A multi-process parallel welding equipment

Abstract

This application relates to a multi-process parallel welding equipment, belonging to mechanical welding technology. It includes a frame, a rotatable indexing disc mounted on the frame, and at least two sets of welding fixing mechanisms mounted on the indexing disc. The indexing disc can drive each set of welding fixing mechanisms to simultaneously switch between a fixed position and a welding position. Each welding fixing mechanism includes a bracket fixed to the indexing disc, a fixed seat rotatably mounted on the bracket and capable of rotating at a fixed angle, a clamping component, and an auxiliary clamping component. The fixed seat has a positioning part and a clearance opening. The positioning part allows for the positioning and placement of the sub-parts to be welded, with the welding joint exposed in the clearance opening. The clamping component locks the sub-parts in place, and the auxiliary clamping component enhances the welding stability between the sub-parts. The indexing disc drives each set of welding fixing mechanisms to simultaneously switch between the fixed position and the welding position, enabling parallel clamping and welding operations and improving the overall production efficiency of mass production.

Description

Technical Field

[0001] This application relates to the field of mechanical welding technology, and in particular to a multi-process parallel welding device. Background Technology

[0002] In fields such as engineering machinery, auto parts, and new energy structural components, a large number of load-bearing structural components and connecting structural components are formed by welding multiple sub-parts together. Welding is a process in the processing and manufacturing of such parts.

[0003] In related technologies, fixed welding fixtures are commonly used for welding multiple sub-parts. These fixtures are equipped with a flip-up fixed jig and a clamping mechanism. The fixed jig has a positioning structure that matches the sub-parts to be welded. During the operation, the operator first places the multiple sub-parts to be welded into the positioning structure to complete the initial alignment. The clamping mechanism then locks and fixes the sub-parts onto the fixed jig for clamping. Welding is first performed on the front side where the sub-parts meet. After the front side welding is completed, the clamping mechanism is released, and the fixed jig is flipped over manually or with the help of a robotic arm. Then, welding is performed on the back side where the sub-parts meet. After both sides welding is completed, the jig is removed and the individual part is processed.

[0004] However, the welding process requires complete clamping, flipping, and unclamping, and a large amount of time is spent on non-welding auxiliary processes, resulting in a long production cycle for individual parts and reduced production efficiency during mass production. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a multi-process parallel welding device.

[0006] This application provides a multi-process parallel welding equipment with the following technical solution: It includes a frame, an indexing disc rotatable around its own axis, and at least two sets of welding fixing mechanisms. The indexing disc is rotatably mounted on the frame, and at least two sets of welding fixing mechanisms are mounted on the indexing disc. The indexing disc drives each set of welding fixing mechanisms to synchronously switch between a fixed position and a welding position. Each welding fixing mechanism includes a support, a fixing seat, a clamping assembly, and an auxiliary clamping assembly. The support is fixed to the indexing disc, and the fixing seat is rotatably mounted on the support. The initial... The plane is parallel to the surface of the indexing disc. The fixed seat can be rotated at a certain angle relative to the bracket. The fixed seat is provided with several sets of positioning parts for positioning the sub-parts to be welded and clearance openings corresponding to each set of positioning parts. The clearance openings pass through the fixed seat, and the welding joints of all sub-parts are exposed at the clearance openings. The clamping assembly is provided on the bracket and is used to lock and fix the sub-parts to the fixed seat. The auxiliary clamping assembly is provided on the bracket and is used to enhance the welding stability of the sub-parts.

[0007] By adopting the above technical solution, the indexing disc, which can rotate around its own axis, is rotatably mounted on the frame. This allows at least two sets of welding fixing mechanisms to simultaneously switch between the fixing station and the welding station, enabling the assembly, positioning, and clamping of parts and welding operations to be carried out simultaneously at different stations. This reduces the production waiting time for individual parts. In the welding fixing mechanism, the bracket is fixed to the indexing disc, and the initial plane of the fixing seat, rotatably mounted on the bracket, is parallel to the surface of the indexing disc, providing a stable positioning and clamping reference for the sub-parts to be welded. The fixing seat can rotate at a certain angle relative to the bracket. Several sets of positioning parts on the fixing seat enable precise positioning of the sub-parts to be welded. Each positioning part corresponds to a specific positioning part and passes through the clearance opening of the fixing seat, allowing all sub-parts to be precisely positioned. All welding joints of the parts are exposed within the work area, providing ample operating space for welding the entire range of the parts. The clamping components on the frame can lock and fix the positioned sub-parts to the fixed base. The auxiliary clamping components on the bracket can enhance the welding stability of the sub-parts, ensuring that the parts maintain a stable clamping and positioning state during the rotation of the fixed base. After welding at a certain angle, the parts can be rotated at a fixed angle by the fixed base to continue welding. The above process shortens the production cycle of a single part. In the process of mass production, the continuous flow of multiple parts can be achieved through the cyclical switching of multiple welding and fixing mechanisms, improving the overall production efficiency of mass production.

[0008] Preferably, the welding fixing mechanism further includes a first drive motor, which is connected to the fixing seat in a transmission manner. The first drive motor is fixedly mounted on the bracket. The first drive motor is used to drive the fixing seat to rotate 180 degrees relative to the bracket. A limiting member is provided on the side surface of the bracket facing the fixing seat. A clearance part is provided on the fixing seat corresponding to the position of the limiting member. When the fixing seat is in the first welding position without rotation, the limiting member passes through the clearance part. When the fixing seat is rotated to the second welding position with a rotation of 180 degrees, the side surface of the fixing seat near the bracket abuts against the top of the limiting member.

[0009] By adopting the above technical solution, the first drive motor fixedly mounted on the bracket is connected to the fixed seat and can drive the fixed seat to rotate 180 degrees relative to the bracket, realizing the flipping action in the double-sided welding process of the part. The limiting member set on the side surface of the bracket facing the fixed seat is adapted to cooperate with the corresponding avoidance part set on the fixed seat. When the fixed seat is in the first welding position before it is flipped, the limiting member passes through the avoidance part and can provide circumferential limit for the initial position of the fixed seat. When the fixed seat is flipped to the second welding position of 180 degrees, the side surface of the fixed seat near the bracket abuts against the top of the limiting member, which can provide rigid support and flipping limit for the fixed seat in the position, and constrain the flipping stroke of the fixed seat.

[0010] Preferably, the clamping assembly includes several sets of locking members that cooperate with the fixed base and clamping members fitted on the locking members, wherein the clamping members can slide along the axial direction of the locking members.

[0011] By adopting the above technical solution, several sets of locking parts that cooperate with the fixed base and pressing parts fitted on the locking parts can slide along the axial direction of the locking parts. They can move away from the fixed base during the loading operation of the sub-parts, providing sufficient operating space for the sub-parts to be placed into the positioning part. After the sub-parts are positioned and aligned, they can move towards the fixed base with the transmission action of the locking parts to achieve pressing and fixing of the sub-parts.

[0012] Preferably, it also includes an automatic locking device, which is disposed on the frame and located outside the indexing disc. The automatic locking device is used to perform a constant torque tightening operation on the locking component.

[0013] By adopting the above technical solution, the automatic locking device can perform a constant torque tightening operation on the locking parts on the welding fixing mechanism of the indexing disc when it switches to the corresponding station. The automatic locking device does not rotate synchronously with the indexing disc. By performing torque tightening operation on the locking parts, the automatic locking device can ensure the consistency of the tightening torque of each group of locking parts, improve the uniformity and stability of the clamping force during the clamping of sub-parts, and ensure the alignment accuracy of the welding part of the sub-parts. The automatic locking device can form a timing coordination with the station switching action of the indexing disc to complete the standardized tightening operation of the locking parts at the fixed station. The operation process can be carried out synchronously with the welding operation at the welding station, reducing the clamping operation time of a single part.

[0014] Preferably, the automatic locking device includes a three-axis linear displacement drive, a second drive motor, and a tightening component. The second drive motor is disposed in the Z-axis direction of the three-axis linear displacement drive, and the second drive motor is connected to the tightening component in a transmission manner. The end of the tightening component is adapted to the locking component.

[0015] By adopting the above technical solution, the three-axis linear displacement drive can drive the second drive motor and the tightening component to complete the precise displacement adjustment of the X, Y, and Z axes. The second drive motor is set in the Z-axis direction of the three-axis linear displacement drive and can be adapted to the axial tightening operation direction of the locking component, providing a stable rotational power input for the tightening action. The second drive motor is connected to the tightening component, which can stably transmit the rotational power to the tightening component. The end of the tightening component is adapted to the locking component, and can form a stable transmission cooperation with the locking component to drive the locking component to complete the rotational tightening operation. Through the displacement adjustment of the three-axis linear displacement drive, it can adapt to the tightening operation of multiple sets of locking components with different arrangements on the fixed base, reducing the time of manual tightening operation.

[0016] Preferably, the locking member is a connecting bolt, which is threaded with the fixing seat. The head of the connecting bolt is provided with a torque interface adapted for automatic tightening. The end of the tightening member is adapted to the shape of the torque interface. The clamping member has a limit groove corresponding to the position of the connecting bolt. When the connecting bolt is threaded with the fixing seat to a preset clamping stroke, the end face of the head of the connecting bolt away from the torque interface abuts against the groove wall of the limit groove.

[0017] By adopting the above technical solution, the connecting bolt, which serves as the locking component, forms a threaded engagement with the fixed seat. Its rotational motion can be converted into axial linear displacement. The torque interface at the head of the connecting bolt, adapted for automatic tightening, matches the end shape of the tightening component, allowing for a stable transmission engagement with the tightening component of the automatic locking device. This ensures the consistency of the connecting bolt's rotational motion. The limiting groove on the clamping component, corresponding to the position of the connecting bolt, allows the end face of the connecting bolt facing away from the torque interface to stably abut against the groove wall when the connecting bolt and fixed seat are threaded together to a preset clamping stroke. This transmits the axial thrust of the connecting bolt to the clamping component, driving the clamping component to complete the clamping displacement along the axial direction of the locking component, ensuring a tight fit between the clamping component and the sub-part to be welded.

[0018] Preferably, a visual positioning camera is further provided in the Z-axis direction of the three-axis linear displacement drive, the detection end of the visual positioning camera is facing the locking member, and the visual positioning camera is used to identify the position of the locking member.

[0019] By adopting the above technical solution, a vision positioning camera set in the Z-axis direction of the three-axis linear displacement drive component with its detection end facing the locking component can synchronously complete displacement adjustment with the Z-axis of the three-axis linear displacement drive component. Before the automatic locking device performs the tightening operation, it can accurately identify the position of the locking component, compensate for the positioning deviation caused by the indexing disc rotation switching station, the cumulative error during the clamping process, and the position deviation during the pre-installation process of the locking component, improve the coaxiality of the tightening component and the locking component, and ensure the accuracy and operational stability of the automatic locking device's tightening operation.

[0020] Preferably, an anti-rotation guide post is fixedly provided on the fixed base, the axial direction of the anti-rotation guide post is consistent with the axial direction of the locking member, the anti-rotation guide post passes through the clamping member, and the clamping member can slide along the axial direction of the anti-rotation guide post.

[0021] By adopting the above technical solution, the anti-rotation guide post set on the fixed seat passes through the clamping member, and the axial direction of the anti-rotation guide post is consistent with the axial direction of the locking member. This can restrict the circumferential rotational freedom of the clamping member, and only retain the sliding freedom of the clamping member along the axial direction of the locking member. During the tightening operation performed by the rotation of the locking member, the circumferential rotation of the clamping member is constrained.

[0022] Preferably, the auxiliary clamping assembly includes a clamping cylinder and a contour clamping member. The contour clamping member is adapted to one of the sub-parts. The contour clamping member is fixedly mounted on the piston rod of the clamping cylinder. The clamping cylinder is equipped with an air valve, which is connected to the internal pipeline of the clamping cylinder.

[0023] By adopting the above technical solution, the clamping cylinder provides power output for the auxiliary clamping operation of the sub-parts to be welded. The air valve connected to the internal pipeline of the clamping cylinder can control the air intake and exhaust of the clamping cylinder. It supports manual start-up, shutdown and operation status control of the clamping cylinder through the air valve, which is suitable for the operation requirements of manual operation scenarios and can also support the operation requirements of automated scenarios. The piston rod of the clamping cylinder can directly complete the extension and retraction action, directly driving the contour clamping component to complete the clamping and release operation of the corresponding sub-parts. The contour clamping component is adapted to one of the sub-parts to be welded, and the contour clamping component is fixedly set on the piston rod of the clamping cylinder. It can complete synchronous extension and retraction displacement with the piston rod of the clamping cylinder. When the piston rod of the clamping cylinder extends, the contour clamping component can form a stable fit with the corresponding sub-part, apply a stable clamping force to the corresponding sub-part, keep the welding joints between multiple sub-parts in a tight fit, improve the positional stability of the welding joints of the sub-parts, and reduce the displacement deviation of the sub-parts during the welding operation.

[0024] Preferably, it also includes a welding robot, which is fixedly mounted on the frame and whose working range covers the welding station on the indexing disc.

[0025] By adopting the above technical solution, the welding robot, which is fixedly installed on the frame, covers the welding station on the indexing disc. After the part that has been positioned and clamped by the indexing disc is switched to the welding station, the robot can perform automated welding operations on the part to be welded. It can coordinate with the part assembly, positioning, clamping and locking operations at the fixed station on the indexing disc to achieve parallel processing of part clamping and welding operations, reduce the production waiting time of a single part, and at the same time, it can cooperate with the 180-degree rotation of the fixed base to complete the continuous welding operation of the part to be welded between the front and back parts.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. A rotatable indexing disc is mounted on the frame and can drive at least two sets of welding and fixing mechanisms to simultaneously switch between the fixing station and the welding station. This allows the assembly, positioning, clamping, and welding operations of parts to be carried out simultaneously at different stations, reducing the production waiting time for individual parts. In the process of mass production, the continuous flow of multiple parts can be achieved through the cyclical switching of multiple sets of welding and fixing mechanisms, thereby improving the overall production efficiency of mass production. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0028] Figure 2This is a schematic diagram of the welding fixing mechanism in the embodiments of this application.

[0029] Figure 3 This is a schematic diagram of the welding fixing mechanism in the embodiments of this application.

[0030] Figure 4 This is a cross-sectional view of the fixing seat and clamping assembly in an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the welding fixing mechanism and automatic locking device in the embodiments of this application.

[0032] Figure 6 This is a schematic diagram of the automatic locking device in the embodiments of this application.

[0033] Figure 7 This is a schematic diagram of the welding fixing mechanism in the embodiments of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Indexing disc; 3. Welding fixing mechanism; 31. Bracket; 311. Limiting component; 32. Fixing seat; 321. Positioning part; 322. Clearance opening; 323. Anti-rotation guide post; 324. Clearance part; 33. Clamping assembly; 331. Locking component; 332. Clamping component; 3321. Limiting groove; 34. Auxiliary clamping assembly; 341. Clamping cylinder; 3411. Air valve; 342. Contouring clamping component; 3421. Contouring groove; 35. First drive motor; 4. Welding robot; 41. Welding torch; 5. Automatic locking device; 51. Three-axis linear displacement drive component; 52. Second drive motor; 53. Tightening component; 54. Visual positioning camera. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a multi-process parallel welding device, referring to... Figure 1 The equipment includes a frame 1, an indexing disc 2, and at least two sets of welding fixing mechanisms 3. The frame 1 serves as the supporting foundation for the welding equipment. The indexing disc 2 is driven to rotate on the frame 1 by a drive motor. The axis of the indexing disc 2 extends vertically. The indexing disc 2 can rotate around its own axis at a fixed angle under the drive of an external drive motor to achieve switching between different workstations. The surface of the indexing disc 2 is horizontally set.

[0037] Furthermore, the number of welding fixing mechanisms 3 is at least two. In this embodiment, two sets are used as an example for explanation. The two sets of welding fixing mechanisms 3 are symmetrically arranged at both ends of the diameter of the indexing disk 2. The indexing disk 2 drives the two sets of welding fixing mechanisms 3 to switch synchronously between the fixed station and the welding station. When one set of welding fixing mechanisms 3 is in the fixed station, the operator can perform the positioning and loading of sub-parts. At the same time, the other set of welding fixing mechanisms 3 has rotated to the welding station to perform welding operations on the parts in the station. Through this parallel operation method, the total production time of a single part on the equipment is shortened.

[0038] Reference Figure 2 Furthermore, each welding fixing mechanism 3 includes a bracket 31, a fixing seat 32, a clamping assembly 33, and an auxiliary clamping assembly 34. The bracket 31 is fixedly connected to the surface of the indexing disc 2 and rotates synchronously with the indexing disc 2. The fixing seat 32 is rotatably mounted on the bracket 31, and the axis of rotation of the fixing seat 32 is parallel to the surface of the indexing disc 2. In the initial unflipped state, the main plane of the fixing seat 32 is parallel to the surface of the indexing disc 2. At this time, the fixing seat 32 is in a horizontal position, which makes it convenient for the operator to place the sub-parts into the positioning from above. The fixing seat 32 can be flipped at a certain angle relative to the bracket 31, specifically 180 degrees, to meet the requirements of welding both sides of the part.

[0039] Reference Figure 3 Furthermore, the fixed base 32 is provided with two sets of positioning parts 321, which can simultaneously position two sets of parts. The specific shape of the positioning part 321 is designed according to the local outer contour of the sub-part to be welded, such as positioning boss, positioning groove, positioning pin hole, etc., to ensure the accurate alignment of the sub-part on the fixed base 32. In this embodiment, the positioning part 321 is set as a positioning groove. The fixed base 32 is also provided with two clearance openings 322, which penetrate through the thickness direction of the fixed base 32. Each clearance opening 322 is correspondingly set with a set of positioning parts 321. When the sub-part is in place through the positioning part 321, the welding parts to be welded between the sub-parts are exposed within the area enclosed by the clearance openings 322, thereby providing sufficient working space for welding, so that the welding parts to be welded between the sub-parts can be fully welded without being blocked by the fixed base 32.

[0040] Reference Figure 4Correspondingly, the clamping assembly 33 is used to clamp and lock the positioned sub-parts onto the fixed seat 32. The clamping assembly 33 includes several sets of locking members 331 and clamping members 332 fitted onto the locking members 331. In this embodiment, since the fixed seat 32 is provided with two sets of positioning parts 321, there are two sets of locking members 331 and clamping members 332 fitted onto the locking members 331. The locking members 331 are connecting bolts, and the threaded part of the connecting bolts forms a threaded engagement with the fixed seat 32. The clamping member 332 is a long strip-shaped pressure plate. The locking member 331 is located in the middle of the clamping member 332. The screw of the connecting bolt passes through the clamping member 332 and is screwed into the fixed seat 32. The clamping member 332 can slide along the axial direction of the locking member 331. When the locking member 331 is in a pre-loosened state, the clamping member 332 can be moved away under the action of manual external force. The clamping member 332 moves away from the fixed base 32 to make room for the loading of the sub-part. The clamping member 332 is provided with a limiting groove 3321 corresponding to the insertion position of the locking member 331. After the sub-part is positioned, the head end face of the connecting bolt is pressed against the groove wall of the limiting groove 3321 by tightening the connecting bolt, which pushes the clamping member 332 to move closer to the fixed base 32. Finally, the clamping surface of the clamping member 332 is pressed against the upper surface of the sub-part to achieve clamping and fixing. At the same time, an anti-rotation guide post 323 is also fixedly provided on the fixed base 32. The circumferential direction of the anti-rotation guide post 323 is parallel to the axial direction of the locking member 331. The anti-rotation guide post 323 extends vertically upward and penetrates the clamping member 332. The clamping member 332 can slide smoothly along the axial direction of the anti-rotation guide post 323 and the locking member 331 at the same time, but the circumferential rotation freedom of the clamping member 332 is restricted.

[0041] Reference Figure 5 and Figure 6 Furthermore, this embodiment also includes an automatic locking device 5, which is independently installed on the frame 1 and located on the outer side of the indexing disc 2 corresponding to the fixed work position area. It does not rotate with the indexing disc 2. The automatic locking device 5 includes a three-axis linear displacement drive 51, a second drive motor 52, and a tightening component 53. The three-axis linear displacement drive 51 is composed of an X-axis module, a Y-axis module, and a Z-axis drive cylinder, which can realize precise three-axis displacement adjustment in a spatial rectangular coordinate system. The second drive motor 52 is fixedly installed on the Z-axis drive cylinder. The output shaft of the second drive motor 52 faces downward and is coaxially connected to the tightening component 53. The head of the connecting bolt is provided with a torque interface. The end shape of the tightening component 53 is adapted to the shape of the torque interface, such as an internal hexagonal interface or a Torx interface.

[0042] Simultaneously, driven by the three-axis linear displacement drive 51, the tightening component 53 moves to directly above the connecting bolt and descends. The end of the tightening component 53 is inserted into the torque interface. The second drive motor 52 starts and applies a preset torque value to complete the automatic tightening of the connecting bolt. To ensure the precise docking of the tightening component 53 and the torque interface, a vision positioning camera 54 is also installed on the Z-axis drive cylinder of the three-axis linear displacement drive 51. The vision positioning camera 54 is set as a CCD positioning camera. The lens of the vision positioning camera 54 is vertically downward and facing the head of the connecting bolt. The coordinate position of the connecting bolt is identified by the image recognition algorithm to compensate for the position deviation caused by the rotation or clamping of the indexing disc 2, ensuring that the tightening component 53 and the torque interface are accurately docked.

[0043] Reference Figure 7 Furthermore, the auxiliary clamping assembly 34 is mounted on the bracket 31 to enhance the docking stability of sub-parts during the welding process, especially for long or rigid sub-parts, ensuring that the welding parts between sub-parts do not misalign during flipping and welding. The auxiliary clamping assembly 34 includes a clamping cylinder 341 and a contour clamping member 342. There are two contour clamping members 342, corresponding to two sets of positioning parts 321. The cylinder body of the clamping cylinder 341 is fixed to the side of the bracket 31, and the piston rod of the clamping cylinder 341 is arranged horizontally towards the part to be welded. Each contour clamping member 342 adopts a contour groove 3421 that is adapted to the outer surface of a certain sub-part and is fixed to the end of the piston rod of the clamping cylinder 341. A manually controlled air valve 3411 is provided in the air circuit of the clamping cylinder 341. The air valve 3411 has air intake, air exhaust and locking functions.

[0044] Meanwhile, this auxiliary clamping assembly 34 can be adapted to two switchable control modes. One is the manual air valve 3411 control mode: the air valve 3411 is manually operated, compressed air enters the rear chamber of the clamping cylinder 341 to push the piston rod to extend, the contour groove 3421 is inserted and engaged with the corresponding sub-part, and is pressed against the side or end of the corresponding sub-part, further clamping and fixing the docking parts of multiple sub-parts, keeping them in a close fit. During the welding process and the rotation of the fixing seat 32, the auxiliary clamping assembly 34 continues to maintain the clamping state until the welding is completed and it is manually released. The other is the electric control mode: the piston rod of the clamping cylinder 341 directly completes the extension and retraction action, directly driving the contour clamping component 342 to complete the clamping and releasing operation of the corresponding sub-part.

[0045] Furthermore, to achieve the flipping welding of the parts, the welding fixing mechanism 3 also includes a first drive motor 35. The first drive motor 35 is a servo motor or a stepper motor. The first drive motor 35 is fixed to the back or side of the bracket 31. The output shaft of the first drive motor 35 is connected to the fixed seat 32. The first drive motor 35 can drive the fixed seat 32 to rotate 180 degrees relative to the bracket 31. A limit member 311 is provided on the side surface of the bracket 31 facing the fixed seat 32. The limit member 311 has a cylindrical structure. The fixed seat 32 has a corresponding... The position of the limiting member 311 is provided with a clearance part 324, which is a notch. When the fixed seat 32 is in the initial first welding position, i.e., in the unflipped state, the limiting member 311 passes into the clearance part 324, which can provide circumferential limitation for the initial position of the fixed seat 32. When the fixed seat 32 is flipped to the second welding position of 180 degrees, the side surface of the fixed seat 32 near the bracket 31 abuts against the top of the limiting member 311, which can provide rigid support and flipping limit for the fixed seat 32 in the flipped position, and constrain the flipping stroke of the fixed seat 32.

[0046] Reference Figure 1 Furthermore, it also includes a welding robot 4, which is fixedly mounted on the frame 1. It is usually a six-axis articulated industrial robot. The welding robot 4 is equipped with a welding gun 41 at its end. The working radius of the welding robot 4 covers the welding station area on the indexing disk 2. When a set of welding fixing mechanisms 3 rotates to the welding station with the clamped parts, the welding robot 4 welds the parts to be welded exposed at the clearance opening 322 according to the preset welding program trajectory. First, it completes the welding of the parts to be welded between the visible sub-parts on the front of the part. Then, the first drive motor 35 drives the fixing base 32 to rotate 180 degrees, and the welding robot 4 continues to weld the remaining parts to be welded between the remaining sub-parts on the back of the part.

[0047] The implementation principle of a multi-process parallel welding equipment in this application embodiment is as follows: In the initial state, the indexing disc 2 drives two sets of welding fixing mechanisms 3 symmetrically arranged at both ends of the diameter to be aligned to the fixing position and the welding position respectively. The fixing seats 32 of the two sets of welding fixing mechanisms 3 are both in the first welding position before they are initially flipped. The operator first slides the clamping part 332 away from the fixing seat 32 along the connecting bolt and the anti-rotation guide column 323 to make room for the loading operation of the positioning part 321. Then, the two sets of sub-parts to be welded are placed into the positioning groove of the fixing seat 32 to complete the initial alignment, so that the welding joint between the sub-parts is completely exposed in the range of the clearance opening 322 on the fixing seat 32 that corresponds one-to-one with the positioning part 321.

[0048] Subsequently, the automatic locking device 5 is activated, and the three-axis linear displacement drive 51 drives the slide of the Z-axis module to move above the connecting bolt. The CCD vision positioning camera 54 on the Z-axis slide performs image recognition on the head of the connecting bolt. The three-axis linear displacement drive 51 drives the tightening member 53 to descend and insert into the torque interface of the head of the connecting bolt. The second drive motor 52 drives the tightening member 53 to rotate according to the preset torque value, driving the connecting bolt to complete the thread engagement with the fixed seat 32. During the engagement process, the anti-rotation guide post 323 restricts the circumferential rotational freedom of the clamping member 332 until the head end face of the connecting bolt presses against the groove wall of the limiting groove 3321 of the clamping member 332, pushing the clamping member 332 to move towards the fixed seat 32 until the clamping surface of the clamping member 332 is tightly attached to the upper surface of the sub-part.

[0049] When the auxiliary clamping assembly 34 is activated, two switchable control modes can be selected according to the working scenario: when the manual air valve 3411 control mode is selected, the operator manually operates the air valve 3411 to control the compressed air to enter the clamping cylinder 341 and push the piston rod to extend; when the electric control mode is selected, the piston rod of the clamping cylinder 341 extends directly, and the end of the piston rod of the clamping cylinder 341 is adapted to the contour clamping member 342 on the outer surface of the sub-part through the contour groove 3421 to insert and cooperate with the corresponding sub-part, further clamping and fixing the welding part of the sub-part.

[0050] After all clamping operations are completed, the indexing disc 2 rotates 180 degrees around its vertical axis, causing the clamped parts to switch from the fixed station to the welding station. At the same time, another set of idle welding fixing mechanisms 3 switches from the welding station to the fixed station. At this time, while the welding station starts welding operations, the fixed station can simultaneously carry out the clamping operations of the next set of parts, realizing the complete parallel processing of part clamping and welding processes.

[0051] The part switched to the welding station is automatically welded by the welding robot 4 fixed on the frame 1 through the clearance port 322 of the fixed seat 32 to the welding part on the front side. After the welding is completed, the first drive motor 35 on the bracket 31 starts and drives the fixed seat 32 to rotate 180 degrees relative to the bracket 31, so that the part reaches the second welding station. During the rotation, the auxiliary clamping component 34 keeps the clamping state. After the rotation is in place, the side surface of the fixed seat 32 near the bracket 31 abuts against the top of the limiting component 311, which restricts the rotation stroke of the fixed seat 32.

[0052] Subsequently, the welding robot 4 performs automated welding on the welding joint on the back of the part through the clearance opening 322 of the fixed seat 32. After all welding operations are completed, the indexing disc 2 performs a 180-degree fixed-angle rotation, which drives the finished part to switch back to the fixed station. The automatic locking device 5 drives the tightening part 53 to rotate in the opposite direction to loosen the connecting bolts. The piston rod of the clamping cylinder 341 retracts, which drives the contour clamping part 342 to release the clamp. The operator slides the clamping part 332 away from the fixed seat 32 to make room for material handling and then removes the finished part. At the same time, another set of clamped parts has been switched to the welding station to start the welding operation, realizing continuous and parallel production of multiple parts, shortening the production cycle of a single part, and improving the efficiency of batch production.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-process parallel welding device, characterized in that: The assembly includes a frame (1), an indexing disc (2) rotatable around its own axis, and at least two sets of welding fixing mechanisms (3). The indexing disc (2) is rotatably mounted on the frame (1), and at least two sets of welding fixing mechanisms (3) are mounted on the indexing disc (2). The indexing disc (2) is used to drive each set of welding fixing mechanisms (3) to synchronously switch between the fixed station and the welding station. The welding fixing mechanism (3) includes a bracket (31), a fixing seat (32), a clamping assembly (33), and an auxiliary clamping assembly (34). The bracket (31) is fixed on the indexing disc (2), and the fixing seat (32) is rotatably mounted on the bracket (31). The initial plane of the fixing seat (32) is flush with the surface of the indexing disc (2). The fixed base (32) can be rotated at a certain angle relative to the bracket (31). The fixed base (32) is provided with a number of positioning parts (321) for positioning the sub-parts to be welded and a clearance opening (322) corresponding to each of the positioning parts (321). The clearance opening (322) passes through the fixed base (32), and the welding joint parts of all sub-parts are exposed at the clearance opening (322). The clamping component (33) is provided on the bracket (31). The clamping component (33) is used to lock and fix the sub-parts on the fixed base (32). The auxiliary clamping component (34) is provided on the bracket (31). The auxiliary clamping component (34) is used to enhance the welding stability of the sub-parts.

2. The multi-process parallel welding equipment according to claim 1, characterized in that: The welding fixing mechanism (3) further includes a first drive motor (35), which is connected to the fixing seat (32) in a transmission manner. The first drive motor (35) is fixedly mounted on the bracket (31). The first drive motor (35) is used to drive the fixing seat (32) to rotate 180 degrees relative to the bracket (31). A limiting member (311) is provided on one side surface of the bracket (31) facing the fixing seat (32). A clearance part (324) is provided on the fixing seat (32) corresponding to the position of the limiting member (311). When the fixing seat (32) is in the first welding position without initial rotation, the limiting member (311) passes through the clearance part (324). When the fixing seat (32) is rotated to the second welding position with a 180-degree rotation, the side surface of the fixing seat (32) near the bracket (31) abuts against the top of the limiting member (311).

3. The multi-process parallel welding equipment according to claim 1, characterized in that: The clamping assembly (33) includes several sets of locking members (331) that cooperate with the fixed base (32) and clamping members (332) fitted on the locking members (331). The clamping members (332) can slide along the axial direction of the locking members (331).

4. The multi-process parallel welding equipment according to claim 3, characterized in that: It also includes an automatic locking device (5), which is mounted on the frame (1) and located on the outside of the indexing disc (2). The automatic locking device (5) is used to perform a constant torque tightening operation on the locking member (331).

5. The multi-process parallel welding equipment according to claim 4, characterized in that: The automatic locking device (5) includes a three-axis linear displacement drive (51), a second drive motor (52), and a tightening component (53). The second drive motor (52) is located in the Z-axis direction of the three-axis linear displacement drive (51). The second drive motor (52) is connected to the tightening component (53) in a transmission connection. The end of the tightening component (53) is adapted to the locking component (331).

6. The multi-process parallel welding equipment according to claim 5, characterized in that: The locking member (331) is a connecting bolt, which is threadedly engaged with the fixing seat (32). The head of the connecting bolt is provided with a torque interface adapted for automatic tightening. The end of the tightening member (53) is adapted to the shape of the torque interface. The clamping member (332) has a limiting groove (3321) corresponding to the position of the connecting bolt. When the connecting bolt and the fixing seat (32) are threadedly engaged to the preset clamping stroke, the end face of the head of the connecting bolt away from the torque interface abuts against the groove wall of the limiting groove (3321).

7. The multi-process parallel welding equipment according to claim 5, characterized in that: A visual positioning camera (54) is also provided in the Z-axis direction of the three-axis linear displacement drive (51). The detection end of the visual positioning camera (54) faces the locking member (331). The visual positioning camera (54) is used to identify the position of the locking member (331).

8. The multi-process parallel welding equipment according to claim 3, characterized in that: An anti-rotation guide post (323) is fixedly provided on the fixed base (32). The axial direction of the anti-rotation guide post (323) is consistent with the axial direction of the locking member (331). The anti-rotation guide post (323) passes through the clamping member (332). The clamping member (332) can slide along the axial direction of the anti-rotation guide post (323).

9. The multi-process parallel welding equipment according to claim 1, characterized in that: The auxiliary clamping assembly (34) includes a clamping cylinder (341) and a contour clamping member (342). The contour clamping member (342) is adapted to one of the sub-parts. The contour clamping member (342) is fixedly mounted on the piston rod of the clamping cylinder (341). The clamping cylinder (341) is equipped with a valve (3411), which is connected to the internal pipeline of the clamping cylinder (341).

10. The multi-process parallel welding equipment according to claim 1, characterized in that: It also includes a welding robot (4), which is fixedly installed on the frame (1) and the working range of the welding robot (4) covers the welding station on the indexing disc (2).

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