A welding head with lens temperature detection function

Abstract

The utility model relates to laser welding technical field discloses a welding head with lens temperature detection function, including welding head body, the welding head body top one side is equipped with the plug, the welding head body bottom is equipped with the welding mouth, the welding head body includes the temperature detection mechanism for detecting temperature, the utility model discloses through the setting of temperature detection mechanism, before welding, infrared sensor judges whether the lens is in normal temperature standby state quickly, avoids the initial temperature exception of lens to influence the welding quality, in the welding, K type thermocouple real -time tracking lens high temperature change, infrared thermal imager module generates heat map and positions local high temperature point, prevents the local overheating and leads to the lens cracking, after welding, NTC thermistor accurate detection lens final temperature after cooling down, ensures the stable performance of lens, thereby can realize the whole cycle temperature management and control of 'before welding - in the welding - after welding'.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a welding head with lens temperature detection function. Background Technology

[0002] Welding heads with lens temperature detection are advanced welding equipment. By monitoring the lens temperature in real time, they can monitor the temperature changes of the collimator and welding protective lens during the welding process, allowing operators to understand the working status of the lens at any time. This can effectively improve welding quality and equipment stability, and meet the high-precision welding needs in different scenarios.

[0003] In terms of temperature control, traditional welding heads generally lack the ability to accurately monitor the temperature of the lens throughout its entire lifecycle. Before welding, if the initial temperature of the lens is abnormal, it can easily cause the weld layer to not bond tightly, resulting in defects such as bubbles and cracks. During welding, local areas of the lens are prone to overheating due to concentrated heat. Traditional detection methods mostly rely on single-point temperature measurement or manual observation, which makes it difficult to capture the temperature distribution across the entire area in real time. This leads to frequent problems such as lens cracking and optical performance degradation caused by local overheating. After welding, the lack of temperature monitoring during the lens cooling process makes it impossible to ensure that the final temperature is stable within the range that meets performance requirements, thereby affecting the subsequent assembly accuracy and product reliability. Based on this, a welding head with lens temperature detection function is proposed for improvement. Utility Model Content

[0004] Given that the traditional welding head cannot achieve accurate temperature monitoring throughout the entire process of lens welding (before, during, and after), and that different quality and reliability issues arise at each stage due to the lack of temperature control, this utility model is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a welding head with lens temperature detection function, comprising a welding head body, a plug on one side of the top of the welding head body, a welding nozzle at the bottom of the welding head body, and a temperature detection mechanism for detecting temperature. A connecting seat is fixedly connected to one side of the middle part of the welding head body. A housing is fixedly connected to one side of the connecting seat by bolts. A knob is rotatably connected to the middle of the housing. A rotating column is fixedly sleeved inside the knob. The bottom end of the rotating column passes through the bottom wall of the housing and is fixedly connected to a detection module. The bottom end of the detection module is respectively provided with an infrared sensor, an infrared thermal imager module, an NTC thermistor, and a K-type thermocouple.

[0006] As a preferred embodiment, the top of the welding head body is fixedly mounted with a mounting base by bolts, an adjustment mechanism is provided on one side of the mounting base, a fixing base is fixedly connected to one side of the bottom of the mounting base, a sliding groove is provided on one side of the fixing base, and a groove is provided in the middle of the fixing base.

[0007] As a preferred embodiment, the inner wall of the groove is rotatably connected to a connecting block, one end of the connecting block is provided with a camera, the inner wall of the slide is slidably connected to a slide rod, one end of the slide rod is fixedly connected to a limiting gear, one end of the connecting block's rotating shaft is provided with a toothed groove adapted to the limiting gear, a spring is sleeved on the surface of the limiting gear, both ends of the spring are respectively connected to one side of the limiting gear and the inner wall of the slide, and the other end of the limiting gear is connected to a pull ring through a limiting plate.

[0008] As a preferred embodiment, the welding head body is provided with symmetrical liquid inlet connectors on one side of the top and liquid return connectors on one side of the bottom.

[0009] As a preferred embodiment, a first inspection plate is fitted into a groove on one side of the top of the welding head body, and the first inspection plate is threadedly connected to the welding head body by a first bolt.

[0010] As a preferred embodiment, a second inspection plate is fitted into a groove on one side of the bottom of the welding head body, and the second inspection plate is threadedly connected to the welding head body by a second bolt.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model, through the setting of a temperature detection mechanism, allows infrared sensors to quickly determine whether the lens is in a normal temperature standby state before welding, avoiding the impact of abnormal initial lens temperature on welding quality. During welding, K-type thermocouples track the high temperature changes of the lens in real time, and infrared thermal imaging modules generate thermal images to locate local high temperature points, preventing local overheating that could cause the lens to crack. After welding, NTC thermistors accurately detect the final temperature of the lens after cooling, ensuring stable lens performance. Thus, it can achieve full-cycle temperature control from "before welding to during welding to after welding".

[0012] 2. This utility model uses a camera to collect image information of the welding area in real time, forming a dual monitoring system that combines vision and temperature with the temperature detection mechanism. This further expands the intelligent function of the welding head and provides more comprehensive data support for welding quality control. Through the design of the adjustment mechanism, unlocking and locking can be completed by simply pulling the pull ring without the need for tools. The camera angle can be quickly adjusted, which greatly improves the efficiency of production changeover and meets the needs of rapid adjustment in welding operations.

[0013] 2. This utility model forms a complete liquid circulation path through the inlet and outlet connectors, enabling coolant to enter from the top and exit from the bottom. This allows for precise control of the overall temperature of the welding head body, ensuring stable welding processes. Furthermore, operators only need to unscrew the first and second bolts to remove the first and second inspection plates, directly accessing internal components for inspection or replacement without disassembling the entire welding head, thus reducing maintenance time and production line downtime losses. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one side of the structure of this utility model; Figure 2 This is a schematic diagram of the other side of the structure of this utility model; Figure 3 This is an enlarged structural schematic diagram of the adjustment mechanism in this utility model; Figure 4 This is a cross-sectional structural diagram of the adjustment mechanism in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Welding head body; 11. Welding nozzle; 12. Plug; 13. First inspection plate; 14. First bolt; 15. Second inspection plate; 16. Second bolt; 2. Temperature detection mechanism; 21. Connecting seat; 22. Housing; 23. Knob; 24. Rotating column; 25. Detection module; 26. Infrared sensor; 27. Infrared thermal imager module; 28. NTC thermistor; 29. ​​K-type thermocouple; 3. Mounting base; 4. Liquid inlet connector; 41. Liquid return connector; 5. Adjustment mechanism; 51. Fixed base; 52. Slide groove; 53. Groove; 54. Connecting block; 541. Toothed groove; 55. Pull ring; 56. Limiting plate; 57. Slide rod; 58. Limiting gear; 59. Spring; 6. Camera. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a welding head with lens temperature detection function, including a welding head body 1, a plug 12 on one side of the top of the welding head body 1, a welding nozzle 11 at the bottom of the welding head body 1, and a temperature detection mechanism 2 for detecting temperature. A connecting seat 21 is fixedly connected to one side of the middle of the welding head body 1. A housing 22 is fixedly connected to one side of the connecting seat 21 by bolts. A knob 23 is rotatably connected to the middle of the housing 22. A rotating column 24 is fixedly sleeved inside the knob 23. The bottom end of the rotating column 24 passes through the bottom wall of the housing 22 and is fixedly connected to a detection module 25. The bottom end of the detection module 25 is respectively provided with an infrared sensor 26, an infrared thermal imager module 27, an NTC thermistor 28, and a K-type thermocouple 29.

[0018] Specifically, plug 12 is used to connect to an external power source. The power is delivered to the internal circuit of the welding head body 1 through plug 12, which simultaneously powers the heating module of the welding nozzle 11 and the temperature detection mechanism 2. According to the position of the lens to be tested, such as the edge, center or tilt angle of the lens, the operator manually rotates the knob 23 in the middle of the housing 22. The knob 23 drives the detection module 25 to rotate through the rotating column 24, so that the infrared sensor 26, infrared thermal imager module 27 and other components at the bottom of the module are aligned with the area of ​​the lens to be tested. When the knob 23 is stopped, the detection angle is fixed and the temperature detection stage can be entered. Infrared sensor 26 can quickly obtain the preliminary temperature value of the lens surface by receiving infrared radiation from the lens surface, and determine whether the lens is in a normal temperature standby state; infrared thermal imager module 27 can generate a temperature distribution heat map, displaying local high temperature points of the lens, avoiding lens cracking due to local overheating, and also helping to determine whether the welding heat is evenly conducted; NTC thermistor 28 can calculate the high-precision temperature of the lens by detecting its resistance change, eliminating errors caused by environmental interference; K-type thermocouple 29 can monitor the high temperature change of the lens in real time during the welding process by detecting the thermoelectric potential value; This design, through the setting of temperature detection mechanism 2, allows infrared sensor 26 to quickly determine whether the lens is in a normal temperature standby state before welding, avoiding abnormal initial lens temperature from affecting welding quality. During welding, K-type thermocouple 29 tracks the high temperature change of the lens in real time, and infrared thermal imager module 27 generates thermal image to locate local high temperature points, preventing local overheating from causing lens cracking. After welding, NTC thermistor 28 accurately detects the final temperature of the lens after cooling, ensuring stable lens performance, thus enabling full-cycle temperature control "before welding - during welding - after welding".

[0019] Reference Figures 1-4 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that: the top of the welding head body 1 is fixedly installed with a mounting base 3 by bolts, the mounting base 3 is provided with an adjustment mechanism 5 on one side, the bottom end of the mounting base 3 is fixedly connected with a fixing base 51, the fixing base 51 is provided with a sliding groove 52 on one side, and the fixing base 51 is provided with a groove 53 in the middle. A connecting block 54 is rotatably connected to the inner wall of the groove 53. A camera 6 is provided at one end of the connecting block 54. A sliding rod 57 is slidably connected to the inner wall of the slide groove 52. A limiting gear 58 is fixedly connected to one end of the sliding rod 57. A toothed groove 541 adapted to the limiting gear 58 is opened at one end of the rotating shaft of the connecting block 54. A spring 59 is sleeved on the surface of the limiting gear 58. The two ends of the spring 59 are respectively connected to one side of the limiting gear 58 and the inner wall of the slide groove 52. A pull ring 55 is connected to the other end of the limiting gear 58 through a limiting plate 56.

[0020] Specifically, the operator pulls the pull ring 55 outward, which drives the slide rod 57 to slide outward along the slide groove 52 through the limit plate 56. At this time, the limit gear 58 moves synchronously with the slide rod 57 and disengages from the tooth groove 541 of the connecting block 54. The spring 59 is compressed and stored, and the connecting block 54 enters a rotatable state. Next, rotate the connecting block 54 to adjust the orientation of the camera 6 to align with the welding area or the lens to be inspected until the camera 6 obtains a clear field of view, thereby achieving flexible adjustment at multiple angles. The camera 6 can collect image information of the welding area in real time, forming a dual monitoring system combining vision and temperature with the temperature detection mechanism 2. This design uses camera 6 to collect real-time image information of the welding area, forming a dual monitoring system combining vision and temperature with temperature detection mechanism 2. This further expands the intelligent functions of the welding head and provides more comprehensive data support for welding quality control. Through the design of adjustment mechanism 5, unlocking and locking can be completed by simply pulling the pull ring 55 without the need for tools. The angle of camera 6 can be quickly adjusted, which greatly improves changeover efficiency and meets the needs of rapid adjustment in welding operations.

[0021] Reference Figures 1-4 This is the third embodiment of the present utility model. The difference between this embodiment and the second embodiment is that: the top side of the welding head body 1 is symmetrically provided with liquid inlet connectors 4, and the bottom side of the welding head body 1 is symmetrically provided with liquid return connectors 41. A first inspection plate 13 is fitted into a groove on one side of the top of the welding head body 1. The first inspection plate 13 is threadedly connected to the welding head body 1 by a first bolt 14. A second inspection plate 15 is fitted into a groove on one side of the bottom of the welding head body 1. The second inspection plate 15 is threadedly connected to the welding head body 1 by a second bolt 16.

[0022] Specifically, the inlet connector 4 and the return connector 41 form a complete liquid circulation path, enabling the coolant to enter from the top and exit from the bottom, which can precisely control the overall temperature of the welding head body 1 and ensure the stability of the welding process. Operators only need to unscrew the first bolt 14 and the second bolt 16 to remove the first inspection plate 13 and the second inspection plate 15, and directly access the internal components for inspection or replacement. This eliminates the need to disassemble the entire welding head, reducing maintenance time and production line downtime losses.

[0023] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A welding head with lens temperature detection function, comprising a welding head body (1), characterized in that: The welding head body (1) has a plug (12) on one side of the top and a welding nozzle (11) at the bottom. The welding head body (1) includes a temperature detection mechanism (2) for detecting temperature. A connecting seat (21) is fixedly connected to one side of the middle part of the welding head body (1). A housing (22) is fixedly connected to one side of the connecting seat (21) by bolts. A knob (23) is rotatably connected to the middle part of the housing (22). A rotating column (24) is fixedly sleeved inside the knob (23). The bottom end of the rotating column (24) passes through the bottom wall of the housing (22) and is fixedly connected to a detection module (25). The bottom end of the detection module (25) is respectively provided with an infrared sensor (26), an infrared thermal imager module (27), an NTC thermistor (28), and a K-type thermocouple (29).

2. The welding head with lens temperature detection function according to claim 1, characterized in that: The top of the welding head body (1) is fixedly mounted with a mounting base (3) by bolts. An adjustment mechanism (5) is provided on one side of the mounting base (3). A fixing base (51) is fixedly connected to one side of the bottom of the mounting base (3). A sliding groove (52) is provided on one side of the fixing base (51). A groove (53) is provided in the middle of the fixing base (51).

3. A welding head with lens temperature detection function according to claim 2, characterized in that: The inner wall of the groove (53) is rotatably connected to a connecting block (54). One end of the connecting block (54) is provided with a camera (6). The inner wall of the slide groove (52) is slidably connected to a slide rod (57). One end of the slide rod (57) is fixedly connected to a limiting gear (58). One end of the shaft of the connecting block (54) is provided with a tooth groove (541) that matches the limiting gear (58). A spring (59) is sleeved on the surface of the limiting gear (58). The two ends of the spring (59) are respectively connected to one side of the limiting gear (58) and the inner wall of the slide groove (52). The other end of the limiting gear (58) is connected to a pull ring (55) through a limiting plate (56).

4. A welding head with lens temperature detection function according to claim 1, characterized in that: The welding head body (1) is symmetrically provided with a liquid inlet connector (4) on one side of the top and a liquid return connector (41) on one side of the bottom.

5. A welding head with lens temperature detection function according to claim 1, characterized in that: The first inspection plate (13) is fitted into a groove on one side of the top of the welding head body (1). The first inspection plate (13) is threadedly connected to the welding head body (1) by a first bolt (14).

6. A welding head with lens temperature detection function according to claim 1, characterized in that: The second inspection plate (15) is fitted into a groove on one side of the bottom of the welding head body (1). The second inspection plate (15) is threadedly connected to the welding head body (1) by a second bolt (16).

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