Laser welding head convenient to operate

Abstract

The utility model discloses a laser welding head convenient to operate, which comprises a laser welding main machine, a connector, a connector located at the front end of the laser welding main machine and a welding probe rod located at the front end of the connector, a protection window knob is arranged on the outer wall of the upper end of the laser welding main machine close to the front side, and a welding nozzle is arranged at the front end of the welding probe rod. According to the laser welding head, the novel welding guide device is additionally arranged outside the welding probe rod of the laser welding head, and the welding guide device can replace a welding nozzle to be in contact with a welding position after being adjusted, so that the situation that the welding nozzle is frequently in contact with the welding position during welding and is excessively abraded can be avoided; and the welding guide device plays a role in protecting the welding nozzle and also plays a role in guiding, so that the welding nozzle can move more stably according to the welding track and complete welding operation, dust and dirt at the non-welding position can be cleaned in the guiding process, and therefore the welding effect can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to laser welding, and in particular relates to a laser welding head which is easy to operate. 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 laser welding head is 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 workpiece surface, and the surface heat diffuses to the inside through heat conduction. By controlling the laser pulse width, energy, peak power, repetition frequency and other parameters, the workpiece is melted to form a specific molten pool.

[0003] After searching, the patent document with application number CN202220658964.5 discloses a handheld laser welding head with high safety and reliability, which belongs to the field of workpiece processing technology. It includes a machine body, and a filling bin and an adjustment bin are respectively provided on both sides of the machine body. A laser generator is provided on one side of the adjustment bin, and an air pressure bin is installed on one side of the filling bin. The handheld laser welding head with high safety and reliability is provided with an air pressure chamber, a welding head and a connecting seat. When the air flow passes through the cover body, the cover body presses the reset spring under the action of wind resistance, and the laser beam acts on the molten pool on the surface of the workpiece synchronously with the protective gas. After the protective gas is turned off, it is placed. During this process, the cover body loses the wind resistance and is reset under the action of the reset spring, so that it can be automatically popped out during use and automatically stored after use, effectively preventing the welding head from being bumped and deformed, and even affecting the subsequent passage of the laser beam or the obstruction of the passage of the protective gas. However, when the laser welding head performs laser welding on the welded object in a handheld operation mode, as the welding nozzle of the laser welding head moves along the welding track to complete the entire laser welding process, the welding nozzle will easily contact the welding position. If the contact time is too long, it will easily cause the welding nozzle to wear, thereby affecting the welding effect of the welding nozzle. Utility Model Content

[0004] The purpose of the utility model is to provide a laser welding head that is easy to operate, so as to solve the problem proposed in the above-mentioned background technology that as the welding nozzle of the laser welding head moves along the welding track to complete the entire laser welding process, the welding nozzle will easily contact the welding position, and if the contact time is too long, it will easily cause the welding nozzle to wear.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser welding head that is easy to operate, comprising a laser welding main unit and a connecting head, the connecting head being located at the front end of the laser welding main unit, a welding probe being located at the front end of the connecting head, a protective window knob being provided on the outer wall of the upper end near the front side of the laser welding main unit, a welding nozzle being provided at the front end of the welding probe, and a welding guide device being sleeved on the outside of the welding probe.

[0006] Preferably, the welding guide device includes a spherical guide head, a cleaning brush, a guide probe A, a guide probe B, a fixing ring, an externally threaded locking sleeve and an internally threaded locking sleeve, a fixing ring is provided at the front end of the externally threaded locking sleeve, the externally threaded locking sleeve and the fixing ring are sleeved on the circular outer part of the welding probe, the circular outer part of the externally threaded locking sleeve is sleeved with an internally threaded locking sleeve, a guide probe B is provided on the outer wall of the front end of the upper side of the fixing ring, a guide probe A is provided on the outer wall of the front end of the lower side of the fixing ring, a cleaning brush is provided at the front end of the guide probe B, and a spherical guide head is provided at the front end of the guide probe A.

[0007] Preferably, a cooling host is provided at the rear end of the laser welding host, a display is provided on the rear end outer wall of the cooling host, and a trigger button is penetrated through the front end outer wall of the cooling host near the lower side.

[0008] Preferably, an operating handle is provided at the lower end of the cooling main unit, an electrical connection sleeve is provided at the lower end of the operating handle, and an anti-slip coating is sprayed on the circular outer wall of the operating handle.

[0009] Preferably, a liquid crystal display screen is embedded inside the rear end outer wall of the display, a transparent protective film is pasted on the rear end outer wall of the liquid crystal display screen, and the display and the cooling host are fixedly connected by a plurality of buckles.

[0010] Preferably, the front end outer wall of the laser welding main unit is treated with an arc surface, and an air pipe joint is also provided on the outer wall of the laser welding main unit near the front lower end.

[0011] Preferably, the guide probe A and the guide probe B have the same length, and neither the guide probe A nor the guide probe B contacts the outer wall of the welding probe.

[0012] Compared with the prior art, the utility model provides a laser welding head that is easy to operate and has the following beneficial effects:

[0013] The utility model adds a novel welding guide device to the outside of the welding probe rod of the laser welding head. The welding guide device can replace the welding nozzle and contact the welding position after adjustment. This can avoid the welding nozzle from frequently contacting the welding position during welding and causing excessive wear. The welding guide device not only protects the welding nozzle but also guides it, so that the welding nozzle can move more stably along the welding trajectory and complete the welding operation. In the process of guiding, dust and dirt in the unwelded area can be cleaned away, thereby increasing the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of a laser welding head structure that is easy to operate.

[0015] Figure 2 This is a schematic structural diagram of the welding guide device of the utility model.

[0016] In the figure: 1. Electrical connector; 2. Operating handle; 3. Trigger button; 4. Display; 5. Cooling host; 6. Protective window knob; 7. Laser welding host; 8. Connector; 9. Welding guide device; 10. Welding probe rod; 11. Welding nozzle; 12. Spherical guide head; 13. Cleaning brush; 14. Guide probe rod A; 15. Guide probe rod B; 16. Fixing ring; 17. External thread locking sleeve; 18. Internal thread locking sleeve. DETAILED DESCRIPTION

[0017] 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.

[0018] The utility model provides Figure 1-2A laser welding head that is easy to operate is shown, comprising a laser welding main unit 7 and a connecting head 8, the connecting head 8 is installed at the front end of the laser welding main unit 7, a welding probe rod 10 is arranged at the front end of the connecting head 8, a protective window knob 6 is arranged on the outer wall of the upper end near the front side of the laser welding main unit 7, a welding nozzle 11 is arranged at the front end of the welding probe rod 10, a welding guide device 9 is sleeved on the outside of the welding probe rod 10, the outer wall of the front end of the laser welding main unit 7 is treated with an arc surface, an air pipe joint is also arranged on the outer wall of the lower end near the front side of the laser welding main unit 7, a cooling main unit 5 is arranged at the rear end of the laser welding main unit 7, a display 4 is arranged on the outer wall of the rear end of the cooling main unit 5, and a trigger button 3 is penetrated on the outer wall of the front end near the lower side of the cooling main unit 5. After the trigger button 3 is pressed, the laser welding main unit 7 will be in a working state, so that the laser welding operation can be completed on the welding point through the welding nozzle 11.

[0019] like Figure 1 and Figure 2 As shown, the welding guide device 9 includes a spherical guide head 12, a cleaning brush 13, a guide probe rod A14, a guide probe rod B15, a fixing ring 16, an external thread locking sleeve 17 and an internal thread locking sleeve 18. The front end of the external thread locking sleeve 17 is provided with a fixing ring 16. The external thread locking sleeve 17 and the fixing ring 16 are sleeved on the circular outer part of the welding probe rod 10. The circular outer part of the external thread locking sleeve 17 is sleeved with the internal thread locking sleeve 18. The guide probe rod B15 is provided on the front end outer wall of the upper side of the fixing ring 16, and the guide probe rod A14 is provided on the front end outer wall of the lower side of the fixing ring 16. The front end of the guide probe rod B15 is provided with a cleaning brush 13, and the front end of the guide probe rod A14 is provided with a spherical guide head 12. The guide probe rods A14 and B15 have the same length, and the guide probe rods A14 and B15 do not contact the outer wall of the welding probe rod 10. When using the welding guide device 9, first First, it is necessary to loosen the internal thread locking sleeve 18 outside the external thread locking sleeve 17 so that the internal thread locking sleeve 18 unlocks the external thread locking sleeve 17, and then move the fixing ring 16 and the external thread locking sleeve 17 outside the welding probe rod 10 forward and backward so that the spherical guide head 12 and the cleaning brush 13 at the front end of the guide probe rod A14 and the guide probe rod B15 are in the best guiding position, and then maintain this state and retighten the internal thread locking sleeve 18. After the internal thread locking sleeve 18 is tightened, it will lock the external thread locking sleeve 17, thereby locking the welding guide device 9 in the currently adjusted position. When using a laser welding head, the spherical guide head 12 and the cleaning brush 13 will replace the welding nozzle 11 to contact the welding position, thereby avoiding the welding nozzle 11 from directly contacting the welding position for a long time and causing wear, thereby increasing the protection effect of the welding nozzle 11.

[0020] like Figure 1As shown, an operating handle 2 is provided at the lower end of the cooling main unit 5, and an electrical connector 1 is provided at the lower end of the operating handle 2. An anti-slip coating is sprayed on the circular outer wall of the operating handle 2. Because the laser welding head is handheld, it is necessary to hold the operating handle 2 to operate the laser welding head when in use, and the anti-slip coating on the outer wall of the operating handle 2 can increase the friction between the palm skin, thereby helping the user to hold the operating handle 2 more firmly and stably to use the laser welding head.

[0021] like Figure 1 As shown, a liquid crystal display screen is embedded inside the rear end outer wall of the display 4, a transparent protective film is pasted on the rear end outer wall of the liquid crystal display screen, the display 4 and the cooling host 5 are fixedly connected by multiple buckles, the display 4 is detachable and can be quickly disassembled and replaced when damaged, and the transparent protective film can prevent the liquid crystal display screen of the display 4 from being scratched by foreign objects, thereby increasing the protection effect of the liquid crystal display screen.

[0022] Working principle of the utility model: when using the laser welding head, firstly, the welding nozzle 11 needs to be installed to the front end of the welding probe rod 10, and then the electrical connector 1 at the bottom of the operating handle 2 needs to be connected to the external power supply wire of the laser welding, so that when the laser welding head is working, the external power supply device can stably supply the laser welding, and then the laser welding head can be used normally. When using it, the user needs to hold the operating handle 2 with the palm of his hand, and the index finger needs to be placed on the trigger button 3 inside the outer wall of the lower front end of the cooling host 5, and then adjust the laser welding intensity by rotating the protective window knob 6, and the data will be displayed on the display 4 during adjustment. It is displayed when the time comes, so that the user can accurately adjust the welding strength and welding mode of the laser welding head, and then it is necessary to prepare for the welding operation. During welding, the welding nozzle 11 at the front end of the welding probe 10 needs to be close to the welding position until the welding nozzle 11 reaches the optimal welding position, and then it is necessary to maintain this state and press the trigger button 3 with the index finger. At this time, the laser welding host 7 will start to work, thereby generating a high-temperature melting effect on the welding point through the welding nozzle 11, so that the welding point is laser welded. After the welding is completed, release the pressed trigger button 3, and then remove the laser welding head and place it.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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. A laser welding head that is easy to operate, comprising a laser welding main unit (7) and a connecting head (8), the connecting head (8) being located at the front end of the laser welding main unit (7), and a welding probe (10) being located at the front end of the connecting head (8), characterized in that: The laser welding main machine (7) is provided with a protective window knob (6) on the outer wall near the front upper end, the front end of the welding probe rod (10) is provided with a welding nozzle (11), and the outside of the welding probe rod (10) is sleeved with a welding guide device (9); The welding guide device (9) comprises a spherical guide head (12), a cleaning brush (13), a guide probe rod A (14), a guide probe rod B (15), a fixing ring (16), an external thread locking sleeve (17) and an internal thread locking sleeve (18); the front end of the external thread locking sleeve (17) is provided with a fixing ring (16); the external thread locking sleeve (17) and the fixing ring (16) are sleeved on the circular outer part of the welding probe rod (10); the circular outer part of the external thread locking sleeve (17) is sleeved with the internal thread locking sleeve (18); the guide probe rod B (15) is provided on the front end outer wall of the upper side of the fixing ring (16); the guide probe rod A (14) is provided on the front end outer wall of the lower side of the fixing ring (16); the front end of the guide probe rod B (15) is provided with a cleaning brush (13); and the front end of the guide probe rod A (14) is provided with a spherical guide head (12).

2. The laser welding head that is easy to operate according to claim 1 is characterized in that: A cooling main unit (5) is arranged at the rear end of the laser welding main unit (7), a display (4) is arranged on the rear end outer wall of the cooling main unit (5), and a trigger button (3) is penetrated through the front end outer wall of the cooling main unit (5) near the lower side.

3. The laser welding head that is easy to operate according to claim 2 is characterized in that: An operating handle (2) is arranged at the lower end of the cooling main unit (5), an electrical connection sleeve (1) is arranged at the lower end of the operating handle (2), and an anti-slip coating is sprayed on the circular outer wall of the operating handle (2).

4. The laser welding head that is easy to operate according to claim 2 is characterized in that: A liquid crystal display screen is embedded inside the rear end outer wall of the display (4), a transparent protective film is adhered to the rear end outer wall of the liquid crystal display screen, and the display (4) and the cooling host (5) are fixedly connected via a plurality of buckles.

5. The laser welding head that is easy to operate according to claim 1 is characterized in that: The front end outer wall of the laser welding main machine (7) is processed with an arc surface, and an air pipe joint is also arranged on the outer wall of the laser welding main machine (7) near the front lower end.

6. The laser welding head that is easy to operate according to claim 1 is characterized in that: The guide probe rod A (14) and the guide probe rod B (15) have the same length, and neither the guide probe rod A (14) nor the guide probe rod B (15) contacts the outer wall of the welding probe rod (10).

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