Automobile engine hood hinge and fender mounting tool and mounting method

Abstract

The application discloses a hinge and a fender mounting tool and a mounting method for a car engine cover, and is characterized in that the hinge and the fender mounting tool for the car engine cover comprise a tool frame and a body positioning mechanism arranged on the tool frame, hinge positioning components for positioning hinges are arranged on both sides of the tool frame, fender positioning components for positioning fenders are arranged on both sides of the tool frame, and a body clamping component for clamping and positioning a body is further arranged. The hinge and the fender mounting tool for the car engine cover can realize stable positioning, improve the hinge mounting precision and the assembly production efficiency, and have strong practicability and good application prospect.

Description

Technical Field

[0001] This invention belongs to the technical field of welding production lines, and more specifically, relates to an installation fixture and method for an automobile engine hood hinge and fender. Background Technology

[0002] The welding and adjustment line is the final process before the body-in-white rolls off the assembly line, and it is a crucial step in ensuring the clearance and surface finish of the various assembly parts of the body-in-white. Assembly fixtures and auxiliary tools are used to ensure the rigid connection between the four doors and two hoods and the body, and to control the clearance and surface finish of the body assembly and its connecting parts. Therefore, the adjustment and application of assembly fixtures and auxiliary tools directly affect the overall assembly quality of the vehicle.

[0003] The definition of exterior matching is the adjustment process based on the exterior gap diagram, comprehensively considering aesthetics and manufacturability, to ensure the assembly gaps between the body and exterior parts, as well as the flatness, gaps, uniformity, and alignment requirements between various exterior components. Improving the manufacturing precision of the body-in-white is a key focus for the mass production of new models. With the increasing localization of stamping body panel molds, improving the dimensional quality of parts and matching the entire vehicle faces more problems and challenges. Currently, the manufacturing precision of the body-in-white can be summarized in two aspects: the matching precision of door and hood parts and the functional dimensional precision of the entire vehicle.

[0004] The door and hood adjustment process serves to match the vehicle's exterior appearance. Whether it's door and hood fixtures, inspection tools, or assembly fixtures, they are all designed to ensure the dimensional accuracy of the door and hood, thereby meeting the appearance quality requirements after the vehicle is assembled. Assembly fixtures, also known as fitting fixtures, are auxiliary installation tools used to clamp and position the doors and hoods, and then tighten and weld the hinges to ensure that the door and hood appearance matching coefficients are consistent.

[0005] Commonly used door and hood assemblies include four-door assembly assemblies, engine hood assembly assemblies, tailgate (trunk cover) assembly assemblies, and fender assemblies. For engine hood assembly assemblies, existing technologies suffer from poor positioning and clamping stability, failing to adequately position the hinges to the vehicle body, thus affecting the welding and installation accuracy of the hinges, and consequently impacting the assembly accuracy and efficiency of the engine hood. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art and provide an automotive engine hood hinge and fender mounting fixture and installation method that can achieve stable positioning, improve hinge installation accuracy and assembly production efficiency.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: the provided automobile engine hood hinge and fender mounting fixture is characterized in that: it includes a fixture frame and a vehicle body positioning mechanism disposed thereon, a hinge positioning component for positioning the hinge and a fender positioning component for positioning the fender are provided on both sides of the fixture frame, and it also includes a vehicle body clamping component for clamping and positioning the vehicle body.

[0008] To make the above technical solutions more detailed and specific, the present invention also provides the following further preferred technical solutions to achieve satisfactory practical effects:

[0009] The vehicle positioning mechanism includes a first positioning mechanism disposed on the rear end side beam of the fixture frame and a second positioning mechanism disposed on the front end side beam of the fixture frame.

[0010] The first positioning mechanism has two parts arranged at intervals along the width of the vehicle body.

[0011] Both the first positioning mechanism and the second positioning mechanism are positioning pins that are inserted into the pin holes of the vehicle body water tank crossbeam.

[0012] The hinge positioning assembly is symmetrically arranged at the rear corner of the fixture frame, including a hinge positioning pin corresponding to the hole on the hinge, and a hand clamp for clamping the hinge from the top and bottom.

[0013] The hinge positioning pins include a first hinge positioning pin and a second hinge positioning pin arranged front and rear; the side of the fixture frame is also provided with a hinge side limiting reference block that limits the hinge position relative to the side of the vehicle body; the hand clamps include an upper hand clamping block and a lower hand clamping block.

[0014] The fender positioning assembly includes a first fender positioning assembly arranged on the two side beams of the fixture frame and a second fender positioning assembly located at the front corner of the fixture frame.

[0015] The first fender positioning assembly includes a first fender positioning pin that is inserted into a hole on the fender, and a first fender limiting block that is arranged on both sides opposite to the fender; the second fender positioning assembly includes a second fender positioning pin that is positioned on both sides into a hole on the fender.

[0016] The vehicle body clamping assembly includes a first vehicle body clamping assembly arranged in front of the device frame and a second clamping assembly arranged behind the vehicle body frame; the device frame is also provided with fender adjustment assemblies on both sides for controlling the gap between the fender and the door.

[0017] A method for installing an automotive engine hood hinge and fender, using the aforementioned installation fixture, includes the following steps: Step 1) Two employees simultaneously insert the first positioning mechanism and the second positioning mechanism into the pin holes of the vehicle body radiator crossbeam; Step 2) Two employees simultaneously operate the first and second hinge positioning pins to position the hood hinge and clamp the hinge with hand clamps; Step 3) Two employees simultaneously use a nut gun to position and install the hood hinge, completing the hood hinge installation; Step 4) Two employees simultaneously install the fender onto the vehicle body; the first and second fender positioning components position the fender, and the cylinders of the first and second body clamping components clamp the vehicle body; Step 5) Two employees simultaneously operate the fender adjustment component, inserting the gap limiting block of the fender adjustment component between the door and the fender, and adjusting the corresponding matching gap; Step 6) Two employees simultaneously tighten the nuts with a nut gun, completing the fender installation; Step 7) Two employees check the gap with a plug gauge, and after confirming it is correct, transport it to the next workstation.

[0018] Compared with the prior art, the present invention has the following advantages: the mounting fixture and installation method for the car engine hood hinge and fender of the present invention can achieve stable positioning, improve the installation accuracy of the hinge and fender, improve the assembly production efficiency, and has strong practicality and good application prospects. Attached Figure Description

[0019] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0020] Figure 1 This is a schematic diagram of the structure of the automobile engine hood hinge and fender mounting fixture of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the automobile engine hood hinge and fender mounting fixture of the present invention;

[0022] Figure 3 This is a partially enlarged structural diagram of the hinge positioning component in this invention;

[0023] Figure 4 This is a partially enlarged structural diagram of the first positioning component of the fender and the first clamping component of the vehicle body in this invention;

[0024] Figure 5 This is a schematic diagram of the second positioning component of the fender in this invention;

[0025] Figure 6 This is a schematic diagram of the structure of the second clamping assembly for the vehicle body in this invention;

[0026] Figure 7 This is a schematic diagram of the fender adjustment assembly structure in this invention.

[0027] The components in the diagram are labeled as follows: 100, Fixture frame; 1, First positioning mechanism; 2, Second positioning mechanism; 3, Side limit reference block of the vehicle body; 4, Hinge positioning assembly; 5, First positioning assembly of the fender; 6, Second positioning assembly of the fender; 7, First clamping assembly of the vehicle body; 8, Second clamping assembly of the vehicle body; 9, Y-direction limit block; 10, Fender adjustment assembly.

[0028] 4. Hinge positioning assembly; 41. First hinge positioning pin; 42. Second hinge positioning pin; 43. Upper clamping block of the pliers; 44. Lower clamping block of the pliers; 45. Side limiting reference block of the hinge;

[0029] 5. First positioning assembly for fender; 51. First positioning pin for fender; 52. First limiting block for fender;

[0030] 6. Second fender positioning assembly; 61. Second fender positioning pin; 62. Connecting plate;

[0031] 7. First clamping assembly for the vehicle body; 71. First upper clamping block for the vehicle body; 72. First lower clamping block for the vehicle body;

[0032] 8. Second clamping assembly for the vehicle body; 81. Second upper clamping block for the vehicle body; 82. Second lower clamping block for the vehicle body;

[0033] 10. Fender adjustment assembly; 101. Support rod; 102. Handle; 103. Upper limit stop block; 104. Gap limit stop block; 105. Fixing block. Detailed Implementation

[0034] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0035] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0036] This invention relates to an automotive engine hood hinge and fender mounting fixture, such as... Figure 1 , 2 As shown, the device includes a mounting frame 100 and a vehicle body positioning mechanism mounted thereon. The mounting frame 100 has hinge positioning assemblies for positioning hinges and fender positioning assemblies for positioning fenders on both sides. It also includes a vehicle body clamping assembly for clamping and positioning the vehicle body. This invention provides a vehicle engine hood hinge mounting fixture that achieves stable positioning, improves the installation accuracy of the hinges and fenders, and increases assembly production efficiency.

[0037] In this invention, the vehicle body positioning mechanism includes a first positioning mechanism 1 disposed on the rear end side beam of the mounting frame 100, and a second positioning mechanism 2 disposed on the front end side beam of the mounting frame 100. The first positioning mechanism 1 has two mechanisms spaced apart along the width of the vehicle body. Together with the second positioning mechanism 2 at the front, they form a triangular positioning structure on the entire surface, resulting in better stability. Both the first positioning mechanism 1 and the second positioning mechanism 2 are positioning pin structures that insert into the pin holes of the vehicle body radiator crossbeam, used for initial mounting and positioning of the mounting frame onto the vehicle body, facilitating subsequent positioning of hinges and fenders.

[0038] In this invention, such as Figure 3 As shown, the hinge positioning assembly is symmetrically arranged at the rear corner of the fixture frame 100 to position the hinge, facilitating precise installation. It includes hinge positioning pins corresponding to holes on the hinge, and a clamping device for gripping the hinge. The hinge positioning pins include a first hinge positioning pin 41 and a second hinge positioning pin 42 arranged front to back. The fixture frame 100 also has a hinge side limiting reference block 45 on its side, which restricts the hinge position relative to the side of the vehicle body. The clamping device includes an upper clamping block 43 and a lower clamping block 44. During installation, the hinge is positioned and installed by inserting the first positioning pin 41 and the second hinge positioning pin 42 into the mounting holes on the hinge that connect to the door cover. The side is limited by the hinge side limiting reference block 45 relative to the vehicle body. After positioning, the hinge is positioned using the clamping device, facilitating the installation of bolts and nuts to secure the hinge. The upper clamping block 43 of the hand clamp is opposite to the upper end face of the hinge. When the wrench is turned, the lower clamping block 44 of the hand clamp moves upward to clamp and position the hinge.

[0039] In this invention, such as Figure 4 As shown, the fender positioning assembly includes a first fender positioning assembly 5 arranged on the two side beams of the fixture frame 100 and a second fender positioning assembly 6 located at the front corner of the fixture frame 100. The first fender positioning assembly 5 includes a first fender positioning pin 51 inserted from top to bottom into a hole on the fender, and also includes first fender limiting blocks 52 arranged on both sides opposite to the fender to limit the fender's Y-direction installation position; as shown... Figure 5 As shown, the second fender positioning assembly 6 includes second fender positioning pins 61 that are positioned to both sides into holes in the fender. The second fender positioning pins 61 extend from the inside to both sides and are connected to the connecting plate 62. The positioning pins can be configured to be driven by a manual valve, allowing them to be inserted into and removed from the positioning holes for convenient operation and positioning.

[0040] In this invention, symmetrically arranged Y-direction limiting blocks are provided on both sides of the device frame to limit the Y-direction position of the device, control the left and right deviations, and ensure installation accuracy.

[0041] In this invention, the vehicle body clamping assembly includes a first vehicle body clamping assembly 7 arranged in front of the device frame and a second vehicle body clamping assembly 8 arranged behind the vehicle body frame; as shown Figure 4 As shown, the vehicle body first clamping assembly 7 includes a vehicle body first upper clamping block 71 fixed on the device frame 1, and a vehicle body first lower clamping block 72 driven by a cylinder to clamp and position the vehicle body corresponding to the vehicle body first upper clamping block 71. Figure 6 As shown, the second body clamping assembly 8 includes a second upper body clamping block 81 fixed on the device frame 100, and a second lower body clamping block 82 driven by a cylinder to clamp and position the body. After positioning the hinge and fender, the body is further fixed. The relative position of the body with the hinge and fender is fixed by the cover mounting fixture, which facilitates the sequential fixing and installation of the hinge and fender, ensures the accuracy of the device, and improves assembly efficiency.

[0042] In this invention, the device frame 100 is further provided with fender adjustment assemblies 10 on both sides for controlling the gap between the fender and the door. The fender adjustment assemblies 10 are as follows: Figure 7 As shown, the system includes a support rod 101, which is arranged along its height. A handle 102 for easy gripping and operation is provided on the support rod 101. An upper limit stop block 103 is located at the upper end of the support rod 101, which is engaged with the door frame. A gap-limiting insert 104 is provided on the side of the support rod 101 opposite to the door, which is inserted into the gap between the door and the fender to control and adjust the fitting gap between them. The end face of the gap-limiting insert 104 is a wedge-shaped surface with a narrow front end and a wide rear end. Fixing blocks 105 are arranged on both sides of the support rod 101. The fixing blocks 105 can be attached to sheet metal parts, fixing the fender to the vehicle body, facilitating adjustment and control of the fitting gap, and ensuring the installation and matching accuracy of the fender.

[0043] This invention relates to a method for installing an automotive engine hood hinge and fender, using the aforementioned installation fixture, and includes the following steps: Step 1) Two employees simultaneously insert the first positioning mechanism 1 and the second positioning mechanism 2 into the pin holes of the vehicle body radiator crossbeam, with the side edge limited by the vehicle body side limiting reference block 3 to control the Y-plane of the vehicle body; Step 2) Two employees simultaneously operate the first positioning pin 41 and the second positioning pin 42 of the hinge to position the hood hinge, and clamp the hinge with hand clamps; Step 3) Two employees simultaneously use a nut gun to position and install the hood hinge, completing the hood hinge installation; 4) Two employees operate simultaneously to install the fender onto the vehicle body; the first fender positioning component 5 and the second fender positioning component 6 position the fender, and the cylinders of the first vehicle body clamping component 7 and the second vehicle body clamping component 8 are vented to clamp the vehicle body; Step 5) Two employees operate the fender adjustment component 10 simultaneously, inserting the gap limiting plug 104 of the fender adjustment component 10 into the middle between the door and the fender, and the employees adjust the corresponding matching gap; Step 6) Two employees tighten the nuts simultaneously with a nut gun, and the fender installation is completed; Step 7) Two employees check the gap with a plug gauge, and after confirming that there are no errors, the fender is transported to the next workstation.

[0044] This invention relates to an automotive engine hood hinge and fender mounting fixture and installation method. The rational application of the fixture is beneficial to the consistency of early vehicle body matching and mass production assembly, improves the overall vehicle body appearance quality, increases production efficiency, reduces the labor intensity of employees, can achieve stable positioning, improves hinge installation accuracy and assembly production efficiency, and has strong practicality and good application prospects.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The present invention has been described above by way of example with reference to the accompanying drawings. However, the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention or any direct application to other situations shall fall within the protection scope of the present invention.

Claims

1. A mounting fixture for an automobile engine hood hinge and fender, characterized in that: The device includes a mounting frame and a vehicle body positioning mechanism mounted thereon. The mounting frame has hinge positioning assemblies for positioning hinges and fender positioning assemblies for positioning fenders on both sides, and also includes a vehicle body clamping assembly for clamping and positioning the vehicle body. The vehicle body positioning mechanism includes a first positioning mechanism on the rear side beam of the mounting frame and a second positioning mechanism on the front side beam of the mounting frame. The hinge positioning assemblies are symmetrically arranged at the rear corner of the mounting frame, including hinge positioning pins corresponding to holes on the hinges, and hand clamps for clamping the hinges vertically and vertically. The hinge positioning pins include a first hinge positioning pin and a second hinge positioning pin arranged front to back. The mounting frame also has hinge side limiting reference blocks on its side that limit the hinge position relative to the side of the vehicle body. The hand clamps include an upper hand clamping block and a lower hand clamping block. The vehicle body clamping assembly includes a first clamping assembly located at the front of the device frame and a second clamping assembly located at the rear of the vehicle body frame. The device frame also has fender adjustment assemblies on both sides for controlling the gap between the fender and the door. Each fender adjustment assembly includes a support rod arranged vertically, with a handle for easy gripping. An upper limit stop block is located at the upper end of the support rod, engaging with the door frame. A gap-limiting insert is located on the side of the support rod opposite the door, which is inserted into the gap between the door and the fender to control and adjust the fit gap. The end face of the gap-limiting insert is a wedge-shaped surface with a narrow front end and a wide rear end. Fixing blocks are arranged on both sides of the support rod, which can be adsorbed onto sheet metal parts and fixed to the vehicle body.

2. The automotive engine hood hinge and fender mounting fixture according to claim 1, characterized in that: The first positioning mechanism has two parts arranged at intervals along the width of the vehicle body.

3. The automotive engine hood hinge and fender mounting fixture according to claim 1, characterized in that: Both the first positioning mechanism and the second positioning mechanism are positioning pins that are inserted into the pin holes of the vehicle body water tank crossbeam.

4. The automotive engine hood hinge and fender mounting fixture according to claim 1, characterized in that: The fender positioning assembly includes a first fender positioning assembly arranged on the two side beams of the fixture frame and a second fender positioning assembly located at the front corner of the fixture frame.

5. The automotive engine hood hinge and fender mounting fixture according to claim 4, characterized in that: The first fender positioning assembly includes a first fender positioning pin that is inserted into a hole on the fender, and a first fender limiting block that is arranged on both sides opposite to the fender; the second fender positioning assembly includes a second fender positioning pin that is positioned on both sides into a hole on the fender.

6. A method for installing an automobile engine hood hinge and fender, using the mounting fixture as described in any one of claims 1 to 5, characterized in that, The process includes the following steps: Step 1) Two employees simultaneously insert the first and second positioning mechanisms into the pin holes of the vehicle body's radiator crossbeam; Step 2) Two employees simultaneously operate the first and second hinge positioning pins to position the hood hinge and clamp the hinge with hand clamps; Step 3) Two employees simultaneously use a nut gun to position and install the hood hinge, completing the hood hinge installation; Step 4) Two employees simultaneously install the fender onto the vehicle body; the first and second fender positioning components position the fender, and the cylinders of the first and second body clamping components are vented to clamp the vehicle body; Step 5) Two employees simultaneously operate the fender adjustment component, inserting the gap limiting block of the fender adjustment component between the door and the fender, and adjusting the corresponding matching gap; Step 6) Two employees simultaneously tighten the nuts with a nut gun, completing the fender installation; Step 7) Two employees check the gap with a plug gauge, and after confirming it is correct, transport it to the next workstation.

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