A cable metal sheath extrusion welding device

Abstract

The application provides a cable metal sheath extrusion welding device and particularly relates to cable processing equipment. The cable metal sheath extrusion welding device comprises a base and a pressure welding head arranged at the middle part of the base, two movable plates are slidably connected to the base in the horizontal direction, two bearing seats are fixedly connected to each of the two movable plates, a rotating disc is rotatably connected to the bearing seat, and a clamping assembly for clamping a cable metal sheath is arranged on each of the rotating discs. The cable metal sheath extrusion welding device provided by the application realizes the convenient operation of the cable metal sheath from feeding, conveying, centering, clamping, synchronous rotation welding and loosening and discharging through the arrangement of the feeding assembly, the trigger type clamping assembly and the synchronous driving assembly. The processes are mutually matched and do not need manual intervention, so that the manufacturing cost is reduced, the production efficiency and the process stability are improved, and the device is particularly suitable for batch operation.

Description

Technical Field

[0001] This invention relates to the field of cable processing equipment technology, specifically to a cable metal sheath extrusion welding device. Background Technology

[0002] The cable metal sheath extrusion welding device is a key piece of equipment for connecting high-voltage and ultra-high-voltage cable lines. It applies pressure to the metal sheath joint to cause plastic deformation and diffusion connection of the metal, thereby forming a welded joint with high strength, high sealing performance and excellent conductivity. This process is one of the core links to ensure the long-term safe and stable operation of cable lines.

[0003] However, existing devices of this type often rely on multiple independent sensors, cylinders or servo motors to control each station separately in each stage of conveying, positioning, clamping and rotary welding. This not only makes the control system complex and costly, but also makes it difficult to fundamentally eliminate the risk of asynchrony accumulated due to signal delay, actuator response differences or programming errors. For example, in the conveying stage, if the opposing movements of the two moving plates are not synchronized, it will directly lead to axial alignment deviation of the workpiece. In the clamping stage, if there are differences in the sequence or force of the clamping action of each jaw, the workpiece will be subjected to lateral force and undergo micro-movement misalignment. In the welding rotation stage, it is difficult to ensure synchronization of the power source driving multiple workpieces. The phase difference of rotation will form shear stress at the weld, which will greatly affect the bonding quality and mechanical strength of the weld position.

[0004] Therefore, it is necessary to provide a new cable metal sheath extrusion welding device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by this invention is to overcome the technical problems of existing cable metal sheath welding processes, such as reliance on manual operation, asynchronous positioning and clamping, poor welding quality consistency, and low efficiency. This invention provides a cable metal sheath extrusion welding device. This device, through a multi-station clamping assembly that can rotate synchronously and a purely mechanically linked trigger clamping assembly, automatically completes precise positioning and synchronous clamping of the workpiece during transport by utilizing the interaction between the movable plate and the fixed stop bar. It also drives all workpieces to rotate strictly synchronously during welding, achieving automatic connection from loading, positioning, clamping, rotational welding to unloading. This improves the efficiency, process consistency, and reliability of the welding process, while reducing reliance on operator skills and the risk of workpiece damage.

[0006] To solve the above-mentioned technical problems, the present invention provides a cable metal sheath extrusion welding device, including a base and a pressure welding head disposed in the middle of the base. Two movable plates are slidably connected to the base in the horizontal direction. Two bearing seats are fixedly connected to each of the two movable plates. Turntables are rotatably connected to the bearing seats. Clamping components for clamping the cable metal sheath are provided on the multiple turntables. A material conveying component for driving the relative movement of the two movable plates is also provided on the base. A triggering component for driving the clamping components is provided on the bearing seats. A driving component for simultaneously driving the multiple turntables to rotate is also provided on the base.

[0007] Preferably, the material conveying assembly includes a slider in the shape of an inverted T fixedly connected to the bottom of the movable plate and a groove formed on the base. An electric push rod is fixedly connected to the bottom of the base, and the extended end of the electric push rod is fixedly connected to either of the two movable plates. A rack is fixedly connected to the bottom of each of the two movable plates. A first gear is rotatably connected inside the base. The two racks are staggered and both mesh with the first gear.

[0008] Preferably, the clamping assembly includes a limiting ring with an L-shaped cross-section fixedly connected to the turntable and a limiting groove on the support seat that matches the size of the limiting ring. Multiple sliding rods are rotatably connected to the turntable at equal intervals along the circumference. Each of the multiple sliding rods is fixedly connected to an arc-shaped clamping disc. The multiple sliding rods are used to cooperate with the triggering assembly to simultaneously drive the multiple clamping discs to move in order to clamp or release the workpiece.

[0009] Preferably, the triggering assembly includes a trigger ring slidably connected to the turntable and a guide surface formed on the slide rod. The guide surface is inclined, the trigger ring overlaps with the guide surface, the slide rod is elastically connected to the turntable via a first spring, and trigger blocks are elastically connected to both sides of the bearing seat. The trigger blocks overlap with the end face of the trigger ring.

[0010] Preferably, the trigger block is elastically connected to the support seat via a second spring, and two trigger blocks elastically connected on two support seats on the same movable plate are fixedly connected via a connecting rod. Multiple stop bars are fixedly connected to the base, and the trigger block and the stop bars coincide in the horizontal projection direction. The stop bars are used to squeeze the trigger block to drive the trigger ring.

[0011] Preferably, before the movable plate moves the workpiece and the workpiece reaches below the pressure welding head, the trigger block has contacted and been pressed against the stop bar, thereby driving the clamping assembly to complete the clamping of the workpiece.

[0012] Preferably, the drive assembly includes a drive rod rotatably connected to the base and a servo motor fixedly connected to the base. The output end of the servo motor is fixedly connected to the drive rod. A plurality of second gears are fixedly connected to the drive rod. A plurality of teeth are evenly spaced around the turntable and are used to mesh with the second gears.

[0013] Preferably, the drive rod includes a main rod and a secondary rod slidably connected to the main rod. A locking block is fixedly connected to the top of the secondary rod, and a slot adapted to the size of the locking block is provided on the main rod. Beneficial effects

[0014] Compared with related technologies, the cable metal sheath extrusion welding device provided by the present invention has the following advantages: 1. The cable metal sheath extrusion welding device proposed in this invention realizes convenient operation of cable metal sheath from feeding, conveying, centering, clamping, synchronous rotation welding and unloading through the setting of material feeding component, trigger clamping component and synchronous drive component. Each process cooperates with each other and triggers each other, without manual intervention, reducing manufacturing costs while improving production efficiency and process stability, and is especially suitable for batch operation.

[0015] 2. The cable metal sheath extrusion welding device proposed in this invention realizes the synchronous opposing movement of the movable plate through gear and rack, combined with the linkage clamping mechanism mechanically triggered by the fixed stop bar, ensuring that the workpiece is firmly clamped before reaching the welding position. This control of clamping first and then positioning, and the purely mechanical synchronization mechanism, ensure the alignment accuracy and stability of the workpiece during welding, and improve the quality of the weld.

[0016] 3. The telescopic drive rod of the cable metal sheath extrusion welding device proposed in this invention enables the device to adapt to different positions of the movable plate, thereby indirectly supporting the clamping of workpieces of different lengths. At the same time, the drive component adopts a single motor synchronous drive, which is simple to control and has extremely high synchronization, ensuring the consistency of the rotation of the welded workpiece. This device not only improves work efficiency but also expands its applicability, and can adapt to various processing needs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the structure of a cable metal sheath extrusion welding device according to the present invention; Figure 2 This is a bottom view schematic diagram of a cable metal sheath extrusion welding device according to the present invention; Figure 3 This is another bottom view schematic diagram of a cable metal sheath extrusion welding device according to the present invention; Figure 4 This is a schematic diagram of the structure of the support base of the cable metal sheath extrusion welding device of the present invention; Figure 5 This is a split schematic diagram of the support seat of the cable metal sheath extrusion welding device of the present invention; Figure 6 This is a cross-sectional schematic diagram of the turntable of a cable metal sheath extrusion welding device according to the present invention; Figure 7 This is a connection diagram of the drive assembly of a cable metal sheath extrusion welding device according to the present invention; Figure 8 This is a cross-sectional schematic diagram of the drive rod of a cable metal sheath extrusion welding device according to the present invention.

[0019] Explanation of icon numbers: 1. Base; 11. Pressure welding head; 12. Movable plate; 13. Bearing seat; 14. Turntable; 2. Material conveying assembly; 21. Electric push rod; 22. Slider; 23. Slide groove; 24. Rack; 25. First gear; 3. Clamping assembly; 311. Limiting ring; 312. Limiting groove; 33. Slide rod; 34. Clamping plate; 4. Trigger assembly; 41. Guide surface; 42. First spring; 43. Trigger ring; 44. Trigger block; 45. Connecting rod; 46. Second spring; 47. Stop bar; 5. Drive assembly; 51. Servo motor; 52. Drive rod; 521. Main rod; 522. Secondary rod; 53. Second gear; 54. Tooth; 55. Locking block; 56. Locking groove. Detailed Implementation

[0020] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figures 1 to 8 As shown in the embodiment of the present invention, a cable metal sheath extrusion welding device is provided. The pressure welding head 11 can be a welding extrusion head driven by a hydraulic cylinder, which is fixedly installed at the center of the base 1 as a welding station. On the base 1, two movable plates 12 that can slide synchronously are slidably installed. Two bearing seats 13 are installed on each movable plate 12, thus forming a total of four stations on the device. Each bearing seat 13 is equipped with a freely rotatable turntable 14 through a bearing. The turntable 14 is equipped with a clamping assembly for clamping the end of the cable metal sheath. Component 3, the feeding assembly 2 is responsible for driving the two movable plates 12 to move towards or away from each other to send the workpiece into or out of the welding station. The trigger assembly 4 is set on the support seat 13 and is used to control the clamping assembly 3 to clamp or release the workpiece during the movement of the movable plates 12. The drive assembly 5 is used to drive all four turntables 14 to rotate synchronously during welding. In this way, multiple processes such as workpiece conveying, positioning, clamping and rotary welding are integrated into one equipment. The movement of the movable plates 12 connects the four stations in series, which improves production efficiency and process consistency.

[0024] The material conveying assembly 2 includes a slider 22 in an inverted T-shape fixedly connected to the bottom of the movable plate 12 and a groove 23 formed on the base 1. The slider 22 and the groove 23 provide guidance for the movable plate 12, ensuring smooth and wobbly sliding. The electric push rod 21 serves as the power source, with its cylinder fixed below the base 1 and its piston rod connected to one of the movable plates 12. A rack 24 is installed at the bottom of both the active plate and the other movable plate 12, and these two racks 24 are staggered on the horizontal plane. Inside the base 1, a freely rotatable first gear 25 is installed, which simultaneously interacts with the upper and lower... The two staggered racks 24 mesh. When the electric push rod 21 retracts, it pulls the active plate to move towards the welding center. The rack 24 at the bottom of the active plate drives the first gear 25 to rotate. The rotation of the first gear 25 in turn drives the rack 24 at the bottom of the driven plate to move. Due to the meshing relationship of the gear and rack 24, the driven plate will move synchronously towards the welding center in opposite directions, thereby realizing the relative movement of the two movable plates 12. Only one electric push rod 21 is needed to drive the two movable plates 12 to move synchronously towards or away from each other, ensuring that the workpieces installed on the two movable plates 12 can be accurately aligned with the center pressure welding head 11.

[0025] In addition, the clamping assembly 3 includes a limiting ring 311 with an L-shaped cross-section fixedly connected to the turntable 14 and a limiting groove 312 on the support seat 13 that matches the size of the limiting ring 311. This arrangement allows the turntable 14 to rotate freely around its axis while constraining it axially to prevent it from coming off. On the surface of the turntable 14, multiple radial guide grooves are evenly distributed along the circumference. A sliding rod 33 that can slide radially is installed in each guide groove. An arc-shaped clamping plate 34 is fixedly installed at the end of each sliding rod 33 facing the center. Multiple clamping plates 34 together form a variable clamping hole. The tail of the sliding rod 33 is designed with a structure that cooperates with the trigger assembly 4. This arrangement can realize the rotational connection of the turntable 14 and decompose the clamping function into multiple independently radially movable sliding rods 33 and clamping plates 34, so that the clamping hole diameter can be continuously adjusted.

[0026] Specifically, the trigger assembly 4 includes a trigger ring 43 slidably connected to the turntable 14 and a guide surface 41 formed on the slide rod 33. The trigger ring 43 is a circular ring that can slide along the axis of the turntable 14. At the tail of each slide rod 33, an inclined plane is machined as a guide surface 41. The inner side or end face of the trigger ring 43 contacts these guide surfaces 41. Each slide rod 33 is also connected to a first spring 42. The spring force is such that the slide rod 33 tends to move towards the released position. On both sides of the support seat 13 body, a horizontally retractable trigger is installed. The trigger block 44 and the trigger ring 44 are kept in an outward popping tendency by the spring. The inner end face of the two trigger blocks 44 is opposite to the end face of the trigger ring 43. When the external force pushes the trigger block 44 to move inward, the trigger block 44 squeezes the trigger ring 43, forcing the trigger ring 43 to move axially. The axial movement of the trigger ring 43 overcomes the elastic force of the first spring 42 through its contact with the inclined surface of the tail of the slide rod 33, pushing all the slide rods 33 to retract synchronously towards the center, thereby achieving clamping. When the external force is removed, under the action of the first spring 42, the slide rod 33 moves outward, the trigger ring 43 resets, and the clamping is released.

[0027] Each trigger block 44 is mounted on the side wall of the support seat 13, with a second spring 46 providing elastic support at its rear. The trigger blocks 44 of the two support seats 13 on the same movable plate 12 are not independent, but are fixedly connected together by a rigid connecting rod 45 to form a linked linear whole. On the base 1, corresponding to the movement path of the movable plate 12, multiple stop bars 47 are fixedly installed. When the movable plate 12 carries the support seat 13 and the workpiece to the welding station, the trigger blocks 44 at both ends of the connecting rod 45 will enter the movement path of the stop bars 47. In the horizontal projection, the trigger blocks 44 and the stop bars 47 coincide, so they will inevitably collide. The trigger blocks 44 of the two support seats 13 are rigidly connected by the connecting rod 45 to ensure that the trigger blocks 44 can be squeezed by the stop bars 47 at the same time, thereby driving the clamping components 3 on the two stations to move in absolute synchronization, ensuring that the two workpieces are clamped at the same time, providing the prerequisite for subsequent alignment and welding.

[0028] Secondly, when the movable plate 12, driven by the feeding assembly 2, carries the cable sheath towards the central pressure welding head 11, the trigger blocks 44 on both sides of the movable plate 12 must have already contacted the fixed stop 47 before the end of the workpiece reaches directly below the mold of the pressure welding head 11. During this process, they must be fully squeezed, thereby completing the firm clamping of the workpiece through the transmission of the trigger ring 43 and the slide bar 33. After that, the movable plate 12 continues to advance a small distance, accurately delivering the clamped and stabilized workpiece to the welding position. This setting ensures the welding quality and realizes the process of first stabilizing the clamping and then accurately positioning. If the clamping action occurs simultaneously with or after reaching the welding position, the workpiece may be finally aligned in a state that is not fixed, which can easily cause slight misalignment or shaking, affecting the concentricity and quality of the weld. This design forces the clamping action to be completed in advance by setting mechanical stops on the path, so that the workpiece is already in a stable clamping state when it enters the most critical welding and butt joint position, improving the accuracy and consistency of the welding.

[0029] Furthermore, the drive assembly 5 includes a drive rod 52 rotatably connected to the base 1 and a servo motor 51 fixedly connected to the base 1. The drive rod 52 is a long shaft installed parallel to the direction of movement of the movable plate 12. The servo motor 51 is fixed to the base 1 and directly drives the drive rod 52 to rotate through a coupling. On the drive rod 52, corresponding to the positions of the four turntables 14, a second gear 53 is fixedly installed on each. On the outer circumference of each turntable 14, a complete ring of teeth 54 is machined or installed to form a large gear ring. This arrangement allows a single servo motor 51 to simultaneously drive all four turntables 14 at the workstations to rotate in strict synchronization through a single drive rod 52 and multiple gears. This ensures that during the welding process, the two sections of the sheath to be welded and the connecting pipes that may be used can rotate together with the exact same angular velocity and phase, thereby obtaining a uniform annular weld.

[0030] Furthermore, in order to accommodate the changing distance between the two movable plates 12, the drive rod 52 is designed as a telescopic structure, which consists of a main rod 521 and one or more auxiliary rods 522 connected together. The auxiliary rods 522 can slide inside the main rod 521 to change the total length. In order to transmit torque while telescopically extending, a locking block 55 is fixed at the end of the auxiliary rod 522, and a slot 56 extending axially is opened at the corresponding position on the inner wall of the main rod 521. The locking block 55 is embedded in the locking slot 56, so that the main rod 521 and the auxiliary rod 522 are fixed in the circumferential direction and can rotate synchronously, but can slide relatively freely in the axial direction. With this setting, no matter what the distance between the two movable plates 12 is, the drive rod 52 can adapt to this distance change by extension and retraction, ensuring that each second gear 53 on it can always be kept on the meshing axis with the gear ring of the corresponding station turntable 14. The cooperation between the locking block 55 and the locking slot 56 ensures that the torque can be effectively transmitted on the telescopic drive rod 52, ensuring that the rotation synchronization of all turntables 14 is not affected at various distances.

[0031] Working principle: When the device starts working, the operator first places the two sections of cable metal sheaths to be welded into predetermined positions on the bearing seats 13 of the two movable plates 12. After starting the equipment, the electric push rod 21 in the material conveying assembly 2 begins to move. Its piston rod directly drives one of the movable plates 12 connected to it to move towards the pressure welding head 11 in the middle of the base 1. At the same time, the rack 24 fixed to the bottom of the active plate moves accordingly, driving the first gear 25 meshing with it to rotate. The first gear 25 then drives the rack 24 at the bottom of the other movable plate 12 to mesh, thereby forcing the two movable plates 12 to move synchronously towards each other, smoothly conveying the workpiece to the welding station. During the process of the movable plates 12 carrying the workpiece towards the welding center, when the bearing seat 13... When the trigger blocks 44, which are elastically connected on both sides, move to the position of the preset fixed stop bar 47 on the base 1, the trigger blocks 44 are blocked and squeezed by the stop bar 47. This squeezing force is transmitted synchronously through the connecting rod 45, causing the trigger blocks 44 of the two bearing seats 13 on the same movable plate 12 to retract inward at the same time. The inner end face of the trigger block 44 pushes the trigger ring 43, which is slidably connected to the turntable 14, to move axially. The movement of the trigger ring 43, through its cooperation with the inclined surfaces of the tails of multiple slide bars 33, converts the axial movement into a radial component force, overcomes the elastic force of the first spring 42, and forces all slide bars 33 to retract synchronously towards the center, thereby driving the arc-shaped clamping plate 34 fixed at the end of the slide bar 33 to firmly clamp the workpiece. The position of the stop bar 47 is designed to ensure that the workpiece is conveyed to the center. Before the final mating position directly below the pressure welding head 11, the clamping action is completed, allowing the workpiece to enter the welding position in a stable posture. After the two workpieces are precisely aligned and clamped under the pressure welding head 11, the drive assembly 5 is activated, and the servo motor 51 drives the drive rod 52 to rotate. Multiple second gears 53 fixed on the drive rod 52 rotate synchronously. Since the teeth 54 on the outer periphery of each turntable 14 mesh with the corresponding second gear 53, all four turntables 14 are forced to drive synchronously, causing the two workpieces clamped on them to rotate together at the same speed and phase. At the same time, the pressure welding head 11 applies huge welding pressure downward under program control, squeezing the mating joint of the rotating workpieces. The rotation and pressure are combined. The welding process is completed, forming a dense annular weld. After the welding process is completed, the pressure welding head 11 is reset and raised, the servo motor 51 stops, and the drive rod 52 stops rotating. Then, the electric push rod 21 in the feeding assembly 2 is driven in the reverse direction, pulling the movable plate 12 to move away from the welding center. As the trigger block 44 disengages from the fixed stop rod 47, it resets under the action of the second spring 46 and no longer squeezes the trigger ring 43. The first spring 42 at the tail of the slide rod 33 in the clamping assembly 3 releases its elastic force, pushing the slide rod 33 to move radially outward, causing the clamping plate 34 to release the workpiece. At the same time, the trigger ring 43 also resets to the initial position. The movable plate 12 continues to move to the initial loading and unloading position, and the operator can then take out the workpiece welded together. The above operation can then be repeated.

[0032] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A cable metal sheath extrusion welding device, characterized in that: The device includes a base (1) and a pressure welding head (11) located in the middle of the base (1). Two movable plates (12) are slidably connected to the base (1) in the horizontal direction. Two bearing seats (13) are fixedly connected to each of the two movable plates (12). Turntables (14) are rotatably connected to the bearing seats (13). Clamping components (3) for clamping the metal sheath of the cable are provided on each of the multiple turntables (14). A material conveying component (2) for driving the relative movement of the two movable plates (12) is also provided on the base (1). A triggering component (4) for driving the clamping component (3) is provided on the bearing seat (13). A driving component (5) for simultaneously driving the multiple turntables (14) to rotate is also provided on the base (1).

2. The cable metal sheath extrusion welding device according to claim 1, characterized in that: The material conveying assembly (2) includes a slider (22) in the shape of an inverted T fixedly connected to the bottom of the movable plate (12) and a groove (23) opened on the base (1). An electric push rod (21) is fixedly connected to the bottom of the base (1). The extended end of the electric push rod (21) is fixedly connected to either of the two movable plates (12). A rack (24) is fixedly connected to the bottom of each of the two movable plates (12). A first gear (25) is rotatably connected inside the base (1). The two racks (24) are staggered and both mesh with the first gear (25).

3. The cable metal sheath extrusion welding device according to claim 1, characterized in that: The clamping assembly (3) includes a limiting ring (311) with an L-shaped cross section fixedly connected to the turntable (14) and a limiting groove (312) on the bearing seat (13) that is adapted to the size of the limiting ring (311). Multiple slide rods (33) are rotatably connected to the turntable (14) at equal intervals along the circumference. Each slide rod (33) is fixedly connected to a clamping disc (34) with an arc shape. The multiple slide rods (33) are used to cooperate with the triggering assembly (4) to drive the multiple clamping discs (34) to move simultaneously to clamp or release the workpiece.

4. The cable metal sheath extrusion welding device according to claim 3, characterized in that: The trigger assembly (4) includes a trigger ring (43) slidably connected to the turntable (14) and a guide surface (41) formed on the slide rod (33). The guide surface (41) is inclined. The trigger ring (43) overlaps with the guide surface (41). The slide rod (33) is elastically connected to the turntable (14) through a first spring (42). Both sides of the bearing seat (13) are elastically connected to trigger blocks (44). The trigger blocks (44) overlap with the end face of the trigger ring (43).

5. The cable metal sheath extrusion welding device according to claim 4, characterized in that: The trigger block (44) is elastically connected to the support seat (13) via a second spring (46). Two trigger blocks (44) elastically connected on two support seats (13) on the same movable plate (12) are fixedly connected via a connecting rod (45). Multiple stop rods (47) are fixedly connected on the base (1). The trigger block (44) and the stop rod (47) coincide in the horizontal projection direction. The stop rod (47) is used to squeeze the trigger block (44) to drive the trigger ring (43).

6. The cable metal sheath extrusion welding apparatus according to claim 5, characterized in that: Before the movable plate (12) moves the workpiece and the workpiece reaches below the pressure welding head (11), the trigger block (44) has contacted and been squeezed by the stop bar (47), thereby driving the clamping assembly (3) to complete the clamping of the workpiece.

7. The cable metal sheath extrusion welding device according to claim 1, characterized in that: The drive assembly (5) includes a drive rod (52) rotatably connected to the base (1) and a servo motor (51) fixedly connected to the base (1). The output end of the servo motor (51) is fixedly connected to the drive rod (52). A plurality of second gears (53) are fixedly connected to the drive rod (52). A plurality of teeth (54) are evenly spaced around the turntable (14). The teeth (54) are used to mesh with the second gears (53).

8. The cable metal sheath extrusion welding apparatus according to claim 7, characterized in that: The drive rod (52) includes a main rod (521) and a secondary rod (522) slidably connected to the main rod (521). A locking block (55) is fixedly connected to the top of the secondary rod (522), and a slot (56) adapted to the size of the locking block (55) is provided on the main rod (521).

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