Battery tray processing equipment based on multi-station parallel laser welding

Abstract

The application discloses battery tray processing equipment based on multi-station parallel laser welding and relates to the field of battery tray welding processing, and specifically comprises a welding table and a peripheral frame installed on the outer side of the welding table, laser welding parts for welding the battery tray are arranged on the four sides of the peripheral frame, and a limiting assembly for limiting the welding of the battery tray is arranged on the outer side of the welding table; the application realizes efficient and high-quality manufacturing of the battery tray by combining mechanical limiting, synchronous shaping and airflow slag blowing technology; that is, a cylinder one constructs a rectangular limiting area to guarantee the accurate alignment of a tray side plate frame and a tray bottom plate, to provide a stable reference for laser welding; in addition, a cylinder two is linked with the cylinder one to press down, to offset residual welding stress and avoid tray deformation; meanwhile, the cylinder one is linked with a pressing column to extrude an air bag to generate airflow, to automatically blow off welding slag to a collecting groove, to maintain the cleanliness of welding.

Description

Technical Field

[0001] This invention relates to the field of battery tray welding technology, and more specifically, to battery tray processing equipment based on multi-station parallel laser welding. Background Technology

[0002] With the booming development of industries such as new energy vehicles, the manufacturing quality and efficiency of battery trays, as key components, are of paramount importance.

[0003] Traditional battery tray processing technology has obvious limitations. It lacks a precise and effective mechanical limiting mechanism for positioning the tray side panel frame and the bottom plate, making it difficult to ensure that the two are accurately aligned. This makes the reference unstable during laser welding, and the uniformity of the weld seam is difficult to guarantee, which in turn affects the tray's sealing and structural strength.

[0004] After welding, the elastic deformation caused by residual welding stress can easily lead to problems such as sealing failure or structural loosening during subsequent use of the pallet. Moreover, existing shaping methods are mostly independent operations, which cannot effectively and promptly offset the deformation. Furthermore, if the residue generated during the welding process is not cleaned up in time, it will contaminate the welding area, cause weld defects, and reduce the quality of the pallet.

[0005] Therefore, developing a battery tray processing equipment based on multi-station parallel laser welding, integrating mechanical limiting, synchronous shaping and automatic slag blowing functions, is of great practical significance. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a battery tray processing equipment based on multi-station parallel laser welding.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a battery tray processing equipment based on multi-station parallel laser welding, including a welding table and an outer frame installed on its outer side, wherein laser welding parts for welding the battery tray are provided on the four sides of the outer frame, and a limiting component for limiting the welding of the battery tray is provided on the outer side of the welding table.

[0008] The limiting component includes a rectangular frame that is slidably disposed on the outer side of the top wall of the welding station. The rectangular frame is connected to the bottom wall of the welding station by four sets of cylinders. Two side limiting strips are fixedly installed on the top walls of the four sides of the rectangular frame. A shaping roller is rotatably disposed on the top of the two side limiting strips. An inner shaping rectangular plate is disposed directly above the welding station for shaping the battery tray after welding. A cylinder is disposed above the inner shaping rectangular plate to control its lifting and lowering.

[0009] The outer side of the rectangular frame is provided with a slag removal component for removing and recycling welding slag.

[0010] Furthermore, the slag removal component includes a side-blowing tube fixedly installed on the top wall of the four sides of the rectangular frame, a pressing column fixedly connected to the side wall of one protruding end of the cylinder, a pressing circular plate fixedly connected to the bottom of the pressing column, and a cylindrical airbag provided on the top wall of the welding table located directly below the pressing circular plate.

[0011] Furthermore, an air inlet pipe and an air outlet pipe are vertically inserted into the bottom of the cylindrical airbag. One-way valves are provided on the outer walls of both the air inlet pipe and the air outlet pipe. The output end of the air outlet pipe is connected to the side-blowing tube via a flexible hose.

[0012] Furthermore, the outer side of the cylindrical airbag is provided with a limiting sleeve to limit its movement, and the limiting sleeve is fixedly connected to the bottom of the welding table.

[0013] Furthermore, the output end of the side-blowing tube is positioned towards the welding table.

[0014] Furthermore, a slag collection trough is fixedly connected to the outer wall below the welding station.

[0015] Furthermore, the back of the outer frame is provided with a side frame for fixing the second cylinder.

[0016] Furthermore, the laser-welded component includes a welding rod fixedly connected to the side wall of the outer frame, a movable fixture fixedly provided on the top of the welding rod, a cylinder three connected inside the movable fixture, and a laser welding head provided at the output end of the cylinder three.

[0017] The processing method for the battery tray includes the following steps:

[0018] Pallet bottom plate positioning and limiting preparation: Place the pallet bottom plate horizontally on the laser welding table surface, and use four shaping long rollers to form a pre-support structure to complete the initial limiting;

[0019] Rectangular limiting area construction: The extension end of the control cylinder extends, driving the side limiting strip and the shaping roller above the rectangular frame to move upward synchronously, forming a "rectangular limiting area" that matches the shape of the pallet side panel frame;

[0020] Pallet side panel frame assembly and laser welding: Place the pallet side panel frame vertically along the rectangular limiting area, ensuring that its bottom is completely aligned with the pallet bottom plate; start multiple sets of parallel laser welding heads to continuously weld the gap between the two, completing the processing of the main structure of the battery pallet;

[0021] Synchronous shaping and residual stress elimination: The extension end of the second control cylinder extends, pushing the inner shaping rectangular plate to the inside of the tray and aligning it with the axial direction of the shaping long roller; Simultaneously, the second control cylinder continues to extend while the first cylinder retracts, with the speed and displacement being consistent, so that the inner shaping rectangular plate and the shaping long roller synchronously adhere to the inner and outer walls of the tray side panel frame and are pressed vertically downward.

[0022] Slag removal and unloading: The cylinder retracts and resets, and the inner shaped rectangular plate exits the tray; during the downward resetting process of the rectangular frame, the gas in the cylindrical airbag is introduced through the hose into the side blowing pipe and sprayed out at high speed, blowing off the welding slag remaining on the rectangular frame into the welding slag collection tank; finally, the tray is unloaded and enters the subsequent inspection or assembly process.

[0023] The technical effects and advantages of this invention are as follows:

[0024] 1. This invention achieves high-precision, low-deformation manufacturing of battery trays through mechanical limiting and synchronous shaping technology: Cylinder 1 drives the shaping roller and side limiting strip to construct a "rectangular limiting area" to ensure precise alignment between the tray side plate frame and the tray bottom plate, providing a stable benchmark for laser welding and ensuring weld uniformity; after welding, Cylinder 2 works in conjunction with Cylinder 1 to synchronously press down the inner shaping rectangular plate and the shaping roller, inducing plastic flow of the material through vertical force, actively offsetting the elastic deformation caused by residual welding stress, and preventing sealing failure or structural loosening due to stress release during subsequent use of the tray; the entire process integrates limiting, welding, and shaping, improving production efficiency and product consistency.

[0025] 2. This invention uses a cylinder to press the column and the cylindrical airbag in a coordinated manner, and uses mechanical extrusion to blow away the slag with airflow. It can automatically clean the welding residue on the rectangular frame without the need for an additional power source. This not only ensures the cleanliness of the welding area and avoids the welding quality of the battery tray from being affected by the welding slag, but also collects the waste material in the welding slag collection tank for easy subsequent processing. The overall structure is compact, efficient and environmentally friendly. Attached Figure Description

[0026] Figure 1 This is a perspective view of the overall structure of the present invention.

[0027] Figure 2 This is a three-dimensional view of the outer side of the welding station in this invention.

[0028] Figure 3 This is a three-dimensional view of the limiting component in this invention.

[0029] Figure 4 A 3D view showing the positional relationship between the slag removal component and the rectangular frame.

[0030] Figure 5 This is an enlarged perspective view of the slag removal component in this invention.

[0031] Figure 6 This is a three-dimensional view of the structure of the laser-welded component in this invention.

[0032] The attached diagram is labeled as follows: 1. Side frame; 2. Outer frame; 3. Laser welding component; 31. Moving fixture; 32. Cylinder three; 33. Laser welding head; 41. Cylinder one; 42. Rectangular frame; 43. Side limiting strip; 44. Shaping long roller; 45. Inner shaping rectangular plate; 46. Cylinder two; 5. Welding table; 6. Weld slag collection tank; 71. Side blowing long pipe; 72. Flexible hose; 73. Limiting sleeve; 74. Columnar airbag; 75. Pressing column; 76. Pressing round plate; 01. Pallet bottom plate; 02. Pallet side plate frame. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-6 As shown, the lack of a precise and effective mechanical limiting mechanism makes it difficult to ensure accurate alignment between the two and the elastic deformation caused by welding residual stress, which can easily lead to sealing failure or structural loosening of the pallet during subsequent use. The following solutions can be used to address these issues.

[0035] The battery tray processing equipment based on multi-station parallel laser welding in this embodiment includes a welding table 5 and an outer frame 2 installed on its outer side. The outer frame 2 is provided with laser welding parts 3 for welding the battery tray on its four sides. The outer side of the welding table 5 is provided with a limiting component for limiting the welding of the battery tray.

[0036] The laser-welded component 3 includes a welding rod that is fixedly connected to the side wall of the outer frame 2. A movable fixture 31 is fixedly provided on the top of the welding rod. A cylinder 32 is connected inside the movable fixture 31. A laser welding head 33 is provided at the output end of the cylinder 32.

[0037] It should be noted that the movable tooling 31 is a movable functional device used to drive the cylinder 32 in the prior art, and it belongs to the prior art, so it will not be described in detail here.

[0038] The limiting assembly includes a rectangular frame 42 that is slidably disposed on the outer side of the top wall of the welding table 5. The rectangular frame 42 is connected to the bottom wall of the welding table 5 by four sets of cylinders 41. Two side limiting strips 43 are fixedly installed on the top walls of the four sides of the rectangular frame 42. A shaping long roller 44 is rotatably disposed on the top of the two side limiting strips 43. An inner shaping rectangular plate 45 is disposed directly above the welding table 5 for shaping the battery tray after welding. A cylinder 46 is disposed above the inner shaping rectangular plate 45 to control its lifting and lowering.

[0039] The outer side of the rectangular frame 42 is provided with a slag removal component for removing and recycling welding slag;

[0040] The back of the outer frame 2 is provided with a side frame 1 for fixing the cylinder 46;

[0041] In this embodiment, the laser welding and shaping process for the battery tray includes the following steps:

[0042] Step 1: Positioning and Limiting Preparation of Pallet Base Plate 01: Place the pallet base plate 01 horizontally on the surface of the laser welding table 5, and initially limit it through the top of the four shaping rollers 44 (when the cylinder 41 is in the initial retracted state, the top of the shaping rollers 44 is higher than the top wall of the welding table 5, forming a pre-support structure).

[0043] Step 2: Construction of rectangular limiting area: The extension end of the control cylinder 41 extends, driving the side limiting strip 43 and the shaping long roller 44 above the rectangular frame 42 to move upward synchronously, forming a "rectangular limiting area" that matches the shape of the pallet side panel frame 02. The mechanical limiting ensures the assembly accuracy of the pallet side panel frame 02 and the pallet bottom plate 01, providing a stable benchmark for subsequent welding.

[0044] Step 3: Assembly and laser welding of pallet side panel frame 02: Place the pallet side panel frame 02 vertically along the rectangular limiting area, ensuring that the bottom of the pallet side panel frame 02 is completely aligned with the pallet bottom plate 01; start multiple sets of parallel laser welding heads 33 to continuously weld the gap between the pallet side panel frame 02 and the pallet bottom plate 01, completing the processing of the main structure of the battery pallet; laser welding is fast and has a small heat-affected zone, and combined with mechanical limiting, it can achieve high-precision, low-deformation welding;

[0045] Step 4: Synchronous Shaping and Residual Stress Relief: Control the extension end of cylinder 2 46 to push the inner shaping rectangular plate 45 into the tray until it is axially aligned with the shaping long roller 44; simultaneously control cylinder 2 46 to continue extending and cylinder 1 41 to retract, with both moving at the same speed and displacement, so that the inner shaping rectangular plate 45 and the shaping long roller 44 synchronously adhere to the inner and outer walls of the tray side panel frame 02, and apply vertical downward pressure; the pressure causes the side panel frame material to undergo controllable plastic flow, correcting welding deformation, and the vertical pressure counteracts the elastic rebound caused by welding residual stress, improving structural stability; and the linkage of cylinder 1 41 and cylinder 2 46 ensures balanced inner and outer shaping forces, avoiding local overpressure or underpressure;

[0046] Step 5: Reset and unloading of the shaping mechanism: Cylinder 2 46 retracts and resets, the inner shaping rectangular plate 45 exits the tray, and the welded tray is fully exposed above the welding table 5; the tray is unloaded by a robotic arm or conveyor device and enters the subsequent inspection or assembly process. Automated unloading improves the production cycle and reduces the risk of manual intervention.

[0047] In summary:

[0048] Active stress control: Residual stress is released in advance through plastic shaping to prevent the pallet from failing to seal or loosening due to stress relaxation during service;

[0049] Full-process automation: The integration of cylinder linkage control and laser welding enables one-stop production of "assembly-welding-shaping-material cutting", improving efficiency and reliability;

[0050] In this embodiment, high-precision, low-deformation manufacturing of the battery tray is achieved through mechanical limiting and synchronous shaping technology: Cylinder 41 drives the shaping roller 44 and the side limiting plate 43 to construct a "rectangular limiting area" to ensure precise alignment between the tray side plate frame 02 and the tray bottom plate 01, providing a stable benchmark for laser welding and ensuring weld uniformity; after welding, cylinder 46 works in conjunction with cylinder 41 to synchronously press down the inner shaping rectangular plate 45 and the shaping roller 44, inducing plastic flow of the material through vertical force, actively offsetting the elastic deformation caused by welding residual stress, and avoiding sealing failure or structural loosening due to stress release during subsequent use of the tray; the entire process integrates limiting, welding, and shaping, improving production efficiency and product consistency;

[0051] Example 2: Please refer to Figures 1-2 , Figures 4-6 As shown, if the residue generated during the welding process is not cleaned in time, it will contaminate the welding area, cause weld defects, and reduce the quality of the pallet. The following solutions can be used to address this issue.

[0052] The slag removal component includes a side-blowing pipe 71 fixedly installed on the top wall of the four sides of the rectangular frame 42. A pressing column 75 is fixedly connected to the side wall of the extended end of the cylinder 41. A pressing circular plate 76 is fixedly connected to the bottom of the pressing column 75. A cylindrical airbag 74 is provided on the top wall of the welding table 5 located directly below the pressing circular plate 76. A limiting sleeve 73 is provided on the outside of the cylindrical airbag 74 to limit its movement. The limiting sleeve 73 is fixedly connected to the bottom of the welding table 5.

[0053] The bottom of the cylindrical airbag 74 is vertically inserted with an air inlet pipe and an air outlet pipe. Both the air inlet pipe and the air outlet pipe are equipped with one-way valves on their outer walls. The output end of the air outlet pipe is connected to the side blowing pipe 71 through a hose 72. The output end of the side blowing pipe 71 is set towards the welding table 5.

[0054] It should be added that when constructing the rectangular limiting area, gas enters the interior of the cylindrical airbag 74 through the air inlet pipe and inflates the cylindrical airbag 74.

[0055] A slag collection tank 6 is fixedly connected to the outer wall below the welding table 5 to facilitate the recycling and cleaning of welding slag.

[0056] In this embodiment: during the downward resetting of the rectangular frame 42 (in step five), cylinder 41 synchronously drives the pressing column 75 to move downward. As cylinder 41 is fully reset, the pressing round plate 76 at the bottom of the pressing column 75 presses down on the cylindrical airbag 74. After the gas inside the airbag is compressed, it is introduced into the side blowing tube 71 through the hose 72. The side blowing tube 71 then sprays out a high-speed airflow to blow off the welding slag remaining on the rectangular frame 42. Under the action of the airflow, the welding slag falls downward into the pre-set welding slag collection groove 6, thereby avoiding the accumulation of welding slag above the rectangular frame 42 and preventing it from interfering with the welding quality of the subsequent battery tray.

[0057] In summary: In this embodiment, the cylinder 41 links the pressing column 75 and the cylindrical airbag 74 to achieve airflow slag removal by mechanical extrusion. The welding residue on the rectangular frame 42 can be automatically cleaned without an additional power source. This not only ensures the cleanliness of the welding area and avoids welding residue contamination affecting the welding quality of the battery tray, but also collects waste materials in the welding residue collection tank 6 for easy subsequent processing. The overall structure is compact, efficient and environmentally friendly.

[0058] As can be seen from Embodiments 1 and 2 of this invention:

[0059] Through multi-stage collaborative innovation, the battery tray achieves efficient and high-quality manufacturing: On the one hand, mechanical limiting and synchronous shaping technology is adopted. Cylinder 1 41 drives the shaping long roller 44 and the side limiting strip 43 to form a "rectangular limiting area" to ensure that the tray side plate frame 02 and the tray bottom plate 01 are precisely aligned, providing a stable benchmark for laser welding and ensuring the uniformity of the weld. After welding, cylinder 2 46 is linked with cylinder 1 41 to make the inner shaping rectangular plate 45 and the shaping long roller 44 press down synchronously, inducing the plastic flow of the material to offset the residual welding stress and avoid the tray from sealing failure or structural loosening due to stress release.

[0060] On the other hand, the cylinder 41 is used to press the column 75 to squeeze the cylindrical air bag 74. The mechanical energy is converted to generate airflow, which automatically blows the welding residue on the rectangular frame 42 to the collection tank. This keeps the welding area clean and prevents welding slag contamination. It also realizes the centralized recycling of waste materials and facilitates subsequent processing. The whole process integrates the functions of limiting, welding, shaping and slag blowing. No additional power source is required. The structure is compact and the production efficiency is significantly improved.

[0061] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery tray processing equipment based on multi-station parallel laser welding, comprising a welding table (5) and a peripheral frame (2) installed on the outer side of the welding table (5), characterized in that, The four sides of the peripheral frame (2) are provided with laser welding pieces (3) for welding the battery tray, and the outer side of the welding table (5) is provided with a limiting assembly for limiting the welding of the battery tray; The limiting assembly comprises a rectangular frame (42) slidably arranged on the outer side of the top wall of the welding table (5), the rectangular frame (42) is connected between the bottom wall of the welding table (5) and the rectangular frame (42) through four groups of air cylinders (41), two side limiting strip plates (43) are fixedly installed on the top wall of the four sides of the rectangular frame (42), and a shaping long roller (44) is rotatably arranged on the top of the two side limiting strip plates (43); the welding table (5) is provided with an inner shaping rectangular plate (45) above for shaping the battery tray after welding; and the upper side of the inner shaping rectangular plate (45) is provided with an air cylinder (46) for controlling the lifting thereof; The outer side of the rectangular frame (42) is provided with a welding slag removing component for removing and recycling the welding slag; the welding slag removing component comprises a side-blowing long pipe (71) fixedly installed on the top wall of the four sides of the rectangular frame (42), a pressing column (75) is fixedly connected to the side wall of the extending end of the air cylinder (41), a pressing circular plate (76) is fixedly connected to the bottom of the pressing column (75), and a cylindrical air bag (74) is arranged on the top wall of the welding table (5) directly below the pressing circular plate (76); The processing method of the battery tray comprises the following steps: Positioning and limiting preparation of the tray bottom plate (01): the tray bottom plate (01) is horizontally placed on the table surface of the welding table (5), and the four shaping long rollers (44) are used to form a pre-supporting structure to complete the initial limiting; Rectangular limiting area construction: the extending end of the air cylinder (41) is controlled to extend, the side limiting strip plates (43) and the shaping long rollers (44) above the rectangular frame (42) are driven to move upward synchronously, and a rectangular limiting area matched with the outer shape of the tray side plate frame (02) is formed; Tray side plate frame (02) assembly and laser welding: the tray side plate frame (02) is vertically placed along the rectangular limiting area, and the bottom thereof is ensured to be completely aligned with the tray bottom plate (01); a plurality of parallel arranged laser welding heads (33) are started to continuously weld the gap between the two, and the main structure processing of the battery tray is completed; Synchronous shaping and residual stress elimination: the extending end of the air cylinder (46) is controlled to extend, and the inner shaping rectangular plate (45) is pushed to the position axially aligned with the shaping long roller (44) in the tray; the air cylinder (46) is continuously controlled to extend, and the air cylinder (41) is controlled to shrink at the same speed and displacement, so that the inner shaping rectangular plate (45) and the shaping long roller (44) synchronously fit the inner and outer walls of the tray side plate frame (02) and vertically press downward; Slag blowing and discharging: the air cylinder (46) is retracted, and the inner shaping rectangular plate (45) exits the tray; during the downward movement and resetting of the rectangular frame (42), the gas in the cylindrical air bag (74) is introduced into the side-blowing long pipe (71) through the hose (72) to blow out high-speed airflow, and the residual welding slag on the rectangular frame (42) is blown into the welding slag collecting groove (6); finally, the tray is discharged, and enters the subsequent detection or assembly process.

2. The multi-station parallel laser welding based battery tray processing apparatus according to claim 1, characterized in that: The bottom of the cylindrical air bag (74) is vertically provided with an air inlet pipe and an air outlet pipe, the outer wall of the air inlet pipe and the air outlet pipe is respectively provided with a one-way valve, and the output end of the air outlet pipe is connected with the side blowing long pipe (71) through a hose (72).

3. The multi-station parallel laser welding based battery tray processing apparatus according to claim 1, characterized in that: The outer side of the cylindrical air bag (74) is provided with a limiting sleeve (73) limiting the cylindrical air bag (74), and the limiting sleeve (73) is fixedly connected with the bottom of the welding table (5).

4. The multi-station parallel laser welding based battery tray processing apparatus of claim 1, wherein: The output end of the side blowing long pipe (71) is arranged towards the welding table (5).

5. The multi-station parallel laser welding based battery tray processing apparatus of claim 1, wherein: The outer side wall below the welding table (5) is fixedly connected with a welding slag collecting groove (6).

6. The multi-station parallel laser welding based battery tray processing apparatus of claim 1, wherein: The back of the peripheral frame (2) is provided with a side frame (1) fixing the air cylinder two (46).

7. The multi-station parallel laser welding based battery tray processing apparatus of claim 1, wherein: The laser welding part (3) comprises a welding rod fixedly connected with the side wall of the peripheral frame (2), the top of the welding rod is fixedly provided with a moving tool (31), the inside of the moving tool (31) is connected with an air cylinder three (32), and the output end of the air cylinder three (32) is provided with a laser welding head (33).

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