An auxiliary detection tool for a vehicle door hemming assembly

Abstract

The application discloses an auxiliary detection tool for a vehicle door edge covering assembly, which comprises a base having a mounting surface extending in the up-down direction, and a hanging unit is arranged on the upper end of the mounting surface; a positioning mechanism comprises a first positioning unit, a second positioning unit and a third positioning unit which are arranged in a staggered manner on the mounting surface, wherein the second positioning unit and the third positioning unit are movably arranged in the front-rear direction, and the first positioning unit can be combined with one of the second positioning unit and the third positioning unit to form a first positioning group and a second positioning group; a plurality of reference units are arranged on the circumferential edge of the mounting surface in a spaced manner, and each reference unit is formed with a reference surface; wherein the first positioning unit, the second positioning unit, the third positioning unit, a plurality of pressing assemblies and the plurality of reference units are arranged in a staggered manner. The tool is suitable for detecting and positioning the same type of vehicle door edge covering assembly, so that the same detection and positioning conditions are provided, and the consistency of the measurement conditions and the accuracy of the measurement results are ensured.

Description

Technical Field

[0001] This invention relates to the field of automotive testing technology, specifically to an auxiliary testing fixture for a car door edge assemblies. Background Technology

[0002] As customers' demands for automobiles increase, they not only require higher aesthetic appeal but also higher performance, quality, and craftsmanship. Consequently, the requirements for surface finishes and clearances across the entire vehicle are also increasing. Door installation, being the final step in the body-in-white assembly, is the ultimate manifestation of these surface finishes and clearances, thus requiring high precision in the door edge-wrapping assembly. Currently, pre-installed sliding door edge-wrapping assemblies on the welding adjustment line are typically subject to random sampling inspection. This increases the risk of missing defective sliding door edge-wrapping assemblies, impacting the normal production cycle of subsequent processes. Summary of the Invention

[0003] The main objective of this invention is to provide an auxiliary inspection fixture for door edge trim assemblies, specifically designed for use in welding adjustment lines.

[0004] To achieve the above objectives, the present invention provides an auxiliary inspection fixture for a car door edge trim assembly, comprising:

[0005] The base has a mounting surface extending vertically, and a hanging unit protrudes from the upper end of the mounting surface for hanging the door edging assembly.

[0006] The positioning mechanism includes a first positioning unit, a second positioning unit, and a third positioning unit installed on the mounting surface and staggered. The second positioning unit and the third positioning unit are both movable in the front-rear direction. The first positioning unit can be combined with one of the second positioning unit and the third positioning unit to form a first positioning group and a second positioning group. The first positioning group or the second positioning group is selected for positioning the door edge assembly.

[0007] Multiple clamping components are spaced apart at the peripheral edge of the mounting surface. Each clamping component has an abutment portion that is movably disposed in the front-rear direction to abut against the door edging assembly; and,

[0008] Multiple reference units are arranged at intervals on the peripheral edge of the mounting surface. Each reference unit forms a reference surface, which is used to adapt to the contour of the door edge assembly so that the gap surface difference of the door edge assembly can be measured by a measuring tool.

[0009] The first positioning unit, the second positioning unit, the third positioning unit, the multiple pressing components, and the multiple reference units are all staggered.

[0010] Optionally, the positioning mechanism includes three fixed pillars protruding from the mounting surface. The three fixed pillars are spaced apart along the periphery of the mounting surface to form the first positioning unit. All three fixed pillars are used to abut against the door edging assembly.

[0011] Optionally, the positioning mechanism further includes two first positioning structures mounted on the mounting surface and spaced apart, each first positioning structure comprising:

[0012] The mounting base is fixedly installed on the mounting surface and has a mounting hole extending in the front-to-back direction. The sidewall of the mounting hole has a hanging groove extending in the left-to-right direction and a guide groove extending in the front-to-back direction. The guide groove is located behind the hanging groove and communicates with it.

[0013] A positioning pin is movably installed in the mounting hole in the front-back direction. A limiting rod is protruding from the outer periphery of the positioning pin. The limiting rod slides through the guide groove and can slide in the guide groove and slide into the hanging groove, so that the part of the positioning pin extending out of the mounting hole can cooperate with the positioning hole on the door edge assembly.

[0014] The second positioning unit includes two positioning pins.

[0015] Optionally, the positioning mechanism further includes a plurality of second positioning structures disposed on the mounting surface, the plurality of second positioning structures being spaced apart along the periphery of the mounting surface, each second positioning structure comprising:

[0016] A fixing base, mounted on the mounting surface, has a through hole extending in the front-to-back direction. A groove is recessed on one side of the fixing base in the left-to-right direction. The groove's left-to-right walls extend through the inner wall of the through hole. The groove's two vertical walls have a first locking interface and a second locking interface spaced apart in the front-to-back direction.

[0017] The positioning post is movably installed in the through hole in the front-rear direction. A lever is protruding from the outer periphery of the positioning post. The lever slides through the groove and can slide in the groove to the first card interface or the second card interface, so that the part of the positioning post extending out of the through hole can abut against the periphery of the door edge assembly.

[0018] The third positioning unit includes a plurality of the positioning posts.

[0019] Optionally, each of the clamping components includes:

[0020] Support, installed on the mounting surface;

[0021] A rotating arm extends laterally, one end of which has an abutment facing the mounting surface, and the other end is rotatably mounted on the support along an axis extending vertically; and,

[0022] The first drive cylinder is installed on the outer side of the support and extends in the front-rear direction. The cylinder rod of the first drive cylinder is driven to the other end of the rotating arm and is used to drive the rotating arm to rotate so as to move the abutment to abut or separate from the door edge assembly.

[0023] The abutting portion includes the abutting head.

[0024] Optionally, the mounting surface has two limiting posts on one side arranged in the left-right direction. The two limiting posts are arranged at intervals in the up-down direction and extend in the front-back direction to contact the periphery of the door edge assembly, thereby limiting the mounting position of the door edge assembly.

[0025] Optionally, the ends of each of the limiting posts are inclined away from the hanging unit.

[0026] Optionally, the auxiliary testing fixture for the door edge assembly further includes an abutment structure mounted on the mounting surface. The abutment structure includes a second drive cylinder and an abutment block mounted on the end of the cylinder rod. The second drive cylinder extends in the left-right direction and is used to drive the abutment block to move left and right so as to abut against the periphery of the door edge assembly.

[0027] Optionally, the auxiliary testing fixture for the door edge assembly further includes two auxiliary support structures disposed on the mounting surface and spaced apart in the vertical direction, each of the auxiliary support structures comprising:

[0028] A connecting seat, disposed on the mounting surface, the connecting seat having a threaded connecting hole extending in the front-rear direction; and,

[0029] An adjusting screw, the screw end of which is threadedly engaged with the threaded connection hole, and the end of the adjusting screw away from the mounting surface is used to abut against the door edging assembly.

[0030] Optionally, the base includes a bottom plate extending in the left-right direction and a base plate disposed on the bottom plate and extending in the up-down direction. The lower end surface of the bottom plate is provided with a plurality of movable wheels, which are spaced apart circumferentially along the lower end surface of the base. The side of the base plate disposed in the front-back direction is the mounting surface.

[0031] In the technical solution of this invention, during testing, the door edge assembly is first hung on the mounting unit for coarse positioning. Then, either the first positioning group or the second positioning group is selected for fine positioning of the door edge assembly, ensuring that the door edge assembly has the correct testing position on the auxiliary testing fixture. Next, multiple clamping components are used to press and fix the door edge assembly onto the auxiliary testing fixture, ensuring that the door edge assembly maintains the correct testing position determined by the positioning throughout the testing process. Finally, the contour of the door edge assembly is measured using corresponding reference units as testing benchmarks, and the gap and surface difference of the door edge assembly are measured using gauges such as gap rulers and surface difference tables. The pass / fail status is determined based on the measurement results. Thus, the auxiliary testing fixture allows for the testing and positioning of the door edge assembly, ensuring that door edge assemblies in the same batch have the same testing and positioning conditions, guaranteeing consistency in measurement conditions and accuracy of measurement results. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of an embodiment of the auxiliary inspection fixture for the door edge trim assembly provided by the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure of the reference unit;

[0035] Figure 3 for Figure 1 A schematic diagram of the first positioning structure in the middle;

[0036] Figure 4 for Figure 1 A schematic diagram of the second positioning structure in the middle;

[0037] Figure 5 for Figure 1 Schematic diagram of the middle clamping assembly;

[0038] Figure 6 for Figure 1 Schematic diagram of the middle limiting column;

[0039] Figure 7 for Figure 1 A schematic diagram of the middle abutment structure;

[0040] Figure 8 for Figure 1 A schematic diagram of the auxiliary support structure in the middle;

[0041] Figure 9 A diagram showing the usage status of the auxiliary testing fixture for the door edge trim assembly provided by this invention.

[0042] Explanation of icon numbers:

[0043]

[0044]

[0045] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0048] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0049] As customers' demands for automobiles increase, they not only require higher aesthetic appeal but also higher performance, quality, and craftsmanship. Consequently, the requirements for surface finishes and clearances across the entire vehicle are also increasing. Door installation, being the final step in the body-in-white assembly, is the ultimate manifestation of these surface finishes and clearances, thus requiring high precision in the door edge-wrapping assembly. Currently, pre-installed sliding door edge-wrapping assemblies on the welding adjustment line are typically subject to random sampling inspection. This increases the risk of missing defective sliding door edge-wrapping assemblies, impacting the normal production cycle of subsequent processes.

[0050] In view of this, the present invention proposes an auxiliary inspection fixture for a car door edge trim assembly, which can inspect and position the car door edge trim assembly so that car door edge trim assemblies in the same batch have the same inspection and positioning conditions, ensuring the consistency of measurement conditions and the accuracy of measurement results. Figures 1 to 9 The image shows an embodiment of the auxiliary inspection fixture for the door edge trim assembly provided by the present invention.

[0051] like Figure 1 and Figure 2 As shown, the auxiliary testing fixture 100 for the door edge assembly provided by the present invention includes a base 1, a positioning mechanism 2, multiple clamping components 3, and multiple reference units 4. The base 1 has a mounting surface 121 extending vertically, and a hanging unit 121a protrudes from the upper end of the mounting surface 121 for hanging the door edge assembly 200. The positioning mechanism 2 includes a first positioning unit 2a, a second positioning unit 2b, and a third positioning unit 2c mounted on the mounting surface 121 and staggered. The second positioning unit 2b and the third positioning unit 2c are both movable in the front-rear direction. The first positioning unit 2a can be combined with one of the second positioning unit 2b and the third positioning unit 2c to form a first positioning group and a second positioning group. The first positioning group or the second positioning group is selected for positioning the door edge assembly; a plurality of clamping components 3 are spaced apart on the peripheral edge of the mounting surface 121, each clamping component 3 having an abutment portion 3a, the abutment portion 3a being movable in the front-rear direction so as to be able to abut against the door edge assembly 200; a plurality of reference units 4 are spaced apart on the peripheral edge of the mounting surface 121, each reference unit 4 forming a reference surface, the reference surface being adapted to the contour of the door edge assembly 200 so that the gap surface difference of the door edge assembly 200 can be measured by a measuring tool; wherein, the first positioning unit 2a, the second positioning unit 2b, the third positioning unit 2c, the plurality of clamping components 3, and the plurality of reference units 4 are all staggered.

[0052] In the technical solution of this invention, during testing, the door edge assembly 200 is first hung on the hanging unit 121a for coarse positioning. Then, the first positioning group or the second positioning group is selected to perform fine positioning of the door edge assembly 200, so that the door edge assembly 200 has the correct testing position on the auxiliary testing fixture 100 of the door edge assembly 200. Next, the door edge assembly 200 is pressed and fixed on the auxiliary testing fixture 100 of the door edge assembly 200 by multiple clamping components 3, so that the door edge assembly 200 always maintains the correct testing position determined by the positioning during the testing process. Finally, the outline of the door edge assembly 200 is measured with the corresponding reference units 4 as the testing benchmark, and the gap surface difference of the door edge assembly 200 is measured by measuring tools such as gap rulers and surface difference tables, and whether it is qualified is determined according to the measurement results. Thus, the auxiliary inspection fixture 100 of the door edge assembly 200 can be used to inspect and position the door edge assembly 200, so that the door edge assemblies 200 in the same batch have the same inspection and positioning conditions, ensuring the consistency of measurement conditions and the accuracy of measurement results.

[0053] In this embodiment, as Figure 1 As shown, the positioning mechanism 2 includes three fixed supports 21 protruding from the mounting surface 121. The three fixed supports 21 are spaced apart along the periphery of the mounting surface 121 to form the first positioning unit 2a. Each of the three fixed supports 21 is used to abut against the door edge assembly 200. Thus, the three fixed supports 21 and the second positioning unit 2b combine to form the first positioning group, thereby performing precise positioning of the door edge assembly 200, so that the door edge assembly 200 has the correct detection position on the auxiliary detection fixture 100 of the door edge assembly 200.

[0054] In this embodiment, as Figure 1 and Figure 3As shown, the positioning mechanism 2 further includes two first positioning structures 22 installed on the mounting surface 121 and spaced apart. Each first positioning structure 22 includes a mounting base 221 and a positioning pin 222. The mounting base 221 is fixedly installed on the mounting surface 121 and has a mounting hole 221a extending in the front-rear direction. The side wall of the mounting hole 221a has a hanging groove 221b extending in the left-right direction and a guide groove 221c extending in the front-rear direction. The guide groove 221c is located behind the hanging groove 221b and is adjacent to the hanging groove. 221b is connected; the positioning pin 222 is movably installed in the mounting hole 221a in the front-rear direction, and a limiting rod 222a protrudes from the outer periphery of the positioning pin 222. The limiting rod 222a slides through the guide groove 221c and can slide in the guide groove 221c and slide into the hanging groove 221b, so that the part of the positioning pin 222 extending out of the mounting hole 221a can cooperate with the positioning hole on the door edge assembly 200; the second positioning unit 2b includes two positioning pins 222. Thus, the three fixed pillars 21 and the two positioning pins 222 are combined to form the first positioning group, thereby precisely positioning the door edge assembly 200. It should be noted that when the door edge assembly 200 is positioned using the first positioning group, i.e., the combination of the three fixed pillars 21 and the second positioning unit 2b (i.e., the multiple positioning pins 222), the third positioning unit 2c (i.e., the multiple positioning posts 232) retracts to avoid the second positioning unit 2b, ensuring the normal use of the first positioning group.

[0055] In this embodiment, as Figure 1 and Figure 4As shown, the positioning mechanism 2 further includes a plurality of second positioning structures 23 disposed on the mounting surface 121. The plurality of second positioning structures 23 are spaced apart along the periphery of the mounting surface 121. Each second positioning structure 23 includes: a fixing seat 231 and a positioning post 232. The fixing seat 231 is mounted on the mounting surface 121 and has a through hole 231a extending in the front-back direction. The fixing seat 231 has a recessed groove 231b on one side in the left-right direction. The groove 231b is disposed on the inner wall surface of the left-right direction wall surface, penetrating the through hole 231a. The groove 231b has through holes in the two upper-lower direction walls. A first card interface 231c and a second card interface 231d are arranged at intervals along the front and rear directions; a positioning post 232 is movably installed in the through hole 231a along the front and rear directions, and a lever 232a is protruding from the outer periphery of the positioning post 232. The lever 232a slides through the groove 231b and can slide within the groove 231b and slide into the first card interface 231c or the second card interface 231d, so that the part of the positioning post 232 extending out of the through hole 231a can abut against the periphery of the door edge assembly 200; the third positioning unit 2c includes a plurality of the positioning posts 232. Specifically, four positioning posts 232 are provided to combine with three fixed support posts 21 to form the second positioning group, thereby precisely positioning the door edge assembly 200. It should be noted that when the second positioning group, i.e., the three fixed support posts 21, is used in combination with the third positioning unit 2c (i.e., multiple positioning posts 232), to position the door edge assembly 200, the second positioning unit 2b (i.e., the two positioning pins 222) retracts to avoid the third positioning unit 2c, ensuring the normal use of the second positioning group.

[0056] In this embodiment, as Figure 1 and Figure 5As shown, each of the pressing components 3 includes a support 31, a rotating arm 32, and a first driving cylinder 33. The support 31 is mounted on the mounting surface 121. The rotating arm 32 extends in the left-right direction, and one end of the rotating arm 32 is provided with an abutment 32a facing the mounting surface 121. The other end is rotatably mounted on the support 31 along an axis extending in the up-down direction. The first driving cylinder 33 is mounted on the outer side of the support 31 and extends in the front-back direction. The cylinder rod of the first driving cylinder 33 is drivenly connected to the other end of the rotating arm 32 to drive the rotating arm 32 to rotate, thereby moving the abutment 32a to abut or separate from the door edging assembly 200. The abutment part 3a includes the abutment 32a. Thus, after the door edge assembly 200 is positioned, the first drive cylinder 33 drives the rotating arm 32 to rotate, so that the abutment 32a abuts against the door edge assembly 200. In this way, the multiple abutments 32a work together to press the door edge assembly 200 tightly, so that the door edge assembly 200 always maintains the correct detection position determined by the positioning during the detection process.

[0057] In this embodiment, as Figure 1 and Figure 6 As shown, the mounting surface 121 has two limiting posts 5 on one side arranged in the left-right direction. The two limiting posts 5 are arranged at intervals in the vertical direction and extend in the front-back direction to contact the periphery of the door edge assembly 200, thereby limiting the hanging position of the door edge assembly 200. In this way, when the door edge assembly 200 is hung on the mounting unit 121a for coarse positioning, the two limiting posts 5 limit the hanging position to ensure the accuracy of the coarse positioning of the door edge assembly 200 on the auxiliary testing fixture 100 of the door edge assembly.

[0058] In this embodiment, as Figure 6 As shown, the ends of each of the limiting posts 5 are inclined away from the mounting unit 121a. In this way, during the rough positioning of the door edge assembly 200, it is guided to facilitate the mounting of the door edge assembly 200.

[0059] In this embodiment, as Figure 1 and Figure 7As shown, the auxiliary inspection fixture 100 for the door edge assembly further includes an abutment structure 6 mounted on the mounting surface 121. The abutment structure 6 includes a second drive cylinder 61 and an abutment block 62 mounted on the end of the cylinder rod of the second drive cylinder 61. The second drive cylinder 61 extends in a left-right direction and is used to drive the abutment block 62 to move left and right so as to abut against the periphery of the door edge assembly 200. Thus, when the second positioning group is used to position the door edge assembly 200, the abutment structure 6 cooperates with the plurality of pressing components 3 to press the door edge assembly 200, thereby ensuring that the door edge assembly 200 always maintains the correct inspection position determined by the positioning during the inspection process. Specifically, the base 1 is provided with a control component, which is connected to multiple pressing components 3 and the second drive cylinder 61. Thus, when the first positioning group is used to press and limit the door edge assembly 200, after the door edge assembly 200 is positioned, the control component controls the multiple pressing components 3 to press the door edge assembly 200. When the second positioning group is used to press and limit the door edge assembly 200, the control component controls the multiple pressing components 3 and the second drive cylinder 61 to operate, so that the multiple pressing components 3 and the abutment structure 6 work together to press and limit the door edge assembly 200.

[0060] In this embodiment, as Figure 1 and Figure 8 As shown, the auxiliary inspection fixture 100 for the door edge assembly further includes two auxiliary support structures 7 disposed on the mounting surface 121 and spaced apart vertically. Each auxiliary support structure 7 includes a connecting seat 71 and an adjusting screw 72. The connecting seat 71 is disposed on the mounting surface 121 and has a threaded connection hole extending in the front-rear direction. The screw end of the adjusting screw 72 is threadedly engaged with the threaded connection hole, and the end of the adjusting screw 72 away from the mounting surface 121 is used to abut against the door edge assembly 200. Thus, by supporting the door edge assembly 200 with the adjusting screw 72, the mounting of the door edge assembly 200 on the auxiliary inspection fixture 100 for the door edge assembly is more stable.

[0061] In this embodiment, as Figure 1As shown, the base 1 includes a bottom plate 11 extending laterally and a base plate 12 disposed on the bottom plate 11 and extending vertically. The lower end face of the bottom plate 11 is provided with a plurality of movable wheels 111, which are spaced circumferentially along the lower end face of the base 1. One side of the base plate 12, positioned in the front-rear direction, serves as the mounting surface 121. This facilitates the movement of the auxiliary inspection fixture 100 of the door edge assembly to the welding adjustment line.

[0062] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An auxiliary inspection fixture for a car door edge trim assembly, characterized in that, include: The base has a mounting surface extending vertically, and a hanging unit protrudes from the upper end of the mounting surface for hanging the door edging assembly. The positioning mechanism includes a first positioning unit, a second positioning unit, and a third positioning unit installed on the mounting surface and staggered. The second positioning unit and the third positioning unit are both movable in the front-rear direction. The first positioning unit can be combined with one of the second positioning unit and the third positioning unit to form a first positioning group and a second positioning group. The first positioning group or the second positioning group is selected for positioning the door edge assembly. Multiple clamping components are spaced apart at the peripheral edge of the mounting surface. Each clamping component has an abutment portion that is movably disposed in the front-rear direction to abut against the door edging assembly; and, Multiple reference units are arranged at intervals on the peripheral edge of the mounting surface. Each reference unit forms a reference surface, which is used to adapt to the contour of the door edge assembly so that the gap surface difference of the door edge assembly can be measured by a measuring tool. The first positioning unit, the second positioning unit, the third positioning unit, the multiple pressing components, and the multiple reference units are all staggered. The positioning mechanism further includes two first positioning structures installed on the mounting surface and spaced apart, each first positioning structure comprising: The mounting base is fixedly installed on the mounting surface and has a mounting hole extending in the front-to-back direction. The sidewall of the mounting hole has a hanging groove extending in the left-to-right direction and a guide groove extending in the front-to-back direction. The guide groove is located behind the hanging groove and communicates with it. A positioning pin is movably installed in the mounting hole in the front-back direction. A limiting rod is protruding from the outer periphery of the positioning pin. The limiting rod slides through the guide groove and can slide in the guide groove and slide into the hanging groove, so that the part of the positioning pin extending out of the mounting hole can cooperate with the positioning hole on the door edge assembly. The second positioning unit includes two positioning pins.

2. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The positioning mechanism includes three fixed pillars protruding from the mounting surface. The three fixed pillars are spaced apart along the periphery of the mounting surface to form the first positioning unit. All three fixed pillars are used to abut against the door edging assembly.

3. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The positioning mechanism further includes a plurality of second positioning structures disposed on the mounting surface, the plurality of second positioning structures being spaced apart along the periphery of the mounting surface, each second positioning structure comprising: A fixing base, mounted on the mounting surface, has a through hole extending in the front-to-back direction. A groove is recessed on one side of the fixing base in the left-to-right direction. The groove's left-to-right walls extend through the inner wall of the through hole. The groove's two vertical walls have a first locking interface and a second locking interface spaced apart in the front-to-back direction. The positioning post is movably installed in the through hole in the front-rear direction. A lever is protruding from the outer periphery of the positioning post. The lever slides through the groove and can slide in the groove to the first card interface or the second card interface, so that the part of the positioning post extending out of the through hole can abut against the periphery of the door edge assembly. The third positioning unit includes multiple positioning posts.

4. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, Each of the aforementioned clamping components includes: Support, installed on the mounting surface; A rotating arm extends laterally, one end of which has an abutment facing the mounting surface, and the other end is rotatably mounted on the support along an axis extending vertically; and, The first drive cylinder is installed on the outer side of the support and extends in the front-rear direction. The cylinder rod of the first drive cylinder is driven to the other end of the rotating arm and is used to drive the rotating arm to rotate so as to move the abutment to abut or separate from the door edge assembly. The abutting portion includes the abutting head.

5. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The mounting surface has two limiting posts on one side in the left-right direction. The two limiting posts are arranged at intervals in the up-down direction and extend in the front-back direction to contact the periphery of the door edge assembly, thereby limiting the mounting position of the door edge assembly.

6. The auxiliary inspection fixture for the door edge trim assembly as described in claim 5, characterized in that, The ends of each of the limiting posts are inclined away from the hanging unit.

7. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The auxiliary testing fixture for the door edge assembly also includes an abutment structure mounted on the mounting surface. The abutment structure includes a second drive cylinder and an abutment block mounted on the end of the cylinder rod. The second drive cylinder extends in the left-right direction and is used to drive the abutment block to move left and right so as to abut against the periphery of the door edge assembly.

8. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The auxiliary testing fixture for the door edge assembly further includes two auxiliary support structures disposed on the mounting surface and spaced apart in the vertical direction. Each of the auxiliary support structures includes: A connecting seat, disposed on the mounting surface, the connecting seat having a threaded connecting hole extending in the front-rear direction; and, An adjusting screw, the screw end of which is threadedly engaged with the threaded connection hole, and the end of the adjusting screw away from the mounting surface is used to abut against the door edging assembly.

9. The auxiliary inspection fixture for the door edge trim assembly as described in claim 1, characterized in that, The base includes a bottom plate extending in the left-right direction and a base plate disposed on the bottom plate and extending in the up-down direction. The lower end surface of the bottom plate is provided with a plurality of movable wheels, which are spaced apart circumferentially along the lower end surface of the base. The mounting surface is located on one side of the base plate in the front-back direction.

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