Flexible clamping and conveying linkage mechanism for motorcycle frame welding station

Abstract

The present application relates to the motorcycle frame processing technical field, specifically to a kind of flexible clamping conveying linkage mechanism for motorcycle frame welding station, including mounting seat, the top of mounting seat is provided with rotary seat, the top of rotary seat is provided with driving rotary rod, the outer surface of driving rotary rod is fixedly provided with connecting block, the top surface of two positioning seat that is respectively provided with frame placement workstation mounting seat is also provided with positioning table;Clamping assembly, clamping assembly is set above two mounting plates;Two synchronous adjusting components, two synchronous adjusting components are set above positioning table.Compared with prior art, the present application is provided with clamping assembly with synchronous adjusting component, constitutes "angle-action" linkage link, utilizes driving gear-driven gear driving shaft and rotary plate, accurately converts rotation angle into the progressive sequence of "pre-clamping-full clamping-hold-pre-looseness-full looseness" of clamp, realizes the rigid synchronization of rotary table movement and clamping opening and closing.

Description

TECHNICAL FIELD

[0001] The present application relates to the motorcycle frame processing technical field, especially to a flexible clamping and conveying linkage mechanism for motorcycle frame welding station. BACKGROUND

[0002] In motorcycle frame welding production, the frame is generally composed of multiple tubes and stamping parts, which are positioned and fixed, and then welded on a special tool with multiple welding seams. The existing production line generally configures a double-station or multi-station rotary table / sliding table / chain conveying mechanism, each station is provided with a tool clamp corresponding to the vehicle model, which is used for conveying or transferring during welding.

[0003] In the prior art, the patent document CN108177950B discloses a quick and labor-saving frame turnover device, which uses the eccentric principle to realize turnover by using the weight of the frame, thereby realizing the lightweight of the frame turnover device structure, greatly reducing the investment, ensuring the operability, realizing the convenience and labor saving of the frame turnover, and achieving the green and environmentally friendly working effect. However, like the traditional method, the traditional structure usually adopts a separate design of "conveying mechanism responsible for handling and position changing, and each tool independently executes clamping / unclocking". The specific process is usually as follows: the conveying device turns the tool-loaded station to the loading and unloading position, the operator places the frame on the first and second placement areas or positioning reference, and then triggers multiple clamping elements one by one through a manual button, a foot valve or an independent pneumatic valve island to complete clamping. When the clamping-in-place signals of each position meet the interlocking conditions of the control system, the station can be turned to the welding position or the welding program can be started. After welding is completed, the operator needs to release the clamping one by one, and then the frame can be unloaded or transferred to the next process. However, this mode has many limitations: first, the timing of conveying and clamping is in series, and the pre-clamping and pressure maintaining cannot be completed during the position changing process, resulting in long and fluctuating rhythm; second, it relies on manual multi-point operation, which is prone to incomplete clamping, incorrect release and other mistakes, causing welding seam misalignment, size deviation and safety risks; third, although the double-station is opposite in form, the clamping side and the welding side cannot be truly parallel, and the rotation time is not effectively utilized. Therefore, the present application discloses a flexible clamping and conveying linkage mechanism for motorcycle frame welding station. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a flexible clamping and conveying linkage mechanism for motorcycle frame welding station, to solve the problems of long and fluctuating rhythm, prone to incomplete clamping / incorrect release and other mistakes, safety risks and low parallel efficiency caused by the series of conveying and clamping, manual multi-point locking or unlocking one by one in the traditional motorcycle frame welding station.

[0005] In order to achieve the above purpose, the present application provides a flexible clamping and conveying linkage mechanism for a motorcycle frame welding station, comprising a mounting seat, a rotating seat arranged on the top of the mounting seat, a driving rotating rod arranged on the top of the rotating seat, a connecting block fixedly sleeved on the outer surface of the driving rotating rod, positioning seats arranged on both sides of the connecting block, frame placing stations respectively arranged on the two positioning seats, the two frame placing stations being arranged in axial symmetry, an installation plate arranged on the top of the frame placing station, a first placing seat arranged on one side of the installation plate and a second placing seat arranged on the other side of the installation plate, the first placing seat and the second placing seat being used for placing a frame body to be processed, and a positioning table arranged on the top surface of the mounting seat.

[0006] A clamping assembly arranged above the two installation plates, the clamping assembly being used for synchronously clamping the frame body when the frame body is rotated and conveyed to a processing area by the rotating seat and the driving rotating rod.

[0007] Two synchronous adjusting assemblies arranged above the positioning table, the synchronous adjusting assemblies being used for adjusting the opening and closing states of the clamping assemblies during the rotation of the rotating seat, the driving rotating rod, the connecting block and the positioning seats.

[0008] When the rotating seat, the driving rotating rod, the connecting block and the positioning seats rotate and reset, the clamping assembly rotating to the processing area is synchronously clamped and limited by the synchronous adjusting assemblies, and the clamping assembly rotating and conveying away from the processing area is synchronously released from the limitation by the synchronous adjusting assemblies.

[0009] Preferably, the clamping assembly comprises clamping seats fixedly installed on the two installation plates, the clamping seats being arranged in a U shape, an installation flat plate arranged on the top of the clamping seat, a rotating rod rotatably installed at the bottom of the installation flat plate, a driving plate fixedly sleeved on the outer surface of the side of the rotating rod away from the installation flat plate, two groups of slide rails respectively arranged at the bottom of the two sides of the installation flat plate, each group of slide rails comprising two slide rails, a first sliding seat rotatably installed on the two slide rails, a driving connecting rod rotatably installed on each of the two sides of the driving plate, the two driving connecting rods being rotatably installed with the two first sliding seats respectively, a vertical block arranged on the top surface of each of the first sliding seats, and a clamping block rotatably installed on the top of the vertical block.

[0010] Preferably, when the rotating rod rotates, the rotating rod drives the two first sliding seats to move close to each other through the driving plate and the driving connecting rod, and the clamping block clamps the frame body.

[0011] Preferably, a torsional spring is arranged at the rotating joint between the upright block and the clamping block, the clamping block is arranged in a spiral shape, both ends of the clamping block are rotatably installed with clamping wheels, when the first sliding seats are close to each other, one of the clamping wheels on the clamping block first contacts the frame body, when the two first sliding seats continue to move close to each other, the other clamping wheel is pushed to rotate and synchronously contact the frame body for clamping, and after the two first sliding seats move away from each other, the clamping block drives the two clamping wheels to reset under the action of the torsional spring.

[0012] Preferably, the synchronous adjusting assembly comprises two positioning plates fixedly installed on the positioning table, the two positioning plates are oppositely arranged, a rotating shaft is rotatably installed at the middle of the positioning plate, a rotating plate is fixedly sleeved at the top of the rotating shaft, a sliding groove is formed in one side of the rotating plate, a second sliding seat is rotatably installed on one side of the positioning plate, a driving rod is slidably installed on the second sliding seat, a sliding groove is slidably installed on one side of the second sliding seat, a first connecting rod is rotatably installed at one end of the driving rod, the first connecting rod is slidably installed on one side of the positioning seat, a second connecting rod is rotatably installed at the other end of the first connecting rod, the second connecting rod is slidably installed on the bottom of the installation flat plate, a rotating gear is fixedly sleeved on one side of the rotating shaft close to the installation flat plate, and a driving gear plate is arranged on one side of the second connecting rod and engaged with the second connecting rod.

[0013] Preferably, when the driving rod is deflected and moved, the first connecting rod is driven to slide, the second connecting rod is driven to slide in the installation flat plate, the driving gear plate is driven to move, the rotating gear is driven to rotate, and the clamping blocks are synchronously driven to move close to each other for clamping.

[0014] Preferably, a C-shaped stroke limiting groove is further formed in the top surface of the positioning plate, one side of the rotating plate is slidably installed in the stroke limiting groove, and the stroke limiting groove is used for controlling the deflection angle of the driving rod.

[0015] Preferably, a driving gear is fixedly sleeved on the top surface of the driving rotating rod, a driven gear is arranged at the bottom of the rotating shaft, the two driven gears are arranged on the two sides of the driving gear respectively, and the driven gears are engaged with the driving gear.

[0016] Preferably, the rotating joint between the first connecting rod and the second connecting rod is a rotating rod, the rotating rod penetrates through the positioning seat and the installation plate, a through groove matched with the rotating rod is formed in the positioning seat and the installation plate, and a sealing expansion plate moving along with the rotating rod is arranged in the through groove, and the sealing expansion plate is used for sealing the through groove.

[0017] Preferably, the rotating seat is arranged as a positive and negative stepping motor for driving the connecting block and the positioning seat to reciprocate rotationally in a stroke of 180 degrees.

[0018] Advantages of the present application:

[0019] 1. The flexible clamping and conveying linkage mechanism for motorcycle frame welding station is characterized in that: a clamping assembly is arranged in combination with a synchronous adjusting assembly, the clamping assembly and the synchronous adjusting assembly constitute an "angle-action" linkage link, a driving gear and a driven gear drive a rotating shaft and a rotating plate, and then the rotating angle is accurately converted into a "pre-clamping-full clamping-holding-pre-loosening-full loosening" progressive sequence of the clamp through a sliding groove, a second sliding seat, a driving rod, a first / second linkage rod, a driving toothed plate and a rotating gear, the rigidity synchronization of the rotating table movement and the clamping opening and closing is realized, the automatic clamping and holding are realized when entering the welding area, the automatic loosening is realized when leaving the welding area, the manual button type locking / unlocking is cancelled, the misoperation and waiting time are reduced, the cycle time is significantly shortened, and the consistency is improved. The double-station axis symmetry and 180° indexing enable the clamping and welding to be performed in parallel, thereby improving OEE; the C-shaped stroke limiting groove limits the action range, thereby avoiding misoperation in the transition angle section; the force chain is short, the rigidity is high, the centering is good, the clamping and positioning repeatability is stable, the anti-thermal drift capability is enhanced during the welding process, and the automatic linkage process with high reliability, low maintenance and easy interlocking is realized as a whole.

[0020] 2. The flexible clamping and conveying linkage mechanism for motorcycle frame welding station is characterized in that: a torsional spring and a convolute clamping block are arranged on the clamping assembly in combination with a clamping wheel, the torsional spring is arranged in the upright block-clamping block rotating pair, the clamping block adopts a convolute shape and is provided with clamping wheels at both ends, and the "first point and then two points" rolling type progressive clamping is formed: when the first sliding seat approaches, one side roller contacts and guides first, when it continues to approach, the other side roller is forced to rotate and is simultaneously pressed against the workpiece to form two-point constraint, the clamping process is replaced by rolling instead of sliding, the impact peak and surface friction are significantly reduced, the coating and thin-walled pipe are protected, and biting and top deviation are avoided; the torsional spring provides pre-tightening and return force, ensures that the clamping is not self-loosened in a vibration environment and is quickly reset in the loosening stage, reduces the jamming and shortens the idle stroke time; the roller is a consumable part and can be quickly replaced, and maintenance is simple and low in cost; the compliance-self-centering feature can accommodate a certain clamping tolerance and welding thermal deformation, keeps the clamping force stable and the positioning consistency, improves the welding seam geometric precision and appearance quality, and at the same time, delays the mechanism wear and improves long-term reliability.

[0021] 3. The flexible clamping and conveying linkage mechanism for motorcycle frame welding stations, by setting a through slot and a sealing expansion plate in the synchronous adjusting assembly, the rotary connection of the first and second linkage rods is arranged by a rotary rod penetrating the positioning seat and the mounting plate, and the through slot matched with it provides a swing angle and a stroke space, so that the force chain is straight, accurate in centering, and has higher rigidity, reduces the gap and cumulative error between multiple supports, thereby improving the clamping response and repeat accuracy. The sealing expansion plate covers the through slot and forms a dynamic sealing barrier, which can block welding slag, dust and splashes from entering the slide rail, tooth surface and sliding guide cavity within the entire stroke, maintain lubrication and reduce abrasive wear, significantly prolong the service life of the guide rail, tooth plate and rotary pair, reduce cleaning and maintenance frequency; at the same time, the sealing plate blocks the movement gap, reduces the risk of accidental injury and inhibits the jam caused by foreign matter invasion, improves the safety and availability of the equipment. Overall, the through-type force transmission and dynamic sealing consider precision maintenance and environmental adaptation, ensuring long-term stable operation and high-quality welding consistency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0024] Figure 2 is a schematic diagram of the plane structure of the present application;

[0025] Figure 3 is a schematic diagram of the position structure of the synchronous adjusting assembly of the present application;

[0026] Figure 4 is a schematic diagram of the bottom view structure of the synchronous adjusting assembly of the present application;

[0027] Figure 5 is a schematic diagram of the running structure of the synchronous adjusting assembly and the clamping assembly of the present application;

[0028] Figure 6 is a schematic diagram of the structure of the synchronous adjusting assembly and the clamping assembly of the present application;

[0029] Figure 7 is a schematic diagram of the local structure of the synchronous adjusting assembly and the clamping assembly of the present application;

[0030] Figure 8 is a schematic diagram of the structure of the present application Figure 7 is an enlarged structure schematic diagram of A in the present application;

[0031] Figure 9Fig. 1 is a bottom view of the clamping assembly of the present application;

[0032] Figure 10 Fig. 4 is a schematic view of the structure of the rotating gear and the driving gear plate of the present application;

[0033] Figure 11 Fig. 5 is a schematic view of the partial structure of the synchronous adjusting assembly of the present application;

[0034] Figure 12 Fig. 6 is a schematic view of the running state of the synchronous adjusting assembly of the present application.

[0035] Fig. 1 is a bottom view of the clamping assembly of the present application;

[0036] 1, mounting seat; 2, rotating seat; 3, driving rotating rod; 4, connecting block; 5, positioning seat; 6, mounting plate; 7, first placing seat; 8, second placing seat; 9, vehicle body; 10, clamping seat; 11, mounting flat plate; 12, rotating rod; 13, driving plate; 14, sliding rail; 15, first sliding seat; 16, driving connecting rod; 17, vertical block; 18, clamping block; 19, clamping wheel; 20, positioning table; 21, positioning plate; 22, rotating shaft; 23, driven gear; 24, driving gear; 25, second sliding seat; 26, stroke limiting groove; 27, rotating plate; 28, driving rod; 29, first connecting rod; 30, second connecting rod; 31, rotating gear; 32, driving gear plate; 33, sliding groove; 34, sealing expansion plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with specific examples.

[0038] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application should be understood as the common meaning understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] As Figures 1 to 12The motorcycle frame welding station uses a flexible clamping conveying linkage mechanism, which includes a mounting seat 1, a rotating seat 2 is arranged on the top of the mounting seat 1, a driving rotating rod 3 is arranged on the top of the rotating seat 2, a connecting block 4 is fixedly sleeved on the outer surface of the driving rotating rod 3, positioning seats 5 are arranged on the two sides of the connecting block 4, frame placing stations are respectively arranged on the two positioning seats 5, the two frame placing stations are arranged in an axisymmetric manner, an installation plate 6 is arranged on the top of the frame placing station, a first placing seat 7 is arranged on one side of the installation plate 6, and a second placing seat 8 is arranged on the other side of the installation plate 6, the first placing seat 7 and the second placing seat 8 are used for placing a frame body 9 to be processed, and a positioning table 20 is further arranged on the top surface of the mounting seat 1; a clamping assembly is arranged above the two installation plates 6, the clamping assembly is used for synchronously clamping the frame body 9 when the frame body 9 is rotated and conveyed to a machining area by the rotating seat 2 and the driving rotating rod 3; two synchronous adjusting assemblies are arranged above the positioning table 20, the synchronous adjusting assemblies are used for adjusting the opening and closing states of the clamping assembly in the process that the rotating seat 2, the driving rotating rod 3 drive the connecting block 4 and the positioning seat 5 to rotate, wherein, in the process that the rotating seat 2, the driving rotating rod 3 drive the connecting block 4 and the positioning seat 5 to rotate and reset, the clamping assembly rotating to the machining area is synchronously clamped and limited under the action of the synchronous adjusting assembly, and the clamping assembly rotating and conveying away from the machining area is synchronously released from the limitation under the action of the synchronous adjusting assembly, and the rotating seat 2 is a reversible stepper motor, which is used for driving the connecting block 4 and the positioning seat 5 to reciprocatingly rotate in a stroke of 180 degrees.

[0040] When the device is on standby, the workstations on the loading and unloading sides in the two symmetrical workstations are kept fully loose, the operator places the frame body 9 on the first placing seat 7 and the second placing seat 8 and triggers the start, the rotating seat 2 is driven by the reversible stepper motor to make the driving rotating rod 3 realize 180° rotation conveying, the synchronous adjusting assembly pre-clamps before entering the machining area, then realizes full clamping and pressure maintaining, immediately meets the interlocking condition of welding start, and meanwhile the workstation on the other side where welding is completed starts to gradually loosen with the angle to release the thermal stress and avoid the rebound of the workpiece, until the workstation returns to the loading and unloading position and is completely released from the limitation, the whole process connects “rotation-clamping / loosening-welding / loading and unloading” in series into continuous actions evolving with the angle, which not only reduces manual operation and waiting, but also reduces welding deformation and error accumulation through rigid positioning and progressive clamping, and realizes stable size consistency and higher beat efficiency.

[0041] As Figures 1 to 3 , Figures 5 to 9As shown, the clamping assembly comprises a clamping seat 10 fixedly installed on the two mounting plates 6, the clamping seat 10 is arranged in a U shape, the top of the clamping seat 10 is provided with a mounting flat plate 11, the bottom middle of the mounting flat plate 11 is rotatably installed with a rotating rod 12, the outer surface of the side of the rotating rod 12 away from the mounting flat plate 11 is fixedly sleeved with a driving plate 13, the bottom of the mounting flat plate 11 is provided with two groups of slide rails 14 on both sides, each group of slide rails 14 is provided with two, the first sliding seat 15 is rotatably installed on the two slide rails 14, the two sides of the driving plate 13 are rotatably installed with driving connecting rods 16, the two driving connecting rods 16 are rotatably installed with the two first sliding seats 15, the top of the vertical block 17 is rotatably installed with the clamping block 18, when the rotating rod 12 rotates, the rotating rod 12 drives the two first sliding seats 15 to approach each other through the driving plate 13 and the driving connecting rod 16, and the clamping block 18 clamps the frame body 9;

[0042] When the station rotates into the synchronous clamping section, the drive from the synchronous adjusting assembly is transmitted to the rotating rod 12 to make it rotate by a predetermined angle, the rotating rod 12 drives the driving plate 13 to pull the two driving connecting rods 16 in both directions by an equal amount, so as to push the two first sliding seats 15 to symmetrically approach along the slide rails 14, and the clamping block 18 on the vertical block 17 is thereby attached to the frame reference surface and forms self-centering clamping, after reaching the set clamping stroke, a small amount of angular input is continued to establish pressure retention, and the constraint rigidity during welding is ensured; when the station leaves the machining section, the rotating rod 12 reversely rotates, the first sliding seats 15 symmetrically separate, and the clamping block 18 retreats to a safe distance, the whole process is symmetrical, short force chain and self-centering, which not only improves the positioning accuracy and weld consistency, but also reduces the stress accumulation and wear of the clamp after being heated;

[0043] The rotating connection between the vertical block 17 and the clamping block 18 is provided with a torsional spring, the clamping block 18 is arranged in a spiral shape, the two ends of the clamping block 18 are rotatably installed with clamping wheels 19, when the first sliding seats 15 approach each other, one of the clamping wheels 19 on the clamping block 18 first contacts the frame body 9, when the two first sliding seats 15 continue to approach each other, the other clamping wheel 19 is pushed to rotate and synchronously contact the frame body 9 for clamping, and after the two first sliding seats 15 move away from each other, the clamping block 18 drives the two clamping wheels 19 to reset under the action of the torsional spring;

[0044] As the first sliding seat 15 approaches symmetrically, the clamping block 18 maintains a suitable posture under the preload of the torsion spring. First, the clamping wheel 19 on one side lightly touches the frame body 9 to achieve guidance and alignment. Then, as it continues to approach, the clamping wheel 19 on the other side is forced to rotate and presses against the workpiece simultaneously to form a two-point constraint, ultimately achieving the set clamping force and clamping stroke. Since the contact is rolling and progressive, it can effectively absorb clamping deviations and reduce instantaneous impact forces, thereby avoiding pushing the workpiece off-center or causing dents. After welding, when the sliding seat separates, the torsion spring drives the clamping block 18 to quickly return to the center and resets both clamping wheels 19 together, keeping the mechanism clean and preventing semi-suspended jamming caused by vibration. Overall, while ensuring positioning accuracy, it significantly reduces the impact of surface damage and thermal deformation coupling. The rotating pair of the upright block 17 and the clamping block 18 has a built-in torsion spring, which provides return force and micro-preload to prevent accidental loosening caused by vibration. The reset is quick and reliable, and the rollers are easily replaceable parts that can be quickly replaced according to the wear cycle, making maintenance simple.

[0045] like Figures 2 to 8 , Figures 10 to 12 As shown, the synchronous adjustment assembly includes two positioning plates 21 fixedly mounted on the positioning platform 20. The two positioning plates 21 are arranged opposite each other. A rotating shaft 22 is rotatably mounted in the middle of the positioning plate 21. A rotating plate 27 is fixedly sleeved on the top of the rotating shaft 22. A sliding groove 33 is opened on one side of the rotating plate 27. A second sliding seat 25 is rotatably mounted on one side of the positioning plate 21. A drive rod 28 is slidably mounted on the second sliding seat 25. The sliding groove 33 is slidably mounted inside one side of the second sliding seat 25. A first connecting rod 29 is rotatably mounted on one end of the drive rod 28. One side of the first connecting rod 29 is slidably mounted inside one side of the positioning seat 5. A second connecting rod 30 is rotatably mounted on the other end of the first connecting rod 29. One side of the second connecting rod 30 is slidably mounted on the bottom of the mounting plate 11. A rotating rod 12 is fixedly sleeved on the side near the mounting plate 11. There is a rotating gear 31, and a drive gear plate 32 that meshes with the second connecting rod 30 is provided on one side of the second connecting rod 30. When the drive rod 28 deflects and moves, it drives the first connecting rod 29 to slide and drive the second connecting rod 30 to slide inside the mounting plate 11, thereby driving the drive gear plate 32 to move and drive the rotating gear 31 to rotate. It synchronously drives the clamping blocks 18 to move closer to each other and clamp them. The top surface of the positioning plate 21 is also provided with a C-shaped stroke limit groove 26. One side of the rotating plate 27 is slidably installed inside the stroke limit groove 26. The stroke limit groove 26 is used to control the deflection angle of the drive rod 28. The top surface of the drive rotating rod 3 is fixedly sleeved with a drive gear 24. The bottom of the rotating shaft 22 is provided with a driven gear 23. The two driven gears 23 are respectively provided on both sides of the drive gear 24, and the driven gears 23 and the drive gear 24 mesh with each other.

[0046] When the rotating seat 2 drives the driving rotating rod 3 to rotate, the driving gear 24 on the top surface thereof meshes with the two driven gears 23 and synchronously drives the rotating shaft 22 to rotate, the rotating plate 27 at the upper end of the rotating shaft 22 is driven to rotate, the second sliding seat 25 on one side thereof is driven to move in a controlled manner along the sliding groove 33 on the rotating plate 27, and then the driving rod 28 is driven to produce a deflection and a linear component with a limited amplitude, the displacement is converted into a reciprocating motion of the driving gear plate 32 through the first connecting rod 29 sliding in the positioning seat 5 and the second connecting rod 30 sliding at the bottom of the mounting plate 11, and the linear motion is converted into the reciprocating motion of the driving gear plate 32, the gear plate meshes with the rotating gear 31, so that the rotating rod 12 of the clamping assembly rotates according to an angular curve and realizes the progressive timing of “pre-clamping-full clamping-pressure maintaining” (the driving stroke is as shown in the processes I to III in the description) Figure 12 or “pressure maintaining-pre-loosening-full loosening” (the driving stroke is as shown in the processes III to I in the description) Figure 12 The two driven gears 23 on the two sides are symmetrical, so that the timing of the two working positions is completely consistent, but the working processes are in a front-rear manner. The multi-stage linkage of “angular driving-restricted output-gear and rack transmission” ensures the action rigidity, repetition precision and anti-interference capability, and at the same time, the external air source or complex sensing closed loop is omitted, so that the maintenance is simple and the interlocking is clear.

[0047] The rotating connection position of the first connecting rod 29 and the second connecting rod 30 is provided as a rotating rod, and the rotating rod penetrates through the positioning seat 5 and the mounting plate 6, the positioning seat 5 and the mounting plate 6 are provided with through grooves matched with the rotating rod, and the through grooves are provided with a sealing expansion plate 34 moving with the rotating rod, and the sealing expansion plate 34 is used for sealing the through grooves.

[0048] When the first connecting rod 29 and the second connecting rod 30 are driven by the synchronous adjusting assembly to perform angular and linear compound motion, the rotating connection position is provided as a rotating rod structure penetrating through the positioning seat 5 and the mounting plate 6, the required stroke and swing angle are provided with space through the matched through grooves, and the sealing expansion plate 34 on the outside synchronously moves with the rotating rod to realize full-process covering sealing. When driving, the force is directly applied from the rotating rod to the internal gear plate and the rotating shaft 22, the path is short, the rigidity is high, the centering is good, the clamping action responds faster and the repetition precision is higher, at the same time, the sealing inhibits the invasion of welding slag dust, delays the wear of the guide rail and the gear surface, maintains lubrication and cleanliness, reduces the maintenance frequency, and improves the long-term stability and operation safety.

[0049] It should be understood by those of ordinary skill in the art that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in detail.

[0050] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. A flexible clamping and conveying mechanism for a welding station of a motorcycle frame, characterized in that, The utility model relates to a kind of frame synchronous clamping device, including: Mounting seat (1), the top of the mounting seat (1) is provided with rotating seat (2), the top of the rotating seat (2) is provided with drive rotating rod (3), the outer surface of the drive rotating rod (3) is fixedly sleeved with connecting block (4), the both sides of the connecting block (4) are provided with positioning seat (5), two the positioning seat (5) is respectively provided with frame placement station, two The frame placement station is arranged in axial symmetry, the top of the frame placement station is provided with mounting plate (6), one side of the mounting plate (6) is provided with first placing seat (7), the other side is provided with second placing seat (8), the first placing seat (7) and second placing seat (8) are used to place the frame body (9) to be processed, the top surface of the mounting seat (1) is further provided with positioning table (20); Clamping assembly, the clamping assembly is arranged above two The mounting plate (6), the clamping assembly is used to when the frame body (9) is rotated and conveyed to processing area by the rotating seat (2) and drive rotating rod (3), the frame body (9) is synchronously clamped; Two synchronous adjusting assemblies, two The synchronous adjusting assembly is arranged above the positioning table (20), the synchronous adjusting assembly is used to adjust the opening and closing state of the clamping assembly during the rotating of the rotating seat (2), drive rotating rod (3) drive connecting block (4), positioning seat (5); Wherein, when the rotating seat (2), drive rotating rod (3) drive connecting block (4), positioning seat (5) rotate and reset, the clamping assembly that rotates to processing area is synchronously clamped under the action of the synchronous adjusting assembly, and the clamping assembly that rotates and conveys away from processing area is synchronously released under the action of the synchronous adjusting assembly; The clamping assembly includes clamping seat (10) fixedly installed on two The mounting plate (6), the clamping seat (10) is arranged in U shape, the top of the clamping seat (10) is provided with mounting flat plate (11), the bottom of the mounting flat plate (11) is rotatably installed with rotating rod (12), the outer surface of the side, away from the mounting flat plate (11), of the rotating rod (12) is fixedly sleeved with drive plate (13), the bottom of the mounting flat plate (11) is provided with two groups of slide rails (14) respectively, each group The slide rail (14) is provided with two, two The slide rail (14) is commonly slidably installed with first sliding seat (15), the both sides of the drive plate (13) are rotatably installed with drive connecting rod (16), two The drive connecting rod (16) is rotatably installed with two The first sliding seat (15) respectively, the top surface of the first sliding seat (15) both sides is provided with vertical block (17), the top of the vertical block (17) is rotatably installed with clamping block (18). Said synchronous adjusting assembly comprises two positioning plates (21) fixedly installed on said positioning table (20), said two positioning plates (21) are oppositely arranged, a rotating shaft (22) is rotatably installed at the middle of said positioning plate (21), a rotating plate (27) is fixedly sleeved at the top of said rotating shaft (22), a sliding groove (33) is formed in one side of said rotating plate (27), a second sliding seat (25) is rotatably installed at one side of said positioning plate (21), a driving rod (28) is slidably installed on said second sliding seat (25), one side of said driving rod (28) is slidably installed in said sliding groove (33), a first connecting rod (29) is rotatably installed at one end of said driving rod (28), one side of said first connecting rod (29) is slidably installed at the inner side of said positioning seat (5), a second connecting rod (30) is rotatably installed at the other end of said first connecting rod (29), one side of said second connecting rod (30) is slidably installed at the bottom of said installation flat plate (11), a rotating gear (31) is fixedly sleeved at the side of said rotating shaft (12) close to said installation flat plate (11), a driving gear plate (32) meshing with said rotating gear (31) is arranged at one side of said second connecting rod (30).

2. Flexible clamping and conveying linkage for motorcycle frame welding stations according to claim 1, characterized in that, When said rotating shaft (12) rotates, said rotating shaft (12) drives two said first sliding seats (15) to move close to each other through said driving plate (13) and driving connecting rod (16), said clamping block (18) clamps said frame body (9).

3. Flexible clamping and conveying linkage for motorcycle frame welding stations according to claim 2, characterized in that, Torsional springs are arranged at the rotating connection between said vertical block (17) and said clamping block (18), said clamping block (18) is arranged in a spiral shape, clamping wheels (19) are rotatably installed at both ends of said clamping block (18), when said first sliding seats (15) move close to each other, one of said clamping wheels (19) on said clamping block (18) first contacts said frame body (9), when said two first sliding seats (15) continue to move close to each other, the other said clamping wheel (19) is pushed to rotate and synchronously contacts said frame body (9) for clamping, and when said two first sliding seats (15) move away from each other, said clamping block (18) drives two said clamping wheels (19) to reset under the action of said torsional springs.

4. Flexible clamping and conveying linkage for motorcycle frame welding stations according to claim 3, characterized in that, When said driving rod (28) deflects and moves, said first connecting rod (29) is driven to slide, said second connecting rod (30) is driven to slide in said installation flat plate (11), said driving gear plate (32) is driven to move, said rotating gear (31) is driven to rotate, and said clamping block (18) is synchronously driven to move close to each other for clamping.

5. Flexible clamping and conveying mechanism for motorcycle frame welding stations according to claim 4, characterized in that, A C-shaped stroke limiting groove (26) is formed in the top surface of said positioning plate (21), one side of said rotating plate (27) is slidably installed in said stroke limiting groove (26), and said stroke limiting groove (26) is used for controlling the deflection angle of said driving rod (28).

6. Flexible clamping and conveying mechanism for motorcycle frame welding stations according to claim 1, characterized in that, The top surface of the driving rotating rod (3) is fixedly sleeved with a driving gear (24), the bottom of the rotating shaft (22) is provided with a driven gear (23), the two driven gears (23) are respectively arranged on the two sides of the driving gear (24), and the driven gears (23) and the driving gear (24) are mutually engaged.

7. Flexible clamping and conveying mechanism for motorcycle frame welding stations according to claim 6, characterized in that, The rotating connection part of the first connecting rod (29) and the second connecting rod (30) is provided as a rotating rod, the rotating rod penetrates the positioning seat (5) and the mounting plate (6), the positioning seat (5) and the mounting plate (6) are provided with a through groove matched with the rotating rod, and the through groove is provided with a sealing expansion plate (34) moving along with the rotating rod, and the sealing expansion plate (34) is used for sealing the through groove.

8. Flexible clamping and conveying mechanism for motorcycle frame welding stations according to claim 1, characterized in that, The rotating seat (2) is provided as a forward and reverse stepping motor, and is used for driving the connecting block (4) and the positioning seat (5) to reciprocating rotate in a stroke of 180 degrees.

Images