A car lock head lock rod automatic welding machine

Abstract

The application discloses a kind of car compartment lock head lock rod automatic welding machine, comprising: rack, lock rod support mechanism, lock head clamping mechanism and welding torch mechanism, the lock head clamping mechanism includes sliding support, rotating carrier, rotary drive device, positioning element and clamping device, the present application relates to welding equipment technical field, by positioning element and clamping device are integrated on rotating carrier, so that the positioning of lock head, clamping and synchronous rotation three functions in compact space are realized simultaneously. Two sets of lock head clamping mechanism are arranged along the axial direction of lock rod, and the corresponding end of lock head is independently positioned and clamped, which structurally ensures the axial concentricity of the two end lock heads and the parallelism of the lock head faces. Two sets of welding torch mechanism correspond to the two ends respectively, and welding can be performed simultaneously when welding. The synchronous rotation of the two end lock heads improves the welding efficiency by more than one time compared to the single gun scheme.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to an automatic welding machine for car lock cylinders and locking rods. Background Technology

[0002] In the production of components such as carriage door locks, lock heads need to be welded to both ends of the lock rod to form a locking assembly. This welding process requires high positional accuracy; the lock heads at both ends must be axially concentric and their end faces must be parallel to each other. Otherwise, the assembly accuracy and reliability of use will be affected.

[0003] Currently, most related equipment on the market is a single-gun welding machine, which can only complete the welding of one end of the lock head in a single clamping. This type of equipment has significant shortcomings: firstly, the welding efficiency is low, requiring two processes to complete one lock head; secondly, because the two lock heads need to be clamped and welded separately, it is difficult to guarantee the axial concentricity and parallelism of the two lock heads after welding, resulting in poor product consistency. The single-gun solution cannot simultaneously meet the high-precision relative position requirements of both lock heads in a single positioning. Therefore, a highly efficient automatic welding device is needed that can weld both lock heads simultaneously and ensure concentricity and parallelism within a limited space with a compact structure. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an automatic welding machine for car lock cylinders and locking rods, solving the problem that existing equipment cannot simultaneously achieve high-precision positioning and synchronous rotational welding of the lock cylinders at both ends of the locking rod within a compact structure.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an automatic welding machine for car lock cylinders and locking rods, comprising: frame; A locking rod support mechanism is mounted on the frame to support the locking rod and allow the locking rod to rotate about its own axis, the axis of the locking rod extending along a first direction; A lock head clamping mechanism, wherein two lock head clamping mechanisms are arranged at intervals along the first direction on the frame, and the lock head clamping mechanism includes: A sliding support is slidably disposed on the frame along the first direction; A rotating bearing member is rotatably disposed on the sliding support, and the rotation axis of the rotating bearing member extends along the first direction; A rotary drive device is used to drive the rotary bearing to rotate; The positioning element is fixed to the rotating bearing and has a positioning surface that matches the outer contour of the lock head; A clamping device is provided on the rotating bearing member to press the lock head against the positioning element; A welding torch mechanism, wherein a pair of welding torch mechanisms that can slide along the first direction are provided on the frame, and the two welding torch mechanisms are respectively provided corresponding to the two locking head clamping mechanisms, and each welding torch mechanism includes: The movable support slides in conjunction with the frame along the first direction; A welding gun is movably mounted on the movable support along the radial direction of the locking rod, so as to be close to or away from the joint between the lock head and the locking rod; A welding torch drive device is used to drive the welding torch to move radially along the locking rod.

[0006] In some embodiments, the rotary drive device includes: A rotating motor is mounted on the sliding support, and the drive end of the rotating motor is provided with a gear; The gear ring is coaxially sleeved on the outer peripheral wall of the rotating bearing member and meshes with the gear.

[0007] In some embodiments, the clamping device includes: A hinge support is provided on the positioning element; The clamping element is hinged to the hinge support and can swing relative to the positioning element; The mounting bracket is located on the side of the rotating support member away from the lock head; A clamping drive cylinder is provided, the cylinder body of which is hinged to the mounting bracket, and the telescopic end is connected to the clamping element to drive the clamping element to swing and press the lock head onto the positioning element.

[0008] In some embodiments, the locking rod support mechanism includes: A support slide is slidably engaged with the frame along the first direction; A support cylinder, wherein the cylinder body of the support cylinder is disposed on the support slide, and a pulley bracket is installed at the telescopic end of the support cylinder; A rotating pulley is rotatably mounted on the pulley bracket, and the rotation axis of the rotating pulley extends along the first direction; The supporting cylinder is used to drive the rotating pulley to move up and down along a second direction, which is perpendicular to the first direction.

[0009] In some embodiments, there are two rotating pulleys, and a support space is formed between the two rotating pulleys for placing the locking rod. When the locking rod is placed between the two rotating pulleys, it contacts the outer peripheral surfaces of the two rotating pulleys respectively.

[0010] In some embodiments, the frame is provided with a first slide rail and a second slide rail, both of which extend along the first direction. The sliding support is slidably engaged with the first slide rail, and the movable support and the locking rod support mechanism are both slidably engaged with the second slide rail.

[0011] In some embodiments, the welding torch driving device is configured as a welding torch driving cylinder, the cylinder body of the welding torch driving cylinder is disposed on the movable support, and the telescopic end of the welding torch driving cylinder is connected to the welding torch.

[0012] In some embodiments, the welding torch driving device further includes a welding torch adjusting slide, which is connected to the telescopic end of the welding torch driving cylinder, and the welding torch is connected to the welding torch adjusting slide. The welding torch adjusting slide is used to adjust the spatial position of the welding torch in the first direction.

[0013] In some embodiments, the welding torch mechanism further includes a wire feeder disposed on the movable support for supplying welding wire to the welding torch.

[0014] In some embodiments, the number of locking rod support mechanisms is at least two, and they are spaced apart along the first direction.

[0015] (III) Beneficial Effects The beneficial effects of this invention are: The automatic welding machine for car lock cylinders and locking rods provided by this invention integrates positioning elements and clamping devices onto a rotating support component, enabling the positioning, clamping, and synchronous rotation of the lock cylinders to be achieved simultaneously within a compact space. Two sets of lock cylinder clamping mechanisms are arranged at intervals along the axial direction of the locking rod, each independently positioning and clamping the corresponding lock cylinder. Structurally, this ensures that the axial concentricity and parallelism of the lock cylinder surfaces at both ends are guaranteed. Two sets of welding gun mechanisms correspond to the two ends respectively, allowing simultaneous welding. The lock cylinders at both ends rotate synchronously, increasing welding efficiency by more than double compared to a single-gun solution. The welding gun feeds independently along the radial direction of the locking rod, coordinating with the rotational movement of the lock cylinder around a first direction to achieve complete circumferential welding with a uniform and full weld. The locking rod support mechanism allows the locking rod to rotate freely, ensuring no torsional stress is generated during synchronous rotation driven by the lock cylinder. The entire machine has a compact structure, simple positioning, convenient clamping operation, and good industrial applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the rotary drive device of the present invention.

[0018] Figure 3 This is a schematic diagram of the clamping device of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure at point A of the present invention.

[0020] In the diagram: 1. Frame; 2. Sliding support; 3. Rotating bearing component; 4. Positioning element; 5. Moving support; 6. Welding gun; 7. Rotating motor; 8. Gear; 9. Gear ring; 10. Hinge support; 11. Clamping element; 12. Mounting bracket; 13. Clamping drive cylinder; 14. Support slide; 15. Support cylinder; 16. Pulley bracket; 17. Rotating pulley; 18. First slide rail; 19. Second slide rail; 20. Welding gun drive cylinder; 21. Welding gun adjusting slide; 22. Wire feeder; 23. Locking rod; 24. Lock head. Detailed Implementation

[0021] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The automatic welding machine for car lock cylinders and locking rods proposed in this invention integrates positioning, clamping, and rotation functions into the lock cylinder clamping mechanism, and is equipped with an independently sliding welding gun mechanism. This aims to solve the problem that existing equipment cannot simultaneously ensure that the lock cylinders at both ends are concentric and parallel, and that the welding efficiency is low.

[0023] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0024] For ease of description, the horizontal direction of the locking bar's axis is defined as the first direction, and the vertical lifting direction is defined as the second direction, which is perpendicular to the first direction.

[0025] Example 1

[0026] Please see Figure 1 The present invention provides a technical solution: an automatic welding machine for car lock cylinders and locking rods, comprising a frame 1, a locking rod support mechanism, two lock cylinder clamping mechanisms, and two welding gun mechanisms.

[0027] The frame 1 is a frame structure made of welded or bolted steel sections, which serves as the basic support for the whole machine.

[0028] A locking rod support mechanism is mounted on the frame 1 to support the locking rod 23 and allow it to rotate around its own axis. The axis of the locking rod 23 extends along a first direction. Two lock head clamping mechanisms are arranged at intervals along the first direction on the frame 1, corresponding to the two ends of the locking rod 23 respectively. Each lock head clamping mechanism includes a sliding support 2, a rotating bearing 3, a rotating drive device, a positioning element 4, and a clamping device. The sliding support 2 is slidably mounted on the frame 1 along the first direction and has locking bolt holes. After the sliding support 2 is adjusted to the desired position, the locking bolts are screwed in to secure it to the first slide rail 18. The rotating bearing 3 is rotatably mounted on the sliding support 2 via bearings, and its rotation axis extends along the first direction. The rotating drive device drives the rotating bearing 3 to rotate. The positioning element 4 is fixed to the rotating bearing 3 and has a positioning surface machined on it to mate with the outer contour of the lock head 24. The clamping device is mounted on the rotating bearing 3 and is used to press the lock head 24 onto the positioning element 4.

[0029] There are two welding torch mechanisms, which are slidably mounted on the frame 1 along a first direction and correspond to two locking head clamping mechanisms respectively. Each welding torch mechanism includes a movable support 5, a welding torch 6, and a welding torch drive device. The movable support 5 is slidably engaged with the frame 1 along the first direction, and the welding torch 6 is movably mounted on the movable support 5 along the radial direction of the locking rod, with its front end pointing towards the joint between the locking head 24 and the locking rod 23. The welding torch drive device is used to drive the welding torch 6 to move radially along the locking rod 23.

[0030] During operation, the locking rod support mechanism supports the locking rod 23 at a preset height. Two locking heads 24 are placed on the positioning surfaces of the positioning elements 4 at both ends, and the clamping device presses and fixes the locking heads 24. At this time, the locking heads 24 at both ends automatically achieve axial concentricity and end face parallelism under the constraint of their respective positioning surfaces. Then, the sliding supports 2 of the two locking head clamping mechanisms are adjusted along the first direction to a position suitable for the length of the locking rod 23 and locked, so that the locking heads 24 on both sides abut against the ends of the locking rod 23. The welding guns 6 of the two welding gun mechanisms are radially fed to the welding position under the drive of the welding gun drive device. The rotary drive device drives the rotary bearing 3 to rotate around the first direction, causing the locking heads 24 and locking rod 23 to rotate synchronously. During the rotation of the locking heads 24, the welding gun 6 completes continuous welding of the entire circumferential seam.

[0031] Please see Figure 2In this embodiment, the rotary drive device includes a rotary motor 7 and a gear 8 and gear ring 9 transmission mechanism. The rotary motor 7 is a servo motor or a stepper motor, fixedly mounted on the sliding support 2, with its output shaft extending axially along the locking rod 23. The output shaft end of the rotary motor 7 is fixedly connected to the gear 8 via a key. The gear ring 9 is coaxially sleeved and fixed to the outer peripheral wall of the rotating bearing 3, and the gear ring 9 and gear 8 are meshed. When the rotary motor 7 is running, it drives the gear ring 9 and the rotating bearing 3 to rotate synchronously through the gear 8. When a servo motor is used, the controller can precisely control the speed and rotation angle of the rotary motor 7 to ensure that the locking head 24 rotates uniformly for one revolution during the welding process, and the welding torch completes uniform circumferential welding. The rotary motor 7 automatically stops after welding is completed, and the stopping position of the rotating bearing 3 can be kept consistent through the controller's zero-return function, facilitating the clamping of the next workpiece. The rotary motors 7 of the two locking head clamping mechanisms are controlled by the same controller, which sends synchronous pulse commands to the two servo drivers to ensure that the rotating bearings 3 at both ends rotate strictly synchronously.

[0032] Please see Figure 3 In this embodiment, the clamping device includes a hinge support 10, a clamping element 11, a mounting bracket 12, and a clamping drive cylinder 13. The hinge support 10 is fixed to the side of the positioning element 4. The clamping element 11 is a long, narrow swing arm, the middle of which is hinged to the hinge support 10 via a pin, allowing it to swing around the hinge support 10. The mounting bracket 12 is fixed to the end face of the rotating bearing 3 away from the lock head 24. The tail of the clamping drive cylinder 13 is hinged to the mounting bracket 12, and the piston end of the clamping drive cylinder 13 is hinged to one end of the clamping element 11. When the piston end of the clamping drive cylinder 13 extends, it pushes the clamping element 11 to swing around the hinge support 10, and the other end of the clamping element 11 presses the lock head 24 against the positioning surface of the positioning element 4. A pressure regulating valve is provided in the air circuit of the clamping drive cylinder 13 to adjust the clamping force to accommodate lock heads 24 of different materials and avoid damaging the workpiece surface. When the piston retracts, the clamping element 11 is released, making it easier to pick up and put down the workpiece. At the same time, in order to ensure that the clamping drive cylinder 13 and the rotating bearing 3 rotate synchronously without interference, the clamping drive cylinder 13 and the external air source should be connected by a rotary joint.

[0033] Please see Figure 4In this embodiment, the locking rod support mechanism includes a support slide 14, a support cylinder 15, a pulley bracket 16, and a rotating pulley 17. The support slide 14 is slidably engaged with the frame 1 along a first direction. The cylinder body of the support cylinder 15 is vertically fixed to the support slide 14 by bolts, and the telescopic end of the support cylinder 15 extends upward. The pulley bracket 16 is a U-shaped fork, the bottom of which is fixed to the telescopic end of the support cylinder 15. The rotating pulley 17 is rotatably mounted on the pulley bracket 16 via rolling bearings, and its rotation axis extends along the first direction. The support cylinder 15 is used to drive the rotating pulley 17 to rise and fall along a second direction to adjust the center height of the locking rod 23, so that the axis of the locking rod 23 is precisely aligned with the rotation axis of the rotating bearing 3.

[0034] In this embodiment, two rotating pulleys 17 are symmetrically mounted on the pulley bracket 16, forming a V-shaped support space between them. When the locking rod 23 is placed within this support space, its outer circumferential surface contacts the outer circumferential surfaces of the two rotating pulleys 17 respectively, forming a two-point stable support. The two rotating pulleys 17 provide radial constraint on the locking rod 23, preventing radial displacement of the locking rod 23 during welding. The outer circumferential surface of the rotating pulleys 17 can be covered with polyurethane or rubber material to increase the coefficient of friction with the surface of the locking rod 23, ensuring that the locking head 24 can reliably drive the locking rod 23 to rotate synchronously when rotating, while avoiding scratching the surface of the locking rod 23.

[0035] In this embodiment, the frame 1 is provided with a first slide rail 18 and a second slide rail 19, both extending along a first direction. The sliding support 2 is slidably engaged with the first slide rail 18, and the movable support 5 and the support slide 14 of the locking rod support mechanism are slidably engaged with the second slide rail 19. By arranging the locking head clamping mechanism, the welding torch mechanism, and the locking rod support mechanism on different slide rails, mutual interference can be avoided when the mechanisms are adjusted along the first direction. The first slide rail 18 and the second slide rail 19 are arranged parallel to each other on the frame 1, and each slide rail has a limiting block at both ends to prevent the sliding seat from dislodging from the guide rail.

[0036] In this embodiment, the welding torch driving device is constructed as a welding torch driving cylinder 20. The cylinder body of the welding torch driving cylinder 20 is fixed to the movable support 5 by bolts, and the telescopic end of the welding torch driving cylinder 20 is connected to the welding torch 6. When the piston rod of the welding torch driving cylinder 20 extends, it pushes the welding torch 6 radially along the locking rod 23 to the welding position; when the piston rod retracts, it drives the welding torch 6 to retract. A speed regulating valve is provided in the air circuit of the welding torch driving cylinder 20, which can adjust the feed and retraction speed of the welding torch 6 to achieve smooth movement.

[0037] In this embodiment, the welding torch driving device further includes a welding torch adjusting slide 21. The welding torch adjusting slide 21 is a screw-driven fine-tuning slide, its base fixedly connected to the telescopic end of the welding torch driving cylinder 20. The welding torch 6 is fixed on the sliding plate of the welding torch adjusting slide 21. When the welding torch driving cylinder 20 is activated, it drives the welding torch adjusting slide 21, along with the welding torch 6, to move radially as a whole. The manual adjustment knob of the welding torch adjusting slide 21 can drive the sliding plate to move slightly in a first direction, thereby finely adjusting the axial position of the welding torch 6 in the first direction to ensure that the tip of the welding wire is precisely aligned with the joint between the locking head 24 and the locking rod 23.

[0038] In this embodiment, the welding torch mechanism further includes a wire feeder 22, which is an automatic wire feeding device fixedly mounted on the movable support 5. The wire feeding tube of the wire feeder 22 is connected to the wire inlet of the welding torch 6, and is used to continuously supply welding wire to the welding torch 6 during the welding process. The wire feeder 22 slides together with the movable support 5 along the first direction, so that the welding wire supply path remains stable and is not affected by the position adjustment of the welding torch mechanism. The wire feeding speed of the wire feeder 22 is adjusted by the welding power supply or an independent controller to match the welding current, so as to ensure the quality of weld formation.

[0039] In this embodiment, the number of locking rod support mechanisms is at least two, and they are spaced apart along the first direction. The number of locking rod support mechanisms is determined according to the length of the locking rod 23. When the length of the locking rod 23 is long, three or more locking rod support mechanisms can be configured. Each locking rod support mechanism is evenly spaced along the first direction to provide multi-point stable support for the long locking rod and prevent the locking rod 23 from bending and deforming due to its own weight, which would affect the welding accuracy.

[0040] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0041] The working process of this device is as follows: Before starting the welding operation, according to the length specifications of the locking rod 23 to be welded, manually loosen the locking bolts of each sliding seat, and slide the two locking rod support mechanisms, the two locking head clamping mechanisms, and the two welding torch mechanisms to their appropriate positions along the first direction. After adjustment, tighten the locking bolts to fix each mechanism.

[0042] The locking rod 23 is placed on the rotating pulley 17 of each locking rod support mechanism, and the outer circumference of the locking rod 23 falls into the V-shaped support space formed by the rotating pulley 17. The extension end of the support cylinder 15 rises, and the rotating pulley 17 and the locking rod 23 are lifted to a preset height through the pulley bracket 16, so that the axis of the locking rod 23 coincides with the rotation axis of the rotating bearing 3 of the locking head clamping mechanism at both ends.

[0043] Two locking heads 24 are placed on the positioning elements 4 of the locking head clamping mechanism at both ends, so that the mating surfaces of the locking heads 24 are in contact with the corresponding end faces of the locking rods 23. The telescopic end of the clamping drive cylinder 13 extends, driving the clamping element 11 to swing around the hinge support 10. The clamping end of the clamping element 11 presses the locking heads 24 against the positioning surface of the positioning element 4. At this time, under the constraint of their respective positioning surfaces, the two locking heads 24 automatically achieve axial concentricity and end face parallelism.

[0044] The telescopic end of the welding torch drive cylinder 20 extends, driving the welding torch adjusting slide 21 and the welding torch 6 to move radially along the locking rod 23. The front end of the welding torch 6 is fed to the joint between the locking head 24 and the locking rod 23. The wire feeder 22 starts, feeding welding wire to the welding torch 6. The welding power is turned on, and the welding torch 6 starts to ignite an arc.

[0045] Simultaneously, the rotating motors 7 of the two locking head clamping mechanisms are synchronously started under the control of the same controller. Through the transmission of gears 8 and gear rings 9, they drive their respective rotating bearing components 3 and the clamped locking heads 24 to rotate at a uniform speed for one revolution. The controller can be a PLC, which sends synchronous pulse commands to the servo drivers of the two rotating motors 7 to ensure that the locking heads 24 at both ends rotate strictly synchronously. When the locking heads 24 rotate, the friction of the contact surface and the initial weld point drive the locking rod 23 to rotate synchronously on the rotating pulley 17. The welding gun 6 completes the continuous welding of the entire circumferential seam during the rotation of the locking heads 24.

[0046] After welding is completed, the welding torch 6 stops feeding wire and extinguishes the arc. The telescopic end of the welding torch drive cylinder 20 retracts, causing the welding torch 6 to retract radially. The rotary motor 7 stops rotating. The telescopic end of the clamping drive cylinder 13 retracts, and the clamping element 11 releases the workpiece. The support cylinder 15 exhausts air, the telescopic end lowers, and the rotating pulley 17 falls. The operator can then remove the welded locking rod assembly.

[0047] After the workpiece is removed, each mechanism is reset to its initial state, ready to enter the next work cycle.

[0048] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] Example 2

[0050] The main difference between this embodiment and Embodiment 1 is that the welding torch driving device adopts a different specific structural form: Specifically, in this embodiment, the welding torch drive device includes a servo motor and a ball screw module. The servo motor is fixedly mounted on the movable support 5, and its output shaft is connected to one end of the ball screw via a coupling. The ball screw is rotatably mounted on the movable support 5 via a bearing housing, and the axis of the ball screw extends radially along the locking rod. The welding torch 6 engages with the ball screw via a screw nut, which slides with a linear guide rail on the movable support 5 and is circumferentially limited. When the servo motor drives the ball screw to rotate, the screw nut drives the welding torch 6 to move precisely radially. Compared with cylinder drive, this structure has higher positioning accuracy and controllability. The feed speed and position of the welding torch 6 can be adjusted online by a controller, making it suitable for applications requiring precise control of the welding start position or multi-layer welding.

[0051] Other structures in this embodiment, such as the locking rod support mechanism and the locking head clamping mechanism, are the same as in Embodiment 1, and their working process and beneficial effects are also the same as in Embodiment 1, so they will not be described again here.

[0052] Example 3

[0053] The main difference between this embodiment and Embodiment 1 is that the outer peripheral surface material of the rotating pulley 17 adopts a different specific form: Specifically, in this embodiment, the outer peripheral surface of the rotating pulley 17 is a smooth metal surface, without polyurethane or rubber coating. This is suitable for applications where the lock bar surface has high hardness, is not easily scratched, and requires protection against polyurethane aging or peeling. Additionally, knurling can be machined on the groove surface of the rotating pulley 17 to increase friction with the lock bar surface, ensuring the lock bar can reliably rotate synchronously with the lock head.

[0054] Other structures in this embodiment, such as the lock clamping mechanism, welding torch mechanism, and rotary drive device, are the same as in Embodiment 1, and their working process and beneficial effects are also the same as in Embodiment 1, so they will not be described again here.

[0055] Example 4

[0056] The main difference between this embodiment and Embodiment 1 is that the lifting drive of the locking rod support mechanism adopts an electric drive method, replacing the support cylinder 15. Specifically, in this embodiment, the support cylinder 15 in the locking rod support mechanism is replaced by an electric push rod. The cylinder end of the electric push rod is fixedly mounted on the support slide 14, and the telescopic end extends vertically upward and is fixedly connected to the pulley bracket 16. The electric push rod is electrically connected to the controller, which precisely controls the extension length of the electric push rod by inputting a set value, thereby precisely adjusting the center height of the rotating pulley 17 so that the locking rod axis is automatically aligned with the rotation axis of the rotating bearing 3. This electric adjustment method can automatically adjust the center height according to the diameter of different specifications of locking rods without manual intervention.

[0057] Other structures in this embodiment, such as the lock clamping mechanism, welding torch mechanism, and rotary drive device, are the same as in Embodiment 1, and their working process and beneficial effects are also the same as in Embodiment 1, so they will not be described again here.

[0058] Example 5

[0059] The main difference between this embodiment and Embodiment 1 is that the positioning element 4 adopts a replaceable structure: Specifically, in this embodiment, the positioning element 4 and the rotating support 3 are detachably fixedly connected by bolts. The positioning element 4 is machined with a positioning surface that matches the outer contour of the lock head, and multiple sets of positioning elements 4 can be pre-made according to the external dimensions of different lock head models. When it is necessary to weld lock rod assemblies of different specifications, only the corresponding positioning element 4 needs to be replaced, without replacing the entire rotating support 3. This structure greatly improves the versatility of the equipment and shortens the changeover time.

[0060] Other structures in this embodiment, such as the locking rod support mechanism, welding gun mechanism, and rotary drive device, are the same as in Embodiment 1, and their working process and beneficial effects are also the same as in Embodiment 1, so they will not be described again here.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic welding machine for car lock cylinders and locking rods, characterized in that, include: Rack (1); A locking rod support mechanism is provided on the frame (1) for supporting the locking rod (23) and allowing the locking rod (23) to rotate about its own axis, the axis of the locking rod (23) extending along a first direction; A lock head clamping mechanism, wherein two lock head clamping mechanisms are arranged at intervals along the first direction on the frame (1), and the lock head clamping mechanism includes: A sliding support (2) is slidably disposed on the frame (1) along the first direction; A rotating bearing member (3) is rotatably disposed on the sliding support (2), and the rotation axis of the rotating bearing member (3) extends along the first direction; A rotary drive device is used to drive the rotary support member (3) to rotate; The positioning element (4) is fixed to the rotating bearing (3) and has a positioning surface that matches the outer contour of the lock head (24); A clamping device is provided on the rotating bearing (3) for pressing the lock head (24) onto the positioning element (4); A welding torch mechanism, wherein a pair of welding torch mechanisms that can slide along the first direction are provided on the frame (1), and the two welding torch mechanisms are respectively provided corresponding to the two locking head clamping mechanisms, and each welding torch mechanism includes: The movable support (5) slides in cooperation with the frame (1) along the first direction; A welding gun (6) is movably disposed on the movable support (5) along the radial direction of the locking rod (23) to be close to or away from the joint between the lock head (24) and the locking rod (23); A welding torch drive device is used to drive the welding torch (6) to move radially along the locking rod.

2. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The rotary drive device includes: A rotating motor (7) is provided on the sliding support (2), and the driving end of the rotating motor (7) is provided with a gear (8); The gear ring (9) is coaxially sleeved on the outer peripheral wall of the rotating bearing (3) and meshes with the gear (8).

3. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The clamping device includes: A hinge support (10) is provided on the positioning element (4); The clamping element (11) is hinged to the hinge support (10) and can swing relative to the positioning element (4); The mounting bracket (12) is located on the side of the rotating support (3) away from the lock head (24); A clamping drive cylinder (13) is provided, the cylinder body of which is hinged to the mounting bracket (12), and the telescopic end is connected to the clamping element (11) to drive the clamping element (11) to swing and press the lock head (24) onto the positioning element (4).

4. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The locking rod support mechanism includes: The support slide (14) slides in cooperation with the frame (1) along the first direction; A support cylinder (15) is provided, the cylinder body of which is disposed on the support slide (14), and a pulley bracket (16) is installed on the telescopic end of the support cylinder (15). A rotating pulley (17) is rotatably mounted on the pulley bracket (16), and the rotation axis of the rotating pulley (17) extends along the first direction; The supporting cylinder (15) is used to drive the rotating pulley (17) to move up and down in a second direction, which is perpendicular to the first direction.

5. The automatic welding machine for car lock cylinders and locking rods according to claim 4, characterized in that, There are two rotating pulleys (17), and a supporting space is formed between the two rotating pulleys (17) for placing the locking rod (23). When the locking rod (23) is placed between the two rotating pulleys (17), it contacts the outer peripheral surfaces of the two rotating pulleys (17) respectively.

6. The automatic welding machine for car lock cylinders and locking rods according to claim 4, characterized in that, The frame (1) is provided with a first slide rail (18) and a second slide rail (19). The first slide rail (18) and the second slide rail (19) both extend along the first direction. The sliding support (2) is slidably engaged with the first slide rail (18). The movable support (5) and the locking rod support mechanism are both slidably engaged with the second slide rail (19).

7. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The welding torch driving device is constructed as a welding torch driving cylinder (20). The cylinder body of the welding torch driving cylinder (20) is disposed on the movable support (5), and the telescopic end of the welding torch driving cylinder (20) is connected to the welding torch (6).

8. The automatic welding machine for car lock cylinders and locking rods according to claim 6, characterized in that, The welding torch driving device also includes a welding torch adjusting slide (21), which is connected to the telescopic end of the welding torch driving cylinder (20). The welding torch (6) is connected to the welding torch adjusting slide (21), and the welding torch adjusting slide (21) is used to adjust the spatial position of the welding torch (6) in the first direction.

9. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The welding gun mechanism also includes a wire feeder (22), which is disposed on the movable support (5) and is used to supply welding wire to the welding gun (6).

10. The automatic welding machine for car lock cylinders and locking rods according to claim 1, characterized in that, The number of locking rod support mechanisms is at least two, and they are spaced apart along the first direction.

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