Laser welding equipment

Abstract

The invention discloses laser welding equipment, and relates to the technical field of laser welding, the laser welding equipment comprises an equipment main body, a laser welding head, a positioning mechanism and a product tool, and the equipment main body is provided with a feeding channel; the laser welding head is movably mounted on the equipment main body; the positioning mechanism is mounted on the equipment body; the product tool is movably arranged in the feeding channel and used for fixing a product to be assembled. In the machining state, the positioning mechanism is connected with the product tool to ensure the stability of the product, after welding is completed, the positioning mechanism is separated from the product tool, and the product tool is moved out of the feeding channel. Therefore, a plurality of devices do not need to be serially connected, the debugging and maintenance time of the device is greatly reduced, and the operation of the device is more efficient and reliable. The position of the movable product tool can be flexibly adjusted, strict height and specification unification does not need to be carried out on different devices, and therefore the customization cost of the devices is reduced, the wiring period of the devices is shortened, and the flexibility and reliability of the devices are improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a laser welding device. Background Art

[0002] The battery module is formed by assembling multiple batteries. The battery module assembly includes multiple steps, such as tab welding, laser cleaning, connecting piece welding, nickel sheet welding, and cross-connect aluminum bar welding. Different steps require different equipment. To improve production efficiency, the existing battery module assembly connects multiple devices in series according to the assembly sequence to form an automated production line.

[0003] However, the existing automated production lines for battery modules have some significant defects. First, since different welding equipment may come from different manufacturers, in order to maintain the continuity of the assembly line, it is necessary to ensure that the same material inlet and outlet heights are maintained between different welding equipment, and the specifications of accessories such as rails and processing fixed platforms need to be unified. This leads to the need to customize equipment specifications according to needs, which increases the cost and wiring cycle of the automated production line. Secondly, multiple welding equipment need to be connected in series to form a linear assembly line, which requires a large amount of factory space and is not convenient to move or adjust the position of one of the equipment alone, which brings many inconveniences to equipment debugging. Summary of the invention

[0004] The main purpose of the present invention is to provide a laser welding device, which aims to solve the problems of high assembly line cost, long wiring cycle and inconvenient equipment debugging during the existing battery module assembly.

[0005] To achieve the above object, the present invention provides a laser welding device, which includes:

[0006] An equipment body, wherein the equipment body is provided with a feed channel;

[0007] A laser welding head, the laser welding head is movably mounted on the device body;

[0008] A positioning mechanism, the positioning mechanism being mounted on the device body; and

[0009] A product tooling, which is movably disposed in the feed channel and is used to fix the product to be assembled, and has a processing state and a feeding and discharging state;

[0010] Among them, in the processing state, the positioning mechanism is connected to the product tooling, and the laser welding head welds the product on the product tooling; in the feeding and discharging state, the positioning mechanism is separated from the product tooling, and drives the product tooling to move the product tooling and the product out of the feeding channel.

[0011] In one embodiment of the present invention, the positioning mechanism is provided with a limiting portion, and the product tooling is provided with a matching portion. At least one of the limiting portion and the matching portion is movably arranged relative to the other. In the processing state, the limiting portion and the matching portion are limitedly matched, and in the feeding and discharging state, the limiting portion and the matching portion are separated.

[0012] In one embodiment of the present invention, the positioning mechanism includes a positioning block, the limiting portion is a limiting groove, the limiting groove is arranged on the surface of the positioning block, and the matching portion is a positioning column. In the processing state, the positioning column is embedded in the limiting groove.

[0013] In one embodiment of the present invention, the positioning mechanism also includes a driving member, which is drivably connected to the positioning block. The driving member drives the positioning block to drive the limiting groove to move toward or away from the positioning column. The positioning column is embedded in the limiting groove or separated from the limiting groove to switch the processing state or the feeding and discharging state.

[0014] In one embodiment of the present invention, the positioning mechanism is provided with a plurality of limiting portions, and the product tooling is provided with a plurality of matching portions. In the processing state, each of the limiting portions is limitedly matched with a matching portion.

[0015] In one embodiment of the present invention, the laser welding equipment further comprises a displacement sensor, which is disposed on the positioning mechanism and is used to detect the relative position of the product tooling and the positioning mechanism.

[0016] In one embodiment of the present invention, there are a plurality of displacement sensors, each of which is used to detect the relative position of different positions of the product tooling and the positioning mechanism.

[0017] In one embodiment of the present invention, the product tooling includes a traveling vehicle and traveling wheels, and the traveling wheels are rotatably installed on the traveling vehicle to drive the traveling vehicle to move along the feed channel. The side of the traveling vehicle away from the traveling wheels faces the laser welding head and is used to fix the product.

[0018] In one embodiment of the present invention, the laser welding equipment further includes a rangefinder, which is installed on the equipment body and located on one side of the laser welding head, and is used to detect the distance between the laser welding head and the product tooling.

[0019] In one embodiment of the present invention, the laser welding equipment also includes a dust extraction pipe, which is installed on one side of the laser welding head. One end of the dust extraction pipe is connected to an external negative pressure device, and the other end is arranged toward the light emitting surface of the laser welding head.

[0020] The technical solution of the present invention proposes a laser welding device, which includes an equipment body, a laser welding head, a positioning mechanism and a product tooling, wherein the equipment body is provided with a feed channel; the laser welding head is movably installed on the equipment body; the positioning mechanism is installed on the equipment body; the product tooling is movably arranged in the feed channel and is used to fix the product to be assembled, and the product tooling has a processing state and a feeding and discharging state; wherein, in the processing state, the positioning mechanism is connected to the product tooling, and the laser welding head welds the product on the product tooling; in the feeding and discharging state, the positioning mechanism is separated from the product tooling, and the product tooling is driven to move the product tooling and the product out of the feed channel.

[0021] The present application designs the product tooling as a movable structure, and sets the positioning mechanism and the product tooling as a connection and separation mechanism. In the processing state, the positioning mechanism is connected to the product tooling to ensure that the product tooling remains stable during the welding process, thereby avoiding welding quality problems caused by position offset. After welding is completed, the positioning mechanism is separated from the product tooling, and the product tooling can be quickly moved out of the feed channel to make room for the next product to enter, and the product tooling can be moved to the next device for assembly and welding. This mechanism not only improves the accuracy of welding, but also reduces the debugging and maintenance time of the equipment, making the operation of the equipment more efficient and reliable. Secondly, the movable design of the product tooling simplifies the layout and debugging process of the equipment. Traditional fixed tooling needs to be fixedly installed on the production line, the specifications of accessories need to be unified, and debugging and maintenance are more difficult. The movable tooling of the present application can flexibly adjust the position without strict height and specification unification of different equipment, which greatly reduces the customization cost and wiring cycle of the equipment, improves the flexibility and reliability of the equipment, and makes the equipment easier to adapt to the welding needs of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the laser welding equipment provided by the present invention;

[0024] Figure 2 for Figure 1 A left side view of the laser welding apparatus shown;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the product tooling and positioning mechanism in the laser welding equipment;

[0026] Figure 4 for Figure 3 Left view of

[0027] Figure 5 for Figure 3 The structural diagram of the positioning mechanism;

[0028] Figure 6 for Figure 1 Schematic diagram of the structure of the laser welding head in the laser welding equipment.

[0029] Description of Figure Numbers:

[0030] 1. Laser welding equipment; 10. Equipment body; 11. Feed channel; 20. Laser welding head; 30. Positioning mechanism; 31. Positioning block; 32. Limiting groove; 33. Driving part; 40. Product tooling; 41. Positioning column; 42. Traveling vehicle; 43. Traveling wheel; 50. Displacement sensor; 60. Distance meter; 70. Dust extraction pipe.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a laser welding device 1 .

[0036] Combination Figure 1 to Figure 2 In one embodiment of the present invention, the laser welding device 1 includes a device body 10, a laser welding head 20, a positioning mechanism 30 and a product tooling 40. The device body 10 is provided with a feed channel 11; the laser welding head 20 is movably mounted on the device body 10; the positioning mechanism 30 is mounted on the device body 10; the product tooling 40 is movably arranged in the feed channel 11 and is used to fix the product to be assembled. The product tooling 40 has a processing state and a feeding and discharging state;

[0037] Among them, in the processing state, the positioning mechanism 30 is connected to the product tooling 40, and the laser welding head 20 welds the product on the product tooling 40; in the feeding and unloading state, the positioning mechanism 30 is separated from the product tooling 40, and the product tooling 40 is driven to move the product tooling 40 and the product out of the feeding channel 11.

[0038] In this embodiment, the equipment body 10 is the basic structure of the entire laser welding equipment 1, and a feed channel 11 with two ends passing through is provided inside the equipment body 10. The shape and size of the feed channel 11 can be designed according to the size and shape of the product to be processed and the product tooling 40. The feed channel 11 can be designed to be linear to ensure that the product tooling 40 can enter and exit smoothly.

[0039] Furthermore, adjustable support frames are provided on both sides of the equipment body 10. By adjusting the height of the support frames, the height of the feed channel 11 can be changed to adapt to product fixtures 40 of different heights. At the same time, retractable side panels are provided on both sides of the feed channel 11. By adjusting the width of the side panels, the width of the feed channel 11 can be changed to adapt to product fixtures 40 of different widths. This adjustable design allows the equipment to flexibly cope with products of different sizes and shapes, thereby improving the versatility and adaptability of the equipment.

[0040] The laser welding head 20 is movably mounted on the device body 10 through a slide rail, and is driven by a transmission mechanism such as a screw transmission mechanism driven by a servo motor, a linear guide rail driven by a cylinder, or a ball screw driven by a stepper motor to move the laser welding head 20 relative to the device body 10, so that it can move along the X-axis, Y-axis, and Z-axis directions to cover the entire welding area. The main function of the laser welding head 20 is to melt the material to be welded and form a weld through a high-energy-density laser beam, thereby achieving material connection.

[0041] The positioning mechanism 30 is installed on the equipment body 10, and is used to fix the product tooling 40 in the correct position under the processing state. The positioning mechanism 30 can achieve product fixation in a variety of ways. For example, mechanical structures such as limit grooves 32 and positioning columns 41, buckles and slots are respectively set on the positioning mechanism 30 and the product tooling 40. Through the cooperation of these mechanical structures, the product tooling 40 is ensured to remain stable during the welding process; electromagnets can also be set at the corresponding positions of the positioning mechanism 30 and the product tooling 40, and the product tooling 40 is adsorbed and fixed at a predetermined position through the magnetic field generated by the electromagnet; a clamping device driven by a cylinder or a hydraulic cylinder can also be set on the positioning mechanism 30, and the product tooling 40 is fixed at a predetermined position by pneumatic clamping or hydraulic clamping.

[0042] Furthermore, the positioning mechanism 30 can also detect the position of the product tooling 40 by using high-precision sensors, such as photoelectric sensors, proximity sensors, laser ranging sensors, etc., so as to accurately control the position of the product tooling 40 relative to the positioning mechanism 30 and the laser welding head 20, thereby ensuring the processing accuracy of the product.

[0043] The product tooling 40 includes a platform for placing the product and a clamp for fixing the product. The platform provides a support structure for the product to ensure that the product remains level and stable during the welding process; the clamp for fixing the product can be in various forms, such as manual clamping, pneumatic clamping or hydraulic clamping, etc., to accommodate products of different shapes and sizes and ensure that the product remains stable during the welding process.

[0044] The movement of the product jig 40 in the feed channel 11 is one of the key factors to ensure that the battery module is assembled between different welding equipment and the welding process is efficient and stable. By setting a transmission mechanism such as a walking wheel 43, a slider and a slide rail, or a chain and a sprocket at the bottom of the product jig 40, the product jig 40 can be smoothly and accurately moved to the predetermined welding position along the feed channel 11. This movement method not only reduces manual intervention and improves the degree of automation, but also ensures the smoothness of the product jig 40 when entering and exiting the welding area, reducing equipment failures caused by friction or jamming.

[0045] The laser welding device 1 also includes a control system, which is responsible for coordinating and managing the entire welding process, including the adjustment of the feed channel 11, the control of the positioning mechanism 30, the movement of the laser welding head 20, and the movement of the product tooling 40. Through the feedback of high-precision sensors, the control system can adjust the relative positions of the components in real time to ensure the accuracy and stability of the welding process.

[0046] In this embodiment, the product tooling 40 is designed as a movable structure, and the equipment body 10 and the product tooling 40 are set to a separable structure, and the positioning mechanism 30 and the product tooling 40 are set to have a connection and separation mechanism. In the processing state, the positioning mechanism 30 is connected to the product tooling 40 to ensure the stability of the product tooling 40. After the welding is completed, the product tooling 40 is separated from the positioning mechanism 30, and the product tooling 40 is moved out of the feed channel 11 to facilitate the assembly and welding of the next process. This mechanism not only ensures the accuracy of welding, but also reduces the debugging and maintenance time of the equipment, making the equipment operation more efficient and reliable. Secondly, the movable design of the product tooling 40 simplifies the layout and debugging process of the equipment. Compared with traditional fixed tooling, the movable tooling of the present application can flexibly adjust the position, without the need for strict height and specification unification of different equipment, which greatly reduces the customization cost and wiring cycle of the equipment, improves the flexibility and reliability of the equipment, and makes the equipment easier to adapt to the welding requirements of different products. At the same time, the product is fixed on the product tooling 40, and is circulated and processed between different equipment bodies 10 through the product tooling 40, so that when the battery is assembled, there is no need to set up a platform for fixing the product on each assembly equipment. The circulation and processing of multiple processes can be realized through one product tooling 40, thereby reducing equipment costs and product processing costs.

[0047] Combination Figure 1 to Figure 2 In one embodiment of the present invention, the positioning mechanism 30 is provided with a limiting portion, and the product tooling 40 is provided with a matching portion. At least one of the limiting portion and the matching portion is movably arranged relative to the other. In the processing state, the limiting portion and the matching portion are limited and matched, and in the feeding and discharging state, the limiting portion and the matching portion are separated.

[0048] In this embodiment, the limiting part of the positioning mechanism 30 can be a mechanical matching structure such as a limiting groove 32, a limiting pin, a buckle, etc. The matching part of the product tooling 40 is adapted to the limiting part, and the matching part can be a mechanical matching structure such as a positioning column 41, a positioning pin, a slot, etc.

[0049] At least one of the limiting part and the matching part is movable relative to the other, and there can be the following three situations: the limiting part is movable and the matching part is relatively fixed, the matching part is movable and the limiting part is relatively fixed, and both the limiting part and the matching part are movable. These three designs of the limiting part and the matching part can all achieve accurate fixation of the product tooling 40 in the processing state and rapid separation in the feeding and discharging state.

[0050] Taking the example of a movable limiting part and a fixed matching part, in the processing state, the positioning mechanism 30 issues a command through the control system to drive the limiting part to move toward the product tooling 40, so that the limiting part and the matching part are aligned and engaged. At this time, the product tooling 40 is fixed in a predetermined position to ensure the stability and accuracy of the welding process. In the feeding and discharging state, the control system issues a command to drive the limiting part away from the product tooling 40, so that the limiting part and the matching part are separated. At this time, the product tooling 40 can move freely, and the walking wheels 43 of the product tooling 40 are driven by the motor to make it move smoothly along the feeding channel 11 and move out of the welding area.

[0051] Through the above design, there is no need to connect the devices with serial wires, and the flow and processing of each process can be realized through the product tooling 40. Therefore, the laser welding equipment 1 of this embodiment not only improves the accuracy and stability of the welding process, but also simplifies the debugging and maintenance process of the equipment, facilitates the layout of various equipment in the workshop, and effectively solves the problems of high cost, long wiring cycle and inconvenient equipment debugging of the existing battery module assembly production line.

[0052] Combination Figures 3 to 5 In one embodiment of the present invention, the positioning mechanism 30 includes a positioning block 31, the limiting portion is a limiting groove 32, the limiting groove 32 is arranged on the surface of the positioning block 31, and the matching portion is a positioning column 41. In the processing state, the positioning column 41 is embedded in the limiting groove 32.

[0053] In this embodiment, if Figure 5 As shown, the limit groove 32 is opened on the top surface of the positioning block 31, and the positioning column 41 is arranged on the bottom surface of the product tooling 40 facing the positioning block 31. In the processing state, the limit groove 32 and the positioning column 41 are tightly fitted together to ensure the precise fixation of the product tooling 40 during the welding process, prevent it from being displaced during the welding process, and thus ensure the accuracy and quality of the welding.

[0054] The cross section of the positioning column 41 is designed to be conical, truncated cone or trapezoidal, that is, the cross section of the positioning column 41 gradually decreases in the direction toward the limiting groove 32. The cross section of the limiting groove 32 matches the positioning column 41, and is also conical, truncated cone or trapezoidal. When the positioning column 41 is embedded in the limiting groove 32, it can achieve a self-centering effect through the gradually reduced cross section to ensure the precise alignment and stable fixation of the product tooling 40 during the welding process. And when the position of the product tooling 40 has a slight deviation, the inclined surface of the positioning column 41 can guide it to slide smoothly into the limiting groove 32, play a role in correcting the position, thereby further improving the accuracy and reliability of positioning.

[0055] Combination Figure 5 In one embodiment of the present invention, the positioning mechanism 30 also includes a driving member 33, which is drivingly connected to the positioning block 31. The driving member 33 drives the positioning block 31 to drive the limiting groove 32 to move toward or away from the positioning column 41. The positioning column 41 is embedded in the limiting groove 32 or separated from the limiting groove 32 to switch the processing state or the feeding and discharging state.

[0056] In this embodiment, the driving member 33 may be a cylinder, a hydraulic cylinder or a driving motor.

[0057] The driver 33 controls the movement of the positioning block 31 to achieve the engagement or separation of the limit groove 32 and the positioning column 41. Specifically, the driver 33 can accurately control the movement distance and speed of the positioning block 31 to ensure that the engagement and separation process of the limit groove 32 and the positioning column 41 is accurate, which helps to improve the processing accuracy and consistency of the product. At the same time, the driver 33 can quickly drive the positioning block 31 to move, and achieve rapid switching between the processing state and the feeding and unloading state, which helps to improve production efficiency and reduce the idle time of the equipment. In the processing state, the driver 33 can ensure that the positioning block 31 drives the limit groove 32 to firmly fix the positioning column 41, prevent the product tooling 40 from being displaced during the processing process, thereby ensuring the accuracy and quality of welding. In addition, the driver 33 is usually integrated with the control system, and can realize automatic operation through program control, reduce manual intervention, and improve the degree of automation and reliability of production.

[0058] Combination Figures 1 to 4 In one embodiment of the present invention, the positioning mechanism 30 is provided with a plurality of limiting portions, and the product tooling 40 is provided with a plurality of matching portions. In the processing state, each limiting portion is limitedly matched with a matching portion.

[0059] In this embodiment, the provision of multiple limiting parts and matching parts can ensure that the product tooling 40 is accurately fixed at multiple points, reducing the errors that may be caused by single-point positioning. The cooperation of each limiting part and matching part can provide a stable reference point. Under the joint action of multiple reference points, the overall positioning accuracy of the product tooling 40 is significantly improved. In addition, the provision of multiple limiting parts and matching parts can disperse the pressure of the fixed point, avoid deformation or damage caused by excessive force on a single point, make the product tooling 40 more stable during the processing, and reduce displacement caused by vibration or external force. Even if a limiting part or matching part fails or wears out, other limiting parts and matching parts can still continue to play a role to ensure the normal fixation of the product tooling 40, thereby improving the reliability and durability of the system.

[0060] In one embodiment, the cross section of the product tooling 40 is a rectangular structure, each of its four corners is provided with a matching portion, and four corresponding positions of the positioning mechanism 30 are provided with limiting portions. This arrangement ensures that the product tooling 40 can be accurately fixed at the four corners, thereby improving the overall positioning accuracy.

[0061] Combination Figures 3 to 5 In one embodiment of the present invention, the laser welding equipment 1 further includes a displacement sensor 50 , which is disposed on the positioning mechanism 30 and is used to detect the relative position of the product tooling 40 and the positioning mechanism 30 .

[0062] In this embodiment, the displacement sensor 50 can be arranged beside each limit portion, or can be installed on the positioning block 31, or can be arranged at the entrance of the feeding channel 11. The displacement sensor 50 can be of various types, such as a photoelectric displacement sensor, a magnetostrictive displacement sensor, a capacitive displacement sensor, or a laser displacement sensor.

[0063] The displacement sensor 50 is connected to the control system in communication. The displacement sensor 50 monitors the relative distance between the product tooling 40 and the positioning mechanism 30 in real time, and feeds back this information to the control system, so that each limit part can accurately match with the corresponding matching part, thereby reducing the position deviation of the product tooling 40 during the placement and fixing process, and improving the accuracy and stability of welding. Specifically, when the product tooling 40 is placed on the positioning mechanism 30, the displacement sensor 50 starts to work and detects the initial position of the product tooling 40. If there is a deviation in the position of the product tooling 40, the displacement sensor 50 will transmit this information to the control system, and the control system will adjust the action of the driving member 33 according to the feedback information, so that the positioning block 31 drives the limit part to move toward the product tooling 40 until each limit part is completely aligned and engaged with the corresponding matching part. In the processing state, the displacement sensor 50 continuously monitors the relative position of the product tooling 40 and the positioning mechanism 30 to ensure that the product tooling 40 always remains in the correct position during the entire welding process. If displacement occurs during the welding process, the displacement sensor 50 will immediately detect it and feed it back to the control system, and the control system can take corresponding measures to correct it to ensure the accuracy and quality of welding.

[0064] Combination Figures 1 to 4 In one embodiment of the present invention, there are multiple displacement sensors 50, and each displacement sensor 50 is used to detect the relative position of different positions of the product tooling 40 and the positioning mechanism 30.

[0065] In this embodiment, by setting a plurality of displacement sensors 50, the relative position of the product tooling 40 at different positions can be monitored in real time to ensure that each limit part can accurately match the corresponding matching part. This multi-point monitoring and feedback mechanism significantly improves the accuracy of positioning and reduces welding quality problems caused by position deviation. The real-time monitoring function of multiple displacement sensors 50 can timely detect and correct position deviations to ensure that the product tooling 40 is always in the correct position during the welding process. This adaptive correction function improves the reliability and stability of the system and reduces the welding failure rate caused by position deviation. Multiple displacement sensors 50 are integrated with the control system to achieve automated operation. The control system can automatically adjust the action of the drive member 33 according to the feedback information of multiple displacement sensors 50, making the positioning process more intelligent and efficient. This intelligent design not only improves production efficiency, but also reduces manual intervention and reduces the difficulty of operation. The real-time monitoring function of multiple displacement sensors 50 enables the equipment to adapt to product tooling 40 of various shapes and sizes.

[0066] In one embodiment, the product fixture 40 is a rectangular structure, each of which has a matching portion at its four corners, and the four positions of the positioning mechanism 30 are correspondingly provided with a limiting portion, and each limiting portion is provided next to a displacement sensor 50. This arrangement ensures that the product fixture 40 can be accurately fixed at the four corners, thereby improving the overall positioning accuracy.

[0067] Combination Figures 1 to 4 In one embodiment of the present invention, the product tooling 40 includes a traveling vehicle 42 and a traveling wheel 43. The traveling wheel 43 is rotatably installed on the traveling vehicle 42 to drive the traveling vehicle 42 to move along the feed channel 11. The side of the traveling vehicle 42 away from the traveling wheel 43 faces the laser welding head 20 and is used to fix the product.

[0068] In this embodiment, the travel vehicle 42 is the main bearing part of the product fixture 40, and its upper surface is flat and is provided with a fixing fixture to place and fix the product. The travel wheel 43 is installed at the bottom of the travel vehicle 42, and the travel wheel 43 can use a ball bearing or a precision bearing to reduce friction and increase service life.

[0069] In order to automatically control the moving speed and direction of the traveling vehicle 42 and ensure that the product fixture 40 can move quickly and smoothly along the feeding channel 11, the product fixture 40 is also equipped with a traveling drive. The traveling drive 33 can be a motor, a cylinder or a hydraulic cylinder, etc. The traveling drive is connected to the control system to ensure that the movement of the traveling vehicle 42 is precisely controllable.

[0070] In the feeding state, the control system issues a command, the travel drive component starts, drives the travel wheel 43 to rotate, and moves the travel vehicle 42 along the feeding channel 11. When the product tooling 40 enters the feeding channel 11, the displacement sensor 50 detects its initial position and feeds back the information to the control system. If there is a deviation in the position of the product tooling 40, the control system will adjust the action of the travel drive component according to the feedback information so that the product tooling 40 accurately reaches the specified position. After the welding is completed, the control system issues a command again, and the drive component 33 drives the positioning block 31 away from the product tooling 40, so that the limit part is separated from the mating part. At this time, the travel drive component restarts, drives the travel wheel 43 to rotate, and the travel vehicle 42 moves smoothly along the feeding channel 11 until it moves out of the welding area.

[0071] Combination Figure 6 In one embodiment of the present invention, the laser welding equipment 1 further includes a rangefinder 60, which is installed on the equipment body 10 and located on one side of the laser welding head 20. The rangefinder 60 is used to detect the distance between the laser welding head 20 and the product tooling 40.

[0072] In this embodiment, the distance meter 60 is installed on the right side (or left side) of the laser welding head 20 and maintains a certain horizontal distance from the laser welding head 20 to ensure that the distance meter 60 can accurately detect the distance between the laser welding head 20 and the product tooling 40 without being interfered by other components. The distance meter 60 can be a laser distance meter, an ultrasonic distance meter or an infrared distance meter.

[0073] The rangefinder 60 is connected to the control system for communication. The rangefinder 60 measures the distance between the laser welding head 20 and the product tooling 40, and feeds this data back to the control system in real time to ensure that the laser welding head 20 is accurately focused on the welding position during the welding process. Specifically, when the product tooling 40 is placed on the positioning mechanism 30 and fixed, the rangefinder 60 starts to work and detects the initial distance between the laser welding head 20 and the product tooling 40. If there is a deviation in the detected distance, the rangefinder 60 will transmit this information to the control system, and the control system will adjust the position of the laser welding head 20 according to the feedback information, or control the drive member 33 to drive the positioning block 31 to move toward or away from the laser welding head 20, so as to drive the product tooling 40 to move toward or away from the laser welding head 20, ensuring that the distance between it and the product tooling 40 is within the set range.

[0074] During the welding process, the distance meter 60 continuously monitors the distance between the laser welding head 20 and the product fixture 40 to ensure that the welding head always maintains the correct distance from the product fixture 40. If any displacement or distance change occurs during the welding process, the distance meter 60 will immediately detect it and feed it back to the control system, and the control system can take appropriate measures to correct it to ensure the accuracy and quality of the welding.

[0075] Combination Figure 6 In one embodiment of the present invention, the laser welding equipment 1 also includes a dust extraction pipe 70, which is installed on one side of the laser welding head 20, one end of the dust extraction pipe 70 is connected to the external negative pressure device, and the other end is arranged toward the light emitting surface of the laser welding head 20.

[0076] In this embodiment, the dust extraction pipe 70 is installed on the right side (or left side) of the laser welding head 20 and maintains a certain horizontal distance from the laser welding head 20 to ensure that the dust extraction pipe 70 can effectively collect the smoke and harmful gases generated during the welding process without interfering with the normal operation of the laser welding head 20. One end of the dust extraction pipe 70 is connected to an external negative pressure device (such as an exhaust fan or a vacuum pump), and the other end is arranged toward the light-emitting surface of the laser welding head 20. The shape of the dust extraction pipe 70 can be designed to be a bell-shaped or dust hood to more effectively capture smoke and harmful gases.

[0077] When the laser welding head 20 starts working, the high energy density laser beam will melt the material to be welded and form a weld, and a large amount of smoke and harmful gases will be generated in the process. At this time, the external negative pressure device is activated and generates negative pressure, and the smoke and harmful gases generated in the welding process are extracted from the vicinity of the light-emitting surface of the laser welding head 20 through the dust extraction pipe 70, and transported to the external processing system for filtering and purification, and finally discharged into the environment, thereby reducing the impact of the smoke and harmful gases generated in the welding process on the operator, improving the cleanliness of the welding environment, and also improving the environmental protection performance and safety of the equipment.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser welding device, characterized in that: The laser welding equipment comprises: An equipment body, wherein the equipment body is provided with a feed channel; A laser welding head, the laser welding head is movably mounted on the device body; A positioning mechanism, the positioning mechanism being mounted on the device body; and A product tooling, which is movably disposed in the feed channel and is used to fix the product to be assembled, and has a processing state and a feeding and discharging state; Among them, in the processing state, the positioning mechanism is connected to the product tooling, and the laser welding head welds the product on the product tooling; in the feeding and discharging state, the positioning mechanism is separated from the product tooling, and drives the product tooling to move the product tooling and the product out of the feeding channel.

2. The laser welding equipment according to claim 1, characterized in that: The positioning mechanism is provided with a limiting portion, and the product tooling is provided with a matching portion. At least one of the limiting portion and the matching portion is movably arranged relative to the other. In the processing state, the limiting portion and the matching portion are limitedly matched, and in the feeding and discharging state, the limiting portion and the matching portion are separated.

3. The laser welding equipment according to claim 2, characterized in that: The positioning mechanism comprises a positioning block, the limiting portion is a limiting groove, the limiting groove is arranged on the surface of the positioning block, the matching portion is a positioning column, and in the processing state, the positioning column is embedded in the limiting groove.

4. The laser welding equipment according to claim 3, characterized in that: The positioning mechanism also includes a driving member, which is drivably connected to the positioning block. The driving member drives the positioning block to drive the limiting groove to move toward or away from the positioning column. The positioning column is embedded in the limiting groove or separated from the limiting groove to switch the processing state or the feeding and discharging state.

5. The laser welding equipment according to any one of claims 2 to 4, characterized in that: The positioning mechanism is provided with a plurality of limiting parts, and the product tooling is provided with a plurality of matching parts. In the processing state, each of the limiting parts is limitedly matched with a matching part.

6. The laser welding device according to any one of claims 1 to 4, characterized in that: The laser welding equipment further comprises a displacement sensor, which is arranged on the positioning mechanism and is used to detect the relative position of the product tooling and the positioning mechanism.

7. The laser welding equipment according to claim 6, characterized in that: There are multiple displacement sensors, and each displacement sensor is used to detect the relative position of different positions of the product tooling and the positioning mechanism.

8. The laser welding equipment according to any one of claims 1 to 4, characterized in that: The product tooling includes a traveling vehicle and traveling wheels. The traveling wheels are rotatably mounted on the traveling vehicle to drive the traveling vehicle to move along the feed channel. The side of the traveling vehicle away from the traveling wheels faces the laser welding head and is used to fix the product.

9. The laser welding device according to any one of claims 1 to 4, characterized in that: The laser welding equipment also includes a distance meter, which is installed on the equipment body and located on one side of the laser welding head. The distance meter is used to detect the distance between the laser welding head and the product tooling.

10. The laser welding equipment according to any one of claims 1 to 4, characterized in that: The laser welding equipment also includes a dust extraction pipe, which is installed on one side of the laser welding head. One end of the dust extraction pipe is connected to an external negative pressure device, and the other end is arranged toward the light emitting surface of the laser welding head.

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