Handheld laser welding machine

Abstract

The utility model belongs to laser welding equipment, and discloses a handheld laser welding machine which comprises a machine case and an air duct assembly arranged in the machine case, and an air inlet component is arranged on the first side of the machine case; the air duct assembly comprises an air duct, a heat dissipation target device is arranged between the air duct and the air inlet component, the air inlet end of the air duct is communicated with the air inlet component, the air outlet end of the air duct is communicated with an air outlet component arranged on the second side of the case, the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end, and the first side and the second side are not opposite to each other. The air inlet component and the air outlet component can be matched to carry out air inlet from the vertical face side with the large area of the machine case, air is discharged from the end side face of the machine case after air cooling heat dissipation is carried out on a heat dissipation target device, the air inlet area can be effectively increased through the air inlet and outlet mode, the air speed is low, noise is smaller, and the heat dissipation efficiency is improved. And a better air cooling effect can be obtained by avoiding a cold plate.

Description

Technical Field

[0001] The utility model belongs to laser welding equipment, in particular to a handheld laser welding machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Currently, there are both relatively large automatic laser welding equipment and miniaturized laser welding equipment for personal handheld use, which can perform customized direct welding on the objects to be welded.

[0003] Handheld laser welders need to dissipate heat from their internal heating components, and most of them use air cooling. Figure 1 and Figure 2 As shown, the chassis is usually set to a rectangular structure, and its air inlet and outlet methods mainly include bottom-in and top-out and front-back-in and out. The heat dissipation components are cooled by air through the opposite end side air inlet and outlet method. If the side facade is used for facing air outlet, it will be impossible to achieve because large-area components such as cold plates are arranged on the side facades. The side facade facing air outlet is also not in line with the design common sense of the general chassis appearance. In this way, the opposite end side air inlet and outlet will result in a small space for fan arrangement, a small air inlet area, and a relatively poor air cooling effect. To increase the air volume, it can only be achieved by increasing the fan speed. The higher the speed, the greater the noise, and the reliability and life of the fan will be correspondingly reduced. In addition, no filter is set, and the end cover plate with a large mesh aperture cannot effectively filter dust, which makes it easy for dust to enter the chassis. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a handheld laser welder to solve the problem of small air intake area and air intake volume caused by the use of side-facing air inlet and outlet in the existing laser welder.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A handheld laser welder comprises a chassis and an air duct assembly arranged in the chassis, wherein the chassis is provided with an air inlet component on a first side; the air duct assembly comprises an air duct, a heat dissipation target device is provided between the air duct and the air inlet component, the air inlet end of the air duct is connected with the air inlet component, the air outlet end of the air duct is connected with the air outlet component arranged on the second side of the chassis, and the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end, and the first side and the second side are not opposite sides to each other.

[0007] In a possible implementation, the first side has a first area, the second side has a second area, the first area is greater than the second area, and the air intake area of ​​the air intake component is equal to or smaller than the first area.

[0008] In a possible implementation, the air inlet area of ​​the air inlet component is greater than the air outlet area of ​​the air outlet component.

[0009] In a possible implementation, the chassis is in a rectangular parallelepiped shape, the first side is a side elevation of the chassis, and the second side is a top surface or a bottom surface of the chassis.

[0010] In a possible implementation, the air duct assembly further includes an air duct housing having the air duct, and the air duct housing is provided with an exhaust device at an air inlet end.

[0011] In a possible implementation, the air outlet end is provided with a plurality of inclined air guide plates.

[0012] In a possible implementation, the air intake member includes a filter assembly detachably connected to the chassis;

[0013] The filter assembly comprises an outer filter screen and an inner filter screen which are overlapped and the mesh aperture of the inner filter screen is smaller than the mesh aperture of the outer filter screen.

[0014] In a possible implementation, it also includes a cold plate component, which has a built-in cooling pipeline. The cooling pipeline forms cooling surfaces on both side surfaces of the cold plate component, and optical heating devices and / or electrical heating devices of a laser welder are installed on the cooling surfaces.

[0015] In a possible implementation, the cooling pipeline is a refrigeration pipeline, which extends out of the cold plate component and is connected to a compressor and a condenser;

[0016] The heat dissipation target device is a condenser.

[0017] In a possible implementation, it also includes a fiber optic winding reel and a control circuit assembly, wherein the fiber optic winding reel and the cold plate are arranged inside the third side of the chassis, and the third side is opposite to the first side; the compressor and the air duct assembly are installed at the bottom of the chassis; and the control circuit assembly is arranged on the first side.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The handheld laser welding machine of the utility model can cooperate with the air inlet component and the air outlet component to take in air from the larger area of ​​the vertical surface side of the chassis through the air duct component with the air inlet direction being perpendicular to the air outlet direction, and discharge air from the end side of the chassis after air cooling the heat dissipation target device. Such air inlet and outlet method can effectively increase the air inlet area and increase the air inlet volume, thereby reducing the wind speed and noise, and can also avoid the cold plate to obtain a better air cooling effect.

[0020] Moreover, by using the filter assembly as an air inlet component, it can reduce the risk of dust ingress, and is easy to remove through a detachable connection, making it easy to observe whether the filter is dirty, and to quickly clean it, which is easy to operate.

[0021] At the same time, the built-in cooling pipeline can make both sides of the cold plate usable, with optical heating devices arranged on the front and electrical heating devices arranged on the back. The cold plate has a high utilization rate, lower cost and more compact space than multiple cold plates.

[0022] In addition, the internal space layout of the chassis of the handheld laser welder is reasonable, the structure is compact, the size is small and the space utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an existing handheld laser welding machine that adopts a bottom-in and top-out air inlet and outlet method;

[0024] Figure 2 It is a structural schematic diagram of an existing handheld laser welding machine that adopts a front-to-back air inlet and outlet method;

[0025] Figure 3 A stereoscopic view of a handheld laser welder in a first perspective;

[0026] Figure 4 A stereoscopic view of a handheld laser welder at a second viewing angle;

[0027] Figure 5 A partially exploded schematic diagram of a chassis of a handheld laser welder;

[0028] Figure 6 A three-dimensional view of an air duct component of a handheld laser welding machine chassis;

[0029] Figure 7 A three-dimensional view of a cold plate of a handheld laser welding machine chassis on the front side;

[0030] Figure 8 A three-dimensional view of a cold plate of a handheld laser welding machine chassis at the back side;

[0031] Figure 9 A three-dimensional view of a handheld laser welding machine chassis after a side cover plate on the third side is hidden;

[0032] Figure 10 The present invention is a three-dimensional view of a handheld laser welding machine chassis after hiding the top cover and the rear side cover.

[0033] In the figure: 1-chassis; 11-first side; 12-second side; 13-third side; 2-air inlet component; 21-external filter; 22-inner filter; 3-air outlet component; 31-top cover; 4-welding gun head; 5-air duct assembly; 51-air duct housing; 52-exhaust device; 53-air guide plate; 6-condenser; 7-compressor; 8-cold plate component; 81-cooling pipeline; 9-optical heating device; 10-electrical heating device; 100-optical fiber winding disk. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0035] An embodiment of the present application provides a handheld laser welder, which mainly includes a chassis 1 and a handheld welding gun head 4. A user can flexibly perform welding by holding the welding gun head 4.

[0036] In order to solve the problem of small air intake area and air intake volume caused by the use of side-to-side air intake and outlet in existing handheld laser welders, please refer to Figures 3 - 6 As shown, in an embodiment of the present application, it also includes an air duct assembly 5 arranged in the chassis 1, and the chassis 1 is provided with an air inlet component 2 on the first side 11; the air duct assembly 5 includes an air duct, and a heat dissipation target device is provided between the air duct and the air inlet component 2, the air inlet end of the air duct is connected with the air inlet component 2, and the air outlet end of the air duct is connected with the air outlet component 3 arranged on the second side 12 of the chassis 1, and the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end, and the first side 11 and the second side 12 are not opposite sides to each other.

[0037] Among them, the air inlet component 2 is arranged on the first side 11, and the air outlet component 3 is arranged on the second side 12 which is not opposite to the first side 11. Such an arrangement can make one side the vertical side of the chassis 1 which is an overall rectangular structure, and the other side can be the end side surface of the chassis 1, such as the rear end surface, the front end surface, the top end surface or the bottom end surface, and the area of ​​the end side surface is smaller than the area of ​​the vertical side. In this way, the air intake volume can be increased by the air intake of the larger area of ​​the side vertical surface, and the air outlet can be discharged from the end side surface, so that the air volume is increased by the large-surface air intake, and the air cooling effect on the heat dissipation target device between the air duct assembly 5 and the air inlet component 2 is better. Correspondingly, the air inlet end and the air outlet end of the air duct of the air duct assembly 5 are respectively arranged corresponding to the air inlet component 2 and the air outlet component 3, that is, the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end. Through such air inlet and outlet directions, the wind direction can be changed to allow air to enter from the side and then exit from the end side, thereby avoiding passing through large-area components such as cold plates in the opposite direction, and not occupying the opposite surface, which is more in line with the general design logic of the chassis 1. At the same time, due to the use of a large facade air inlet, there is more space for arranging components such as fans, and the air volume will be further increased. The air outlet component 3 can be the top cover plate 31 of the chassis 1, on which a mesh area is provided that matches the air outlet area of ​​the air outlet end.

[0038] It can be understood that the structure of the chassis 1 is not limited to a rectangular parallelepiped, but can also be other structures that have both larger and smaller side surfaces, such as a cylinder or a prism, or an unconventional shape, such as a special-shaped structure, without limitation; the heat dissipation target device is a device in the chassis 1 that requires air cooling, which can be an electrical component or a device such as a condenser 6 that requires air cooling.

[0039] Through the above-mentioned technical scheme, the air duct component 5 whose air inlet direction is perpendicular to the air outlet direction can cooperate with the air inlet component 2 and the air outlet component 3 to take in air from the larger area of ​​the vertical side of the chassis 1, and discharge air from the end side of the chassis 1 after air cooling the heat dissipation target device. Such air inlet and outlet method can effectively increase the air inlet area and increase the air inlet volume, so that the wind speed is low and the noise is smaller, and can also avoid the cold plate to obtain a better air cooling effect.

[0040] In one embodiment, the first side 11 has a first area, the second side 12 has a second area, the first area is greater than the second area, and the air intake area of ​​the air intake component 2 is equal to or smaller than the first area.

[0041] In this way, by disposing an air inlet component 2 with a comparable or similar air inlet area on the first side 11 with a larger area, it is possible to better utilize its area advantage to increase the air inlet volume and improve the air cooling effect.

[0042] Specifically, the air inlet area of ​​the air inlet component 2 is larger than the air outlet area of ​​the air outlet component 3. Since the side surface of the chassis 1 is smaller than the vertical surface, the air outlet area of ​​the air outlet component 3 is smaller than the air inlet area of ​​the air inlet component 2, and by providing the air outlet component 3 with a smaller air inlet area than the air inlet component 2, the air outlet speed of the air outlet component 3 can be increased.

[0043] The chassis 1 is in a rectangular parallelepiped shape, the first side 11 is a side elevation of the chassis 1 , and the second side 12 is a top surface or a bottom surface of the chassis 1 .

[0044] In a specific embodiment, the chassis 1 is preferably in a rectangular parallelepiped shape, the first side 11 is a side elevation of the chassis 1, and the second side 12 is a top surface or a bottom surface of the chassis 1. The rectangular parallelepiped structure can have a chassis 1 structure with a larger area of ​​the first side 11, and such a structure also conforms to the commonly used design shape of the chassis 1, and the design is more reasonable.

[0045] In a preferred embodiment of the air duct assembly 5, Figure 6 As shown, the air duct assembly 5 may further include an air duct housing 51 having the air duct, and the air duct housing 51 is provided with an exhaust device 52 at the air inlet end.

[0046] The air duct housing 51 is a hollow square housing, and the side close to the air outlet end of the air outlet component 3 is connected, and the side close to the air inlet end of the air inlet component 2 is also connected, so that an air duct can be formed with the air inlet direction perpendicular to the air outlet direction, and by arranging an exhaust device 52 at the air inlet end, an air flow can be formed in the channel to inhale air from the outside and pass the air through the heat dissipation target device for air cooling, and the air that takes away the heat of the heat dissipation target device is discharged by the air outlet component 3. The exhaust device 52 can be a fan. Since a large-surface air inlet is adopted, the fan is preferably a large fan with a low rotation speed and low noise. It can replace multiple small fans, and thus also has the effect of reducing costs.

[0047] Since a large-surface air inlet is adopted, the air duct shell 51 of the air duct assembly 5 is also set to a matching size, so the air duct is larger, and the air outlet end uses its entire or nearly entire side as an air inlet for air intake. Since the air inlet direction is perpendicular to the air outlet direction, the structure of the air duct will have a certain influence on the air flow velocity and increase the wind noise.

[0048] In order to reduce the loss of airflow velocity caused by the air duct structure, further, the air outlet is provided with a plurality of inclined air guide plates 53. The air guide plates 53 guide the airflow and are used to guide the airflow at the air inlet to the air outlet. Accordingly, the arrangement is inclined, and may be a 45° inclined structure, so that the horizontal airflow can be better guided to the vertical airflow, thereby reducing the effect of the air duct structure on the air velocity loss to reduce wind noise.

[0049] Please refer to Figure 5 As shown, in an embodiment of the present application, the air inlet component 2 includes a filter assembly detachably connected to the chassis 1; the filter assembly includes an outer filter 21 and an inner filter 22 that are overlapped, and the mesh diameter of the inner filter 22 is smaller than the mesh diameter of the outer filter 21.

[0050] The filter assembly is used to filter the air entering the air duct of the chassis 1, mainly to filter dust and the like, to prevent dust from entering the chassis 1 and affecting the normal operation of the internal components. The filter assembly is connected to the chassis 1 by a detachable connection method such as a threaded connection or a snap-on connection, so that the filter assembly can be easily disassembled and assembled, and it is convenient to observe whether the filter is dirty, and to clean it quickly and conveniently. The outer filter 21 is mainly used to filter substances with larger particle sizes, while the inner filter 22 is mainly used to filter smaller substances such as dust to prevent dust from entering.

[0051] The existing cold plate is a single-sided air-cooled cold plate, with fins on one side of the cold plate and optical heating devices 9 and electrical heating devices 10 installed on the other side. The heat conducted by the fins is then removed by air cooling to achieve air cooling and heat dissipation. Such a heat dissipation structure has low utilization rate of the cold plate.

[0052] Therefore, in order to improve the utilization of the cold plate, please refer to Figures 7 - 9 As shown, in an embodiment of the present application, a cold plate component 8 is also included, and a cooling pipeline 81 is built in the cold plate component 8. The cooling pipeline 81 forms cooling surfaces on both side surfaces of the cold plate component 8, and an optical heating device 9 and / or an electrical heating device 10 of a laser welder are installed on the cooling surfaces.

[0053] By building a cooling pipe 81 into the cold plate component 8, the cooling pipe 81 is filled with a refrigerant or a coolant, and the cooling pipe 81 is connected to an external cooling system for circulation, so that continuous cooling can be performed. Due to the built-in structure, both sides of the cooling pipe 81 can be used as cooling surfaces to install the optical heating device 9 and / or the electrical heating device 10. The installation method can be selected according to actual conditions or needs. For example, the optical heating device 9 is installed on one side and the electrical heating device 10 is installed on the other side. Such an installation method can separate the two from each other and the layout is more reasonable.

[0054] In some embodiments of the cooling pipeline, the cooling pipeline 81 may be filled with a coolant such as cooling water and achieve cooling through the coolant, or may be filled with a refrigerant or a refrigerant and cooperate with a refrigeration system to achieve cooling.

[0055] Preferably, in an embodiment of the present application, the cooling pipeline 81 is a refrigeration pipeline, which extends out of the cold plate component 8 and is connected to a compressor 7 and a condenser 6; and the heat dissipation target device is a condenser.

[0056] The condenser 6 is a heat generating device in the refrigeration system of the cold plate. By air-cooling the condenser 6 on the facade side, the air inlet area can be adapted to the condenser 6 with a larger surface area, and the air-cooling effect can be improved. Specifically, the refrigeration system of the cold plate mainly includes components such as a compressor 7, an expansion valve, a refrigeration pipeline, and a condenser 6. Since this application does not involve improvements to the refrigeration system, a refrigeration structure with the same composition and principle as the existing refrigeration system is still used, so it will not be described here.

[0057] In the specific implementation process, the cooling pipeline 81 is serpentinely arranged inside the cold plate component 8. It can be embedded inside, or it can be pre-buried inside when the cold plate component 8 is manufactured and die-cast, or other processes are not limited.

[0058] In addition, combined Figure 5 , Figure 9 and Figure 10 As shown, in order to make the internal layout of the chassis 1 more reasonable and compact based on the air cooling structure, the optical fiber winding drum 100 and the cold plate are arranged inside the third side 13 of the chassis 1, and the third side 13 and the first side 11 are opposite to each other; the compressor 7 connected to the cooling pipeline 81 and the air duct assembly 5 are installed at the bottom of the chassis 1; the control circuit assembly is arranged on the first side 11. Through such an arrangement, the internal space layout of the chassis 1 of the handheld laser welder is reasonable, the structure is compact, the volume is small and the space utilization rate is high.

[0059] Preferably, the first side 11 is the right side of the chassis 1, the second side 12 is the top of the chassis 1, and the third side 13 is the right side of the chassis 1. Correspondingly, a cold plate and a fiber optic disk are arranged on the left side of the chassis 1, and a filter assembly and a control circuit assembly used as an air inlet component 2 are arranged on the right side. A compressor 7 and an air duct assembly 5 are installed at the bottom. The air duct assembly 5 is located between the cold plate component 8 and the condenser 6, and the compressor 7 is located on the back side of the control electrical assembly.

[0060] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A handheld laser welder, characterized in that: The invention comprises a chassis (1) and an air duct assembly (5) arranged in the chassis (1), wherein the chassis (1) is provided with an air inlet component (2) on a first side (11); the air duct assembly (5) comprises an air duct, a heat dissipation target device is arranged between the air duct and the air inlet component (2), the air inlet end of the air duct is connected to the air inlet component (2), the air outlet end of the air duct is connected to the air outlet component (3) arranged on the second side (12) of the chassis (1), and the air inlet direction of the air inlet end is perpendicular to the air outlet direction of the air outlet end, and the first side (11) and the second side (12) are not opposite to each other.

2. A handheld laser welder as claimed in claim 1, characterized in that: The first side (11) has a first area, the second side (12) has a second area, the first area is greater than the second area, and the air intake area of ​​the air intake component (2) is equal to or smaller than the first area.

3. A handheld laser welder as claimed in claim 2, characterized in that: The air inlet area of ​​the air inlet component (2) is greater than the air outlet area of ​​the air outlet component (3).

4. A handheld laser welder as claimed in claim 2, characterized in that: The chassis (1) is in the shape of a rectangular parallelepiped, the first side (11) is a side elevation of the chassis (1), and the second side (12) is a top surface or a bottom surface of the chassis (1).

5. A handheld laser welder as claimed in claim 1, characterized in that: The air duct assembly (5) further comprises an air duct housing (51) having the air duct, and the air duct housing (51) is provided with an exhaust device (52) at the air inlet end.

6. A handheld laser welder as claimed in claim 5, characterized in that: The air outlet end is provided with a plurality of inclined air guide plates (53).

7. A handheld laser welder as claimed in claim 1, characterized in that: The air inlet component (2) comprises a filter assembly detachably connected to the chassis (1); The filter assembly comprises an outer filter screen (21) and an inner filter screen (22) which are arranged in an overlapping manner, and the mesh aperture of the inner filter screen (22) is smaller than the mesh aperture of the outer filter screen (21).

8. A handheld laser welder as claimed in any one of claims 1 to 7, characterized in that: It also includes a cold plate component (8), wherein the cold plate component (8) has a built-in cooling pipeline (81), and the cooling pipeline (81) enables the two side plate surfaces of the cold plate component (8) to form cooling surfaces, and an optical heating device (9) and / or an electrical heating device (10) of a laser welder is installed on the cooling surfaces.

9. A handheld laser welder as claimed in claim 8, characterized in that: The cooling pipeline (81) is a refrigeration pipeline, which extends out of the cold plate component (8) and is connected to a compressor (7) and a condenser (6); The heat dissipation target device is a condenser (6).

10. A handheld laser welder as claimed in claim 9, characterized in that: It also includes an optical fiber winding drum (100) and a control circuit assembly, wherein the optical fiber winding drum (100) and the cold plate are arranged inside the third side (13) of the chassis (1), and the third side (13) and the first side (11) are opposite to each other; the compressor (7) and the air duct assembly (5) are installed at the bottom of the chassis (1); and the control circuit assembly is arranged on the first side (11).

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