A laser welding device and a cell welding system

Abstract

The utility model discloses a laser welding device, including focal length adjusting module, welding module and outer protection mechanism, the welding module is installed in the output of focal length adjusting module, the inside of outer protection mechanism and be located the just below welding module is equipped with welding lifting module, the below of welding lifting module is the welding area, and the inside of inner protection cover is equipped with in the below of welding lifting module and be located the outside of welding area. Through outer protection mechanism and inner protection cover, inner protection cover is located the inside of outer protection mechanism, and the welding area is placed in the inside of inner protection cover, and the protection is done to the welding, and inner protection cover can follow welding lifting module ascending and descending, and welding lifting module can ascend and descend relative to the welding area, make it adapt to different to be welded product, and product compatibility is high, and the protection structure is simple, and the component modularization, and the type change is convenient and maintenance is simple, and the yield of product is greatly improved, and the resource energy waste is reduced, and the whole line OEE is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically to a laser welding device and a battery cell welding system. Background Technology

[0002] Current laser welding processes often do not employ protective measures. Due to the presence of lasers inside the welding machine and the need for material import and export, the machine is often protected as a whole. However, overall protection is difficult, costly, and ineffective. In particular, the presence of detection cameras inside the equipment can interfere with the welding process, often resulting in severe light pollution that seriously affects the health of workers. Alternatively, complex mechanisms can be used, but these complex mechanisms often mean high costs to avoid pollution.

[0003] For example, Chinese patent application CN112705849A, entitled "A Laser Welding Device and Method for Optical Fiber and Insert Body," specifically discloses "an adjustment frame, a laser welding device, a laser ranging device, and a control device; the laser ranging device is equipped with a detector array; the adjustment frame is equipped with an insert body fixing device, on which an insert body is detachably connected; the laser welding device is located on top of the insert body, with its laser emission end corresponding to the insert body; the detector array is located between the laser welding device and the insert body, with the laser emission position of the laser welding device and the detector array on the same plane; the detector array has laser emission holes, the positions of which correspond to the laser emission positions of the laser welding device; the laser welding device and the laser ranging device are both electrically connected to the control device." The aforementioned existing patent technology does not include corresponding protective measures for the welding area, thus potentially leading to light pollution and other problems that seriously affect workers' health. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to provide a protective device for laser welding.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A laser welding device includes a focus adjustment module, a welding module, and an outer protective mechanism.

[0007] The welding module is installed at the output end of the focus adjustment module;

[0008] The outer protective mechanism has a welding lifting module located inside and directly below the welding module. Below the welding lifting module is the welding area, and below the welding lifting module and outside the welding area is an inner protective cover.

[0009] This application utilizes an outer protective mechanism and an inner protective cover. The inner protective cover is located inside the outer protective mechanism, while the welding area is placed inside the inner protective cover to protect the welding process. At the same time, the inner protective cover can rise and fall with the welding lifting module. The welding lifting module can rise and fall relative to the welding area, making it adaptable to different products to be welded, resulting in high product compatibility.

[0010] As a further embodiment of this utility model: the welding module includes a laser welder, which is installed on the output end of the focus adjustment module, and a welder slot is provided on the top of the outer protective mechanism. The laser of the laser welder can pass through the welder slot and the welding lifting module to act on the welding area.

[0011] As a further embodiment of this utility model, the outer protective mechanism is further provided with a welding protective gas mechanism that can act on the welding area.

[0012] As a further embodiment of this utility model: the welding protective gas mechanism includes a venting valve block, a protective gas mechanism, and a welding protective gas pipe. The welding protective gas pipe is installed on the welding lifting module, the protective gas mechanism is installed inside the outer protective mechanism, and the venting valve block is installed on the top of the outer protective mechanism. The protective gas mechanism and the welding protective gas pipe exchange gas with the outside through the venting valve block.

[0013] As a further embodiment of this utility model, the outlet of the welding protective gas pipe faces the welding area.

[0014] As a further embodiment of this utility model: the welding lifting module is also equipped with a dust removal mechanism, the outlet end of which faces the welding area, and the other end exchanges gas with the outside through a ventilation valve block.

[0015] As a further embodiment of this utility model: the focal length adjustment module includes a lifting guide rail mounted on the welding frame, and a driving component for driving the welding module to slide on the lifting guide rail is provided above the lifting guide rail.

[0016] As a further embodiment of this utility model: the welding lifting module includes a lifting platform and a second lifting guide rail installed on the outer protective mechanism. The outer protective mechanism is provided with a second driving component for driving the lifting platform to slide on the second lifting guide rail.

[0017] As a further embodiment of this utility model: the inner protective cover is an accordion-style protective cover, which is ring-shaped and installed at the bottom of the welding lifting module.

[0018] This utility model also discloses a battery cell welding system, including the aforementioned laser welding device, wherein the battery cell can be transported to the welding area inside the outer protective mechanism via a logistics line.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This application utilizes an outer protective mechanism and an inner protective cover. The inner protective cover is located inside the outer protective mechanism, while the welding area is placed inside the inner protective cover, thus protecting the welding process. The inner protective cover can rise and fall with the welding lifting module. The welding lifting module can rise and fall relative to the welding area, adapting to different products to be welded, resulting in high product compatibility. This application offers lower difficulty and cost in protecting the welding area compared to traditional whole-machine protection methods. It can isolate detection cameras and lasers outside the protective mechanism, preventing interference with laser welding.

[0021] The protective structure of this application is simple, the components are modular, the product compatibility is high, the replacement is convenient and the maintenance is simple, which greatly improves the product yield, reduces the waste of resources and energy, and significantly improves the OEE of the entire production line. It greatly reduces both the workload and the difficulty of the work, improves production efficiency, and creates great economic and social value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the laser welding device according to an embodiment of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of the laser welding device according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Partial structural diagram;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Welding frame; 2. Focus adjustment module; 3. Laser welder; 4. Vent valve block; 5. Shielding gas mechanism; 6. Welding lifting module; 7. Welding shielding gas pipe; 8. Dust removal mechanism; 9. Welding protection cover; 10. Inner protective cover; 11. Product; 12. Outer protective mechanism. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1

[0029] Reference Figure 1 and Figure 2 A laser welding device includes a welding frame 1, a focus adjustment module 2, a laser welder 3, a venting valve block 4, a protective gas mechanism 5, a welding lifting module 6, a welding protective gas pipe 7, a dust removal mechanism 8, a welding protective cover 9, an inner protective cover 10, and an outer protective mechanism 12.

[0030] The focus adjustment module 2 is detachably mounted on the welding machine frame 1 via bolts or pins, while the laser welder 3 is mounted on the output end of the focus adjustment module 2. The focus adjustment module 2 can be used to adjust the laser welder 3 to the specified position. The outer protective mechanism 12 is mounted below the focus adjustment module 2 and the laser welder 3, while the venting valve block 4 is mounted outside the outer protective mechanism 12. The protective gas mechanism 5, welding lifting module 6, welding protective gas pipe 7, dust removal mechanism 8, welding protective cover 9, and inner protective cover 10 are all mounted inside the outer protective mechanism 12. The outer protective mechanism 12 protects the welding area separately and isolates detection equipment such as the laser welder 3 from the outside, thereby preventing it from affecting the welding.

[0031] Reference Figure 1 The welding frame 1 has an overall inverted "U" shape. It includes two vertical rods and a horizontal rod connecting the two vertical rods. Mounting holes are provided at the bottom of the two vertical rods for installation at designated locations on the logistics line (not shown in the figure). At least one set of mounting plates for connecting the focus adjustment module 2 is provided on the horizontal rod. It should be noted that this application can provide two sets of mounting plates (e.g., ...). Figure 1 (as shown), and then connect two sets of laser welders 3 and outer protective mechanism 12. The specific number depends on the needs of the products in the logistics line, and this application does not limit it.

[0032] Reference Figure 1 and Figure 2 The focus adjustment module 2 includes a lifting guide rail mounted on the welding frame 1. A slider is provided on one side of the laser welder 3 and slidably connected to the lifting guide rail. A drive component is located above the lifting guide rail. The drive component can be a linear electric cylinder. The drive component can drive the welding module to slide on the lifting guide rail, thereby adjusting the position of the laser welder 3. Alternatively, the focus adjustment module 2 can be a ball screw. The laser welder 3 is mounted on a nut on the ball screw, and the laser welder 3 can also be adjusted in height by the ball screw.

[0033] Reference Figure 1 and Figure 2 One side of the laser welder 3 can be detachably installed on the focus adjustment module 2. A welder slot is provided on the top of the outer protective mechanism 12. The laser of the laser welder 3 welding head can pass through the welder slot and the welding lifting module 6 to act on the welding area.

[0034] Reference Figure 1and Figure 2 The venting valve block 4 is detachably installed on the top of the outer protective mechanism 12 by bolts or pins. The venting valve block 4 can exchange gas with the outside. The outlet of the venting valve block 4 is connected to the protective gas mechanism 5, the welding protective gas pipe 7 and the dust removal mechanism 8. Therefore, the protective gas mechanism 5, the welding protective gas pipe 7 and the dust removal mechanism 8 can exchange gas with the outside through the venting valve block 4 respectively.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The welding lifting module 6 includes a lifting platform and a second lifting guide rail mounted on the outer protective mechanism 12. The outer protective mechanism 12 is equipped with a second driving component for driving the lifting platform to slide on the second lifting guide rail. The second driving component can be a linear electric cylinder, which can drive the lifting platform to rise and fall along the second lifting guide rail. The second lifting guide rail is arranged parallel to the first lifting guide rail. Alternatively, the second lifting guide rail and the linear electric cylinder can be replaced with a ball screw. The lifting platform is mounted on a nut on the ball screw, and the ball screw can also drive the lifting platform to rise and fall. A welding protective cover 9 is provided at the bottom of the lifting platform.

[0036] It should be noted that both the welding protective gas pipe 7 and the dust removal mechanism 8 are installed on the lifting platform, with their air outlets facing the welding area at the bottom of the lifting platform. This allows for the blowing of protective gas and dust removal during welding.

[0037] Reference Figure 1 The bottom of the lifting platform is equipped with an inner protective cover 10. The inner protective cover 10 adopts a bellows-style protective cover and is in the shape of a ring. It can rise and fall with the lifting platform. When the inner protective cover 10 is lowered, it can cover the entire welding area to achieve the protection effect during welding.

[0038] Example 2

[0039] This embodiment discloses a battery cell welding system, including the laser welding device in Embodiment 1. The battery cell can be transported to the welding area inside the outer protective mechanism 12 through a material flow line (not shown in the figure), and then the electrode tab and cover plate are welded.

[0040] The specific operating principle of this application is as follows:

[0041] The protective gas mechanism 5, welding protective gas pipe 7, and dust removal mechanism 8 exchange gases with the outside through the venting valve block 4. The product (i.e., the battery cell) is transported to its destination via a logistics line (not shown).

[0042] The focus adjustment module 2 is adjusted to measure the focus, and the corresponding position of the laser welder 3 is adjusted. The welding lifting mechanism 6 moves downward with the inner protective cover 10, the welding protective cover 9, and the welding protective gas pipe 7, ensuring that the welding protective cover 9 presses firmly against the product. The protective gas mechanism 5 is opened, the dust removal mechanism 8 is activated, and the welding protective gas pipe 7 is opened. After a delay of 0.2 seconds to ensure that the welding surface of the product 11 is filled with protective gas, the laser welder 3 is opened to start the welding operation.

[0043] After the laser welder 3 completes the welding operation, the welding protective gas pipe 7 and the protective gas mechanism 5 are shut off. The inner protective cover 10, the welding protective cover 9, the welding protective gas pipe 7, and the dust removal mechanism 8 are raised under the drive of the welding lifting module 6. The dust removal mechanism 8 is shut off, and the logistics line carries the product 11 into the next process. This completes the welding dust removal and protection function of the product.

[0044] This protective function has a simple structure, modular components, high product compatibility, convenient replacement and simple maintenance. It protects the physical and mental health of workers, greatly improves product yield, reduces waste of resources and energy, and significantly improves the overall OEE of the production line. It greatly reduces both the workload and the difficulty of the work, improves production efficiency, and creates great economic and social value.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A laser welding apparatus, characterized in that, Includes a focus adjustment module, a welding module, and an external protective mechanism: The welding module is installed at the output end of the focus adjustment module; A welding lifting module is located inside the outer protective mechanism and directly below the welding module. Below the welding lifting module is the welding area, and an inner protective cover is located below the welding lifting module and outside the welding area.

2. The laser welding apparatus according to claim 1, characterized in that: The welding module includes a laser welder, which is installed on the output end of the focus adjustment module and has a welder slot on the top of the outer protective mechanism. The laser of the laser welder can pass through the welder slot and the welding lifting module to act on the welding area.

3. The laser welding apparatus according to claim 1, characterized in that: The outer protective mechanism is also equipped with a welding protective gas mechanism that can act on the welding area.

4. The laser welding apparatus according to claim 3, characterized in that: The welding shielding gas mechanism includes a venting valve block, a shielding gas mechanism, and a welding shielding gas pipe. The welding shielding gas pipe is installed on the welding lifting module, the shielding gas mechanism is installed inside the outer protective mechanism, and the venting valve block is installed on the top of the outer protective mechanism. The shielding gas mechanism and the welding shielding gas pipe exchange gas with the outside through the venting valve block.

5. The laser welding apparatus according to claim 4, characterized in that: The outlet of the welding protective gas pipe faces the welding area.

6. The laser welding apparatus according to claim 4, characterized in that: The welding lifting module is also equipped with a dust removal mechanism. The outlet end of the dust removal mechanism faces the welding area, and the other end exchanges gas with the outside through a ventilation valve block.

7. The laser welding apparatus according to claim 1, characterized in that: The focal length adjustment module includes a lifting guide rail mounted on the welding frame, and a driving component is provided above the lifting guide rail for driving the welding module to slide on the lifting guide rail.

8. The laser welding apparatus according to claim 1, characterized in that: The welding lifting module includes a lifting platform and a second lifting guide rail installed on the outer protective mechanism. The outer protective mechanism is provided with a second driving component for driving the lifting platform to slide on the second lifting guide rail.

9. A laser welding apparatus according to claim 1, characterized in that: The inner protective cover is a bellows-style protective cover, which is ring-shaped and installed at the bottom of the welding lifting module.

10. A battery cell welding system, characterized in that, Including the laser welding apparatus as described in any one of claims 1-9, the battery cell can be transported via a logistics line to the welding area inside the outer protective structure.

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