Integrated ultrasonic-assisted handheld laser welding gun
By combining laser welding and ultrasonic generators at the tail of the welding torch head, the problem of large size and inconvenient handheld in the prior art is solved, and the welding efficiency and joint performance are improved.
Patent Information
- Application Number
- CN202421776062.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In existing ultrasonic assisted laser welding equipment, the laser welding head and the ultrasonic emission head are designed separately, which leads to a large size of the welding gun, which is inconvenient for handheld laser welding guns to perform flexible laser welding operations.
The integrated design is adopted, combining the laser welding torch with an ultrasonic generator, and is arranged at the tail of the welding torch head, including a laser galvanometer motor, lens compartment, ultrasonic transducer, ultrasonic amplitude rod and ultrasonic emission end, and the melt pool is processed through ultrasonic waves.
The welding efficiency is improved, defects such as welding pores are reduced, weld grains are refined, the performance of joints is enhanced, and the convenience of welding is improved through an integrated structure.
Smart Images
Figure CN222830926U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding equipment, in particular to an integrated ultrasonic-assisted handheld laser welding gun. Background Art
[0002] Ultrasound is a physical wave that propagates at a frequency of more than 20 kHz. This sound wave exceeds the upper limit of human hearing. The mechanical vibration generated by ultrasound can cause a very small displacement of the medium in its static position. The resulting ultrasonic vibration can propagate from one part of the medium to another in the form of a wave.
[0003] By utilizing the unique nonlinear effect of ultrasound, a good treatment effect on the molten metal can be achieved. Introducing ultrasound into fusion welding can improve welding efficiency, reduce defects such as welding porosity, refine the weld grains and thus improve the performance of the joint.
[0004] In existing ultrasonic-assisted laser welding equipment, the laser welding head and the ultrasonic transmitting head are mostly designed separately, which makes the laser welding gun larger and inconvenient to hold the laser welding gun for flexible laser welding operations.
[0005] Therefore, the present application provides an integrated ultrasonic-assisted handheld laser welding gun to meet the needs. Utility Model Content
[0006] The purpose of the present application is to provide an integrated ultrasonic-assisted handheld laser welding gun, which adopts an integrated design to combine the laser welding gun with an ultrasonic generating device, so as to facilitate the use of ultrasonic technology to assist laser welding.
[0007] To achieve the above objectives, the present application provides the following technical solution: an integrated ultrasonic-assisted handheld laser welding gun, comprising:
[0008] A welding gun head, wherein a laser galvanometer motor is provided at the tail of the welding gun head, a lens chamber is provided on the welding gun head, a laser focusing lens and a laser protection lens are provided in the lens chamber, an ultrasonic transducer is provided at the front of the lens chamber, an ultrasonic amplitude rod is provided at the front of the ultrasonic transducer, an ultrasonic transmitting end is provided at the front of the ultrasonic amplitude rod, a welding nozzle is provided on the ultrasonic transmitting end, and ultrasonic waves are used to process the molten pool after heating and melting during laser welding.
[0009] Preferably, a welding gun handle is provided at the bottom of the welding gun head, a laser collimator is provided inside the welding gun handle, and a laser connector is provided at the bottom of the welding gun handle.
[0010] Preferably, a water cooling mechanism is provided on the outer wall of the ultrasonic transducer for dissipating heat from the ultrasonic transducer, the water cooling mechanism is connected to a liquid guide tube, a tube clamp is provided on the side wall of the welding gun handle, and the tube clamp is used to install the liquid guide tube.
[0011] Preferably, the outer cover of the welding gun head and the welding gun handle is provided with a shell, the shell is a shell body that is buckled on the left and right, the top of the shell is a gun head shell, and the bottom of the shell is a handle shell;
[0012] The gun head shell cover is arranged outside the welding gun head, and the ultrasonic horn extends from the front of the gun head shell; the handle shell cover is arranged outside the welding gun handle, and the laser connecting head protrudes from the bottom of the welding gun handle.
[0013] Preferably, an opening is provided at the top of the lens bin, in which the laser focusing lens and the laser protection lens are plugged, and a maintenance port is provided at the top of the gun head shell, the maintenance port is located above the lens bin, and the maintenance port matches the size of the lens bin, so as to facilitate the installation and disassembly of the lens for maintenance.
[0014] Preferably, a switch is provided on the welding gun handle, and a switch slot is provided on the handle shell, and the switch slot is adapted to the switch.
[0015] In summary, the technical effects and advantages of the utility model are:
[0016] The utility model arranges an ultrasonic generating device at the front end of the welding gun, and uses the ultrasonic transmitting end to emit ultrasonic vibration to the welding molten pool. Through the ultrasonic vibration, the molten weld pool is assisted to fuse more fully, the tensile strength and bending performance of the welding profile are enhanced, and the density of the weld is effectively improved. Through the integrated laser welding gun, the welding angle and speed can be flexibly adjusted when welding dissimilar metals, thereby improving the convenience of ultrasonic-assisted laser welding.
[0017] In the utility model, a water cooling mechanism is arranged on the ultrasonic transducer to dissipate heat, and a liquid guide tube is used to conduct heat, so that the working temperature of the ultrasonic transducer can be reduced, the ultrasonic generation stability during ultrasonic-assisted laser welding can be improved, the service life can be extended, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0021] Figure 3 It is a schematic diagram of the internal left-side structure of the utility model.
[0022] In the figure: 1. welding gun head; 2. welding gun handle; 3. outer shell; 4. trigger switch; 10. lens compartment; 11. ultrasonic transducer; 12. laser galvanometer motor; 13. ultrasonic amplitude transformer; 14. ultrasonic transmitting end; 20. laser collimator; 21. pipe clamp; 22. laser connector; 30. gun head shell; 31. maintenance port; 32. handle shell; 101. laser focusing lens; 102. laser protection lens. DETAILED DESCRIPTION
[0023] 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.
[0024] Example: Reference Figure 1-3 An integrated ultrasonic-assisted handheld laser welding gun shown includes a welding gun head 1, a laser galvanometer motor 12 is provided at the tail of the welding gun head 1, a lens bin 10 is provided on the welding gun head 1, a laser focusing lens 101 and a laser protection lens 102 are provided in the lens bin 10, an ultrasonic transducer 11 is provided at the front of the lens bin 10, an ultrasonic amplitude transformer 13 is provided at the front of the ultrasonic transducer 11, an ultrasonic transmitting end 14 is provided at the front of the ultrasonic amplitude transformer 13, and a through light guide cavity is provided inside the ultrasonic transducer 11, the ultrasonic amplitude transformer 13 and the ultrasonic transmitting end 14, a welding nozzle is provided on the ultrasonic transmitting end 14, and the welding nozzle is connected to the front end of the light guide cavity.
[0025] As an implementation method in this embodiment, in order to facilitate holding and connecting the laser light source, such as Figure 2 , Figure 3 As shown, a welding gun handle 2 is provided at the bottom of the welding gun head 1 , a laser collimator 20 is provided inside the welding gun handle 2 , and a laser connector 22 is provided at the bottom of the welding gun handle 2 .
[0026] As an implementation method in this embodiment, in order to extend the service life and improve the working stability, Figure 2 , Figure 3 As shown, a water cooling mechanism is provided on the outer wall of the ultrasonic transducer 11. The water cooling mechanism is a heat dissipation pipe surrounding the ultrasonic transducer 11. The heat dissipation pipe is connected to an external water-cooled radiator through a liquid guide pipe. A pipe clamp 21 is provided on the side wall of the welding gun handle 2 for installing the liquid guide pipe.
[0027] As an implementation method in this embodiment, in order to protect the internal structure and facilitate holding the laser welding gun for welding, Figures 1 to 3 As shown, the outer cover of the welding gun head 1 and the welding gun handle 2 is provided with a shell 3, and the shell 3 is a shell body that is buckled on the left and right. The top of the shell 3 is a gun head shell 30, and the bottom of the shell 3 is a handle shell 32;
[0028] The gun head shell 30 is covered on the outside of the welding gun head 1, and the ultrasonic horn 13 extends from the front of the gun head shell 30. The handle shell 32 is covered on the outside of the welding gun handle 2, and the laser connector 22 protrudes from the bottom of the welding gun handle 2. The laser connector 22 is connected to the laser generator.
[0029] As an implementation method in this embodiment, in order to facilitate the maintenance and replacement of the lenses in the lens bin 10, as shown in FIG. Figures 1 to 3 As shown, an opening is provided at the top of the lens bin 10, in which a laser focusing lens 101 and a laser protection lens 102 are inserted, and a maintenance port 31 is provided at the top of the gun head shell 30, which is located above the lens bin 10 and is matched with the lens bin 10.
[0030] As an implementation method in this embodiment, in order to facilitate the control of the working state during the laser welding operation, Figures 1 to 3 As shown, a trigger switch 4 is provided on the welding gun handle 2 for controlling the on and off of the laser light path and the start and stop of the ultrasonic transducer 11 , and a switch slot is provided on the handle shell 32 , in which the trigger switch 4 is installed.
[0031] Working principle of the utility model: when performing laser welding, use the laser connector 22 to connect the laser generator, hold the handle shell 32, aim the ultrasonic transmitting end 14 at the welding part, pull the trigger switch 4, make the light path in the welding gun handle 2 unobstructed, and the laser is injected into the welding gun head 1 through the laser collimator 20. The laser galvanometer motor 12 adjusts the laser deflection angle to make the laser shoot to the lens chamber 10. After being focused by the laser focusing mirror 101, the laser is emitted from the welding nozzle on the ultrasonic transmitting end 14 to heat and melt the welding part. At the same time, the ultrasonic transducer 11 is started to generate ultrasonic vibration, which is transmitted through the ultrasonic amplitude transformer 13. The ultrasonic wave is conducted, and the ultrasonic wave is gathered from the ultrasonic transmitting end 14 and emitted to the molten pool, thereby eliminating bubbles in the molten pool, enhancing the flow of the upper and lower layers of the molten pool, and attenuating the ultrasound in the molten metal. The ultrasonic energy is converted into heat, which increases the heat input at the welding point and makes the weld bead more uniform. In this process, the heat dissipation pipe on the ultrasonic transducer 11 drives the heat through water cooling, thereby increasing the service life of the ultrasonic transducer 11, and the tube clamp 21 fixes the liquid guide tube. Through the maintenance port 31 on the gun head shell 30, the laser focusing lens 101 and the laser protection lens 102 in the lens compartment 10 can be pulled out, and the lens can be maintained and replaced.
[0032] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.
[0033] Components not described in detail herein are prior art.
[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An integrated ultrasonic-assisted handheld laser welding gun, characterized in that: include: A welding gun head (1), wherein a laser galvanometer motor (12) is provided at the rear of the welding gun head (1), a lens chamber (10) is provided on the welding gun head (1), a laser focusing lens (101) and a laser protection lens (102) are provided in the lens chamber (10), an ultrasonic transducer (11) is provided at the front of the lens chamber (10), an ultrasonic horn (13) is provided at the front of the ultrasonic transducer (11), an ultrasonic horn (13) is provided at the front of the ultrasonic horn (13), an ultrasonic transmitting end (14) is provided at the front of the ultrasonic horn (13), and a welding nozzle is provided on the ultrasonic transmitting end (14).
2. The integrated ultrasonic-assisted handheld laser welding gun according to claim 1, characterized in that: A welding gun handle (2) is provided at the bottom of the welding gun head (1), a laser collimator (20) is provided inside the welding gun handle (2), and a laser connector (22) is provided at the bottom of the welding gun handle (2).
3. The integrated ultrasonic-assisted handheld laser welding gun according to claim 2, characterized in that: A water cooling mechanism is provided on the outer wall of the ultrasonic transducer (11), and a liquid guide tube is connected to the water cooling mechanism. A tube clamp (21) is provided on the side wall of the welding gun handle (2), and the tube clamp (21) is used to install the liquid guide tube.
4. The integrated ultrasonic-assisted handheld laser welding gun according to claim 2, characterized in that: The outer cover of the welding gun head (1) and the welding gun handle (2) is provided with an outer shell (3), the outer shell (3) is a shell body that is buckled on the left and right, the top of the outer shell (3) is a gun head shell (30), and the bottom of the outer shell (3) is a handle shell (32); The gun head shell (30) is disposed outside the welding gun head (1), and the ultrasonic horn (13) extends from the front of the gun head shell (30); the handle shell (32) is disposed outside the welding gun handle (2), and the laser connection head (22) protrudes from the bottom of the welding gun handle (2).
5. The integrated ultrasonic-assisted handheld laser welding gun according to claim 4, characterized in that: The top of the lens chamber (10) is provided with an opening, into which the laser focusing lens (101) and the laser protection lens (102) are plugged, and the top of the gun head shell (30) is provided with a maintenance port (31), the maintenance port (31) is located above the lens chamber (10), and the size of the maintenance port (31) matches that of the lens chamber (10).
6. The integrated ultrasonic-assisted handheld laser welding gun according to claim 4, characterized in that: The welding gun handle (2) is provided with a switch, and the handle shell (32) is provided with a switch slot, and the switch slot is adapted to match the switch.