Temperature sensing device and laser head

Abstract

The utility model belongs to the technical field of laser, and relates to a temperature sensing device and a laser head. The temperature sensing device comprises a mounting base and a temperature measuring sensor, the mounting base is used for mounting an optical element, the mounting base is provided with a light passing groove penetrating through the two ends, the optical element is located in the light passing groove, one side of the mounting base is provided with a containing groove, the containing groove is communicated with the light passing groove, the temperature measuring sensor is arranged in the containing groove, and the temperature measuring sensor is arranged in the containing groove. And the monitoring direction of the temperature measuring sensor faces the light passing groove. The temperature measurement sensor is adopted to monitor and feed back the temperature of the optical element in real time, timely regulation and control are facilitated after the temperature of the optical element exceeds a threshold value, the situation that the temperature of the optical element is too high due to too high power of a laser beam is avoided, and therefore abnormity of the optical element is avoided; and moreover, a technician does not need to check whether the optical element is abnormal or not after observing the abnormal feedback of the laser beam applied to the product, so that the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser, more particularly, to a temperature sensing device and a laser head. BACKGROUND

[0002] In the laser processing industry, the optical element in the optical module is the core component of the laser head, and whether its working state is normal is indispensable in laser application. Whether the abnormal optical element can be quickly and timely found is crucial to the stability of laser application. At present, the traditional detection method is that the process personnel observes the abnormal feedback of the laser beam applied on the product during the laser processing application, and then investigates whether the optical element is abnormal. This puts higher requirements on the experience and skills of the process personnel and the investigation of the abnormality is too cumbersome. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application provides a temperature sensing device and a laser head, which are used to solve the problem that it is difficult to determine whether the optical element is abnormal in the prior art.

[0004] In order to solve the above technical problem, the embodiment of the present application provides a temperature sensing device, which adopts the following technical scheme:

[0005] A temperature sensing device, comprising: a mounting seat and a temperature sensor, the mounting seat is used for mounting an optical element, the mounting seat is provided with a light passing groove penetrating through both ends, the optical element is located in the light passing groove, one side of the mounting seat is provided with a containing groove, the containing groove is in communication with the light passing groove, the temperature sensor is arranged in the containing groove, and the monitoring direction of the temperature sensor is towards the light passing groove.

[0006] Further, the temperature sensor is a dot matrix type infrared temperature sensor.

[0007] Further, there is an included angle a between the monitoring direction of the temperature sensor and the axial direction of the light passing groove, and the included angle a satisfies the following condition: 0 < a < 45°.

[0008] Alternatively, the monitoring direction of the temperature sensor is perpendicular to the light passing groove, and the monitoring direction of the temperature sensor and the surface of the optical element are located on the same horizontal plane.

[0009] Further, the mounting base comprises a base body and a mounting plate; the light passing groove penetrates two ends of the base body, two sides adjacent to the base body are respectively provided with the accommodating groove and a mounting groove, the mounting groove and the accommodating groove are arranged in the axial direction of the light passing groove; the mounting plate is arranged in the mounting groove and is movable along the groove length direction of the mounting groove, one end of the mounting plate abuts against the inner wall of the base body, the other end of the mounting plate is located in the mounting groove or protrudes from the side wall of the base body, the mounting plate is provided with an avoiding groove penetrating two ends, the avoiding groove is coaxially arranged with the light passing groove, and the mounting plate is used for mounting an optical element.

[0010] Further, the mounting base further comprises a fixing block, the fixing block is connected to the end of the mounting plate away from the light passing groove, and the fixing block is further connected to the base body.

[0011] Further, the groove wall of the avoiding groove is provided with an annular supporting block, the mounting base further comprises a pressing ring, the side wall of the pressing ring is connected to the avoiding groove, and the pressing ring is arranged in the axial direction of the avoiding groove and is spaced apart from the annular supporting block, and the pressing ring and the annular supporting block are used for clamping the optical element.

[0012] Further, the base body comprises an upper base and a bottom base, the upper base is connected to the bottom base, the mounting groove is arranged on the end face of the bottom base close to the upper base, the accommodating groove is arranged on the upper base, and the light passing groove penetrates the upper base and the bottom base.

[0013] Further, one end of the upper base close to the bottom base is provided with a limiting ring, the limiting ring is located in the light passing groove, and the two end surfaces of the mounting plate abut against the limiting ring and the bottom base respectively.

[0014] In order to solve the above technical problems, the embodiment of the present application further provides a laser head, which adopts the technical scheme as follows:

[0015] A laser head comprises a shell, an optical element and a temperature sensing device as described above; the mounting base is mounted in the shell, and the optical element is mounted in the light passing groove.

[0016] Further, the laser head further comprises a control module, and the temperature sensor is electrically connected to the control module.

[0017] Compared with the prior art, the embodiments of this application have the following advantages: the use of a temperature sensor to monitor and provide feedback on the temperature of the optical components in real time, so that the output power of the laser can be adjusted in a timely manner when the temperature of the optical components exceeds the threshold, thereby avoiding the optical components from overheating due to excessive laser beam power and thus avoiding abnormalities in the optical components; moreover, it eliminates the need for process personnel to check for abnormalities in the optical components by observing abnormal feedback from the laser beam applied to the product, reducing the difficulty of operation and providing a more intelligent guarantee for the stability of the optical components and laser head. Attached Figure Description

[0018] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a temperature sensing device and an optical element assembled together, according to an embodiment of this application.

[0020] Figure 2 yes Figure 1 Exploded view;

[0021] Figure 3 yes Figure 1 Top view;

[0022] Figure 4 yes Figure 3 Sectional view at point AA;

[0023] Figure 5 yes Figure 3 Sectional view at point BB;

[0024] Figure 6 This is a demonstration of an application case of a dot matrix infrared temperature sensor.

[0025] Reference numerals: 100, temperature sensing device; 1, mounting base; 11, light transmission groove; 12, receiving groove; 13, base body; 131, upper seat; 132, base; 14, mounting groove; 15, mounting plate; 16, clearance groove; 17, fixing block; 18, annular support block; 19, pressure ring; 2, temperature sensor; 200, optical element. Detailed Implementation

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0029] This application provides a temperature sensing device 100, such as... Figures 1 to 5 As shown, the temperature sensing device 100 includes: a mounting base 1 and a temperature sensor 2. The mounting base 1 is used to mount an optical element 200. The mounting base 1 has a light-transmitting groove 11 extending through both ends. The optical element 200 is located in the light-transmitting groove 11. A receiving groove 12 is provided on one side of the mounting base 1. The receiving groove 12 communicates with the light-transmitting groove 11. The temperature sensor 2 is located in the receiving groove 12, and the monitoring direction of the temperature sensor 2 faces the light-transmitting groove 11.

[0030] The working principle of the temperature sensing device 100 provided in this application embodiment is as follows: The temperature sensing device 100 is applied in a laser head, wherein the mounting base 1 is installed in the housing of the laser head, the optical element 200 is installed in the light transmission slot 11, and the temperature sensor 2 is electrically connected to the control module; after the laser emits a laser beam, the laser beam enters the optical element 200 through the light transmission slot 11, the optical element 200 shapes the laser beam, and finally the laser beam passes through the optical element 200 and acts on the product. Since the optical element 200 is installed in the light transmission slot 11, and the monitoring direction of the temperature sensor 2 is towards the light transmission slot 11, the temperature sensor 2 can monitor and provide feedback on the temperature of the optical element 200 in real time.

[0031] The beneficial effects of the temperature sensing device 100 provided in this application embodiment are as follows: the temperature sensor 2 is used to monitor and provide feedback on the temperature of the optical element 200 in real time, so that the output power of the laser can be adjusted in time when the temperature of the optical element 200 exceeds the threshold, thereby avoiding the optical element 200 from overheating due to excessive laser beam power and thus avoiding abnormalities in the optical element 200; moreover, it eliminates the need for process personnel to check whether there are abnormalities in the optical element 200 after observing abnormal feedback of the laser beam applied to the product, reducing the difficulty of operation and providing a more intelligent guarantee for the stability of the optical element 200 and the laser head.

[0032] Furthermore, the temperature sensor is a dot-matrix infrared temperature sensor.

[0033] In this embodiment, the dot-matrix infrared temperature sensor, as a type of non-contact temperature sensor, differs from traditional single-point temperature measurement methods, such as... Figure 6 As shown, the single-point temperature measurement area matrix uses multiple points distributed on a region surface for temperature measurement, which can cover a larger temperature measurement area and accurately reflect the temperature field distribution of the measured area. At the same time, it can be applied to the continuous and long-term monitoring of the temperature changes of core optical components in industrial sites and to perform data acquisition, recording, analysis and other signal interaction. Before the entire laser application system malfunctions, early warning can be given to avoid greater property damage and economic losses caused by the abnormality of optical components.

[0034] like Figure 4 As shown, further, there is an angle α between the monitoring direction of the temperature sensor 2 and the axis of the light-transmitting groove 11, and the angle α satisfies the following condition: 0<α≤45°.

[0035] In this embodiment, since the optical element 200 is installed in the light-transmitting groove 11, and there is an angle between the monitoring direction of the temperature sensor 2 and the light-transmitting groove 11, there is an angle between the monitoring direction of the temperature sensor 2 and the surface of the optical element 200, so as to improve the monitoring range of the temperature sensor 2.

[0036] Optionally, the monitoring direction of the temperature sensor 2 is perpendicular to the light-transmitting groove 11, and the monitoring direction of the temperature sensor 2 is on the same horizontal plane as the surface of the optical element 200.

[0037] In this embodiment, the monitoring direction of the temperature sensor 2 is on the same horizontal plane as the surface of the optical element 200, which can also effectively monitor the temperature of the optical element 200.

[0038] like Figure 2 , 4As shown in Figure 5, the mounting base 1 further includes a base body 13 and a mounting plate 15; the light transmission groove 11 extends through both ends of the base body 13, and the accommodating groove 12 and the mounting groove 14 are respectively provided on adjacent sides of the base body 13, and the mounting groove 14 and the accommodating groove 12 are spaced apart in the axial direction of the light transmission groove 11; the mounting plate 15 is disposed in the mounting groove 14 and can move along the groove length direction of the mounting groove 14, one end of the mounting plate 15 abuts against the inner wall of the base body 13, and the other end of the mounting plate 15 is located in the mounting groove 14 or protrudes from the side wall of the base body 13, the mounting plate 15 is provided with a clearance groove 16 extending through both ends, the clearance groove 16 is coaxially arranged with the light transmission groove 11, and the mounting plate 15 is used to mount the optical element 200.

[0039] In this embodiment, when installing the optical element 200, the optical element 200 is placed on the mounting plate 15, and then the mounting plate 15 is aligned with the mounting groove 14 and inserted into the mounting groove 14. The mounting plate 15 is continuously moved along the length of the mounting groove 14 until the end of the mounting plate 15 abuts against the inner wall of the base 13. When replacing the optical element 200, the end of the mounting plate 15 is held and then the mounting plate 15 is pulled out of the mounting groove 14.

[0040] In this embodiment, a mounting plate 15 and a mounting slot 14 are provided to facilitate the installation or replacement of the optical element 200.

[0041] Furthermore, the mounting base 1 also includes a fixing block 17, which is connected to the end of the mounting plate 15 away from the light transmission groove 11, and the fixing block 17 is also connected to the base body 13.

[0042] In this embodiment, when installing the optical element 200, the optical element 200 is placed on the mounting plate 15, and then the fixing block 17 is held. The mounting plate 15 is aligned with the mounting groove 14 and inserted into the mounting groove 14. The mounting plate 15 is continuously moved along the length of the mounting groove 14 until the end of the mounting plate 15 abuts against the inner wall of the base 13 and the side wall of the fixing block 17 abuts against the side wall of the base 13. Then the fixing block 17 is connected to the base 13. When replacing the optical element 200, the connection between the fixing block 17 and the base 13 is released, and then the fixing block 17 is held. The mounting plate 15 is pulled out of the mounting groove 14 through the fixing block 17.

[0043] In this embodiment, the fixing block 17 can fix the position of the mounting plate 15 to prevent the optical element 200 from being displaced due to the displacement of the mounting plate 15. The fixing block 17 also facilitates the installation or replacement of the optical element 200.

[0044] In this embodiment, the fixing block 17 and the end of the mounting plate 15 are connected by screws so that the fixing block 17 and the mounting plate 15 can be installed together.

[0045] In this embodiment, the fixing block 17 is connected to the base 13 by screws to facilitate the installation and removal of the fixing block 17.

[0046] like Figure 2 , 4 As shown in Figure 5, the groove wall of the clearance groove 16 is provided with an annular support block 18, and the mounting base 1 also includes a pressure ring 19. The side wall of the pressure ring 19 is connected to the clearance groove 16, and the pressure ring 19 and the annular support block 18 are spaced apart. The pressure ring 19 and the annular support block 18 are used to clamp the optical element 200.

[0047] In this embodiment, the position of the optical element 200 is restricted by the cooperation of the annular support block 18 and the pressure ring 19, so as to prevent the optical element 200 from being displaced.

[0048] Furthermore, the base 13 includes an upper seat 131 and a base 132, the upper seat 131 is connected to the base 132, the mounting groove 14 is provided on the end face of the base 132 near the upper seat 131, the receiving groove 12 is provided on the upper seat 131, and the light transmission groove 11 passes through the upper seat 131 and the base 132.

[0049] In this embodiment, the top cover and the base 132 are connected by screws.

[0050] In this embodiment, the mounting slot 14 and the receiving slot 12 are respectively provided on the upper seat 131 and the base 132 to provide installation space for the temperature sensor 2 and the mounting plate 15.

[0051] Furthermore, a limiting ring (not shown) is provided at one end of the upper seat 131 near the base 132. The limiting ring is located in the light-transmitting groove 11, and the two end surfaces of the mounting plate 15 abut against the limiting ring and the base 132, respectively.

[0052] In this embodiment, a limiting ring is provided on the upper seat 131 to limit the position of the mounting plate 15 and prevent the end of the mounting plate 15 away from the mounting groove 14 from tilting without support, thereby avoiding inaccurate installation of the optical element 200.

[0053] This application provides a laser head, such as... Figures 1 to 5 As shown, the laser head includes a housing (not shown), an optical element 200, and a temperature sensing device 100 as described above; the mounting base 1 is installed inside the housing, and the optical element 200 is installed inside the light transmission groove 11.

[0054] The working principle of the laser head provided in this application embodiment is as follows: After the laser emits a laser beam, the laser beam enters the optical element 200 through the light transmission groove 11. The optical element 200 shapes the laser beam, and finally the laser beam passes through the optical element 200 and acts on the product. Since the optical element 200 is installed in the light transmission groove 11, and the monitoring direction of the temperature sensor 2 is towards the light transmission groove 11, the temperature sensor 2 can monitor and provide feedback on the temperature of the optical element 200 in real time.

[0055] The beneficial effects of the laser head provided in this application embodiment are as follows: the temperature sensor 2 is used to monitor and provide feedback on the temperature of the optical element 200 in real time, so that the output power of the laser can be adjusted in time when the temperature of the optical element 200 exceeds the threshold, thereby avoiding the optical element 200 from overheating due to excessive laser beam power and thus avoiding abnormalities in the optical element 200; moreover, it eliminates the need for process personnel to check whether there are abnormalities in the optical element 200 after observing abnormal feedback of the laser beam applied to the product, reducing the difficulty of operation and providing a more intelligent guarantee for the stability of the optical element 200 and the laser head.

[0056] Furthermore, the laser head also includes a control module (not shown), and the temperature sensor 2 is electrically connected to the control module.

[0057] In this embodiment, the control module is used to connect to the host computer via signal. The temperature sensor 2 monitors the temperature of the optical element 200 in real time and transmits the temperature signal to the control module in real time. Finally, the control module transmits the temperature signal to the host computer. If the temperature signal is within the set threshold, the laser continues to work. If the temperature signal exceeds the set threshold, the host computer adjusts the output power of the laser.

[0058] In this embodiment, the optical element 200 can be one or more of a convex lens, a concave lens, a plane mirror, etc.

[0059] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A temperature sensing device, characterized in that, include: A mounting base and a temperature sensor are provided. The mounting base is used to mount optical elements. The mounting base has a light-transmitting groove that extends through both ends. The optical elements are located in the light-transmitting groove. A receiving groove is provided on one side of the mounting base. The receiving groove is connected to the light-transmitting groove. The temperature sensor is located in the receiving groove, and the monitoring direction of the temperature sensor is towards the light-transmitting groove.

2. The temperature sensing device according to claim 1, characterized in that, The temperature sensor is a dot-matrix infrared temperature sensor.

3. The temperature sensing device according to claim 2, characterized in that, The monitoring direction of the temperature sensor is at an angle α with the axis of the light-transmitting groove, and the angle α satisfies the following condition: 0<α≤45°; Alternatively, the monitoring direction of the temperature sensor is set perpendicular to the light-transmitting slot, and the monitoring direction of the temperature sensor is on the same horizontal plane as the surface of the optical element.

4. The temperature sensing device according to any one of claims 1 to 3, characterized in that, The mounting base includes a base body and a mounting plate; the light transmission groove extends through both ends of the base body, and the accommodating groove and the mounting groove are respectively provided on adjacent sides of the base body, with the mounting groove and the accommodating groove spaced apart along the axial direction of the light transmission groove; the mounting plate is disposed in the mounting groove and can move along the length of the mounting groove, one end of the mounting plate abuts against the inner wall of the base body, and the other end of the mounting plate is located in the mounting groove or protrudes from the side wall of the base body, the mounting plate is provided with a clearance groove extending through both ends, the clearance groove being coaxially arranged with the light transmission groove, and the mounting plate is used to mount optical elements.

5. The temperature sensing device according to claim 4, characterized in that, The mounting base also includes a fixing block, which is connected to the end of the mounting plate away from the light transmission groove, and the fixing block is also connected to the base body.

6. The temperature sensing device according to claim 4, characterized in that, The clearance groove has an annular support block on its groove wall, and the mounting base also includes a pressure ring. The side wall of the pressure ring is connected to the clearance groove, and the pressure ring and the annular support block are spaced apart. The pressure ring and the annular support block are used to clamp optical components.

7. The temperature sensing device according to claim 4, characterized in that, The base includes an upper seat and a base, the upper seat is connected to the base, the mounting groove is located on the end face of the base near the upper seat, the receiving groove is located on the upper seat, and the light transmission groove passes through the upper seat and the base.

8. The temperature sensing device according to claim 7, characterized in that, The upper seat is provided with a limiting ring at one end near the base. The limiting ring is located in the light-transmitting groove, and the two end surfaces of the mounting plate abut against the limiting ring and the base, respectively.

9. A laser head, characterized in that, It includes a housing, an optical element, and a temperature sensing device as described in any one of claims 1 to 8; the mounting base is installed inside the housing, and the optical element is installed inside the light-transmitting groove.

10. The laser head according to claim 9, characterized in that, The laser head also includes a control module, and the temperature sensor is electrically connected to the control module.

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