Automatic welding clamp for automobile backrest lock bolt assembly
The automatic welding fixture for automotive backrest bolt assemblies, with its modular design and high-precision positioning, solves the problems of insufficient compatibility and positioning accuracy of existing fixtures. It enables efficient production of multiple vehicle models and stable welding quality, while reducing replacement costs and scrap rates.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-20
AI Technical Summary
Existing automatic welding fixtures for automotive back lock bolt assemblies have poor compatibility, making it difficult to adapt to multiple similar parts. They also suffer from insufficient modular design and low repeatability, resulting in unstable welding quality and low production efficiency.
The automatic welding fixture for automotive backrest latches adopts a modular design. Through the combination of multiple modular fixture modules and grippers, it achieves high-precision positioning of backrest latches of different shapes and types. Sensors and positioning modules are used to improve repeatability. Cylinders drive the opening and closing of the grippers, slide rails provide operating space, and modular components facilitate quick replacement and adjustment.
It enables efficient and flexible production of multiple vehicle models, reduces fixture replacement costs, improves product qualification rate, reduces welding defects, and enhances production efficiency and market competitiveness.
Smart Images
Figure CN224011550U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automobile parts welding fixture, concretely to an automatic welding fixture of automobile backrest lock bolt assembly. BACKGROUND
[0002] In automobile production, the automobile backrest lock bolt assembly is related to seat safety and function, and the bottom plate, pull rod and connecting plate need to be welded in the backrest lock bolt production, and the welding quality and efficiency are extremely crucial.
[0003] The existing automobile backrest lock bolt assembly automatic welding fixture has many defects. On the one hand, the overall structure of the fixture is fixed, and it is difficult to disassemble and reorganize, so it can only be replaced as a whole when facing new welding requirements, which wastes cost and increases maintenance and upgrading difficulty, use cost and downtime. In addition, the existing fixture positioning structure is unreasonable, the repeated positioning accuracy is low, and the backrest lock bolt assembly is prone to positioning deviation after multiple welding, which causes inaccurate welding position, unstable weld quality, increased scrap rate, and decreased product quality and production efficiency.
[0004] Therefore, it is of great practical significance to develop an automobile backrest lock bolt assembly automatic welding fixture that can be compatible with multiple same type components, adopt modular design and have high-precision repeated positioning function. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing an automobile backrest lock bolt assembly automatic welding fixture, which aims to solve the technical problem of the compatibility, modularity and repeated positioning accuracy of the existing automobile backrest lock bolt assembly automatic welding fixture.
[0006] To achieve the above object, the utility model discloses a kind of automobile backrest lock bolt assembly automatic welding clamps, it is characterized by comprising fixed plate, and first working area and second working area are set on the fixed plate;The first working area includes first clamp module, jaw one, second clamp module and third clamp module;The first clamp module is made of multiple modules, including fixed frame on the fixed plate, cylinder one, first connecting piece, second connecting piece, limiting block are set on the fixed frame, and cooperating block is matched with the limiting block;Jaw one is connected with the cylinder one by the first connecting piece and second connecting piece, and the cylinder one drives the first connecting piece to drive jaw one to open and close;Second clamp module and third clamp module are formed by selecting different size, shape module and adjusting the assembly relationship between module, each clamp module of the first working area drives corresponding jaw, and the position of the backrest lock bolt placed in place is fixed;Second working area is set on the other side of the fixed plate, and is made of fourth clamp module, fifth clamp module, sixth clamp module, and fourth clamp module, fifth clamp module, sixth clamp module are formed by selecting different size, shape module and adjusting the assembly relationship between module, and the position of the backrest lock bolt placed reversely is fixed.
[0007] Preferably, the top of the limiting block is provided with a protrusion, and a cooperating block fixed to the jaw one is arranged above the limiting block, and the bottom of the cooperating block is provided with a groove matched with the protrusion on the top of the limiting block;When the jaw one is closed, the limiting block cooperates with the cooperating block to assist the first connecting piece and the second connecting piece to keep the jaw one in a fixed position, so as to avoid position deviation and improve the repeated positioning accuracy.
[0008] Preferably, the jaw one is composed of an upper jaw and a lower jaw, the tail end of the upper jaw is connected with the first clamp module through the first connecting piece and the second connecting piece, and the lower jaw is fixed to the fixed frame;After the first clamp module drives the jaw one to close, the front end of the upper jaw contacts the top surface of a corner of the bottom plate in the backrest lock bolt, and the lower jaw is located below the upper jaw in the closed state, so that the upper jaw and the lower jaw cooperate with each other to fix the bottom plate in the backrest lock bolt;The upper jaw and the lower jaw are composed of multiple modules, and the length and shape of the upper jaw and the lower jaw can be changed by increasing, reducing or replacing a module or adjusting the assembly relationship between the modules, so as to adapt to the fixing requirements of backrest lock bolts of different shapes.
[0009] Preferably, a reserved hole is arranged on the module of the upper jaw in contact with the bottom plate in the backrest lock bolt, and the reserved hole cooperates with the lower jaw;A positioning rod is arranged at a position corresponding to the reserved hole in the upper jaw, and the positioning rod passes through a corner of the bottom plate in the backrest lock bolt when the jaw one is closed, so as to realize more stable fixation of the bottom plate in the backrest lock bolt and improve the fixation accuracy and reliability.
[0010] Preferably, the second clamp module is further provided with a second clamping jaw, a second cylinder, a connecting plate, a matching jaw, a first sensor and a top rod; the second clamping jaw is connected with the second clamp module and moves under the driving of the second clamp module, and the fixation of the backrest lock bolt pull rod is realized by selecting a module with appropriate size and shape; the second cylinder is arranged in front of the second clamping jaw and is fixed on the fixed plate, the second cylinder drives the connecting plate, the matching jaw on the connecting plate is provided with an arc-shaped groove, and the arc-shaped groove is used for assisting the fixation of the pull rod of the backrest lock bolt; the first sensor is arranged in the arc-shaped groove of the matching jaw, and a signal is fed back to the control unit after the fixation of the position of the pull rod is completed; the top rod is fixed on the fixed plate and is used for fixing the pull rod of the backrest lock bolt to prevent the position deviation of the pull rod in the up-down direction.
[0011] Preferably, the second clamping jaw is provided with a pressing jaw and a pressing-down jaw, which are arranged at the upper end and the lower end of the second clamping jaw respectively; the pressing jaw is arranged corresponding to the matching jaw, and under the driving action of the second clamp module and the second cylinder, the pressing jaw and the matching jaw cooperate with each other to further enhance the fixation effect of the pull rod in the backrest lock bolt, prevent the displacement of the pull rod in the horizontal direction, and improve the stability and reliability of the fixation; the pressing-down jaw is arranged corresponding to the top rod, and under the driving of the second clamp module, the pressing-down jaw cooperates with the top rod to prevent the displacement of the pull rod in the up-down direction, and further improve the stability and precision of the fixation of the pull rod.
[0012] Preferably, the third clamp module is provided with a third clamping jaw, a second sensor and a second clamping jaw; the upper half of the third clamping jaw is connected with the third clamp module through a connecting ring, and the lower half is fixed on the fixed frame thereof and is used for fixing a corner of the backrest lock bolt bottom plate; one side of the third clamping jaw is provided with a first clamping jaw, the first clamping jaw is composed of modules with different sizes and shapes to realize the contact of the last corner top surface of the backrest lock bolt bottom plate; the second sensor is arranged in the first clamping jaw, and the second sensor is used for detecting the contact state of the first clamping jaw and the bottom plate and feeding back a signal to ensure the accuracy of the fixation; the second clamping jaw is arranged corresponding to the first clamping jaw below and is fixed on the fixed frame of the third clamp module, and the second clamping jaw cooperates with the first clamping jaw to realize the fixation of the last corner of the backrest lock bolt bottom plate.
[0013] Preferably, the fifth clamp module is provided with a sliding rail, the second cylinder in the fifth clamp module is fixed on the fixed plate, the fifth clamp module and the sixth clamp module are arranged on the connecting plate, the second cylinder drives the connecting plate to move back and forth relative to the fourth clamp module, and when the lock bolt is placed or taken, the second cylinder drives the connecting plate to drive the fifth and sixth clamp modules away from the fourth clamp module to provide sufficient space for placing or taking the lock bolt, thereby facilitating the placement and taking of the backrest lock bolt.
[0014] Preferably, the modular components are connected by a standardized size bolt or other easily disassembled and mounted connection mode; such connection mode facilitates quick assembly of each module during production process, reduces assembly cost and time; at the same time, combined with the modular design of each clamp module and clamping jaw, the flexibility and practicability of the whole welding clamp are further enhanced.
[0015] The one or more technical solutions in the automobile backrest lock bolt assembly automatic welding clamp provided by the embodiments of the present application at least have one of the following technical effects:
[0016] The automobile backrest lock bolt assembly automatic welding clamp in the present application, under the modular design of multiple clamp modules and clamping jaws, quickly adapts to the welding requirements of multiple same type automobile backrest lock bolt assemblies through precise adjustment of the clamping jaw module spacing and connection shape, or replacement of partial components, breaks through the limitation of poor compatibility of traditional clamps, enables a single production line to realize efficient and flexible production of multiple vehicle backrest lock bolts, and greatly improves production efficiency and production line flexibility.
[0017] The automobile backrest lock bolt assembly automatic welding clamp in the present application is based on standardized design between modules, so that when the clamp needs to be replaced, only the clamping jaw needs to be replaced or adjusted, without the need to replace the entire clamp module or replace the entire clamp, effectively reducing the clamp update cost, ensuring the continuity and stability of production, and avoiding high costs and time loss caused by clamp replacement.
[0018] By providing sensors and positioning modules on the clamp module, high-precision repeated positioning of the backrest lock bolt is realized, welding defects such as virtual welding and missed welding are effectively reduced, product qualification rate is improved, waste rate and after-sales maintenance cost are reduced, and product market competitiveness is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0020] Figure 1 A perspective view of the automobile backrest lock bolt assembly automatic welding clamp provided by the embodiments of the present application is provided.
[0021] Figure 2 A partial view of the automobile backrest lock bolt assembly automatic welding clamp provided by the embodiments of the present application is provided.
[0022] Figure 3A partial view of the automatic welding fixture of the automobile backrest lock bolt assembly is provided in the embodiment of the utility model.
[0023] Figure 4 A partial view of the automatic welding fixture of the automobile backrest lock bolt assembly is provided in the embodiment of the utility model.
[0024] In the drawing, various reference signs indicate:
[0025] 10 - fixed plate 20 - first fixture module 21 - fixed frame 22 - cylinder one
[0026] 23 - first connecting piece 24 - second connecting piece 25 - limiting block 26 - matching block
[0027] 30 - jaw one 31 - upper clamp 311 - reserved hole 32 - lower clamp 321 - positioning rod
[0028] 40 - second fixture module 41 - jaw two 411 - extrusion jaw 412 - lower pressing jaw
[0029] 42 - cylinder two 43 - connecting plate 44 - matching jaw 45 - first sensor 46 - top rod
[0030] 50 - third fixture module 51 - jaw three 511 - first jaw 52 - second sensor
[0031] 53 - second jaw 60 - fourth fixture module 70 - fifth fixture module 71 - sliding rail
[0032] 80 - sixth fixture module. DETAILED DESCRIPTION
[0033] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as a limitation of the utility model.
[0034] In the description of the embodiments of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.
[0035] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly specified and limited.
[0036] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0037] In one embodiment of the present application, as shown in Figures 1-4 An automatic welding fixture for automobile backrest lock bolt assembly is provided, which comprises a fixed plate 10, a first fixture module 20, a first jaw 30, a second fixture module 40, a third fixture module 50, a fourth fixture module 60, a fifth fixture module 70 and a sixth fixture module 80.
[0038] A plurality of fixture modules are fixed on the fixed plate 10, wherein the first fixture module 20, the first jaw 30, the second fixture module 40 and the third fixture module 50 cooperate to form a first working area, the first fixture module 20 is provided with the first jaw 30, the first fixture module 20 fixes one corner of the bottom plate of the backrest lock bolt by controlling the opening and closing of the first jaw 30, the second fixture module 40 fixes the pull rod of the backrest lock bolt by controlling the opening and closing of the jaw on the second fixture module 40, the third fixture module 50 fixes the other two corners of the bottom plate of the backrest lock bolt by controlling the opening and closing of the jaw on the third fixture module 50, thereby fixing the backrest lock bolt placed in the forward direction, the fourth fixture module 60, the fifth fixture module 70 and the sixth fixture module 80 cooperate to form a second working area, the fourth fixture module 60 fixes two corners of the bottom plate of the backrest lock bolt by controlling the opening and closing of the jaw on the fourth fixture module 60, the fifth fixture module 70 fixes the pull rod of the backrest lock bolt by controlling the opening and closing of the jaw on the fifth fixture module 70, and the sixth fixture module 80 fixes the other corner of the bottom plate of the backrest lock bolt by controlling the opening and closing of the jaw on the sixth fixture module 80, thereby fixing the backrest lock bolt placed in the reverse direction.
[0039] As Figure 2As shown, the first clamp module 20 is composed of multiple modules, including: a fixed frame 21, a cylinder 22, a first connecting piece 23, a second connecting piece 24, a limiting block 25, and a matching block 26.
[0040] The fixed frame 21 is fixedly arranged on the fixed plate 10, and the fixed frame 21 is provided with the cylinder 22, the second connecting piece 24, the limiting block 25, and part of the assembly of the first jaw 30. The fixed frame 21 plays a role in supporting and fixing the cylinder 22, the second connecting piece 24, the limiting block 25, and part of the assembly of the first jaw 30, so that the first jaw 30 can fix the backrest lock in a fixed position during work to cooperate with the welding work of the welding device.
[0041] The cylinder 22 is arranged on the fixed frame 21, and the cylinder 22 is connected with the first jaw 30 through the first connecting piece 23. The cylinder 22 plays a role in driving the first jaw 30 to open or close.
[0042] One end of the first connecting piece 23 is fixedly connected with the cylinder 22, and the other end is connected with the tail of the first jaw 30 through a screw rod, so that the first jaw 30 can rotate in the first connecting rod 23. The first connecting piece 23 plays a role in connecting the first jaw 30 with the cylinder 22.
[0043] One end of the second connecting piece 24 is arranged on the fixed frame 21 through bolt connection, so that the second connecting piece 24 can rotate relative to the bolt on the fixed frame 21. The other end is connected with the first jaw 30, and the second connecting piece 24 is located in front of the first connecting piece 23. The second connecting piece 24 plays a role in connecting the first jaw 30 with the fixed frame 21. At the same time, under the action of the second connecting piece 24, when the cylinder 22 pulls or pushes the first connecting piece 23 to drive the first jaw 30 to move, the first jaw 30 is opened or closed.
[0044] The limiting block 25 is fixedly arranged on the fixed frame 21 and located in front of the second connecting piece 24. The top of the limiting block 25 is provided with a protrusion, and the upper side of the limiting block 25 is provided with the matching block 26. The matching block 26 is fixed on the first jaw 30, and the bottom of the matching block 26 is provided with a groove matched with the protrusion on the top of the limiting block 25. When the first jaw 30 is closed, the limiting block 25 and the matching block 26 are matched to assist the first connecting piece 23 and the second connecting piece 24 to keep the first jaw 30 in a fixed position after each closure, so as to avoid position deviation of the first jaw 30 after closure and improve the repeated positioning accuracy.
[0045] The first clamping jaw 30 is fixed on the first clamping module 20, and is composed of an upper clamping jaw 31 and a lower clamping jaw 32. The tail end of the upper clamping jaw 31 is connected with the first clamping module 20 through the first connecting piece 23 and the second connecting piece 24. After the first clamping module 20 drives the first clamping jaw 30 to close, the front end of the upper clamping jaw 31 is in contact with the top surface of a corner of the bottom plate in the backrest lock bolt. The upper clamping jaw 31 is composed of multiple modules, and the length and shape of the upper clamping jaw 31 can be changed by adding, reducing or replacing a certain module. When it is necessary to fix backrest lock bolts with different shapes, the front end of the upper clamping jaw 31 can be in contact with the bottom plate in the backrest lock bolt.
[0046] The module of the upper clamping jaw 31 in contact with the bottom plate in the backrest lock bolt is provided with a reserved hole 311, which plays a role of cooperating with the lower clamping jaw 32.
[0047] One end of the lower clamping jaw 32 is fixed on the fixed frame 21 and located in front of the limiting block 25. The other end of the lower clamping jaw 32 is located below the upper clamping jaw 31 in the first clamping jaw 30 in the closed state, and the lower clamping jaw 32 is in contact with the bottom surface of a corner of the bottom plate in the backrest lock bolt. The lower clamping jaw 32 cooperates with the upper clamping jaw 31 to fix the bottom plate in the backrest lock bolt. The lower clamping jaw 32 is composed of multiple modules, and the length and shape of the lower clamping jaw 32 can be changed by adding, reducing or replacing a certain module. When it is necessary to fix backrest lock bolts with different shapes, the lower clamping jaw 32 can cooperate with the upper clamping jaw 31 to fix the bottom plate in the backrest lock bolt.
[0048] The lower clamping jaw 32 is provided with a positioning rod 321 at a position corresponding to the reserved hole 311 in the upper clamping jaw 31. The positioning rod 321 penetrates a corner of the bottom plate in the backrest lock bolt to fix the bottom plate in the backrest lock bolt.
[0049] As shown in the drawings, Figure 3 The second clamping module 40 has the same structure as the first clamping module 20. By using different shapes of fixed frames, connecting rings and other modules, the second clamping module 40 can control the clamping jaw on the second clamping module 40 to fix the pull rod in the backrest lock bolt. The second clamping module 40 is further provided with a second clamping jaw 41, a second cylinder 42, a connecting plate 43, a cooperation jaw 44, a first sensor 45 and a top rod 46.
[0050] The second clamping jaw 41 is connected with the second clamping module 40 and moves under the driving action of the second clamping module 40. The second clamping jaw 41 is provided with a squeezing jaw 411 and a pressing jaw 412. The squeezing jaw 411 is arranged at the upper end of the second clamping jaw 41, and the pressing jaw 412 is arranged at the lower end of the second clamping jaw 41.
[0051] The second cylinder 42 is arranged in front of the second jaw 41 and fixed on the fixed plate 10, and a connecting plate 43 is arranged on the second cylinder 42, and a matching jaw 44 is arranged on the connecting plate 43, and an arc-shaped slot for assisting in fixing the position of the pull rod in the backrest lock bolt is arranged on the matching jaw 44, and the matching jaw 44 is arranged in correspondence with the extrusion jaw 411, and the extrusion jaw 411 cooperates with the matching jaw 44 under the driving action of the second clamp module 40 and the second cylinder 42, so that the position of the pull rod in the backrest lock bolt is fixed, and the horizontal position deviation of the pull rod is prevented.
[0052] The arc-shaped slot of the matching jaw 44 is provided with a first sensor 45, and after the position of the pull rod in the backrest lock bolt is fixed by cooperation of the extrusion jaw 411 and the matching jaw 44, the first sensor 45 functions to generate a signal feedback to the control unit.
[0053] The top rod 46 is arranged below the pressing jaw 412 and fixed on the fixed plate 10, and the top rod 46 functions to cooperate with the pressing jaw 412 to fix the pull rod in the backrest lock bolt and prevent the position deviation of the pull rod in the vertical direction.
[0054] The third clamp module 50 is identical in structure to the first clamp module 20, and the third clamp module 50 is provided with a third jaw 51, a second sensor 52 and a second jaw 53. The upper half of the third jaw 51 is connected to the third clamp module 50 through a connecting ring, and the lower half is fixed on a fixed frame on the third clamp module 50, so as to fix the other corner of the bottom plate in the backrest lock bolt. One side of the third jaw 51 is provided with a first jaw 511, which is composed of modules of different sizes and shapes, so as to contact the top surface of the last corner of the bottom plate in the backrest lock bolt. The first jaw 511 is provided with a second sensor 52, and a second jaw 53 is arranged below the first jaw 511 in correspondence, and the second jaw 53 is fixed on a fixed frame on the third clamp module 50, and the second jaw 53 cooperates with the first jaw 511 to fix the last corner of the bottom plate in the backrest lock bolt.
[0055] The multi-module clamp module fixes the backrest lock bolt at multiple positions and in multiple directions, realizes accurate fixing of the backrest lock bolt, and the multi-module clamp jaw can be adjusted in angle and connection relationship between modules to fix the backrest lock bolt on different automobiles. When the backrest lock bolt structure on different automobiles changes greatly and the clamp jaw needs to be replaced, only part of the modules in the clamp jaw needs to be replaced, which is convenient and reduces cost. Meanwhile, the multi-module clamp module, the cooperation between the limiting block and the cooperating block in the clamp module and the sensor setting realize high-precision repeated positioning, effectively reduce welding defects such as virtual welding and missed welding, improve product qualification rate, reduce waste rate and after-sales maintenance cost, and improve product market competitiveness.
[0056] As shown in Figure 4 The other end of the fixing plate 10 is provided with a second station, the second station is composed of a fourth clamp module 60, a fifth clamp module 70 and a sixth clamp module 80, and the clamp modules in the second station fix the position of the backrest lock bolt placed reversely by selecting different modules and replacing the assembly relationship between the modules. For example, the fourth clamp module 60 realizes the function of the third clamp module 50 by selecting different modules and replacing the assembly relationship between the modules, that is, fixing two angles of the bottom plate in the backrest lock bolt. The fifth clamp module 70 realizes the function of the second clamp module 40 by selecting different modules and replacing the assembly relationship between the modules, that is, fixing the position of the pull rod in the backrest lock bolt. The sixth clamp module 80 realizes the function of the first clamp module 20 by selecting different modules and replacing the assembly relationship between the modules, that is, fixing an angle of the bottom plate in the backrest lock bolt.
[0057] In another embodiment, the fifth clamp module 70 is provided with a sliding rail 71, the second cylinder in the fifth clamp module 70 is fixed on the fixing plate 10, the fifth clamp module 70 and the sixth clamp module 80 are arranged on the connecting plate, the second cylinder drives the connecting plate to move forward and backward relative to the fourth clamp module 60, when the lock bolt needs to be placed, the second cylinder drives the connecting plate to drive the fifth clamp module 70 and the sixth clamp module 80 to move away from the fourth clamp module 60, so as to provide sufficient space for placing or taking the lock bolt, and facilitate the placement and taking of the lock bolt.
[0058] The utility model discloses a kind of automobile backrest lock bolt assembly automatic welding clamps, when using, cylinder one 22 controls piston rod contraction, piston rod pulls first connecting piece 23 and drives upper clamp 31 relative to second connecting piece 24 rotation, realize the opening of jaw one 30, the three angles of backrest lock bolt are placed in lower clamp 32, jaw three 51 lower half, second jaw 53, positioning rod 321 passes through the hole of the three angles of backrest lock bolt, each cylinder works, and each jaw is fixed to the different parts of backrest lock bolt.
[0059] The remaining part of the embodiment is the same as that of Example One, and the features not explained in the embodiment are explained in Example One, which will not be described here.
[0060] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An automatic welding fixture for automotive backrest locking bolt assemblies, characterized in that, The system includes a fixed plate, and a first working area and a second working area disposed on the fixed plate. The first working area includes a first clamping module (20), a gripper (30), a second clamping module (40), and a third clamping module (50). The first clamping module (20) is composed of multiple modules, including a fixed frame (21) fixed to the fixed plate, a cylinder (22), a first connector (23), a second connector (24), a limiting block (25), and a mating block (26) that cooperates with the limiting block (25) disposed on the fixed frame (21). The gripper (30) is connected to the cylinder (22) through the first connector (23) and the second connector (24), and the cylinder (22) drives the... The first connector (23) drives the gripper (30) to open and close; the second clamp module (40) and the third clamp module (50) are formed by selecting modules of different sizes and shapes and adjusting the assembly relationship between the modules. Each clamp module in the first working area drives the corresponding gripper to fix the position of the backrest bolt placed in the forward direction; the second working area is set on the other side of the fixed plate and is composed of the fourth clamp module (60), the fifth clamp module (70) and the sixth clamp module (80). The fourth clamp module (60), the fifth clamp module (70) and the sixth clamp module (80) are formed by selecting modules of different sizes and shapes and adjusting the assembly relationship between the modules to fix the position of the backrest bolt placed in the reverse direction.
2. The automatic welding fixture for automotive backrest locking assembly according to claim 1, characterized in that: The limiting block (25) has a protrusion on its top and a mating block (26) fixed on the first gripper (30) above the limiting block (25). The bottom of the mating block (26) has a groove that matches the protrusion on the top of the limiting block (25). When the first gripper (30) is closed, the limiting block (25) and the mating block (26) cooperate to assist the first connector (23) and the second connector (24) in keeping the first gripper (30) in a fixed position, avoiding positional deviation and improving the accuracy of repeated positioning.
3. The automatic welding fixture for automotive backrest locking assembly according to claim 1, characterized in that: The clamping claw (30) consists of an upper clamp (31) and a lower clamp (32). The tail end of the upper clamp (31) is connected to the first clamping module (20) through the first connector (23) and the second connector (24). The lower clamp (32) is fixed on the fixing frame (21). After the first clamping module (20) drives the clamping claw (30) to close, the front end of the upper clamp (31) contacts the top surface of one corner of the bottom plate in the backrest bolt. The lower clamp (32) is located below the upper clamp (31) in the closed state. The upper clamp (31) and the lower clamp (32) cooperate with each other to fix the bottom plate in the backrest bolt. The upper clamp (31) and the lower clamp (32) are both composed of multiple modules. Their length and shape can be changed by adding, reducing, replacing a certain module or adjusting the assembly relationship between the modules to adapt to the fixing requirements of backrest bolts of different shapes.
4. The automatic welding fixture for automotive backrest locking assembly according to claim 3, characterized in that: The upper clamp (31) has a reserved hole (311) on the module that contacts the bottom plate in the backrest bolt. The reserved hole (311) cooperates with the lower clamp (32). The lower clamp (32) is provided with a positioning rod (321) at the position corresponding to the reserved hole (311) in the upper clamp (31). When the clamping jaw (30) is closed, the positioning rod (321) passes through a corner of the bottom plate in the backrest bolt, so as to achieve a more stable fixation of the bottom plate in the backrest bolt and improve the fixation accuracy and reliability.
5. The automatic welding fixture for automotive backrest locking assembly according to claim 1, characterized in that: The second clamping module (40) is also equipped with a second clamping jaw (41), a second cylinder (42), a connecting plate (43), a mating jaw (44), a first sensor (45), and a push rod (46); the second clamping jaw (41) is connected to the second clamping module (40) and moves under the drive of the second clamping module (40), and the backrest locking bolt rod is fixed by selecting a module of appropriate size and shape; the second cylinder (42) is located in front of the second clamping jaw (41) and fixed on the fixing plate (10). Cylinder 2 (42) drives connecting plate (43). The mating claw (44) on the connecting plate (43) is provided with an arc groove, which is used to assist in fixing the pull rod of the backrest bolt. The arc groove of the mating claw (44) is provided with a first sensor (45). After the position of the pull rod is fixed, the first sensor (45) generates a signal to be fed back to the control unit. The top rod (46) is fixed on the fixing plate (10) and is used to fix the pull rod of the backrest bolt to prevent it from having a positional deviation in the vertical direction.
6. The automatic welding fixture for automotive backrest locking assembly according to claim 5, characterized in that: The clamping jaw two (41) is provided with a pressing jaw (411) and a lower pressing jaw (412), which are respectively located at the upper and lower ends of the clamping jaw two (41). The pressing jaw (411) is correspondingly set with the mating jaw (44). Under the driving action of the second clamping module (40) and the cylinder two (42), the pressing jaw (411) and the mating jaw (44) cooperate with each other to further enhance the fixing effect on the pull rod in the backrest bolt, prevent the pull rod from displacing in the horizontal direction, and improve the stability and reliability of the fixing. The lower pressing jaw (412) is correspondingly set with the top rod (46). Under the driving action of the second clamping module (40), the lower pressing jaw (412) cooperates with the top rod (46) to prevent the pull rod from displacing in the vertical direction, and further improve the stability and accuracy of fixing the pull rod.
7. The automatic welding fixture for automotive backrest locking assembly according to claim 1, characterized in that: The third clamp module (50) is provided with a third clamp (51), a second sensor (52), and a second clamp (53). The upper part of the third clamp (51) is connected to the third clamp module (50) through a connecting ring, and the lower part is fixed on its fixing frame for fixing one corner of the backrest bolt base plate. A first clamp (511) is provided on one side of the third clamp (51). The first clamp (511) is constructed by selecting modules of different sizes and shapes to achieve contact with the top surface of the last corner of the base plate in the backrest bolt. A second sensor (52) is provided in the first clamp (511). The second sensor (52) is used to detect the contact state between the first clamp (511) and the base plate and to feed back a signal to ensure the accuracy of fixing. A second clamp (53) is provided below the first clamp (511) and is fixed on the fixing frame of the third clamp module (50). The second clamp (53) cooperates with the first clamp (511) to fix the last corner of the backrest bolt base plate.
8. The automatic welding fixture for automotive backrest locking assembly according to claim 1, characterized in that: The fifth clamp module (70) is provided with a slide rail (71). By fixing the cylinder 2 in the fifth clamp module (70) to the fixed plate (10), the fifth clamp module (70) and the sixth clamp module (80) are set on the connecting plate. The cylinder 2 drives the connecting plate to move back and forth relative to the fourth clamp module (60). When placing or taking the bolt, the cylinder 2 drives the connecting plate to move the fifth and sixth clamp modules away from the fourth clamp module, providing sufficient space for placing or taking the bolt, which facilitates the placement and taking of the backrest bolt.
9. An automatic welding fixture for automotive backrest locking bolt assembly according to any one of claims 1-8, characterized in that: Modular components are connected using bolts of standardized size.