Multi-station hinge reinforcing plate welding clamp and positioning method thereof

Abstract

This invention discloses a multi-station hinge reinforcement plate welding fixture and its positioning method, belonging to the field of welding tool technology. The welding fixture of this invention includes a first base, on which at least two base clamping assemblies are provided. The base clamping assemblies are used to fix the base part of the hinge reinforcement plate. The base clamping assemblies have a first connecting plate connected to the first base, a second connecting plate connected to the side of the first connecting plate, a first hydraulic cylinder connected to the bottom of the second connecting plate, a base clamping auxiliary rod connected to one end of the second connecting plate, and a base clamping main rod connected to the end of the first hydraulic cylinder. The first hydraulic cylinder drives the base clamping main rod to move and clamp or release the base part of the hinge reinforcement plate. The solution of this invention solves the problems of insufficient positioning accuracy and poor adaptability of traditional fixtures, enables multi-station production, and realizes improved welding accuracy and rapid changeover, meeting the needs of efficient production of automotive parts.

Description

Technical Field

[0001] This invention relates to the field of welding tool technology, specifically to a multi-station hinged reinforcing plate welding fixture and its positioning method. Background Technology

[0002] Automotive parts are diverse, require high precision, and are usually produced by different suppliers. With product iterations, their shapes and sizes change frequently, making efficient production a key requirement. Hinge reinforcement plates need to be precisely positioned and fixed during the welding process to ensure processing quality. However, traditional welding fixtures are complex in structure and have high manufacturing costs, making it difficult to meet the production requirements of rapid model changeover and high-precision welding. There is an urgent need to optimize the fixture structure and positioning methods through modular design, flexible positioning, and other technologies to improve adaptability, precision, and production efficiency.

[0003] To address the aforementioned issues, existing technologies offer numerous solutions. For example, prior art KR102459865B1 discloses a welding fixture apparatus for manufacturing assembly panel frames. This welding fixture apparatus enables the side frames of prefabricated panels to be manufactured and produced as side frame products of precise and accurate specifications based on each standard. Depending on the size and thickness of the prefabricated panel, multiple first clamps are mounted in a base and fixed unit side frames to provide side frames for the prefabricated panel in the form of side frames; and two unit side frames, forming the corners of the side frames, are composed of multiple second clamps that simultaneously support the outer surfaces of the side frames. However, this welding fixture is not suitable for the fixed welding of hinge reinforcement plates, leaving room for improvement. Another example is prior art KR2020110003272, which discloses a welding clamping device. This device uses a pressing device to achieve a tight fit between the mounting structure and the bottom component for welding. However, for hinge reinforcement plates requiring welding of multiple reinforcement plates in different orientations, this device is not suitable for welding hinge reinforcement plates. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-station hinge reinforcement plate welding fixture and its positioning method, which solves the problems of insufficient positioning accuracy and poor adaptability of traditional fixtures. It enables multi-station production, improves welding accuracy and enables rapid changeover, thus meeting the needs of efficient production of automotive parts.

[0005] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: a multi-station hinge reinforcement plate welding fixture, comprising a first base, wherein at least two base clamping assemblies are provided on the first base, the base clamping assemblies being used to fix the base portion of the hinge reinforcement plate.

[0006] The base clamping assembly has a first connecting plate connected to the first base, a second connecting plate connected to the side of the first connecting plate, a first hydraulic cylinder connected to the bottom of the second connecting plate, a base clamping auxiliary rod connected to one end of the second connecting plate, and a base clamping main rod connected to the end of the first hydraulic cylinder. The first hydraulic cylinder drives the base clamping main rod to move and clamp or release the base part of the hinge reinforcing plate.

[0007] The base clamping assembly of this invention employs a first hydraulic cylinder to drive the main base clamping rod and the secondary base clamping rod to form a collaborative clamping mechanism. Specifically, the main base clamping rod provides the primary clamping force, while the secondary base clamping rod provides auxiliary support via a second connecting plate. The two work together to achieve three-point positioning, ensuring that the hinge reinforcement plate base is completely fixed and evenly stressed during welding. This collaborative clamping mechanism not only eliminates the risk of workpiece deflection caused by traditional single-point clamping but also adapts to plates of varying thicknesses, achieving a clamping accuracy of ±0.05mm. Furthermore, multiple independently controlled base clamping assemblies are configured on the first base, supporting simultaneous positioning of multiple workpieces (i.e., a multi-station mode). Combined with the hydraulic drive system, this enables rapid clamping, improving welding efficiency. Based on this, the base clamping assembly of this invention can clamp workpieces of different specifications, allowing for the design of automated production lines and unmanned operation according to production needs.

[0008] According to one embodiment of the present invention, limiting side plates are provided on both sides of the second connecting plate, and the limiting side plates are detachably connected to the second connecting plate. The ends of both the base clamping auxiliary rod and the base clamping main rod have pads that contact the base portion of the hinge reinforcing plate. The base clamping auxiliary rod and the base clamping main rod are arranged opposite each other and at the same horizontal height, and the second connecting plate is fixedly connected to the base clamping auxiliary rod. The base clamping main rod and the base clamping auxiliary rod of the present invention can form an anti-deviation effect. Specifically, the base clamping main rod applies an active clamping force under the drive of the first hydraulic cylinder, while the base clamping auxiliary rod simultaneously provides a reverse supporting force. The two form a force couple balance through the end pads, thus reducing the probability of deviation caused by workpiece heating during welding, effectively achieving an anti-deviation effect.

[0009] According to one embodiment of the present invention, a first clamping component and a second clamping component are respectively provided on the side of the base clamping assembly. The first clamping component is used to clamp the first side of the hinge reinforcing plate, and the second clamping component is used to clamp the second side of the hinge reinforcing plate.

[0010] The present invention comprises a three-dimensional clamping system consisting of a base clamping assembly, a first clamping assembly, and a second clamping assembly on the side. The base clamping assembly securely fixes the base via a main clamping rod and a secondary clamping rod. Simultaneously, the first and second clamping assemblies on the side precisely clamp the workpiece from both sides, forming a three-point positioning three-dimensional constraint system. Thus, during welding thermal deformation, the three clamping assemblies automatically adjust the clamping force distribution, ensuring that the workpiece displacement in the X / Y / Z directions is always controlled within ±0.05mm, reducing the probability of rework. Furthermore, this clamping solution can be used for hinge reinforcement plates of different specifications, offering a wide range of applications.

[0011] According to one embodiment of the present invention, the first clamping assembly includes a third connecting plate connected to a first base, a fourth connecting plate connected to one side of the third connecting plate, a second hydraulic cylinder fixedly connected to the side of the fourth connecting plate, a first swing block connected above the fourth connecting plate via an elastic element, the output end of the second hydraulic cylinder hinged to one end of the first swing block, and at least one mounting block connected to the other end of the first swing block, the mounting block having a positioning post at its end. A baffle is provided on the outer side of the elastic element, the baffle being made of an elastic tensile material. One end of the baffle is connected to the first swing block, and the other end is connected to the fourth connecting plate.

[0012] This invention achieves a balance between flexible clamping and rigid fixation of the workpiece side by using a composite buffer scheme consisting of a second hydraulic cylinder driving a first swing block, along with an elastic element and an elastic baffle. Specifically, the positioning post of this invention is connected to the elastic swing mechanism via a mounting block. When the second hydraulic cylinder applies pressure, the elastic element and the baffle work together to ensure clamping force while absorbing vibrations during the welding process, thus improving the workpiece clamping stability. Furthermore, this invention not only connects to the first base body through the third and fourth connecting plates but also forms a support structure, thereby improving the bending stiffness of the first clamping assembly.

[0013] According to one embodiment of the present invention, a bending piece is provided on one side of the mounting block;

[0014] The second hydraulic cylinder drives the fourth connecting plate to move, thereby causing the positioning pins and bending pieces on the mounting block to clamp the hinge reinforcement plate.

[0015] The positioning post of this invention, in conjunction with the bending plate, achieves dual clamping of the hinge reinforcement plate: a second hydraulic cylinder drives a fourth connecting plate to move the mounting block synchronously, enabling the positioning post to perform primary positioning, while the bending plate provides auxiliary clamping force. This achieves combined clamping by the point of the positioning post and the surface of the bending plate. Furthermore, the elastic deformation of the bending plate can automatically compensate for workpiece tolerances of 0.1-0.3mm and helps to disperse clamping stress, controlling workpiece deformation to below 0.02mm.

[0016] According to one embodiment of the present invention, the second clamping assembly includes a sixth connecting plate connected to the first base, and an L-shaped fifth connecting plate connected to the side of the sixth connecting plate. One end of the fifth connecting plate is rotatably connected to a main pressure rod via a mounting side plate, and the other end of the fifth connecting plate is connected to a third hydraulic cylinder. The output end of the third hydraulic cylinder is hinged to the main pressure rod. The third hydraulic cylinder of the present invention drives the main pressure rod to perform lever motion around the mounting side plate. Thus, the lever mechanism formed by the L-shaped fifth connecting plate and the main pressure rod amplifies the output force of the hydraulic cylinder, ensuring a stable clamping force; and the lever motion trajectory adaptively matches the workpiece surface.

[0017] According to one embodiment of the present invention, a secondary pressure rod is detachably connected to the end of the main pressure rod. The combination of the main pressure rod and the detachable secondary pressure rod of the present invention allows for quick replacement of secondary pressure rods of different specifications to adjust the clamping range. This also enables the use of secondary pressure rods made of different materials, making it suitable for multi-variety welding production lines.

[0018] According to one embodiment of the present invention, a first auxiliary component is provided on the side of the base clamping assembly. The first auxiliary component includes a first mounting bracket connected to a first base, a horizontally arranged swinging pressure rod on the outer side of the first mounting bracket, and a first drive motor for driving the swinging pressure rod to rotate on the first mounting bracket. The present invention, by driving the swinging pressure rod to rotate via the first drive motor, can cooperate with the second clamping assembly on the side to provide auxiliary clamping for the welded plate on the hinge reinforcing plate.

[0019] According to one embodiment of the present invention, a second auxiliary component is provided on the side of the base clamping assembly. The second auxiliary component includes a second mounting bracket connected to the first base. A sliding rod capable of displacement is provided on one side of the second mounting bracket. The sliding rod is connected to an air bearing. A slide rail is provided on the second mounting bracket, and an air bearing is provided on the slide rail.

[0020] The second auxiliary component of the present invention uses a combination of air bearing and high-precision sliding rod, which works in conjunction with the base clamping component to assist in clamping the welded plate on the hinge reinforcement plate.

[0021] A welding positioning method using a multi-station hinge reinforcement plate welding fixture includes the following steps:

[0022] - Place the hinge reinforcement plate on the base clamping assembly, and use the first hydraulic cylinder to drive the base clamping main rod to clamp or release the base part of the hinge reinforcement plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adopts a base clamping main rod and a base clamping secondary rod to cooperate with the lateral double clamping assembly and the air bearing fine adjustment mechanism, which effectively improves the positioning accuracy and can control the thermal deformation of the workpiece. Compared with the prior art, the present invention extends the maintenance cycle, enables multi-station production, and effectively solves the problems of low accuracy, poor adaptability and insufficient efficiency of traditional welding fixtures. Attached Figure Description

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a multi-station hinge reinforcement plate welding fixture according to the present invention;

[0026] Figure 2 This is a schematic diagram of the base clamping assembly, the first clamping assembly, and the second clamping assembly of the present invention;

[0027] Figure 3 This is a schematic diagram of the base clamping assembly structure of the present invention;

[0028] Figure 4 This is a side view of the base clamping assembly solution of the present invention;

[0029] Figure 5 This is a schematic diagram of the first clamping component structure of the present invention;

[0030] Figure 6 This is a side view of the first clamping component solution of the present invention;

[0031] Figure 7 This is a schematic diagram of the second clamping component structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the first auxiliary component scheme of the present invention;

[0033] Figure 9 This is a side view of the first auxiliary component of the present invention;

[0034] Figure 10 This is a schematic diagram of the second auxiliary component scheme of the present invention;

[0035] Figure 11 This is a schematic diagram of the purging assembly scheme of the present invention;

[0036] Figure 12 This is a schematic diagram of the water-cooling component solution of the present invention;

[0037] Figure 13 This is a schematic diagram of the first clamping component and the second clamping component of the present invention in a mating state.

[0038] Explanation of reference numerals in the attached drawings: 10. First base; 20. Base clamping assembly; 21. First hydraulic cylinder; 22. First connecting plate; 23. Base clamping main rod; 24. Limiting side plate; 25. Pad plate; 26. Base clamping auxiliary rod; 27. Second connecting plate; 30. Blowing assembly; 31. Third mounting bracket; 32. Displacement base; 33. Second drive motor; 34. Blower; 35. First cover plate; 36. Extension ring; 40. Water cooling assembly; 41. Fourth mounting bracket; 42. Air-cooled box; 43. Water tank; 44. Water supply pipe; 50. First auxiliary assembly; 51. Swing. 52. Dynamic pressure rod; 53. First mounting bracket; 60. First drive motor; 61. First clamping assembly; 62. Second hydraulic cylinder; 63. Third connecting plate; 64. Fourth connecting plate; 65. First swing block; 66. Mounting block; 67. Bending piece; 68. Positioning post; 79. Baffle; 70. Second clamping assembly; 71. Third hydraulic cylinder; 72. Fifth connecting plate; 73. Sixth connecting plate; 74. Mounting side plate; 75. Main pressure rod; 76. Secondary pressure rod; 80. Second auxiliary assembly; 81. Second mounting bracket; 82. Air bearing; 83. Sliding rod; 84. Slide rail. Detailed Implementation

[0039] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Example 1:

[0042] As shown in the attached figure Figure 1 -Appendix Figure 10 Appendix Figure 13 As shown, the present invention provides a multi-station hinge reinforcement plate welding fixture and its positioning method. The multi-station hinge reinforcement plate welding fixture includes a first base 10, on which at least two base clamping assemblies 20 are provided. The base clamping assemblies 20 are used to fix the base portion of the hinge reinforcement plate.

[0043] The base clamping assembly 20 has a first connecting plate 22 connected to the first base 10, a second connecting plate 27 connected to the side of the first connecting plate 22, a first hydraulic cylinder 21 connected to the bottom of the second connecting plate 27, a base clamping auxiliary rod 26 connected to one end of the second connecting plate 27, and a base clamping main rod 23 connected to the end of the first hydraulic cylinder 21. The first hydraulic cylinder 21 drives the base clamping main rod 23 to move and clamp or release the hinge reinforcing plate base part.

[0044] The base clamping assembly 20 of this invention uses a first hydraulic cylinder 21 to drive the base clamping main rod 23 and the base clamping auxiliary rod 26 to form a cooperative clamping mechanism. Specifically, the base clamping main rod 23 is responsible for providing the main clamping force, and the base clamping auxiliary rod 26 forms auxiliary support through the second connecting plate 27. The two cooperate to achieve three-point positioning, ensuring that the hinge reinforcement plate base part is completely fixed and evenly stressed during the welding process. This cooperative clamping mechanism scheme adopted by this invention not only eliminates the risk of workpiece deflection caused by traditional single-point clamping, but also adapts to plates of different thicknesses, with a clamping accuracy of ±0.05mm. At the same time, multiple independently controlled base clamping assemblies 20 are configured on the first base 10, supporting the simultaneous positioning of multiple workpieces, i.e., multi-station mode. Combined with the hydraulic drive system, it achieves rapid clamping, improving welding efficiency. Based on this, the base clamping assembly 20 of the fixture of this invention can clamp workpieces of different specifications, thus enabling the design of automated production lines according to production needs and achieving unmanned operation.

[0045] Limiting side plates 24 are provided on both sides of the second connecting plate 27, and the limiting side plates 24 are detachably connected to the second connecting plate 27. The ends of both the base clamping auxiliary rod 26 and the base clamping main rod 23 have pads 25 that contact the base portion of the hinge reinforcing plate. The base clamping auxiliary rod 26 and the base clamping main rod 23 are arranged opposite each other and at the same horizontal height, and the second connecting plate 27 is fixedly connected to the base clamping auxiliary rod 26. The base clamping main rod 23 and the base clamping auxiliary rod 26 of this invention can form an anti-deviation effect. Specifically, the base clamping main rod 23 applies an active clamping force under the drive of the first hydraulic cylinder 21, while the base clamping auxiliary rod 26 simultaneously provides a reverse supporting force. The two form a force couple balance through the end pads 25, thus reducing the probability of deviation caused by workpiece heating during welding and effectively preventing deviation.

[0046] The base clamping assembly 20 is provided with a first clamping assembly 60 and a second clamping assembly 70 on its side. The first clamping assembly 60 is used to clamp the first side of the hinge reinforcing plate, and the second clamping assembly 70 is used to clamp the second side of the hinge reinforcing plate.

[0047] The three-dimensional clamping system formed by the base clamping assembly 20, the first clamping assembly 60, and the second clamping assembly 70 on the side of the present invention: the base clamping assembly 20 achieves stable fixation of the base through the base clamping main rod 23 and the base clamping secondary rod 26, while the first clamping assembly 60 and the second clamping assembly 70 on the side respectively implement precise clamping on both sides of the workpiece, forming a three-point positioning three-dimensional constraint system. In this way, when welding thermal deformation occurs, the three clamping assemblies can automatically adjust the clamping force distribution to ensure that the displacement of the workpiece in the X / Y / Z directions is always controlled within ±0.05mm, reducing the probability of rework, and the clamping scheme can be used for hinge reinforcement plates of different specifications, with a wide range of applications.

[0048] The first clamping assembly 60 includes a third connecting plate 62 connected to the first base 10. A fourth connecting plate 63 is connected to one side of the third connecting plate 62. A second hydraulic cylinder 61 is fixedly connected to the side of the fourth connecting plate 63. A first swing block 64 is connected above the fourth connecting plate 63 via an elastic element. The output end of the second hydraulic cylinder 61 is hinged to one end of the first swing block 64. At least one mounting block 65 is connected to the other end of the first swing block 64. A positioning post 67 is provided at the end of the mounting block 65. A baffle 68 is provided on the outside of the elastic element. The baffle 68 is made of an elastic tensile material. One end of the baffle 68 is connected to the first swing block 64, and the other end is connected to the fourth connecting plate 63.

[0049] This invention achieves a balance between flexible clamping and rigid fixation of the workpiece side by using a composite buffer scheme consisting of a second hydraulic cylinder 61 driving a first swing block 64, along with an elastic element and an elastic baffle 68. Specifically, the positioning post 67 is connected to the elastic swing mechanism via a mounting block 65. When the second hydraulic cylinder 61 applies pressure, the elastic element and the baffle 68 work together to ensure clamping force while absorbing vibrations during welding, thus improving workpiece clamping stability. Furthermore, the invention not only connects to the first base 10 via a third connecting plate 62 and a fourth connecting plate 63 but also forms a support structure, thereby improving the bending stiffness of the first clamping assembly 60.

[0050] A bending piece 66 is provided on one side of the mounting block 65; the second hydraulic cylinder 61 drives the fourth connecting plate 63 to move, thereby causing the positioning post 67 and the bending piece 66 on the mounting block 65 to clamp the hinge reinforcing plate. The positioning post 67 of this invention can cooperate with the bending piece 66 to achieve dual clamping of the hinge reinforcing plate: the second hydraulic cylinder 61 drives the fourth connecting plate 63 to move the mounting block 65 synchronously, enabling the positioning post 67 to perform primary positioning, while the bending piece 66 provides auxiliary clamping force. This achieves composite clamping of the positioning post 67's point and the bending piece 66's surface. Furthermore, the elastic deformation of the bending piece 66 can automatically compensate for workpiece tolerances of 0.1-0.3mm and helps to disperse clamping stress, controlling workpiece deformation to below 0.02mm.

[0051] The second clamping assembly 70 includes a sixth connecting plate 73 connected to the first base 10. An L-shaped fifth connecting plate 72 is connected to the side of the sixth connecting plate 73. One end of the fifth connecting plate 72 is rotatably connected to a main pressure rod 75 via a mounting side plate 74, and the other end of the fifth connecting plate 72 is connected to a third hydraulic cylinder 71. The output end of the third hydraulic cylinder 71 is hinged to the main pressure rod 75. The third hydraulic cylinder 71 drives the main pressure rod 75 to perform lever motion around the mounting side plate 74. Thus, the lever mechanism formed by the L-shaped fifth connecting plate 72 and the main pressure rod 75 amplifies the output force of the hydraulic cylinder, ensuring a stable clamping force; and the lever motion trajectory adaptively matches the workpiece surface.

[0052] The main pressure rod 75 is detachably connected to a secondary pressure rod 76 at its end. The combination of the main pressure rod 75 and the detachable secondary pressure rod 76 of this invention allows for quick replacement of secondary pressure rods 76 of different specifications to adjust the clamping range. This also enables the use of secondary pressure rods 76 made of different materials, making it suitable for multi-variety welding production lines.

[0053] A first auxiliary component 50 is provided on the side of the base clamping assembly 20. The first auxiliary component 50 includes a first mounting bracket 52 connected to the first base 10. A horizontally arranged swing pressure rod 51 is provided on the outer side of the first mounting bracket 52. A first drive motor 53 for driving the swing pressure rod 51 to rotate is provided on the first mounting bracket 52. The present invention drives the swing pressure rod 51 to rotate by the first drive motor 53, which can cooperate with the second clamping assembly 70 on the side to assist in clamping the welded plate on the hinge reinforcement plate.

[0054] The first clamping component 60 and the second clamping component 70 are located on one side of the base clamping component 20, and the first auxiliary component 50 and the second auxiliary component 80 are provided on the other side of the base clamping component 20.

[0055] The base clamping assembly 20 is provided with a second auxiliary assembly 80 on its side. The second auxiliary assembly 80 includes a second mounting bracket 81 connected to the first base 10. A sliding rod 83 capable of displacement is provided on one side of the second mounting bracket. The sliding rod 83 is connected to an air bearing 82. A slide rail 84 is provided on the second mounting bracket 81, and an air bearing 82 is provided on the slide rail 84.

[0056] The second auxiliary component 80 of the present invention uses a combination of air bearing 82 and high-precision sliding rod 83, which cooperates with the base clamping component 20 to assist in clamping the welded plate on the hinge reinforcing plate.

[0057] A welding positioning method using a multi-station hinge reinforcement plate welding fixture includes the following steps:

[0058] - Place the hinge reinforcement plate on the base clamping assembly 20, and drive the base clamping main rod 23 to move through the first hydraulic cylinder 21 to clamp or release the base part of the hinge reinforcement plate.

[0059] The welding positioning method for multi-station hinge reinforcement plate welding fixtures includes the following steps:

[0060] 1) Workpiece placement and base fixation:

[0061] - Place the hinge reinforcement plate on the hinge reinforcement plate base part and then install it onto the base clamping assembly 20;

[0062] - Start the first hydraulic cylinder 21 to drive the base clamping main rod 23 to move towards the workpiece, and cooperate with the base clamping auxiliary rod 26 to perform three-point clamping and fixing of the hinge reinforcement plate base part through the end pad 25;

[0063] 2) Lateral positioning and clamping:

[0064] - The second hydraulic cylinder 61 of the first clamping assembly 60 drives the fourth connecting plate 63 to move, thereby causing the positioning post 67 and bending piece 66 on the mounting block 65 to perform point and surface composite clamping on the first side of the workpiece.

[0065] - The third hydraulic cylinder 71 of the second clamping assembly 70 drives the main pressure rod 75 to make lever movement through the L-shaped fifth connecting plate 72, and applies an adjustable clamping force to the second side of the workpiece in conjunction with the detachable auxiliary pressure rod 76;

[0066] 3) Auxiliary positioning adjustment:

[0067] - The first drive motor 53 of the first auxiliary component 50 drives the swing pressure rod 51 to rotate to a preset angle to apply auxiliary pressure to the workpiece;

[0068] - The second auxiliary component 80 adjusts the position of the sliding rod 83 via the air bearing 82 to achieve micron-level precise positioning compensation;

[0069] 4) Welding process control:

[0070] - The second drive motor 33 of the purging assembly 30 drives the blower 34 to move along the lead screw, forming a directional airflow through the extension ring 36 to remove welding spatter;

[0071] - The water-cooled component 40 delivers coolant to the welding area through the water pipe 44 to control the amount of thermal deformation;

[0072] 5) Complete package pickup:

[0073] -After welding, each hydraulic cylinder is depressurized in sequence, the clamping components are reset, and the finished product is taken out.

[0074] Example 2:

[0075] This embodiment further optimizes the scheme based on embodiment 1 as follows:

[0076] See appendix Figure 11 As shown, a blowing assembly 30 is provided on the side of the base clamping assembly 20. The blowing assembly 30 includes a third mounting bracket 31 connected to the first base 10. The third mounting bracket 31 is connected to the first base 10 through a connecting plate. The third mounting bracket 31 has a base plate, and vertical plates perpendicular to it are provided at two ends of the base plate. A lead screw is provided between the two vertical plates. A ball nut is provided on the lead screw. A second drive motor 33 connected to the lead screw is provided outside the third mounting bracket 31. A displacement base 32 is connected to the ball nut. A blower 34 is connected to the outside of the displacement base 32. The air outlet of the blower 34 faces the base clamping assembly 20. A circular first cover plate 35 is provided at the air inlet of the blower 34. The inner side of the first cover plate 35 is connected to the air outlet through a rod, and the outer edge of the first cover plate 35 has an outwardly extending extension ring 36.

[0077] The present invention drives a precision lead screw mechanism through a second drive motor 33, which drives a blower 34 to move precisely along a preset trajectory. In conjunction with the directional airflow channel formed by the extension ring 36 and the first cover plate 35, the airflow around the welding area can be sucked to remove tiny particles in the air in that area, preventing these tiny particles from remaining and affecting the welding contact and welding quality. In addition, the blower 34 can directionally cool the weld seam with airflow to reduce the heat impact.

[0078] Example 3:

[0079] This embodiment further optimizes the scheme based on embodiment 1 as follows:

[0080] See appendix Figure 1 Appendix Figure 12 As shown, a water-cooling assembly 40 is provided on the first base 10. The water-cooling assembly 40 includes a fourth mounting bracket 41 connected to the first base 10. A water tank 43 with a water pump is provided on the fourth mounting bracket 41. An air-cooled box 42 is provided on one side of the water tank 43. The water tank 43 is connected to the air-cooled box 42 through a water supply pipe 44. The first base 10 is provided with a mounting groove for installing the water supply pipe 44. The hinge reinforcing plate base part of the base clamping assembly 20 has a channel communicating with the water supply pipe 44. In this invention, the equipment is fixed on the first base 10 through the fourth mounting bracket 41. The water supply pipe 44 communicates with the hinge reinforcing plate base part and extends directly to the bottom of the welding area to achieve cooling of the hinge reinforcing plate base part and reduce the probability of welding thermal deformation.

[0081] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0082] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0083] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A multi-station hinge reinforcement plate welding fixture, comprising a first base (10), wherein at least two base clamping assemblies (20) are provided on the first base (10), the base clamping assemblies (20) being used to fix the base portion of the hinge reinforcement plate, characterized in that, The base clamping assembly (20) has a first connecting plate (22) connected to the first base (10), a second connecting plate (27) connected to the side of the first connecting plate (22), a first hydraulic cylinder (21) connected to the bottom of the second connecting plate (27), a base clamping auxiliary rod (26) connected to one end of the second connecting plate (27), and a base clamping main rod (23) connected to the end of the first hydraulic cylinder (21). The first hydraulic cylinder (21) drives the base clamping main rod (23) to move to clamp or release the hinge reinforcing plate base part. The base clamping assembly (20) is provided with a first clamping assembly (60) and a second clamping assembly (70) on its side. The first clamping assembly (60) is used to clamp the first side of the hinge reinforcing plate, and the second clamping assembly (70) is used to clamp the second side of the hinge reinforcing plate. The first clamping assembly (60) includes a third connecting plate (62) connected to the first base (10), a fourth connecting plate (63) connected to one side of the third connecting plate (62), a second hydraulic cylinder (61) fixedly connected to the side of the fourth connecting plate (63), a first swing block (64) connected above the fourth connecting plate (63) by an elastic element, the output end of the second hydraulic cylinder (61) is hinged to one end of the first swing block (64), and at least one mounting block (65) is connected to the other end of the first swing block (64), and a positioning post (67) is provided at the end of the mounting block (65). The base clamping assembly (20) is provided with a first auxiliary assembly (50) on its side. The first auxiliary assembly (50) includes a first mounting bracket (52) connected to the first base (10). A horizontally arranged swing pressure rod (51) is provided on the outside of the first mounting bracket (52). A first drive motor (53) for driving the swing pressure rod (51) to rotate is provided on the first mounting bracket (52). The base clamping assembly (20) is provided with a second auxiliary assembly (80) on its side. The second auxiliary assembly (80) includes a second mounting bracket (81) connected to the first base (10). The second mounting bracket is provided with a sliding rod (83) that can move on one side. The sliding rod (83) is connected to an air bearing (82). The second mounting bracket (81) is provided with a slide rail (84), and the slide rail (84) is provided with an air bearing (82).

2. The multi-station hinge reinforcement plate welding fixture according to claim 1, characterized in that, The second connecting plate (27) has limiting side plates (24) arranged opposite to each other on both sides, and the limiting side plates (24) are detachably connected to the second connecting plate (27).

3. The multi-station hinge reinforcement plate welding fixture according to claim 1, characterized in that, The mounting block (65) has a bent piece (66) on one side; The second hydraulic cylinder (61) drives the fourth connecting plate (63) to move so that the positioning pin (67) and bending piece (66) on the mounting block (65) clamp the hinge reinforcement plate.

4. A multi-station hinge reinforcement plate welding fixture according to claim 1, characterized in that, The second clamping assembly (70) includes a sixth connecting plate (73) connected to the first base (10). The sixth connecting plate (73) is connected to an L-shaped fifth connecting plate (72) on its side. One end of the fifth connecting plate (72) is rotatably connected to a main pressure rod (75) via a mounting side plate (74). The other end of the fifth connecting plate (72) is connected to a third hydraulic cylinder (71). The output end of the third hydraulic cylinder (71) is hinged to the main pressure rod (75).

5. A multi-station hinge reinforcement plate welding fixture according to claim 4, characterized in that, The main pressure rod (75) is detachably connected to a secondary pressure rod (76) at its end.

6. A welding positioning method for a multi-station hinge reinforcement plate welding fixture according to any one of claims 1-5, characterized in that, Includes the following steps: The hinge reinforcement plate is placed on the base clamping assembly (20), and the base clamping main rod (23) is driven to move by the first hydraulic cylinder (21) to clamp or release the base part of the hinge reinforcement plate.

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