Electrode stem correcting device
By designing an electrode rod straightening device, the electrode rod is gradually straightened using a straightening cam, which solves the welding quality problem caused by electrode rod bending, improves the utilization efficiency of the electrode rod, reduces the cost of use, and ensures welding quality and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-07
AI Technical Summary
During the welding process, the electrode rod is prone to bending due to collisions and other reasons, which leads to welding quality problems. Moreover, the existing technology lacks an effective correction device, which affects the utilization efficiency of the electrode rod and increases the cost of use.
An electrode rod straightening device is designed. By abutting the outer wall of the electrode rod with a straightening cam, the bent electrode rod is pushed back to its original position by gradually adjusting the radial direction of the straightening cam, so as to achieve gradual straightening, avoid excessive deformation in a short period of time that may lead to breakage, and ensure the convenience of loading, unloading and moving.
This improved the utilization efficiency of the electrode rod, reduced the cost of use, ensured welding quality, prevented electrode rod breakage, and enhanced the versatility and convenience of the device.
Smart Images
Figure CN224087627U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrode repair technical field more specifically, relate to a kind of electrode rod straightening device. BACKGROUND
[0002] Servo welding tongs are widely used in welding workshop for spot welding, and the welding tongs can conduct welding current during spot welding. Through its good conductivity, the current generated by resistance welding machine is transmitted to the welding position, so that the workpiece contact part is rapidly heated due to resistance heat, reaching the required welding temperature, and finally realizing welding, which is the key equipment for completing resistance welding. In the automatic line resistance welding tongs, the electrode rod mainly has two important functions. One is to conduct current, and the electrode rod has good conductivity, which can transmit the current generated by the welding power supply from the welding machine to the electrode cap. For example, when welding the body of an automobile on the production line, a large amount of welding current is transmitted by the electrode rod to ensure that there is enough energy for welding metal parts. The second is to connect and fix the electrode cap, and the electrode cap is the part that directly contacts the welding part. The electrode rod provides mechanical support for the electrode cap and ensures that the electrode cap can be accurately positioned at the welding position. Moreover, the electrode cap can be easily replaced after wear, and the electrode rod can continue to be used. During welding, the electrode rod has certain requirements for accuracy: when the electrode rod is installed, the coaxiality and perpendicularity between the electrode rod, the electrode cap and the welding part need to be ensured. Generally, the coaxiality is required to be within ±0.1mm, and the perpendicularity deviation is not more than ±0.5°. In this way, the current can be uniformly distributed to prevent the electrode cap from being worn and the welding quality problem. If the electrode rod is deformed, it will cause welding quality problems such as welding point distortion, deformation, virtual welding, pinhole and offset. In actual use, the electrode rod is easy to bend due to collision and other reasons, which will affect the subsequent welding operation. In order to improve the utilization efficiency of the electrode rod and reduce the use cost of the electrode rod, it is necessary to correct the electrode rod that has been bent. Therefore, a special device is needed to correct the electrode rod. SUMMARY
[0003] To solve the above technical problems, the utility model provides a kind of electrode rod straightening device, can be by the way of straightening of the bending part of electrode rod to electrode rod is corrected, structure is simple and reliable, it is easy and fast to operate, improves the utilization efficiency of electrode rod under the premise of ensuring that electrode rod meets the requirements, reduces the use cost of electrode rod.
[0004] To solve the above technical problems, the utility model provides a kind of electrode rod straightening device, including shell, the installation hole for installing electrode rod is opened in the shell, the straightening cam is rotatably installed in the shell, the straightening cam is arranged on the side above the installation hole, and the horizontal distance between the axis of the installation hole and the rotation center of the straightening cam is between the maximum value and the minimum value of the radial direction of the straightening cam.
[0005] In this technical solution, the outer casing is used to maintain the external shape of the device and the relative positions of the various components. Mounting holes are provided inside the casing for mounting and fixing the electrode rod, ensuring that the position of the electrode rod remains fixed during the correction process and that changes in the electrode rod's position do not affect the correction effect. A correction cam is rotatably mounted inside the casing. The correction cam has different radial diameters in different directions, resulting in different distances between the correction cam and the electrode rod at different rotation angles. When the outer wall of the correction cam abuts against the outer wall of the electrode rod, if the correction cam continues to rotate towards the side with the larger radial diameter, the correction cam pushes the electrode rod away from the correction cam, causing the electrode rod to bend in that direction, thereby achieving the correction function. During this process, the radial diameter of the correction cam gradually increases, and the correction of the electrode rod is also a gradual process of pushing it back to its original position, avoiding excessive deformation of the electrode rod in a short period of time, which could lead to breakage. The shortest horizontal distance from the mounting hole to the rotation center of the straightening cam lies between the maximum and minimum values of the straightening cam's radial radius. When the minimum radial radius of the straightening cam faces the mounting hole, the straightening cam will not contact the electrode rod located within the mounting hole. In this case, the straightening cam will not affect the installation, removal, or movement of the electrode rod, ensuring the ease of installation, removal, and movement of the electrode rod. Simultaneously, the shortest horizontal distance from the mounting hole to the rotation center of the straightening cam is less than the maximum radial radius of the straightening cam, ensuring that there is an area where the straightening cam can contact the electrode rod during rotation, thus ensuring the achievement of the straightening effect.
[0006] Preferably, a mounting block is detachably installed inside the housing, and the mounting hole is provided on the mounting block.
[0007] Preferably, the axis of the mounting hole is parallel to and not collinear with the vertical central axis of the mounting block.
[0008] Preferably, the mounting block is provided with a first threaded hole, the first threaded hole communicates with the mounting hole, and a first fastener is threadedly connected in the first threaded hole.
[0009] Preferably, the outer casing is provided with a first through groove, and the first fastener is threadedly connected to the first threaded hole and exposed in the first through groove.
[0010] Preferably, the housing is further provided with a sliding groove structure, which is slidably connected to the mounting block, and the sliding groove structure is further provided with a second fastener for fixing the position of the mounting block.
[0011] Preferably, the bottom of the groove structure is provided with a second through groove, the second through groove penetrates the outer shell, the surface of the mounting block is provided with a second threaded hole, the second fastener passes through the second through groove and is threadedly connected to the second threaded hole, and the end of the second fastener away from the mounting block is provided with an abutment, the abutment abuts against the outer surface of the outer shell.
[0012] Preferably, the outer peripheral surface of the correcting cam is the correcting face, which is an inwardly concave arc-shaped surface.
[0013] Preferably, the end of the corrective cam protrudes from the surface of the housing and forms a drive structure.
[0014] Preferably, the housing includes a first side plate and a second side plate, the first side plate and the second side plate are detachably connected, the two ends of the correction cam are rotatably connected to the first side plate and the second side plate respectively, and the mounting hole is disposed between the first side plate and the second side plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are: by using the different radial directions of the correction cam in different directions, the electrode rod located in a fixed position is pushed back to its original position to achieve correction, and the correction process is completed gradually, avoiding the electrode rod from breaking due to excessive deformation in a short period of time. The shortest horizontal distance between the mounting hole and the rotation center of the correction cam is between the maximum and minimum values of the radial direction of the correction cam, thus ensuring the realization of the electrode rod correction function and the convenience of loading, unloading or moving the electrode rod. Attached Figure Description
[0016] Figure 1 This is a perspective view of the electrode rod correction device of this utility model;
[0017] Figure 2 This is an exploded view of the electrode rod straightening device of this utility model;
[0018] Figure 3 This is a perspective view of the mounting block in the electrode rod correction device of this utility model;
[0019] Figure 4 This is a perspective view of the correction cam in the electrode rod correction device of this utility model.
[0020] In the attached figures: 1. Housing; 2. Correcting cam; 3. Mounting hole; 4. Mounting block; 11. First side plate; 12. Second side plate; 13. First through groove; 14. Slide structure; 15. Second through groove; 21. Drive structure; 22. Correcting part; 41. First threaded hole; 42. First fastener; 43. Second threaded hole; 44. Second fastener. Detailed Implementation
[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:
[0024] Example 1
[0025] like Figure 1 , Figure 2As shown, an electrode rod straightening device includes a housing 1. A mounting hole 3 for mounting an electrode rod 5 is provided inside the housing 1. A straightening cam 2 is rotatably mounted inside the housing 1, positioned slightly above and to the side of the mounting hole 3. The shortest horizontal distance between the mounting hole 3 and the rotation center of the straightening cam 2 lies between the maximum and minimum values of the radial distance of the straightening cam 2. The housing 1 maintains the external shape of the device and the relative positions of its components. The mounting hole 3 inside the housing 1 is used to mount and fix the electrode rod 5, ensuring that the position of the electrode rod 5 remains fixed during the straightening process and that changes in the position of the electrode rod 5 do not affect the straightening effect. A corrective cam 2 is rotatably mounted inside the outer casing 1. The corrective cam 2 has different radial directions, resulting in different distances between the corrective cam 2 and the electrode rod 5 when the cam 2 rotates at different angles. When the outer wall of the corrective cam 2 abuts against the outer wall of the electrode rod 5, if the corrective cam 2 continues to rotate towards the side with the larger radial direction, the corrective cam 2 will push the electrode rod 5 away from the corrective cam 2, causing the electrode rod 5 to bend in that direction, thereby achieving the corrective function. During this process, the radial direction of the corrective cam 2 gradually increases, and the correction of the electrode rod 5 is also a gradual process of pushing it back to its original position, avoiding excessive deformation of the electrode rod 5 in a short period of time, which could lead to breakage of the electrode rod 5. The shortest horizontal distance from the mounting hole 3 to the rotation center of the straightening cam 2 lies between the maximum and minimum values of the radial distance of the straightening cam 2. When the minimum radial distance of the straightening cam 2 faces the mounting hole 3, the straightening cam 2 will not contact the electrode rod 5 located inside the mounting hole 3. At this time, the straightening cam 2 will not affect the loading, unloading, and movement of the electrode rod 5, ensuring the convenience of loading, unloading, and movement of the electrode rod 5. At the same time, the shortest horizontal distance from the mounting hole 3 to the rotation center of the straightening cam 2 is less than the maximum radial distance of the straightening cam 2, ensuring that there is an area that can abut against the electrode rod 5 during the rotation of the straightening cam 2, ensuring that the straightening effect can be achieved. In use, the operator first drives the straightening cam 2 to rotate so that the point of minimum radial distance on the straightening cam 2 faces the mounting hole 3, and then inserts the electrode rod 5 to be straightened into the mounting hole 3, causing the bent part of the electrode rod 5 to rotate against the straightening cam 2. Then, the operator drives the correction unit 22 to rotate in the direction of increasing diameter. As the diameter increases, the correction cam 2 comes into contact with the electrode rod 5 and pushes the electrode rod 5 away from the correction cam 2. When the electrode rod 5 is pushed back to a straight state, the operator drives the correction cam 2 to rotate in the opposite direction until there is enough space between the electrode rod 5 and the correction cam 2. Then the operator removes the electrode rod 5 to complete the correction operation.
[0026] like Figure 2As shown, a mounting block 4 is detachably installed inside the outer casing 1, and mounting holes 3 are provided on the mounting block 4. To ensure that the mounting holes 3 can securely fix the electrode rod 5, the mounting holes 3 need to be designed according to the electrode rod 5. Different electrode rods 5 have different specifications, therefore, mounting holes 3 of different specifications need to be provided. By setting the mounting holes 3 on the mounting block 4, which is detachably installed inside the outer casing 1, when dealing with electrode rods of different specifications, only the mounting block 4 needs to be replaced, enhancing the versatility of the device.
[0027] like Figure 3 As shown, the axis of mounting hole 3 is parallel to but not collinear with the vertical central axis of mounting block 4. This arrangement causes mounting hole 3 to deviate from the center of mounting block 4, achieving an eccentric effect. When mounting block 4 is installed in different directions, the eccentric design of mounting hole 3 on mounting block 4 results in different distances between mounting hole 4 and straightening cam 2, thus giving straightening cam 2 different straightening ranges.
[0028] Example 2
[0029] This embodiment is similar to Embodiment 1 above, except that, as Figure 2 , 3 As shown, the mounting block 4 is provided with a first threaded hole 41, which connects to the mounting hole 3. A first fastener 42 is threaded into the first threaded hole 41. When the electrode rod 5 is inserted into the mounting hole 3, the mounting hole 3 can only fix the position of the electrode rod 5 and prevent it from changing. During correction, the electrode rod 5 may rotate under force. Therefore, the first threaded hole 41 and the first fastener 42 are provided. The threaded connection between the first fastener 42 and the first threaded hole 41 provides support for the first fastener 42, making it difficult for the first fastener 42 to slip out of the first threaded hole 41. The first fastener 42 can be inserted into the mounting hole 3 through the first threaded hole 41 and abuts against the electrode rod 5 located in the mounting hole 3 to clamp it. The friction between the first fastener 42 and the electrode rod 5 restricts the rotation of the electrode rod 5. When it is necessary to replace the electrode rod 5, simply loosen the first fastener 42.
[0030] like Figure 1 As shown, the outer casing 1 is provided with a first through groove 13, and the first fastener 42 is threadedly connected to the first threaded hole 41 and exposed in the first through groove 13. The first fastener 42 can be directly inserted into the mounting block 4 located inside the outer casing 1 from the outside through the first through groove 12, so that when clamping or loosening the electrode rod 5, it can be operated directly at the tail end without having to remove the mounting block 4.
[0031] like Figure 2As shown, the outer casing 1 also has a sliding groove structure 14 inside, which is slidably connected to the mounting block 4. The sliding groove structure 14 also has a second fastener 44 for fixing the position of the mounting block 4. By providing the sliding groove structure 14, the position of the mounting block 4 can be changed by sliding it on the sliding groove structure 14 during correction. This allows the mounting holes 3 on the mounting block 4 to accommodate electrode rods 5 of different lengths and adjust the correction positions of the same type of electrode rod 5. The second fastener 44 on the sliding groove structure 14 is used to fix the mounting block 4 and prevent it from accidentally sliding during correction.
[0032] like Figure 2 As shown, the bottom of the sliding groove structure 14 has a second through groove 15 that penetrates the outer shell 1. The surface of the mounting block 4 has a second threaded hole 43. The second fastener 44 passes through the second through groove 15 and is threadedly connected to the second threaded hole 43. The end of the second fastener 44 furthest from the mounting block 4 has an abutment that abuts against the outer surface of the outer shell 1. The second through groove 15 allows the second fastening bolt 44 to pass through the outer shell 1 and directly connect to the second threaded hole 43 on the mounting block 4 located inside the outer shell 1. When the second fastener 44 is tightened, the abutment of the second fastener 44 and the mounting block 4 are clamped together on the inner and outer sides of the outer shell 1, generating friction between them, thus fixing the position of the mounting block 4. When it is necessary to move the mounting block 4, simply loosen the second fastener 44.
[0033] Example 3
[0034] This embodiment is similar to Embodiment 1 above, except that, as Figure 4 As shown, the outer peripheral surface of the straightening cam 2 is the straightening face 22, which is an inwardly concave arc-shaped surface. During straightening, the electrode rod 5 can be inserted into the straightening face 22 to ensure that the electrode rod 5 will not accidentally slip out during the straightening process.
[0035] like Figure 1 , 4 As shown, the end of the straightening cam 2 protrudes from the surface of the outer shell 1 to form a drive structure 21. The drive structure 21 is a regular hexagonal prism structure. The regular hexagonal prism structure is a common bolt structure, and a typical workshop has an Allen wrench. During straightening, the worker can directly engage the Allen wrench with the drive structure 21 and directly rotate the straightening cam 2 by moving the wrench.
[0036] like Figure 2As shown, the outer casing 1 includes a first side plate 11 and a second side plate 12, which are detachably connected. The two ends of the straightening cam 2 are rotatably connected to the first side plate 11 and the second side plate 12, respectively. A mounting hole 3 is located between the first side plate 11 and the second side plate 12. The detachable connection of the first side plate 11 and the second side plate 12 allows operators to inspect, adjust, and replace internal components during use.
[0037] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An electrode rod correction device, characterized in that, Includes a housing (1), in which a mounting hole (3) for mounting an electrode rod (5) is provided, and a correction cam (2) is rotatably mounted in the housing (1). The correction cam (2) is located above the side of the mounting hole (3), and the shortest horizontal distance between the mounting hole (3) and the rotation center of the correction cam (2) is between the maximum and minimum values of the radial distance of the correction cam (2).
2. The electrode rod correction device according to claim 1, characterized in that, An installation block (4) is detachably installed inside the outer casing (1), and the installation hole (3) is provided on the installation block (4).
3. The electrode rod correction device according to claim 2, characterized in that, The axis of the mounting hole (3) is parallel to and not collinear with the vertical central axis of the mounting block (4).
4. The electrode rod correction device according to claim 2, characterized in that, The mounting block (4) is provided with a first threaded hole (41), which is connected to the mounting hole (3), and a first fastener (42) is threaded into the first threaded hole (41).
5. The electrode rod correction device according to claim 4, characterized in that, The outer casing (1) is provided with a first through groove (13), and the first fastener (42) is threadedly connected to the first threaded hole (41) and exposed in the first through groove (13).
6. The electrode rod correction device according to claim 2, characterized in that, The outer shell (1) is also provided with a sliding groove structure (14), which is slidably connected to the mounting block (4). The sliding groove structure (14) is also provided with a second fastener (44) for fixing the position of the mounting block (4).
7. The electrode rod correction device according to claim 6, characterized in that, The bottom of the groove structure (14) is provided with a second through groove (15), which penetrates the outer shell (1). The surface of the mounting block (4) is provided with a second threaded hole (43). The second fastener (44) passes through the second through groove (15) and is threadedly connected to the second threaded hole (43). The end of the second fastener (44) away from the mounting block (4) is provided with an abutment, which abuts against the outer surface of the outer shell (1).
8. The electrode rod correction device according to claim 1, characterized in that, The outer peripheral surface of the correction cam (2) is the correction face (22), which is an inwardly concave arc-shaped surface.
9. The electrode rod correction device according to claim 1, characterized in that, The end of the correction cam (2) protrudes from the surface of the housing (1) and forms a drive structure (21).
10. The electrode rod correction device according to claim 1, characterized in that, The outer casing (1) includes a first side plate (11) and a second side plate (12), the first side plate (11) and the second side plate (12) are detachably connected, the two ends of the correction cam (2) are rotatably connected to the first side plate (11) and the second side plate (12) respectively, and the mounting hole (3) is provided between the first side plate (11) and the second side plate (12).