Electric vehicle wheel hub steel ring welding device

Abstract

The utility model discloses an electric vehicle wheel hub steel ring welding device belongs to welding equipment technical field, including base, a plurality of positioning units and a plurality of abutting mechanisms, and the main shaft is fixed on the base, a plurality of positioning units are with the main shaft as the center and are distributed in the circumference, and each positioning unit includes fixed link and movable sleeve, a plurality of abutting mechanisms are fixed in movable sleeve end portion of a plurality of positioning units respectively, and are used for abutting steel ring, the utility model sets up a plurality of positioning units with the main shaft as the center and is distributed in the circumference, and driving mechanism can drive a plurality of movable sleeves to move on fixed link simultaneously, thereby making a plurality of abutting mechanisms can synchronous telescoping, can realize annular self-centering positioning and abutting of steel ring, and all abutting mechanisms are synchronous tightening, and the outer ring of steel ring is abutted to the inside, makes the both ends of steel ring joint to abut to the joint, ensures that steel ring keeps stable in the welding process, improves welding accuracy to improve welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a welding device for electric vehicle wheel hub steel rims. Background Technology

[0002] As a key component of electric vehicles, the welding quality of electric vehicle wheel rims directly affects the safety and lifespan of the vehicle. Traditional electric vehicle wheel rim welding processes typically employ manual welding or simple mechanical positioning welding methods. Manual welding has several drawbacks, such as the weld quality being greatly affected by the worker's skill level and working conditions, easily leading to uneven welds, inconsistent weld strength, and unstable product quality. While simple mechanical positioning welding improves welding efficiency to some extent, it still has shortcomings in positioning accuracy. For example, some positioning devices can only provide positioning in one direction, failing to provide omnidirectional and precise positioning of the rim, causing the rim to easily shift or deform during welding, affecting the weld quality. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a welding device for electric vehicle wheel hub steel rims, which can self-center and clamp the steel rim to maintain its stable position, thereby ensuring that both sides of the weld seam maintain a clamping force and thus improving the welding quality.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a welding device for electric vehicle wheel hub steel rims, comprising:

[0005] A base on which a main shaft is fixed;

[0006] Multiple positioning units are distributed circumferentially around a main shaft. Each positioning unit includes a fixed rod and a movable sleeve. The fixed rod is fixedly connected to a base, and the movable sleeve is fitted onto the fixed rod. A drive mechanism is provided on the main shaft to drive the movable sleeve to move on the fixed rod.

[0007] Multiple clamping mechanisms are fixed to the movable sleeve ends of multiple positioning units to clamp the steel ring;

[0008] The base is provided with a welding torch and a moving mechanism for moving the welding torch.

[0009] Preferably, the drive mechanism includes:

[0010] A sliding sleeve, which is fitted onto the main shaft;

[0011] Multiple connecting rods correspond one-to-one with multiple movable sleeves. One end of each connecting rod is hinged to a sliding sleeve, and the other end is hinged to the corresponding movable sleeve.

[0012] When the sliding sleeve moves on the main shaft, the movable sleeve moves on the fixed rod.

[0013] Preferably, a longitudinal rod is fixed on the base, a mounting plate is fixed on the top of the longitudinal rod, a first electric push rod is fixedly mounted on the mounting plate, and the movable end of the first electric push rod is fixedly connected to the sliding sleeve.

[0014] Preferably, the clamping mechanism includes:

[0015] The fixed base is fixed to the end of the movable sleeve;

[0016] Multiple clamping rollers are mounted on a fixed base.

[0017] Preferably, the fixed base is provided with an adjustment mechanism for adjusting the position of the clamping roller.

[0018] Preferably, the adjustment mechanism includes:

[0019] Multiple through slots, each with a slider slidably installed inside;

[0020] Multiple adjusting rods are rotatably installed in multiple through slots and threadedly engaged with the slider.

[0021] The roller shafts of multiple pressing rollers are respectively fixed on multiple sliders.

[0022] Preferably, the moving mechanism includes:

[0023] Two guide posts are provided, which are parallel to the main shaft. A base plate is fixed below the base, and the guide posts are fixed to the base plate.

[0024] The second electric push rod is fixed on the base plate. The movable end of the second electric push rod is fixed with a lifting platform sleeved on two guide columns. The welding gun is set on the lifting platform.

[0025] Preferably, a third electric push rod perpendicular to the second electric push rod is fixed on the lifting platform, and the welding torch is fixed to the movable end of the third electric push rod.

[0026] Preferably, the multiple positioning units include four basic positioning units and two fine positioning units. The four basic positioning units are evenly distributed circumferentially around the main axis, and the clamping mechanisms at the ends of the two fine positioning units are located on both sides of the weld.

[0027] Preferably, the fixed rod is provided with a guide key, and the inner wall of the movable sleeve is provided with a sliding groove that slides with the guide key.

[0028] The beneficial effects of this utility model are as follows:

[0029] This invention features multiple positioning units circumferentially distributed around a main shaft. A drive mechanism simultaneously moves multiple movable sleeves onto a fixed rod, allowing multiple clamping mechanisms to extend and retract synchronously. This enables the steel ring to achieve self-centering positioning and clamping in a ring shape. All clamping mechanisms tighten synchronously, pressing the outer ring of the steel ring inwards and ensuring the two ends of the steel ring joint are pressed against the joint, guaranteeing stability during welding, improving welding precision, and thus enhancing welding quality. Four basic positioning units provide overall circumferential support for the steel ring, ensuring overall positioning stability. Two fine positioning units focus on both sides of the weld, reducing local deformation in the weld area through close-range clamping and limiting, thereby improving welding quality. Adjusting the position of the clamping rollers with an adjusting rod allows the multiple clamping rollers in a single clamping mechanism to better conform to the curved surface of the steel ring. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A perspective view of the overall structure of an electric vehicle wheel hub steel rim welding device provided for an embodiment of this utility model.

[0032] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0033] Figure 3 for Figure 1 A magnified view of a section at point B.

[0034] Figure 4 This is a top view of an electric vehicle wheel hub steel rim welding device provided in an embodiment of the present utility model.

[0035] Figure 5 for Figure 4 A magnified view of a section at point C.

[0036] Figure 6 A side view of an electric vehicle wheel hub steel rim welding device provided for an embodiment of this utility model.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Base, 2. Main shaft, 3. Positioning unit, 31. Fixed rod, 32. Movable sleeve, 4. Welding gun, 5. Sliding sleeve, 6. Connecting rod, 7. Longitudinal rod, 8. Mounting plate, 9. First electric push rod, 10. Fixed seat, 11. Pressing roller, 12. Through groove, 13. Slider, 14. Adjusting rod, 15. Guide column, 16. Base plate, 17. Second electric push rod, 18. Lifting platform, 19. Third electric push rod, 20. Guide key, 21. Basic positioning unit, 22. Fine positioning unit, 23. Steel ring. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Example 1:

[0041] like Figures 1 to 6 As shown, Embodiment 1 of this utility model provides a welding device for electric vehicle wheel hub steel rim 23, used for welding the joints of steel rim 23. The device includes a base plate 16 and a base 1 fixed on the base plate 16. A main shaft 2 coaxial with the base 1 is fixed on the base 1. The device is provided with a total of six positioning units 3, which can be divided into four basic positioning units 21 and two fine positioning units 22.

[0042] like Figure 4 As shown, four basic positioning units 21 are evenly distributed circumferentially around the main shaft 2. The clamping mechanisms on these units provide initial circumferential clamping and positioning of the steel ring 23, ensuring the overall stability of its position. The clamping mechanisms at the ends of the two fine positioning units 22 are located on both sides of the weld. The fine positioning units 22 provide targeted positioning and clamping for the weld area. Because the weld area is subject to thermal stress during welding, it is prone to local shrinkage or warping. The fine positioning units 22 can apply directional clamping force to both sides of the weld to suppress this deformation.

[0043] The basic positioning unit 21 and the fine positioning unit 22 have the same basic structure, both including a fixed rod 31 and a movable sleeve 32. The fixed rod 31 is firmly fixed to the base 1, providing stable support for the movement of the movable sleeve 32. The axis of the fixed rod 31 coincides with the radial direction of the main shaft 2. The movable sleeve 32 is sleeved on the fixed rod 31 and can move on the fixed rod 31. To prevent the movable sleeve 32 from rotating on the fixed rod 31 and causing the clamping mechanism to rotate, a guide key 20 is provided on the fixed rod 31, and a sliding groove is formed on the inner wall of the movable sleeve 32 to slide in cooperation with the guide key 20.

[0044] To simultaneously drive all movable sleeves 32 to move on the fixed rod 31, thereby ensuring that all clamping mechanisms are equidistant from the center of the steel ring 23, the drive mechanism of this invention automatically aligns the center of the steel ring 23 with the center of the main shaft 2. The drive mechanism includes a sliding sleeve 5 fitted onto the main shaft 2. A mounting plate 8 is fixed to the base 1 via multiple longitudinal rods 7, and a first electric push rod 9 is fixedly mounted on the mounting plate 8. The movable end of the first electric push rod 9 is fixedly connected to the sliding sleeve 5, allowing it to push the sliding sleeve 5 to move on the main shaft 2. Six connecting rods 6 are hinged to the sliding sleeve 5, each hinged to one of the six movable sleeves 32. Through the transmission of the connecting rods 6, the linear motion of the sliding sleeve 5 is converted into radial movement of the movable sleeves 32 on the fixed rod 31. This structure ensures that multiple movable sleeves 32 move synchronously, resulting in uniform clamping force applied to the steel ring 23, preventing deformation of the steel ring 23 due to uneven force.

[0045] The fixed seat 10 in the clamping mechanism is fixed to the end of the movable sleeve 32, and the three clamping rollers 11 are fixedly installed on the fixed seat 10.

[0046] In use, first place the steel ring 23 on the fixed base 10, at which point the clamping roller 11 is located outside the steel ring 23. Then, start the first electric push rod 9 to drive the movable sleeve 32 to move towards the main shaft 2, so that the clamping roller 11 is tangential to the outer wall of the steel ring 23, thus clamping the steel ring 23. Then, use the moving mechanism to control the movement of the welding torch 4, so that the welding torch 4 can perform welding along the position of the weld seam.

[0047] Example 2:

[0048] Based on Embodiment 1, and considering that in actual production, electric vehicle wheel hub steel rims 23 of different specifications may be encountered, such as steel rims 23 of different diameters and thicknesses, Embodiment 2 demonstrates how to adapt to these different specifications of steel rims 23 by adjusting the position of the clamping roller 11.

[0049] When welding steel rings 23 of different specifications, manually adjust the adjusting mechanism in the clamping mechanism to match the distribution of the clamping rollers 11 with the curvature of the steel ring 23. For example... Figure 2 As shown, three parallel through slots 12 are provided on the fixed base 10. A slider 13 is slidably installed in each through slot 12. An adjusting rod 14 is rotatably installed in the through slot 12 and threadedly engaged with the slider 13. The adjusting rod 13 is a lead screw. The roller shaft of the pressing roller 11 is fixed on the corresponding slider 13. By rotating the adjusting rod 14, the displacement of the slider 13 in the through slot 12 can be precisely controlled, thereby achieving precise adjustment of the position of the pressing roller 11.

[0050] For steel rings 23 with larger diameters, the clamping rollers 11 on both sides can be adjusted outwards to ensure they fully contact the outer edge of the steel ring 23, providing sufficient clamping force. For steel rings 23 with smaller diameters, the clamping rollers 11 on both sides can be adjusted inwards. For steel rings 23 with different thicknesses, the position of the clamping rollers 11 can also be adjusted to ensure the clamping force is applied to the appropriate position on the steel ring 23, avoiding welding deviations or deformation caused by improper clamping. This adjustment method is convenient to operate, and the slider 13 remains stable after adjustment, adapting to diverse welding needs.

[0051] Example 3:

[0052] Based on Embodiments 1 and 2, this utility model has specifically designed the moving mechanism. After the steel ring 23 is accurately pressed against the ground, the moving mechanism on the other side of the base plate 16 starts to work, controlling the movement of the welding torch 4.

[0053] like Figure 1 As shown, two vertical guide columns 15 are parallel to the main shaft 2. The lifting platform 18 is fitted onto the two guide columns 15. The guide columns 15 provide linear guidance for the movement of the lifting platform 18, enhancing its resistance to eccentric loads and ensuring smooth movement of the lifting platform 18. The two ends of the second electric push rod 17 are fixedly connected to the lifting platform 18 and the base plate 16, respectively. The second electric push rod 17 can push the lifting platform 18 up and down, allowing the welding torch 4 to reach a suitable welding height. Then, the third electric push rod 19 on the lifting platform 18 controls the horizontal movement of the welding torch 4, allowing the welding torch 4 to approach the weld seam. The third electric push rod 19 is perpendicular to the second electric push rod 17. With the cooperation of the third electric push rod 19 and the second electric push rod 17, the welding torch 4 can approach the weld seam of the steel ring 23 and move along the weld seam to perform welding operations on the steel ring 23.

[0054] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A welding device for electric vehicle wheel hub steel rims, characterized in that, include: A base on which a main shaft is fixed; Multiple positioning units are distributed circumferentially around a main shaft. Each positioning unit includes a fixed rod and a movable sleeve. The fixed rod is fixedly connected to a base, and the movable sleeve is fitted onto the fixed rod. A drive mechanism is provided on the main shaft to drive the movable sleeve to move on the fixed rod. Multiple clamping mechanisms are fixed to the movable sleeve ends of multiple positioning units to clamp the steel ring; The base is provided with a welding torch and a moving mechanism for moving the welding torch.

2. The electric vehicle wheel hub steel rim welding device as described in claim 1, characterized in that, The drive mechanism includes: A sliding sleeve, which is fitted onto the main shaft; Multiple connecting rods correspond one-to-one with multiple movable sleeves. One end of each connecting rod is hinged to a sliding sleeve, and the other end is hinged to the corresponding movable sleeve. When the sliding sleeve moves on the main shaft, the movable sleeve moves on the fixed rod.

3. The electric vehicle wheel hub steel rim welding device as described in claim 2, characterized in that, A longitudinal rod is fixed on the base, and a mounting plate is fixed on the top of the longitudinal rod. A first electric push rod is fixedly mounted on the mounting plate, and the movable end of the first electric push rod is fixedly connected to the sliding sleeve.

4. The electric vehicle wheel hub steel rim welding device as described in claim 1, characterized in that, The clamping mechanism includes: The fixed base is fixed to the end of the movable sleeve; Multiple clamping rollers are mounted on a fixed base.

5. The electric vehicle wheel hub steel rim welding device as described in claim 4, characterized in that, The fixed base is equipped with an adjustment mechanism for adjusting the position of the clamping roller.

6. The electric vehicle wheel hub steel rim welding device as described in claim 5, characterized in that, The adjustment mechanism includes: Multiple through slots, each with a slider slidably installed inside; Multiple adjusting rods are rotatably installed in multiple through slots and threadedly engaged with the slider. The roller shafts of multiple pressing rollers are respectively fixed on multiple sliders.

7. The electric vehicle wheel hub steel rim welding device as described in claim 1, characterized in that, The moving mechanism includes: Two guide posts are provided, which are parallel to the main shaft. A base plate is fixed below the base, and the guide posts are fixed to the base plate. The second electric push rod is fixed on the base plate. The movable end of the second electric push rod is fixed with a lifting platform sleeved on two guide columns. The welding gun is set on the lifting platform.

8. The electric vehicle wheel hub steel rim welding device as described in claim 7, characterized in that, A third electric push rod, perpendicular to the second electric push rod, is fixed on the lifting platform, and the welding torch is fixed to the movable end of the third electric push rod.

9. The electric vehicle wheel hub steel rim welding device as described in claim 1, characterized in that, The multiple positioning units include four basic positioning units and two fine positioning units. The four basic positioning units are evenly distributed circumferentially around the main axis, and the clamping mechanisms at the ends of the two fine positioning units are located on both sides of the weld.

10. The electric vehicle wheel hub steel rim welding device as described in claim 1, characterized in that, The fixed rod is provided with a guide key, and the inner wall of the movable sleeve is provided with a sliding groove that slides in cooperation with the guide key.

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