Double-welding-wire circular seam laser welding equipment for release bearing sleeve

Abstract

The utility model discloses double-welding-wire circular seam laser welding equipment for a release bearing sleeve. The double-welding-wire circular seam laser welding equipment comprises an auxiliary supporting platform, a tool rotating system, a double-welding-wire welding system and a control system. The tool rotating system comprises a three-jaw self-centering clamping jaw and a planetary reducer-servo motor driving unit, the three-jaw self-centering clamping jaw clamps the inner sleeve and drives a workpiece to rotate at a constant speed, and centering and rotating precision is guaranteed; the double-welding-wire welding system comprises a welding gun and a double-way wire feeding mechanism, and the double-way wire feeding mechanism achieves stable conveying and accurate centering of double wires through an access sleeve, an independent pushing section, a connecting hose and a converging sending-out shell. And the control system is electrically connected with the two systems to realize parameter closed-loop linkage control. Through structural optimization, the automatic welding device has clamping universality, wire feeding stability and control accuracy, the welding efficiency and the welding seam quality are effectively improved, the product consistency is guaranteed, and the automatic welding device is suitable for batch high-precision welding production of release bearing sleeves.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a laser welding equipment for double-wire circumferential seam of a release bearing sleeve. Background Technology

[0002] The release bearing sleeve is a core load-bearing component of the automotive clutch system. It is formed by welding the inner sleeve and outer ring together coaxially. The quality of the circumferential weld directly determines the structural strength, coaxial accuracy, and service life of the sleeve, thus affecting the smoothness of clutch disengagement and the overall vehicle stability. Currently, the circumferential weld of the release bearing sleeve mostly uses single-wire welding or traditional double-wire welding equipment, which has many technical drawbacks: single-wire welding has low deposition efficiency, making it difficult to adapt to the needs of mass production, and the concentrated welding heat input can easily lead to workpiece deformation, affecting coaxiality; the wire feeding mechanism of traditional double-wire welding equipment is poorly designed, and the double wire feeding is prone to entanglement and speed crosstalk problems, and the wire feeding centering accuracy is poor, resulting in uneven weld formation; at the same time, the clamping mechanism of existing equipment is mostly designed for clamping the outer ring, with insufficient centering accuracy, which can easily cause rotational vibration when combined with ordinary drive units, further aggravating welding deviations; in addition, there is a lack of effective closed-loop linkage control, and the rotation speed, wire feeding speed and welding parameters cannot be accurately matched, resulting in poor welding stability and defects such as incomplete welds, porosity, and insufficient weld strength.

[0003] To solve the above-mentioned technical problems, there is an urgent need for a dual-wire circumferential welding equipment for release bearing sleeves that integrates high-precision clamping, stable dual-wire feeding, and precise linkage control. This equipment can improve welding efficiency while ensuring weld quality and product consistency, thus meeting the high-precision production requirements of automotive parts. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art.

[0005] This application provides a laser welding device for the circumferential weld of a release bearing sleeve using dual welding wires, including an auxiliary support platform, a tooling rotation system, and a dual welding wire system; the tooling rotation system is used to clamp the release bearing sleeve, and the dual welding wire system is used to perform circumferential weld at the connection between the inner sleeve and the outer ring of the release bearing sleeve.

[0006] Furthermore, the tooling rotation system includes a clamping mechanism and a drive unit; the clamping mechanism is used to clamp the outer ring of the release bearing sleeve, and the drive unit is used to drive the clamping mechanism to rotate the workpiece at a uniform speed to ensure the uniformity of the circumferential weld.

[0007] Furthermore, the clamping mechanism is a three-jaw self-centering clamp, which is adapted to the outer ring of the release bearing sleeve with different outer diameter specifications.

[0008] Furthermore, it also includes a control system; the control system is electrically connected to the tooling rotation system and the dual-wire welding system respectively, so as to realize closed-loop linkage control of rotation speed, wire feeding speed and welding parameters, thereby improving welding stability.

[0009] Furthermore, the drive unit of the tooling rotation system includes a planetary reducer and a servo motor; the output end of the servo motor is connected to the input end of the planetary reducer, and the output end of the planetary reducer is fixedly installed with the clamping mechanism.

[0010] Furthermore, the dual-wire welding system includes a welding torch and a dual-path wire feeding mechanism; the dual-path wire feeding mechanism can independently feed two welding wires, precisely control the spacing between the two wires and the wire feeding speed, and work with the welding torch to synchronously perform circumferential welding on the connection between the inner sleeve and the outer ring of the release bearing sleeve.

[0011] Furthermore, the dual-path wire feeding mechanism includes a welding wire reel, a reducer, a motor, two wire feeding channels, and several wire feeding rollers; the motor drives the reducer to rotate, causing the wire feeding rollers in each wire feeding channel to rotate synchronously, and the wire feeding rollers are in contact with the welding wire to achieve stable pushing, so that the two strands of welding wire wound on the welding wire reel are respectively transported to the welding area through the two wire feeding channels.

[0012] Furthermore, the wire feeding channel includes an inlet sleeve, a converging and discharging shell, and two independent pushing sections. After the two strands of welding wire are drawn out from the welding wire reel, they are first guided by the inlet sleeve to avoid tangling, and then enter their respective independent pushing sections for stable feeding. Finally, they are precisely joined together by the converging and discharging shell and fed to the welding area of ​​the welding gun. Each wire feeding roller is correspondingly installed in the two independent pushing sections to ensure that the two wires are fed without interference.

[0013] Furthermore, the converging delivery shell is mounted on the welding torch via a bracket, allowing for fine adjustment of the relative position between the converging delivery shell and the welding torch nozzle.

[0014] Furthermore, the wire feeding channel also includes a pair of connecting hoses; the connecting hoses are respectively connected to the inner cavity of the converging feed shell and two independent pushing sections, and have flexible adjustment capabilities to adapt to the welding torch posture adjustment requirements.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. Combining centering accuracy and clamping versatility: The three-jaw self-centering jaws clamp the inner sleeve of the release bearing sleeve, applying force evenly from three points around the inner sleeve, which can automatically correct the coaxiality of the inner sleeve, thereby ensuring the coaxial accuracy of the inner and outer rings after assembly and avoiding welding defects caused by clamping deviations; at the same time, it is compatible with inner sleeves of different inner diameter specifications, without the need to change special clamping fixtures, significantly improving clamping efficiency and versatility.

[0017] 2. Stable and precise wire feeding with dual wires: By optimizing the wire feeding channel structure and setting up an access sleeve, two independent pushing sections, connecting hoses, and a converging delivery shell, a "unified guidance-independent delivery-precise merging" feeding process for dual wires is achieved, effectively avoiding problems such as wire entanglement and speed interference. The connecting hose has flexible adjustment capabilities, which, together with the bracket, allows for fine-tuning of the converging delivery shell position, ensuring precise alignment between the dual wires and the welding torch nozzle, and improving the quality of weld formation.

[0018] 3. Precise and controllable rotary drive: The drive unit adopts a combination structure of planetary reducer and servo motor, which has a significant effect of speed reduction and torque increase, high transmission efficiency and small backlash. It can accurately convert the speed command of servo motor into workpiece rotation motion, avoid speed lag and jitter, and achieve stepless adjustment from 0.5 to 5 r / min to adapt to the welding requirements of different thicknesses and materials, and ensure the uniformity of circumferential weld.

[0019] 4. Dual improvement in welding stability and efficiency: The control system achieves closed-loop linkage control of rotation speed, wire feeding speed, and welding parameters, and collects and adjusts various parameters in real time to ensure that the workpiece rotation speed and the welding wire deposition speed are matched. At the same time, it has safety protection functions such as clamping position detection and welding gun anti-collision to avoid welding deviation and equipment failure. Compared with single-wire welding, dual-wire synchronous deposition improves deposition efficiency by more than 40%, and shortens the welding time of a single workpiece while ensuring weld strength, which is suitable for batch production needs.

[0020] 5. Strong structural adaptability: The overall structure has a high degree of integration. The auxiliary support platform integrates functions such as welding torch adjustment and automatic torch cleaning. The connecting hose is adapted to the welding torch posture adjustment. All components work together to adapt to the welding needs of different specifications of release bearing sleeves. The equipment is highly practical and easy to maintain. Attached Figure Description

[0021] Figure 1 This is a perspective view of the laser welding equipment for the double-wire circumferential seam of the separation bearing sleeve in the embodiments of this application;

[0022] Figure 2 This is a perspective view of the laser welding equipment for the double-wire circumferential seam of the separator bearing sleeve in the embodiments of this application.

[0023] Figure Labels

[0024] 1-Auxiliary support platform, 2-Tooling rotation system, 3-Dual welding wire welding system, 5-Clamping mechanism, 6-Drive unit, 61-Planetary reducer, 62-Servo motor, 7-Welding torch, 8-Dual wire feeding mechanism, 81-Welding wire reel, 82-Wire feeding motor, 83-Wire feeding reducer, 84-Wire feeding channel, 841-Inlet sleeve, 842-Converging delivery shell, 843-Independent pushing section, 844-Connecting hose, 85-Wire feeding roller, 9-Bracket, 10-Inner sleeve, 11-Outer ring, 12-Welding wire. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] The laser welding equipment for the double-wire circumferential seam of the release bearing sleeve provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0028] Example 1

[0029] This application provides a laser welding device for the circumferential weld of a release bearing sleeve using a double-wire welding system, including an auxiliary support platform 1, a tooling rotation system 2, and a double-wire welding system 3; the tooling rotation system 2 is used to clamp the release bearing sleeve, and the double-wire welding system 3 is used to perform circumferential weld at the connection between the inner sleeve 10 and the outer ring 11 of the release bearing sleeve.

[0030] In this embodiment of the application, the tooling rotation system 2 includes a clamping mechanism 5 and a driving unit 6; the clamping mechanism 5 is used to clamp the inner sleeve 10 of the release bearing sleeve, and the driving unit 6 is used to drive the clamping mechanism 5 to rotate the workpiece at a uniform speed to ensure the uniformity of the circumferential weld.

[0031] In this embodiment of the application, the clamping mechanism 5 is a three-jaw self-centering jaw, which is adapted to the inner sleeve 10 of the release bearing sleeve with different inner diameter specifications.

[0032] like Figures 1 to 2As shown, due to the aforementioned structure, during equipment operation, the inner sleeve 10 and outer ring 11 of the release bearing sleeve are pre-coaxially assembled, placed on the auxiliary support platform 1, and aligned with the clamping area of ​​the tooling rotation system 2. Subsequently, the three-jaw self-centering jaws retract synchronously, uniformly clamping the workpiece from three points around the inner sleeve 10. Utilizing the centering characteristics of the three-jaw self-centering jaws, the coaxiality of the inner sleeve 10 is automatically corrected, thereby ensuring the coaxial accuracy of the inner sleeve 10 and outer ring 11 after assembly. This allows for the adaptation of inner sleeves 10 with different inner diameters without the need for additional positioning fixtures, improving efficiency. The clamping system offers versatility and efficiency. After clamping, the drive unit 6 starts and outputs power, driving the clamping mechanism 5, inner sleeve 10, and outer ring 11 to rotate synchronously at a constant speed. At the same time, the dual-wire welding system 3 starts, and the welding torch 7 is aligned with the circumferential welding position of the inner sleeve 10 and outer ring 11, simultaneously outputting the dual-strand welding wire 12 for welding. During the uniform rotation of the workpiece, each point of the circumferential seam passes through the welding area of ​​the welding torch 7 in sequence, and is synchronously deposited with the dual-strand welding wire 12, effectively avoiding defects such as weld accumulation and incomplete welding, and ensuring the uniformity and consistency of the circumferential seam welding.

[0033] Example 2

[0034] In this embodiment, in addition to the structural features of the aforementioned embodiments, a control system is also included; the control system is electrically connected to the tooling rotation system 2 and the dual-wire welding system 3 respectively, to realize closed-loop linkage control of rotation speed, wire feeding speed and welding parameters, thereby improving welding stability.

[0035] like Figures 1 to 2 As shown, due to the above-mentioned structure, the equipment operation logic is further optimized based on Embodiment 1, forming an automated closed-loop control process: After the workpiece is clamped, the operator presets parameters such as rotation speed, wire feeding speed, welding current, and laser power through the control system. The control system sends a start command to the tooling rotation system 2, and the drive unit 6 drives the clamped inner sleeve 10 and outer ring 11 to rotate at the preset speed. At the same time, the speed feedback signal of the drive unit 6 is collected in real time. Based on the feedback signal, the control system automatically matches the wire feeding speed of the dual welding wire welding system 3 to ensure the linear speed of workpiece rotation. The speed is matched with the deposition speed of welding wire 12. For example, when the workpiece rotation speed increases, the wire feeding speed of the two wires is increased simultaneously to ensure that the deposition amount per unit length of weld is constant. During the welding process, the control system continuously monitors parameters such as welding current and voltage. If parameter fluctuations occur (such as sudden changes in current or wire feeding jamming), the rotation speed or wire feeding speed is immediately fine-tuned to form a closed-loop control. At the same time, the control system has built-in safety detection logic. Welding operation is only allowed to start when the clamping mechanism 5 clamps the inner sleeve 10 into place, so as to avoid the workpiece loosening and welding deviation, and significantly improve the stability and reliability of the welding process.

[0036] Example 3

[0037] In this embodiment, in addition to the structural features of the aforementioned embodiments, the drive unit 6 of the tooling rotation system 2 includes a planetary reducer 61 and a servo motor 62; the output end of the servo motor 62 is connected to the input end of the planetary reducer 61, and the output end of the planetary reducer 61 is fixedly installed with the clamping mechanism 5.

[0038] like Figures 1 to 2 As shown, due to the above structure, the operating logic of the rotating drive part of the equipment is more precise and controllable: After startup, the servo motor 62 receives the speed command from the control system and outputs high-speed, low-torque power to the planetary reducer 61; the planetary reducer 61 reduces speed and increases torque through the internal gear transmission structure, converting the power into low-speed, high-torque output, which is transmitted to the clamping mechanism 5, thereby driving the clamped inner sleeve 10 and outer ring 11 to rotate synchronously; compared with the ordinary drive structure, the planetary reducer 61 has the advantages of high transmission efficiency and small backlash, which can ensure that the speed command of the servo motor 62 is accurately converted into the rotational motion of the workpiece, avoiding problems such as speed lag and jitter, and keeping the workpiece rotation accuracy within the preset range (speed adjustment range 0.5~5r / min); at the same time, the servo motor 62 can feed back the actual speed signal to the control system in real time, and with the stable transmission of the planetary reducer 61, stepless adjustment and precise closed-loop control of the rotation speed can be achieved, adapting to the welding requirements of circumferential seams of release bearing sleeves of different thicknesses and materials. For example, when welding thicker workpieces, the speed is reduced and the deposition amount is increased to ensure that the weld penetration meets the standard.

[0039] Example 4

[0040] In this embodiment, in addition to the structural features of the aforementioned embodiments, the dual-wire welding system 3 includes a welding torch 7 and a dual-path wire feeding mechanism 8; the dual-path wire feeding mechanism 8 can realize independent feeding of two welding wires 12, accurately control the spacing between the two wires and the wire feeding speed, and cooperate with the welding torch 7 to synchronously perform circumferential welding on the connection between the inner sleeve 10 and the outer ring 11 of the release bearing sleeve.

[0041] In this embodiment of the application, the dual-path wire feeding mechanism 8 includes a wire winding reel 81, a wire feeding reducer 83, a wire feeding motor 82, two wire feeding channels 84, and several wire feeding rollers 85. The wire feeding motor 82 drives the wire feeding reducer 83 to operate, which in turn drives the wire feeding rollers 85 in each wire feeding channel 84 to rotate synchronously. The wire feeding rollers 85 are in contact with the welding wire 12 to achieve stable pushing, and the double-strand welding wire 12 wound on the welding wire winding reel 81 is respectively transported to the welding area through the two wire feeding channels 84.

[0042] In this embodiment of the application, the wire feeding channel 84 includes an inlet sleeve 841, a converging and discharging shell 842, and two independent pushing sections 843. After the double-strand welding wire 12 is drawn out from the welding wire reel 81, it is first guided by the inlet sleeve 841 to avoid tangling, and then enters its respective independent pushing section 843 for stable feeding. Finally, it is precisely joined together by the converging and discharging shell 842 and then fed to the welding area of ​​the welding gun 7. Each wire feeding roller 85 is correspondingly inserted into the two independent pushing sections 843 to ensure that the double wire feeding does not interfere with each other.

[0043] In this embodiment of the application, the converging delivery shell 842 is mounted on the welding torch 7 via a bracket 9, and the relative position of the converging delivery shell 842 and the nozzle of the welding torch 7 can be finely adjusted.

[0044] In this embodiment of the application, the wire feeding channel 84 further includes a pair of connecting hoses 844; the connecting hoses 844 are respectively connected to the inner cavity of the converging feed shell 842 and the two independent push sections 843, and have flexible adjustment capabilities to adapt to the posture adjustment requirements of the welding torch 7.

[0045] like Figures 1 to 2 As shown, due to the above structure, the operating logic of the dual-wire welding system 3 forms a complete wire feeding-welding collaborative process: Before welding starts, the operator fine-tunes the position of the converging feed shell 842 through the bracket 9, aligning the output end of the two wires after they are joined with the center of the nozzle of the welding gun 7 to ensure welding centering accuracy; after starting, the wire feeding motor 82 of the dual-path wire feeding mechanism 8 drives the wire feeding reducer 83 to rotate, driving the wire feeding rollers 85 in the two independent pushing sections 843 to rotate synchronously. The wire feeding rollers 85 are in close contact with the surface of the welding wire 12, and the welding wire 12 is stably pushed through friction; after the two strands of welding wire 12 are drawn out from the welding wire reel 81, they first enter the receiving sleeve 841, where the receiving sleeve 841 uniformly combs and guides them to avoid the two wires from tangling and knotting in the initial stage of feeding; then the two wires enter their respective independent pushing sections 843. Driven by the wire feeding roller 85, the wire advances steadily along the wire feeding channel 84. The two channels are independent of each other, effectively avoiding mutual interference and speed crosstalk during the dual-wire feeding process. Then, the welding wire 12 enters the converging and feeding shell 842 through the connecting hose 844. The flexible characteristics of the connecting hose 844 can adapt to the posture adjustment of the welding torch 7, and will not cause wire feeding jamming due to the fine adjustment of the welding torch 7. Inside the converging and feeding shell 842, the two wires are precisely joined together at a preset interval and finally synchronously fed to the welding area of ​​the welding torch 7. With the help of the tooling rotation system 2, the inner sleeve 10 and the outer ring 11 rotate at a uniform speed to achieve synchronous fusion welding of the circumferential seam with the two wires. The wire feeding speed of the two wires can be independently adjusted by the control system to adapt to different welding process requirements. At the same time, the various structures work together to ensure the stability and centering of the dual-wire feeding, further improving the quality and consistency of the weld.

[0046] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0047] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A split bearing sleeve dual-wire girth laser welding apparatus, characterized by, The device comprises an auxiliary support platform, a tool rotating system and a double-wire welding system; the tool rotating system is used for clamping a separated bearing sleeve, and the double-wire welding system is used for ring seam welding at a connection between an inner sleeve and an outer ring of the separated bearing sleeve.

2. The split bearing sleeve dual-wire GTAW apparatus of claim 1, wherein, The tool rotating system comprises a clamping mechanism and a driving unit; the clamping mechanism is used for clamping the outer ring of the separated bearing sleeve, and the driving unit is used for driving the clamping mechanism to rotate the workpiece at a constant speed.

3. The split bearing sleeve dual-wire GTAW apparatus of claim 2, wherein, The clamping mechanism is a three-jaw self-centering clamp.

4. The split bearing sleeve dual-wire GTAW apparatus of claim 2, wherein, The device further comprises a control system; the control system is electrically connected with the tool rotating system and the double-wire welding system, realizes closed-loop linkage control of rotating speed and wire feeding speed and welding parameters, and improves welding stability.

5. The split bearing sleeve dual-wire GTAW apparatus of claim 2, wherein, The driving unit of the tool rotating system comprises a planetary reducer and a servo motor; an output end of the servo motor is connected with an input end of the planetary reducer, and an output end of the planetary reducer is fixedly installed with the clamping mechanism.

6. The split bearing sleeve dual-wire GTAW apparatus of claim 1, wherein, The double-wire welding system comprises a welding torch and a double-path wire feeding mechanism; the double-path wire feeding mechanism can realize independent wire feeding of two wires, accurately controls the distance between the two wires and the wire feeding speed, and synchronously performs ring seam welding on the connection between the inner sleeve and the outer ring of the separated bearing sleeve together with the welding torch.

7. The split bearing sleeve twin-wire ring seam laser welding apparatus of claim 6, wherein, The double-path wire feeding mechanism comprises a wire winding disc, a reducer, a motor, two wire feeding channels and a plurality of wire feeding rollers; the motor drives the reducer to rotate, drives the wire feeding rollers in the wire feeding channels to synchronously rotate, and the wire feeding rollers stably push the wires by being in close contact with the wires, so that the double wires wound on the wire winding disc are respectively fed to the welding area through the two wire feeding channels.

8. The split bearing sleeve twin-wire ring seam laser welding apparatus of claim 7, wherein, The wire feeding channel comprises an access sleeve, a merging and feeding shell and two independent pushing sections; after the double wires are led out from the wire winding disc, the double wires are first uniformly guided through the access sleeve to avoid winding, then respectively enter the independent pushing sections to complete stable feeding, and finally are accurately folded through the merging and feeding shell and then fed to the welding area of the welding torch; each wire feeding roller is correspondingly arranged in the two independent pushing sections, so that the feeding of the two wires does not interfere with each other.

9. The split bearing sleeve twin-wire ring seam laser welding apparatus of claim 8, wherein, The merging and feeding shell is installed on the welding torch through a support.

10. The split bearing sleeve dual-wire GTAW apparatus of claim 8, wherein, The wire feeding channel further comprises a pair of connecting hoses; the connecting hoses are respectively connected with the inner cavities of the merging and feeding shell and the two independent pushing sections.

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