail 311, a moving slider, and a moving slide plate 312. The moving slide rail 311 is fixed to the frame 1, the moving slider is slidably connected to the moving slide rail 311, and fixedly connected to the moving slide plate 312. The moving slide rail 311 is disposed on one side of the six-axis welding robot 4 and extends to one end of the six-axis welding robot 4. The moving component 31 drives the clamping component 33 to reciprocate through the drive component 32 to perform loading and unloading operations.

[0036] In another embodiment of the present invention, the drive assembly 32 includes a drive motor 321, a bearing housing 322, a lead screw 323, and a nut seat. The drive motor 321 is fixed to the frame 1 and is fixedly connected to the lead screw 323. The bearing housing 322 is fixed to the frame 1. The lead screw 323 is fixedly inserted through the bearing housing 322. The nut seat is threadedly connected to the lead screw 323 and is fixedly connected to the movable slide plate 312. The drive assembly 32 provides power to transport the movable assembly 31 and the clamp assembly back and forth for loading and unloading operations. After the electrical control box 2 issues an action command, the drive motor 321 starts and outputs power, driving the lead screw 323, which is fixedly connected to it, to rotate. The lead screw 323 maintains stable rotation under the support of the bearing seat 322 on the frame 1, and its thread structure forms a threaded engagement with the nut seat. The rotational motion is converted into linear motion through the threaded transmission, and the nut seat moves along the axial direction of the lead screw 323. Since the nut seat is rigidly fixed to the movable slide plate 312, it drives the movable slide plate 312 (and the clamping assembly 33 and hardware above it) to move precisely along the movable slide rail 311, realizing the switching of the feeding mechanism 3 between the loading station and the welding station.

[0037] In another embodiment of the present invention, the clamping assembly 33 includes a fixing rod 331, a clamping cylinder 332, and a working plate 333. Multiple fixing rods 331 are provided and arranged in parallel. The fixing rods 331 are fixedly connected to the movable slide plate 312 and the working plate 333 respectively. Multiple clamping cylinders 332 are provided and are evenly fixed to the outer side of the working plate 333.

[0038] In another embodiment of the present invention, the clamping cylinder 332 includes a fixed seat 3321, a clamping cylinder body 3322, a piston rod 3323, a clamping pressure rod 3324, and a rotating plate 3325. The fixed seat 3321 is fixedly connected to the working plate 333 and the clamping cylinder body 3322 respectively. The piston rod 3323 is movably connected to the clamping cylinder body 3322. One end of the clamping pressure rod 3324 is rotatably connected to the piston rod 3323. One end of the rotating plate 3325 is rotatably connected to the fixed seat 3321, and the other end is rotatably connected to the clamping pressure rod 3324.

[0039] The operator places the hardware part in the preset position on the work plate 333. The electrical control box 2 sends a command, and multiple evenly distributed clamping cylinders 332 move synchronously. The piston rod 3323 inside the clamping cylinder body 3322 extends. The piston rod 3323 pushes one end of the clamping pressure rod 3324. Through the linkage of the rotating plate 3325, the fixed seat 3321, and the clamping pressure rod 3324, the L-shaped clamping pressure rod 3324 is driven to rotate downward around the fixed seat 3321. The other end of the clamping pressure rod 3324 precisely presses against the surface of the hardware part, achieving multi-point uniform clamping. After welding is completed, the piston rod 3323 retracts, driving the clamping pressure rod 3324 to rotate in the opposite direction to reset, releasing the hardware part. The operator can then remove the part or reload it.

[0040] In another embodiment of the present invention, the clamping rod 3324 is L-shaped and is disposed on one side of the working plate 333.

[0041] In another embodiment of the present invention, the six-axis welding robot 4 includes a six-axis robot 41 and a laser welding head 42. The six-axis robot 41 is fixed to the frame 1 and disposed on one side of the feeding mechanism 3. The laser welding head 42 is fixed to the six-axis robot 41 and disposed above the work plate 333.

[0042] During equipment initialization, the six-axis robot 41 automatically returns to its origin, and the laser welding head 42 preheats to standby temperature, awaiting a workstation signal. The electrical control box 2 loads preset welding parameters and path programs. When the feeding mechanism 3 moves to the welding station and sends a positioning confirmation signal, the six-axis robot 41 drives the laser welding head 42 to move to the welding start position according to the preset path. The laser welding head 42 emits a laser, and the robot moves the welding head along the welding trajectory of the hardware to complete spot welding or seam welding operations. During the process, welding parameters are fed back to the electrical control box 2 in real time to ensure process stability. After a single feeding mechanism 3 finishes welding, the laser welding head 42 stops emitting light, and the robot quickly resets to the standby position, waiting for the next set of feeding mechanisms 3 to arrive before seamlessly starting the next round of welding for continuous welding operations.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding machine for hardware parts, characterized in that, The device includes a frame, an electrical control box, a feeding mechanism, and a six-axis welding robot. The electrical control box is fixed to the frame and electrically connected to the feeding mechanism and the six-axis welding robot. There are two feeding mechanisms arranged in parallel and symmetrically. The six-axis welding robot is located between the two feeding mechanisms and fixed to the frame. The feeding mechanism includes a moving component, a driving component, and a clamping component. The moving component is fixed to the frame and connected to the driving component and the clamping component respectively. The driving component is connected to the frame. The clamping component is fixed to the moving component and is used to clamp the hardware.

2. The laser welding machine for hardware parts according to claim 1, characterized in that, The moving component includes a moving slide rail, a moving slider, and a moving slide plate. The moving slide rail is fixed to the frame, the moving slider is slidably connected to the moving slide rail, and is fixedly connected to the moving slide plate. The moving slide rail is located on one side of the six-axis welding robot and extends to one end of the six-axis welding robot.

3. The laser welding machine for hardware parts according to claim 2, characterized in that, The drive assembly includes a drive motor, a bearing housing, a lead screw, and a nut housing. The drive motor is fixed to the frame and is fixedly connected to the lead screw. The bearing housing is fixed to the frame. The lead screw is fixedly inserted through the bearing housing. The nut housing is threaded to the lead screw and is fixedly connected to the movable slide plate.

4. A laser welding machine for hardware parts according to claim 3, characterized in that, The clamping assembly includes a fixing rod, a clamping cylinder, and a working plate. Multiple fixing rods are provided and arranged in parallel. The fixing rods are fixedly connected to the movable slide plate and the working plate respectively. Multiple clamping cylinders are provided and are evenly fixed to the outer side of the working plate.

5. A laser welding machine for hardware parts according to claim 4, characterized in that, The clamping cylinder includes a fixed base, a clamping cylinder body, a piston rod, a clamping pressure rod, and a rotating plate. The fixed base is fixedly connected to the working plate and the clamping cylinder body respectively. The piston rod is movably connected to the clamping cylinder body. One end of the clamping pressure rod is rotatably connected to the piston rod. One end of the rotating plate is rotatably connected to the fixed base, and the other end is rotatably connected to the clamping pressure rod.

6. A laser welding machine for hardware parts according to claim 5, characterized in that, The clamping rod is L-shaped and is located on one side of the working plate.

7. A laser welding machine for hardware parts according to claim 4, characterized in that, The six-axis welding robot includes a six-axis robot and a laser welding head. The six-axis robot is fixed to the frame and is located on one side of the feeding mechanism. The laser welding head is fixed to the six-axis robot and is located above the work plate.

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