Metal-clad cable argon arc welding apparatus

Abstract

The application discloses a metal sheath cable argon arc welding device, a pay-off rack, a tape pay-off rack, a welding machine, a caterpillar tractor and a take-up rack, the welding machine comprising a longitudinal wrapping forming assembly for allowing the metal sheath to pass through and be formed and a welding gun for welding the metal sheath wrapping a core into a tubular shape, the welding machine being further provided with a controller, a welding gun adjusting mechanism and a camera for capturing the gap position of the longitudinally-wrapped and formed metal sheath, the welding gun being installed on the welding machine through the welding gun adjusting mechanism so that the nozzle of the welding gun is circumferentially rotated around the tubular metal sheath through the welding gun adjusting mechanism to adjust the nozzle of the welding gun to face the gap position of the longitudinally-wrapped and formed metal sheath. The application can realize automatic following of the nozzle of the welding gun to the gap position of the metal sheath, realize real-time adjustment of the nozzle of the welding gun in an intelligent manner, ensure welding quality and wrapping performance of the metal sheath.

Description

Technical Field

[0001] This invention relates to the field of automated processing and forming equipment technology, and in particular to an argon arc welding device for metal sheathed cables. Background Technology

[0002] To enhance the cable's protective capabilities, a metal sheath can be wrapped around the core. The metal sheath is formed into a tubular shape through longitudinal wrapping and the gaps in the metal sheath are welded using methods such as argon arc welding to ensure the sheath's wrapping performance.

[0003] Although existing welded metal-sheathed cables are pulled by a tracked traction machine, the longitudinally wrapped metal-sheathed cable may deflect under the action of the take-up frame. This may cause the nozzle of the welding gun to be misaligned with the gap of the longitudinally wrapped metal sheath when welding the gap with the welding gun. This deviation results in poor welding effect and affects the wrapping performance of the metal sheath. Summary of the Invention

[0004] To address the above shortcomings, this invention provides an argon arc welding device for metal-sheathed cables, which can solve the problem of poor welding results caused by misalignment of the welding torch nozzle and the gap due to the deflection of the metal-sheathed cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An argon arc welding device for metal-sheathed cables includes a wire feeding frame, a tape feeding frame, a welding machine, a tracked traction machine, and a take-up frame. The welding machine includes a longitudinally wrapped forming assembly for passing through and forming the metal sheath, and a welding torch for welding the metal sheath covering the wire core into a tubular shape. The welding machine is also equipped with a controller, a welding torch adjustment mechanism, and a camera for grasping the gap position of the longitudinally wrapped metal sheath. The welding torch is mounted on the welding machine via the welding torch adjustment mechanism so that the nozzle of the welding torch can rotate circumferentially around the tubular metal sheath to adjust the nozzle orientation towards the gap position of the longitudinally wrapped metal sheath.

[0007] Furthermore, the welding torch adjustment mechanism includes a servo motor, the extension direction of the output shaft of the servo motor is consistent with the extension direction of the tubular metal sheath, and the welding torch is mounted on the end of the output shaft of the servo motor.

[0008] Furthermore, the welding torch adjustment mechanism includes a mounting platform and a three-axis motion mechanism that drives the mounting platform to extend along the X, Y, and Z axes.

[0009] Furthermore, the longitudinal wrapping forming assembly includes an edge-gathering mechanism, a rounding mechanism, a longitudinal wrapping arc-forming mechanism, and a longitudinal wrapping forming mechanism arranged in sequence.

[0010] Furthermore, a wire core guiding mechanism is provided in front of the longitudinal arc forming mechanism for guiding the wire core into the longitudinal arc forming mechanism.

[0011] Furthermore, a side detection mechanism is provided on the front side of the longitudinally wrapped arc-shaped mechanism. The side detection mechanism is used to detect the side position of the metal sleeve formed into an arc shape by the longitudinally wrapped arc-shaped mechanism. The side detection mechanism is electrically connected to the controller so that when the side detection mechanism detects that the longitudinally wrapped arc-shaped metal sleeve is deflected to one side, the controller controls the welding torch adjustment mechanism to adjust the welding torch to the deflected side so that the nozzle of the welding torch is directed toward the gap position of the longitudinally wrapped metal sleeve.

[0012] Furthermore, the side detection mechanism includes a mounting frame, a spring, and a strain gauge. The spring is mounted on the mounting frame, the strain gauge is mounted in the middle of the spring, the strain gauge is electrically connected to the controller, and the end of the spring abuts against the side of the longitudinally arc-shaped metal sheath.

[0013] Furthermore, the spring has two pieces, and the ends of the two spring pieces respectively abut against the two sides of the longitudinally wrapped arc-shaped metal sheath.

[0014] Furthermore, a roller is provided at the end of the spring piece, and the spring piece abuts against the side of the longitudinally wrapped arc-shaped metal sheath through the roller.

[0015] Furthermore, the welding machine is also equipped with a trimming machine for trimming the two sides of the metal sheath when it is made into a strip structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The argon arc welding device for metal sheathed cables of the present invention uses a camera to capture and identify the gap position of the longitudinally wrapped metal sheath in real time, and transmits the signal to the controller. When the controller determines that the nozzle orientation of the welding torch is inconsistent with the gap position of the metal sheath based on the information identified by the camera, the controller controls the welding torch adjustment mechanism to rotate the nozzle of the welding torch around the tubular metal sheath to adjust the nozzle orientation of the welding torch to the gap position of the longitudinally wrapped metal sheath. This allows the nozzle orientation of the welding torch to follow the gap position of the metal sheath very well, realizing automatic following of the nozzle orientation of the welding torch with the gap position of the metal sheath. This achieves intelligent real-time adjustment of the welding torch nozzle to ensure welding quality and the wrapping performance of the metal sheath. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the argon arc welding device for metal-sheathed cables of the present invention;

[0019] Figure 2 This is a schematic diagram of the main components of the welding machine in this invention;

[0020] Figure 3 This is a schematic diagram of the edge-gathering mechanism in this invention;

[0021] Figure 4 This is a schematic diagram of the pressure circle mechanism in this invention;

[0022] Figure 5 This is a schematic diagram of the longitudinal arc-forming mechanism in this invention;

[0023] Figure 6 This is a schematic diagram of the core guiding mechanism in this invention;

[0024] Figure 7 This is a schematic diagram of the structure of the welding torch, camera, welding torch adjustment mechanism and longitudinal forming mechanism in this invention;

[0025] Figure 8 This is a schematic diagram of the side detection mechanism in this invention.

[0026] The markings shown in the diagram are as follows: 10-Wire feeding frame; 20-Wire feeding frame; 30-Welding machine; 31-Welding torch; 32-Camera; 33-Wire core guiding mechanism; 331-Wire core guiding mechanism mounting frame; 332-Wire core guiding mechanism guide wheel; 34-Edge trimming machine; 35-Height adjustment mechanism; 36-Leveling mechanism; 40-Crawler traction machine; 50-Wire take-up frame; 60-Longitudinal wrapping forming assembly; 61-Edge taking-up mechanism; 611-Edge taking-up mechanism mounting frame; 612-Upper edge taking-up mechanism roller; 613-Lower edge taking-up mechanism roller; 62-Rounding mechanism; 6 21-Pressing rounding mechanism mounting bracket; 622-Upper pressing rounding mechanism roller; 623-Lower pressing rounding mechanism roller; 63-Longitudinal wrapping arc forming mechanism; 631-Longitudinal wrapping arc forming mechanism mounting bracket; 632-Longitudinal wrapping arc forming mechanism mounting bracket; 64-Longitudinal wrapping forming mechanism; 641-Longitudinal wrapping forming mechanism mounting bracket; 642-Longitudinal wrapping forming mechanism sleeve; 70-Welding torch adjustment mechanism; 71-Three-axis motion mechanism; 72-Mounting platform; 73-Servo motor; 80-Roughing machine; 90-Side inspection mechanism; 91-Mounting bracket; 92-Spring; 93-Strain gauge; 94-Roller. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Please refer to Figures 1 to 8 A preferred embodiment of the present invention provides an argon arc welding device for metal-sheathed cables. This device mainly includes a wire-laying frame 10, a tape-laying frame 20, a welding machine 30, a tracked traction machine 40, and a take-up frame 50. The wire-laying frame 10 is used to release the wire core; the tape-laying frame is used to release the metal sheath, which is in strip shape; the welding machine 30 is used to longitudinally wrap the metal sheath and to weld the metal sheath covering the wire core into a tubular shape, forming a metal-sheathed cable; the tracked traction machine 40 is used to pull the welded cable towards the take-up frame 50; and the take-up frame 50 is used to wind and collect the welded cable. In a preferred embodiment, the wire-laying frame 10, tape-laying frame 20, welding machine 30, tracked traction machine 40, and take-up frame 50 are all present, and a corrugating machine 80 is provided between the welding machine 30 and the tracked traction machine 40. The corrugating machine 80 is used to tighten the welded cable.

[0031] The welding machine 30 includes a longitudinal wrapping forming assembly 60 for passing through and forming a metal sheath, and a welding gun 31 for welding the metal sheath covering the wire core into a tubular shape. The metal sheath is longitudinally wrapped and formed by the longitudinal wrapping forming assembly 60, and then the wire core is allowed to enter and welded into a tubular cable by the welding gun 31.

[0032] The welding machine 30 is also equipped with a controller, a welding torch adjustment mechanism 70, and a camera 32 for capturing the gap position of the longitudinally wrapped metal sheath. The controller, welding torch adjustment mechanism 70, and camera 32 are electrically connected. The camera 32 captures and identifies the gap position of the longitudinally wrapped metal sheath and transmits the signal to the controller. The controller may be an industrial computer, PLC controller, etc. The welding torch 31 is mounted on the welding machine 30 via the welding torch adjustment mechanism 70. When the controller determines, based on the information identified by the camera 32, that the nozzle orientation of the welding torch 31 is inconsistent with the gap position of the metal sheath, the controller controls the welding torch adjustment mechanism 70 to rotate the nozzle of the welding torch 31 circumferentially around the tubular metal sheath to adjust the nozzle orientation of the welding torch 31 towards the gap position of the longitudinally wrapped metal sheath.

[0033] In practice, ideally, the cable is pulled by a tracked traction machine 40 and wound and collected by a take-up frame 50. Before welding, the gap of the longitudinally wrapped metal sheath is directly above the cable. However, under the pulling action of the tracked traction machine 40 and the take-up frame 50, the longitudinally wrapped metal sheath cable may deflect (rotate circumferentially). Although the deflection is generally not large, if the nozzle of the welding torch is not aligned with the gap of the longitudinally wrapped metal sheath, it will result in poor welding formation, poor weld effect, and affect the wrapping performance of the metal sheath. At this time, the argon arc welding device for metal-sheathed cables of the present invention uses camera 32 to capture and identify the gap position of the longitudinally wrapped metal sheath in real time, and transmits the signal to the controller. When the controller determines, based on the information identified by camera 32, that the nozzle orientation of welding torch 31 is inconsistent with the gap position of the metal sheath, the controller controls welding torch adjustment mechanism 70 to rotate the nozzle of welding torch 31 circumferentially around the tubular metal sheath to adjust the nozzle orientation of welding torch 31 to the gap position of the longitudinally wrapped metal sheath, so that the nozzle orientation of welding torch 31 follows the gap position of the metal sheath very well. The present invention can realize the automatic following of the nozzle orientation of welding torch 31 with the gap position of metal sheath, thereby realizing an intelligent real-time adjustment of the nozzle of welding torch 31 to ensure welding quality and the wrapping performance of metal sheath.

[0034] In a preferred embodiment, the welding torch adjustment mechanism 70 includes a servo motor 73. The extension direction of the output shaft of the servo motor 73 is consistent with the extension direction of the tubular metal sheath. The welding torch 31 is installed at the end of the output shaft of the servo motor 73. When the longitudinally wrapped metal sheath deflects, the output shaft of the servo motor 73 rotates, thereby driving the welding torch 31 to rotate circumferentially around the tubular metal sheath. At this time, the nozzle of the welding torch 31 rotates circumferentially, thereby adjusting the nozzle of the welding torch 31 to align with the gap position of the metal sheath. At this time, the weld position is consistent with the gap position of the metal sheath, thus ensuring the welding quality and the wrapping performance of the metal sheath.

[0035] Preferably, the welding torch adjustment mechanism 70 includes a mounting platform 72 and a three-axis motion mechanism 71 that drives the mounting platform 72 to extend along the X, Y, and Z axes. A servo motor 73 is mounted on the mounting platform 72. In practice, the three-axis motion mechanism 71 can drive the mounting platform 72 to move along the X, Y, and Z axes. At this time, the servo motor 73 and the welding torch 31 on it can also move along the X, Y, and Z axes with the mounting platform 72 to adjust the position of the servo motor 73 and the welding torch 31. On the one hand, this allows the welding torch adjustment mechanism 70 to be suitable for welding cables of different sizes. On the other hand, it allows the position of the welding torch 31 to be adjusted according to the weld quality during operation, such as adjusting the distance between the welding torch 31 and the gap between the welding torch 31 and the metal sheath. The three-axis motion mechanism 71 can be a three-axis motion mechanism of the prior art. In this exemplary embodiment, the drive mechanism of the three-axis motion mechanism 71 adopts a servo motor. The servo motor is electrically connected to the controller so as to realize the control of the three-axis motion mechanism 71 through the controller and automatically adjust the position of the three-axis motion mechanism 71 to adjust the position of the servo motor 73 and the welding gun 31 on it.

[0036] Preferably, the longitudinal wrapping forming assembly 60 includes a trimming mechanism 61, a rounding mechanism 62, a longitudinal wrapping arc forming mechanism 63, and a longitudinal wrapping forming mechanism 64 arranged in sequence. The trimming mechanism 61 includes a trimming mechanism mounting frame 611, an upper trimming mechanism roller 612, and a lower trimming mechanism roller 613. The upper trimming mechanism roller 612 and the lower trimming mechanism roller 613 are rotatably mounted on the trimming mechanism mounting frame 611 via a mounting shaft, and the upper trimming mechanism roller 612 and the lower trimming mechanism roller 613 are arranged vertically. The circumferential side of the lower trimming mechanism roller 613 is a concave arc surface, and the circumferential side of the upper trimming mechanism roller 612 is smaller than the circumferential side of the lower trimming mechanism roller 613. At this time, when the strip-shaped metal sheath passes through the upper trimming mechanism roller 612 and the lower trimming mechanism roller 613, the two sides of the strip-shaped metal sheath are trimmed upwards. The rounding mechanism 62 includes a rounding mechanism mounting frame 621, an upper rounding mechanism roller 622, and a lower rounding mechanism roller 623. The upper rounding mechanism roller 622 and the lower rounding mechanism roller 623 are rotatably mounted on the rounding mechanism mounting frame 621 via a mounting shaft, and the upper rounding mechanism roller 622 and the lower rounding mechanism roller 623 are arranged vertically. The circumferential side of the lower rounding mechanism roller 623 is a concave arc surface, and the circumferential side of the upper rounding mechanism roller 622 is a convex arc surface. The circumferential side of the upper rounding mechanism roller 622 is smaller than the circumferential side of the lower rounding mechanism roller 623. At this time, when the metal sheath with the upper edges tapering upward on both sides passes through the upper rounding mechanism roller 622 and the lower rounding mechanism roller 623, the metal sheath with the upper edges tapering upward on both sides is rounded into a semi-circular or semi-circular longitudinal wrapping structure. The longitudinally curved forming mechanism 63 includes a longitudinally curved forming mechanism mounting frame 631 and a longitudinally curved forming mechanism sleeve 632 mounted on the mounting frame 631. The longitudinally curved forming mechanism sleeve 632 has a flared through hole that is larger at the front and smaller at the back. The metal sheath, which has been pressed into a semi-circular or semi-circular longitudinally curved structure, passes through the longitudinally curved forming mechanism sleeve 632 and is further longitudinally curved into a near-tubular longitudinally curved structure. At this time, the two sides of the metal sheath are relatively close together. In some preferred embodiments, there can be multiple longitudinally curved forming mechanisms 63 to achieve a smoother longitudinally curved forming. The longitudinal wrapping forming mechanism 64 includes a longitudinal wrapping forming mechanism mounting bracket 641 and a longitudinal wrapping forming mechanism sleeve 642 mounted on the mounting bracket 641. The longitudinal wrapping forming mechanism sleeve 642 has a trumpet-shaped through hole that is larger at the front and smaller at the back. The metal sheath passes through the longitudinal wrapping forming mechanism sleeve 642 and is further longitudinally wrapped into a tubular shape. At this time, the tubular metal sheath exiting from the longitudinal wrapping forming mechanism sleeve 642 has a gap to be welded. It can be understood that the diameter of the two side openings of the through hole of the longitudinal wrapping forming mechanism sleeve 632 is larger than the diameter of the two side openings of the through hole of the longitudinal wrapping forming mechanism sleeve 642, while the circumference of the smaller rear opening of the longitudinal wrapping forming mechanism sleeve 642 is equal to or slightly larger than the width of the original strip-shaped metal sheath. At this time, when the metal sheath is longitudinally wrapped into a tubular shape, the two sides just abut or the gap is small to facilitate welding.

[0037] A wire core guiding mechanism 33 is provided in front of the longitudinally wrapped arc forming mechanism 63 to guide the wire core into the longitudinally wrapped arc forming mechanism 63. The wire core guiding mechanism 33 includes a wire core guiding mechanism mounting bracket 331 and a wire core guiding mechanism guide wheel 332 disposed on the wire core guiding mechanism mounting bracket 331. The circumferential side of the wire core guiding mechanism guide wheel 332 is a concave arc surface. At this time, the wire core passes around the wire core guiding mechanism guide wheel 332 from below, and after passing the wire core guiding mechanism guide wheel 332, it passes through the longitudinally wrapped arc forming mechanism 63, enters the interior of the metal sheath, and is gradually wrapped by the metal sheath.

[0038] Furthermore, the welding machine 30 can also be equipped with a trimming machine 34 for trimming the two sides of the metal sheath when it is in a strip-shaped structure. The trimming machine 34 can trim the two sides of the metal sheath when it is in a strip-shaped structure to a certain width, and the trimming machine 34 can keep the two sides of the metal sheath in a fixed position for subsequent processes. The welding machine 30 is equipped with a height adjustment mechanism 35 and a leveling mechanism 36. The leveling mechanism 36 has a horizontal gap, the height of which is the same as or slightly greater than the thickness of the strip-shaped metal sheath. This allows the metal sheath to be leveled and kept in a straight horizontal position after passing through the gap of the leveling mechanism 36, so that it can enter the subsequent processes. The height adjustment mechanism 35 includes two rollers with different heights. The height of the roller on the front side is the same as the height of the metal sheath when it comes out of the trimming machine 34, and the height of the roller on the rear side is the same as the height of the metal sheath when it enters the leveling mechanism 36. The edge trimming machine 34, the height adjustment mechanism 35, and the leveling mechanism 36 are arranged in sequence. The leveling mechanism 36 is located in front of the longitudinal wrapping forming assembly 60. The strip-shaped metal sheath that passes through the leveling mechanism 36 enters the longitudinal wrapping forming assembly 60 for longitudinal wrapping forming.

[0039] In this exemplary embodiment, the edge trimming machine 34, the height adjustment mechanism 35, the leveling mechanism 36, the edge gathering mechanism 61, the rounding mechanism 62, the wire core guiding mechanism 33, the longitudinal wrapping arc forming mechanism 63, the longitudinal wrapping forming mechanism 64, and the welding gun adjustment mechanism 70 are arranged in sequence and are all mounted on the welding machine 30. The servo motor 73 and its welding gun 31 are mounted on the welding gun adjustment mechanism 70.

[0040] Preferably, a side detection mechanism 90 is provided on the front side of the longitudinal arc-forming mechanism 63. The side detection mechanism 90 is used to detect the side position of the metal sleeve formed into an arc shape by the longitudinal arc-forming mechanism 63. The side detection mechanism 90 is electrically connected to the controller. When the side detection mechanism 90 detects that the longitudinal arc-shaped metal sleeve is deflected to one side, the controller controls the welding torch adjustment mechanism 70 to adjust the welding torch 31 to the deflected side so that the nozzle of the welding torch 31 is aimed at the gap position of the longitudinally formed metal sleeve. The method of making adjustments by recognizing the welding position and gap position through the camera 32 has a certain lag, making it difficult to predict in advance and make timely adjustments. If deflection occurs, due to the lag problem, there will always be a small portion of the gap with weld deviation. Based on this, through pre-detection, the present invention provides a side detection mechanism 90 in front of the longitudinal arc-forming mechanism 63. If the longitudinally arc-shaped metal sheath deflects to one side and is detected by the side detection mechanism 90, a signal is transmitted to the controller. The controller then adjusts the welding torch 31 to the deflected side using the welding torch adjustment mechanism 70, so that the nozzle of the welding torch 31 faces the gap of the longitudinally arc-forming metal sheath. This allows for more adjustment time through pre-detection and identification, making the adjustment more timely and reliable. The side detection mechanism 90 is located in front of the longitudinal arc-forming mechanism 63. On the one hand, there is a certain space between the two sides of the longitudinally arc-forming metal sheath, which is pressed into a semi-circular or semi-circular structure, allowing the side detection mechanism 90 to intervene for easy detection. On the other hand, if the cable deflects, the deflection of the metal sheath at this location will also be detected. If the side inspection mechanism 90 is positioned too early, such as in front of the edge-gathering mechanism 61 and the rounding mechanism 62, it is difficult to inspect because the metal sheath is only slightly formed and has just been cut and leveled, and its position and shape are relatively normal. If it is placed in front of the longitudinal forming mechanism 64, the space between the two sides of the metal sheath is too small, making it difficult for the side inspection mechanism 90 to enter for inspection.

[0041] Preferably, the side detection mechanism 90 includes a mounting frame 91, a spring 92 and a strain gauge 93. The spring 92 is mounted on the mounting frame 91, the strain gauge 93 is mounted in the middle of the spring 92, the strain gauge 93 is electrically connected to the controller, and the end of the spring 92 abuts against the side of the longitudinally arc-shaped metal sheath. When the metal sheath deflects, the position of its sides changes, with one side becoming relatively higher and the other relatively lower. The position of the side of the metal sheath can be detected by the contact between the end of the spring plate 92 and the side of the longitudinally wrapped, arc-shaped metal sheath. Since the change in height or height will cause deformation of the spring plate 92, this deformation will be detected by the strain gauge 93. The strain gauge 93 transmits the detection signal to the controller. The controller adjusts the welding torch adjustment mechanism 70 according to the signal. If the metal sheath deflects to one side, the controller can control the servo motor 73 on the welding torch adjustment mechanism 70 to rotate the nozzle of the welding torch 31 circumferentially to that side to adjust the nozzle of the welding torch 31 toward the gap position of the longitudinally wrapped metal sheath. Understandably, on the one hand, this adjustment is based on the cable pulling speed to ensure that the welding torch 31 completes its adjustment when it passes through the gap in the metal sheath, meaning that the welding torch 31 should not be adjusted too early or too late. On the other hand, the amount of circumferential rotation of the nozzle of the welding torch 31 is related to the amount of lateral deflection of the metal sheath. This relationship has been obtained through testing before operation. In other words, the controller can adjust the amount of circumferential rotation of the nozzle of the welding torch 31 according to the amount of lateral deflection of the metal sheath to ensure that the nozzle of the welding torch 31 can correspond to the gap in the metal sheath.

[0042] The spring 92 is detachably mounted on the mounting bracket 91, and its height and the force of the end of the spring 92 abutting against the side of the longitudinally arc-shaped metal sheath can be adjusted vertically. The height adjustment method is that a slider is provided at the other end of the spring 92 away from the metal sheath. The mounting bracket 91 has a vertical groove that matches the slider, and the mounting bracket 91 has a screw hole. By screwing in the bolt, the slider can be abutted against the groove by tightening the bolt, so as to keep the slider at a certain height in the groove.

[0043] Furthermore, there are two spring pieces 92, with the ends of each spring piece 92 abutting against the two sides of the longitudinally arc-shaped metal sheath. Simultaneous detection from both sides improves detection accuracy. A roller 94 is provided at the end of each spring piece 92, allowing the spring piece 92 to abut against the sides of the longitudinally arc-shaped metal sheath. By using the roller 94, sliding friction is transformed into rolling friction, thereby improving detection accuracy.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An argon arc welding apparatus for metal-sheathed cables, comprising a wire feeding frame (10), a tape feeding frame (20), a welding machine (30), a tracked traction machine (40), and a take-up frame (50), wherein the welding machine (30) includes a longitudinal wrapping forming assembly (60) for passing through and forming the metal sheath, and a welding torch (31) for welding the metal sheath covering the wire core into a tubular shape, characterized in that, The welding machine (30) is also equipped with a controller, a welding torch adjustment mechanism (70), and a camera (32) for gripping the gap position of the longitudinally wrapped metal sheath. The welding torch (31) is mounted on the welding machine (30) through the welding torch adjustment mechanism (70) so that the nozzle of the welding torch (31) can be rotated circumferentially around the tubular metal sheath through the welding torch adjustment mechanism (70) to adjust the nozzle of the welding torch (31) toward the gap position of the longitudinally wrapped metal sheath. The longitudinal wrapping forming component (60) includes a tuck-in mechanism (61), a rounding mechanism (62), a longitudinal wrapping arc forming mechanism (63), and a longitudinal wrapping forming mechanism (64) arranged in sequence. The front side of the longitudinal arc forming mechanism (63) is provided with a side detection mechanism (90). The side detection mechanism (90) is used to detect the side position of the metal sheath formed by the longitudinal arc forming mechanism (63). The side detection mechanism (90) is electrically connected to the controller. When the side detection mechanism (90) detects that the metal sheath formed by the longitudinal arc forming mechanism deflects to one side, the controller controls the welding torch adjustment mechanism (70) to adjust the welding torch (31) to the deflected side so that the nozzle of the welding torch (31) is directed toward the gap position of the longitudinally formed metal sheath. The side detection mechanism (90) includes a mounting frame (91), a spring (92), and a strain gauge (93). The spring (92) is mounted on the mounting frame (91), and the strain gauge (93) is mounted in the middle of the spring (92). The strain gauge (93) is electrically connected to the controller. There are two springs (92). A roller (94) is provided at the end of the spring (92). The spring (92) abuts against the side of the longitudinally arc-shaped metal sheath through the roller (94). The spring (92) is detachably mounted on the mounting frame (91) and its height can be adjusted vertically to adjust the force of the abutment between the end of the spring (92) and the side of the longitudinally arc-shaped metal sheath.

2. The argon arc welding apparatus for metal-sheathed cables according to claim 1, characterized in that, The welding torch adjustment mechanism (70) includes a servo motor (73), the extension direction of the output shaft of the servo motor (73) is consistent with the extension direction of the tubular metal sheath, and the welding torch (31) is mounted on the end of the output shaft of the servo motor (73).

3. The argon arc welding apparatus for metal-sheathed cables according to claim 2, characterized in that, The welding torch adjustment mechanism (70) includes a mounting platform (72) and a three-axis motion mechanism (71) that drives the mounting platform (72) to extend along the X-axis, Y-axis and Z-axis.

4. The argon arc welding apparatus for metal-sheathed cables according to claim 1, characterized in that, The front of the longitudinal arc forming mechanism (63) is provided with a wire core guiding mechanism (33) for guiding the wire core into the longitudinal arc forming mechanism (63).

5. The argon arc welding apparatus for metal-sheathed cables according to claim 1, characterized in that, The welding machine (30) is also equipped with a trimming machine (34) for trimming the two sides of the metal sheath when it is a strip structure.

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