Spin welding auxiliary device

Abstract

The utility model relates to a rotary welding auxiliary device, which comprises a fixed seat (10); one end of the fixing shaft (7) is connected with the fixing seat (10), and the other end of the fixing shaft (7) is connected with a fixing block matched with a workpiece to be welded; and the rotating assembly is connected with the fixing shaft (7) through a support, and the rotating assembly abuts against the workpiece to be welded in the rotating welding process. Compared with the prior art, the fixed shaft and the rotating assembly are arranged, the fixed shaft is connected with the rotating assembly through the support, and a workpiece to be welded is placed between the fixed shaft and the rotating assembly to be fixed during welding, so that the bearing fixing flange in the rotating assembly and the support rotate together; therefore, spot welding fixation in advance is not needed while it is guaranteed that the position of the workpiece is relatively fixed, a laser light path cannot be shielded during welding, and continuous rotary welding is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a rotary welding auxiliary device. Background Art

[0002] When laser welding is used, since the welded products need to ensure airtightness and moisture content, it is necessary to ensure the integrity of the weld seam during welding. This not only requires precise positioning of the products, but also requires that the products do not move relative to each other during welding. Currently, when welding, usually several points of the two workpieces to be welded are first welded for positioning, and then they are placed in a welding jig for welding. Although this method can complete the product welding, the several positioning weld points may be penetrated due to repeated welding, and only a part of the product can be welded at a time during welding, and the position of the product needs to be adjusted to achieve full welding. This not only increases the risk of repeated welding positioning but also increases the welding time, and the phenomenon of penetration may occur, resulting in a high scrap rate of the products.

[0003] In summary, there is currently a lack of a rotary welding auxiliary device that does not require pre-spot welding for fixation. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned existing technologies and provide a rotary welding auxiliary device to assist in realizing rotary welding without pre-spot welding for fixation.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The utility model provides a rotary welding auxiliary device, including:

[0007] A fixed seat;

[0008] A fixed shaft, one end of which is connected to the fixed seat, and the other end is connected with a fixed block matching the workpiece to be welded;

[0009] A rotating assembly, which is connected to the fixed shaft through a bracket, and during the rotary welding process, the rotating assembly abuts against the workpiece to be welded.

[0010] As a preferred technical solution, the rotating assembly includes:

[0011] A bearing fixing flange, which is connected to the bracket;

[0012] A first bearing, which is connected to the bearing fixing flange;

[0013] A pressure bar, which is connected to the bearing fixing flange, and during the rotary welding process, the pressure bar abuts against the workpiece to be welded.

[0014] As a preferred technical solution, the rotating assembly further includes:

[0015] A guide sleeve, which is matched with the first bearing.

[0016] As a preferred technical solution, the pressure rod includes a rod body and a rod head, and the rod body and the rod head are threadedly connected.

[0017] As a preferred technical solution, the bracket includes:

[0018] A cross bar, which is connected with the rotating assembly;

[0019] A plurality of support rods, one end of which is connected with the cross bar;

[0020] A fixed rod, which is connected with the other ends of the plurality of support rods, and the fixed rod is movably connected with the fixed shaft.

[0021] As a preferred technical solution, the plurality of support rods are arranged in pairs, and each pair of support rods is symmetrically arranged with respect to the fixed shaft.

[0022] As a preferred technical solution, the fixed rod is movably connected with the fixed shaft through a second bearing.

[0023] As a preferred technical solution, the fixed seat, the fixed shaft and the rotating assembly are coaxially arranged.

[0024] As a preferred technical solution, the rotating assembly is symmetric about the rotation axis.

[0025] As a preferred technical solution, one end of the fixed shaft connected with the fixed seat is narrowed unilaterally.

[0026] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0027] (1) Assist in realizing rotary welding without pre-spot welding: By setting the fixed shaft and the rotating assembly, and connecting the fixed shaft with the rotating assembly through the bracket, when welding, the workpiece to be welded is placed between the fixed shaft and the rotating assembly for fixation, so that the bearing fixing flange in the rotating assembly and the bracket rotate together, so that while ensuring the relative fixation of the workpiece position, pre-spot welding is not required, and the laser light path will not be blocked during welding, realizing continuous rotary welding.

[0028] (2) The device has strong stability: The overall structure of the bracket is rotationally symmetric, and the fixed seat, the fixed shaft and the rotating assembly are coaxially arranged, ensuring the dynamic balance performance of the rotating assembly during rotation. By setting the first bearing and the second bearing, on the premise of ensuring the relative fixation of the workpiece position, the bracket can rotate, ensuring stability. Description of the Drawings

[0029] Figure 1 Schematic three-dimensional view of the rotary welding auxiliary device in the embodiment;

[0030] Figure 2 Top view of the rotary welding auxiliary device in the embodiment;

[0031] Figure 3 For Figure 2 Cross-sectional view along the A-A direction in

[0032] Figure 4 Schematic view of the position for placing the workpiece to be welded in the embodiment;

[0033] Figure 5 Schematic view of the fixed shaft in the embodiment,

[0034] wherein, 1. Bearing fixing flange; 2. Cross bar; 3. Support rod; 4. First bearing 1; 5. Guide sleeve; 6. Pressing rod; 7. Fixed shaft; 8. Second bearing 2; 9. Fixed rod; 10. Fixed seat; 11. Pin; 12. Product to be welded; w. Weld seam. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0038] In view of the problems existing in the aforementioned prior art, this embodiment provides a rotary welding auxiliary device. Refer to Figure 1 , Figure 2 , Figure 3 which are respectively the three-dimensional view, the top view, and the sectional view in the A-A direction of the device. Specifically, the device includes a fixed seat 10, a fixed shaft 7, and a rotating assembly. One end of the fixed shaft 7 is connected to the fixed seat 10, and the other end is connected with a fixed block matching the workpiece to be welded. The rotating assembly is connected to the fixed shaft 7 through a bracket. During the rotary welding process, the rotating assembly abuts against the workpiece to be welded. During welding, the rotating assembly and the bracket in the jig (i.e., the rotary welding auxiliary device) can rotate with the laser head, and the jig will not block the optical path of the laser, so that continuous welding can be carried out, and thus the product can be completed by one-time rotary welding.

[0039] Refer to Figure 4 , Figure 5 which are respectively the top view and the three-dimensional view of the fixed shaft 7. One end of the fixed shaft 7 connected to the fixed seat 10 is narrowed on one side, and the narrowed surface is connected to the fixed seat 10 through screws to realize the fixation between the fixed shaft 7 and the fixed seat 10. Preferably, the fixed block is provided with a groove matching the workpiece to be welded, which can further ensure the stability of the workpiece fixation.

[0040] Furthermore, the rotating assembly includes a bearing fixing flange 1 connected to the bracket, and a pressure rod 6 connected to the bearing fixing flange 1 through a first bearing 4. During the rotary welding process, the pressure rod 6 abuts against the workpiece to be welded and remains relatively stationary with the workpiece to be welded, while the bearing fixing flange 1 and the bracket can rotate around the fixed shaft 7 under the action of an external force.

[0041] Preferably, the rotating assembly further includes a guide sleeve 5 matching the first bearing 4. By providing the guide sleeve 5 covering the first bearing 4, the lubrication characteristics of the bearing can be ensured to a large extent, ensuring that the bracket will not drive the product to be welded to rotate when rotating. In addition, the tightness of the first bearing 4 can be improved, and the expected service life in a dusty scenario can be increased.

[0042] Preferably, the pressure rod 6 includes a rod body and a rod head. The rod body part is connected to the bearing fixing flange 1 through a first bearing 4. The rod head is made of a material with high friction and has a relatively large contact surface to ensure the friction between the rod head and the workpiece to be welded is increased without affecting welding, ensuring that the position of the workpiece to be welded will not be affected when the bracket rotates. The rod body and the rod head are connected by threads.

[0043] Preferably, the rotating assembly is symmetric about the axis of rotation.

[0044] Furthermore, the bracket includes a cross bar 2 connected to the rotating assembly and at least a pair of support rods 3. One end of the support rod 3 is connected to the cross bar 2, and the other end is connected to both ends of the fixed rod 9. The fixed rod 9 is movably connected to the fixed shaft 7 through a second bearing 8, forming a "zhong" (Chinese character for middle) shaped structure. During welding, when the bracket rotates under the action of an external force, the moment of inertia is isolated from the workpiece to be welded through the first bearing 4 and the second bearing 8, ensuring that the workpiece remains relatively stationary.

[0045] Preferably, the support rods 9 are symmetrically arranged with respect to the fixed shaft 7, and the fixed seat 10, the fixed shaft 7, and the rotating assembly are coaxially arranged.

[0046] The assembly process of this device is as follows: insert the second bearing 8 into the fixed rod 9 and fix the bearing with a grub screw or other screws, fasten the support rod 3 to the fixed rod 9 with screws, then insert the second bearing 8 and the fixed rod 9 into the fixed seat 10, insert the fixed shaft 7 into the hole of the fixed seat 10, and fasten the fixed shaft 7 with a grub screw or other screws. Assemble the first bearing 4 and the pressure rod 6 together with the bearing fixing flange 1 and the guide sleeve 5, and connect them to the support rod 3 with a pin 11 or screws to complete the assembly of the device.

[0047] The working principle of this device is as follows: fix the assembled jig on the fixture of the welding equipment, then rotate the bearing flange 1 to move the pressure rod 6 upward so as to place the workpiece to be welded on the fixed shaft 7. There is a corresponding shape at the upper end of the fixed shaft 7 to position the product. After the product is placed on the fixed shaft 7, rotate the bearing flange 1 to fix the product with the pressure rod 6 to complete the product positioning. Turn on the external welding equipment and perform focusing and program setting. During welding, the welding platform of the equipment will move according to the shape of the product. During the movement, the cross bar 2 of the jig will rotate following the laser welding head. Since the jig rotates, it will not block the laser light path, and continuous welding can be achieved. After the welding program is completed, rotate the bearing flange 1 to take out the welded product and complete the welding.

[0048] During welding, in order to enable the cross bar 2 of the jig to rotate following the laser welding head during the movement, the cross bar 2 (or the bracket, the bearing fixing flange 1) can be connected to the laser welding head, or an actuator such as a motor can be installed on the cross bar 2 (or the bracket, the bearing fixing flange 1). There is no limitation here.

[0049] In summary, for the problems of workpiece positioning and continuous welding during welding, this device can rotate around the laser head along with the movement of the equipment fixture during welding. The jig will not block the laser light path, so continuous welding can be achieved, and thus the product can be completed in one welding. Using this device to assist in welding can increase the stability of the weld seal and ensure the airtightness of the welded part, thereby reducing the rejection rate and the manufacturing cost.

[0050] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A rotary welding auxiliary device, characterized in that, Comprising: Fixed seat (10); Fixed shaft (7), one end of which is connected to the fixed seat (10), and the other end is connected with a fixed block matching the workpiece to be welded; Rotating assembly, connected to the fixed shaft (7) through a bracket, and during the rotary welding process, the rotating assembly abuts against the workpiece to be welded.

2. The rotary welding auxiliary device according to claim 1, characterized in that, The rotating assembly includes: Bearing fixing flange (1), connected to the bracket; First bearing (4), connected to the bearing fixing flange (1); Pressing rod (6), connected to the bearing fixing flange (1), and during the rotary welding process, the pressing rod (6) abuts against the workpiece to be welded.

3. The rotary welding auxiliary device according to claim 2, characterized in that, The rotating assembly further includes: Guide sleeve (5), matching the first bearing (4).

4. A rotary welding auxiliary device according to claim 2, characterized in that, The pressing rod (6) includes a rod body and a rod head, and the rod body and the rod head are threadedly connected.

5. A rotary welding auxiliary device according to claim 1, characterized in that, The bracket includes: Cross bar (2), connected to the rotating assembly; Multiple support rods (3), one end of which is connected to the cross bar (2); Fixed rod (9), connected to the other ends of the multiple support rods (3), and the fixed rod (9) is movably connected to the fixed shaft (7).

6. The rotary welding auxiliary device according to claim 5, characterized in that, The multiple support rods (3) are arranged in pairs, and each pair of support rods (3) is symmetrically arranged with respect to the fixed shaft (7).

7. The rotary welding auxiliary device according to claim 5, characterized in that, The fixed rod (9) is movably connected to the fixed shaft (7) through a second bearing (8).

8. The rotary welding auxiliary device according to claim 1, characterized in that, The fixed seat (10), the fixed shaft (7) and the rotating assembly are coaxially arranged.

9. The rotary welding auxiliary device according to claim 1, wherein, The rotating assembly is symmetric about the axis of rotation.

10. A rotary welding auxiliary device according to claim 1, characterized in that, One end of the fixed shaft (7) connected to the fixed seat (10) is narrowed on one side.

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