Fixture for automobile rear cover small part repair welding equipment
By designing a support component and a multi-directional clamping force positioning mechanism for welding small automotive rear hood parts, the problem of low positioning accuracy has been solved, achieving high-precision welding and stability, and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-10
AI Technical Summary
The existing welding fixtures for small parts of the car rear hood have low positioning accuracy, resulting in poor assembly accuracy between the welded parts and the rear hood, which affects the car's appearance and functionality.
A clamping device was designed, comprising a support assembly and four symmetrically distributed fixing mechanisms. The device provides stable support through a combination structure of support feet, steel support columns, and an installation platform. It employs multi-directional clamping force and a modular positioning mechanism to ensure accurate positioning and fixing of the weldment in the predetermined position.
It improves the quality of welding repair, prevents warping and shaking, enhances the rigidity and stability of the fixture, simplifies maintenance and operation, reduces costs and difficulty, and improves production efficiency and safety.
Smart Images

Figure CN224102158U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive repair equipment technology, and in particular relates to a fixture for welding small parts of automotive rear hoods. Background Technology
[0002] The rear hood, commonly known as the trunk lid or tailgate, is an important component at the rear of a car, used to cover and protect the trunk area. During the welding process for small parts of the rear hood, clamps play a crucial role.
[0003] Currently, the positioning accuracy of the fixture is low, making it difficult to accurately fix small parts in the ideal welding position. This results in poor assembly accuracy between the welded small parts and the rear hood, affecting the car's appearance and the normal function of the rear hood. Utility Model Content
[0004] In view of this, the present invention aims to propose a fixture for welding small parts of automobile rear hoods, in order to solve the problem that the fixture has low positioning accuracy, making it difficult to accurately fix the small parts in the ideal welding position, resulting in poor assembly accuracy between the welded small parts and the rear hood, which affects the appearance of the automobile and the normal function of the rear hood.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] This utility model provides a fixture for welding small parts of an automobile rear hood, including a support assembly and a fixing mechanism. The fixing mechanism includes a first fixing mechanism, a second fixing mechanism, a third fixing mechanism, and a fourth fixing mechanism. The fixing mechanisms are symmetrically fixed to the upper surface of the mounting platform of the support assembly, with the first fixing mechanism located opposite the second fixing mechanism. The second, third, and fourth fixing mechanisms are arranged sequentially from left to right. A rectangular steel support column is fixed to the upper part of the support foot plate of the support assembly. The mounting platform connecting plate is fixed to the top of the steel support column, and the four corners of the mounting platform are connected to the mounting platform connecting plate. The four corners of the upper surface of the mounting platform are locked with lifting lugs.
[0007] Furthermore, in the first fixing mechanism, the first fixing seat is locked onto the mounting platform. Reinforcing plates are provided on the left and right sides of the vertical mounting section of the first fixing seat, and a horizontal mounting plate is provided on the top. A first cylinder is fixed on the horizontal mounting plate. The top of the first cylinder is connected to the vertical mounting plate via a vertical connecting plate. A bent pressure rod is locked to the side of the first fixing seat. A pressure block is fixed to the top of the bent pressure rod. The pressure block presses against the surface of the vertical mounting plate. A first mounting block is locked to the top of the vertical mounting plate. A second mounting block is fixed to the end of the first mounting block. A second positioning pin is installed between the first mounting block and the second mounting block. The second positioning pin positions the groove at the end of the weldment.
[0008] Further, in the second fixing mechanism, the second fixing base is locked on the mounting platform, the side of the second fixing base is locked with the extension connecting block, the top of the second fixing base and the extension connecting block is locked with the mounting plate, the L-shaped mounting block, the first vertical mounting block, the third groove block, the second vertical mounting block, the first groove block and the second groove block are mounted on the mounting plate, the L-shaped mounting block is locked with the gasket plate on the first vertical mounting block through a plurality of gaskets, the third groove block is fixed with the mounting plate through a plurality of gaskets and gasket plates, the first groove block is fixed in front of the second groove block, the left and right sides of the second groove block are connected with the second vertical mounting block through a plurality of gaskets and gasket plates, the grooves of the first groove block, the second groove block and the third groove block are matched with the groove size of the repair welding piece, and the center line axis of the groove of the first groove block is aligned with the mounting axis of the second positioning pin.
[0009] Further, in the third fixing mechanism, the third fixing base is locked on the mounting platform, the fixing plate is fixed on the third fixing base and connected with the first bending fixing block through gaskets and gasket plates, the first bending fixing block and the second bending fixing block clamp the repair welding piece, the second bending fixing block is connected with the second cylinder connecting block through gasket plates and gaskets, the gasket plate is locked on the fixing plate and the second cylinder connecting block, the gasket plate locks the gasket, the second cylinder connecting block is connected with the connecting block on the second cylinder piston rod through the mounting connecting shaft, and the second cylinder is provided with a reversing valve.
[0010] Further, in the fourth fixing mechanism, the fourth fixing base is locked on the mounting platform, the top of the fourth fixing base is fixed with the first L-shaped connecting block, the first connecting block is locked on the vertical connecting section of the first L-shaped connecting block through a plurality of gaskets, the side of the first connecting block is locked with the L-shaped first positioning pin connecting seat through gaskets, the vertical connecting section of the L-shaped first positioning pin connecting seat is fixed with the first positioning pin, and the first positioning pin is positioned through the slot of the repair welding piece.
[0011] Compared with the prior art, the clamp for the automobile rear cover small piece repair welding equipment has the following advantages:
[0012] (1) The four groups of symmetrical distribution fixing mechanisms (first to fourth) of the utility model form multidirectional clamping force, effectively inhibit the deformation caused by thin-walled part welding thermal stress, especially solve the common warping problem when welding small parts of rear cover. The combined structure of support footboard, section steel support column, mounting platform connecting plate and mounting platform in the support assembly can provide stable support base, enhance the rigidity and stability of the whole clamp, prevent the clamp from shaking in the welding process and affect the welding quality, and also can ensure the safety of the operator. The locking lifting lugs arranged at the four corners of the upper surface of the mounting platform can be conveniently connected with hoisting equipment, solve the lifting problem of the clamp in the carrying and installation process, and improve the convenience and efficiency of production operation.
[0013] (2) The positioning and clamping mechanisms in the utility model can accurately place the welding parts at the predetermined position, reduce the position deviation, and improve the welding quality. The modular structure is formed by assembling in the mutual locking mode, which is convenient for installing, disassembling and replacing single components during use. If a component is damaged or needs to be adjusted, only the corresponding component needs to be replaced, without the need to disassemble and maintain the whole clamp, thereby reducing the maintenance cost and operation difficulty, and improving the use efficiency of the clamp. BRIEF DESCRIPTION OF DRAWINGS
[0014] The drawings forming part of the utility model are used to provide further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.
[0015] In the drawings:
[0016] Figure 1 The isometric view of the clamp for the small part welding equipment of the rear cover of an automobile according to the utility model embodiment;
[0017] Figure 2 The isometric view of the clamp for the small part welding equipment of the rear cover of an automobile according to the utility model embodiment;
[0018] Figure 3 The isometric view of the clamp for the small part welding equipment of the rear cover of an automobile according to the utility model embodiment;
[0019] Figure 4 The isometric view of the clamp for the small part welding equipment of the rear cover of an automobile according to the utility model embodiment;
[0020] Figure 5 The isometric view of the clamp for the small part welding equipment of the rear cover of an automobile according to the utility model embodiment;
[0021] Figure 6The third fixed mechanism axial measurement schematic view of the clamp for the automobile rear cover small part repair welding equipment is described in the embodiment of the utility model.
[0022] Figure 7 The fourth fixed mechanism axial measurement schematic view of the clamp for the automobile rear cover small part repair welding equipment is described in the embodiment of the utility model.
[0023] Mark explanation:
[0024] 1, support footboard;2, section steel support column;3, mounting platform connecting plate;4, mounting platform;5, lifting lug;6, first fixed mechanism;7, second fixed mechanism;8, third fixed mechanism;9, fourth fixed mechanism;10, third fixed seat;11, first fixed plate;12, backing plate;13, gasket;14, first bending fixed block;15, second bending fixed block;16, second cylinder connecting block;17, mounting connecting shaft;18, second cylinder;19, first connecting block;20, fourth fixed seat;21, first L-shaped connecting block;22, L-shaped first positioning pin connecting seat;23, first positioning pin;24, second fixed seat;25, extension connecting block;26, mounting plate;27, L-shaped mounting block;28, first vertical mounting block;29, third recess block;30, second vertical mounting block;31, first recess block;32, second recess block;33, first cylinder;34, bending pressing rod;35, first fixed seat;36, pressing block;37, first mounting block;38, second mounting block;39, second positioning pin;40, vertical mounting plate;41, vertical connecting plate. DETAILED DESCRIPTION
[0025] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0026] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0027] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.
[0028] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.
[0029] Referring to Figures 1-7 As shown in the figure, the embodiment provides a clamp for automobile rear cover small piece repair welding equipment, including, support assembly and fixed mechanism, fixed mechanism includes first fixed mechanism 6, second fixed mechanism 7, third fixed mechanism 8 and fourth fixed mechanism 9, fixed mechanism is fixedly connected on the upper surface of the installation platform 4 of support assembly, and the first fixed mechanism 6 is located opposite the second fixed mechanism 7, and the second fixed mechanism 7, third fixed mechanism 8 and fourth fixed mechanism 9 are sequentially arranged from left to right;Support assembly upper support footboard 1 upper part fixed profile steel support column 2, profile steel support column 2 is rectangular profile steel, installation platform connecting plate 3 is fixed on the top of profile steel support column 2, and the four corners of installation platform 4 are connected with installation platform connecting plate 3, and the upper surface of installation platform 4 is locked with lug 5.
[0030] Four groups of fixed mechanism (first to fourth) symmetrically distributed form multidirectional clamping force, effectively inhibit the deformation caused by thin-walled part welding thermal stress, especially solve the warping problem often seen in rear cover small piece repair welding.Small pieces will be affected by welding thermal stress during repair welding, prone to shaking or displacement.The combination structure of support footboard, profile steel support column, installation platform connecting plate and installation platform in support assembly can provide stable support base, enhance the rigidity and stability of the whole clamp, prevent the clamp from shaking during repair welding and affect the welding quality, and also can ensure the safety of operating personnel.The locking lug arranged on the upper surface of the installation platform can be conveniently connected with the hoisting equipment, solve the lifting problem of the clamp during carrying and installation, improve the convenience and efficiency of production operation.
[0031] Specifically, in the first fixing mechanism 6, the first fixing seat 35 is locked on the installation platform 4, the vertical mounting section of the first fixing seat 35 is provided with reinforcing plates on the left and right sides and a horizontal mounting plate on the top, the first cylinder 33 is fixed on the horizontal mounting plate, the top end of the first cylinder 33 is connected with the vertical mounting plate 40 through the vertical connecting plate 41, the first fixing seat 35 is locked with the bent pressing rod 34 on the side, the bent pressing rod 34 is fixed with the pressing block 36 on the top, the pressing block 36 is pressed on the surface of the vertical mounting plate 40, the vertical mounting plate 40 is locked with the first mounting block 37 on the top, the first mounting block 37 is fixed with the second mounting block 38 on the end, the second positioning pin 39 is installed between the first mounting block 37 and the second mounting block 38, and the second positioning pin 39 positions the notch of the end of the repair welding piece.
[0032] Specifically, in the second fixing mechanism 7, the second fixing seat 24 is locked on the installation platform 4, the second fixing seat 24 is locked with the extension connecting block 25 on the side, the top of the second fixing seat 24 and the extension connecting block 25 is locked with the mounting plate piece 26, the L-shaped mounting block 27, the first vertical mounting block 28, the third groove block 29, the second vertical mounting block 30, the first groove block 31 and the second groove block 32 are installed on the mounting plate piece 26, the L-shaped mounting block 27 is locked with the gasket plate 12 on the first vertical mounting block 28 through a plurality of gaskets 13, the third groove block 29 is fixed with the mounting plate piece 26 through a plurality of gaskets 13 and the gasket plate 12, the first groove block 31 is fixed in front of the second groove block 32, the second groove block 32 is connected with the second vertical mounting block 30 through a plurality of gaskets 13 and the gasket plate 12 on the left and right sides, the grooves of the first groove block 31, the second groove block 32 and the third groove block 29 are matched with the size of the grooves of the repair welding piece, and the center line axis of the groove of the first groove block 31 is aligned with the installation axis of the second positioning pin 39.
[0033] Specifically, in the third fixing mechanism 8, the third fixing seat 10 is locked on the installation platform 4, the fixed plate 11 is fixed on the third fixing seat 10 and connected with the first bent fixing block 14 and the second bent fixing block 15 through the gasket 13 and the gasket plate 12, the first bent fixing block 14 and the second bent fixing block 15 clamp the repair welding piece, the second bent fixing block 15 is connected with the second cylinder connecting block 16 through the gasket plate 12 and the gasket 13, the gasket plate 12 is locked on the fixed plate 11 and the second cylinder connecting block 16, the gasket plate 12 locks the gasket 13, the second cylinder connecting block 16 is connected with the connecting block on the piston rod of the second cylinder 18 through the installation connecting shaft 17, and the second cylinder 18 is provided with a reversing valve.
[0034] Specifically, in the fourth fixing mechanism 9, the fourth fixing seat 20 is locked on the installation platform 4, the first L-shaped connecting block 21 is fixed on the top of the fourth fixing seat 20, the first connecting block 19 is locked on the vertical connecting segment of the first L-shaped connecting block 21 through a plurality of gaskets 13, the first connecting block 19 is locked with the L-shaped first positioning pin connecting seat 22 through the gasket 13 on the side surface, the first positioning pin 23 is fixed on the vertical connecting segment of the L-shaped first positioning pin connecting seat 22, and the first positioning pin 23 is positioned on the notch passing through the repair welding part.
[0035] Each positioning and clamping mechanism can accurately place the repair welding part at a predetermined position, reduce position deviation, and improve repair welding quality. The modular structure is formed by locking each other, and the single component can be installed, disassembled and replaced during use. If a component is damaged or needs to be adjusted, only the corresponding component needs to be replaced, without the need to disassemble and maintain the whole clamp, thereby reducing the maintenance cost and operation difficulty and improving the use efficiency of the clamp.
[0036] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A fixture for a small part welding equipment for a car trunk lid, characterized in that, It includes support assembly and fixed mechanism, the fixed mechanism includes first fixed mechanism (6), second fixed mechanism (7), third fixed mechanism (8) and fourth fixed mechanism (9), the fixed mechanism is fixed on the upper surface of the installation platform (4) of support assembly, and the first fixed mechanism (6) is located opposite the second fixed mechanism (7), the second fixed mechanism (7), third fixed mechanism (8) and fourth fixed mechanism (9) are sequentially arranged from left to right;Support assembly upper support footboard (1) upper fixed profile steel support column (2), the profile steel support column (2) is rectangular profile steel, the installation platform connecting plate (3) is fixed on the top of the profile steel support column (2), the installation platform (4) four corners are connected with the installation platform connecting plate (3), the upper surface of the installation platform (4) is locked with the lifting lug (5).
2. The fixture for the automobile deck lid small part repair welding equipment according to claim 1, characterized in that, In the first fixed mechanism (6), the first fixed seat (35) is locked on the installation platform (4), the vertical installation section of the first fixed seat (35) is provided with a reinforcing plate on the left and right sides and a horizontal installation plate on the top, the first cylinder (33) is fixed on the horizontal installation plate, the top end of the first cylinder (33) is connected with the vertical installation plate (40) through the vertical connecting plate (41), the side of the first fixed seat (35) is locked with the bent pressing rod (34), the top of the bent pressing rod (34) is fixed with the pressing block (36), the pressing block (36) is pressed on the surface of the vertical installation plate (40), the top of the vertical installation plate (40) is locked with the first mounting block (37), the end of the first mounting block (37) is fixed with the second mounting block (38), the second positioning pin (39) is installed between the first mounting block (37) and the second mounting block (38), and the second positioning pin (39) is positioned on the notch of the end of the repair welding part.
3. The fixture for the automobile deck lid small part repair welding apparatus according to claim 1, wherein In the second fixed mechanism (7), the second fixed seat (24) is locked on the installation platform (4), the side of the second fixed seat (24) is locked with the extension connecting block (25), the top of the second fixed seat (24) and the extension connecting block (25) is locked with the installation plate part (26), the L-shaped mounting block (27), the first vertical mounting block (28), the third recess block (29), the second vertical mounting block (30), the first recess block (31) and the second recess block (32) are installed on the installation plate part (26), the installation L-shaped mounting block (27) is locked with the pad plate (12) on the first vertical mounting block (28) through a plurality of spacers (13), the third recess block (29) and the installation plate part (26) are fixed through a plurality of spacers (13) and pad plates (12), the first recess block (31) is fixed in front of the second recess block (32), the left and right sides of the second recess block (32) are connected with the second vertical mounting block (30) through a plurality of spacers (13) and pad plates (12), the recesses of the first recess block (31), the second recess block (32) and the third recess block (29) are matched with the size of the recesses of the repair welding part, and the center axis of the recess of the first recess block (31) is aligned with the installation axis of the second positioning pin (39).
4. The fixture for the automobile deck lid small part repair welding apparatus according to claim 1, wherein In the third fixing mechanism (8), the third fixing base (10) is locked on the mounting platform (4), the fixing plate (11) is fixed on the third fixing base (10) and connected with the first bent fixing block (14) through the gasket (13) and the backing plate (12), the first bent fixing block (14) and the second bent fixing block (15) clamp the repair welding part, the second bent fixing block (15) is connected with the second cylinder connecting block (16) through the backing plate (12) and the gasket (13), the backing plate (12) is locked on the fixing plate (11) and the second cylinder connecting block (16), the backing plate (12) locks the gasket (13), the second cylinder connecting block (16) is connected with the connecting block on the piston rod of the second cylinder (18) through the mounting connecting shaft (17), and the second cylinder (18) is provided with a reversing valve.
5. The fixture for the automobile deck lid small part repair welding apparatus according to claim 1, wherein In the fourth fixing mechanism (9), the fourth fixing base (20) is locked on the mounting platform (4), the top of the fourth fixing base (20) is fixed with the first L-shaped connecting block (21), the first connecting block (19) is locked on the vertical connecting section of the first L-shaped connecting block (21) through a plurality of gaskets (13), the side surface of the first connecting block (19) is locked with the L-shaped first positioning pin connecting seat (22) through the gasket (13), the vertical connecting section of the L-shaped first positioning pin connecting seat (22) is fixed with the first positioning pin (23), and the first positioning pin (23) is positioned on the notch passing through the repair welding part.