Pressing structure for assisting laser spot welding
Patent Information
- Application Number
- CN202522457598.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-20
AI Technical Summary
但是，为防止变形而设置在加强筋中部的限位件会直接遮挡下方待焊接区域，导致被遮挡部位无法完成激光点焊，形成焊接缺失区域，这种结构性遮挡问题不仅影响加强筋与钣金的连接强度均匀性，更可能因局部连接不足导致应力集中，最终削弱整体结构强化效果
将钣金件固定于工作台装夹机构；定位机构驱动衔接板下移，使平行组件靠近钣金，随后把加强筋置于钣金上，由平行组件将其校正至与工作台行进路径平行；
Smart Images
Figure CN224855199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser spot welding, and in particular to a pressing structure for assisting laser spot welding. Background Technology
[0002] In sheet metal structure reinforcement processes, due to the material properties and thickness limitations of sheet metal parts, they are prone to elastic deformation when subjected to external forces. It is usually necessary to weld reinforcing ribs to improve their structural rigidity. Existing processes use automated equipment equipped with an X-axis linear module. A worktable slides on the base of the equipment, and a clamping mechanism for clamping sheet metal is provided on the worktable. The worktable moves back and forth precisely along the X-axis under the drive of a ball screw device. The specific processing flow is as follows: First, the sheet metal parts are fixed on the clamping mechanism of the workbench. After the reinforcing ribs are placed, the limiting parts are used in conjunction with the pins for multi-point fixing. The limiting parts set in the middle of the reinforcing ribs are used to suppress the bulging deformation of the sheet metal under pressure. During the process of the workbench moving the sheet metal and the reinforcing ribs along the X-axis, the laser spot welding device performs spot welding on the welding area of the reinforcing ribs according to the preset path. However, the limiting component placed in the middle of the reinforcing rib to prevent deformation will directly block the area to be welded below, causing the blocked part to be unable to complete laser spot welding, forming a weld gap area. This structural blocking problem not only affects the uniformity of the connection strength between the reinforcing rib and the sheet metal, but may also lead to stress concentration due to insufficient local connection, ultimately weakening the overall structural reinforcement effect. Utility Model Content
[0003] The purpose of this utility model is to provide a pressing structure to assist laser spot welding. By pressing the reinforcing rib with a limiting mechanism that can move on the reinforcing rib, the problem of traditional sheet metal fixing methods blocking laser spot welding is avoided.
[0004] By using a movable limiting mechanism to press the reinforcing rib, the traditional limiting component can constrain the reinforcing rib to the sheet metal, thus avoiding obstructing the spot welding work of the laser spot welding device.
[0005] The technical solution adopted by the pressing structure for assisting laser spot welding disclosed in this utility model is as follows: The device includes a base, a laser spot welding device, and a limiting mechanism. The base is equipped with a traveling mechanism, a positioning mechanism, and a pressing component. The laser spot welding device is slidably connected to the traveling mechanism, which drives the laser spot welding device to move up and down. The positioning mechanism is equipped with a connecting plate, which drives the connecting plate to move up and down. The connecting plate is equipped with a parallel component for parallel positioning of the reinforcing ribs. The limiting mechanism is rotatably connected to multiple first pressing rollers, which are placed at the same horizontal height and arranged in a parallel line. The limiting mechanism is connected to the pressing component, which drives the limiting mechanism to move up and down. The laser spot welding device faces between two adjacent first pressing rollers.
[0006] As a preferred embodiment, there are two pressing components, and the limiting mechanism has two first pressing rollers. The limiting mechanism includes two opposing adjusting components, each with a fixed bracket. The first pressing roller is located on the adjusting component, and a sliding bracket is slidably connected to the adjusting component. The adjusting component drives the sliding bracket to approach the fixed bracket by a certain distance. A second pressing roller is rotatably connected to the sliding bracket. The first pressing roller and the second pressing roller are coaxial, and the two second pressing rollers are arranged in a parallel line.
[0007] As a preferred embodiment, the adjustment component includes a mounting base, a fixed bracket fixedly connected to the mounting base, the mounting base connected to a pressing component, a first lead screw rotatably connected to the mounting base, a guide rail fixedly connected to the mounting base, the first lead screw and the guide rail being parallel to each other, a sliding bracket slidably connected to the first lead screw, and a sliding bracket slidably connected to the guide rail.
[0008] As a preferred embodiment, the pressing assembly includes a pressing cylinder, which is fixedly connected to the base via a mounting bracket, and the output shaft of the pressing cylinder is fixedly connected to the mounting base.
[0009] As a preferred embodiment, the positioning mechanism includes a positioning cylinder, which is fixedly connected to one of the mounting brackets, and the output shaft of the positioning cylinder is fixedly connected to the connecting plate.
[0010] As a preferred embodiment, the parallel assembly includes multiple positioning rods, which are fixedly connected to the connecting plate, and the multiple positioning rods are arranged in a parallel line on the connecting plate.
[0011] The beneficial effects of the pressing structure for assisting laser spot welding disclosed in this utility model are: The sheet metal part is fixed to the worktable clamping mechanism; the positioning mechanism drives the connecting plate to move down, so that the parallel component is close to the sheet metal, and then the reinforcing rib is placed on the sheet metal, and the parallel component corrects it to be parallel to the worktable travel path; After the reinforcing rib is positioned, the pressing component drives the fixed bracket to move downwards, and the first pressing roller presses the welding area of the reinforcing rib. The positioning mechanism then lifts the connecting plate, causing the parallel component to retract from the sheet metal and the reinforcing rib. The ball screw device drives the worktable to translate along the X-axis, and the sheet metal and the reinforcing rib pass under the laser spot welding device simultaneously. At this time, the limiting mechanism continuously presses the reinforcing rib with the first pressing roller to prevent it from shifting. The laser spot welding device continuously spot welds in the welding area, firmly welding the reinforcing rib to the sheet metal and avoiding the problem of traditional limiting components blocking the laser path. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a pressing structure for assisting laser spot welding according to this utility model.
[0013] Figure 2 This is a schematic diagram of the positioning mechanism of a pressing structure for assisting laser spot welding according to this utility model.
[0014] Figure 3 This is a schematic diagram of the operation of the positioning mechanism of the pressing structure for assisting laser spot welding according to this utility model.
[0015] Figure 4 This is a schematic diagram of the limiting mechanism of a pressing structure for assisting laser spot welding according to this utility model.
[0016] Figure 5 This is a schematic diagram of the operation of the limiting mechanism of the pressing structure for assisting laser spot welding according to this utility model. Detailed Implementation
[0017] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: refer to Figures 1-4 .
[0018] This utility model discloses a pressing structure for assisting laser spot welding, including a base 1, a laser spot welding device 21 and a limiting mechanism 5; The base 1 is fixedly connected to the base in the background art, and the base 1 is provided with a traveling mechanism 2, a positioning mechanism 4 and a pressing component 3; Furthermore, the traveling mechanism 2 includes a lead screw support, on which a second lead screw is rotatably connected, the second lead screw being perpendicular to the worktable surface in the prior art; one end of the second lead screw extends out of the lead screw support, and an adjusting wheel is fixedly connected to one end of the second lead screw; Furthermore, a limit bolt is connected to the lead screw bracket. By rotating the limit bolt, the limit bolt approaches and contacts the adjusting wheel, constraining the rotation of the adjusting wheel. A slide block is slidably connected to the lead screw bracket, and the slide block is slidably connected to the second lead screw. By rotating the adjusting wheel, the second lead screw is driven to rotate, thereby causing the slide to slide and rise on the lead screw support; Furthermore, the laser spot welding device 21 is slidably connected to the traveling mechanism 2; the laser spot welding device 21 is fixedly connected to the slide block, and the laser spot welding device 21 is slidably connected to the traveling mechanism 2 through the slide block; the laser spot welding device 21 faces the worktable, and the slide block drives the laser spot welding device 21 to move up and down, so as to quickly adjust the distance between the laser spot welding device 21 and the worktable, thereby focusing.
[0019] refer to Figures 2-5 .
[0020] In this embodiment, two pressing components 3 are preferred. The pressing component 3 includes a pressing cylinder 32, which is fixedly connected to the base 1 through a mounting bracket 31. The two pressing cylinders 32 are arranged at intervals, and the output shaft of the pressing cylinder 32 faces the worktable.
[0021] The positioning mechanism 4 includes a positioning cylinder 41, which is fixedly connected to one of the mounting brackets 31, and the output shaft of the positioning cylinder 41 faces the worktable. Furthermore, the positioning mechanism 4 is provided with a connecting plate 411, the output shaft of the positioning cylinder 41 is fixedly connected to the middle part of the connecting plate 411, and the connecting plate 411 is provided with a parallel component 42. Furthermore, the parallel component 42 includes multiple positioning rods 421. In this embodiment, it is preferred that there are two positioning rods 421 on the connecting plate 411. The two positioning rods 421 are fixedly connected to both ends of the connecting plate 411 respectively. The positioning rods 421 are parallel to the output shaft of the positioning cylinder 41. The two positioning rods 421 are arranged in parallel in a straight line on the connecting plate 411. The positioning cylinder 41 drives the connecting plate 411 to descend, causing the two positioning rods 421 to approach the sheet metal 6 fixed on the workbench; when the operator places the reinforcing rib 61 on the sheet metal 6, one side of the reinforcing rib 61 is pressed against the two positioning rods 421, thereby achieving parallel positioning of the reinforcing rib 61.
[0022] The limiting mechanism 5 includes two opposing adjustment components 51, and each adjustment component 51 includes a mounting base 511. Furthermore, the output shaft of the pressing cylinder 32 is fixedly connected to the mounting base 511, and the output shaft of the pressing cylinder 32 drives the mounting base 511 to perform lifting and lowering movements; Furthermore, the adjusting component 51 is provided with a fixed bracket 52. In this embodiment, the fixed bracket 52 is preferably L-shaped, and one end of the fixed bracket 52 is fixedly connected to one end of the mounting base 511. A sliding bracket 53 is slidably connected to the adjusting component 51. In this embodiment, the sliding bracket 53 is preferably L-shaped, and one end of the sliding bracket 53 is slidably connected to one end of the mounting base 511. The adjusting component 51 drives the sliding bracket 53 to approach the fixed bracket 52 by a certain distance. Furthermore, a first lead screw 512 is rotatably connected to the mounting base 511, and a guide rail 513 is fixedly connected to the mounting base 511. The first lead screw 512 and the guide rail 513 are parallel to each other. One end of the first lead screw 512 extends out of the mounting base 511, and a handwheel 514 is fixedly connected to one end of the first lead screw 512. One end of the sliding bracket 53 is slidably connected to the first lead screw 512, and one end of the sliding bracket 53 is slidably connected to the guide rail 513. By rotating the handwheel 514, the first lead screw 512 is rotated, thereby causing the sliding bracket 53 to slide on the guide rail 513 closer to or further away from the fixed bracket 52. Furthermore, a plurality of first pressing rollers 521 are rotatably connected to the limiting mechanism 5. In this embodiment, it is preferred that there are two first pressing rollers 521 on the limiting mechanism 5. The two first pressing rollers 521 are placed at the same horizontal height and arranged in parallel in a straight line. The first pressing rollers 521 are rotatably connected to the other end of the fixed bracket 52, and the two first pressing rollers 521 are close to each other. Furthermore, a second pressing roller 531 is rotatably connected to the sliding bracket 53. The first pressing roller 521 and the second pressing roller 531 are coaxial, and the two second pressing rollers 531 are arranged in parallel in a straight line. After the parallel positioning of the reinforcing rib 61 is completed, the output shaft of the pressing cylinder 32 pushes the mounting base 511 down, so that the first pressing roller 521 and the second pressing roller 531 press the welding areas on both sides of the reinforcing rib 61 respectively, limiting the reinforcing rib 61 on the sheet metal 6. The positioning cylinder 41 drives the connecting plate 411 to rise, so that the two positioning rods 421 move away from the reinforcing rib 61.
[0023] refer to Figures 1-5 .
[0024] During work: The clamping mechanism fixes the 6 sheet metal parts to the workbench; the output shaft of the positioning cylinder 41 pushes the connecting plate 411 down, so that the two positioning rods 421 are close to the fixed sheet metal 6; when the operator places the reinforcing rib 61 on the sheet metal 6, it makes one side of the reinforcing rib 61 close to the two positioning rods 421, so as to achieve parallel positioning of the reinforcing rib 61. After parallel positioning is completed, the output shaft of the pressing cylinder 32 pushes the mounting base 511 down, so that the first pressing roller 521 and the second pressing roller 531 press the welding areas on both sides of the reinforcing rib 61 respectively, thereby limiting the reinforcing rib 61 to the sheet metal 6; then the positioning cylinder 41 pulls the connecting plate 411 up, so that the two positioning rods 421 move away from the reinforcing rib 61; The ball screw device drives the worktable to translate along the X-axis, so that the sheet metal 6 and the reinforcing rib 61 pass under the laser spot welding device 21 simultaneously. During this process, the limiting mechanism 5 continuously presses the reinforcing rib 61 with the first pressing roller 521 and the second pressing roller 531 to prevent it from shifting. The laser spot welding device 21 performs continuous spot welding on the moving welding area, thereby firmly welding the reinforcing rib 61 to the sheet metal 6. After spot welding is completed, the output shaft of the pressing cylinder 32 pulls the mounting base 511 upward, so that the first pressing roller 521 and the second pressing roller 531 release the constraint on the reinforcing rib 61.
[0025] This utility model provides a pressing structure for assisting laser spot welding, which fixes the sheet metal part to the worktable clamping mechanism; the positioning mechanism drives the connecting plate to move down, so that the parallel component is close to the sheet metal, and then the reinforcing rib is placed on the sheet metal, and the parallel component corrects it to be parallel to the worktable travel path; After the reinforcing rib is positioned, the pressing component drives the fixed bracket to move downwards, and the first pressing roller presses the welding area of the reinforcing rib. The positioning mechanism then lifts the connecting plate, causing the parallel component to retract from the sheet metal and the reinforcing rib. The ball screw device drives the worktable to translate along the X-axis, and the sheet metal and the reinforcing rib pass under the laser spot welding device simultaneously. At this time, the limiting mechanism continuously presses the reinforcing rib with the first pressing roller to prevent it from shifting. The laser spot welding device continuously spot welds in the welding area, firmly welding the reinforcing rib to the sheet metal and avoiding the problem of traditional limiting components blocking the laser path.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A pressing structure for assisting laser spot welding, used for welding reinforcing ribs, characterized in that, Includes a base, a laser spot welding device, and a limiting mechanism; The base is provided with a traveling mechanism, a positioning mechanism and a pressing component. The laser spot welding device is slidably connected to the traveling mechanism, and the traveling mechanism drives the laser spot welding device to perform lifting and lowering movements. The positioning mechanism is provided with a connecting plate, and the positioning mechanism drives the connecting plate to move up and down. The connecting plate is provided with a parallel component, which is used to position the reinforcing rib in parallel. The limiting mechanism is rotatably connected to a plurality of first pressing rollers, which are placed at the same horizontal height and arranged in a parallel line. The limiting mechanism is connected to the pressing component, which drives the limiting mechanism to move up and down. The laser spot welding device is oriented between two adjacent first pressing rollers.
2. The pressing structure for assisting laser spot welding as described in claim 1, characterized in that, There are two pressing components, and there are two first pressing rollers on the limiting mechanism. The limiting mechanism includes two opposing adjusting components. A fixed bracket is provided on the adjusting component. The first pressing roller is located on the adjusting component. A sliding bracket is slidably connected to the adjusting component. The adjusting component drives the sliding bracket to approach the fixed bracket by a certain distance. A second pressing roller is rotatably connected to the sliding bracket. The first pressing roller and the second pressing roller are coaxial. The two second pressing rollers are arranged in parallel in a straight line.
3. The pressing structure for assisting laser spot welding as described in claim 2, characterized in that, The adjustment assembly includes a mounting base, a fixed bracket fixedly connected to the mounting base, a mounting base connected to a pressing assembly, a first lead screw rotatably connected to the mounting base, a guide rail fixedly connected to the mounting base, the first lead screw and the guide rail being parallel to each other, a sliding bracket slidably connected to the first lead screw, and a sliding bracket slidably connected to the guide rail.
4. The pressing structure for assisting laser spot welding as described in claim 3, characterized in that, The pressing assembly includes a pressing cylinder, which is fixedly connected to the base via a mounting bracket, and the output shaft of the pressing cylinder is fixedly connected to the mounting base.
5. The pressing structure for assisting laser spot welding as described in claim 4, characterized in that, The positioning mechanism includes a positioning cylinder, which is fixedly connected to one of the mounting brackets, and the output shaft of the positioning cylinder is fixedly connected to a connecting plate.
6. The pressing structure for assisting laser spot welding as described in claim 5, characterized in that, The parallel assembly includes multiple positioning rods, which are fixedly connected to the connecting plate. The multiple positioning rods are arranged in a parallel line on the connecting plate.