Metal and carbon fiber composite material laser connecting device based on synchronous filling wire rolling
Through the laser connection device for synchronous wire-filling rolling, the combination of wire feeding tube and rolling roller is used to achieve efficient and low-cost connection between carbon fiber composite materials and metals, and solves the problem of long and high cost of improving connection strength in the prior art.
Patent Information
- Application Number
- CN202422107933.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In the prior art, the process flow of the connection strength of carbon fiber composite materials and metals is long and has high cost, which cannot meet industrial production needs.
Using a laser connection device based on synchronous filler rolling, wire is fed to the docking point through a wire feeding tube. The laser scans the molten wire material, rolls the molten wire material to the interface, forms a joint, and adds to the connection between metal and carbon fiber composite.
It realizes high-strength connection, short processing time and low cost, avoids direct damage to the plate by laser, and has a simple structure.
Smart Images
Figure CN223173595U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laser connection, in particular to a laser connection device for metal and carbon fiber composite materials based on synchronous wire filling and rolling Background Technique
[0002] With the demand for lightweight in the development process of the manufacturing field, the connection of dissimilar lightweight materials has been widely used as an important way in advanced manufacturing fields such as aerospace, rail transit, and automobiles. Among them, carbon fiber composite materials are often used to form composite structures with lightweight metals to replace the original metals for weight reduction due to their excellent physical properties. In airplanes, various material structures including carbon fiber composite materials and titanium alloys are often used. For every 1 kg reduction in the weight of an airplane, nearly 120 liters of fuel reserve can be generated. In the manufacturing process of new energy vehicles, various material structures including carbon fiber composite materials and aluminum alloys are often used. If the overall vehicle weight is reduced by 10%, the energy consumption efficiency can be increased by 6% - 8%, and the cruising range can be increased by 5.5%.
[0003] Compared with traditional connection methods such as bonding and mechanical fastening, laser connection, as an emerging connection method, has the advantages of concentrated energy, small spot size, narrow heat affected zone, small post-weld deformation, low overall welding residual stress level of the welded workpiece, and easy realization of automated flexible welding. It is a high-efficiency, high-precision, and automated welding method, and is increasingly favored in the connection of carbon fiber composite materials and metals. The interfacial strength between the composite material and the metal determines the fatigue life, safety, and reliability of the composite material structure. Generally, surface treatment methods are used to improve the connection strength between the metal and the carbon fiber composite material, but the process flow time is long and the processing cost is high, which cannot meet the industrial production requirements. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a laser connection device for metal and carbon fiber composite materials based on synchronous wire filling and rolling that can improve the connection strength, has a short processing time, and a low processing cost.
[0005] To achieve the above object, the laser connection device for metal and carbon fiber composite materials based on synchronous wire filling and rolling proposed by the utility model includes:
[0006] A bearing platform for bearing the butt-placed metal plate and carbon fiber composite plate;
[0007] The melting and rolling assembly includes a laser, a rolling roller, and a connecting arm. The laser and the rolling roller are fixedly connected through the connecting arm. The laser is collinear with the butt joint of the metal sheet and the carbon fiber composite sheet. The rolling roller is arranged at the rear side in the advancing direction of the laser and can move along the butt joint of the metal sheet and the carbon fiber composite sheet together with the laser through the connecting arm. And,
[0008] The wire feeding assembly includes a wire feeding tube, a driver, and a robotic arm. The robotic arm can move relative to the carrying platform. The wire feeding tube and the driver are installed at the end of the robotic arm and are arranged at the front side in the advancing direction of the laser. The driver is used to convey the wire material into the wire feeding tube, and the wire feeding tube is used to convey the wire material to the butt joint of the metal sheet and the carbon fiber composite sheet.
[0009] Optionally, the melting and rolling assembly further includes a driver, which is drivingly connected to the connecting arm to drive the laser on the connecting arm to perform laser scanning along the butt joint of the metal sheet and the carbon fiber composite sheet, and to drive the rolling roller to perform rolling along the butt joint of the metal sheet and the carbon fiber composite sheet.
[0010] Optionally, the melting and rolling assembly further includes a pneumatic device, which is connected to the rolling roller to make the rolling roller roll the butt joint with a preset pressure.
[0011] Optionally, the robotic arm can move relative to the carrying platform and drive the wire feeding tube to approach or move away from the butt joint of the metal sheet and the carbon fiber composite sheet.
[0012] Optionally, the wire feeding tube is arranged in the driver;
[0013] A sliding structure is provided between the driver and the robotic arm. The sliding structure includes a sliding groove and a sliding block that are slidably connected in a matching manner. One of the sliding groove and the sliding block is arranged on the driver, and the other is arranged on the robotic arm, so that the driver can slide relative to the robotic arm along the length direction of the robotic arm.
[0014] Optionally, the metal sheet is a light alloy sheet;
[0015] The material of the carbon fiber composite sheet is a carbon fiber reinforced thermoplastic resin matrix composite material.
[0016] Optionally, the wire material is a thermoplastic resin wire material.
[0017] In the technical solution of the present utility model, during laser connection, the wire feeding tube feeds wire to the butt joint of the two workpieces to be connected. During laser connection, the wire feeding tube feeds wire to the butt joint of the metal plate and the carbon fiber composite plate. The laser scans along the wire at the butt joint, and the wire is heated and melted. At the same time, the rolling roller rolls the heated and melted wire along the scanning path of the laser, so that the melted wire flows under the pressure of the rolling roller and evenly spreads to the surface and tiny gaps at the butt joint of the metal plate and the carbon fiber composite plate. After cooling and solidifying, a joint is formed. In this way, the laser connection between the metal plate and the carbon fiber composite plate is realized in an additive manufacturing manner, avoiding direct damage to the plates by the laser, and improving the connection strength through the rolling roller. The processing flow is short, the structure is simple, and the processing cost is low. Brief Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0019] Figure 1 It is a schematic structural diagram of an embodiment of a laser connection device for metal and carbon fiber composite materials based on synchronous wire filling and rolling provided by the present utility model;
[0020] Figure 2 For Figure 1 Partial schematic structural diagram of the laser connection device for metal and carbon fiber composite materials based on synchronous wire filling and rolling during laser connection.
[0021] Explanation of the reference numerals in the drawings:
[0022]
[0023]
[0024] The realization of the purpose, functional characteristics, and advantages of the present utility model will be further described with reference to the embodiments and the drawings. Detailed Embodiments
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.
[0027] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
[0028] Compared with traditional connection methods such as bonding and mechanical fastening, laser connection, as an emerging connection method, has the advantages of concentrated energy, small spot size, narrow heat-affected zone, small post-weld deformation, low overall welding residual stress level of the workpiece after welding, and easy realization of automated flexible welding. It is a high-efficiency, high-precision, and automated welding method and is increasingly favored in the connection of carbon fiber composites and metals. The interfacial strength between the composite material and the metal determines the fatigue life, safety, and reliability of the composite material structure. Generally, surface treatment methods are used to improve the connection strength between the metal and the carbon fiber composite material, but the process flow time is long and the processing cost is high, which cannot meet the industrial production requirements.
[0029] In view of this, the present invention provides a laser connection device 100 for metals and carbon fiber composites based on synchronous wire filling and rolling Figure 1 and Figure 2 is an embodiment of the laser connection device 100 for metals and carbon fiber composites based on synchronous wire filling and rolling provided by the present invention.
[0030] Please refer to Figure 1 and Figure 2 , the laser connection device 100 for metal and carbon fiber composite materials based on synchronous wire filling and rolling includes a bearing platform 1, a melting and rolling assembly 2, and a wire feeding assembly 3. The bearing platform 1 is used to bear the butt-placed metal sheet 200 and carbon fiber composite sheet 300; the melting and rolling assembly 2 includes a laser 21, a rolling roller 22, and a connecting arm 23. The laser 21 and the rolling roller 22 are fixedly connected through the connecting arm 23. The laser 21 is collinear with the butt joint of the metal sheet and the carbon fiber composite sheet. The rolling roller is arranged at the rear side in the advancing direction of the laser 21 and can move along the butt joint of the metal sheet 200 and the carbon fiber composite sheet 300 through the connecting arm 23; the wire feeding assembly 3 includes a wire feeding tube 31, a transmission device 32, and a robotic arm 33. The robotic arm 33 can move relative to the bearing platform 1. The wire feeding tube 31 and the transmission device 32 are installed at the end of the robotic arm 33 and are arranged at the front side in the advancing direction of the laser 21. The transmission device 32 is used to convey the wire material into the wire feeding tube 31, and the wire feeding tube 31 is used to convey the wire material to the butt joint of the metal sheet 200 and the carbon fiber composite sheet 300.
[0031] In the technical solution of the present utility model, during laser connection, the wire feeding tube 31 feeds wire to the butt joint of the metal sheet 200 and the carbon fiber composite sheet 300. The laser 21 scans along the wire material 400 at the butt joint. The wire material 400 is heated and melted. At the same time, the rolling roller 22 rolls the heated and melted wire material 400 along the scanning path of the laser 21, so that the molten wire material 400 flows under the pressure of the rolling roller 22 and evenly diffuses to the surface and tiny gaps at the butt joint of the metal sheet 200 and the carbon fiber composite sheet 300. After cooling and solidifying, a joint is formed. In this way, the laser connection of the metal sheet 200 and the carbon fiber composite sheet 300 is realized in an additive manufacturing manner, avoiding direct damage to the sheets by the laser, and improving the connection strength through the rolling roller. The processing flow is short, the structure is simple, and the processing cost is low.
[0032] It should be noted that in an embodiment of the present utility model, the metal sheet 200 is a lightweight alloy sheet (such as a titanium alloy sheet, an aluminum alloy sheet, or a magnesium alloy sheet, etc.), and the material of the carbon fiber composite sheet 300 is a carbon fiber reinforced thermoplastic resin matrix composite material. Additionally, in an embodiment of the present utility model, the wire material 400 is a thermoplastic resin wire material.
[0033] It should also be noted that in the present utility model, the metal sheet 200 and the carbon fiber composite sheet 300 can be fixed to the bearing platform 1 by a fixture, or can be clamped to the bearing platform 1 through a card slot, etc.
[0034] Further, please refer to Figure 1 and Figure 2 , the melting and rolling assembly 2 further includes a driver, and the driver is drivingly connected to the connecting arm 23 to drive the laser 21 on the connecting arm 23 to perform laser scanning along the docking joint of the metal sheet 200 and the carbon fiber composite sheet 300, and to drive the rolling roller 22 to roll along the docking joint of the metal sheet 200 and the carbon fiber composite sheet 300.
[0035] It should be noted that in the present utility model, the driver can be directly connected to the connecting arm 23, or can be indirectly connected to the connecting arm 23. For example, it is indirectly connected to the connecting arm 23 by directly connecting to the rolling roller 22 or the laser 21, so as to drive the entire melting and rolling assembly 2 to move along the second direction.
[0036] Further, in the present utility model, the form of the driver is not limited, and it can be a driving motor, or a driving cylinder, etc.
[0037] Specifically, the melting and rolling assembly 2 further includes a pneumatic device, and the pneumatic device is connected to the rolling roller 22 to make the rolling roller 22 roll the docking joint with a preset pressure. In this way, the magnitude of the acting force of the rolling roller 22 on the docking joint is controlled by the pneumatic device to ensure the connection strength between the metal sheet 200 and the carbon fiber composite sheet 300.
[0038] Specifically, in the present utility model, the robotic arm 33 can move relative to the bearing platform 1 and drive the wire feeding tube 31 to approach or move away from the docking joint of the metal sheet 200 and the carbon fiber composite sheet 300; in this way, the position of the wire feeding tube 31 can be adjusted by the movement of the robotic arm 31, so that the relative position between the wire feeding tube 31 and the docking joint can be adjusted according to the actual situation, so that the wire outlet of the wire feeding tube 31 is adjusted to correspond to the focus of the laser 21 to ensure the wire feeding efficiency of the wire feeding tube 31.
[0039] Further, please refer to Figure 1, the wire feeding tube 31 is arranged in the driver 32; a sliding mechanism 34 is arranged between the driver 32 and the robotic arm. The sliding mechanism 34 includes a sliding groove 341 and a sliding block 342 which are slidably connected in a matching manner. One of the sliding groove 341 and the sliding block 342 is arranged on the driver 32, and the other is arranged on the robotic arm 33, so that the driver 32 can slide relative to the robotic arm 33 along the length direction of the robotic arm 32. In this way, the driver 32 is slidably mounted on the robotic arm 33, thereby further adjusting the relative position between the wire feeding tube 31 and the docking part to finely control the wire feeding condition of the wire feeding tube.
[0040] Specifically, in an embodiment of the present invention, the wire feeding assembly 3 further includes a fixed seat; the robotic arm 33 includes a first movable arm and a second movable arm. One end of the first movable arm is rotatably arranged on the fixed seat, and one end of the second movable arm is rotatably connected to the other end of the first movable arm. In this way, the adjustable range of the position of the wire feeding tube is expanded, thereby improving the practicability of the laser connection device for metal and carbon fiber composites based on synchronous wire filling and rolling.
[0041] Specifically, please refer to Figure 1 , the wire feeding assembly 3 further includes a wire spool 500, and the wire material 400 is wound around the wire spool 500.
[0042] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims
1. A laser connection device for metal and carbon fiber composites based on synchronous wire feeding rolling, characterized in that, The laser connection device for metal and carbon fiber composites based on synchronous wire filling and rolling includes: A bearing platform for bearing the butted metal sheet and carbon fiber composite sheet; A melting and rolling assembly, including a laser, a rolling roller and a connecting arm. The laser and the rolling roller are fixedly connected through the connecting arm. The laser is collinear with the butting joint of the metal sheet and the carbon fiber composite sheet. The rolling roller is arranged at the rear side of the advancing direction of the laser and can move along the butting joint of the metal sheet and the carbon fiber composite sheet through the connecting arm with the laser; and, A wire feeding assembly, including a wire feeding tube, a transmission device and a robotic arm. The robotic arm can move relative to the bearing platform. The wire feeding tube and the transmission device are installed at the end of the robotic arm and are arranged at the front side of the advancing direction of the laser. The transmission device is used to convey the wire into the wire feeding tube, and the wire feeding tube is used to convey the wire to the butting joint of the metal sheet and the carbon fiber composite sheet.
2. The laser connection device for metal and carbon fiber composites based on synchronous wire filling rolling according to claim 1, characterized in that, The melting and rolling assembly further includes a driver, and the driver is drivingly connected to the connecting arm to drive the laser on the connecting arm to perform laser scanning along the butting joint of the metal sheet and the carbon fiber composite sheet, and to drive the rolling roller to perform rolling along the butting joint of the metal sheet and the carbon fiber composite sheet.
3. The laser connection device for metal and carbon fiber composites based on synchronous wire filling rolling according to claim 2, wherein, The melting and rolling assembly further includes a pneumatic device, and the pneumatic device is connected to the rolling roller to make the rolling roller roll the butting joint with a preset pressure.
4. The laser connection device for metal and carbon fiber composites based on synchronous wire filling rolling according to claim 1, wherein, The robotic arm can move relative to the bearing platform and drive the wire feeding tube to approach or move away from the butting joint of the metal sheet and the carbon fiber composite sheet.
5. The laser connection device for metal and carbon fiber composites based on synchronous wire filling rolling according to claim 4, characterized in that, The wire feeding tube is arranged in the transmission device; A sliding structure is arranged between the transmission device and the robotic arm. The sliding structure includes a sliding groove and a sliding block that are slidably connected in a matching manner. One of the sliding groove and the sliding block is arranged on the transmission device, and the other is arranged on the robotic arm, so that the transmission device can slide relative to the robotic arm along the length direction of the robotic arm.
6. The laser connection device for metal and carbon fiber composites based on synchronous wire filling rolling according to claim 1, characterized in that, The metal sheet is a lightweight alloy sheet; The material of the carbon fiber composite sheet is a carbon fiber reinforced thermoplastic resin matrix composite.
7. The laser connection device for metal and carbon fiber composites based on synchronous wire feeding rolling as claimed in claim 1, wherein, The wire is a thermoplastic resin wire.