Precise welding follow-up device
By using a precision welding follow-up device, steel ball rollers and return springs are used to keep the distance between the welding torch and the weld constant, solving the problem of unstable welding distance caused by changes in weld shape, and achieving stable and accurate welding quality.
Patent Information
- Application Number
- CN202423146467.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In precision mechanical welding, variations in weld morphology lead to inconsistent welding distances between the welding torch and the weld, affecting welding quality, especially penetration depth and weld uniformity.
A precision welding follow-up device is adopted, including a rotating disk, a follow-up welding assembly, a distance adjustment structure, and a drive structure. The distance between the welding torch and the weld seam is kept constant by steel ball rolling and a return spring. The position of the welding torch is adjusted by a cylinder-driven release block to ensure the relative position of the welding torch and the weld seam is stable.
It achieves stability in the distance between the welding torch and the weld when the weld shape changes, ensuring the stability and accuracy of the welding quality, protecting the welding torch from direct contact with the weld, and improving welding precision.
Smart Images
Figure CN223531726U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mechanical welding technology, and in particular to precision welding follow-up devices. Background Technology
[0002] In the current field of precision mechanical welding, the accuracy and stability of welding operations are crucial. Traditional mechanical welding systems typically employ two basic modes: one where the workpiece is fixed and the welding torch moves along a pre-set, fixed track; and the other where the welding torch is fixed while the workpiece moves along a specific, pre-set trajectory. Both modes have their application scenarios, but both rely on maintaining a high degree of consistency in the relative position between the welding torch and the weld seam to ensure stable welding quality.
[0003] However, in practical applications, the shape of the weld is often not completely flat, but may have unevenness. This variation poses a challenge to traditional welding modes with fixed welding torch and fixed track or fixed welding torch and moving workpiece. When the weld depth changes, the actual distance between the welding torch and the weld also changes, making it impossible to maintain a constant welding distance. The change in welding distance directly affects the heat transfer and molten pool formation during the welding process, thus adversely affecting the weld penetration and resulting in substandard weld quality, such as insufficient penetration and uneven weld. How to maintain a constant welding distance between the welding torch and the weld when the weld shape is complex and varied has become a key problem that urgently needs to be solved in current precision mechanical welding technology. Summary of the Invention
[0004] This device provides a precision welding follow-up device, which can solve the problem of unevenness in the weld seam during precision welding. By maintaining a constant distance between the welding torch and the weld seam when the workpiece and weld seam are fixed, a consistent weld penetration depth can be achieved, ensuring stable precision welding quality. The specific implementation method is as follows:
[0005] Precision welding follow-up device, including:
[0006] A rotating disk is arranged around the circumference of the workpiece, and a follow-up welding component is provided on the rotating disk;
[0007] The follow-up welding assembly consists of a welding torch, a pitch adjustment structure, and a drive structure. The pitch adjustment structure includes a pitch adjustment component that slides on a guide post, and a return spring is provided between the two. The pitch adjustment component is connected to the welding torch. The drive structure is a release block of an automatic telescopic component. The release block acts on the inclined surface of the pitch adjustment component. The telescopic arm of the automatic telescopic component is used to remove the welding torch from the welding position.
[0008] The welding torch head is equipped with driven steel ball rollers. The welding torch head is always in contact with the weld seam by the pressure given by the return spring. The steel ball rollers provide the welding torch with a follow-up effect on the weld seam.
[0009] Based on the above technical solutions, the steel ball roller and return spring can keep the welding distance constant. Even if the height of the weld changes, the welding torch can still change along the height of the weld under the action of the steel ball roller and return spring, thus keeping the distance between the welding torch and the weld constant.
[0010] Preferably, the steel ball roller is placed in the mounting cylinder, and the front end of the welding gun is provided with an L-shaped positioning plate, and the mounting cylinder is threaded to the L-shaped positioning plate.
[0011] Based on the above technical solutions, the distance between the welding torch and the weld seam of the workpiece is adjustable. By rotating the mounting cylinder, the distance between the welding torch and the weld seam can be adjusted to ensure a stable distance that meets the requirements for high-quality welding. The steel ball bearings and the welding torch needle must also maintain a reasonable distance. The distance from the steel ball bearings to the welding torch needle tip should be greater than half the distance of the welding arc, and the steel ball bearings should not be located within the welding arc range to avoid damage during welding. Simultaneously, to better ensure welding quality, the steel ball bearings should be as close as possible to the welding arc to better reflect the true condition of the weld seam and guarantee welding quality.
[0012] Preferably, both the pitch adjustment structure and the drive structure are mounted on a mounting base. The mounting base includes a flat U-shaped base, and the main body of the pitch adjustment component is a translation block connected to the welding torch. A guide post is located inside the U-shaped base, and a reset spring is sleeved on the outside of the guide post, between the end of the translation block and the inner wall of the U-shaped base.
[0013] Preferably, the U-shaped base is integrally provided with a vertical frame for mounting the cylinder, the translation block is provided with a ramp groove, and the release block is provided with an inclined structure corresponding to the ramp groove.
[0014] Based on the above technical solutions, the automatic telescopic component is preferably a pneumatic cylinder, but it can also be an electric cylinder or a screw structure driven by a motor. The pneumatic cylinder drives the release block to move the welding torch away from the weld seam. At this time, the weld seam of the workpiece is added, while ensuring that the welding torch does not come into direct contact with the weld seam of the workpiece, thus protecting the welding torch. As needed, the welding torch needle and the weld seam of the workpiece can be perpendicular, or they can be kept at a certain angle by adjusting the welding torch or the weld seam of the workpiece. During the welding process, the release block retracts, and the return spring always maintains pressure on the translation block, thereby keeping the distance between the welding torch and the weld seam of the workpiece constant during the welding process.
[0015] Preferably, it also includes a vertical plate on the rotating disk, the vertical plate integrating a motor-driven lead screw structure, the output end of the lead screw structure being a lifting frame connected to the mounting base.
[0016] Preferably, the vertical plate is provided with a bottom limit switch, and the side of the lifting frame is provided with an extension plate for pressing to trigger the limit switch.
[0017] Based on the above technical solution, a limit switch for bottom limit is installed on the vertical plate. This limit switch is used to accurately and reliably limit the position of the bottom of the lifting frame.
[0018] Preferably, a fixed disk is provided at the bottom of the rotating disk, and both the fixed disk and the rotating disk are designed with a C-shaped structure, with the opening used for the lateral introduction of the weldment.
[0019] Preferably, the lifting frame is provided with a pressure joint, the rotating disk is provided with an elastic pressure head, and the fixed disk is provided with a positioning hole. The pressure joint abuts against the elastic pressure head, and the elastic pressure head is vertically inserted into the positioning hole for the overlapping positioning of the opening positions between the rotating disk and the fixed disk.
[0020] Based on the above technical solutions, by using an elastic pressure head, a pressure joint, and a designed positioning hole, a stable and precise positioning of the rotating disk in the initial circumferential position is achieved.
[0021] In summary, this application includes the following beneficial technical effects:
[0022] 1. This utility model uses a steel ball roller and a return spring to maintain a constant welding distance. Even if the height of the weld changes, the welding torch can still change along the height of the weld under the action of the steel ball roller and the return spring, thereby keeping the distance between the welding torch and the weld constant.
[0023] 2. This utility model uses a cylinder to drive a release block, moving the welding torch away from the weld seam. At this time, the weld seam of the workpiece is added, while ensuring that the welding torch does not come into direct contact with the weld seam of the workpiece, thus protecting the welding torch.
[0024] 3. This utility model has a simple structure. It uses an elastic pressure head, a pressure joint, and a positioning hole to achieve the initial circumferential positioning of the rotating disk relative to the fixed disk. After determining the welding base point, circumferential rotation welding is performed, thereby improving the accuracy of subsequent welding. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;
[0026] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;
[0027] Figure 3 This is a schematic diagram of the structure of the follow-up welding assembly and the weldment in this utility model;
[0028] Figure 4This is a schematic diagram of the structure of the follower welding assembly in this utility model;
[0029] Figure 5 This is an exploded structural diagram of the follower welding assembly in this utility model;
[0030] Figure 6 This is a schematic diagram of the rotating disk and the fixed disk in this utility model.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Follow-up limit block; 2. Welding torch; 3. Guide column; 4. Return spring; 5. Adjustable distance component; 6. Release block; 7. Cylinder; 8. Mounting base; 9. Welded part; 10. Rotary disc; 11. Vertical plate; 12. Motor; 13. Lifting frame; 14. Press joint; 15. Limit switch; 16. Elastic pressure head; 17. Fixed disc; 18. Positioning hole; 19. Gear ring.
[0033] 101. Steel ball rolling ball; 102. Mounting cylinder; 103. Positioning plate; 501. Inclined groove; 502. Translation block; 801. U-shaped seat; 802. Vertical frame; 901. Weld. Detailed Implementation
[0034] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:
[0035] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.
[0036] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.
[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail.
[0038] This application discloses a precision welding follow-up device.
[0039] Example 1
[0040] Reference Figures 1 to 5This embodiment discloses a precision welding follow-up device, including a rotating disk 10 arranged circumferentially around the workpiece 9. The rotating disk 10 is provided with a follow-up welding assembly, which consists of a welding torch 2, an adjustment structure, and a drive structure. The adjustment structure includes an adjustment element 5 slidably disposed on a guide post 3, and a return spring 4 is provided between the two. The adjustment element 5 is connected to the welding torch 2. The drive structure is a release block 6 driven by a cylinder 7. The release block 6 acts on the inclined surface of the adjustment element 5. The cylinder 7 extends and retracts its air arm to remove the welding torch 2 from the welding position. In this structure, the head of the welding torch 2 is provided with a driven steel ball 101. The head of the welding torch 2 is always in contact with the weld 901 by the pressure given by the return spring 4. The steel ball 101 provides the welding torch 2 with a follow-up effect on the weld 901.
[0041] Both the pitch adjustment structure and the drive structure are mounted on the mounting base 8. The mounting base 8 includes a flat U-shaped base 801. The main body of the pitch adjustment component 5 is a translation block 502 connected to the welding torch 2. The guide post 3 is located inside the U-shaped base 801, and the reset spring 4 is sleeved on the outside of the guide post 3, between the end of the translation block 502 and the inner wall of the U-shaped base 801.
[0042] The steel ball 101 is installed in the mounting cylinder 102. The front end of the welding gun 2 extends to provide an L-shaped positioning plate 103. The mounting cylinder 102 is threaded to the L-shaped positioning plate 103. The U-shaped seat 801 is integrally provided with a vertical frame 802 for installing the cylinder 7. The translation block 502 is provided with a ramp groove 501, and the release block 6 is provided with an inclined structure corresponding to the ramp groove 501.
[0043] The specific implementation process is as follows: When welding workpiece 9, cylinder 7 retracts its air arm, and return spring 4 presses welding torch 2 and steel ball roller 101 to the weld seam 901 position. Rotating disk 10 rotates around workpiece 9 to achieve circumferential welding. During this period, return spring 4 keeps welding torch 2 in a reasonable welding distance state according to the unevenness of weld seam 901. After workpiece 9 is completed, cylinder 7 extends its air arm, so that release block 6 acts downward on inclined groove 501, thereby moving welding torch 2 away from workpiece 9. This can prevent damage to welding torch 2 when replacing workpiece 9.
[0044] Example 2
[0045] Reference Figures 1 to 2 Based on the above embodiments, this embodiment also discloses a precision welding follow-up device, which includes a vertical plate 11 disposed on the rotating disk 10. The vertical plate 11 integrates a lead screw structure driven by a motor 12. The output end of the lead screw structure is connected to a lifting frame 13 connected to the mounting base 8. The vertical plate 11 is provided with a bottom limit switch 15. The side of the lifting frame 13 is provided with an extension plate for pressing to trigger the limit switch 15. In this structure, the mounting base 8 and the lifting frame 13 are driven to rise and fall by the motor 12, thereby adjusting the welding height of the welding torch 2.
[0046] Example 3
[0047] Reference Figure 2 and Figure 6 Based on the above embodiments, this embodiment also discloses a precision welding follow-up device. A toothed ring 19 is added to the outer ring of the bottom of the rotating disk 10. A fixed disk 17 is rotatably connected to the inner side of the toothed ring 19. The toothed ring 19, the fixed disk 17 and the rotating disk 10 are all designed with a C-shaped structure. The opening is used for the lateral introduction of the weldment 9. A pressure joint 14 is provided on the lifting frame 13. An elastic pressure head 16 is provided on the rotating disk 10. A positioning hole 18 is provided on the fixed disk 17. In this structure, the pressure joint 14 abuts against the elastic pressure head 16. The elastic pressure head 16 is vertically inserted into the positioning hole 18 for the overlapping positioning of the opening positions between the rotating disk 10 and the fixed disk 17.
[0048] The specific implementation process is as follows: During the initial circumferential positioning, the motor 12 drives the lifting frame 13 to descend, so that the pressure joint 14 presses the elastic pressure head 16 and presses the elastic pressure head 16 into the positioning hole 18 to complete the initial positioning; after the positioning is completed, the motor 12 reverses and raises the lifting frame 13 and the pressure joint 14, and the elastic pressure head 16 automatically and elastically resets; the rotating disk 10 is engaged with the external drive source through the gear ring 19, and realizes the circumferential welding of the welding part 9 through its own rotation.
[0049] Example 4
[0050] Reference Figure 1 Unlike Embodiment 3, this embodiment also discloses a precision welding follow-up device. The workpiece 9 is fixed together with the rotating disk 10 and the fixed disk 17 by adding an external drive source to the base and fixing it by the welding gun 2. The workpiece 9 rotates, thereby realizing the circumferential follow-up welding operation of the workpiece 9.
[0051] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.
Claims
1. A precision welding follow-up device, characterized in that, include: A rotating disk (10) is arranged to rotate around the weldment (9) in a circumferential direction, and a follow-up welding assembly is provided on the rotating disk (10); The follow-up welding assembly consists of a welding torch (2), a distance adjustment structure and a drive structure. The distance adjustment structure includes a distance adjustment component (5) that is slidably disposed on a guide post (3), and a return spring (4) is provided between the two. The distance adjustment component (5) is connected to the welding torch (2). The drive structure is a release block (6) driven by an automatic telescopic component. The release block (6) acts on the inclined part of the distance adjustment component (5). The telescopic arm of the automatic telescopic component is used to remove the welding torch (2) from the welding position. The head of the welding torch (2) is provided with a driven steel ball (101). The head of the welding torch (2) is always in contact with the weld (901) by the pressure given by the return spring (4). The steel ball (101) provides the welding torch (2) with a follow-up effect on the weld (901).
2. The precision welding follow-up device according to claim 1, characterized in that, The steel ball roller (101) is disposed in the mounting cylinder (102), and the front end of the welding gun (2) is provided with an L-shaped positioning plate (103), and the mounting cylinder (102) is threaded to the L-shaped positioning plate (103).
3. The precision welding follow-up device according to claim 2, characterized in that, The pitch adjustment structure and the drive structure are both mounted on the mounting base (8). The mounting base (8) includes a flat U-shaped seat (801). The main body of the pitch adjustment component (5) is a translation block (502) connected to the welding torch (2). The guide post (3) is located inside the U-shaped seat (801), and the reset spring (4) is sleeved on the outside of the guide post (3), between the end of the translation block (502) and the inner wall of the U-shaped seat (801).
4. The precision welding follow-up device according to claim 3, characterized in that, The U-shaped base (801) is integrally provided with a vertical frame (802) for installing automatic telescopic components, the translation block (502) is provided with a ramp groove (501), and the release block (6) is provided with an inclined structure corresponding to the ramp groove (501).
5. The precision welding follow-up device according to claim 3, characterized in that, It also includes a vertical plate (11) on the rotating disk (10), on which a lead screw structure driven by a motor (12) is integrated, and the output end of the lead screw structure is a lifting frame (13) connected to the mounting base (8).
6. The precision welding follow-up device according to claim 5, characterized in that, The vertical plate (11) is provided with a bottom limit switch (15), and the side of the lifting frame (13) is provided with an extension plate that can be pressed to trigger the limit switch (15).
7. The precision welding follow-up device according to claim 5, characterized in that, The bottom of the rotating disk (10) is provided with a fixed disk (17). Both the fixed disk (17) and the rotating disk (10) are designed with a C-shaped structure, and their openings are used for the lateral introduction of the weldment (9).
8. The precision welding follow-up device according to claim 7, characterized in that, The lifting frame (13) is provided with a pressure joint (14), the rotating disk (10) is provided with an elastic pressure head (16), and the fixed disk (17) is provided with a positioning hole (18). The crimping head (14) abuts against the elastic crimping head (16), and the elastic crimping head (16) is vertically inserted into the positioning hole (18) for the overlapping positioning of the opening between the rotating disk (10) and the fixed disk (17).