Air handheld laser welding machine

Abstract

The utility model provides an air handheld laser welding machine, which belongs to the field of laser welding machines, and comprises a handheld welding head and a rack, the bottom of the rack is provided with a walking mechanism, and the middle part of the rack is sequentially provided with a lower storage space, a middle storage space and an upper storage space from bottom to top through two layers of storage racks; a distribution box and a controller are placed in the lower storage space, and an optical fiber laser is placed in the middle storage space and connected with a handheld welding head through a cable. An air and nitrogen conversion device is placed in the upper storage space, the air inlet end of the air and nitrogen conversion device is communicated with the outside or a compressed air tank through an air inlet pipeline, and the air outlet end of the air and nitrogen conversion device is communicated with the handheld welding head through a nitrogen pipeline and conveys nitrogen to the handheld welding head. According to the utility model, dry and clean compressed air without water and oil can be directly introduced, and then high-purity nitrogen is directly output through an internal conversion structure, so that the use cost of the handheld laser welding machine is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the field of laser welding machines, and in particular relates to an air handheld laser welding machine. Background Art

[0002] Laser welding machines are modern welding equipment that utilize a high-energy laser beam to heat the material, causing it to partially melt and form a weld seam, thereby completing the process of joining metals or other materials. With the advancement of technology, handheld laser welding machines have emerged. Their combination of portability, high-quality welds, and ease of operation have made them a new favorite across numerous industries. From the assembly of precision electronic components to the repair of large outdoor structures, handheld laser welding machines, with their superior performance, are proving effective in a wide range of welding scenarios, ushering in a new era in welding technology.

[0003] However, the application of existing handheld laser welding machines still has certain limitations: since laser welding requires the use of high-purity nitrogen (the existing handheld laser welding machine requires at least two 40L cans of high-purity nitrogen with a purity of ≥99.99% for continuous welding for 8 hours), and the price of high-purity nitrogen on the market is very expensive, it not only increases the operating costs of enterprises, but also restricts the adoption of handheld laser welding technology by small and medium-sized enterprises and emerging fields, slowing down the pace of technological innovation and industrial upgrading.

[0004] Therefore, how to effectively reduce the supply cost of high-purity nitrogen or develop alternative low-cost shielding gas solutions has become a technical problem and market focus that needs to be broken through in the field of handheld laser welding machines. Utility Model Content

[0005] The technical problem solved by the utility model is to provide an air handheld laser welding machine, and enable it to be directly connected to water-free, oil-free, dry and clean compressed air to provide nitrogen for the laser welding process, thereby effectively reducing the use cost of the handheld laser welding machine and promoting the development of the handheld laser welding machine.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: an air handheld laser welding machine, which includes a handheld welding head and a frame, a walking mechanism is provided at the bottom of the frame, and the middle part of the frame is sequentially arranged from bottom to top through two layers of shelves, namely a lower storage space, an intermediate storage space, and an upper storage space, wherein a distribution box and a controller are placed in the lower storage space, a fiber laser is placed in the intermediate storage space, and the fiber laser is connected to the handheld welding head via a cable; an air and nitrogen conversion device is placed in the upper storage space, the air inlet end of the air and nitrogen conversion device is connected to the outside world or a compressed air tank through an air inlet pipe, and the air outlet end of the air and nitrogen conversion device is connected to the handheld welding head through a nitrogen pipe, and nitrogen is supplied to the handheld welding head. At this time, since the air and nitrogen conversion device is built into the frame, the air and nitrogen conversion device can be directly connected to the water-free and oil-free dry and clean compressed air, and then directly output high-purity nitrogen with a purity of ≥99.99% through the internal conversion structure, thereby effectively reducing the use cost of the handheld laser welding machine and promoting the development of the handheld laser welding machine.

[0007] Furthermore, a display screen and operation buttons are provided on the top of the rack. Both the display screen and the operation buttons are communicatively connected to the controller, and the entire device can be controlled by manipulating the operation buttons, and information such as the device working status can be displayed through the display screen.

[0008] Furthermore, the nitrogen pipeline is equipped with a gas purity analyzer, which is connected to the controller. During the conversion of air into nitrogen, the gas purity analyzer can be controlled to transmit the gas purity results it detects to the controller, which then controls the controller to output the results to a display screen. This allows operators to check the display screen before welding to determine whether the output nitrogen meets the required purity. Once the purity meets the requirements, normal use can be resumed.

[0009] Furthermore, the nitrogen pipeline is equipped with a pressure detector, which is communicatively connected to the pressure alarm unit and the controller. Thus, during operation of the present invention, the pressure of the incoming nitrogen can be monitored in real time via the pressure detector. When the pressure is detected to be below a set value, a corresponding signal is transmitted to the pressure alarm unit and the controller, thereby suspending the operation of the handheld welding head and sounding an alarm, preventing it from continuing to operate when the gas is insufficient, thereby avoiding damage to the equipment.

[0010] Further, the air-nitrogen conversion device includes at least one pressure tank. One end of the pressure tank is the air inlet end, and an air inlet for connecting an air inlet pipe is provided at the air inlet end; the other end of the pressure tank is the air outlet end, and an air outlet for connecting a nitrogen pipe is provided at the air outlet end; a carbon molecular sieve is arranged inside the pressure tank, and the carbon molecular sieve can only adsorb oxygen, carbon dioxide, moisture, etc. in the air and cannot adsorb nitrogen, so that the whole device can output qualified nitrogen.

[0011] Further, the air-nitrogen conversion device includes two pressure tanks to ensure that the nitrogen output speed can meet the use requirements of the weld protection gas.

[0012] Further, a pressure gauge is installed on the pressure tank, and the air pressure inside the pressure tank is displayed in real time through this pressure gauge.

[0013] Further, the air handheld laser welding machine further includes a wire feeder, and the wire feeder provides welding wire for the handheld welding head. The wire feeder preferably adopts a three-wire feeder on the market, and the three welding wires output at the nozzle of the three-wire feeder are in a "pin" shape structure. The diameter of the welding wire at the upper end is smaller than the diameters of the two welding wires at the lower end, and the wire feeding speed of the welding wire at the upper end is faster than the wire feeding speeds of the two welding wires at the lower end to ensure sufficient weld height, width and quality.

[0014] Further, a water chiller is placed in the lower storage space, and the water chiller cools the handheld welding head and the fiber laser.

[0015] Further, the traveling mechanism is a universal wheel, and the universal wheel preferably adopts a structure with a braking function.

[0016] From the above technical solutions, it can be seen that the present utility model has the following advantages: Since the present utility model is configured with an air-nitrogen conversion device, it can directly connect the air-nitrogen conversion device to anhydrous, oil-free, dry and clean compressed air, and then directly output high-purity nitrogen with a purity ≥ 99.99% through an internal conversion structure, thereby effectively reducing the use cost of the handheld laser welding machine and promoting the development of the handheld laser welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required to be used in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the air and nitrogen conversion device in Example 1 of the present utility model.

[0020] In the figure: 1. Frame; 2. Traveling mechanism; 3. Water cooler; 4. Fiber laser; 5. Air and nitrogen conversion device; 6. Display screen; 7. Operation button; 8. Pressure tank; 9. Pressure gauge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1 、 Figure 2 As shown, this embodiment provides an air handheld laser welding machine, which includes a handheld welding head and a frame 1. The bottom of the frame 1 is provided with a walking mechanism 2, and the walking mechanism 2 preferably uses universal wheels. The top of the frame 1 is provided with a display screen 6 and an operation button 7. The display screen 6 and the operation button 7 are both connected to the controller in communication, and the entire device can be controlled by operating the operation button 7. The display screen 6 displays information such as the device's working status. The middle part of the frame 1 is sequentially arranged from bottom to top through two layers of shelves, which are divided into a lower storage space, an intermediate storage space, and an upper storage space. The lower storage space is provided with a distribution box, a controller, and a water cooler 3. The intermediate storage space is provided with a fiber laser 4, and the fiber laser 4 is connected to the handheld welding head via a cable. The upper storage space is provided with an air and nitrogen conversion device 5. The air inlet end of the air and nitrogen conversion device 5 is connected to the outside world or a compressed air tank through an air inlet pipe. The air outlet end of the air and nitrogen conversion device 5 is connected to the handheld welding head through a nitrogen pipe, and nitrogen is supplied to the handheld welding head.

[0024] Specifically, the air and nitrogen conversion device 5 includes at least one pressure tank 8, one end of the pressure tank 8 is the air inlet end, and the air inlet end is provided with an air inlet for connecting to the air inlet pipe; the other end of the pressure tank 8 is the air outlet end, and the air outlet end is provided with an air outlet for connecting to the nitrogen pipe; the interior of the pressure tank 8 is provided with a carbon molecular sieve, and the carbon molecular sieve can only adsorb oxygen, carbon dioxide, moisture, etc. in the air, and cannot adsorb nitrogen, so that the entire device can output qualified nitrogen.

[0025] In addition, as a preference, in the first embodiment, a pressure gauge 9 is further installed on the pressure tank 8, and the air pressure inside the pressure tank 8 is displayed in real time through the pressure gauge 9; flow valves are provided on the intake pipeline and the nitrogen pipeline, and the flow rate of the corresponding gas is controlled by controlling the corresponding flow valve. A gas purity analyzer and a gas pressure detector are provided on the nitrogen pipeline, the gas purity analyzer is communicatively connected to the controller, and the gas pressure detector is communicatively connected to the gas pressure alarm unit and the controller. At this time, during the process of converting air into nitrogen, the gas purity analyzer can be controlled to transmit the detected gas purity result to the controller first, and then the controller is controlled to output the result to the display screen 6. In this way, when the operator is performing welding operations, the display screen 6 can be checked first to determine whether the purity of the output nitrogen meets the requirements, and after it meets the requirements, it can be used normally. Moreover, the air pressure of the input nitrogen can be monitored in real time through the gas pressure detector, and when it is detected that the air pressure is lower than the set value, a corresponding signal is transmitted to the gas pressure alarm unit and the controller to suspend the operation of the handheld welding head and issue an alarm, preventing it from still working when the gas is insufficient, thereby avoiding damage to the equipment.

[0026] Based on this, since the first embodiment is equipped with an air-nitrogen conversion device 5, the air-nitrogen conversion device 5 can be directly connected to anhydrous, oil-free, dry and clean compressed air, and then through an internal conversion structure, directly output high-purity nitrogen with a purity ≥ 99.99%, thereby effectively reducing the use cost of the handheld laser welding machine and promoting the development of the handheld laser welding machine.

[0027] Embodiment 2

[0028] The second embodiment also provides a handheld laser welding machine for air. Compared with the first embodiment, the difference in the second embodiment is that it further includes a wire feeder for providing welding wire for the handheld welding head. The wire feeder preferably adopts a three-wire feeder on the market, and the three welding wires output at the nozzle of the three-wire feeder are in a "pin" shape structure. The diameter of the welding wire at the upper end is smaller than the diameters of the two welding wires at the lower part, and the wire feeding speed of the welding wire at the upper end is faster than the wire feeding speeds of the two lower welding wires, so as to ensure sufficient weld height, width and quality.

[0029] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air handheld laser welding machine, comprising a handheld welding head and a frame (1), wherein a walking mechanism (2) is provided at the bottom of the frame (1); characterized in that: The middle part of the rack (1) is sequentially arranged from bottom to top into a lower storage space, an intermediate storage space, and an upper storage space through two layers of storage racks. A distribution box and a controller are placed in the lower storage space. A fiber laser (4) is placed in the intermediate storage space. The fiber laser (4) is connected to a handheld welding head through a cable. An air and nitrogen conversion device (5) is placed in the upper storage space. The air inlet end of the air and nitrogen conversion device (5) is connected to the outside world or a compressed air tank through an air inlet pipe, and the air outlet end of the air and nitrogen conversion device (5) is connected to the handheld welding head through a nitrogen pipe.

2. The air handheld laser welding machine according to claim 1, characterized in that: A display screen (6) and an operating button (7) are provided on the top of the frame (1), and both the display screen (6) and the operating button (7) are communicatively connected to the controller.

3. The air handheld laser welding machine according to claim 2, characterized in that: The nitrogen pipeline is provided with a gas purity analyzer, which is communicatively connected to the controller.

4. The air handheld laser welding machine according to claim 1, characterized in that The nitrogen pipeline is provided with an air pressure detector, which is communicatively connected to the air pressure alarm unit and the controller.

5. The air handheld laser welding machine according to claim 1, characterized in that: The air and nitrogen conversion device (5) comprises at least one pressure tank (8), one end of the pressure tank (8) being an air inlet end, the air inlet end being provided with an air inlet port for connecting to an air inlet pipe; the other end of the pressure tank (8) being an air outlet end, the air outlet end being provided with an air outlet port for connecting to a nitrogen pipe; and a carbon molecular sieve being provided inside the pressure tank (8).

6. The air handheld laser welding machine according to claim 5, characterized in that: The air and nitrogen conversion device (5) includes two pressure tanks (8).

7. The air handheld laser welding machine according to claim 5, characterized in that: A pressure gauge (9) is installed on the pressure tank (8).

8. The air handheld laser welding machine according to claim 1, characterized in that: The air handheld laser welding machine also includes a wire feeder.

9. The air handheld laser welding machine according to claim 1, characterized in that: A water cooler (3) is placed in the lower storage space.

10. The air handheld laser welding machine according to claim 1, characterized in that: The walking mechanism (2) is a universal wheel.

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