A rotary welding mechanism

Abstract

The utility model discloses a kind of rotary welding mechanisms, including movable support seat, fixed support seat and rotary drive assembly, movable support seat and fixed support seat are oppositely spaced and interval region constitutes rotary welding cavity, movable support seat is rotatably provided with first end portion clamping fixture, fixed support seat is rotatably provided with second end portion clamping fixture, rotary drive assembly includes rotary power piece, first synchronous wheel, second synchronous wheel and synchronous belt, rotary power piece is connected with the transmission of first synchronous wheel, second synchronous wheel is connected with the transmission of second end portion clamping fixture, synchronous belt is sleeved on first synchronous wheel and second synchronous wheel.This application is by rotary power piece, first synchronous wheel, second synchronous wheel and the rotary drive assembly of synchronous belt composition, avoid electrostatic invasion power piece internal precision electrical components, prevent power piece insulation layer breakdown, winding short circuit and other faults, reduce power piece damage risk.

Description

Technical Field

[0001] This utility model relates to the field of equipment manufacturing and processing technology, and in particular to a rotary welding mechanism. Background Technology

[0002] In the production process of cylindrical products, rotary welding mechanisms are generally used to weld cylindrical materials in the circumferential direction.

[0003] Existing rotary welding mechanisms for rotating cylindrical materials mostly employ a direct-drive method. This involves directly using a motor as the power source, with the motor's output shaft directly connected to a clamping device at the end holding the cylindrical material. The motor's output torque drives the clamped material to rotate synchronously. However, this direct-drive method requires the motor to be coaxial or closely connected. During welding, arc discharge also generates static electricity. This static electricity is conducted directly to the motor's output shaft through the end clamping device, subsequently penetrating the motor's internal stator windings, rotor commutator, and other precision electrical components. Over time, the accumulated static electricity can not only break down the motor's internal insulation layer, causing short circuits and grounding faults, but also attract dust and metal debris from the air, accelerating the wear of motor components. Ultimately, this can lead to serious malfunctions such as motor burnout and drive failure, significantly increasing the equipment's failure rate and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotary welding mechanism.

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

[0006] This utility model provides a rotary welding mechanism, including a movable support base, a fixed support base, and a rotary drive assembly. The movable support base and the fixed support base are arranged at intervals, and the interval area forms a rotary welding cavity. The movable support base is rotatably provided with a first end clamp, and the fixed support base is rotatably provided with a second end clamp. The rotary drive assembly includes a rotary power component, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The rotary power component is drivenly connected to the first synchronous pulley, the second synchronous pulley is drivenly connected to the second end clamp, and the synchronous belt is sleeved on the first synchronous pulley and the second synchronous pulley.

[0007] Furthermore, a drive shaft is laterally arranged on the fixed support base. One end of the drive shaft near the movable support base extends into the rotary welding cavity and is connected to the second end fastener. The other end of the drive shaft away from the movable support base is connected to the second synchronous pulley.

[0008] Furthermore, a passive rotating shaft is laterally arranged on the movable support base, and one end of the passive rotating shaft near the fixed support base extends into the rotary welding cavity and is connected to the first end fastener.

[0009] Furthermore, it also includes a lateral linear module for driving the movable support to move away from or towards the fixed support. The lateral linear module includes a lateral force component, a lateral connecting rod, a lateral slide rail, and a lateral slider. The lateral slider is located at the bottom of the movable support and is slidably connected to the lateral slide rail. The lateral force component is connected to one end of the lateral connecting rod, and the other end of the lateral connecting rod is connected to the lateral slider.

[0010] Furthermore, the side of the first end clamp that contacts one end of the material is provided with a material end contour cavity.

[0011] Furthermore, the side of the second end clamp that contacts the other end of the material is provided with a material end clamping groove.

[0012] Furthermore, it also includes a lifting support assembly, which includes a lifting support power component and a lifting seat plate. The lifting seat plate is located inside the rotary welding cavity, and the lifting support power component is located below the lifting seat plate and connected to the lifting seat plate to drive the lifting seat plate to move up and down.

[0013] Furthermore, the top of the lifting seat plate is provided with a support base plate, and the support base plate is provided with multiple sets of material placement support components spaced apart along the length direction of the material. Each set of material placement support components includes two material contact support blocks spaced apart along the width direction of the material.

[0014] Furthermore, the part of the material contact support block that contacts the material is provided with an elastic contact element.

[0015] Furthermore, it also includes a positioning component, which includes a positioning power component and a positioning telescopic rod. One end of the positioning telescopic rod is connected to the positioning power component. The end of the passive rotating shaft away from the fixed support is provided with a positioning disk. The positioning disk is provided with a plurality of positioning through holes in the circumferential direction. The positioning telescopic rod passes through the positioning through holes to restrict the rotation of the passive rotating shaft.

[0016] The beneficial effects of this utility model compared with the prior art are as follows: A rotary welding mechanism includes a movable support base, a fixed support base, and a rotary drive assembly. The movable support base and the fixed support base are arranged relatively apart, and the interval area forms a rotary welding cavity. The movable support base is rotatably equipped with a first end clamp, and the fixed support base is rotatably equipped with a second end clamp. The rotary drive assembly includes a rotary power component, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The rotary power component is driven by the first synchronous pulley, and the second synchronous pulley is driven by the second end clamp. The synchronous belt is sleeved on the first and second synchronous pulleys. This application, by setting a rotary drive assembly composed of a rotary power component, a first synchronous pulley, a second synchronous pulley, and a synchronous belt, replaces the direct drive method of the prior art with synchronous belt drive. The synchronous belt has certain insulation properties, which can block the path of static electricity generated by welding arc discharge to the rotary power component, avoid static electricity intrusion into the precision electrical components inside the power component, prevent the insulation layer of the power component from breaking down, winding short circuits, and other faults, and reduce the risk of damage to the power component.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a rotary welding mechanism provided for a specific embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the installation of a rotary drive assembly for a rotary welding mechanism provided for a specific embodiment of this utility model;

[0021] Figure 3 A schematic diagram of the transverse linear module of a rotary welding mechanism provided for a specific embodiment of this utility model;

[0022] Figure 4 A schematic diagram of the lifting support assembly of a rotary welding mechanism is provided for a specific embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the installation of a positioning component of a rotary welding mechanism, provided for a specific embodiment of the present invention.

[0024] Figure Labels

[0025] 2. Rotary welding mechanism; 21. Movable support base; 211. First end clamp; 212. Positioning plate; 2121. Positioning through hole; 22. Fixed support base; 221. Second end clamp; 23. Rotary drive assembly; 231. Rotary power component; 232. First synchronous pulley; 233. Second synchronous pulley; 234. Synchronous belt; 24. Lateral linear module; 241. Lateral force component; 242. Lateral connecting rod; 243. Lateral slide rail; 244. Lateral slider; 25. Lifting support assembly; 251. Lifting support power component; 252. Lifting seat plate; 253. Support base plate; 254. Material contact support block; 2541. Elastic contact component; 26. Passive rotating shaft; 27. Active rotating shaft; 28. Positioning assembly; 281. Positioning power component; 282. Positioning telescopic rod; 29. ​​Rotary welding cavity. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] like Figures 1 to 5 As shown, this embodiment of the utility model provides a rotary welding mechanism 2, including a movable support 21, a fixed support 22, and a rotary drive assembly 23. The movable support 21 and the fixed support 22 are arranged at intervals, and the interval area forms a rotary welding cavity 29. The movable support 21 can move towards or away from the fixed support 22 to adapt to materials of different lengths to be welded. The movable support 21 is rotatably provided with a first end clamp 211, and the fixed support 22 is rotatably provided with a second end clamp 221. The rotary drive assembly 23 includes a rotary power component 231, a first synchronous pulley 232, a second synchronous pulley 233, and a synchronous belt 234. The rotary power component 231 is drivenly connected to the first synchronous pulley 232, the second synchronous pulley 233 is drivenly connected to the second end clamp 221, and the synchronous belt 234 is sleeved on the first synchronous pulley 232 and the second synchronous pulley 233.

[0033] The rotating power component 231 is a servo motor, which is fixed to the outside of the fixed support base 22, and the motor output shaft is connected to the first synchronous pulley 232 by a key to achieve transmission. The second synchronous pulley 233 is connected to the second end clamp 221, and the tooth ratio of the second synchronous pulley 233 to the first synchronous pulley 232 is set according to the rotation speed required by the material to be welded; the synchronous belt 234 is made of polyurethane material (this material has certain insulation properties, and also has the advantages of wear resistance and tensile strength), and the tooth profile on its inner side is adapted to the tooth profile of the first synchronous pulley 232 and the second synchronous pulley 233.

[0034] By setting up a rotary drive assembly 23 consisting of a rotary power component 231, a first synchronous pulley 232, a second synchronous pulley 233, and a synchronous belt 234, the synchronous belt 234 is used to replace the direct drive method of the prior art. The synchronous belt 234 has certain insulation properties, which can block the path of static electricity generated by welding arc discharge to the rotary power component 231, prevent static electricity from entering the precision electrical components inside the power component, prevent the insulation layer of the power component from breaking down, winding short circuit and other faults, and reduce the risk of damage to the power component.

[0035] In one embodiment, such as Figure 1 As shown, a drive shaft 27 is laterally arranged on the fixed support 22. The end of the drive shaft 27 near the movable support 21 extends into the rotary welding cavity 29 and is connected to the second end fastener 221. The end of the drive shaft 27 away from the movable support 21 is connected to the second synchronous pulley 233. A passive shaft 26 is laterally arranged on the movable support 21. The end of the passive shaft 26 near the fixed support 22 extends into the rotary welding cavity 29 and is connected to the first end fastener 211.

[0036] The drive shaft 27 has a cylindrical structure and is arranged transversely to the fixed support 22 (i.e., in a direction parallel to the axes of the first end clamp 211 and the second end clamp 221). A stepped surface is machined on the shaft of the drive shaft 27 corresponding to the assembly position of the fixed support 22 to prevent axial movement of the drive shaft 27. A keyway is machined at the end near the movable support 21 for keyed connection with the second end clamp 221, and a keyway is also machined at the end away from the movable support 21 for keyed connection with the second synchronous pulley 233. The type of the two keyways is set according to the specifications of the inner keyways of the matched second end clamp 221 and the second synchronous pulley 233 to ensure no relative slippage during power transmission after connection.

[0037] The fixed support 22 has a through mounting hole along its transverse direction. Two sets of deep groove ball bearings are installed in the mounting hole (the two sets of bearings are arranged axially at intervals to improve the stability of the rotation of the drive shaft 27 and prevent radial wobbling of the shaft). The outer ring of the deep groove ball bearing is interference-fitted with the mounting hole, and the inner ring is interference-fitted with the shaft body of the drive shaft 27. To prevent the deep groove ball bearings from coming out of the mounting hole, bearing end caps are provided at both ends of the mounting hole (the bearing end caps are connected to the fixed support 22 by bolts).

[0038] After the active rotating shaft 27 is inserted into the inner rings of the two sets of deep groove ball bearings, one end of it near the movable support 21 extends from the side of the fixed support 22 toward the rotating welding cavity 29 and extends into the interior of the rotating welding cavity 29; the other end away from the movable support 21 extends from the side of the fixed support 22 away from the rotating welding cavity 29 and is located on the outside of the fixed support 22.

[0039] When the end of the active shaft 27 near the movable support 21 is connected to the second end clamp 221, the center of the second end clamp 221 is provided with a connection hole that matches the active shaft 27. A keyway corresponding to the keyway of the active shaft 27 is machined in the connection hole. After the flat key is embedded in the keyway of the active shaft 27 and the second end clamp 221, the key connection between the two is realized. In order to further ensure the firmness of the connection, an external thread is machined at the end of the active shaft 27. The second end clamp 221 is locked on the active shaft 27 by a nut to prevent relative displacement between the second end clamp 221 and the active shaft 27 during the welding process.

[0040] When the end of the drive shaft 27 away from the movable support 21 is connected to the second synchronous pulley 233, the same key connection method as described above is used: the inner hole of the second synchronous pulley 233 is machined with a keyway, and a flat key is embedded in the keyway between the drive shaft 27 and the second synchronous pulley 233 to realize power transmission; at the same time, a shoulder is provided at the end of the drive shaft 27 (the shoulder can axially position the second synchronous pulley 233 and prevent the second synchronous pulley 233 from moving along the shaft axis), and a retaining ring (the retaining ring is stuck in the annular groove of the drive shaft 27) is used to fix the second synchronous pulley 233 on the side away from the shoulder, so as to ensure that the position of the second synchronous pulley 233 on the drive shaft 27 is stable and to avoid slippage or displacement during transmission.

[0041] The passive rotating shaft 26 has an overall cylindrical structure, and its axis is aligned with the relative spacing direction of the movable support 21 and the fixed support 22, i.e., it is arranged laterally. It is also collinear with the axes of the active rotating shaft 27, the first end clamp 211, and the second end clamp 221 to ensure coaxiality during subsequent material clamping and rotation.

[0042] A keyway is machined at one end of the passive rotating shaft 26 near the fixed support 22 (i.e., the end facing the rotary welding cavity 29). This keyway is used to achieve a key connection with the first end clamp 211. The width and depth of the keyway are designed to match the keyway specifications of the inner hole of the first end clamp 211 to ensure that there is no relative slippage in the power transmission after connection. At the same time, an external thread is machined on the shaft section of the passive rotating shaft 26 near the first end clamp 211 to cooperate with the nut to achieve axial locking of the first end clamp 211 and prevent axial displacement during rotation.

[0043] The movable support 21 has a transverse mounting hole, into which a set of deep groove ball bearings are installed. The outer ring of the bearing is interference-fitted with the mounting hole to ensure that the deep groove ball bearing does not loosen within the mounting hole; the inner ring is interference-fitted with the shaft of the driven shaft 26 to achieve synchronous rotation between the driven shaft 26 and the bearing. To prevent the bearing from coming out of the mounting hole, a bearing end cap is provided on the side of the mounting hole facing the rotary welding cavity 29, and this bearing end cap is fixedly connected to the movable support 21 by bolts. On the other side of the mounting hole (the side opposite to the rotary welding cavity 29), a retaining ring is provided. The retaining ring is engaged in the annular groove of the driven shaft 26 and fits against the inner ring of the deep groove ball bearing, further restricting the axial displacement of the deep groove ball bearing and ensuring the assembly stability of the driven shaft 26 on the movable support 21.

[0044] After the passive rotating shaft 26 passes through the inner ring of the deep groove ball bearing, one end of it near the fixed support 22 extends from the side of the movable support 21 toward the rotating welding cavity 29 and extends into the interior of the rotating welding cavity 29 for connection with the first end fastener 211; the other end away from the fixed support 22 extends from the side of the movable support 21 away from the rotating welding cavity 29.

[0045] The first end clamp 211 has a connecting hole at its center that matches the passive shaft 26. A keyway corresponding to the keyway of the passive shaft 26 is machined within the connecting hole. During assembly, a flat key is inserted into the keyway of the passive shaft 26 and the first end clamp 211 to achieve a keyed connection. This connection method ensures that the first end clamp 211 rotates synchronously with the passive shaft 26, and that power transmission is efficient and slip-free. To further enhance the connection's firmness, the first end clamp 211 is fitted onto the shoulder of the passive shaft 26 (the shoulder is an annular step machined on the passive shaft 26 for axial positioning of the first end clamp 211), and then a nut is screwed into the external thread end of the passive shaft 26.

[0046] The passive rotating shaft 26 is collinear with the active rotating shaft 27, the first end clamp 211, and the second end clamp 221. The passive rotating shaft 26 is stably supported on the movable support base 21 by bearings, effectively preventing radial displacement of the first end clamp 211 due to material clamping force or centrifugal force during rotation. This ensures that the first end clamp 211 and the second end clamp 221 remain coaxial, thereby guaranteeing that the material to be welded does not eccentrically wobble during rotation, reducing deviations at the welding point, and improving welding quality. Furthermore, since the passive rotating shaft 26 is a passively rotating structure, no additional power component is required; rotation is achieved solely through the material's movement. Compared to a separate power component for the passive end, this significantly reduces equipment energy consumption, simplifies equipment structure, and reduces costs.

[0047] In one embodiment, the first end clamp 211 has a material end conforming cavity on the side that contacts one end of the material, and the shape and size of the material end conforming cavity are perfectly adapted to the shape of the end of the material to be clamped. The second end clamp 221 has a material end clamping groove on the side that contacts the other end of the material. The second end clamp 221 is generally disc-shaped, and the material end clamping groove is machined on the side facing the material (i.e., the side that contacts the other end of the material). The design of the material end clamping groove must be adapted to the structural characteristics of the material end.

[0048] By using the first end clamp 211 and the second end clamp 221 together, the material can be clamped and positioned bidirectionally from both ends, avoiding problems such as radial displacement, falling or axial movement of the material during rotation.

[0049] In one embodiment, such as Figure 3 As shown, the rotary welding mechanism 2 also includes a transverse linear module 24 for driving the movable support 21 to move away from or closer to the fixed support 22. The transverse linear module 24 includes a transverse force member 241, a transverse connecting rod 242, a transverse slide rail 243, and a transverse slider 244. The transverse slider 244 is located at the bottom of the movable support 21 and is slidably connected to the transverse slide rail 243. The transverse force member 241 is connected to one end of the transverse connecting rod 242, and the other end of the transverse connecting rod 242 is connected to the transverse slider 244.

[0050] The transverse slide rail 243 has an overall elongated structure and is arranged along the moving direction of the movable support 21 (i.e., laterally, parallel to the axes of the active rotating shaft 27 and the passive rotating shaft 26). It is rigidly connected to the equipment frame by bolts. The top of the transverse slide rail 243 is machined with a T-slot or dovetail groove, which provides lateral constraint to the transverse slider 244, preventing lateral displacement of the slider during sliding. The bottom of the transverse slider 244 has a protrusion that matches the T-slot or dovetail groove of the transverse slide rail 243; the top of the transverse slider 244 is fixedly connected to the bottom of the movable support 21 by bolts.

[0051] The lateral moving force component 241 is arranged below the fixed support 22. The moving force component is a cylinder, fixed to the equipment frame, with the piston rod's axis parallel to the length direction of the lateral sliding rail 243. One end of the cylinder's piston rod is keyed to the lateral moving connecting rod 242, and the other end of the connecting rod 242 extends towards the movable support 21 and is fixedly connected to the lateral sliding block 244. The lateral moving force component 241's extension and retraction movement allows the movable support 21 to move away from or towards the fixed support 22.

[0052] In one embodiment, such as Figure 4 As shown, the rotary welding mechanism 2 also includes a lifting support assembly 25, which includes a lifting support power component 251 and a lifting seat plate 252. The lifting seat plate 252 is located inside the rotary welding cavity 29. The lifting support power component 251 is located below the lifting seat plate 252 and is connected to the lifting seat plate 252 to drive the lifting seat plate 252 to move up and down.

[0053] The core function of the lifting support assembly 25 is to provide temporary support for the material to be welded. Specifically, after the material to be welded is transferred into the rotary welding cavity 29 by the gripper mechanism, the movable support seat 21 needs to be driven to move towards the fixed support seat 22 by the transverse linear module 24. This will cause the first end clamp 211 to move closer to the second end clamp 221, so as to push the material to be welded gradually closer to the second end clamp 221 and finally cooperate with the second end clamp 221 to achieve clamping and fixing of the material to be welded. During this pushing process, if the gripper mechanism is still in the state of clamping the material to be welded, it will not be conducive to pushing. Therefore, during pushing, the gripper mechanism needs to be removed and the lifting support assembly 25 needs to form a stable support for the bottom of the material to be welded to ensure that the material to be welded always maintains the preset posture during the pushing process, and avoids the precise clamping and cooperation between the first end clamp 211 and the second end clamp 221 due to the deviation of the material position.

[0054] Specifically, the lifting support power component 251 is an electric push rod, and an electric push rod with corresponding rated thrust is selected according to the total weight of the lifting seat plate 252 and the material.

[0055] The number of electric push rods can be set to multiple groups to achieve multi-point synchronous support and avoid uneven force on the seat plate causing tilting. The fixed end of the lifting support power component 251 is rigidly connected to the equipment frame by bolts, and the output end of the lifting support power component 251 is threadedly connected to the connecting ear plate at the bottom of the seat plate.

[0056] In one embodiment, such as Figure 4As shown, the top of the lifting seat plate 252 is provided with a support base plate 253. The support base plate 253 is provided with multiple sets of material placement support components spaced apart along the length direction of the material. Each set of material placement support components includes two material contact support blocks 254 spaced apart along the width direction of the material. The part of the material contact support block 254 that contacts the material is provided with an elastic contact element 2541.

[0057] The support base plate 253 has a rectangular structure. The bottom of the support base plate 253 is fixedly connected to the top of the lifting seat plate 252 by bolts. The material placement support component includes two material contact support blocks 254 arranged at intervals along the width direction of the material. Each set of support components corresponds to supporting one cross-section of the material. Multiple sets of support components are arranged at intervals along the length direction of the material (e.g., one set is set at a certain interval, the specific interval is determined according to the rigidity of the material, and the interval needs to be reduced and support points increased for materials with poor rigidity).

[0058] The material contact support block 254 has a block-like structure, and its top is machined with a support surface that matches the shape of the material. Each material contact support block 254 has an external thread machined on its bottom, which connects to a pre-set threaded hole on the support base plate 253 through the thread, thereby fixing the support block to the support base plate 253.

[0059] The material contact support block 254 has an elastic contact element 2541 at the point of contact with the material (i.e., the support surface). The elastic contact element 2541 can be sheet-like or hemispherical in shape, and is made of silicone. The elastic contact element 2541 is adhered to the support surface of the support block using a high-strength adhesive. The elastic contact element 2541 enhances the stability of the material support while preventing the material from being scratched.

[0060] In one embodiment, such as Figure 5 As shown, the rotary welding mechanism 2 also includes a positioning component 28. The positioning component 28 includes a positioning power component 281 and a positioning telescopic rod 282. One end of the positioning telescopic rod 282 is connected to the positioning power component 281. The passive rotating shaft 26 is provided with a positioning disk 212 at the end away from the fixed support 22. The positioning disk 212 is provided with a plurality of positioning through holes 2121 in the circumferential direction. The positioning telescopic rod 282 passes through the positioning through holes 2121 to restrict the rotation of the passive rotating shaft 26.

[0061] The positioning disk 212 has a circular flat plate structure. The center of the positioning disk 212 has an assembly hole that matches the passive rotating shaft 26. A keyway is machined in the assembly hole. The positioning disk 212 is fixed to the end of the passive rotating shaft 26 away from the fixed support 22 by a key connection (the key connection can ensure that the positioning disk 212 and the passive rotating shaft 26 rotate synchronously without relative sliding). At the same time, one side of the positioning disk 212 is in contact with the shoulder of the passive rotating shaft 26 (the shoulder axially positions the positioning disk 212), and the other side is locked by a nut (the nut is connected to the external thread at the end of the passive rotating shaft 26).

[0062] The positioning disk 212 has several positioning through holes 2121 arranged circumferentially. The positioning through holes 2121 are evenly distributed along the circumference of the positioning disk 212, and all the positioning through holes 2121 have the same diameter, which is adapted to the outer diameter of the positioning telescopic rod 282 (to ensure that the positioning telescopic rod 282 can be smoothly inserted into the through hole, and there is no obvious gap after insertion, so as to avoid positioning loosening); the depth of the positioning through holes 2121 extends through the thickness of the positioning disk 212.

[0063] The positioning power component 281 is fixed on the movable support frame. The positioning power component 281 is a cylinder, and the axis of the cylinder is perpendicular to the radial direction of the positioning plate 212 (to ensure that when the positioning telescopic rod 282 extends, it can be inserted into the positioning through hole 2121 along the radial direction of the positioning plate 212 to achieve precise positioning).

[0064] The positioning telescopic rod 282 has an overall cylindrical structure. One end of it is connected to the piston rod of the positioning power component 281 (cylinder) by a thread. The other end of the telescopic rod (the end that is inserted into the positioning through hole 2121) is machined with a tapered guide head, which makes it easy for the telescopic rod to be quickly aligned with the positioning through hole 2121 and reduces the difficulty of insertion.

[0065] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A rotary welding mechanism, characterized in that, The device includes a movable support base, a fixed support base, and a rotary drive assembly. The movable support base and the fixed support base are arranged at intervals, and the interval area forms a rotary welding cavity. The movable support base is rotatably provided with a first end clamp, and the fixed support base is rotatably provided with a second end clamp. The rotary drive assembly includes a rotary power component, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The rotary power component is driven by the first synchronous pulley, the second synchronous pulley is driven by the second end clamp, and the synchronous belt is sleeved on the first synchronous pulley and the second synchronous pulley.

2. The rotary welding mechanism according to claim 1, characterized in that, A drive shaft is laterally arranged on the fixed support base. One end of the drive shaft near the movable support base extends into the rotary welding cavity and is connected to the second end fastener. The other end of the drive shaft away from the movable support base is connected to the second synchronous pulley.

3. The rotary welding mechanism according to claim 1, characterized in that, A passive rotating shaft is horizontally arranged on the movable support base. One end of the passive rotating shaft near the fixed support base extends into the rotary welding cavity and is connected to the first end fastener.

4. The rotary welding mechanism according to claim 1, characterized in that, It also includes a lateral linear module for driving the movable support to move away from or towards the fixed support. The lateral linear module includes a lateral force component, a lateral connecting rod, a lateral slide rail, and a lateral slider. The lateral slider is located at the bottom of the movable support and is slidably connected to the lateral slide rail. The lateral force component is connected to one end of the lateral connecting rod, and the other end of the lateral connecting rod is connected to the lateral slider.

5. A rotary welding mechanism according to claim 1, characterized in that, The first end fastener has a material end contour cavity on the side that contacts one end of the material.

6. A rotary welding mechanism according to claim 5, characterized in that, The second end clamp has a material end groove on the side that contacts the other end of the material.

7. A rotary welding mechanism according to claim 1, characterized in that, It also includes a lifting support assembly, which includes a lifting support power component and a lifting seat plate. The lifting seat plate is located inside the rotary welding cavity. The lifting support power component is located below the lifting seat plate and is connected to the lifting seat plate to drive the lifting seat plate to move up and down.

8. A rotary welding mechanism according to claim 7, characterized in that, The top of the lifting seat plate is provided with a support base plate, and the support base plate is provided with multiple sets of material placement support components spaced apart along the length direction of the material. Each set of material placement support components includes two material contact support blocks spaced apart along the width direction of the material.

9. A rotary welding mechanism according to claim 8, characterized in that, The part of the material contact support block that contacts the material is provided with an elastic contact element.

10. A rotary welding mechanism according to claim 3, characterized in that, It also includes a positioning component, which includes a positioning power component and a positioning telescopic rod. One end of the positioning telescopic rod is connected to the positioning power component. The end of the passive rotating shaft away from the fixed support is provided with a positioning plate. The positioning plate is provided with a plurality of positioning through holes in the circumferential direction. The positioning telescopic rod passes through the positioning through holes to restrict the rotation of the passive rotating shaft.

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