CN118789101B - A fiber optic welding head with temperature monitoring - Google Patents
A fiber optic welding head with temperature monitoring Download PDFInfo
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- CN118789101B CN118789101B CN202411268630.7A CN202411268630A CN118789101B CN 118789101 B CN118789101 B CN 118789101B CN 202411268630 A CN202411268630 A CN 202411268630A CN 118789101 B CN118789101 B CN 118789101B
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Abstract
The invention relates to the technical field of laser welding, in particular to an optical fiber welding head with temperature monitoring, which comprises a connecting part, a first limiting frame coaxially screwed with the connecting part and a follow-up adjusting module coaxially arranged on the first limiting frame, wherein the connecting part is coaxially and fixedly arranged at a welding end of the welding head, the follow-up adjusting module is also provided with a contact ring continuously contacted with a welding plane, the contact ring can be adjusted in a follow-up manner in the process of continuously contacting with the welding plane and is always horizontally arranged with the welding plane, and the temperature monitoring module is coaxially arranged at the adjusting end of the follow-up adjusting module and is used for respectively measuring the temperature of welding spots in real time.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to an optical fiber welding head with temperature monitoring.
Background
Laser welding is a high-efficiency precise welding method which uses a laser beam with high energy density as a heat source, is one of important aspects of application of laser material processing technology, and is used for melting a workpiece to form a specific molten pool by controlling parameters such as the width, the energy, the peak power, the repetition frequency and the like of laser pulse;
the temperature monitoring is a key for ensuring the welding quality and the stable operation of the equipment in the process of welding the optical fiber welding head, the temperature of a welding area directly influences the formation of a molten pool and the quality of a welding line in the process of welding the parts, the temperature of the molten pool can be ensured to be kept in an optimal range through real-time monitoring, welding defects such as air holes and cracks caused by overhigh temperature or insufficient molten pool and unstable welding line caused by overhigh temperature are avoided, the optical fiber welding head can generate a large amount of heat under the action of a high-energy laser beam, the welding head and the optical fiber, a focusing lens group and other parts are possibly damaged due to overheating, the temperature of the welding head can be timely detected and regulated through real-time temperature monitoring, the service life of the equipment is prolonged, and the welding defects caused by abnormal temperature can be greatly reduced through real-time monitoring and regulation of the welding temperature, and the rework rate and the production cost are reduced;
However, in the prior art, the temperature control detection means of the optical fiber welding head is relatively single, and most of the temperature control detection means are used for detecting the internal equipment, such as the protection lens in real time, and the corresponding welding point is not detected in real time, so that the temperature of the welding point and the temperature of the welding head of the part can not be monitored in real time when the part is welded, and the purposes of monitoring the quality of the welding point in real time and flexibly adjusting can not be realized.
Disclosure of Invention
According to the optical fiber welding head with the temperature monitoring function, the equipment capable of monitoring the welding spots and the welding head in real time is provided, so that the technical problem that the temperature control detection equipment in the prior art cannot monitor the welding spots and the welding head in real time, and accordingly cannot be found and adjusted even when defects such as air holes and cracks and the welding head are overheated in the subsequent welding process is solved.
The invention provides an optical fiber welding head with temperature monitoring, which comprises a connecting part, a first limiting frame coaxially screwed with the connecting part and a follow-up adjusting module coaxially arranged on the first limiting frame, wherein the connecting part is coaxially and fixedly arranged at a welding end of the welding head, the follow-up adjusting module is also provided with a contact ring continuously contacted with a welding plane, the contact ring can be adjusted in a follow-up manner in the process of continuously contacting with the welding plane and is always horizontally arranged with the welding plane, and the temperature monitoring module is coaxially arranged at the adjusting end of the follow-up adjusting module and is used for respectively measuring the temperature of welding spots in real time.
Preferably, the temperature monitoring module comprises a connecting ring, a first monitoring unit and a second monitoring unit which are embedded in the connecting ring, wherein the detection ends of the first monitoring unit and the second monitoring unit are arranged towards the axis direction of the welding head.
Preferably, the first monitoring unit is an infrared temperature sensor.
Preferably, the middle part of the connecting ring is also coaxially embedded with a protecting ring.
Preferably, the material of the guard ring is platinum-rhodium alloy.
Preferably, the detection end of the first monitoring unit is obliquely arranged towards the welding end of the welding head.
Preferably, the lower surface of the contact ring is also embedded with balls, and a plurality of groups of balls are circumferentially arranged along the axis of the contact ring.
The follow-up adjusting module comprises a telescopic frame and a universal adjusting unit, wherein the telescopic frame can axially approach or depart from the first limiting frame, the universal adjusting unit is arranged at the far end of the telescopic frame, the telescopic frame is composed of a fixed ring and adjusting rods which are vertically arranged outside the fixed ring, a plurality of groups of adjusting rods are circumferentially arranged along the axis of the fixed ring, the rod bodies of the groups of adjusting rods penetrate through the first limiting frame and are in sliding fit with the first limiting frame, and the adjusting rods can automatically slide and adjust the required positions according to detection requirements through locking knobs which are vertically arranged on one side of an extending part of the first limiting frame in a threaded connection mode.
Preferably, the universal adjusting unit comprises a limiting ring sleeve and a follow-up ring concentrically and slidably arranged in the limiting ring sleeve, a second limiting frame is coaxially arranged in the follow-up ring and is close to the lower end of the follow-up ring, and the contact ring is coaxially and fixedly arranged at the lower end of the follow-up ring.
Preferably, a controller capable of displaying the detected temperature in real time is further arranged outside the welding head.
Compared with the prior art, the invention has the beneficial effects that:
The invention realizes the effect of continuously attaching with the welding plane of the part to be welded through the follow-up adjusting module, ensures that the temperature monitoring module is always horizontally arranged, simultaneously cooperates with the first monitoring unit and the second monitoring unit to respectively detect the welding joint and the welding spot in real time, realizes the effect of detecting the welding spot and the temperature of the welding joint in real time while monitoring the precision in real time, and is beneficial to real-time adjustment and analysis of the welding joint according to monitoring data.
Drawings
FIG. 1 is a perspective view of a fiber optic splice joint with temperature monitoring.
FIG. 2 is a side view of a fiber optic weld head with temperature monitoring.
Figure 3 is a cross-sectional view taken at A-A of figure 2.
Fig. 4 is a partial enlarged view at B of fig. 3.
FIG. 5 is a top view of a portion of the structure of a fiber optic splice head with temperature monitoring.
Fig. 6 is a cross-sectional perspective view at C-C of fig. 5.
FIG. 7 is an exploded perspective view of a fiber optic splice head with temperature monitoring.
FIG. 8 is an exploded perspective view of a portion of a follower regulation module and a temperature monitoring module in a fiber optic splice head with temperature monitoring.
The reference numerals in the figures are:
1. A connection part;
2. A first limiting frame;
3. The device comprises a follow-up adjusting module, 31, a contact ring, 311, balls, 32, a telescopic frame, 321, a fixed ring, 322, an adjusting rod, 323, an extension part, 324, a locking bolt, 33, a universal adjusting unit, 331, a limiting ring sleeve, 332, a follow-up ring, 333 and a second limiting frame;
4. The device comprises a temperature monitoring module, 41 parts of connecting rings, 411 parts of outer ring bodies, 412 parts of inner ring bodies, 413 parts of gaps, 42 parts of first monitoring units, 43 parts of second monitoring units, 44 parts of protective rings;
5. The welding head, 51, the controller, 52 and the lamp bead.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1 to 8, the optical fiber welding head with temperature monitoring comprises a connecting part 1, a first limiting frame 2 coaxially screwed with the connecting part 1 and a follow-up adjusting module 3 coaxially arranged on the first limiting frame 2, wherein the connecting part 1 is coaxially and fixedly arranged at the welding end of the welding head 5, the follow-up adjusting module 3 is further provided with a contact ring 31 continuously contacted with a welding plane, the contact ring 31 can be adjusted in a follow-up manner in the continuous contact process with the welding plane and is always horizontally arranged with the welding plane, and the temperature monitoring module 4 is coaxially arranged at the adjusting end of the follow-up adjusting module 3 and is used for respectively measuring the temperature of welding spots in real time.
The connecting part 1 is coaxially and detachably arranged at the welding end of the welding head 5;
When the temperature of the welding joint 5 is required to be detected, a worker firstly coaxially and fixedly sets a connecting body at the welding end of the welding joint 5 and sequentially installs the first limiting frame 2, the follow-up adjusting module 3 and the temperature monitoring module 4, wherein the installation length of the modules is shorter than the welding end of the welding joint 5;
Because the follow-up adjusting module 3 is further provided with the contact ring 31 which can continuously contact with the welding plane, when the welding head 5 is operated to weld the parts, the contact ring 31 can continuously adjust the adjusting end of the follow-up adjusting module 3 according to the swinging angle of the welding head 5 in the continuous contact process with the welding plane, so that the temperature monitoring module 4 coaxially arranged at the adjusting end of the follow-up adjusting module 3 is always kept in a horizontal state, and the temperature of the welding spot of the welding head 5 in a working state is accurately monitored.
Referring to fig. 8, the temperature monitoring module 4 comprises a connecting ring 41, and a first monitoring unit 42 and a second monitoring unit 43 which are embedded in the connecting ring 41, wherein the detection ends of the first monitoring unit 42 and the second monitoring unit 43 are arranged towards the axis direction of the welding head 5.
The second monitoring unit 43 and the first monitoring unit 42 have the same structure, and at least two groups of the first monitoring unit 42 and the second monitoring unit 43 are circumferentially arranged along the axis of the connecting ring 41;
The connecting ring 41 comprises an outer ring body 411, an inner ring body 412 and a connecting column for connecting the outer ring body 411 and the inner ring body 412, wherein a plurality of groups of gaps 413 are formed in the front of the connecting column, and the first monitoring unit 42 and the second monitoring unit 43 are respectively embedded in the gaps 413;
When the welding head 5 welds between the parts, because the first monitoring unit 42 and the second monitoring unit 43 are both arranged towards the welding end of the welding head 5, when the welding end of the part is melted by the welding beam emitted by the welding end of the welding head 5, the temperature generated by the welding spot can be synchronously detected and recorded in real time through the first monitoring unit 42 and the second monitoring unit 43, so that the temperature change of the welding spot of the welding head 5 during the welding of the parts is analyzed through the recorded data.
Referring to fig. 8, the first monitoring unit 42 is an infrared temperature sensor.
The temperature can be determined by measuring infrared rays radiated by an object through the infrared temperature sensor, when the infrared sensor is used, the infrared sensor does not need to be in physical contact with a heat source, so that the temperature can be measured remotely, temperature data can be obtained in real time by only aligning a probe of the infrared sensor with the heat source, and the data is transmitted to a far point through the signal transmission system.
Referring to fig. 7 and 8, a guard ring 44 is coaxially and embedded in the middle of the connecting ring 41.
The guard ring 44 is used for protecting the monitoring end of the monitoring unit, the temperature of the welding spot can reach thousands of degrees celsius at most in the welding process of the part through the welding head 5, the sensor is too close to the sensor and can be subjected to intense heat radiation, so that the sensor element is overheated and damaged, metal splashes and smoke dust generated in the welding process can cause physical damage to the near infrared sensor, so that the lens and the shell of the sensor are damaged, at the moment, the guard ring 44 is coaxially and embedded in the middle of the connecting ring 41 and used for protecting the monitoring end of the monitoring unit, so that the inaccuracy of the most detected data caused by the influence of metal splashes and the like on the detecting unit in the welding process can be effectively solved, the material of the guard ring 44 is preferably quartz glass, not limited to quartz glass, but also can be other materials such as silicon carbide and the like, and the quartz glass has good permeability in the infrared range of 200 nm-to 3.5 μm in a wide band, is very suitable for infrared detection, and the melting point of the quartz glass can be kept stable at high temperature at about 1650 ℃.
Referring to fig. 8, the guard ring 44 is made of platinum-rhodium alloy.
By adopting the platinum-rhodium alloy as the manufacturing material of the guard ring 44, the purpose of real-time and comprehensive absorption of heat energy generated when the welding head 5 welds the parts can be realized, and the purpose of real-time detection of the welding spot temperature is realized by matching with the first monitoring unit 42 and the second monitoring unit 43, the material of the guard ring 44 is not limited to the platinum-rhodium alloy and can be other materials, and the first monitoring unit 42 and the second monitoring unit 43 realize the temperature detection of a heat source at the welding spot by detecting the temperature change of the guard ring 44 in real time, and the internal diameter of the guard ring 44 is reduced to the greatest extent on the premise that the welding head 5 is not influenced by the normal welding of the welding end, so that the sufficient absorption of heat energy at the welding spot when the welding head 5 welds the parts is realized.
Referring to fig. 8, the detection end of the first monitoring unit 42 is disposed obliquely toward the welding end of the welding head 5.
The monitoring end of the second monitoring unit 43 is horizontally arranged towards the welding head 5;
The first monitoring unit 42 and the second monitoring unit 43 are respectively arranged towards the welding head 5 and the welding end of the welding head 5, so that the welding spots and the welding head 5 can be synchronously detected, the problems of welding spot defects such as air holes and cracks caused by overhigh temperature or insufficient molten pool and unstable welding seams caused by overhigh temperature and the damages of the welding head 5, optical fibers, a focusing lens group and other parts caused by overhigh temperature of the welding head 5 are respectively solved, the temperature of the welding head 5 can be timely detected and regulated through real-time temperature monitoring, the overheat phenomenon is prevented, and the service life of equipment is prolonged.
As shown in fig. 7 and 8, the lower surface of the contact ring 31 is further fitted with balls 311, and the balls 311 are provided with a plurality of groups along the axis circumference of the contact ring 31.
The balls 311 are used for directly contacting with the parts to be welded, and the continuous rolling between the balls and the parts is used for realizing the direct contact with the parts, reducing the friction force during contact and minimizing the welding resistance during the welding of the parts through the welding head 5.
Referring to fig. 4 and 6, the follow-up adjustment module 3 includes a telescopic frame 32 capable of axially approaching or separating from the first limiting frame 2 and a universal adjustment unit 33 disposed at a distal end of the telescopic frame 32, the telescopic frame 32 is composed of a fixed ring 321 and an adjustment rod 322 vertically disposed outside the fixed ring 321, the adjustment rod 322 is circumferentially provided with multiple groups of adjustment rods 322 along an axis of the fixed ring 321, the rods of the multiple groups of adjustment rods 322 are all disposed through the first limiting frame 2 and slidably engaged with the first limiting frame 2, and the adjustment rod 322 is capable of automatically sliding and adjusting a required position according to a detection requirement through a locking knob vertically disposed on one side of an extension 323 on the first limiting frame 2 in a threaded connection manner.
When the distance between the contact ring 31 and the welding plane needs to be adjusted, a worker only needs to rotate the locking knob to adjust the telescopic frame 32, and after the telescopic frame 32 is adjusted to a required position, the worker can screw the locking knob again to lock the telescopic frame 32, and as the universal adjusting unit 33 is fixedly arranged at the far end of the telescopic frame 32, the universal adjusting unit 33 can synchronously act when the telescopic frame 32 is adjusted, so that the distance between the contact ring 31 and the welding plane is adjusted.
Referring to fig. 4 and 8, the universal adjusting unit 33 includes a stop collar 331 and a follower ring 332 concentrically and slidably disposed in the stop collar 331, a second stop 333 is coaxially disposed in the follower ring 332, the second stop 333 is disposed near the lower end of the follower ring 332, and the contact ring 31 is coaxially and fixedly disposed at the lower end of the follower ring 332.
When the worker operates the welding head 5 to weld the parts, the contact ring 31 is in an abutting arrangement with the welding, and when the worker swings and tilts the welding head 5 according to the welding requirement, the second limiting frame 333 is rotationally connected with the limiting ring sleeve 331 through the follow-up ring 332, and the contact ring 31 can concentrically rotate in the limiting ring sleeve 331 under the abutting action of the parts, so that the contact ring 31 is always ensured to be in a horizontal state while the normal welding of the welding head 5 is not influenced, and further the detection precision of the welding head 5 and the welding spot during detection through the temperature monitoring module 4 in the welding process is ensured.
Referring to fig. 1, a controller 51 capable of displaying the detected temperature in real time is further provided outside the welding head 5.
The controller 51 is also provided with a lamp bead 52 for emitting alarm light at high temperature;
The controller 51 is configured to receive and display the detected temperature of the temperature monitoring module 4 in real time, so that a worker can conveniently see the temperature change and the amplitude of the welding spot in different time periods in real time.
The invention can monitor the welding joint and the welding head in real time and can follow the swinging follow-up action of the welding head, so that the normal welding work is not influenced while the real-time temperature monitoring of the welding joint and the welding spot is realized.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (8)
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| CN202411268630.7A CN118789101B (en) | 2024-09-11 | 2024-09-11 | A fiber optic welding head with temperature monitoring |
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| CN202411268630.7A CN118789101B (en) | 2024-09-11 | 2024-09-11 | A fiber optic welding head with temperature monitoring |
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| CN118789101B true CN118789101B (en) | 2024-12-03 |
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| CN119525704B (en) * | 2025-01-22 | 2025-04-18 | 深圳欧斯普瑞智能科技有限公司 | Laser cutting head with built-in nozzle temperature detection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112719699A (en) * | 2020-11-09 | 2021-04-30 | 荏原机械淄博有限公司 | Monitoring method of welding device |
| CN116086622A (en) * | 2022-08-16 | 2023-05-09 | 浙江海洋大学 | Real-time temperature detection device for arc additive manufacturing |
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| CN206047346U (en) * | 2016-08-31 | 2017-03-29 | 深圳市艾尔摩迪精密科技有限公司 | Based on laser welding weld point temperature real time monitoring apparatus |
| CN215902918U (en) * | 2021-10-20 | 2022-02-25 | 天津市捷威动力工业有限公司 | A device for monitoring the temperature during laser welding of tabs |
| CN117990215A (en) * | 2022-10-31 | 2024-05-07 | 富泰华工业（深圳）有限公司 | Temperature monitoring and temperature control method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719699A (en) * | 2020-11-09 | 2021-04-30 | 荏原机械淄博有限公司 | Monitoring method of welding device |
| CN116086622A (en) * | 2022-08-16 | 2023-05-09 | 浙江海洋大学 | Real-time temperature detection device for arc additive manufacturing |
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