Multi-angle detection tool for complex automotive upholstery

Abstract

The invention discloses a multi-angle detection gauge for complex automotive upholstery, and the gauge comprises a pedestal, and also comprises a top frame which is fixedly disposed at the top end of the pedestal, and is fixedly provided with a plurality of first visual cameras, and the installation angles of the first visual cameras are different; the three-axis mechanical arm is located on one side of the base; the clamping mechanism is fixedly mounted at one end of the three-axis mechanical arm; the clamping mechanism comprises a two-way electric guide rail which is fixedly installed at one end of the three-axis mechanical arm, and positioning mechanisms are symmetrically and movably connected to the two-way electric guide rail through a third sliding block. The two mounting frames are movably connected to the two-way electric guide rails through positioning mechanisms respectively; each group of cams comprises two cams, each group of cams is rotationally connected to the two mounting frames, and the two cams of each group are arranged in an up-down structure; the multi-angle detection gauge for the complex automobile interior trim part has the effect of guaranteeing the data measurement integrity of the interior trim part.

Description

Technical Field

[0001] This invention relates to the field of automotive interior parts manufacturing technology, and in particular to a multi-angle inspection tool for complex automotive interior parts. Background Technology

[0002] Complex automotive interior parts inspection fixtures are specialized measuring tools primarily used to inspect the dimensions, shape accuracy, and other related properties of automotive components (especially complex interior parts) to ensure product quality. Complex automotive interior parts inspection fixtures have a wide range of applications in the automotive production process, particularly in the product verification stage and the first trial assembly stage of batch parts.

[0003] Automotive interior components (such as dashboards and door panels) typically have complex three-dimensional curved surfaces and hidden structures. Traditional inspection methods rely on manual flipping or fixed clamping, which has the following limitations:

[0004] Detection blind spots: Fixed clamping points may obscure critical areas, leading to the missed detection of minor defects.

[0005] Inefficient: Manual operation is time-consuming and has poor repeatability, making it difficult to meet the needs of mass production. Summary of the Invention

[0006] This invention discloses a multi-angle inspection fixture for complex automotive interior parts, aiming to solve the technical problems of blind spots and low efficiency in inspection.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A multi-angle inspection fixture for complex automotive interior parts includes a base and a top frame, which is fixedly mounted on the top of the base. Multiple vision cameras are fixedly mounted on the top frame, and the multiple vision cameras are mounted at different angles. A three-axis robotic arm is located on one side of the base. A clamping mechanism is fixedly mounted on one end of the three-axis robotic arm.

[0009] The clamping mechanism includes: a bidirectional electric guide rail, fixedly mounted on one end of a three-axis robotic arm, with a positioning mechanism symmetrically connected to the bidirectional electric guide rail via a slider; two mounting brackets, each movably connected to the bidirectional electric guide rail via the positioning mechanism; two sets of cams, each set including two cams, each set of cams being rotatably connected to the two mounting brackets, with the two cams in each set arranged in an upper and lower structure; multiple motors, each used to drive the rotation of each cam; two sets of clamping plates, each set including two clamping plates, each set of clamping plates being arranged in an upper and lower structure; and multiple springs, respectively fixedly connected between the clamping plates and the corresponding mounting brackets.

[0010] The clamping mechanism further includes: multiple limiting rods, which are fixedly connected to the outer wall of one side of each clamping plate, and the multiple limiting rods are movably inserted into the inner wall of the mounting frame; multiple rotating shafts, which are fixedly connected to the inner wall of multiple cams, and the cams are rotatably connected to the mounting frame through the rotating shafts; and the output ends of multiple motors are respectively connected to the multiple rotating shafts.

[0011] By incorporating a clamping mechanism and mounting multiple vision cameras on the top frame, images of the interior trim parts can be simultaneously acquired from multiple perspectives through different angle arrangements, enabling comprehensive appearance inspection. During the clamping and vision inspection process, the starting of different motors drives the cams to rotate, causing the two clamping plates on each side to be staggered, with the lower and front clamping plates used to clamp the interior trim parts. After all angle data is detected, the upper clamping plate moves forward to clamp the exterior of the interior trim parts, and then the lower clamping plate retracts, exposing the previously clamped position. A scan by the vision cameras completes the full coverage of the interior trim parts, ensuring the integrity of the interior trim parts data measurement.

[0012] In a preferred embodiment, each of the clamps includes: a base plate, which is fixedly connected to the limiting rod; and an airbag, which is fixedly attached to one side of the outer wall of the base plate and is connected to an external air supply device through an inflation tube.

[0013] Each of the clamps further includes: multiple pressure sensing plates, fixedly distributed on one side of the outer wall of the airbag; and a connecting wire, which is electrically connected to the multiple pressure sensing plates and connected to an external pressure sensor.

[0014] Each of the clamps further includes: a shape memory alloy mesh, fixedly attached to one side of the outer wall of the airbag, with multiple pressure sensing pads positioned just between the shape memory alloy mesh and the airbag; and heat-insulating silicone, fixedly attached to one side of the outer wall of the shape memory alloy mesh.

[0015] By inflating the airbags when the clamps are inwardly held against the exterior of the interior trim, the shape memory alloy mesh and the heat-insulating silicone on the outside are pushed to conform to the irregularly shaped exterior surface of the automotive interior trim. Subsequently, the shape memory alloy mesh is energized and heated to its phase transition temperature, causing the alloy to actively contract. The heat-insulating silicone then applies a uniform clamping preload to the workpiece, achieving a dual stable clamping of "hard locking + soft anti-slip". Compared to the independent airbag clamping in existing technologies, the rigid support of the shape memory alloy can significantly improve the clamping hardness and anti-displacement stability, preventing the workpiece from shifting due to the three-axis robotic arm or its own gravity during the inspection process.

[0016] In a preferred embodiment, the positioning mechanism includes: two side plates, each fixedly connected to two sliders; and two longitudinal electric slide rails, each fixedly connected to the inner wall of the opposite side of the two side plates.

[0017] The positioning mechanism further includes: a slider 1, movably connected to a longitudinal electric slide rail; and a mounting groove, disposed on one inner wall of the slider 1.

[0018] The positioning mechanism further includes: a second vision camera, which is fixedly installed in the mounting slot; two second sliders, which are movably connected to two longitudinal electric slide rails respectively, and each mounting bracket is fixedly connected to one side of the outer wall of the second slider. The second slider and the clamping plate located below are at the same set height.

[0019] By incorporating a positioning mechanism, the placement height of the interior trim is measured by a vision camera before the clamping mechanism clamps it. After the measurement data is analyzed, the slider is driven to move to the center height of the interior trim. At this point, the trim is clamped inward, ensuring that the clamping plate clamps the trim close to the center. This ensures stability during the clamping process. Even when switching clamping plates, the clamping position remains close to the center of the trim because the two clamping plates are adjacent, thus ensuring clamping stability after switching clamping plates.

[0020] As described above, a multi-angle inspection fixture for complex automotive interior parts includes a base and a top frame, fixedly mounted on the top of the base, with multiple vision cameras fixedly mounted on the top frame at different angles; a three-axis robotic arm located on one side of the base; and a clamping mechanism fixedly mounted on one end of the three-axis robotic arm. The clamping mechanism includes: a bidirectional electric guide rail fixedly mounted on one end of the three-axis robotic arm, with a positioning mechanism symmetrically connected to the bidirectional electric guide rail via a slider; two mounting brackets movably connected to the bidirectional electric guide rail via the positioning mechanism; two sets of cams, each set including two cams, each set of cams rotatably connected to the two mounting brackets, with the two cams in each set arranged in an upper and lower configuration; multiple motors for driving the rotation of each cam; two sets of clamping plates, each set including two clamping plates, each set of clamping plates arranged in an upper and lower configuration; and multiple springs fixedly connected between the clamping plates and the corresponding mounting brackets. The multi-angle inspection fixture for complex automotive interior parts provided by this invention has the technical effect of ensuring the integrity of interior part data measurement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a multi-angle inspection fixture for complex automotive interior parts proposed in this invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the clamping mechanism of a multi-angle inspection fixture for complex automotive interior parts proposed in this invention.

[0023] Figure 3 This is a schematic diagram showing the disassembled positioning mechanism of a multi-angle inspection fixture for complex automotive interior parts proposed in this invention.

[0024] Figure 4 This is a schematic diagram showing the disassembled clamping mechanism of a multi-angle inspection fixture for complex automotive interior parts proposed in this invention.

[0025] Figure 5 This is a schematic diagram showing the disassembly of the clamping plate of a multi-angle inspection fixture for complex automotive interior parts proposed in this invention.

[0026] In the diagram: 1. Three-axis robotic arm; 2. Positioning mechanism; 3. Top frame; 4. Vision camera one; 5. Base; 6. Clamping mechanism; 7. Clamping plate; 201. Longitudinal electric slide rail; 202. Slider one; 203. Vision camera two; 204. Slider two; 205. Side plate; 206. Mounting slot; 601. Bidirectional electric guide rail; 602. Slider three; 603. Cam; 604. Motor; 605. Mounting bracket; 606. Limiting rod; 607. Spring; 608. Rotating shaft; 701. Base plate; 702. Airbag; 703. Pressure sensing plate; 704. Memory alloy mesh; 705. Thermal insulation silicone; 706. Connecting line one; 707. Inflation tube; 708. Connecting line two. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] The multi-angle inspection fixture for complex automotive interior parts disclosed in this invention is mainly applied to the measurement of interior parts.

[0029] Reference Figures 1-4 A multi-angle inspection fixture for complex automotive interior parts includes a base 5, and further includes: a top frame 3, which is fixedly installed on the top of the base 5, and multiple vision cameras 4 are fixedly installed on the top frame 3, with the multiple vision cameras 4 having different installation angles; a three-axis robotic arm 1, located on one side of the base 5; and a clamping mechanism 6, which is fixedly installed on one end of the three-axis robotic arm 1.

[0030] The clamping mechanism 6 includes: a bidirectional electric guide rail 601, fixedly mounted on one end of the three-axis robotic arm 1, with a positioning mechanism 2 symmetrically and movably connected to the bidirectional electric guide rail 601 via a slider 602; two mounting brackets 605, each movably connected to the bidirectional electric guide rail 601 via the positioning mechanism 2; two sets of cams 603, each set including two cams 603, each set of cams 603 rotatably connected to the two mounting brackets 605, with the two cams 603 in each set arranged in an upper and lower structure; multiple motors 604, each used to drive the rotation of each cam 603; two sets of clamping plates 7, each set including two clamping plates 7, each set of clamping plates 7 arranged in an upper and lower structure; multiple springs 607, fixedly connected between the clamping plates 7 and the corresponding mounting brackets 605; and multiple vision cameras 4 mounted on the top frame 3, which, through different angle arrangements, can simultaneously acquire images of the interior parts surface from multiple perspectives, achieving all-round appearance inspection. Simultaneously, the three-axis robotic arm 1 drives the clamping mechanism 6 to clamp the interior parts. During the inspection process, the three-axis robotic arm 1 can cooperate with the vision camera 4 to measure the interior parts at different angles. During the clamping process, the slider 602 on the bidirectional electric guide rail 601 drives the two sets of clamping plates 7 to move inward to clamp the interior parts. The starting of different motors 604 drives the cam 603 to rotate, which can drive the corresponding spring 607 to deform. Based on the pulling force of the spring 607 and the squeezing force of the cam 603, the clamping plate 7 is positioned. At this time, the two clamping plates 7 on each side are staggered, with the lower and front clamping plates 7 used to clamp the interior parts. After all angle data is detected, the corresponding motor 604 drives the upper clamping plate 7 to move forward and clamp the interior parts, and then the lower clamping plate 7 is retracted. At this time, the previously clamped position can be exposed. After scanning by the vision camera 4, the interior parts can be fully covered, ensuring the integrity of the interior parts data measurement.

[0031] Reference Figure 3 and Figure 4 In a preferred embodiment, the clamping mechanism 6 further includes: a plurality of limiting rods 606, which are respectively fixedly connected to one side of the outer wall of each clamping plate 7, and the plurality of limiting rods 606 are respectively movably inserted into the inner wall of the mounting frame 605; a plurality of rotating shafts 608, which are respectively fixedly connected to the inner wall of a plurality of cams 603, and the cams 603 are rotatably connected to the mounting frame 605 through the rotating shafts 608; and the output ends of a plurality of motors 604 are respectively connected to the plurality of rotating shafts 608.

[0032] Reference Figure 2 and Figure 3 In a preferred embodiment, the positioning mechanism 2 includes: two side plates 205, which are fixedly connected to two sliders 602 respectively; and two longitudinal electric slide rails 201, which are fixedly connected to the inner wall of the opposite side of the two side plates 205 respectively.

[0033] Reference Figure 2 and Figure 3 In a preferred embodiment, the positioning mechanism 2 further includes: a slider 202, movably connected to the longitudinal electric slide rail 201; and a mounting groove 206, disposed on one inner wall of the slider 202.

[0034] Reference Figure 2 and Figure 3 In a preferred embodiment, the positioning mechanism 2 further includes: a second vision camera 203, fixedly installed in the mounting groove 206; two second sliders 204, respectively movably connected to two longitudinal electric slide rails 201, and each mounting bracket 605 is fixedly connected to one side outer wall of the second slider 204. The second slider 204 and the clamping plate 7 located below are at the same height. Before the clamping mechanism 6 clamps the interior trim, the second slider 204 can be moved to the lowest point of the longitudinal electric slide rail 201, and then the first slider 202 is driven to move from top to bottom by the longitudinal electric slide rail 201. During the movement, the height is visually analyzed by the second vision camera 203. When the height of the interior trim is at the same level as the apex of the trim, the placement height of the trim can be measured. After measurement, the measurement data is analyzed and sent to the longitudinal electric slide rail 201, which drives the second slider 204 to move to the center height of the trim. Since the height of the second slider 204 is consistent with the height of the clamping plate 7 below, clamping inward at this time ensures that the clamping plate 7 clamps inward at a position close to the center of the trim, which can ensure the stability of the clamping process to a certain extent. Even if the clamping plate 7 is switched, since the two clamping plates 7 are set adjacently, the clamping position is still close to the center of the trim, which can also ensure the clamping stability after switching the clamping plate 7.

[0035] Reference Figure 5 In a preferred embodiment, each clamp 7 includes: a base plate 701, which is fixedly connected to the limiting rod 606; and an airbag 702, which is fixedly attached to one side of the outer wall of the base plate 701, and the airbag 702 is connected to an external air supply device through an inflation tube 707.

[0036] Reference Figure 5 In a preferred embodiment, each clamp 7 further includes: a plurality of pressure sensing plates 703, fixedly distributed on one side of the outer wall of the airbag 702; and a connecting wire 706, which is electrically connected to the plurality of pressure sensing plates 703 and connected to an external pressure sensor.

[0037] Reference Figure 5In a preferred embodiment, each clamping plate 7 further includes: a shape memory alloy mesh 704, fixedly attached to one side of the outer wall of the airbag 702, with multiple pressure sensing plates 703 positioned just between the shape memory alloy mesh 704 and the airbag 702; and heat-insulating silicone 705, fixedly attached to one side of the outer wall of the shape memory alloy mesh 704. When the clamping plate 7 is clamped inward to the outside of the interior trim, the airbag 702 is initially inflated and shaped, and then inflated and expanded, pushing the outer shape memory alloy mesh 704 and the heat-insulating silicone 705 to conform to the irregular outer surface of the automotive interior trim. At this time, the shape memory alloy is in a room-temperature relaxed state, passively conforming to the contour of the workpiece only with the deformation of the airbag 702, without generating a locking force. Subsequently, the shape memory alloy mesh 704 is electrically heated to its phase transition temperature. The alloy actively contracts, applying a uniform clamping preload to the workpiece through the heat-insulating silicone 705. At this time, the airbag 702 maintains a constant pressure and no longer inflates continuously, but instead serves as a flexible support base to prevent the rigid contraction of the shape memory alloy from damaging the workpiece. Meanwhile, the heat-insulating silicone 705 on the inner side isolates the heat of the shape memory alloy mesh 704, preventing high-temperature damage to the surface of the interior parts. On the other hand, its anti-slip texture significantly increases the friction with the interior parts. Combined with the locking force of the shape memory alloy, it achieves a dual stable clamping of "hard locking + soft anti-slip". Compared with the independent airbag clamping in the existing technology, the rigid support of the shape memory alloy can significantly improve the clamping hardness and anti-displacement stability, preventing the workpiece from shifting due to the three-axis robotic arm 1 or its own gravity during the inspection process.

[0038] Working principle: Multiple vision cameras 4 are installed on the top frame 3. By arranging them at different angles, they can simultaneously acquire surface images of interior parts from multiple perspectives, achieving all-round appearance inspection. At the same time, a three-axis robotic arm 1 drives a clamping mechanism 6 to clamp the interior parts. During the inspection process, the three-axis robotic arm 1 can cooperate with the vision cameras 4 to measure the interior parts from different angles. During clamping, the slider 602 on the bidirectional electric guide rail 601 drives two sets of clamping plates 7 to move inward, thereby clamping the interior parts. The starting of different motors 604 drives the cam 603 to rotate. The corresponding spring 607 can be deformed, and the clamping plate 7 is positioned based on the pulling force of the spring 607 and the squeezing force of the cam 603. At this time, the two clamping plates 7 on each side are staggered, with the lower and front clamping plates 7 used to clamp the interior parts. After all angle data is detected, the upper clamping plate 7 is moved forward to clamp the interior parts by the corresponding motor 604, and then the lower clamping plate 7 is retracted. At this time, the previously clamped position can be exposed. After scanning by the vision camera 4, the interior parts can be fully covered, ensuring the integrity of the interior parts data measurement.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-angle inspection fixture for complex automotive interior parts, comprising a base (5), characterized in that, Also includes: The top frame (3) is fixedly installed on the top of the base (5). Multiple vision cameras (4) are fixedly installed on the top frame (3), and the installation angles of the multiple vision cameras (4) are different. A three-axis robotic arm (1) is located on one side of the base (5); The clamping mechanism (6) is fixedly installed at one end of the three-axis robotic arm (1); The clamping mechanism (6) includes: A bidirectional electric guide rail (601) is fixedly installed at one end of a three-axis robotic arm (1), and a positioning mechanism (2) is symmetrically and movably connected to the bidirectional electric guide rail (601) via a slider three (602). Two mounting brackets (605) are movably connected to the bidirectional electric guide rail (601) via positioning mechanisms (2); Two sets of cams (603), each set of cams (603) includes two cams (603), and each set of cams (603) is rotatably connected to two mounting brackets (605), and the two cams (603) in each set are arranged in an upper and lower structure respectively; Multiple motors (604) are used to drive each cam (603) to rotate; Two sets of clamping plates (7), each set of clamping plates (7) includes two clamping plates (7), and each set of clamping plates (7) is arranged in an upper and lower structure; Multiple springs (607) are fixedly connected between the clamp (7) and the corresponding mounting bracket (605).

2. The multi-angle inspection fixture for complex automotive interior parts according to claim 1, characterized in that, The clamping mechanism (6) further includes: Multiple limiting rods (606) are fixedly connected to one side of the outer wall of each clamp (7), and the multiple limiting rods (606) are movably inserted into the inner wall of the mounting bracket (605); Multiple rotating shafts (608) are fixedly connected to the inner walls of multiple cams (603), and the cams (603) are rotatably connected to the mounting bracket (605) through the rotating shafts (608). The output ends of multiple motors (604) are connected to the multiple rotating shafts (608).

3. The multi-angle inspection fixture for complex automotive interior parts according to claim 1, characterized in that, The positioning mechanism (2) includes: Two side plates (205) are fixedly connected to two sliders (602) respectively; Two longitudinal electric slide rails (201) are fixedly connected to the inner walls of opposite sides of the two side plates (205).

4. The multi-angle inspection fixture for complex automotive interior parts according to claim 3, characterized in that, The positioning mechanism (2) also includes: Slider 1 (202) is movably connected to the longitudinal electric slide rail (201); The mounting groove (206) is located on the inner wall of one side of the slider (202).

5. A multi-angle inspection fixture for complex automotive interior parts according to claim 4, characterized in that, The positioning mechanism (2) also includes: Visual camera 2 (203) is fixedly installed in the mounting slot (206); Two sliders (204) are movably connected to two longitudinal electric slide rails (201), and each mounting bracket (605) is fixedly connected to one side of the outer wall of slider (204). Slider (204) and the clamp (7) below are at the same setting height.

6. A multi-angle inspection fixture for complex automotive interior parts according to claim 2, characterized in that, Each of the aforementioned clamps (7) includes: The base plate (701) is fixedly connected to the limiting rod (606); The airbag (702) is fixedly attached to one side of the outer wall of the base plate (701), and the airbag (702) is connected to an external air supply device through an inflation tube (707).

7. A multi-angle inspection fixture for complex automotive interior parts according to claim 6, characterized in that, Each of the clamps (7) also includes: Multiple pressure-sensing pads (703) are fixedly distributed on one side of the outer wall of the airbag (702); The connecting line 1 (706) is electrically connected to multiple pressure sensing elements (703) and connected to an external pressure sensor.

8. A multi-angle inspection fixture for complex automotive interior parts according to claim 7, characterized in that, Each of the clamps (7) also includes: A shape memory alloy mesh (704) is fixedly attached to one side of the outer wall of the airbag (702), and multiple pressure sensing pads (703) are located between the shape memory alloy mesh (704) and the airbag (702); Thermal insulating silicone (705) is fixedly attached to one side of the outer wall of the shape memory alloy mesh (704).

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