Laser welding device with temperature control monitoring device

Abstract

The utility model relates to a laser welding device with a temperature control monitoring device. The laser welding device comprises an optical fiber access assembly; the reflection assembly is connected to the optical fiber access assembly, the reflection assembly comprises a reflection shell and a reflection lens assembly, and a reflection light cavity is formed in the reflection shell; the reflection lens assembly is arranged in the reflection light cavity; the focusing lens assembly is arranged below the reflection assembly, the focusing lens assembly comprises a focusing shell, a focusing lens and a focusing protection lens, a focusing light cavity is formed in the focusing shell, the focusing lens and the focusing protection lens are both arranged in the focusing light cavity, and the focusing lens is arranged above the focusing protection lens; the upper end and the lower end of the focusing shell are provided with a light inlet and a light outlet respectively. The light inlet is communicated with the reflection light cavity. The temperature control assembly is arranged in the focusing shell; the welding assembly is connected to the light outlet; the control panel is arranged on the outer side of the focusing shell, and the optical fiber access assembly, the reflection assembly, the focusing lens assembly, the temperature control assembly and the welding assembly are all electrically connected with the control panel. Burnout of the assembly caused by too high temperature in the welding process is prevented, and meanwhile impurities are prevented from affecting the precision and the service life of the focusing lens assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding technical field, concretely relates to a laser welding device with temperature control monitoring device. BACKGROUND

[0002] Laser welding is a kind of high-efficiency precision welding method using high-energy density laser beam as heat source.Laser welding is one of important aspects of laser material processing technology application, and it can be applied to the welding of jewelry, picture tube, sensor, aluminum alloy, notebook computer shell, mobile phone battery, mold, electrical appliance accessory, stainless steel product, zinc alloy handicraft and other fields;But due to the dust pollution of the working environment, the internal optical precision components, especially the focusing lens, are prone to impurity accumulation, and a large amount of heat is generated after the laser beam passes through the lens assembly, and the high temperature in the chamber can easily cause the damage of the lens assembly.

[0003] Therefore, it is urgent to provide a laser welding device with temperature control monitoring device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the insufficient and defect of prior art, provide a kind of laser welding device with temperature control monitoring device, prevent the burnout of component caused by temperature excessively high in welding process, simultaneously prevent the precision and service life of focusing lens assembly from being affected by impurity.

[0005] The utility model aims at overcoming the insufficient and defect of prior art, provide a kind of laser welding device with temperature control monitoring device, prevent the burnout of component caused by temperature excessively high in welding process, simultaneously prevent the precision and service life of focusing lens assembly from being affected by impurity.

[0006] A kind of laser welding device with temperature control monitoring device, it is characterized by comprising:

[0007] Optical fiber access assembly, to generate laser beam;

[0008] Reflection assembly is connected to optical fiber access assembly, and the reflection assembly includes reflection shell and reflection lens assembly, and reflection light cavity is arranged in the reflection shell;Reflection lens assembly is arranged in reflection light cavity, to reflect laser beam out of reflection light cavity;

[0009] Focusing lens assembly is arranged below reflection assembly, and the focusing lens assembly includes focusing shell, focusing lens and focusing protective lens, focusing light cavity is arranged in the focusing shell, focusing lens and focusing protective lens are arranged in focusing light cavity, and focusing lens is arranged above focusing protective lens;The light inlet and light outlet are respectively arranged on the upper end and lower end of focusing shell, and the light inlet is communicated with reflection light cavity;

[0010] Temperature control assembly is arranged in focusing shell, and the temperature control assembly is used to monitor the temperature in focusing shell;

[0011] A welding assembly connected to the light outlet, used to receive a laser beam and weld a product;

[0012] A control panel arranged outside the focusing shell, and the optical fiber access assembly, the reflecting assembly, the focusing lens assembly, the temperature control assembly and the welding assembly are electrically connected with the control panel.

[0013] Optionally, the temperature control assembly comprises a first temperature control device and a second temperature control device, the first temperature control device is connected to the focusing protective lens to monitor the temperature of the focusing protective lens, the second temperature control device is connected to the focusing lens to monitor the temperature of the focusing protective lens, and the first temperature control device and the second temperature control device are electrically connected with the control panel.

[0014] Optionally, the reflecting lens assembly comprises a plurality of reflecting lenses and a plurality of motors, one reflecting lens is connected with one motor, and the motor is used to drive the reflecting lens to rotate along the rotation axis.

[0015] Optionally, the temperature control assembly comprises an infrared temperature control device and a sensor temperature control device, and the infrared temperature control device and the sensor temperature control device are electrically connected with the control panel and are switched through the control panel.

[0016] Optionally, the focusing protective lens and the focusing lens are installed in the inner wall of the focusing shell through the mounting piece, the inner wall of the focusing shell is correspondingly provided with a mounting cavity for accommodating the mounting piece, and a plurality of gas through holes are arranged on the mounting piece.

[0017] Optionally, the focusing shell is also provided with a gas pipe assembly outside, one end of the gas pipe assembly is connected to the focusing light cavity through an interface, and the other end is connected with a fan assembly to cool the focusing light cavity.

[0018] Optionally, the reflecting shell and the welding assembly are also provided with a gas pipe assembly outside, and the gas pipe assembly is provided with at least three groups.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] In the mainboard of the utility model, the optical fiber access assembly is arranged at the upper end of the reflective assembly, and is used to generate a laser beam and transmit the generated laser beam to the reflective assembly; the reflective assembly includes a reflective housing and a reflective lens assembly, wherein a reflective light cavity is provided in the reflective housing, and the reflective lens assembly is arranged in the reflective light cavity. The accurate transmission of the laser beam is ensured by reflection of the reflective lens assembly; the focusing lens assembly includes a focusing housing, a focusing lens, and a focusing protection lens, wherein the focusing housing is provided with a focusing light cavity, and the focusing protection lens can prevent impurities from adhering to or damaging the focusing lens. The laser beam enters the focusing light cavity from the reflective light cavity through the light inlet; the temperature control assembly is arranged in the focusing housing, and is used to monitor the temperature within the focusing housing; the welding assembly is used to receive the laser beam and weld the product; the control panel can monitor and display the working status of each component, and display the monitoring results of the temperature control assembly, which is convenient for staff to observe and operate. The arrangement of the above components prevents the components from being burned due to excessive temperature during the welding process, and at the same time prevents impurities from affecting the accuracy and service life of the focusing lens assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a front view of the utility model.

[0023] Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction.

[0024] Figure 4 for Figure 3 A partial enlarged view of the middle BB.

[0025] The above drawings include the following reference numerals:

[0026] 1. Fiber optic access assembly, 21. Reflective housing, 22. Reflective lens assembly, 23. Reflective optical cavity, 31. Focusing housing, 32. Focusing lens, 33. Focusing protection lens, 34. Focusing optical cavity, 35. Mounting part, 41. First temperature control device, 42. Second temperature control device, 5. Welding assembly, 6. Control panel, 7. Air pipe assembly. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0028] The technical solution of the utility model proposes a laser welding device provided with a temperature control monitoring device.

[0029] Reference Figures 1 to 4 , in this embodiment, including:

[0030] The optical fiber access assembly 1 is used to generate a laser beam;

[0031] The reflection assembly is connected to the optical fiber access assembly 1, and the reflection assembly comprises a reflection shell 21 and a reflection lens assembly 22. The reflection shell 21 is internally provided with a reflection light cavity 23. The reflection lens assembly 22 is arranged in the reflection light cavity 23 and is used to reflect the laser beam out of the reflection light cavity 23;

[0032] The focusing lens assembly is arranged below the reflection assembly, and the focusing lens assembly comprises a focusing shell 31, a focusing lens 32 and a focusing protective lens 33. The focusing shell 31 is internally provided with a focusing light cavity 34. The focusing lens 32 and the focusing protective lens 33 are both arranged in the focusing light cavity 34, and the focusing lens 32 is arranged above the focusing protective lens 33. The focusing shell 31 is respectively provided with an inlet and an outlet at the upper end and the lower end. The inlet is in communication with the reflection light cavity 23;

[0033] The temperature control assembly is arranged in the focusing shell 31, and the temperature control assembly is used to monitor the temperature in the focusing shell 31;

[0034] The welding assembly 5 is connected to the outlet and is used to receive the laser beam and weld the product;

[0035] The control panel 6 is arranged outside the focusing shell 31. The optical fiber access assembly 1, the reflection assembly, the focusing lens assembly, the temperature control assembly and the welding assembly 5 are all electrically connected with the control panel 6.

[0036] Optionally, in this embodiment, the laser welding device provided with a temperature control monitoring device includes an optical fiber access component 1, a reflective component, a focusing lens component, a temperature control component, a welding component 5 and a control panel 6, wherein the optical fiber access component 1 is provided at the upper end of the reflective component, for generating a laser beam and transmitting the generated laser beam to the reflective component; the reflective component is connected to the optical fiber component, the reflective component includes a reflective shell 21 and a reflective lens component 22, a reflective light cavity 23 is provided in the reflective shell 21, and the reflective lens component 22 is provided in the reflective light cavity 23. After the laser beam generated by the optical fiber access component 1 enters the reflective light cavity 23, it is reflected by the reflective lens component 22, thereby ensuring the accurate transmission of the laser beam and improving the efficiency of subsequent welding, and concentrating the reflected laser beam and reflecting it out of the reflective light cavity 23; the focusing lens component is provided below the reflective component, the focusing lens component includes a focusing shell 31, a focusing lens 32 and a focusing protection lens 33, wherein a focusing light cavity 34 is provided in the focusing shell 31, and the focusing lens 32 and the focusing protection lens 33 are both provided in the focusing light cavity 34, and the focusing lens 32 is provided above the focusing protection lens 33. When welding, the focusing protection lens 33 can prevent impurities from adhering to or damaging the focusing lens 32. The upper and lower ends of the focusing housing 31 are respectively provided with a light inlet and a light outlet, and the light inlet is connected to the reflective light cavity 23, that is, the laser beam enters the focusing light cavity 34 from the reflective light cavity 23 through the light inlet, and the reflected laser beam is focused by the focusing lens 32 to form a light spot for welding; a temperature control component is provided in the focusing housing 31, and the temperature control component is used to monitor the temperature inside the focusing housing 31 to prevent the temperature inside the focusing housing 31 from being too high, which may cause the focusing lens 32 to The focusing lens 32 is not damaged or burned. At the same time, if the temperature inside the focusing housing 31 is too high and burns, the focusing protection lens 33 can also protect the focusing lens 32 to a certain extent; the welding component 5 is connected to the light outlet to receive the laser beam and weld the product; the control panel 6 is arranged on the outside of the focusing housing 31, and the optical fiber access component 1, the reflection component, the focusing lens component, the temperature control component and the welding component 5 are all electrically connected to the control panel 6. The control panel 6 can monitor and display the working status of each component, and display the monitoring results of the temperature control component to facilitate observation and operation by the staff. Through the arrangement of the above components, the components are prevented from being burned due to excessive temperature during the welding process, and impurities are prevented from affecting the accuracy and service life of the focusing lens component.

[0037] In this embodiment, the temperature control component includes a first temperature control device 41 and a second temperature control device 42, wherein the first temperature control device 41 is connected to the focusing protection lens 33 to monitor the temperature of the focusing protection lens 33 to prevent the temperature at the location of the focusing protection lens 33 from being too high, which may cause the focusing protection lens 33 to burn, thereby causing the entire equipment component to burn from bottom to top, so that the staff can handle it in time; the second temperature control device 42 is connected to the focusing lens 32 to monitor the temperature on the focusing lens 32 to prevent the focusing lens 32 from being burned due to excessive temperature; in other embodiments, the temperature control component may also include a third temperature control device, which is arranged in the reflecting light cavity 23 to monitor the temperature in the reflecting light cavity 23 to prevent the reflecting component from burning, which is not limited here.

[0038] In this embodiment, the reflector assembly includes multiple groups of reflective lenses and multiple groups of motors. One group of reflective lenses corresponds to one group of motors. The motor is used to drive the reflective lenses to rotate along the rotation axis to achieve rapid movement and positioning of the reflected light beam, thereby meeting complex welding tasks.

[0039] In this embodiment, the temperature control assembly includes an infrared temperature control device and a sensor temperature control device. Specifically, the infrared temperature control device is a non-contact temperature control device, while the sensor temperature control device is a contact temperature control device. The infrared temperature control device indirectly measures temperature by radiating infrared heat from the surface of the lens or component. The sensor temperature control device uses a probe to directly contact the edge of the lens or component for measurement, making it more suitable for locations with higher temperatures and requiring higher precision. Both the infrared temperature control device and the sensor temperature control device are electrically connected to the control panel 6, allowing the operator to switch between the infrared temperature control device and the sensor temperature control device according to usage requirements. In other embodiments, the temperature control assembly may include only the infrared temperature control device or the sensor temperature control device, which is not limited here.

[0040] In this embodiment, the focusing protection lens 33 and the focusing lens 32 are both mounted on the inner wall of the focusing shell 31 through a mounting member 35, and the inner wall of the focusing shell 31 is correspondingly provided with a mounting cavity for accommodating the mounting member 35. Through the provision of the mounting member 35, the focusing protection lens 33 and the focusing lens 32 can be detachably connected to the inner wall of the shell for easy replacement. At the same time, a number of gas through holes are provided on the mounting member 35 to facilitate gas circulation and reduce the temperature in the focusing optical cavity 34.

[0041] In this embodiment, the outer shell of the focusing shell 31 is also provided with an air pipe assembly 7, one end of the air pipe assembly 7 is connected to the focusing optical cavity 34 through an interface, and the other end is connected to the fan assembly. Air is blown into the air pipe assembly 7 through the fan assembly, and the air flow enters the focusing optical cavity 34 and flows, thereby reducing the temperature in the focusing optical cavity 34 and preventing the components from burning. At the same time, while the air flow circulates downward, it can also block some impurities from entering the focusing optical cavity 34 and affecting the service life of the focusing lens assembly; further, in this embodiment, an air pipe assembly 7 is also provided on the outside of the reflective shell 21 and the outside of the welding assembly 5. There are at least three groups of air pipe assemblies 7. By setting multiple groups of air pipe assemblies 7, the temperature in each chamber of the equipment can be reduced and the service life of the equipment can be improved.

[0042] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A laser welding device equipped with a temperature control and monitoring device, characterized in that: include: Fiber optic access components to generate laser beams; A reflective assembly connected to the optical fiber access assembly, the reflective assembly comprising a reflective housing and a reflective lens assembly, wherein a reflective optical cavity is provided in the reflective housing; the reflective lens assembly is provided in the reflective optical cavity and is used to reflect the laser beam out of the reflective optical cavity; A focusing lens assembly is provided below the reflective assembly. The focusing lens assembly includes a focusing housing, a focusing lens, and a focusing protection lens. A focusing optical cavity is provided within the focusing housing. Both the focusing lens and the focusing protection lens are provided in the focusing optical cavity, and the focusing lens is provided above the focusing protection lens. A light inlet and a light outlet are provided at the upper and lower ends of the focusing housing, respectively. The light inlet is in communication with the reflective optical cavity. A temperature control component is provided in the focusing housing, and is used to monitor the temperature inside the focusing housing; A welding assembly, connected to the light outlet, for receiving the laser beam and welding the product; The control panel is arranged outside the focusing shell, and the optical fiber access component, the reflection component, the focusing lens component, the temperature control component and the welding component are all electrically connected to the control panel.

2. The laser welding device provided with a temperature control and monitoring device according to claim 1, characterized in that: The temperature control assembly includes a first temperature control device and a second temperature control device. The first temperature control device is connected to the focusing protection lens to monitor the temperature of the focusing protection lens; the second temperature control device is connected to the focusing lens to monitor the temperature of the focusing protection lens, and the first temperature control device and the second temperature control device are both electrically connected to the control panel.

3. The laser welding device provided with a temperature control and monitoring device according to claim 1, characterized in that: The reflective lens assembly includes multiple groups of reflective lenses and multiple groups of motors. One reflective lens is connected to one motor, and the motor is used to drive the reflective lens to rotate along the rotation axis.

4. The laser welding device provided with a temperature control and monitoring device according to claim 2, characterized in that: The temperature control assembly includes an infrared temperature control device and a sensor temperature control device. Both the infrared temperature control device and the sensor temperature control device are electrically connected to the control panel and are switched through the control panel.

5. The laser welding device provided with a temperature control and monitoring device according to claim 1, characterized in that: The focusing protection lens and the focusing lens are both mounted on the inner wall of the focusing housing through mounting pieces. The inner wall of the focusing housing is correspondingly provided with a mounting cavity for accommodating the mounting piece, and the mounting piece is provided with a plurality of gas through holes.

6. The laser welding device provided with a temperature control and monitoring device according to claim 1, characterized in that: An air pipe assembly is also provided on the outside of the focusing housing; one end of the air pipe assembly is connected to the focusing optical cavity through an interface, and the other end is connected to the fan assembly to cool the focusing optical cavity.

7. The laser welding device provided with a temperature control and monitoring device according to claim 6, characterized in that: Air pipe assemblies are also provided on the outside of the reflective shell and the outside of the welding assembly, and at least three groups of air pipe assemblies are provided.

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