New energy automobile frame splicing device

Abstract

The application discloses a new energy automobile frame splicing equipment, comprising: a chassis, provided with a sliding driving mechanism; two sliding frames, provided with a splicing position and a pre-assembly position; two clamping frames, provided with a feeding position and an assembly position; two first rotary driving mechanisms, respectively installed on the two sliding frames to drive the corresponding clamping frames to rotate; and a transverse connecting structure clamping assembly for clamping the transverse connecting structure. At least one side of the sliding frame is driven by the sliding driving mechanism to slide along the chassis, so that the distance between the two groups of sliding frames is adjusted, and the pre-assembly position and the splicing position are switched. The clamping frames are rotatably installed on the two sliding frames and are independently driven to rotate by the first rotary driving mechanisms on the corresponding sliding frames, so that the clamping frames can be switched between the horizontal feeding position and the vertical assembly position, the splicing and welding working conditions of the automobile frame are matched, and the horizontal feeding and vertical splicing integrated operation is realized.

Description

Technical Field

[0001] This invention relates to the field of welding technology for new energy vehicle bodies, and in particular, to a new energy vehicle frame assembly equipment. Background Technology

[0002] The monocoque chassis of new energy vehicles is formed by welding together the left and right side frames and the transverse connecting structural components that connect the two side frames in series. The overall size of the chassis has a large span and many irregular curved surfaces. The precision of assembly and docking directly determines the body weight, welding deformation and overall vehicle safety performance.

[0003] Traditional tooling fixtures typically have a fixed vertical clamping position, meaning side frames can only be placed vertically during hoisting and placement. This vertical support for the side frames is cumbersome, leading to difficulties in clamping them. Existing frame assembly fixtures often employ a fixed-spacing dual-station structure. However, the clamping space is narrow during side frame hoisting and loading, making it easy for the hoisting trajectory to interfere with the clamps. This can easily cause damage to the workpiece by bumping into the side frame surface. Manual adjustment of the frame's posture is time-consuming, severely hindering production line cycle time. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a new energy vehicle frame assembly device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A new energy vehicle frame assembly device includes: a base frame with a sliding drive mechanism installed; two sliding frames, each having an assembly position and a pre-assembly position; the distance between the two sliding frames at the assembly position is smaller than the distance between the two sliding frames at the pre-assembly position; at least one sliding frame is slidably mounted on the base frame and connected to the sliding drive mechanism to change the distance between the two sliding frames, thereby switching between the assembly position and the pre-assembly position; two clamping frames, each having a loading position and an assembly position, rotatably mounted on the sliding frames along a horizontal axis to switch between the loading position and the assembly position, the clamping frame at the loading position being horizontally positioned and the clamping frame at the assembly position being vertically positioned; each of the two clamping frames is equipped with a side frame clamping assembly to clamp the corresponding side frame; two first rotation drive mechanisms, respectively mounted on the two sliding frames, to drive the corresponding clamping frames to rotate; and a transverse connecting structure clamping assembly for clamping transverse connecting structural members, the transverse connecting structural members being used to connect the side frames on the two sliding frames in series.

[0006] Furthermore, the lateral connecting structure includes a lower connecting member, and the lateral connecting structure clamping assembly includes a lower connecting member clamping mechanism. The lower connecting member clamping mechanism includes a support structure, a clamping structure, a welding structure, and a positioning structure. The support structure is used to support the lower connecting member, the clamping structure is used to clamp the bottom of the side frame to the lower connecting member, the welding structure is used to weld the bottom of the side frame to the position where it fits with the lower connecting member, and the positioning structure is used to position the lower connecting member.

[0007] Furthermore, the clamping structure includes a first mounting base fixed to the base frame, on which a first clamping arm and a second clamping arm are rotatably mounted. Both the first and second clamping arms are detachably mounted with clamping and fitting blocks. The first mounting base is equipped with a drive mechanism to drive the first and second clamping arms to rotate and move to achieve clamping or loosening of the opposite side frame and the lower connecting member.

[0008] Furthermore, the welding structure includes a first welding seat, on which a first welding head and a second welding head are rotatably mounted. The first welding seat is equipped with a drive mechanism to drive the first welding head and the second welding head to rotate and move so that the first welding head and the second welding head are close to or away from the side frame and the lower connector.

[0009] Furthermore, the positioning structure is a positioning pin that can be detachably installed on the base frame, and multiple positioning pins are spaced apart.

[0010] Furthermore, the support structure includes a support base that can be detachably installed on the base frame, and a support block is detachably installed on the upper end of the support base.

[0011] Furthermore, the sliding drive mechanism includes a rotary motor, a transmission rod, a swing arm, and a connecting rod. The rotating shaft of the rotary motor is connected to the transmission rod, the swing arm is connected to the transmission rod and can rotate synchronously with the transmission rod, one end of the connecting rod is hinged to the swing arm, and the other end is hinged to the connecting seat on the sliding frame.

[0012] Furthermore, the sliding frame is equipped with a limit stop and a rotatably mounted limit block, the limit block having an avoidance state and a limit state; the sliding frame is equipped with a second rotary drive mechanism, the second rotary drive mechanism being used to drive the limit block to move to realize the switching between the avoidance state and the limit state; the limit block in the avoidance state can avoid the movement path of the clamping frame rotating from the loading position to the assembly position; the limit block in the limit state can cooperate with the limit stop to limit the rotation of the clamping frame in two directions.

[0013] Furthermore, the transverse connecting structure includes an upper connecting member, and the transverse connecting structure clamping assembly includes a movable clamping and positioning mechanism; the movable clamping and positioning mechanism has an avoidance loading position and a positioning clamping position; the movable clamping and positioning mechanism includes a movable arm and a positioning clamping assembly, and the clamping frame is equipped with a telescopic drive mechanism; the movable arm is hinged to the clamping frame at the middle, and the telescopic drive mechanism is used to drive the movable arm to rotate, so as to realize the switching between the avoidance loading position and the positioning clamping position; the movable clamping and positioning mechanism in the positioning clamping position can clamp the upper connecting member and the side frame and simultaneously position the upper connecting member; the positioning clamping assembly includes a connecting frame, a lifting frame, a rotating frame, and a third rotating drive. The system includes a lifting mechanism and a lifting drive mechanism; the connecting frame is connected to the end of the movable arm, and the lifting frame is movably mounted on the connecting frame; the rotating frame is movably mounted on the connecting frame; the lifting drive mechanism is used to drive the lifting frame to move up and down; the third rotating drive mechanism is used to drive the rotating frame to rotate, so that the rotating frame cooperates with the lifting frame to clamp the upper connecting piece and the side frame; the bottom of the lifting frame is provided with a positioning pin, the lifting frame is provided with a guide post extending upward through the connecting frame, the upper end of the guide post is connected with a pressure bar, the upper end of the connecting frame is hinged to a manual pressure rod on the side corresponding to the pressure bar, the middle of the manual pressure rod is connected to the pressure bar with a linkage rod, and the two ends of the linkage rod are respectively hinged to the manual pressure rod and the pressure bar.

[0014] Furthermore, the side frame clamping assembly includes: a positioning assembly, installed on the clamping frame, for positioning the side frame; a fitting and abutting assembly, installed on the clamping frame, for fitting and abutting the side frame; and a clamping and fixing assembly, installed on the clamping frame, for clamping and fixing the side frame.

[0015] The present invention has the following beneficial effects: A sliding drive mechanism is installed on the base frame. At least one sliding frame is driven by the sliding drive mechanism to slide along the base frame, thereby adjusting the distance between the two sets of sliding frames and realizing the switching between the pre-assembly position and the assembly position. In the pre-assembly position, the distance between the two sliding frames is larger, providing ample space for lifting and loading the side frame, avoiding spatial interference between the lifting mechanism and the fixture, preventing damage to the side frame from collisions, and improving the workpiece yield. When switching to the assembly position, the distance between the two sliding frames is reduced, completing the docking of the left and right side frames. By adjusting the distance between the sliding frames using the sliding drive mechanism, it can adapt to different vehicle widths without the need for overall disassembly and assembly of the tooling. The equipment has strong flexible production capabilities, shortens the vehicle model changeover and debugging time, and reduces production line modification costs. A clamping frame is rotatably installed on each of the two sliding frames, and is independently driven by the first rotary drive mechanism on the corresponding sliding frame, allowing the clamping frame to switch between a horizontal loading position and a vertical assembly position. During the loading stage, the clamping frame remains horizontally positioned, allowing the robotic arm or lifting equipment to stably place the side frame. This provides a wide field of vision and simplifies the alignment of the side frame. After the side frame is clamped by the side frame clamping components on the clamping frame, the first rotary drive mechanism rotates the clamping frame to a vertical assembly posture, matching the frame assembly and welding operation, achieving integrated horizontal loading and vertical assembly. The two clamping frames are independently driven to rotate, allowing for synchronous or individual posture adjustments based on actual production needs, enhancing the equipment's adjustability. The transverse connection structure clamping components can directly clamp the transverse connection structural parts used to connect the two side frames. Integrated with the side frame clamping components on the two clamping frames on the same machine, it eliminates multiple transfer and clamping steps, fundamentally eliminating accumulated assembly errors caused by multiple positioning steps and ensuring the accuracy and quality of the connection between the transverse connection structural parts and the two side frames.

[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the sliding frame of the present invention in the pre-installed position; Figure 2 This is a schematic diagram of the overall structure of the sliding frame of the present invention in the assembled position; Figure 3 This is a structural diagram showing the placement of the lower connector; Figure 4 This is a structural diagram of the base frame, sliding frame, and lower connecting component clamping mechanism; Figure 5 yes Figure 4 Enlarged view of point A; Figure 6 yes Figure 4 Enlarged view of point B; Figure 7 This is a structural diagram of the clamping frame, base frame, and lower connecting component clamping mechanism; Figure 8 yes Figure 7 Enlarged view of point C; Figure 9 yes Figure 7 Enlarged view of point D; Figure 10 yes Figure 7 Enlarged view of point E; Figure 11 This is a schematic diagram of the disassembled structure of the movable clamping and positioning mechanism; Figure 12 This is a structural schematic diagram of the positioning and clamping assembly; Figure 13 This is a schematic diagram of the rotating frame in the avoidance configuration. Figure 14 This is a partial structural diagram of the lifting frame; Figure 15 This is a structural diagram of the vehicle frame; Figure 16 This is a structural diagram of the side frame.

[0018] Legend: Base frame 100, sliding drive mechanism 110, rotary motor 111, transmission rod 112, swing arm 113, connecting rod 114; Sliding frame 200, connecting seat 210, limiting stop bar 220, limiting movable block 230, second rotary drive mechanism 240; Mounting bracket 300, connecting base 310, horizontal bar 320, vertical column 321; First rotary drive mechanism 400, connecting shaft 410; The components include: a lower connector clamping mechanism 500, a support structure 510, a support base 511, a support block 512, a clamping structure 520, a first mounting base 521, a first clamping arm 522, a second clamping arm 523, a clamping and fitting block 524, a welding structure 530, a first welding base 531, a first welding head 532, a second welding head 533, and a positioning structure 540. The following components are included: movable clamping and positioning mechanism 600, movable arm 610, protrusion 611, positioning and clamping assembly 620, connecting frame 621, lifting frame 622, rotating frame 623, third rotating drive mechanism 624, lifting drive mechanism 625, lower pressure block 626, top pressure block 627, positioning pin 628, guide column 629, telescopic drive mechanism 630, pressure bar 640, manual pressure rod 650, linkage rod 660, elastic mounting component 670, elastic limit plate 671, embedded notch 672, mounting rod 680, limit hook bar 690, and buffer block 691. Positioning component 700; Fitting and abutting component 800, first support column 810, first abutting block 820; Clamping and fixing assembly 900, base 910, pressure arm 920, clamping block 921, fourth rotary drive mechanism 930, and pressing block 940; Side frame 101, upper connector 102, lower connector 103, support 104. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0023] Please refer to Figure 1 and Figure 2A preferred embodiment of the present invention provides a new energy vehicle frame assembly device, comprising a base frame 100, two sliding frames 200, two clamping frames 300, two first rotary drive mechanisms 400, and a transverse connecting structure clamping assembly.

[0024] The base frame 100 is equipped with a sliding drive mechanism 110.

[0025] The two sliding frames 200 have a joining position and a pre-installation position; such as Figure 1 As shown, the sliding bracket 200 is in the pre-installed position, as... Figure 2 As shown, the sliding frame 200 is in the assembled position. The distance between the two sliding frames 200 in the assembled position is smaller than the distance between the two sliding frames 200 in the pre-installed position; at least one of the sliding frames 200 is slidably mounted on the base frame 100 and connected to the sliding drive mechanism 110, so as to change the distance between the two sliding frames 200, thereby realizing the switching between the assembled position and the pre-installed position; in this embodiment, the sliding drive mechanism 110 is provided with two to drive the two sliding frames 200 to slide, and a sliding pair can be provided between the bottom of the sliding frame 200 and the base frame 100 to realize sliding guidance, for example, a slide rail and a slider are respectively installed on the base frame 100 and the sliding frame 200.

[0026] The clamping frame 300 has a loading position and an assembly position. The clamping frame 300 is rotatably mounted on the sliding frame 200 along the horizontal axis to realize the switching between the loading position and the assembly position. The clamping frame 300 in the loading position is set horizontally, and the clamping frame 300 in the assembly position is set vertically. Both clamping frames 300 are equipped with side frame clamping components to clamp the corresponding side frame 101.

[0027] Two first rotary drive mechanisms 400 are respectively mounted on two sliding frames 200 to drive the corresponding clamping frames 300 to rotate. Specifically, the clamping frames 300 are connected to connecting shafts 410 at both ends, and a support frame for the connecting shafts 410 to rotate is fixedly mounted on the sliding frames 200. The first rotary drive mechanism 400 is a motor, which is connected to one of the connecting shafts 410 through a reduction mechanism, thereby driving the clamping frame 300 to rotate.

[0028] A lateral connection structure clamping assembly is used to clamp the lateral connection structure components, which are used to connect the side frames on two sliding frames 200 in series. (Refer to...) Figure 15The transverse connecting structure includes an upper connecting member 102 and a lower connecting member 103. The vehicle frame is connected by left and right side frames 101 and the upper connecting member 102 and the lower connecting member 103 connecting the left and right side frames 101. A transversely extending support portion 104 is provided at the upper end of the side frame 101. The support portion 104 has concave and convex surfaces. The two ends of the upper connecting member 102 are engaged with the support portion 104 to achieve initial positioning, thereby facilitating the support and initial positioning of the upper connecting member 102 during placement. After each workpiece is clamped and positioned by this new energy vehicle frame assembly equipment, welding is then performed by welding equipment or manually.

[0029] This invention provides a new energy vehicle frame assembly equipment. A sliding drive mechanism 110 is installed on a base frame 100. At least one sliding frame 200 is driven by the sliding drive mechanism 110 to slide along the base frame 100, thereby adjusting the distance between the two sets of sliding frames 200 and switching between a pre-assembly position and an assembly position. In the pre-assembly position, the distance between the two sliding frames 200 is larger, providing ample space for lifting and loading the side frame 101, avoiding spatial interference between the lifting mechanism and the fixtures, preventing damage to the side frame 101, and improving the workpiece yield. When switching to the assembly position, the distance between the two sliding frames 200 is reduced, completing the docking of the left and right side frames 101. By adjusting the distance between the sliding frames 200 using the sliding drive mechanism 110, the equipment can adapt to different vehicle widths without requiring overall disassembly and assembly of tooling. This provides strong flexible production capabilities, shortens vehicle model changeover and debugging time, and reduces production line modification costs. Two sliding frames 200 are respectively mounted on rotatably, and each is independently driven to rotate by a first rotary drive mechanism 400 on the corresponding sliding frame 200, allowing the clamping frame 300 to switch between a horizontal loading position and a vertical assembly position. During the loading stage, the clamping frame 300 remains horizontally arranged, allowing the robot or lifting equipment to place the side frame 101 stably, providing a wide field of vision and reducing the difficulty of aligning the side frame 101. After the side frame 101 is clamped by the side frame clamping assembly on the clamping frame 300, the first rotary drive mechanism 400 drives the clamping frame 300 to rotate to a vertical assembly posture, matching the frame assembly and welding operation, realizing integrated horizontal loading and vertical assembly operations. The independent rotation of the two clamping frames 300 allows for synchronous or individual posture adjustment according to actual production needs, enhancing the equipment's adjustability. The transverse connection structure clamping assembly can directly clamp the transverse connection structural components used to connect the two side frames 101. Integrated with the side frame clamping assemblies on the two side clamping frames 300, it is mounted on the same machine, eliminating multiple transfer and clamping steps. This fundamentally eliminates the cumulative assembly errors caused by multiple positioning steps, ensuring the docking accuracy and quality of the transverse connection structural components with the two side frames 101. Through the coordinated operation of the base frame 100, sliding drive mechanism 110, sliding frame 200, clamping frame 300, first rotary drive mechanism 400, and transverse connection structure clamping assembly, it effectively overcomes the shortcomings of existing frame assembly tooling, such as poor wheelbase adaptability, easy interference during loading, single clamping posture, large step-by-step assembly errors, and low assembly accuracy, possessing multiple technical advantages. This equipment integrates adjustable spacing sliding, clamping frame tilting, and synchronous positioning and clamping of side frames and lateral connecting parts. It is flexibly adaptable to the co-production of multiple vehicle models, and the loading and unloading operations are safe and convenient. The frame assembly and positioning accuracy is high and the production efficiency is high, which can meet the production needs of high-precision, high-efficiency, and flexible mass production of new energy vehicle frames.

[0030] Reference Figure 3 , Figure 4 and Figure 5In some embodiments of the present invention, the transverse connecting structure includes a lower connecting member, and the transverse connecting structure clamping assembly includes a lower connecting member clamping mechanism 500. The lower connecting member clamping mechanism 500 includes a support structure 510, a clamping structure 520, a welding structure 530, and a positioning structure 540. The support structure 510 is used to support the lower connecting member, the clamping structure 520 is used to clamp the bottom of the side frame to the lower connecting member, the welding structure 530 is used to weld the bottom of the side frame to the lower connecting member at the contact position, and the positioning structure 540 is used to position the lower connecting member. The support structure 510 supports the lower connecting member to prevent it from being suspended and deformed, the positioning structure 540 limits the reference position of the lower connecting member to ensure that the placement reference of the lower connecting member is uniform, the clamping structure 520 presses the bottom of the side frame 101 to the lower connecting member to eliminate the splicing gap, and the welding structure 530 directly completes the welding operation at the contact position. The lower connector positioning, support, clamping, and welding are completed simultaneously, eliminating the need for cross-station transfer, reducing dimensional deviations caused by multiple clamping operations, and simultaneously improving the integration of the assembly and welding. Since the lower connector 103 is located at the bottom and has many interfering structures, making full welding by hand or equipment inconvenient, a 530-degree spot welding method is used first to initially fix the lower connector 103 to the side frame 101. Further welding will be performed later when it is convenient to complete the welding process.

[0031] Reference Figure 8 In a specific embodiment of the present invention, the clamping structure 520 includes a first mounting base 521 fixed to the base frame 100. A first clamping arm 522 and a second clamping arm 523 are rotatably mounted on the first mounting base 521. Both the first clamping arm 522 and the second clamping arm 523 are detachably mounted with clamping contact blocks 524. The first mounting base 521 is equipped with a driving mechanism to drive the first clamping arm 522 and the second clamping arm 523 to rotate and move to achieve clamping or releasing of the opposite side frame and the lower connecting member. The first clamping arm 522 and the second clamping arm 523 simultaneously clamp the bottom of the side frame 101 and the lower connecting member from both sides to achieve bidirectional clamping. When the clamping contact block 524 is worn or the model is changed, only the clamping contact block 524 needs to be replaced separately. There is no need to disassemble the entire first clamping arm 522, the second clamping arm 523 and the first mounting base 521, which reduces maintenance costs and shortens downtime for model changes.

[0032] Reference Figure 8In a specific embodiment of the present invention, the welding structure 530 includes a first welding seat 531, on which a first welding head 532 and a second welding head 533 are rotatably mounted. A driving mechanism is installed on the first welding seat 531 to drive the first welding head 532 and the second welding head 533 to rotate, thereby moving the first welding head 532 and the second welding head 533 closer to or away from the side frame and the lower connector. The welding structure 530 uses the first welding seat 531 to support the rotatable first welding head 532 and the second welding head 533, with the driving mechanism controlling the rotation of the welding heads to move closer to or away from the workpiece. The dual welding heads can simultaneously weld the weld seams on both sides of the side frame 101 and the lower connector 103, ensuring uniform welding heat on both sides and preventing unilateral shrinkage and deformation of the frame due to high temperature on one side. The welding heads can rotate to avoid interference with the placement of the lower connector and the side frame 101 during other stages.

[0033] Reference Figure 8 In a specific embodiment of the present invention, the positioning structure 540 is a positioning pin that can be detachably installed on the base frame 100, and multiple positioning pins are spaced apart. The positioning structure 540 uses multiple detachable positioning pins arranged at intervals on the base frame 100. Multiple positioning pins constrain the lower connector 103 at multiple points, limiting the horizontal and torsional multi-degree-of-freedom offset of the lower connector and establishing a unified assembly benchmark. The positioning pin adopts a detachable installation structure, which can be adapted to the benchmark hole positions of the lower connector under different vehicle models. When changing vehicle models, only the corresponding specification positioning pins need to be added, removed, or replaced, which has strong versatility.

[0034] Reference Figure 8 In a specific embodiment of the present invention, the support structure 510 includes a support base 511 detachably mounted on the base frame 100, and a support block 512 detachably mounted on the upper end of the support base 511. The support structure 510 consists of the support base 511 detachably mounted on the base frame 100 and the detachable support block 512 on the upper end of the support base. The support base 511 provides a stable installation reference, and the support block 512 directly contacts the lower connector 103 to bear the force; after long-term pressure wear, the support block 512 can be disassembled and replaced separately without disassembling the entire support base 511; when switching to lower connectors 103 with different thicknesses and profiles, only the corresponding profile support block 512 needs to be replaced for adaptation, making tooling modification convenient and improving the equipment's flexible adaptability.

[0035] Reference Figure 6In a specific embodiment of the present invention, the sliding drive mechanism 110 includes a rotary motor 111, a transmission rod 112, a swing arm 113, and a connecting rod 114. The rotation shaft of the rotary motor 111 is connected to the transmission rod 112. The swing arm 113 is connected to the transmission rod 112 and can rotate synchronously with the transmission rod 112. One end of the connecting rod 114 is hinged to the swing arm 113, and the other end is hinged to the connecting seat 210 on the sliding frame 200. The connecting rod 114 hinged to the connecting seat 210 of the sliding frame 200 constitutes a crank-connecting rod sliding drive structure. The rotary motor 111 outputs rotational power, which is converted into linear push-pull power by the transmission rod 112 and swing arm 113, driving the sliding frame 200 to slide smoothly. The hinged transmission of the linkage is impact-resistant, simple in structure, and not prone to jamming. The swing arm linkage mechanism has a defined stroke limit, which can accurately control the sliding frame 200 to stop at the pre-assembly position and the assembly position. The entire transmission components are centrally arranged in the base frame 100, which does not occupy the workspace above the workpiece and reduces interference. The transmission connection between the rotating shaft and the transmission rod 112 can be achieved by a worm gear. The end of the rotating shaft is connected to the worm, and the middle of the transmission rod 112 is equipped with a worm gear and worm drive. The swing arm 113 and the connecting rod 114 have two sets of connections to the two ends of the transmission rod 112, thereby realizing multi-point power output and making the sliding frame slide more smoothly. The worm gear and worm drive can also achieve self-locking and also has the effect of speed reduction transmission.

[0036] Reference Figure 5In a further embodiment of the present invention, a limit stop bar 220 and a rotatably mounted limit block 230 are installed on the sliding frame 200. The limit block 230 has an avoidance state and a limit state. A second rotary drive mechanism 240 is installed on the sliding frame 200. The second rotary drive mechanism 240 is used to drive the limit block 230 to switch between the avoidance state and the limit state. In the avoidance state, the limit block 230 can avoid the movement path of the clamping frame 300 rotating from the loading position to the assembly position. In the limit state, the limit block 230 can cooperate with the limit stop bar 220 to limit the rotation of the clamping frame 300 in two directions (counterclockwise and clockwise). When the horizontal clamping frame 300 clamps the side frame 101 and needs to be rotated to a vertical position, or when welding is completed and the frame needs to be reloaded and flipped back to a horizontal position, the second rotary drive mechanism 240 drives the limit block 230 to switch to an avoidance state, avoiding the rotation path of the clamping frame 300. This ensures unobstructed flipping of the clamping frame 300 and smooth loading and flipping processes. When the side frame 101 rotates from a horizontal to a vertical position, the limit block 230 can rotate to a limit state, working in conjunction with the limit stop 220 to lock the clamping frame 300 bidirectionally, limiting forward and reverse swaying or overtravel of the clamping frame 300. During welding, this counteracts the flipping torque caused by welding vibrations, stabilizing the clamping frame 300's posture and avoiding reliance solely on the first rotary drive mechanism 400 to maintain the clamping frame 300's position. The limit stop 220 can be spring-loaded and elastically mounted on the sliding frame 200 to achieve buffering and limiting when the frame is rotated to the correct position.

[0037] Reference Figures 10 to 14 In some embodiments of the present invention, the transverse connecting structure includes an upper connecting member 102, and the transverse connecting structure clamping assembly includes a movable clamping and positioning mechanism 600. The movable clamping and positioning mechanism 600 has an avoidance loading position and a positioning clamping position. When in the positioning clamping position, the movable clamping and positioning mechanism 600 can clamp the upper connecting member 102 and the side frame 101 and simultaneously position the upper connecting member 102. During loading operations, it can be switched to the avoidance position to effectively avoid spatial interference between the tooling structure and the side frame 101 and the upper connecting member 102, avoid workpiece collisions, scratches, and deformation, and improve the product yield. When in the positioning clamping position, the movable clamping and positioning mechanism 600 can simultaneously complete the clamping and fixing of the side frame 101 and the precise positioning and clamping of the upper connecting member 102, realizing the integrated synchronous positioning and assembly operation of the side frame 101 and the upper connecting member 102, avoiding the step-by-step assembly and multiple clamping operation mode, and improving the assembly accuracy and efficiency of the frame assembly.

[0038] The movable clamping and positioning mechanism 600 includes a movable arm 610 and a positioning clamping assembly 620. A telescopic drive mechanism 630 is mounted on the clamping frame 300. The movable arm 610 is hinged to the clamping frame 300 at its middle section. The telescopic drive mechanism 630 drives the movable arm 610 to rotate, switching between a material-avoiding position and a positioning clamping position. In the positioning clamping position, the positioning clamping assembly 620 clamps the upper connecting member 102 and the side frame 101, simultaneously positioning the upper connecting member 102. Specifically, one end of the telescopic drive mechanism 630 is hinged to the clamping frame 300, and the other end is hinged to the end of the movable arm 610 furthest from the positioning clamping assembly 620. The telescopic drive mechanism 630 can be a telescopic cylinder. The telescopic movement of the telescopic drive mechanism 630 smoothly drives the movable arm 610 to swing around the hinge point.

[0039] The positioning and clamping assembly 620 includes a connecting frame 621, a lifting frame 622, a rotating frame 623, a third rotary drive mechanism 624, and a lifting drive mechanism 625. The connecting frame 621 is connected to the end of the movable arm 610. The lifting frame 622 is movably mounted on the connecting frame 621. The rotating frame 623 is movably mounted on the connecting frame 621. The lifting drive mechanism 625 is used to drive the lifting frame 622 to move up and down. The third rotary drive mechanism 624 is used to drive the rotating frame 623 to rotate, so that the rotating frame 623 cooperates with the lifting frame 622 to clamp the upper connecting member 102 and the side frame 101. The connecting frame 621 includes multiple sub-connecting frames that can be connected by fasteners, so as to install the lifting frame 622 and the rotating frame 623 respectively. The lifting movement of the lifting frame 622 is coordinated with the rotation movement of the rotating frame 623. The two are linked to complete the positioning and clamping of the upper connecting member 102 and the auxiliary clamping of the upper end of the side frame 101 simultaneously. One mechanism simultaneously constrains two workpieces, eliminating the need for two separate clamping mechanisms. This simplifies the overall tooling layout, reduces the number of driving components, lowers equipment manufacturing costs, and ensures the positioning of the side frame 101 and the upper connecting part 102, guaranteeing the assembly accuracy of their welding. The lifting frame 622 has a detachable lower pressure block 626 at its bottom, and the rotating frame 623 is detachably connected to a top pressure block 627. The rotating frame 623 has both a clearance state and a clamping state, such as... Figure 13As shown, the top pressure block 627 and the lower pressure block 626 on the rotating frame 623 in the avoidance state are horizontally offset, so that when the rotating frame 623 in the avoidance state rotates to the positioning and clamping position, it will not interfere with the upper connecting member 102 and the side frame 101. Furthermore, when the rotating frame 623 in the avoidance state rotates to the clamping position in the positioning and clamping position, it can rotate from the side of the upper connecting member 102 to below the upper connecting member 102, thereby catching the upper connecting member 102, and then cooperating with the lifting frame 622 to clamp the upper connecting member 102 and the side frame 101. In the clamping position of the rotating frame 623 in the positioning and clamping position, the top pressure block 627 is located below the lower pressure block 626 and cooperates with the lower pressure block 626 to clamp the upper connecting member 102 and the side frame 101. In the avoidance state, the top pressure block 627 and the lower pressure block 626 are horizontally offset, with no clamping interference, facilitating the entry of the upper connecting piece 102 into the gap between them; in the clamping state, the top pressure block 627 moves below the lower pressure block 626, and the upper and lower parts cooperate to clamp the upper connecting piece 102 and the side frame 101. The lower pressure block 626 and the top pressure block 627 are detachable and can be replaced individually after wear, without the need to replace the entire lifting frame 622 and rotating frame 623.

[0040] The lifting frame 622 has a positioning pin 628 at its bottom and a guide post 629 extending upward through the connecting frame 621. A pressure bar 640 is connected to the upper end of the guide post 629. A manual pressure rod 650 is hinged to the upper end of the connecting frame 621 on the side corresponding to the pressure bar 640. A linkage rod 660 connects the middle of the manual pressure rod 650 and the pressure bar 640. Both ends of the linkage rod 660 are hinged to the manual pressure rod 650 and the pressure bar 640, respectively. The positioning pin 628 at the bottom of the lifting frame 622 can be inserted into the corresponding reference hole of the upper connecting piece 102 for precise positioning. The guide post 629 extends upward through the connecting frame 621 and connects to the pressure bar 640. The connecting frame 621 is hinged to the manual pressure rod 650, and the manual pressure rod 650 and the pressure bar 640 are hinged together via the linkage rod 660. The positioning pin 628 cooperates with the lifting drive mechanism 625 to achieve mechanical positioning of the upper connector 102 and prevent lateral displacement of the upper connector 102. The connecting frame 621 is provided with guide holes corresponding to the guide column 629 for its lifting movement. The guide column 629 constrains the lifting trajectory of the lifting frame 622 to avoid tilting and jamming during the lifting process. In the initial trial production or when the initial positioning deviation of the upper connector 102 is large, if the lifting drive mechanism 625 is directly used to drive the lifting frame 622 downward, even if there is misalignment, the machine will continue to apply a large downward force, which may cause the positioning pin 628 to be subjected to excessive force. The impact caused deformation and damage to the upper connector 102. If manual pressing is initially used, and it cannot be pressed down, the operator can determine that the upper connector 102 is not positioned correctly. The operator can then raise the manual pressure lever 650 to adjust the position of the upper connector 102 and manually press it down again until the positioning pin 628 is inserted into the corresponding reference hole of the upper connector 102. This indicates that the upper connector 102 is accurately positioned. Subsequently, the lifting drive mechanism 625 can be activated to apply a downward force to the lifting frame 622, thereby causing the lower pressure block 626 to press the upper connector 102 tightly, ensuring clamping force. A manual operation mechanism is provided to improve the tooling's fault tolerance and accommodate both automated mass production and manual debugging conditions. It is understandable that the lifting drive mechanism 625 can be a telescopic cylinder. When the telescopic cylinder is not filled with gas to maintain pressure, the manual lever 650 can be operated to drive the lifting frame 622 to rise and fall. When the lifting frame 622 is manually pressed down to the position, gas can be filled in to apply downward pressure and achieve clamping. Of course, when resetting, the lifting frame 622 can also be driven to rise through the lifting drive mechanism 625.

[0041] In a further embodiment of the present invention, an elastic mounting member 670 is fixedly installed on the connecting frame 621, and a mounting rod 680 is fixedly provided on the lifting frame 622. Elastic limiting plates 671 are provided on both sides of the elastic mounting member 670, with the lower ends of the elastic limiting plates 671 close together. An embedding notch 672 is formed between the lower ends of the elastic limiting plates 671. The lifting frame 622 can rise until the mounting rod 680 passes through the embedding notch 672 and is supported by the elastic limiting plates 671. After the lifting frame 622 rises, the mounting rod 680 can push open the elastic limiting plates 671 and pass through the embedding notch 672, where it is supported and limited by the two elastic limiting plates 671. When the lifting frame 622 needs to be kept in a raised position during the loading stage, there is no need to continuously drive the lifting drive mechanism 625 to maintain the lifting state. The lifting frame 622 can be locked in a high position by relying solely on the elastic mounting part 670 to support the mounting rod 680, which reduces the continuous work of the drive mechanism and reduces energy consumption. The elastic limit plate 671 has elastic deformation capability. When the lifting frame 622 is pressed down, the mounting rod 680 can automatically disengage from the embedded notch 672. The locking and releasing actions do not require an additional unlocking mechanism.

[0042] In a further embodiment of the present invention, a limiting hook 690 is installed on the connecting frame 621. The bottom of the limiting hook 690 is provided with a hook block located directly below part of the lifting frame 622 structure. A buffer block 691 is installed on the upper surface of the hook block to buffer the end stroke of the lifting frame 622 during descent. The buffer block can be made of rubber.

[0043] In a further embodiment of the present invention, the upper end of the clamping frame 300 is provided with a connecting base 310 for the movable arm 610 to be rotatably mounted. The connecting base 310 is provided with a horizontal bar 320 below the movable arm 610. The upper surface of the horizontal bar 320 is provided with a buffer structure to buffer and limit the movable arm 610 when it moves to the positioning clamping position. The buffer structure can be a rubber block made of rubber material. The side of the movable arm 610 is provided with a protrusion 611. The horizontal bar 320 is threadedly connected to the protrusion 611. The upper end of the vertical bar 321 is provided with a support head. The protrusion 611 of the movable arm 610 at the positioning clamping position is supported by the support head, thereby realizing the support and limitation of the movable arm 610 at the positioning clamping position. The height of the support head can be adjusted by turning the vertical bar 321, thereby adjusting the position and posture of the movable arm 610 at the positioning clamping position for easy adjustment.

[0044] Reference Figure 7 , Figure 8 and Figure 9 In some embodiments of the present invention, the side frame clamping assembly includes a positioning assembly 700, a fitting and abutting assembly 800, and a clamping and fixing assembly 900.

[0045] The positioning component 700 is mounted on the clamp 300 and is used to position the side frame 101. The positioning component 700 can be a positioning pin that is fixedly mounted on the clamp 300 and spaced apart. The positioning pin can be fixed to the clamp 300 by a detachable fastener, thereby achieving detachable installation and facilitating replacement when changing vehicle models.

[0046] The bonding and abutting component 800 is installed on the clamping frame 300 and is used to bond and abut against the side frame 101. The bonding and abutting component 800 is distributed in the edge and center areas of the clamping frame 300 to provide full-area bonding to the edge and center of the side frame 101. The bonding and abutting component 800 can achieve precise bonding and support for the side frame 101, effectively balance the overall force on the side frame 101, and improve the stability of the frame clamping.

[0047] The clamping and fixing assembly 900 is installed on the clamping bracket 300 and is used to clamp and fix the side frame 101. The clamping and fixing assembly 900 is typically located on the left and right sides and bottom edges of the clamping bracket 300, as well as in the doorway area of ​​the side frame 101 (e.g., Figure 16 As shown), this clamps the edges and middle areas of the side frame 101.

[0048] Specifically, the mating and abutting component 800 includes a first support column 810 fixedly installed on the clamping frame 300, and a first abutting block 820 detachably installed on the first support column 810. When the first abutting block 820 is worn or when switching to the production of a different specification side frame 101, only the first abutting block 820 with the appropriate profile needs to be replaced, without disassembling the first support column 810 and the main body of the clamping frame 300. The quick replacement of the abutting block greatly reduces the time spent on tooling maintenance and vehicle model changeover, and improves the tooling versatility and maintenance convenience. Of course, the connection between the first support column 810 and the clamping frame 300 can also be detachable, thereby further improving the flexibility of disassembly and replacement of the equipment, and further improving the tooling versatility and maintenance convenience.

[0049] Specifically, the clamping and fixing assembly 900 includes a base 910, a pressure arm 920, and a fourth rotary drive mechanism 930. The base 910 is fixedly mounted on the clamping frame 300, and the pressure arm 920 is rotatably mounted on the base 910. A clamping block 921 for contacting the side frame is installed at the end of the pressure arm 920. The fourth rotary drive mechanism 930 drives the pressure arm 920 to rotate, thereby clamping and fixing the side frame 101 in conjunction with the contact and abutment assembly 800. The fourth rotary drive mechanism 930 can be a telescopic cylinder or a rotary cylinder. A rotary cylinder can directly drive the pressure arm 920 to rotate. If it is a telescopic cylinder, one end of the telescopic cylinder can be hinged to the base 910, and the other end can be hinged to the pressure arm 920 to drive its rotation. The fourth rotary drive mechanism 930 drives the pressure arm 920 to rotate and press the side frame 101. The base 910 can be fixedly provided with a pressing block 940 corresponding to the clamping block 921. The rotation of the pressure arm 920 causes the clamping block 921 to move closer to or away from the pressing block 940, thereby achieving the clamping or loosening of the side frame 101.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A new energy vehicle frame assembly equipment, characterized in that, include: The base frame (100) is equipped with a sliding drive mechanism (110). Two sliding frames (200) have a combined position and a pre-installed position; the distance between the two sliding frames (200) in the combined position is smaller than the distance between the two sliding frames (200) in the pre-installed position; at least one of the sliding frames (200) is slidably mounted on the base frame (100) and connected to the sliding drive mechanism (110) so as to change the distance between the two sliding frames (200) and thus realize the switching between the combined position and the pre-installed position; Two clamping frames (300) are provided with a loading position and an assembly position. They are rotatably mounted on a sliding frame (200) along a horizontal axis to switch between the loading position and the assembly position. The clamping frame (300) in the loading position is horizontally arranged, and the clamping frame (300) in the assembly position is vertically arranged. Each of the two clamping frames (300) is equipped with a side frame clamping assembly to clamp the corresponding side frame (101). Two first rotary drive mechanisms (400) are respectively mounted on two sliding frames (200) to drive the corresponding clamping frame (300) to rotate. A transverse connection structure clamping assembly is used to clamp a transverse connection structure component, which is used to connect two side frames (101) on two sliding frames (200) in series.

2. The new energy vehicle frame assembly equipment according to claim 1, characterized in that, The lateral connecting structure includes a lower connecting member, and the lateral connecting structure clamping assembly includes a lower connecting member clamping mechanism (500). The lower connecting member clamping mechanism (500) includes a support structure (510), a clamping structure (520), a welding structure (530), and a positioning structure (540). The support structure (510) is used to support the lower connecting member, the clamping structure (520) is used to clamp the bottom of the side frame to the lower connecting member, the welding structure (530) is used to weld the bottom of the side frame to the position where it fits with the lower connecting member, and the positioning structure (540) is used to position the lower connecting member.

3. The new energy vehicle frame assembly equipment according to claim 2, characterized in that, The clamping structure (520) includes a first mounting base (521) fixed to the base frame (100), a first clamping arm (522) and a second clamping arm (523) are rotatably mounted on the first mounting base (521), and clamping blocks (524) are detachably mounted on both the first clamping arm (522) and the second clamping arm (523); the first mounting base (521) is equipped with a drive mechanism to drive the first clamping arm (522) and the second clamping arm (523) to rotate and move to achieve clamping or loosening of the opposite side frame and the lower connecting member.

4. The new energy vehicle frame assembly equipment according to claim 2, characterized in that, The welding structure (530) includes a first welding seat (531), on which a first welding head (532) and a second welding head (533) are rotatably mounted. The first welding seat (531) is equipped with a drive mechanism to drive the first welding head (532) and the second welding head (533) to rotate so that the first welding head (532) and the second welding head (533) move closer to or away from the side frame and the lower connector.

5. The new energy vehicle frame assembly equipment according to claim 2, characterized in that, The positioning structure (540) is a positioning pin that can be detachably installed on the base frame (100), and multiple positioning pins are spaced apart.

6. The new energy vehicle frame assembly equipment according to claim 2, characterized in that, The support structure (510) includes a support base (511) that can be detachably installed on the base frame (100), and a support block (512) is detachably installed on the upper end of the support base (511).

7. The new energy vehicle frame assembly equipment according to claim 1, characterized in that, The sliding drive mechanism (110) includes a rotary motor (111), a transmission rod (112), a swing arm (113), and a connecting rod (114). The rotation shaft of the rotary motor (111) is connected to the transmission rod (112). The swing arm (113) is connected to the transmission rod (112) and can rotate synchronously with the transmission rod (112). One end of the connecting rod (114) is hinged to the swing arm (113), and the other end is hinged to the connecting seat (210) on the sliding frame (200).

8. The new energy vehicle frame assembly equipment according to claim 1, characterized in that, The sliding frame (200) is equipped with a limit stop bar (220) and a rotatably mounted limit block (230). The limit block (230) has an avoidance state and a limit state. The sliding frame (200) is equipped with a second rotary drive mechanism (240), which is used to drive the limit block (230) to switch between the avoidance state and the limit state. The limit block (230) in the avoidance state can avoid the movement path of the clamping frame (300) rotating from the loading position to the assembly position. The limit block (230) in the limit state can cooperate with the limit stop bar (220) to limit the rotation of the clamping frame (300) in two directions.

9. The new energy vehicle frame assembly equipment according to claim 1, characterized in that, The transverse connecting structure includes an upper connecting member (102), and the transverse connecting structure clamping assembly includes a movable clamping and positioning mechanism (600); the movable clamping and positioning mechanism (600) has a material-avoiding position and a positioning clamping position; the movable clamping and positioning mechanism (600) includes a movable arm (610) and a positioning clamping assembly (620), and the clamping frame (300) is equipped with a telescopic drive mechanism (630); the movable arm (610) is hinged to the clamping frame (300) at the middle, and the telescopic drive mechanism (630) is used to drive the movable arm (610) to rotate, so as to realize the switching between the material-avoiding position and the positioning clamping position; when in the positioning clamping position The movable clamping and positioning mechanism (600) can clamp the upper connector (102) and the side frame (101) and simultaneously position the upper connector (102); the positioning and clamping assembly (620) includes a connecting frame (621), a lifting frame (622), a rotating frame (623), a third rotating drive mechanism (624), and a lifting drive mechanism (625); the connecting frame (621) is connected to the end of the movable arm (610), the lifting frame (622) is movably mounted on the connecting frame (621); the rotating frame (623) is movably mounted on the connecting frame (621); the lifting drive mechanism (625) is used to drive the lifting frame (622) to move up and down; The third rotary drive mechanism (624) is used to drive the rotating frame (623) to rotate, so that the rotating frame (623) cooperates with the lifting frame (622) to clamp the upper connecting piece (102) and the side frame (101); the lifting frame (622) is provided with a positioning pin (628) at the bottom, and the lifting frame (622) is provided with a guide post (629) extending upward through the connecting frame (621). The upper end of the guide post (629) is connected to a pressure bar (640). The upper end of the connecting frame (621) is hinged to a manual pressure rod (650) on the side corresponding to the pressure bar (640). The middle part of the manual pressure rod (650) is connected to the pressure bar (640) with a linkage rod (660). The two ends of the linkage rod (660) are respectively hinged to the manual pressure rod (650) and the pressure bar (640).

10. The new energy vehicle frame assembly equipment according to claim 9, characterized in that, The side frame clamping assembly includes: A positioning component (700) is mounted on a clamp (300) for positioning the side frame (101); A bonding and abutting component (800) is mounted on a clamp (300) for bonding and abutting against the side frame (101); The clamping and fixing assembly (900) is installed on the clamping frame (300) for clamping and fixing the side frame (101).

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