Split type headlamp and front protective cover size control method and structure

Abstract

The invention belongs to the technical field of automobile manufacturing size engineering, and particularly relates to a size control method and structure for a split type headlamp and a front protective cover. Wherein the front-end frame is fixed on a vehicle body, the front protective cover is fixed on the front-end frame, split headlamps are respectively arranged on two sides of the front protective cover, a front-end frame positioning mechanism is arranged at the front end of the frame, and a first split headlamp positioning mechanism and a second split headlamp positioning mechanism are respectively arranged at the lower end part and the outer side of the front end of the frame; according to the installation tool, the split type headlamp is firstly installed through the installation tool, breaking of an automobile body size chain ring is achieved, and therefore the space position size of the split type headlamp is guaranteed; then a front protective cover is installed, the spatial position size of the front protective cover is guaranteed by means of the same positioning points of the harness and the front protective cover, and therefore full-size control over the headlamp and the front protective cover is guaranteed; the problems caused by poor matching of the peripheral sizes of the split type headlamp and the front protective cover are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing dimension engineering, and in particular relates to a method and structure for controlling the dimensions of a split headlamp and a front bumper mask. Background Art

[0002] As split headlamps become a popular trend, more and more car companies are beginning to adopt this design to enhance the appeal of their products. In addition, the size, shape and function of split headlamps have changed greatly, making it impossible to adopt the traditional fixing method integrated with the bumper mask. During assembly in the production workshop, it is necessary to assemble the split headlamps and bumper mask separately on the body. Limited by the cumulative manufacturing errors of the body, as well as the errors of the bumper mask and split headlamps, there will be problems with the overall gap and poor matching between the headlamps and the front bumper mask, affecting the perceived quality of consumers. In more serious cases, it will cause interference between parts during the assembly process, resulting in assembly failures and quality problems such as line stoppages.

[0003] How to ensure the size matching between the split headlight and the front bumper has become a research topic for major automobile manufacturers. The solution in the prior art is to install the front daytime running light unit and the front headlight unit on the body sheet metal separately, and then clip them to the front bumper unit separately, so as to achieve the effect of full size matching with the bumper. The basis of this solution is that the body size deviation is extremely small, but once the size deviation is large, not only can the matching relationship not be guaranteed, but also the problem of difficulty in assembling the clip points and the inability to clip will occur, which does not fundamentally solve the problem of cumulative manufacturing deviation of size in the actual production process.

[0004] The current mainstream solution to eliminate the problem of cumulative manufacturing errors in vehicle body dimensions is to use online punching to interrupt the dimensions, thereby ensuring the full dimensional matching relationship between the front bumper and the headlights. However, this solution has high investment costs and requires the addition of online punching stations and punching devices. In addition, this solution requires redefining the product structure in combination with the punching process, and is only suitable for new vehicle model development projects. Model year vehicles and modified vehicles are limited by the fixed body structure and cannot implement online punching solutions; therefore, the mainstream online punching solution not only has high investment costs, but also has certain limitations. Summary of the invention

[0005] In order to overcome the above problems, the present invention provides a method and structure for controlling the size of a split headlamp and a front guard mask; by first installing the split headlamp with a fixture, the chain link of the vehicle body size is interrupted, thereby ensuring the spatial position size of the split headlamp; then installing the front guard mask, relying on the same positioning points of the fixture and the front guard mask, the spatial position size of the front guard mask is ensured, thereby ensuring comprehensive size control of the headlamp and the front guard mask; solving the problem caused by poor matching of the circumferential size of the split headlamp and the front guard mask.

[0006] A split headlamp and front bumper mask size control structure comprises a vehicle body 1, a split headlamp 2, a fitting 3, a front end frame 4, and a front bumper mask 5; wherein the front end frame 4 is fixed to a front anti-collision beam of the vehicle body 1, the front bumper mask 5 is fixed to the front end frame 4, the split headlamp 2 is respectively installed in the openings on both sides of the front bumper mask 5, and the split headlamp 2 is fixed to the vehicle body 1;

[0007] The harness 3 includes a frame 31, a front-end frame positioning mechanism and a split headlight positioning mechanism; wherein the front end of the frame 31 is provided with a front-end frame positioning mechanism, and the lower end and the outer side of the front end are respectively provided with a first split headlight positioning mechanism and a second split headlight positioning mechanism.

[0008] The frame 31 is a rectangular frame, and the front-end frame positioning mechanism includes a positioning round pin 311, a positioning prism pin 312, a first positioning plate 313, a first clamping device 314 and a second clamping device 318 for clamping the front-end frame 4, wherein connecting frames 322 are fixed on both sides of the upper cross bar of the rectangular frame, the first clamping device 314 is fixed on the upper part of the connecting frame 322 through the second positioning plate 3141, the positioning prism pin 312 is fixed to the front end of the lower part of the connecting frame 322 on one side, and the positioning round pin 311 is fixed to the front end of the lower part of the connecting frame 322 on the other side; second clamping devices 318 are respectively provided on both sides of the lower cross bar of the frame 31, and the first positioning plates 313 are respectively fixed on the cross bars of the frame 31 inside the second clamping devices 318; a first split headlight positioning mechanism is fixed to the end of the cross bar of the frame 31 located outside the second clamping device 318, and a second split headlight positioning mechanism is provided on the outer side of the vertical bar of the frame 31.

[0009] The first clamping device 314 includes a second positioning plate 3141, a first cylinder 3142, a first clamping rod 3143, and a first cylinder connecting plate 3144, wherein the second positioning plate 3141 is fixed above the connecting frame 322, the first cylinder 3142 is fixed on the first cylinder connecting plate 3144, the second positioning plate 3141 and the first cylinder connecting plate 3144 are connected together by a pin shaft, the first clamping rod 3143 is connected to the second positioning plate 3141 by a pin shaft, and the first clamping rod 3143 is aligned with the telescopic end of the first cylinder 3142 at the top and aligned with the second positioning plate 3141 at the bottom.

[0010] The second positioning plate 3141 includes a horizontal plate and a vertical plate fixed together, wherein the top of the vertical plate extends toward the front end to form an extension plate, the horizontal plate is fixed on the connecting frame 322, the rear end of the extension plate and the first cylinder connecting plate 3144 are connected together by a pin shaft, and the first clamping rod 3143 is connected to the front end of the extension plate by a pin shaft.

[0011] The second clamping device 318 includes a second cylinder 3182, a second clamping rod 3183, and a second cylinder connecting plate 3184, wherein the second cylinder 3182 is fixed on the second cylinder connecting plate 3184, and the first connecting plates 323 are fixed on both sides of the cross bar below the frame 31, and the bottom of the first connecting plate 323 extends forward to form a connecting short plate 3181, and the rear end of the connecting short plate 3181 and the second cylinder connecting plate 3184 are connected together by a pin shaft, and the second clamping rod 3183 is connected to the front end of the connecting short plate 3181 by a pin shaft, and the lower part of the second clamping rod 3183 is aligned with the telescopic end of the second cylinder 3182, and the upper part is aligned with the first connecting plate 323.

[0012] The first split headlamp positioning mechanism includes a first guide block 315, a first positioning block 316, a first special-shaped guide positioning block 317 and a third clamping device 319 for clamping the split headlamp 2, wherein the first positioning block 316 is fixed to the end of the cross bar below the frame 31 through a mounting plate, a first special-shaped guide positioning block 317 is provided on the cross bar below the frame 31 on the inner side of the first positioning block 316, the first guide block 315 is connected to the mounting plate below the first positioning block 316 through an extension plate, and a third clamping device 319 is provided on the mounting plate between the first guide block 315 and the first special-shaped guide positioning 317.

[0013] The third clamping device 319 for clamping the split headlamp 2 includes a third cylinder 3192, a third clamping rod 3193, and a third cylinder connecting plate 3194, wherein the third cylinder 3192 is fixed on the third cylinder connecting plate 3194, a second connecting plate 3191 is provided on the mounting plate between the first guide block 315 and the first positioning block 317, a first connecting block 324 is provided at the front end of the second connecting plate 3191, the middle part of the first connecting block 324 and the third cylinder connecting plate 3194 are connected together by a pin shaft, the third clamping rod 3193 is connected to the front end of the first connecting block 324 by a pin shaft, and the left side of the third clamping rod 3193 is aligned with the second connecting plate 3191, and the right side is aligned with the telescopic end of the third cylinder 3192.

[0014] The second split headlamp positioning mechanism comprises a bracket, an upper positioning mechanism and a lower positioning mechanism, wherein the bracket is fixed to the outside of the vertical rod of the frame 31, and the upper positioning mechanism and the lower positioning mechanism are respectively arranged at the upper and lower ends of the front of the bracket;

[0015] The upper positioning mechanism includes a second special-shaped guide positioning block 3217, a fourth clamping device 320 for clamping the split headlamp 2, and a third positioning plate 3201, wherein the third positioning plate 3201 is fixed above the bracket, the fourth clamping device 320 is provided above the third positioning plate 3201, and the second special-shaped guide positioning block 3217 is provided below;

[0016] The lower positioning mechanism includes a third special-shaped guide positioning block 3161, a fifth clamping device 321 for clamping the split headlamp 2, a fourth positioning plate 3211 and a second connecting block 3215, wherein the fourth positioning plate 3211 is fixed under the bracket and the second connecting block 3215 is fixed thereon, the third special-shaped guide positioning block 3161 is fixed at the front end of the second connecting block 3215, and the fifth clamping device 321 is connected to the second connecting block 3215 via a connecting rod 3216.

[0017] The fourth clamping device 320 includes a fourth cylinder 3202, a fourth clamping rod 3203 and a fourth cylinder connecting plate 3204, wherein the fourth cylinder 3202 is fixed on the fourth cylinder connecting plate 3204, the middle part of the cross bar above the third positioning plate 3201 and the fourth cylinder connecting plate 3204 are connected together by a pin shaft, the fourth clamping rod 3203 is connected to the front end of the cross bar above the third positioning plate 3201 by a pin shaft, and the fourth clamping rod 3203 is aligned with the telescopic end of the fourth cylinder 3202 at the top and the second guide block 3217 at the bottom.

[0018] The fifth clamping device 321 includes a fifth cylinder 3212, a fifth clamping rod 3213 and a fifth cylinder connecting plate 3214, wherein the fifth cylinder 3212 is fixed on the fifth cylinder connecting plate 3214, the top of the connecting rod 3216 is fixed to the outer side of the second connecting block 3215, the fifth cylinder connecting plate 3214 and the middle of the connecting rod 3216 are connected together by a pin, the fifth clamping rod 3213 is connected to the bottom of the connecting rod 3216 by a pin, and the top of the fifth clamping rod 3213 is aligned with the front end face of the connecting rod 3216, and the bottom is aligned with the telescopic end of the fifth cylinder 3212.

[0019] The two sides of the front frame 4 are provided with a mounting surface 42 with a nut, a positioning square hole 41, and a mounting nut surface 44 in sequence from top to bottom, and the bottom of the front frame 4 is provided with a second mounting nut surface 45;

[0020] The front protective mask 5 has a first fixing surface 52, a positioning pin 51 and a second fixing surface 53 on both sides of the interior thereof from top to bottom, and the opening inner circles on both sides of the front protective mask 5 are provided with flanges 54, and a fixing surface 55 is provided under the front protective mask 5, wherein the positioning pin 51 of the front protective mask 5 is positioned in the front end frame 4 through the positioning square hole 41, and the first fixing surface 52 and the second fixing surface 53 are respectively fastened to the mounting surface 42 and the mounting nut surface 44 on the front end frame 4, and the fixing surface 55 is fastened to the second mounting nut surface 45 on the front end frame 4.

[0021] The vehicle body 1 is provided with a headlamp lower bracket 11, a headlamp upper bracket 12 and a headlamp side bracket 13; the outer ring of the split headlamp 2 is provided with an X-direction mounting hole 21 and a Y-direction fixing surface 22, an anti-falling guide holder 23 is provided below the split headlamp 2, and a plurality of assembly guides 24 are provided on the outer ring of the lampshade of the split headlamp 2, and the anti-falling guide holder 23 and the assembly guides 24 are both clamped on the flange 54; the split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 respectively through the X-direction mounting hole 21, and the split headlamp 2 is fastened to the headlamp side bracket 13 through the Y-direction fixing surface 22.

[0022] An adjustable nut 6 is installed in the X-direction mounting hole 21 .

[0023] The split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 respectively through the adjustable nuts 6 in the X-direction mounting holes 21 .

[0024] The adjustable nut 6 consists of an inner nut 61 and an outer nut 62 , wherein the inner nut 61 and the outer nut 62 are fitted together through their own internal threads, and an exposed thread is provided on the upper portion of the inner nut 61 for threaded connection into the X-direction mounting hole 21 on the split headlamp 2 .

[0025] The side surfaces of the connecting frame 322 inside the positioning round pin 311 and the positioning prismatic pin 312 are respectively provided with positioning plates for cooperating with the mounting surface 42 and the mounting plane 43 on the front end frame 4 .

[0026] A method for controlling the size of a split headlamp and a front bumper mask includes the following contents:

[0027] Step 1: first install the split headlamp 2 on the fixture 3 to position the split headlamp 2, specifically:

[0028] The first guide block 315 is used to match the bottom and side surfaces of the anti-leakage guide 23 of the split headlamp 2 to locate the initial installation position of one side of the lower part of the split headlamp 2; the third special-shaped guide positioning block 3161 is used to match the contour surface of the other side of the lower part of the split headlamp 2; the outer plane of the first special-shaped guide positioning block 317 is used to match the right contour of the split headlamp 2; and the second special-shaped guide positioning block 3217 is used to match the upper contour of the split headlamp 2; the initial spatial placement of the split headlamp 2 is realized;

[0029] Step 2: Hold the split headlamp 2 and move it in the positioning space of the fixture 3 to ensure that the assembly guide 24 at the bottom of the split headlamp 2 fits with the first positioning block 316 and the third special-shaped guide positioning block 3161 on the fixture 3 in the Z direction, and that the right contour surface of the split headlamp 2 fits with the left side of the first special-shaped guide positioning block 317 in the Y direction; ensure that the front shell of the split headlamp 2 fits with the first positioning block 316, the second special-shaped guide positioning block 3217, and the third special-shaped guide positioning block 3161 in the X direction; and achieve accurate position alignment of the split headlamp 2 on the fixture 3;

[0030] Step 3: The third cylinder 3192, the fourth cylinder 3202, and the fifth cylinder 3212 start working at the same time, so that the telescopic end of the third cylinder 3192 drives the third clamping rod 3193 to clamp the back shell of the split headlamp 2, the telescopic end of the fourth cylinder 3202 drives the fourth clamping rod 3203 to clamp the back shell of the split headlamp 2, and the telescopic end of the fifth cylinder 3212 drives the fifth clamping rod 3213 to clamp the back shell of the split headlamp 2;

[0031] Step 4: After the front frame 4 and the vehicle body 1 are assembled by fastening bolts using their own mounting points, the fixture 3 with the split headlamp 2 is moved and the front frame 4 is fixed on the fixture 3. Specifically, the positioning round pin 311 is connected to the square hole 41 on one side of the front frame 4, and the positioning prismatic pin 312 is connected to the square hole 41 on the other side of the front frame 4.

[0032] Continue to push the harness 3 forward, and stop when the second positioning plate 3141 and the first positioning plate 313 on the harness 3 contact the corresponding mounting surface 42 and the mounting plane 43 on the front frame 4, respectively. At this time, the first clamping device 314 and the second clamping device 318 start to work; specifically:

[0033] The telescopic end of the first cylinder 3142 on the first clamping device 314 drives the first clamping rod 3143 to clamp the back of the front frame 4, and the telescopic end of the second cylinder 3182 on the second clamping device 318 drives the second clamping rod 3183 to clamp the back of the front frame 4, thereby realizing a stable connection between the positioning front frame 4 and the fixture 3;

[0034] Step 5, fix the split headlamp 2 and the vehicle body 1; specifically, the split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 through the X-direction mounting hole 21, and the split headlamp 2 is fastened to the headlamp side bracket 13 through the Y-direction fixing surface 22;

[0035] Step 6: Control the telescopic ends of the third cylinder 3192, the fourth cylinder 3202 and the fifth cylinder 3212 to be retracted, thereby realizing the separation of the split headlamp 2 from the fixture 3; then control the telescopic ends of the first cylinder 3142 and the second cylinder 3182 to be retracted, thereby realizing the separation of the front end frame 4 from the fixture 3;

[0036] Step seven, remove the fixture 3, and then complete the installation of the front protection mask 5 and the front end frame 4, specifically: first align the locating pin 51 on the front protection mask 5 with the locating square hole 41 on the front end frame 4, and then push it gently by hand to ensure that the locating pin 51 on the front protection mask 5 enters the square hole of the front end frame 4; the flange 54 of the front protection mask 5 cooperates with the anti-falling guide 23 and the assembly guide 24 on the split headlamp 2, and the mounting surface 42, the mounting nut surface 44, and the second mounting nut surface 45 of the front end frame 4 are respectively fixed to the first fixing surface 52, the second fixing surface 53, and the fixing surface 55 of the front protection mask 5 by bolts; thereby achieving dimensional control of the split headlamp 2 and the front protection mask 5.

[0037] Beneficial effects of the present invention:

[0038] 1. The equipment and the front protection mask are fixed on the front frame, and the positioning points are consistent, which can effectively ensure the size of the space after the front protection mask is installed.

[0039] 2. The fixture is integrated with fixing components and positioning components, forming an integrated frame structure, so that the spatial position of the positioning components of the split headlight is consistent with the front guard shield.

[0040] 3. The positioning components on the fixture are controlled by the clearance surface, which can realize the zero error of the key evaluation dimension and further reduce the dimensional error; and a guide is provided to ensure the smooth positioning of the split headlight on the fixture.

[0041] 4. The positioning component adopts a more sophisticated structure. According to the needs, the positioning and guidance in up to three directions can be concentrated on one unit block at the same time, which can more effectively reduce the weight of the equipment itself and optimize the space layout.

[0042] 5. The fixture is equipped with a fixed electric wrench, which can realize the operation and assembly in the blind area and reduce the difficulty of operation.

[0043] 6. The split headlights are equipped with adjustable nuts to further compensate for the dimensional deviation of the vehicle body in the X direction. While ensuring the surface difference size in the X direction, it can also avoid assembly deformation caused by poor X-direction matching.

[0044] 7. The split headlight is equipped with an anti-drop holder to further ensure stability after assembly.

[0045] 8. The split headlight is equipped with an assembly guide to ensure the smoothness of the front guard shield.

[0046] In summary, the present invention can not only ensure the comprehensive matching dimensions of the split headlights and the front guard shield, while achieving the convenience of operation and assembly, but also reduce the dimensional accuracy requirements for the vehicle body, avoiding quality problems such as assembly difficulties and poor part dimensions during assembly.

[0047] The present invention can also reduce the investment in tooling equipment for current mainstream online punching, especially for new model cars and modified cars, which can effectively reduce the design changes of the car body, reduce investment costs, shorten the development cycle, and achieve refined control of size. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without creative work.

[0049] Figure 1 It is a schematic diagram of the overall structure decomposition of the present invention.

[0050] Figure 2 It is a schematic diagram of the vehicle body structure of the present invention.

[0051] Figure 3 It is a schematic diagram of the structure of the split headlamp of the present invention.

[0052] Figure 4 It is a schematic diagram of the front-end framework structure of the present invention.

[0053] Figure 5 It is a schematic diagram of the structure of the front protection mask of the present invention.

[0054] Figure 6 It is a schematic diagram of the structure of the equipment of the present invention.

[0055] Figure 7 It is a schematic diagram of the structure of the equipment part of the present invention.

[0056] Figure 8 It is a schematic structural diagram of the first clamping device of the mounting of the present invention.

[0057] Fig. 9 for Figure 8 Schematic diagram of part of the structure.

[0058] Fig.10 It is a schematic structural diagram of the second clamping device of the present invention.

[0059] Fig.11 It is a detailed schematic diagram of one side of the harness of the present invention.

[0060] Fig.12 It is a schematic structural diagram of the third clamping device of the present invention.

[0061] Fig.13 It is a schematic structural diagram of the fourth clamping device of the present invention.

[0062] Fig.14 It is a schematic structural diagram of the fifth clamping device of the present invention.

[0063] Fig.15 It is a schematic diagram of the structure of the adjustable nut of the present invention.

[0064] Fig.16 The figure is a schematic diagram of the split headlamp installed in the mounting of the present invention.

[0065] Fig.17 It is a schematic diagram of installing the front protection mask of the present invention.

[0066] Fig.18 It is a schematic diagram of the present invention having been installed.

[0067] Wherein: body 1, headlamp lower bracket 11, headlamp upper bracket 12, headlamp side bracket 13, split headlamp 2, X-direction mounting hole 21, Y-direction fixing surface 22, anti-drop guide holder 23, assembly guide 24, fixture 3, frame 31, positioning round pin 311, positioning prism pin 312, first positioning plate 313, first clamping device 314, second positioning plate 3141, first cylinder 3142, first clamping rod 3143, first cylinder connecting plate 3144, first guide block 315, first positioning block 316, third special-shaped guide positioning block 3161, first special-shaped guide positioning block 317, second clamping device 318, connecting short plate 3181, second cylinder 3182, second clamping rod 3183, second cylinder connecting plate 3184, third clamping device 319, second connecting plate 3191, third cylinder 3192, the third clamping rod 3193, the third cylinder connecting plate 3194, the fourth clamping device 320, the third positioning plate 3201, the fourth cylinder 3202, the fourth clamping rod 3203, the fourth cylinder connecting plate 3204, the fifth clamping device 321, the fourth positioning plate 3211, the fifth cylinder 3212, the fifth clamping rod 3213, the fifth cylinder connecting plate 3214, the second connecting block 3215, the connecting rod 3216, the second special-shaped guide positioning block 3217, the connecting frame 322, the electric wrench 32, the valve island 33, the moving structure 34, the front end frame 4, the positioning square hole 41, the mounting surface 42, the mounting plane 43, the mounting nut surface 44, the front protection mask 5, the positioning pin 51, the first fixing surface 52, the second fixing surface 53, the flange 54, the fixing surface 55, the adjustable nut 6, the inner nut 61, and the outer nut 62. DETAILED DESCRIPTION

[0068] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0069] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0072] Example 1

[0073] Depend on Figure 1-Figure 15 It can be seen that a split headlamp and front bumper mask size control structure includes a vehicle body 1, a split headlamp 2, a fixture 3, a front frame 4, a front bumper mask 5, and an adjustable nut 6; wherein the front frame 4 (two fixing points are respectively provided at the middle parts of both sides of the front frame 4, and are fixed together with the front bumper beam of the vehicle body 1 by bolts) is fixed to the front bumper beam of the vehicle body 1, the front bumper mask 5 is fixed to the front frame 4, and the split headlamps 2 are respectively installed in the openings on both sides of the front bumper mask 5, and the split headlamps 2 are fixed to the vehicle body 1;

[0074] The fixture 3 includes a frame 31, (the fixture 3 also includes an electric wrench 32, wherein the electric wrench 32 is fixed to the outer sides of both ends of the frame 31 through an extended bracket. Since the split headlamp 2 is provided with a fixing point for fastening to the vehicle body 1 at the lower part, the operating space of this part is small, and the electric wrench 32 can realize blind area assembly operation and improve work efficiency), a valve island 33, a mobile structure 34 (the mobile structure 34 is arranged on the top of the frame 31, which belongs to the prior art. The mobile structure 34 refers to the upper connecting structure arranged on the top of the frame 31, wherein there is a rotating shaft in the middle and a guide rail on the upper part, which is connected to the steel structure in the fixed factory building. Through the mobile structure 34, the movement and rotation of the fixture 3 in the spatial position are realized to meet the convenience of the production line), a front-end frame positioning mechanism and a split headlamp positioning mechanism; wherein the valve island 33 is fixed to the cross bar above the rear end of the frame 31 by fastening bolts respectively; the front end of the frame 31 is provided with a front-end frame positioning mechanism, and the lower end and the outer side of the front end are respectively provided with a first split headlamp positioning mechanism and a second split headlamp positioning mechanism.

[0075] The frame 31 is a rectangular frame, and the front frame positioning mechanism includes a positioning round pin 311, a positioning prism pin 312, a first positioning plate 313, a first clamping device 314 and a second clamping device 318 for clamping the front frame 4, wherein a connecting frame 322 is fixed on both sides of the cross bar above the rectangular frame, the first clamping device 314 is fixed above the connecting frame 322 through the second positioning plate 3141, the positioning prism pin 312 is fixed to the front end below the connecting frame 322 on one side through a connecting block and an adjusting gasket, and the positioning round pin 314 is fixed to the front end below the connecting frame 322 on one side through a connecting block and an adjusting gasket. 11 is fixed to the front end below the connecting frame 322 on the other side through a connecting block and an adjusting gasket; second clamping devices 318 are respectively provided on both sides of the lower cross bar of the frame 31, and first positioning plates 313 are respectively fixed on the cross bars of the frame 31 inside the second clamping devices 318 (the first positioning plates 313 are fixed to the lower cross bars of the frame 31 through a connecting plate); a first split headlamp positioning mechanism is fixed to the end of the cross bar of the frame 31 located outside the second clamping device 318, and a second split headlamp positioning mechanism is provided on the outer side of the vertical bar of the frame 31.

[0076] The first clamping device 314 includes a second positioning plate 3141, a first cylinder 3142, a first clamping rod 3143, and a first cylinder connecting plate 3144, wherein the second positioning plate 3141 is fixed above the connecting frame 322, the first cylinder 3142 is fixed on the first cylinder connecting plate 3144, the second positioning plate 3141 above and the first cylinder connecting plate 3144 below are connected together by a pin shaft, the first clamping rod 3143 is connected to the second positioning plate 3141 by a pin shaft, and the first clamping rod 3143 is aligned with the telescopic end of the first cylinder 3142 at the top and the second positioning plate 3141 at the bottom.

[0077] The second positioning plate 3141 includes a horizontal plate and a vertical plate fixed together, wherein the top of the vertical plate extends toward the front end to form an extension plate, the horizontal plate is fixed on the connecting frame 322, the rear end of the extension plate and the first cylinder connecting plate 3144 are connected together by a pin shaft, and the first clamping rod 3143 is connected to the front end of the extension plate by a pin shaft.

[0078] The second clamping device 318 includes a second cylinder 3182, a second clamping rod 3183, and a second cylinder connecting plate 3184, wherein the second cylinder 3182 is fixed on the second cylinder connecting plate 3184, and the first connecting plates 323 are fixed on both sides of the cross bar below the frame 31, and the bottom of the first connecting plate 323 extends forward to form a connecting short plate 3181, and the rear end of the connecting short plate 3181 and the second cylinder connecting plate 3184 are connected together by a pin shaft, and the second clamping rod 3183 is connected to the front end of the connecting short plate 3181 by a pin shaft, and the lower part of the second clamping rod 3183 is aligned with the telescopic end of the second cylinder 3182, and the upper part is aligned with the first connecting plate 323.

[0079] The first split headlamp positioning mechanism includes a first guide block 315, a first positioning block 316, a first special-shaped guide positioning block 317 and a third clamping device 319 for clamping the split headlamp 2, wherein the first positioning block 316 is fixed to the end of the cross bar below the frame 31 through a mounting plate and an adjusting gasket, a first special-shaped guide positioning block 317 is provided on the cross bar below the frame 31 on the inner side of the first positioning block 316, the first guide block 315 is connected to the mounting plate below the first positioning block 316 through an extension plate, and a third clamping device 319 is provided on the mounting plate between the first guide block 315 and the first special-shaped guide positioning 317.

[0080] The third clamping device 319 for clamping the split headlamp 2 includes a third cylinder 3192, a third clamping rod 3193, and a third cylinder connecting plate 3194, wherein the third cylinder 3192 is fixed on the third cylinder connecting plate 3194, a second connecting plate 3191 is provided on the mounting plate between the first guide block 315 and the first positioning block 317, a first connecting block 324 is provided at the front end of the second connecting plate 3191, the middle part of the first connecting block 324 and the third cylinder connecting plate 3194 are connected together by a pin shaft, the third clamping rod 3193 is connected to the front end of the first connecting block 324 by a pin shaft, and the left side of the third clamping rod 3193 is aligned with the second connecting plate 3191, and the right side is aligned with the telescopic end of the third cylinder 3192.

[0081] The second split headlamp positioning mechanism comprises a bracket, an upper positioning mechanism and a lower positioning mechanism, wherein the bracket is fixed to the outside of the vertical rod of the frame 31, and the upper positioning mechanism and the lower positioning mechanism are respectively arranged at the upper and lower ends of the front of the bracket;

[0082] The upper positioning mechanism includes a second special-shaped guide positioning block 3217, a fourth clamping device 320 for clamping the split headlamp 2, and a third positioning plate 3201, wherein the third positioning plate 3201 is fixed above the bracket, the fourth clamping device 320 is provided above the third positioning plate 3201, and the second special-shaped guide positioning block 3217 is provided below;

[0083] The lower positioning mechanism includes a third special-shaped guide positioning block 3161, a fifth clamping device 321 for clamping the split headlamp 2, a fourth positioning plate 3211 and a second connecting block 3215, wherein the fourth positioning plate 3211 is fixed under the bracket and the second connecting block 3215 is fixed thereon, the third special-shaped guide positioning block 3161 is fixed at the front end of the second connecting block 3215, and the fifth clamping device 321 is connected to the second connecting block 3215 via a connecting rod 3216.

[0084] The fourth clamping device 320 includes a fourth cylinder 3202, a fourth clamping rod 3203 and a fourth cylinder connecting plate 3204, wherein the fourth cylinder 3202 is fixed on the fourth cylinder connecting plate 3204, the third positioning plate 3201 (the third positioning plate 3201 includes a lower cross bar, a vertical rod and an upper cross bar, wherein the upper cross bar and the lower cross bar are respectively fixed at the upper and lower ends of the vertical rod in the front-to-back direction) the middle part of the upper cross bar and the fourth cylinder connecting plate 3204 are connected together by a pin shaft, the fourth clamping rod 3203 is connected to the front end of the upper cross bar of the third positioning plate 3201 by a pin shaft, and the upper part of the fourth clamping rod 3203 is aligned with the telescopic end of the fourth cylinder 3202, and the lower part is aligned with the second guide block 3217.

[0085] The fifth clamping device 321 includes a fifth cylinder 3212, a fifth clamping rod 3213 and a fifth cylinder connecting plate 3214, wherein the fifth cylinder 3212 is fixed on the fifth cylinder connecting plate 3214, the top of the connecting rod 3216 is fixed to the outer side of the second connecting block 3215, the fifth cylinder connecting plate 3214 and the middle of the connecting rod 3216 are connected together by a pin, the fifth clamping rod 3213 is connected to the bottom of the connecting rod 3216 by a pin, and the top of the fifth clamping rod 3213 is aligned with the front end face of the connecting rod 3216, and the bottom is aligned with the telescopic end of the fifth cylinder 3212.

[0086] The two sides of the front frame 4 are provided with a mounting surface 42 with a nut, a positioning square hole 41, a mounting nut surface 44 and a mounting plane 43 in sequence from top to bottom (the mounting plane 43 is used as a mounting point for positioning the auxiliary tool on the front frame 4, in order to highlight the characteristic points on the front frame 4 and the subsequent functions), and a second mounting nut surface 45 is provided at the bottom of the front frame 4;

[0087] The front protection mask 5 has a first fixing surface 52, a positioning pin 51 and a second fixing surface 53 on both sides of the interior thereof from top to bottom, and the opening inner circles on both sides of the front protection mask 5 are provided with flanges 54, and a fixing surface 55 is provided under the front protection mask 5, wherein the positioning pin 51 of the front protection mask 5 is positioned in the positioning square hole 41 of the front end frame 4, and the first fixing surface 52 and the second fixing surface 53 are respectively fastened to the mounting surface 42 and the mounting nut surface 44 on the front end frame 4 by bolts, and the fixing surface 55 is fastened to the second mounting nut surface 45 on the front end frame 4 by bolts.

[0088] The vehicle body 1 is provided with a headlamp lower bracket 11, a headlamp upper bracket 12 and a headlamp side bracket 13; the outer ring of the split headlamp 2 is provided with a plurality of X-direction mounting holes 21 and a Y-direction fixing surface 22, an anti-falling guide holder 23 is provided below the split headlamp 2, a plurality of assembly guides 24 are provided on the outer ring of the lampshade of the split headlamp 2, and the anti-falling guide holder 23 and the assembly guide 24 are both clamped on the flange 54; the assembly guide 24 plays the role of an assembly guide and cooperates with the flange 54, and the anti-falling guide 23 cooperates with the flange 54 of the front protection mask 5 to prevent the split headlamp 2 and the front protection mask 5 from falling off, thereby ensuring the convenience of assembly and the stability after assembly; the split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 through the X-direction mounting holes 21 respectively, and the split headlamp 2 is fastened to the headlamp side bracket 13 through the Y-direction fixing surface 22.

[0089] An adjustable nut 6 is installed in the X-direction mounting hole 21 .

[0090] The split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 respectively through the adjustable nuts 6 in the X-direction mounting holes 21 .

[0091] The adjustable nut 6 consists of an inner nut 61 and an outer nut 62 , wherein the inner nut 61 and the outer nut 62 are fitted together through their own internal threads, and an exposed thread is provided on the upper portion of the inner nut 61 for threaded connection into the X-direction mounting hole 21 on the split headlamp 2 .

[0092] The side surfaces of the connecting frame 322 inside the positioning round pin 311 and the positioning prismatic pin 312 are respectively provided with positioning plates for cooperating with the mounting surface 42 and the mounting plane 43 on the front end frame 4 .

[0093] The valve island 33 is in gas communication with the first cylinder 3142 , the second cylinder 3182 , the third cylinder 3192 , the fourth cylinder 3202 and the fifth cylinder 3212 , respectively.

[0094] A method for controlling the size of a split headlamp and a front bumper mask, such as Figure 16-18 As shown, including the following:

[0095] Step 1: Confirm that the fixture 3 is in a fully opened state, and first install the split headlamp 2 on the fixture 3 to position the split headlamp 2, specifically:

[0096] Visually observe the positions of the first guide block 315, the first special-shaped guide positioning block 317, the second special-shaped guide positioning block 3217, and the third special-shaped guide positioning block 3161, and use the first guide block 315 to cooperate with the bottom and side surfaces of the anti-leakage guide 23 of the split headlamp 2 to locate the initial installation position of one side of the lower part of the split headlamp 2; use the upper plane protruding from the lower part of the third special-shaped guide positioning block 3161 to cooperate with the contour surface on the other side of the lower part of the split headlamp 2 to align the lower position of the split headlamp 2; use the outer plane of the first special-shaped guide positioning block 317 to cooperate with the right side contour of the split headlamp 2 to align the left and right direction positions of the split headlamp 2; then use the upper part of the second special-shaped guide positioning block 3217 to cooperate with the upper contour of the split headlamp 2 to align the upper position of the split headlamp 2; and realize the initial spatial placement of the split headlamp 2;

[0097] Step 2: Continue to hold the split headlamp 2 with your hands, and move it slightly up, down, left, right, front, and back in the positioning space of the fixture 3. Move up and down to ensure that the two assembly guides 24 at the bottom of the split headlamp 2 fit with the Z-direction fixing surfaces of the first positioning block 316 and the third special-shaped guide positioning block 3161 on the fixture 3. Move left and right to ensure that the right contour surface of the split headlamp 2 fits with the left side of the first special-shaped guide positioning block 317 in the Y direction; move forward and backward to ensure that the front face shell of the split headlamp 2 fits with the X-direction surfaces of the first positioning block 316, the second special-shaped guide positioning block 3217, and the third special-shaped guide positioning block 3161. The above actions realize the precise position alignment of the split headlamp 2 on the fixture 3.

[0098] Step 3: drive the valve island on the fixture 3, the air circuit starts to operate, the third cylinder 3192, the fourth cylinder 3202, and the fifth cylinder 3212 start to work at the same time, so that the telescopic end of the third cylinder 3192 drives the third clamping rod 3193 to clamp the back shell of the split headlamp 2, the telescopic end of the fourth cylinder 3202 drives the fourth clamping rod 3203 to clamp the back shell of the split headlamp 2, and the telescopic end of the fifth cylinder 3212 drives the fifth clamping rod 3213 to clamp the back shell of the split headlamp 2;

[0099] As described above, the positioning point is on the front side of the housing of the split headlamp 2, and the clamping point for the cylinder activation is on the back side of the housing of the split headlamp 2, which interact with each other to achieve the spatial position fixation of the split headlamp 2 and the fixture 3;

[0100] Step 4: After the front frame 4 and the vehicle body 1 are assembled by fastening bolts using their own mounting points, the fixture 3 with the split headlamp 2 is moved and the front frame 4 is fixed on the fixture 3. Specifically, the positioning round pin 311 is connected to the square hole 41 on one side of the front frame 4, and the positioning prismatic pin 312 is connected to the square hole 41 on the other side of the front frame 4.

[0101] Continue to push the fixture 3 forward, and stop when the second positioning plate 3141 and the first positioning plate 313 on the fixture 3 contact the corresponding mounting surface 42 and the mounting plane 43 on the front frame 4, respectively. At this time, operate the valve island 33 on the fixture 3, and the first clamping device 314 and the second clamping device 318 start to work; specifically:

[0102] The telescopic end of the first cylinder 3142 on the first clamping device 314 drives the first clamping rod 3143 to clamp the back of the front frame 4, and the telescopic end of the second cylinder 3182 on the second clamping device 318 drives the second clamping rod 3183 to clamp the back of the front frame 4; at this time, the connection relationship between the harness 3 and the front frame 4 is that there is a positioning point at the front and a clamping point at the rear, so as to realize a stable connection between the positioning front frame 4 and the harness 3;

[0103] Step 5: Use a fastening tool to fix the split headlamp 2 and the vehicle body 1; specifically, the split headlamp 2 is fastened to the headlamp upper bracket 12 and the headlamp lower bracket 11 through the X-direction mounting hole 21, and the split headlamp 2 is fastened to the headlamp side bracket 13 through the Y-direction fixing surface 22;

[0104] Step 6: drive the valve island 33 connected to each cylinder on the fixture 3, and then control the retracting of the telescopic ends of the third cylinder 3192, the fourth cylinder 3202 and the fifth cylinder 3212, so as to achieve the separation of the split headlamp 2 from the fixture 3; then control the retracting of the telescopic ends of the first cylinder 3142 and the second cylinder 3182, so as to achieve the separation of the front frame 4 from the fixture 3;

[0105] Step seven, remove the fixture 3, and then complete the installation of the front protection mask 5 and the front end frame 4, specifically: first align the locating pin 51 on the front protection mask 5 with the locating square hole 41 on the front end frame 4, and then push it gently with your hand to ensure that the locating pin 51 on the front protection mask 5 enters the square hole of the front end frame 4; the flange 54 of the front protection mask 5 cooperates with the anti-falling guide 23 and the assembly guide 24 on the split headlamp 2, and then tap the outer shell of the front protection mask 5, and fix the mounting surface 42, the mounting nut surface 44, and the second mounting nut surface 45 of the front end frame 4 to the first fixing surface 52, the second fixing surface 53, and the fixing surface 55 of the front protection mask 5 by bolts; thereby achieving dimensional control of the split headlamp 2 and the front protection mask 5.

[0106] Example 2

[0107] A split headlamp and front guard shield size control structure mainly comprises a vehicle body 1, a split headlamp 2, a fixture 3, a front end frame 4, a front guard shield 5, and an adjustable nut 6. The front end frame 4 is mounted on the vehicle body 1 by fastening bolts, and the two form a process assembly.

[0108] The installation of the front frame 3 to the vehicle body 1 must be completed before the split headlamp 2 is installed on the vehicle body 1, and the positioning of the split headlamp 2 on the fixture 3 can be done in any order according to the actual process arrangement. This embodiment is described by taking the front frame 3 being installed on the vehicle body 1 as an example:

[0109] First, install the front-end frame 3 onto the vehicle body 1, and install the adjustable nut onto the X-direction mounting hole 21 of the split headlamp 2. Then position the split headlamp 2 onto the positioning unit of the fixture 3, ensuring that the positioning components fit together and that there is no interference between the first guide block 315 and the split headlamp 2. Then operate the valve island 33 on the fixture 3 to drive the third clamping device 319 to work, so that the split headlamp 2 remains stable on the fixture 3. Operate the fixture 3, and use the moving mechanism 34 to achieve operation in space. Align the circular positioning pin 311 and the positioning diamond pin 312 of the fixing parts of the fixture 3 with the positioning square hole 41 on the front-end frame 4 at the same time, and align the first positioning plate 313313 on the fixture 3 with the mounting surface 42 and the mounting plane 43 on the front-end frame 4. Once in place, operate the valve island 33 on the fixture 3 to achieve clamping. Then, the X-direction mounting hole 21 and the Y-direction fixing surface 22 on the split headlamp 2 are fixedly connected with the headlamp lower bracket 11, the headlamp upper bracket 12, and the headlamp side bracket 13 on the vehicle body 1 by using fixing bolts. Then, the valve island 33 is operated to open the first clamping device 314 and the third clamping device 319 on the fixture 3, and the fixture 3 is moved to be separated from the vehicle body. Then, the front protection mask 5 is installed, and the square positioning pin 51 of the front protection mask 5 is aligned with the positioning square hole 41 on the front end frame 4 in sequence, and the first fixing surface 52 and the second fixing surface 53 on the front protection mask 5 are aligned with the mounting surface 42 and the mounting nut surface 44 on the front end frame 4, and then the side of the front protection mask 5 is aligned with the headlamp side bracket 13 area of ​​the vehicle body 1, and finally, the fixing surface 55 of the front protection mask 5 is aligned with the front end frame 4 to realize the assembly of the front protection mask 5. Thus, the size control of the front protection mask 5 and the split headlamp 2 is effectively guaranteed by the fixture.

[0110] When in use, the positioning round pin 311 is connected to the positioning square hole 41 on one side of the front frame 4, and the positioning prismatic pin 312 is connected to the positioning square hole 41 on the other side of the front frame 4; different positioning plates are respectively connected to the corresponding mounting surfaces 42 and mounting planes 43 on the front frame 4 to realize the positioning between the front frame 4 and the fixture 3;

[0111] A positioning square hole 41 is provided on the front end frame 4 for positioning the harness 3 and the front protection mask 5 and limiting the Y direction and Z direction of the harness 3 and the front protection mask 5.

[0112] A mounting surface 42 with a nut is provided on the front end frame 4, which is used to position the harness 3 and the front protection mask 5 and limit the upper X direction of the harness 3 and the front protection mask 5.

[0113] The front frame 4 is provided with a mounting plane 43 for limiting the lower X direction of the harness 3. The front frame 4 is provided with a mounting nut surface 44 for fixing the middle X direction position of the front protection mask 5. The front frame 4 is provided with a second mounting nut surface 45 for fixing the lower X direction position of the front protection mask 5. The front frame 4 first positions the harness 3, and after completing the work content of this process, the harness 3 is removed, and then the front protection mask 5 is positioned.

[0114] A headlamp lower bracket 11 , a headlamp upper bracket 12 , and a headlamp side bracket 13 are provided on the vehicle body 1 , and projection welding nuts are provided on the brackets for fixing the split headlamp 2 .

[0115] The split headlamp 2 is provided with two X-direction mounting holes 21 and a Y-direction fixing surface 22 on one side, wherein an adjustable nut 6 is mounted on the split headlamp 2. Further, the adjustable nut 6 is mounted on the X-direction mounting hole 21 of the split headlamp 2. The adjustable nut 6 is composed of an inner nut 61 and an outer nut 62, and the inner nut 61 and the outer nut 62 are firstly sleeved together through their own internal threads to form the adjustable nut 6. The upper part of the inner nut 61 has an exposed thread, which is sleeved together with the X-direction mounting hole 21 on the split headlamp 2 to form a whole.

[0116] The split headlamp 2 is provided with an anti-drop guide holder 23 for fixing the partial flange of the front protection mask 5 to prevent the partial flange of the front protection mask 5 from partially sagging due to the shape characteristics. The split headlamp 2 is provided with an assembly guide 24 to facilitate the partial side assembly of the front protection mask 5 and improve the ease of assembly.

[0117] The fixture 3 includes a frame 31, an electric wrench 32, a valve island 33, and a mobile structure 34. The electric wrench 32 and the valve island 33 are fixed to the frame 31 by fastening bolts, and the mobile structure 34 and the frame 33 are connected by a steering fixed structure to form an integral movable fixture. The mobile structure 34 is fixed to the upper side of the production line by a sliding guide rail, and can be moved to a certain spatial position, ensuring that the fixture 3 is easy to operate.

[0118] The frame 31 is provided with a fixed component in place and a positioning headlight component. The fixed component in place on the frame 31 includes a positioning device and a clamping device. The positioning device includes a positioning round pin 311, a positioning prism pin 312, and a positioning plate. The above positioning component units are connected to the frame 31 respectively using multiple groups of connecting blocks, limit pins, fixing bolts, and adjustment gaskets to form a whole with the frame 31. The structure also has the function of adjustable precision. The cylinder on the first clamping device 314 and the valve island 33 are connected through an air circuit to operate the valve island 33, control the normal opening and closing of the first clamping device 314, and ensure the convenience of the equipment operation.

[0119] further described; the positioning round pin 311, the positioning prismatic pin 312, the positioning plate is the positioning point after the fixture 3 is in place, and after being in place, they are in contact with the positioning points on the front frame 4 to ensure that the relative position of the fixture 3 is fixed after it is in place.

[0120] The positioning round pin 311 is a round positioning pin unit, which controls the Y and Z directions and cooperates with the positioning square hole 41 on one side of the front frame 4. The positioning prism pin 312 is a prism-shaped positioning pin unit, which controls the Z direction and cooperates with the positioning square hole 41 on the other side of the front frame 4. The positioning plate is a positioning surface, which controls the X direction and cooperates with the mounting surface 42 and the mounting plane 43 on the front frame 4 to ensure the relative position relationship with the front frame 4 after being in place.

[0121] The first clamping device 314 is a clamping unit after the fixture 3 is in place. By operating the valve island 33, the front end frame 4 is clamped and released to ensure the stability and convenience of the operation after positioning.

[0122] The positioning headlight component on the frame 31 also has a positioning device and a clamping device. The cylinder on the third clamping device 319 and the valve island 33 are connected through an air circuit to operate the valve island 33 and control the normal opening and closing of the third clamping device 319, thereby ensuring the convenience of the equipment operation.

[0123] Further described; the first guide block 315, the first special-shaped guide positioning block 317, the first positioning block 316 is the positioning surface of the split headlight 2 on the frame 31, which is used to ensure that the relative position of the split headlight 2 on the frame 31 is stable and accurate.

[0124] Further described; the first special-shaped guide positioning block 317 and the first positioning block 316 are provided with a positioning surface for positioning the split headlamp 2 in the Z direction, limiting the translation of the split headlamp 2 in the Z direction and the rotation of the X axis on the frame 31.

[0125] The first special-shaped guide positioning block 317 is also provided with a Y-direction positioning surface of the split headlamp 2 to limit the Y-direction translation of the split headlamp 2 on the frame 31 .

[0126] The first special-shaped guide positioning block 317, the first positioning block 316, and the second special-shaped guide positioning block 3217 are all provided with positioning surfaces for positioning the split headlamp 2 in the X direction, and there are three positions in total, which limit the X-direction translation, X-axis rotation, and Z-axis rotation of the split headlamp 2 on the frame 31. The position of the split headlamp 2 on the frame 31 is fixed.

[0127] The second clamping device 319 is a clamping unit after the split headlamp 2 is installed in place on the frame 31. By operating the valve island 33, the split headlamp 2 is clamped and released to ensure the stability and convenience of the operation after positioning.

[0128] The front protection mask 5 is provided with a positioning pin 51, which cooperates with the positioning square hole 41 on the front end frame 4 to position the spatial position of the front protection mask in the Z and Y directions as a whole. The front protection mask 5 is provided with a fixing point, which is fixed to the front end frame 4 by bolts respectively, so as to achieve the stability of the front protection mask 5 after the overall assembly. The front protection mask 5 is provided with a side flange 54, which cooperates with the split headlight 2 to play a role in local stabilization and reinforcement. The lower part of the front protection mask 5 is provided with a fixing surface 55, which is connected to the mounting nut surface 45 on the front end frame 4 by bolts, which not only plays a role in strengthening the lower part, but also realizes the function of adjusting the spatial position of the lower part in the X direction.

[0129] A method for controlling the size of a split headlamp and a front bumper mask includes the following contents:

[0130] First, position the split headlamp 2 on the fixture 3, which is provided with an adjustable nut 6; after the front frame 4 and the vehicle body 1 are assembled, move the fixture 3 with the split headlamp 2 installed, and fix it to the front frame 4 through the fixing points on the fixture 3. Then use the fastening tool to fix the split headlamp 2 and the vehicle body 1 through the fixing points on the vehicle body 1. After the operation is completed, remove the fixture 3, and then install the front protection mask 5, so as to achieve the size control of the split headlamp 2 and the front protection mask 5.

[0131] According to the above method, the positioning point of the split headlamp 2 on the fixture 3 is the clearance surface positioning, so that the clearance surface of the split headlamp 2 can be controlled to be in a spatially stable position. The face difference control method of the split headlamp 2 realizes the dimensional compensation of the assembly error with the vehicle body by adding an adjustable nut 6. The important positioning points of the fixture 3 and the front protection mask 5 are both set on the front end frame 4, and the positioning points are consistent, so as to realize the spatial assembly position of the front protection mask 5. Therefore, by using the fixture 3 to position the split headlamp 2 and then assembling the front protection mask 5, it can effectively ensure that the front protection mask 5 and the split headlamp 2 are fully matched in size.

[0132] By using assembly aids, the size chain link is interrupted to eliminate the body size deviation.

[0133] The fixture 3 is provided with a fixed electric wrench, which can realize the assembly of the blind area.

[0134] The fixing points of the harness 3 and the front protection mask 5 are arranged in the same manner, thereby ensuring consistency after assembly.

[0135] The split headlamp on the fixture 3 is positioned by a gap surface, thereby further reducing the deviation after installation.

[0136] The split headlamp 2 is provided with an adjustable nut 6, which can realize automatic compensation of X-direction deviation and further reduce the manufacturing deviation of the vehicle body.

[0137] The split headlamp 2 is provided with a guiding device and an anti-falling device to ensure the smoothness of the assembly of the front protection mask.

[0138] The amount of the hole between the body mounting hole and the split headlamp 2 is ≥2mm, preferably 3mm, so as to further reduce manufacturing deviation.

[0139] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0140] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0141] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A split headlamp and front shield size control structure, characterized in that: The vehicle comprises a vehicle body (1), a split headlamp (2), a fixture (3), a front end frame (4), and a front protection mask (5); wherein the front end frame (4) is fixed on the front anti-collision beam of the vehicle body (1), the front protection mask (5) is fixed on the front end frame (4), the split headlamp (2) is respectively installed in the openings on both sides of the front protection mask (5), and the split headlamp (2) is fixed on the vehicle body (1); wherein the fixture (3) comprises a frame (31), a front end frame positioning mechanism, and a split headlamp positioning mechanism; wherein the front end of the frame (31) is provided with a front end frame positioning mechanism, and the lower end and the outer side of the front end are respectively provided with a first split headlamp positioning mechanism and a second split headlamp positioning mechanism; The frame (31) is a rectangular frame body, and the front frame positioning mechanism comprises a positioning round pin (311), a positioning prism pin (312), a first positioning plate (313), a first clamping device (314) and a second clamping device (318) for clamping the front frame (4), wherein connecting frames (322) are fixed on both sides of the cross bar above the rectangular frame body, the first clamping device (314) is fixed on the top of the connecting frame (322) through the second positioning plate (3141), and the positioning prism pin (312) is fixed on one side of the connecting frame (322). A positioning round pin (311) is fixed to the front end of the lower part of the frame (322) on the other side; second clamping devices (318) are respectively provided on both sides of the cross bar below the frame (31); first positioning plates (313) are respectively fixed to the cross bars of the frame (31) inside the second clamping devices (318); a first split headlight positioning mechanism is fixed to the end of the cross bar of the frame (31) located outside the second clamping device (318); and a second split headlight positioning mechanism is provided on the outer side of the vertical bar of the frame (31).

2. A split headlamp and front shield size control structure according to claim 1, characterized in that: The first clamping device (314) includes a second positioning plate (3141), a first cylinder (3142), a first clamping rod (3143), and a first cylinder connecting plate (3144), wherein the second positioning plate (3141) is fixed above the connecting frame (322), the first cylinder (3142) is fixed on the first cylinder connecting plate (3144), the second positioning plate (3141) and the first cylinder connecting plate (3144) are connected together by a pin shaft, the first clamping rod (3143) is connected to the second positioning plate (3141) by a pin shaft, and the first clamping rod (3143) is aligned with the telescopic end of the first cylinder (3142) at the top and aligned with the second positioning plate (3141) at the bottom.

3. A split headlamp and front shield size control structure according to claim 2, characterized in that: The second positioning plate (3141) includes a horizontal plate and a vertical plate fixed together, wherein the top of the vertical plate extends toward the front end to form an extension plate, the horizontal plate is fixed on the connecting frame (322), the rear end of the extension plate and the first cylinder connecting plate (3144) are connected together through a pin shaft, and the first clamping rod (3143) is connected to the front end of the extension plate through a pin shaft.

4. A split headlamp and front shield size control structure according to claim 1, characterized in that: The second clamping device (318) comprises a second cylinder (3182), a second clamping rod (3183), and a second cylinder connecting plate (3184), wherein the second cylinder (3182) is fixed on the second cylinder connecting plate (3184), and the first connecting plates (323) are respectively fixed on both sides of the cross bar below the frame (31), and the bottom of the first connecting plate (323) extends forward to form a connecting short plate (3181), and the rear end of the connecting short plate (3181) and the second cylinder connecting plate (3184) are connected together through a pin shaft, and the second clamping rod (3183) is connected to the front end of the connecting short plate (3181) through a pin shaft, and the lower part of the second clamping rod (3183) is aligned with the telescopic end of the second cylinder (3182), and the upper part is aligned with the first connecting plate (323).

5. The split headlamp and front shield size control structure according to claim 1, characterized in that: The first split headlamp positioning mechanism comprises a first guide block (315), a first positioning block (316), a first special-shaped guide positioning block (317) and a third clamping device (319) for clamping the split headlamp (2), wherein the first positioning block (316) is fixed to the end of the cross bar below the frame (31) through a mounting plate, a first special-shaped guide positioning block (317) is provided on the cross bar below the frame (31) inside the first positioning block (316), the first guide block (315) is connected to the mounting plate below the first positioning block (316) through an extension plate, and a third clamping device (319) is provided on the mounting plate between the first guide block (315) and the first special-shaped guide positioning block (317).

6. The split headlamp and front shield size control structure according to claim 1, characterized in that: The third clamping device (319) for clamping the split headlamp (2) comprises a third cylinder (3192), a third clamping rod (3193), and a third cylinder connecting plate (3194), wherein the third cylinder (3192) is fixed on the third cylinder connecting plate (3194), a second connecting plate (3191) is provided on the mounting plate between the first guide block (315) and the first positioning block (317), a first connecting block (324) is provided at the front end of the second connecting plate (3191), the middle part of the first connecting block (324) and the third cylinder connecting plate (3194) are connected together by a pin shaft, the third clamping rod (3193) is connected to the front end of the first connecting block (324) by a pin shaft, and the left side of the third clamping rod (3193) is aligned with the second connecting plate (3191), and the right side is aligned with the telescopic end of the third cylinder (3192).

7. The split headlamp and front shield size control structure according to claim 1, characterized in that: The second split headlamp positioning mechanism comprises a bracket, an upper positioning mechanism and a lower positioning mechanism, wherein the bracket is fixed on the outside of the vertical rod of the frame (31), and the upper positioning mechanism and the lower positioning mechanism are respectively arranged at the upper and lower ends in front of the bracket.

8. The split headlamp and front shield size control structure according to claim 1, characterized in that: The upper positioning mechanism comprises a second special-shaped guide positioning block (3217), a fourth clamping device (320) for clamping the split headlamp (2), and a third positioning plate (3201), wherein the third positioning plate (3201) is fixed above the bracket, the fourth clamping device (320) is provided above the third positioning plate (3201), and the second special-shaped guide positioning block (3217) is provided below.

9. The split headlamp and front shield size control structure according to claim 1, characterized in that: The lower positioning mechanism comprises a third special-shaped guide positioning block (3161), a fifth clamping device (321) for clamping the split headlamp (2), a fourth positioning plate (3211) and a second connecting block (3215), wherein the fourth positioning plate (3211) is fixed below the bracket and the second connecting block (3215) is fixed thereon, the third special-shaped guide positioning block (3161) is fixed at the front end of the second connecting block (3215), and the fifth clamping device (321) is connected to the second connecting block (3215) via a connecting rod (3216).

10. The split headlamp and front shield size control structure according to claim 1, characterized in that: The fourth clamping device (320) comprises a fourth cylinder (3202), a fourth clamping rod (3203) and a fourth cylinder connecting plate (3204), wherein the fourth cylinder (3202) is fixed on the fourth cylinder connecting plate (3204), the middle part of the cross bar above the third positioning plate (3201) and the fourth cylinder connecting plate (3204) are connected together by a pin shaft, the fourth clamping rod (3203) is connected to the front end of the cross bar above the third positioning plate (3201) by a pin shaft, and the fourth clamping rod (3203) is aligned with the telescopic end of the fourth cylinder (3202) at the top and the second guide block (3217) at the bottom.

11. The split headlamp and front shield size control structure according to claim 1, characterized in that: The fifth clamping device (321) comprises a fifth cylinder (3212), a fifth clamping rod (3213) and a fifth cylinder connecting plate (3214), wherein the fifth cylinder (3212) is fixed on the fifth cylinder connecting plate (3214), the top of the connecting rod (3216) is fixed on the outer side of the second connecting block (3215), the fifth cylinder connecting plate (3214) and the middle part of the connecting rod (3216) are connected together by a pin shaft, the fifth clamping rod (3213) is connected to the bottom of the connecting rod (3216) by a pin shaft, and the top of the fifth clamping rod (3213) is aligned with the front end surface of the connecting rod (3216), and the bottom is aligned with the telescopic end of the fifth cylinder (3212).

12. The split headlamp and front shield size control structure according to claim 1, characterized in that: The two sides of the front end frame (4) are provided with a mounting surface (42) with a nut, a positioning square hole (41), and a mounting nut surface (44) in sequence from top to bottom, and the bottom of the front end frame (4) is provided with a second mounting nut surface (45); The front protective mask (5) has two inner sides which are provided with a first fixing surface (52), a positioning pin (51) and a second fixing surface (53) in sequence from top to bottom. The inner circles of the openings on both sides of the front protective mask (5) are provided with flanges (54). A fixing surface (55) is provided below the front protective mask (5), wherein the positioning pin (51) of the front protective mask (5) is positioned in the positioning square hole (41) of the front end frame (4), the first fixing surface (52) and the second fixing surface (53) are respectively fastened to the mounting surface (42) and the mounting nut surface (44) on the front end frame (4), and the fixing surface (55) is fastened to the second mounting nut surface (45) on the front end frame (4).

13. The split headlamp and front shield size control structure according to claim 1, characterized in that: The vehicle body (1) is provided with a headlamp lower bracket (11), a headlamp upper bracket (12) and a headlamp side bracket (13); the outer ring of the split headlamp (2) is provided with an X-direction mounting hole (21) and a Y-direction fixing surface (22); an anti-dropping guide holder (23) is provided below the split headlamp (2); the outer ring of the lampshade of the split headlamp (2) is provided with a plurality of assembly guides (24); the anti-dropping guide holder (23) and the assembly guides (24) are both clamped on the flange (54); the split headlamp (2) is fastened to the headlamp upper bracket (12) and the headlamp lower bracket (11) respectively through the X-direction mounting hole (21); the split headlamp (2) is fastened to the headlamp side bracket (13) through the Y-direction fixing surface (22).

14. The split headlamp and front shield size control structure according to claim 1, characterized in that: An adjustable nut (6) is installed in the X-direction mounting hole (21).

15. The split headlamp and front shield size control structure according to claim 13, characterized in that: The split headlamp (2) is fastened to the headlamp upper bracket (12) and the headlamp lower bracket (11) respectively through adjustable nuts (6) in the X-direction mounting holes (21).

16. The split headlamp and front shield size control structure according to claim 14, characterized in that: The adjustable nut (6) is composed of an inner nut (61) and an outer nut (62), wherein the inner nut (61) and the outer nut (62) are sleeved together through their own internal threads, and an exposed thread is provided on the upper part of the inner nut (61) for being threadedly connected to an X-direction mounting hole (21) on the split headlamp (2).

17. The split headlamp and front shield size control structure according to claim 12, characterized in that: The side surfaces of the connecting frame (322) inside the positioning round pin (311) and the positioning prismatic pin (312) are respectively provided with positioning plates for cooperating with the mounting surface (42) and the mounting plane (43) on the front end frame (4).

18. A method for controlling the size of a split headlamp and a front bumper mask using the split headlamp and front bumper mask size control structure according to any one of claims 1 to 7, characterized in that: It includes the following: Step 1: first install the split headlamp (2) on the fixture (3) to position the split headlamp (2), specifically: The first guide block (315) is used to cooperate with the bottom and side surfaces of the anti-leakage guide (23) of the split headlamp (2) to locate the initial installation position of one side of the lower part of the split headlamp (2); the third special-shaped guide positioning block (3161) is used to cooperate with the contour surface of the other side of the lower part of the split headlamp (2); the outer plane of the first special-shaped guide positioning block (317) is used to cooperate with the right side contour of the split headlamp (2); and the second special-shaped guide positioning block (3217) is used to cooperate with the upper contour of the split headlamp (2); and the initial spatial placement of the split headlamp (2) is achieved; Step 2: Hold the split headlamp (2) and move it within the positioning space of the fixture (3), ensure that the assembly guide (24) at the bottom of the split headlamp (2) fits with the Z-direction fixing surfaces of the first positioning block (316) and the third special-shaped guide positioning block (3161) on the fixture (3), ensure that the right contour surface of the split headlamp (2) fits with the left Y-direction of the first special-shaped guide positioning block (317); ensure that the front surface shell of the split headlamp (2) fits with the X-direction surfaces of the first positioning block (316), the second special-shaped guide positioning block (3217), and the third special-shaped guide positioning block (3161); and achieve accurate position alignment of the split headlamp (2) on the fixture (3); Step 3: The third cylinder (3192), the fourth cylinder (3202), and the fifth cylinder (3212) start working at the same time, so that the telescopic end of the third cylinder (3192) drives the third clamping rod (3193) to clamp the back shell of the split headlamp (2), the telescopic end of the fourth cylinder (3202) drives the fourth clamping rod (3203) to clamp the back shell of the split headlamp (2), and the telescopic end of the fifth cylinder (3212) drives the fifth clamping rod (3213) to clamp the back shell of the split headlamp (2); Step 4: After the front frame (4) and the vehicle body (1) are assembled by fastening bolts using their own mounting points, the fixture (3) on which the split headlight (2) is mounted is moved to fix the front frame (4) on the fixture (3), specifically: the positioning round pin (311) is connected in a square hole (41) on one side of the front frame (4), and the positioning prismatic pin (312) is connected in a square hole (41) on the other side of the front frame (4); The tool (3) is pushed forward continuously until the second positioning plate (3141) and the first positioning plate (313) on the tool (3) contact the corresponding mounting surface (42) and the mounting plane (43) on the front frame (4), respectively, and the first clamping device (314) and the second clamping device (318) start to work. Specifically: The telescopic end of the first cylinder (3142) on the first clamping device (314) drives the first clamping rod (3143) to clamp the back side of the front end frame (4), and the telescopic end of the second cylinder (3182) on the second clamping device (318) drives the second clamping rod (3183) to clamp the back side of the front end frame (4); thus achieving a stable connection between the positioning front end frame (4) and the fixture (3); Step 5, fixing the split headlamp (2) and the vehicle body (1); specifically, the split headlamp (2) is respectively fastened to the headlamp upper bracket (12) and the headlamp lower bracket (11) through the X-direction mounting hole (21), and the split headlamp (2) is fastened to the headlamp side bracket (13) through the Y-direction fixing surface (22); Step six, controlling the retractable ends of the third cylinder (3192), the fourth cylinder (3202) and the fifth cylinder (3212) to be retracted, thereby realizing the separation of the split headlight (2) from the fixture (3); and then controlling the retractable ends of the first cylinder (3142) and the second cylinder (3182) to be retracted, thereby realizing the separation of the front end frame (4) from the fixture (3); Step seven, remove the fixture (3), and then complete the installation of the front protection mask (5) and the front end frame (4), specifically: first align the positioning pin (51) on the front protection mask (5) with the positioning square hole (41) on the front end frame (4), and then push it gently by hand to ensure that the positioning pin (51) on the front protection mask (5) enters the square hole of the front end frame (4); the flange (54) of the front protection mask (5) cooperates with the anti-falling guide (23) and the assembly guide (24) on the split headlamp (2), and the installation surface (42), the installation nut surface (44), and the second installation nut surface (45) of the front end frame (4) are respectively fixed to the first fixing surface (52) and the second fixing surface (53) and the fixing surface (55) of the front protection mask (5) by bolts; thereby achieving the size control of the split headlamp (2) and the front protection mask (5).

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