Device for fine light spot temperature measurement and temperature control

Abstract

The utility model discloses a device for fine light spot temperature measurement and temperature control, which comprises a temperature measurement light beam emitting device, the output end of the temperature measurement light beam emitting device is fixedly connected with a second coupling module, the lower surface of the second coupling module is fixedly connected with a first coupling module, and the lower surface of the first coupling module is fixedly connected with a second coupling module. The bottom end of the first coupling module is fixedly connected with a combiner module, the side surface of the combiner module is fixedly connected with a mounting backboard module, the lower surface of the mounting backboard module is fixedly connected with a switching device, and the lower surface of the switching device is in threaded connection with a focusing device; the lower surface of the composite number module is fixedly connected with a laser beam angle adjusting module, and the lower surface of the laser beam angle adjusting module is fixedly connected with a laser optical fiber connecting device, so that temperature measurement and temperature control function display can be realized, and the temperature can be fed back in real time. The temperature of the material can be measured in the material heating process, and the material can be heated to the target temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing, in particular to a device for fine light spot temperature measurement and temperature control. Background Art

[0002] Laser heat treatment is a surface heat treatment technology, which uses laser to heat the surface of metal materials to achieve heat treatment. Laser heating has extremely high power density, that is, extremely high power is concentrated per unit area of ​​the laser irradiation area.

[0003] Due to the very high density of existing laser heating, the workpiece cannot transfer heat away in time through conduction and heat dissipation. As a result, the laser irradiation area of ​​the workpiece heats up rapidly, and rapid heating is achieved. There is an increasing demand to measure the current temperature and heat it to the target temperature after heating. For example, a Chinese patent discloses "a temperature detection and control device for a fiber laser processing head", and its application number is: "CN202120188411.3", which includes: a temperature sensor for real-time detection of the working temperature in the fiber laser processing head and conversion into a temperature signal; a control module electrically connected to the temperature sensor for processing and storing the temperature signal detected by the temperature sensor; a threshold adjustment module for inputting a temperature threshold into the control module. Due to the very high density of laser heating in the device, the workpiece cannot transfer heat away in time through conduction and heat dissipation. As a result, the laser irradiation area of ​​the workpiece heats up rapidly, and its applicability is relatively limited. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a device for fine spot temperature measurement and temperature control. The device can realize the display of temperature measurement and temperature control functions, and the temperature can be fed back in real time. It can measure the temperature of the material during the heating process and heat the material to the target temperature.

[0005] The utility model also provides a device for fine spot temperature measurement and temperature control, comprising: a temperature measuring light beam emitting device, wherein the output end of the temperature measuring light beam emitting device is fixedly connected with a second coupling module, the lower surface of the second coupling module is fixedly connected with a first coupling module, the bottom end of the first coupling module is fixedly connected with a composite module, the side surface of the composite module is fixedly connected with a mounting backplane module, the lower surface of the mounting backplane module is fixedly connected with a switching device, and the lower surface of the switching device is threadedly connected with a focusing device; through the mutual cooperation between the above parts, the temperature measurement and temperature control function display can be realized, and the temperature can be fed back in real time.

[0006] The lower surface of the composite module is fixedly connected with a laser beam angle adjustment module, and the lower surface of the laser beam angle adjustment module is fixedly connected with a laser fiber connection device. Through the mutual cooperation between the above parts, the temperature of the material can be measured during the heating process and the material can be heated to the target temperature.

[0007] According to the device for fine spot temperature measurement and temperature control described in the utility model, the laser fiber connection device includes: a temperature measuring laser head, and a laser beam interface is provided on the lower surface of the temperature measuring laser head. Through the mutual cooperation between the above parts, the laser beam angle module can adjust the angle of the incident laser beam.

[0008] According to the device for fine spot temperature measurement and temperature control described in the utility model, the temperature measurement light beam emitted by the temperature measurement light beam emitting device is incident on the focusing device through the reflector, and the adjustment of the first coupling module and the second coupling module makes the temperature measurement light beam coaxial with the laser beam. Through the mutual cooperation between the above parts, it is convenient to make the temperature measurement light beam coaxial with the laser beam.

[0009] According to the device for fine light spot temperature measurement and temperature control described in the utility model, the focusing device includes: focusing lenses, and the focusing lenses are copper lenses with multi-channel spiral water cooling structures, and are connected to water inlet pipes and water outlet pipes through lens seats. Through the mutual cooperation between the above parts, it is easy to replace different focusing lenses so that the light spot of the laser acting on the workpiece can present different shapes, thereby realizing different laser processing processes.

[0010] According to the device for fine spot temperature measurement and temperature control described in the utility model, the focusing lens of the focusing device is a parabolic focusing lens, an integrating lens or a double-focus lens. Through the mutual cooperation between the above parts, the reflected laser beam can be focused.

[0011] According to the device for fine spot temperature measurement and temperature control described in the utility model, the adapter is an adapter plate for transferring the mounting backplane module and the focusing device, and the adapter is fixedly connected to the mounting backplane module by screws. The mutual cooperation between the above parts facilitates installation and disassembly.

[0012] According to the device for fine spot temperature measurement and temperature control described in the utility model, the temperature measuring laser head is a contact linear displacement sensor, and the measuring end of the temperature measuring laser head is coaxial with the laser and at the focus of the laser. Through the mutual cooperation between the above parts, it is convenient to control the laser power to heat the material. When the measured temperature exceeds the target temperature, the laser power is reduced, and the whole process is closed-loop controlled through PID control.

[0013] According to the device for fine spot temperature measurement and temperature control described in the utility model, the inner surface of the adapter is provided with an internal thread, the outer surface of the focusing device is provided with an external thread, and the adapter and the focusing device are threadedly connected. The mutual cooperation between the above parts facilitates connection.

[0014] Beneficial Effects

[0015] Compared with the prior art, the utility model can realize the display of temperature measurement and temperature control functions, and the temperature can be fed back in real time, so that the temperature of the material can be measured during the heating process and the material can be heated to the target temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is the overall structure diagram of the device for fine light spot temperature measurement and temperature control of the utility model;

[0018] Figure 2 It is a partial structural diagram of the device for fine light spot temperature measurement and temperature control of the utility model;

[0019] Figure 3 The utility model is a device for fine spot temperature measurement and temperature control Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is a structural diagram of a temperature measurement module of a device for fine light spot temperature measurement and temperature control of the utility model;

[0021] Legend:

[0022] 1. Laser fiber connection device; 2. Laser beam angle adjustment module; 3. Addition module; 4. Backplane installation module; 5. Adapter; 6. Focusing device; 7. First coupling module; 8. Second coupling module; 9. Temperature measurement beam emitting device; 10. Laser beam interface; 11. Temperature measurement laser head. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4The utility model embodiment is a device for fine spot temperature measurement and temperature control, which includes: a temperature measuring beam emitting device 9, the temperature measuring beam emitted by the temperature measuring beam emitting device 9 is incident on the focusing device 6 through the reflector, the first coupling module 7 and the second coupling module 8 are adjusted to make the temperature measuring beam coaxial with the laser beam, so as to facilitate the coaxiality of the temperature measuring beam and the laser beam, the output end of the temperature measuring beam emitting device 9 is fixedly connected with the second coupling module 8, the lower surface of the second coupling module 8 is fixedly connected with the first coupling module 7, the bottom end of the first coupling module 7 is fixedly connected with the composite module 3, the side surface of the composite module 3 is fixedly connected with the mounting backplane module 4, the lower surface of the mounting backplane module 4 is fixedly connected with the adapter 5, the inner surface of the adapter 5 is provided with an internal thread, and the outer surface of the focusing device 6 is provided with an external thread. Thread, the adapter 5 and the focusing device 6 are threadedly connected, which is convenient for connection. The adapter 5 is an adapter plate for connecting the mounting backplane module 4 and the focusing device 6. The adapter 5 is fixedly connected to the mounting backplane module 4 by screws, which is convenient for installation and disassembly. The lower surface of the adapter 5 is threadedly connected with the focusing device 6. The focusing lens of the focusing device 6 is a parabolic focusing lens, an integrating lens or a dual-focus lens, which is convenient for focusing the reflected laser beam. The focusing device 6 includes: a focusing lens, and the focusing lenses are all copper lenses with a multi-channel spiral water-cooling structure, which are connected with a water inlet pipe and a water outlet pipe through a lens seat, which is convenient for replacing different focusing lenses to make the light spot of the laser acting on the workpiece present different shapes, thereby realizing different laser processing processes, and can realize temperature measurement and temperature control function display, and the temperature can be fed back in real time.

[0025] The lower surface of the composite module 3 is fixedly connected with a laser beam angle adjustment module 2, and the lower surface of the laser beam angle adjustment module 2 is fixedly connected with a laser fiber connection device 1. The laser fiber connection device 1 includes: a temperature measuring laser head 11, and the temperature measuring laser head 11 is a contact linear displacement sensor. The measuring end of the temperature measuring laser head 11 is coaxial with the laser and at the focus of the laser, so as to facilitate controlling the laser power to heat the material. When the measured temperature exceeds the target temperature, the laser power is reduced, and the whole process is closed-loop controlled by PID control. The lower surface of the temperature measuring laser head 11 is provided with a laser beam interface 10. The laser beam angle module 2 can adjust the angle of the incident laser beam, so as to measure the temperature of the material during the heating process and heat the material to the target temperature.

[0026] Working principle: When using this device, the laser fiber is connected through the laser fiber connection device 1, and the laser beam is transmitted to the temperature measuring laser head 11 through the laser beam interface 10. The laser beam angle adjustment module 2 can adjust the angle of the incident laser beam. The sum module 3 can reflect the laser to the focusing device 6, and at the same time, the temperature measuring beam emitted by the temperature measuring beam emitting device 9 can be incident on the focusing device 6 through the reflector. The temperature measuring beam and the laser beam are made coaxial by adjusting the first coupling module 7 and the second coupling module 8. The mounting backplane module 4 is the mounting backplane of the entire device. The screws are fixed to the equipment. The adapter 5 is an adapter plate for connecting the backplane module 4 and the focusing device 6. The focusing device 6 focuses the light beam input by the laser into a laser with processing capability to achieve material heating. At the same time, the temperature measuring light beam converges the temperature measuring light spot onto the temperature measuring material through the focusing device 6. The principle of the whole device is that the temperature measuring light beam and the laser beam are irradiated to the material at the same time. At this time, the temperature measuring light beam can measure the current temperature and control the laser power to heat the material. When the measured temperature exceeds the target temperature, the laser power is reduced. The whole process is closed-loop controlled through PID control.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A device for fine spot temperature measurement and temperature control, characterized in that: include: A temperature measuring light beam emitting device (9), wherein the output end of the temperature measuring light beam emitting device (9) is fixedly connected to a second coupling module (8), the lower surface of the second coupling module (8) is fixedly connected to a first coupling module (7), the bottom end of the first coupling module (7) is fixedly connected to a composite module (3), the side surface of the composite module (3) is fixedly connected to a mounting backplane module (4), the lower surface of the mounting backplane module (4) is fixedly connected to a switching device (5), and the lower surface of the switching device (5) is threadedly connected to a focusing device (6); The lower surface of the sum module (3) is fixedly connected to a laser beam angle adjustment module (2), and the lower surface of the laser beam angle adjustment module (2) is fixedly connected to a laser optical fiber connection device (1).

2. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The laser optical fiber connection device (1) comprises a temperature measuring laser head (11), and a laser beam interface (10) is provided on the lower surface of the temperature measuring laser head (11).

3. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The temperature measuring light beam emitted by the temperature measuring light beam emitting device (9) is incident on the focusing device (6) through a reflector, and the first coupling module (7) and the second coupling module (8) are adjusted so that the temperature measuring light beam and the laser beam are coaxial.

4. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The focusing device (6) comprises focusing lenses, and the focusing lenses are all copper lenses with multi-channel spiral water-cooling structures, and are connected to a water inlet pipe and a water outlet pipe through a lens seat.

5. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The focusing lens of the focusing device (6) is a parabolic focusing lens, an integrating lens or a double-focus lens.

6. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The adapter device (5) is an adapter plate for adapter-connecting the mounting backplane module (4) and the focusing device (6); the adapter device (5) is fixedly connected to the mounting backplane module (4) via screws.

7. The device for fine spot temperature measurement and temperature control according to claim 2, characterized in that: The temperature measuring laser head (11) is a contact type linear displacement sensor, and the measuring end of the temperature measuring laser head (11) is coaxial with the laser and is located at the focus of the laser.

8. The device for fine spot temperature measurement and temperature control according to claim 1, characterized in that: The inner surface of the adapter device (5) is provided with an internal thread, the outer surface of the focusing device (6) is provided with an external thread, and the adapter device (5) and the focusing device (6) are threadedly connected.

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