Welding gun capable of automatically calibrating perpendicularity
By automatically calibrating the verticality of the welding torch, the ring plate is made to fit tightly against the plate, driving the adjustment mechanism to rotate. This solves the problem of maintaining the verticality of the welding torch, achieving stable welding quality and reducing the labor intensity of operators.
Patent Information
- Application Number
- CN202520610193.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing welding torches are difficult to keep perpendicular to the plate, resulting in unstable welding quality and high labor intensity during long-term operation.
An automatic verticality calibration welding torch was designed. The torch is in close contact with the plate through an annular plate, which drives the adjustment mechanism to rotate and displays the angle change between the torch head and the plate. This helps the operator to adjust the angle in real time and maintain the same welding angle.
It improved welding quality, reduced the labor intensity of workers, ensured consistent overall weld strength, and reduced angle measurement errors.
Smart Images
Figure CN223932929U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ship hull plate welding technology, specifically to an automatic verticality calibrating welding torch. Background Technology
[0002] In modern shipbuilding, steel plates and other sheet metal require welding and other processes according to design drawings to ensure that the size and shape of the plates meet the needs of on-site ship construction and installation. Welding of sheet metal is typically performed using AC / DC welding machines. The output characteristics are changed by adjusting the reactor (or electronic control circuit), stabilizing the arc, and adjusting the welding current. This stable arc, combined with the welding torch and the operator's precise positioning, allows for welding of the sheet metal. However, in actual operation, the perpendicularity of the welding torch to the sheet metal directly affects the welding quality. Different perpendicularity welding angles result in varying weld strengths. During prolonged spot welding operations, it is difficult to maintain the same level of perpendicularity between the welding torch and the sheet metal, and existing welding torches cannot directly demonstrate the precise angle between them.
[0003] Therefore, this application designs an automatic verticality calibrating welding torch that can automatically measure and display the angle between the plate and the welding torch in real time to assist operators in judging the angle. Utility Model Content
[0004] The purpose of this invention is to provide an automatic verticality calibrating welding torch, which aims to solve the aforementioned problems.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic verticality calibrating welding torch, comprising a connecting cylinder, a vertical cylinder, a torch head, and an adjustment mechanism for real-time response to the verticality of the welding torch to the plate; the connecting cylinder is detachably connected to an AC / DC welding machine via a connecting pipe, the vertical cylinder is vertically inserted into and connected to the end of the connecting cylinder away from the connecting pipe, the lower part of the vertical cylinder is fixedly connected to the torch head, the connecting pipe passes through the vertical cylinder and is inserted into the torch head, and the adjustment mechanism is located on both sides of the vertical cylinder;
[0006] The lower end of the adjustment mechanism is rotatably equipped with an annular plate, which is positioned on the lower periphery of the gun head. The annular plate is rotatably connected to the gun head through a connecting rod. The annular plate rotates relative to the gun head by being tightly attached to the plate to be welded, thereby driving the adjustment mechanism to rotate and displaying the change in the perpendicularity of the gun head relative to the plate.
[0007] The annular plate, when in close contact with the plate during spot welding, rotates relative to the welding torch head, driving the adjustment mechanism to rotate. This indicates the angle between the torch head and the annular plate, assisting the operator in judging the angle between the torch head and the plate. This allows the operator to make real-time angle adjustments and maintain the same angle during spot welding, resulting in a more uniform weld strength throughout the weld. This effectively improves the welding quality of plate welding and reduces the labor intensity of the operators to some extent.
[0008] Furthermore, the connecting cylinder is equipped with a handle for easy gripping. The annular plate has bridges on both sides that are higher than the annular plate. The adjusting mechanism is rotatably connected to the annular plate at the bridges. The lower end of the connecting rod is fixedly connected to both ends of the upper part of the annular plate, and the middle part of the connecting rod is rotatably connected to the gun head with a limit.
[0009] By setting a bridge higher than the annular plate, the weld seam generated during spot welding is located below the bridge, without affecting the tightness of the annular plate against the plate, avoiding errors in angle measurement, and further improving the device's measurement accuracy of the gun head angle.
[0010] Furthermore, the adjustment mechanism includes a housing, a rack, a shank gear, a rotating rod, a scale handle, and a support assembly; two sets of housings are fixedly installed at both ends of the vertical cylinder, and through slots are opened at both ends of the vertical cylinder; the lower end of the rack is hinged to an annular plate, the rotating rod is rotatably connected to the inner wall of the vertical cylinder, the shank gear is inserted into the middle of the rotating rod, and the end of the rotating rod away from the inner wall of the vertical cylinder extends to the outside of the vertical cylinder and is inserted into the scale handle; the two sides of the shank gear pass through the through slots, and the two sets of racks mesh with the two sides of the shank gear in the area inside the housing; the racks are connected to the inner wall of the housing through the support assembly.
[0011] Furthermore, the support assembly includes a support sleeve and a spring telescopic tube; the support sleeve has a limited sliding connection with the toothless side of the toothed rod, one end of the spring telescopic tube is fixedly inserted into the inner wall of the outer shell, and the other end of the spring telescopic tube is hinged to the rear of the support sleeve. A comparison ring is fixedly installed on the outside of the vertical cylinder, the comparison ring is concentric with the scale handle, and both the scale handle and the comparison ring have scale grooves on their surfaces.
[0012] Compared with existing technologies, it has the following beneficial effects:
[0013] This invention provides an automatic verticality calibration welding torch. During spot welding, a ring-shaped plate is in close contact with the plate, causing rotation relative to the torch head. This rotation drives an adjustment mechanism to measure the angle between the torch head and the ring-shaped plate, assisting the operator in judging the angle between the torch head and the plate. This allows for real-time angle adjustments and maintains the same angle during spot welding, resulting in consistent weld strength across the entire weld seam. This effectively improves the welding quality of plate welding and reduces the workload of operators to some extent. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of an automatic verticality calibration welding torch according to the present invention.
[0015] Figure 2 This is a partial structural diagram of an automatic verticality calibration welding torch according to the present invention.
[0016] Figure 3 This is a schematic diagram of an annular plate for automatically calibrating the verticality of a welding torch according to the present invention.
[0017] Figure 4 This is a cross-sectional schematic diagram of an automatic verticality calibration welding torch according to the present invention.
[0018] Figure 5 This is a schematic diagram of a support component for an automatic verticality calibrating welding torch according to the present invention.
[0019] In the diagram: 1-Connecting cylinder; 11-Handle piece; 2-Vertical cylinder; 21-Through groove; 22-Comparison ring; 3-Gun head; 4-Adjusting mechanism; 41-Outer shell; 42-Rack rack; 43-Stalk gear; 44-Rotating rod; 45-Scale handle; 46-Support assembly; 461-Support sleeve; 462-Spring telescopic tube; 5-Connecting tube; 6-AC / DC welding machine; 7-Annular plate; 71-Bridge; 8-Connecting rod. Detailed Implementation
[0020] 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.
[0021] Please see Figures 1 to 5 As shown, this utility model provides the following technical solution: an automatic verticality calibration welding gun, including a connecting cylinder 1, a vertical cylinder 2, a gun head 3, and an adjustment mechanism 4 that reacts in real time to the verticality of the welding gun and the plate; the connecting cylinder 1 is detachably connected to an AC / DC welding machine 6 through a connecting pipe 5, the vertical cylinder 2 is vertically inserted into and connected to the end of the connecting cylinder 1 away from the connecting pipe 5, the lower part of the vertical cylinder 2 is fixedly connected to the gun head 3, the connecting pipe 5 passes through the vertical cylinder 2 and is inserted into the gun head 3, and the adjustment mechanism 4 is provided on both sides of the vertical cylinder 2;
[0022] The lower end of the adjustment mechanism 4 is rotatably provided with an annular plate 7, which is positioned on the lower periphery of the gun head 3. The annular plate 7 is rotatably connected to the gun head 3 through the connecting rod 8. The annular plate 7 rotates relative to the gun head 3 by being tightly attached to the plate to be welded, thereby driving the adjustment mechanism 4 to rotate and displaying the change in the perpendicularity of the gun head 3 relative to the plate.
[0023] See Figure 2 The connecting cylinder 1 has a handle 11 on its side for easy gripping by personnel. The operator can perform welding operations by holding the handle 11, which makes it easier to operate and observe the feedback of the adjustment mechanism 4 on angle changes.
[0024] As another embodiment, such as Figures 2 to 4 As shown, the annular plate 7 has a corridor bridge 71 on both sides that is higher than the annular plate 7. The adjustment mechanism 4 is rotatably connected to the annular plate 7 at the corridor bridge 71. The lower end of the connecting rod 8 is fixedly connected to the upper two ends of the annular plate 7 respectively. The middle part of the connecting rod 8 is rotatably connected to the gun head 3 with a limit.
[0025] The height of the corridor bridge 71 is higher than the height of the annular piece 7, so that when spot welding is performed, as the welding gun moves, the weld can be located at the lower end of the corridor bridge 71, so that the annular piece 7 does not come into contact with the weld, thus ensuring that the annular piece 7 always fits the plate and avoids the influence of the weld on the annular piece 7 and thus avoids disturbance to the adjustment mechanism 4.
[0026] When welding the sheet metal, the operator holds the handle 11 and places the annular plate 7 against the sheet metal. Then, the operator rotates the connecting cylinder 1, which drives the vertical cylinder 2 and the gun head 3 to rotate synchronously. This causes the gun head 3 and the annular plate 7 to rotate relative to each other, which in turn causes the adjusting mechanism 4 to rotate accordingly.
[0027] It should be noted that the rotating connection between the connecting rod 8 and the gun head 3 has a certain degree of damping to prevent the annular plate 7 from rotating excessively.
[0028] See Figure 3 as well as Figure 4 The adjustment mechanism 4 includes a housing 41, a rack 42, a shank gear 43, a rotating rod 44, a scale handle 45, and a support assembly 46. The two housings 41 are fixedly installed at both ends of the vertical cylinder 2, and through slots 21 are provided at both ends of the vertical cylinder 2. The lower end of the rack 42 is hinged to the annular plate 7, the rotating rod 44 is rotatably connected to the inner wall of the vertical cylinder 2, the shank gear 43 is inserted into the middle of the rotating rod 44, and the end of the rotating rod 44 away from the inner wall of the vertical cylinder 2 extends to the outside of the vertical cylinder 2 and is inserted into the scale handle 45.
[0029] The lower end of the toothed rod 42 is hinged to the annular plate 7 with a certain damping. The upper part of the toothed rod 42 has evenly arranged teeth on the inner side. The through grooves 21 on both sides of the vertical cylinder 2 make the vertical cylinder 2 communicate with the inside of the outer shell 41. The lower opening of the outer shell 41 allows the toothed rod 42 to enter the inside of the outer shell 41.
[0030] When the gun head 3 rotates relative to the annular plate 7, the toothed rods 42 on both sides of the annular plate 7 rotate and are displaced relative to the outer shell 41 under the support of the support assembly 46. One toothed rod 42 moves upward and the other toothed rod 42 moves downward. Through the meshing of the toothed rod 42 with the shank gear 43, the toothed rod 42 drives the shank gear 43 to rotate. The rotation of the shank gear 43 drives the rotating rod 44 to rotate, which in turn drives the scale handle 45 outside the vertical cylinder 2 to rotate.
[0031] See Figure 4 The shank gear 43 passes through the through groove 21 on both sides, and the two sets of racks 42 mesh with the shank gear 43 in the area inside the housing 41. The racks 42 are connected to the inner wall of the housing 41 by the support assembly 46.
[0032] It should be noted that since the shank gear 43 is provided with racks 42 on both sides, when the annular plate 7 is subjected to vertical force or gravity, the racks 42 on both sides cannot move in the same vertical direction at the same time due to their meshing relationship with the shank gear 43. With the support component 46 limiting the racks 42, the racks 42 cannot be disengaged from the device.
[0033] As another embodiment, such as 2 and Figure 5 As shown, the support assembly 46 includes a support sleeve 461 and a spring telescopic tube 462; the support sleeve 461 has a limited sliding connection with the toothless side of the toothed rod 42, one end of the spring telescopic tube 462 is fixedly inserted into the inner wall of the outer shell 41, and the other end of the spring telescopic tube 462 is hinged to the rear of the support sleeve 461.
[0034] The sliding connection between the support sleeve 461 and the toothed rod 42 is provided with a slide rail and a slide groove and is equipped with a limit to prevent the support sleeve 461 from separating from the toothed rod 42. At the same time, the hinge between the support sleeve 461 and the spring telescopic tube 462 is provided with a certain damping.
[0035] When the rack 42 is driven to rotate, its upper end makes a certain degree of arc motion. Through the rotatable support sleeve 461, the rack 42 is given a certain support by the spring telescopic tube 462 while adapting to its arc motion, so that the support sleeve 461 and the rack 42 rotate synchronously. At the same time, the rack 42 rotates along the drive shank gear 43 that slides along the support sleeve 461.
[0036] See Figure 2 A comparison ring 22 is fixedly installed on the outside of the vertical cylinder 2. The comparison ring 22 is concentric with the scale handle 45. The scale handle 45 and the comparison ring 22 are both provided with scale grooves.
[0037] Since the comparison ring 22 is fixedly connected to the vertical cylinder 2, the comparison ring 22 will not rotate. When the scale handle 45 rotates, the deflection angle of the gun head 3 relative to the plate can be determined by the correspondence between its scale groove and the scale groove of the comparison ring 22. This makes it easier for operators to judge the verticality and perform welding operations at a fixed deflection during the operation.
[0038] Working principle: When in use, start the AC / DC welding machine 6 and set the specific welding parameters. Then, the operator holds the handle 11 and puts the annular plate 7 against the plate. Then, rotate the connecting cylinder 1, which drives the vertical cylinder 2 and the torch head 3 to rotate synchronously. This causes the torch head 3 and the annular plate 7 to rotate relative to each other. This causes the toothed rods 42 on both sides of the annular plate 7 to rotate and move relative to the outer shell 41 under the support of the support assembly 46. This drives the shank gear 43 to rotate. The rotation of the shank gear 43 drives the scale handle 45 to rotate. By the correspondence between its scale groove and the scale groove of the comparison ring 22, the deflection angle of the torch head 3 relative to the plate can be determined, thereby controlling the deflection angle between the torch head 3 and the plate throughout the welding operation.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic verticality calibration welding torch, characterized in that... The welding gun includes a connecting cylinder (1), a vertical cylinder (2), a welding gun head (3), and an adjustment mechanism (4) that reacts in real time to the perpendicularity of the welding gun to the plate. The connecting cylinder (1) is detachably connected to an AC / DC welding machine (6) through a connecting pipe (5). The vertical cylinder (2) is vertically inserted into and connected to the end of the connecting cylinder (1) away from the connecting pipe (5). The lower part of the vertical cylinder (2) is fixedly connected to the welding gun head (3). The connecting pipe (5) passes through the vertical cylinder (2) and is inserted into the welding gun head (3). The adjustment mechanism (4) is located on both sides of the vertical cylinder (2). The lower end of the adjustment mechanism (4) is rotatably provided with an annular plate (7). The annular plate (7) is positioned on the lower periphery of the gun head (3). The annular plate (7) is rotatably connected to the gun head (3) through a connecting rod (8). The annular plate (7) is in close contact with the plate to be welded, thereby generating rotation relative to the gun head (3), which in turn drives the adjustment mechanism (4) to rotate and displays the change in the perpendicularity of the gun head (3) relative to the plate.
2. The automatic verticality calibration welding torch according to claim 1, characterized in that, The connecting cylinder (1) is provided with a handle (11) on its side for easy gripping by personnel.
3. The automatic verticality calibration welding torch according to claim 1, characterized in that, The annular plate (7) has a corridor (71) on both sides that is higher than the annular plate (7). The adjustment mechanism (4) is rotatably connected to the annular plate (7) at the corridor (71). The lower end of the connecting rod (8) is fixedly connected to the upper two ends of the annular plate (7). The middle part of the connecting rod (8) is rotatably connected to the gun head (3) with a limit.
4. The automatic verticality calibration welding torch according to claim 3, characterized in that, The adjustment mechanism (4) includes a housing (41), a rack (42), a shank gear (43), a rotating rod (44), a scale handle (45), and a support assembly (46); two sets of housings (41) are fixedly installed at both ends of the vertical cylinder (2), and through slots (21) are provided at both ends of the vertical cylinder (2); the lower end of the rack (42) is hinged to the annular plate (7), the rotating rod (44) is rotatably connected to the inner wall of the vertical cylinder (2), the shank gear (43) is inserted into the middle of the rotating rod (44), and one end of the rotating rod (44) away from the inner wall of the vertical cylinder (2) extends to the outside of the vertical cylinder (2) and is inserted into the scale handle (45).
5. The automatic verticality calibration welding torch according to claim 4, characterized in that, The shank gear (43) passes through the through groove (21) on both sides, and the two sets of racks (42) mesh with the shank gear (43) in the area inside the housing (41) on both sides. The racks (42) are connected to the inner wall of the housing (41) through the support assembly (46).
6. The automatic verticality calibration welding torch according to claim 4, characterized in that, The support assembly (46) includes a support sleeve (461) and a spring telescopic tube (462); the support sleeve (461) has a limited sliding connection with the toothless side of the toothed rod (42), one end of the spring telescopic tube (462) is fixedly inserted into the inner wall of the outer shell (41), and the other end of the spring telescopic tube (462) is hinged to the rear of the support sleeve (461).
7. The automatic verticality calibration welding torch according to claim 4, characterized in that, A comparison ring (22) is fixedly provided on the outside of the vertical cylinder (2). The comparison ring (22) is concentric with the scale handle (45). Both the scale handle (45) and the comparison ring (22) have scale grooves on their surfaces.