Vision-based appearance detection assembly and method for mold production

Abstract

The invention relates to the technical field of mold production, and discloses a vision-based appearance detection assembly for mold production, which comprises a main body box, the main body box is a rectangular box body without a front side wall, hinges are symmetrically arranged on the upper wall of the front end of the main body box, and a first detection structure is arranged in the middle of the upper wall in the main body box. The device has the advantages that the double detection structures are linked, the diameter and the thickness of the brake disc mold are judged, hole sites are formed in the brake disc at equal intervals, a dynamic projection overlapping method is used for testing in the rotation process of the mold, and the detection accuracy is improved. According to the invention, defects of circumferential distribution can be quickly positioned, compared with traditional static detection, the efficiency is improved, the distance between a light source and a detected part is utilized, the size of projection is adjusted, the device further conforms to molds with different sizes, the molds can be driven to rotate, 360-degree full-circumferential appearance detection is realized, and the device can be adapted to various brake disc molds such as disc type and drum type brake disc molds.

Description

Technical Field

[0001] The present invention relates to the technical field of mold production, and in particular to a vision-based appearance detection component and method for mold production. Background Art

[0002] In the field of mold production, appearance inspection is a key link in ensuring product quality. For example, in the field of automobile manufacturing, brake discs are manufactured by casting molds. However, different brake discs have different mold sizes, mounting shaft holes, bolt hole diameters, and evenly spaced heat dissipation holes. Traditional mold appearance inspection methods have the following significant drawbacks: Inadequate inspection accuracy. Relying on manual visual inspection or simple mechanical measurement, it is difficult to accurately determine subtle dimensional deviations in molds, such as hole diameter, wall thickness, and contour. This is especially true for complex curved molds, such as brake discs, where quantitative analysis of hole projection overlap is impossible. Poor clamping stability: Traditional clamping structures mostly use a fixed slot design, which cannot adapt to the centering fixation of molds of different specifications. It is also difficult to drive the mold to rotate for comprehensive inspection, resulting in a limited inspection range and an inability to cover all circumferential appearance defects. Summary of the Invention

[0003] The object of the present invention is to provide a vision-based appearance inspection component and method for mold production to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a vision-based appearance inspection component for mold production, comprising a main body box, wherein the main body box is a rectangular box without a front side wall, the front upper wall of the main body box is symmetrically provided with hinges, a first detection structure is provided in the middle of the inner upper wall of the main body box, a second detection structure is provided on the front side of the main body box, and the second detection structure is connected to the main body box through the hinge, a first clamping structure is provided on the inner lower wall of the main body box, and a second clamping structure corresponding to the first clamping structure is provided on the inner upper wall of the main body box; wherein the main body box and the second detection structure form a closed box to form an environment without external light influence, a qualified brake disc sample or sample mold is fixed by the first clamping structure, and the brake disc mold to be tested is fixed by the second clamping structure, so that the tested mold and the sample mold are located correspondingly above and below, downward lighting and projection detection are performed by the first detection structure, and backward lighting and irradiation detection are performed by the second detection structure.

[0005] Preferably, the first detection structure includes a first hydraulic cylinder, a machine disk, a first motor, a first electric slide rail and a first illumination lamp; the first hydraulic cylinder is fixedly arranged on the upper inner wall of the main body box and close to the middle, the machine disk is fixedly arranged on the telescopic end of the first hydraulic cylinder, and the machine disk is located below the middle of the upper inner wall of the main body box, the first motor is fixedly arranged on the upper wall of the machine disk and the first motor driving end moves through the machine disk, one end of the first electric slide rail is fixedly arranged on the first motor driving end, and the first electric slide rail is located below the machine disk, the first illumination lamp is fixedly arranged on the first electric slide rail, and the first illumination lamp moves left and right through the first electric slide rail.

[0006] Preferably, the second detection structure includes a cover, a display screen, a controller, a handle, a second electric slide rail, a base, a second illumination lamp and a first camera; the cover is fixedly arranged on a pair of hinges, and the cover can be buckled on the front side of the main box, the display screen is fixedly embedded in the left end of the cover, the controller is fixedly arranged on the right side of the display screen, the handle is fixedly arranged in the middle of the bottom end of the cover, the second electric slide rail is fixedly arranged in the middle of the rear side wall of the cover, and the second electric slide rail can be embedded in the main box, the base is fixedly arranged on the second electric slide rail, and the base can be raised and lowered, the second illumination lamp is fixedly arranged at the bottom end of the base, and the first camera is fixedly arranged on the base and is located above the second illumination lamp.

[0007] Preferably, the first clamping structure includes a first clamping assembly, a pair of brackets and a pair of second cameras; the first clamping assembly is fixedly arranged in the middle of the lower wall of the main box, the pair of brackets are symmetrically arranged on the first clamping assembly, and the pair of second cameras are fixedly arranged on the opposite side walls at the other end of the brackets, and the second cameras are irradiated toward the middle of the lower wall of the main box.

[0008] Preferably, the first clamping assembly includes a width-adjusting slide rail, a pair of distance-adjusting slide rails, a pair of clamping arms, a plurality of second motors and a plurality of clamping rollers; the width-adjusting slide rail is fixedly arranged on the lower wall of the main box and close to the rear end, the width-adjusting slide rail is symmetrically provided with a first movable seat that can move relatively, a pair of the distance-adjusting slide rails are symmetrically arranged on the first movable seat of the width-adjusting slide rail, and the distance-adjusting slide rail can move relatively, a pair of the distance-adjusting slide rails are symmetrically arranged on the left and right sides of the machine disk, a pair of the distance-adjusting slide rails are symmetrically provided with a second movable seat that can move relatively, one end of a pair of clamping arms are respectively arranged on the second movable seat of the distance-adjusting slide rail, and the other ends of the clamping arms are respectively opposite, the clamping arms can move relatively, and the other end of the clamping arm is L-shaped, a plurality of second motors are respectively fixedly arranged on the lower wall of the other end of the clamping arm, and are symmetrical to each other, a plurality of clamping rollers are respectively movably embedded in the other end of the clamping arm, and the clamping rollers are connected to the driving end of the second motor.

[0009] Preferably, the second clamping structure includes a pair of second hydraulic cylinders, a pair of adapter arms and a second clamping assembly; one end of the pair of second hydraulic cylinders are symmetrically arranged on the upper wall of the main box and located on the rear side of the first hydraulic cylinder, and one end of the pair of adapter arms are fixedly arranged on the telescopic end of the second hydraulic cylinder. The second clamping assembly has the same structure as the first clamping assembly, and the second clamping assembly is fixedly arranged between the other ends of the pair of adapter arms. The second clamping assembly is located above the first clamping assembly and is symmetrical with each other. The second clamping assembly is located below the first illumination lamp.

[0010] Preferably, in order to stably clamp the template or the mold to be tested and to drive it to rotate for detection, two second motors and two clamping rollers are symmetrically provided at the other end of the clamping arm.

[0011] Preferably, the second irradiation lamp is used to detect the outer diameter and thickness of the brake disc mold.

[0012] A vision-based appearance inspection method for mold production includes the following steps: Step 1: Open the main box by flipping the cover with the handle; Step 2: Place the actual sample or corresponding mold of the correct specifications on the first clamping structure for centering and fixing; Step 3: Place the brake disc mold to be tested on the second clamping structure and clamp it in the center; Step 4: According to the diameter of the brake disc mold to be tested, the first electric slide rail in the first detection structure is driven to adjust the position of the first irradiation lamp, and the first motor is used to drive the rotation to achieve omnidirectional irradiation; Step 5: Use the first irradiation lamp to illuminate the brake disc mold under test downwards, so that the appearance of the brake disc mold and the corresponding installation holes and heat dissipation holes can be projected onto the actual sample, and the second camera is used to perform imaging judgment; Step 6, i.e., in step 5, the hole positions are projected with light, and the rotation of the clamping roller can be used to adjust the tested sample or the qualified sample to cause the corresponding hole positions to overlap. When the hole positions overlap, if there is a difference in the hole diameter, the projection will appear staggered, and then the image can be used to determine whether the product mold is qualified; Step 7: Using the same principle as in step 6, project the tested mold onto the rear wall of the main box with the help of the second lamp in the second detection structure. Since the brake disc is a disc or a convex disc, a rectangular shadow or a convex shadow will be formed on the rear wall of the main box after projection from the front to the rear. The size can then be directly determined by imaging. Alternatively, a projection template of the corresponding size can be fixed on the rear wall of the main box for comparison testing.

[0013] The present invention proposes a vision-based appearance inspection component and method for mold production. Compared with traditional manual or contact-based appearance and aperture measurement, the present invention has the following advantages: 1. Dual detection structure linkage: The first detection structure projects downwards through the first irradiation lamp, projecting features such as the mounting holes and heat dissipation holes of the tested mold onto a qualified sample, and uses the second camera to capture the interlaced projections. The second detection structure projects backwards through the second irradiation lamp, forming a mold outline shadow on the rear wall of the main box to determine the diameter and thickness of the brake disc mold. By using the equidistant holes set on the brake disc, the dynamic projection overlap method is used for testing while the mold rotates, which can quickly locate circumferentially distributed defects, improving efficiency compared to traditional static inspection. 2. Closed light environment design completely eliminates external light interference: The main box and cover are closed: The cover of the second detection structure is buckled with the main box through hinges to form a fully enclosed detection space, ensuring stable camera imaging clarity and avoiding misjudgment due to changes in ambient light. The first irradiation lamp cooperates with the electric slide rail to adjust the irradiation angle and position, so that the projection edge sharpness is improved and feature recognition is more accurate. The distance between the light source and the measured part is used to adjust the size of the projection, further matching molds of different sizes.

[0014] 3. Adaptive clamping and rotation inspection, covering the full circumferential appearance: Dual-axis width and distance adjustable clamping, the first clamping component drives the clamping arm to move through the width and distance adjustable slides, which can adaptively clamp the brake disc mold with different diameters; the clamping roller at the end of the clamping arm is driven by the second motor, which can drive the mold to rotate, realizing 360-degree full circumferential appearance inspection.

[0015] 4. Strong applicability: The upper and lower symmetrical first clamping structure and second clamping structure ensure that the mold to be tested and the sample mold are on the same optical axis, with a unified projection comparison benchmark. Moreover, projection detection and comparison can be performed by simply placing the sample and the mold to be tested separately. The display screen and controller on the cover integrate the detection process control and imaging analysis system, supporting one-button start of detection, defect marking and data storage, reducing manual operation errors. The clamping arm, width adjustment slide and other components of the modular clamping assembly adopt a standardized interface design, which can be adapted to a variety of brake disc molds such as disc and drum types. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the assembly structure of the present invention; Figure 2 This is a schematic diagram of the appearance structure of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the first detection structure of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the second detection structure of the present invention; Figure 5This is a schematic diagram of the assembly structure of the first clamping structure of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the second clamping structure of the present invention; Figure 7 The diagram shows the relative positions of the first detection structure, the first clamping structure and the second clamping structure.

[0017] Figure 8 A schematic diagram of the enlarged structure of the clamping roller of the present invention.

[0018] In the figure: 1. main box, 2. folding sheet, 3. first detection structure, 31. first hydraulic cylinder, 32. machine plate, 33. first motor, 34. first electric slide, 35. first illumination lamp, 4. second detection structure, 41. cover plate, 42. display screen, 43. controller, 44. handle, 45. second electric slide, 46. base, 47. second illumination lamp, 48. first camera, 5. first clamping structure, 51. first clamping assembly, 511. width-adjusting slide, 512. distance-adjusting slide, 513. clamping arm, 514. second motor, 515. clamping roller, 52. bracket, 53. second camera, 6. second clamping structure, 61. second hydraulic cylinder, 62. transfer arm, 63. second clamping assembly, 7. sample mold. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1-8 The present invention provides a technical solution: a vision-based appearance inspection component for mold production, comprising a main body box 1, which is a rectangular box without a front side wall, and a hinge 2 is symmetrically provided on the upper wall of the front end of the main body box 1, a first detection structure 3 is provided in the middle of the upper wall inside the main body box 1, a second detection structure 4 is provided on the front side of the main body box 1, and the second detection structure 4 is connected to the main body box 1 through the hinge 2, a first clamping structure 5 is provided on the lower wall inside the main body box 1, and a second clamping structure 6 corresponding to the first clamping structure 5 is provided on the upper wall inside the main body box 1; wherein the main body box 1 and the second detection structure 4 form a closed box to form an environment without external light influence, a qualified brake disc sample or sample mold 7 is fixed by the first clamping structure 5, and a brake disc mold to be tested is fixed by the second clamping structure 6, so that the mold to be tested and the sample mold 7 are located correspondingly above and below, the first detection structure 3 is used to illuminate downward for projection detection, and the second detection structure 4 is used to illuminate backward for detection.

[0021] As a preferred solution, further, the first detection structure 3 includes a first hydraulic cylinder 31, a machine disk 32, a first motor 33, a first electric slide 34 and a first irradiation lamp 35; the first hydraulic cylinder 31 is fixedly arranged on the upper wall of the main box 1 and close to the middle, the machine disk 32 is fixedly arranged on the telescopic end of the first hydraulic cylinder 31, and the machine disk 32 is located below the middle of the upper wall of the main box 1, the first motor 33 is fixedly arranged on the upper wall of the machine disk 32 and the driving end of the first motor 33 moves through the machine disk 32, one end of the first electric slide 34 is fixedly arranged on the driving end of the first motor 33, and the first electric slide 34 is located below the machine disk 32, the first irradiation lamp 35 is fixedly arranged on the first electric slide 34, and the first irradiation lamp 35 moves left and right through the first electric slide 34; the first hydraulic cylinder 31 drives the machine disk 32 to rise and fall to adjust the height of the first irradiation lamp 35 relative to the mold to be tested, and the position of the first irradiation lamp 35 is adjusted by the electric slide to achieve full irradiation projection test of the mold.

[0022] More specifically, after the first hydraulic cylinder 31 is started, it drives the machine plate 32 to move up and down through the telescopic action, adjusting the vertical distance between the first irradiation lamp 35 and the mold to be tested; the first electric slide 34 drives the first irradiation lamp 35 to move laterally, adjusting the range of irradiation and position, and can cover the projection detection of the edge area of ​​the mold; the first motor 33 drives the first electric slide 34 to rotate, driving the first irradiation lamp 35 to make a 360-degree circular motion with the center of the machine plate 32 as the axis, and cooperates with the lateral movement of the electric slide to form a "rotation plus translation" composite motion trajectory, thereby realizing all-round irradiation of the mold surface.

[0023] As a preferred solution, further, the second detection structure 4 includes a cover 41, a display screen 42, a controller 43, a handle 44, a second electric slide 45, a base 46, a second illumination lamp 47 and a first camera 48; the cover 41 is fixedly arranged on a pair of hinges 2, and the cover 41 can be buckled on the front side of the main box 1, the display screen 42 is fixedly embedded in the left end of the cover 41, the controller 43 is fixedly arranged on the right side of the display screen 42, the handle 44 is fixedly arranged in the middle of the bottom end of the cover 41, the second electric slide 45 is fixedly arranged in the middle of the rear side wall of the cover 41, and the second electric slide 45 can be embedded in the main box Inside the body box 1, the base 46 is fixedly arranged on the second electric slide rail 45, and the base 46 can be raised and lowered. The second illumination lamp 47 is fixedly arranged at the bottom of the base 46, and the first camera 48 is fixedly arranged on the base 46 and is located above the second illumination lamp 47. The device is driven by the controller 43, and displayed through the display screen 42. The main body box 1 can be opened by flipping the cover 41 with the help of the handle 44 through the hinge 2. The height of the second illumination lamp 47 is adjusted by the second electric slide rail 45, so that the second illumination lamp 47 is caused to illuminate and project correspondingly to the fixed mold to be tested, and the imaging test is performed through the first camera 48.

[0024] More specifically, pull the handle 44 to flip the cover 41 so that it is buckled on the front side of the main box 1, and form a closed box through the limiting structure of the hinge 2 to isolate external light; input the parameters of the mold to be tested on the controller 43, drive the second electric slide 45 to move, drive the base 46 to rise and fall, adjust the height of the second irradiation lamp 47, so that the center of the light source is aligned with the central axis of the mold to be tested, and the display screen 42 displays the imaging results in real time.

[0025] As a preferred solution, further, the first clamping structure 5 includes a first clamping component 51, a pair of brackets 52 and a pair of second cameras 53; the first clamping component 51 is fixedly arranged in the middle of the lower wall of the main box 1, a pair of brackets 52 are symmetrically arranged on the first clamping component 51, and a pair of second cameras 53 are fixedly arranged on the opposite side walls at the other end of the brackets 52, and the second cameras 53 are irradiated toward the middle of the lower wall of the main box 1; the mold to be tested or the sample mold 7 is fixed by the first clamping component 51, and the second camera 53 is supported by the bracket 52, so that the second camera 53 is relatively converged to irradiate and image.

[0026] As a preferred solution, further, the first clamping assembly 51 includes a width-adjusting slide rail 511, a pair of distance-adjusting slide rails 512, a pair of clamping arms 513, a plurality of second motors 514 and a plurality of clamping rollers 515; the width-adjusting slide rail 511 is fixedly arranged on the lower wall of the main box 1 and close to the rear end, the width-adjusting slide rail 511 is symmetrically provided with a first movable seat that moves relatively, a pair of distance-adjusting slide rails 512 are symmetrically arranged on the first movable seat of the width-adjusting slide rail 511, and the distance-adjusting slide rails 512 can move relatively, a pair of distance-adjusting slide rails 512 are symmetrically arranged on the left and right sides of the machine disk 32, a pair of distance-adjusting slide rails 512 are symmetrically provided with a second movable seat that moves relatively, and one end of a pair of clamping arms 513 are respectively provided with a distance-adjusting The clamping arms 513 are mounted on the second movable seat of the slide rail 512, and the other ends of the clamping arms 513 are respectively opposite. The clamping arms 513 can move relatively, and the other ends of the clamping arms 513 are L-shaped. Several second motors 514 are respectively fixedly arranged on the lower wall of the other ends of the clamping arms 513, and are symmetrical with each other. Several clamping rollers 515 are respectively movably embedded in the other ends of the clamping arms 513, and the clamping rollers 515 are connected to the driving ends of the second motors 514. The lateral relative distance of the clamping arms 513 is adjusted by adjusting the width of the slide rail 511, and the distance relative to the clamping arms 513 is adjusted by adjusting the distance of the slide rail 512. The mold is supported and clamped by the other end of the clamping arms 513, and the mold is pressed against the mold by the clamping rollers 515. After clamping, the mold can be driven to rotate with the help of the second motor 514.

[0027] More specifically, the width-adjusting slide rail 511 is a linear slide rail, which is fixed to the lower wall of the main box 1 near the rear end by bolts. Two first movable seats are symmetrically arranged on the width-adjusting slide rail 511, which are connected to the slide rail through a slider and can move toward or away from each other along the slide rail. A pair of distance-adjusting slide rails 512 are respectively fixed on the two first movable seats of the width-adjusting slide rail 511, and two second movable seats are symmetrically arranged on each distance-adjusting slide rail 512, which are connected to the slide rail through a slider and can move toward or away from each other along the slide rail, thereby driving the clamping arm 513 to move for adjustment and clamping.

[0028] As a preferred solution, further, the second clamping structure 6 includes a pair of second hydraulic cylinders 61, a pair of adapter arms 62 and a second clamping assembly 63; one end of the pair of second hydraulic cylinders 61 are symmetrically arranged on the upper wall of the main box 1 and located on the rear side of the first hydraulic cylinder 31, and one end of the pair of adapter arms 62 are fixedly arranged on the telescopic end of the second hydraulic cylinder 61. The second clamping assembly 63 has the same structure as the first clamping assembly 51. The second clamping assembly 63 is fixedly arranged between the other ends of the pair of adapter arms 62. The second clamping assembly 63 is located above the first clamping assembly 51 and is symmetrical with each other. The second clamping assembly 63 is located below the first irradiation lamp 35; the second hydraulic cylinder 61 drives the adapter arm 62 to rise and fall to drive the second clamping assembly 63 to rise and fall, so as to realize the height of the measured mold fixed in the second clamping assembly 63, which is adjusted according to different sizes and apertures to achieve better utilization of light source illumination and imaging.

[0029] As a preferred solution, further, in order to stably clamp the template or the mold to be tested and to drive it for rotation detection, two second motors 514 and two clamping rollers 515 are symmetrically provided at the other end of the clamping arm 513.

[0030] As a preferred solution, further, the second illumination lamp 47 is used to detect the outer diameter and thickness of the brake disc mold.

[0031] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0032] Step 1: Place the device horizontally in the main box 1. After powering on the device, flip the cover 41 in the second detection structure 4 by lifting the handle, so that the cover 41 flips open the main box 1 with the help of the hinge 2. Step 2: Place the actual sample mold 7 of the correct specifications on the first clamping structure 5 for centering and fixing, and place the test sample on the second clamping structure 6 for fixing. That is, the actual sample is fixed by the first clamping assembly 51, and the test sample is fixed by the second clamping assembly 63. When placing the sample, the width adjustment rail 511 can be driven to adjust the left and right spacing of the clamping according to the size of the sample. The front and rear spacing of the clamping arms 513 can be adjusted by the distance adjustment rail 512. Then the disc-shaped mold is placed between the other ends of the clamping arms 513 and clamped and limited by the clamping roller 515. If the mold is convex, the smaller diameter end is placed upwards. Step 3: According to the diameter of the brake disc mold to be tested, the first electric slide 34 in the first detection structure 3 is driven to adjust the position of the first irradiation lamp 35, and the first motor 33 on the machine plate 32 is driven to drive the first driving slide to rotate, so that the first irradiation lamp 35 rotates along the central axis of the machine plate 32, so that molds with different diameters can be fully irradiated, that is, the entire aperture is illuminated. Alternatively, when the first irradiation lamp 35 is stationary, the second motor 514 is started to drive the clamping roller 515 to rotate, and the clamping roller 515 drives the mold to rotate to achieve the hole position replacement test; Step 4: Use the first irradiation lamp 35 to illuminate the brake disc mold under test downwards. The appearance of the brake disc mold and the corresponding installation holes and heat dissipation holes can be projected onto the actual sample. The second camera 53 on the bracket 52 is used to perform imaging judgment and the image is projected on the display screen 42 for display. The height of the first irradiation lamp 35 can also be adjusted by driving the first hydraulic cylinder 31 through the controller 43. The height change of the first irradiation lamp 35 relative to the mold can change the size of the image after the light passes through the aperture. The same mold can be used to test molds with larger apertures. The same principle is used, that is, the height of the second clamping assembly 63 on the adapter arm 62 is adjusted by using the second hydraulic cylinder 61, that is, the height of the mold under test is adjusted by the second hydraulic cylinder 61. Step 5, i.e., in step 4, the hole positions are projected with light, and the rotation of the clamping roller 515 is used to adjust the tested sample or the qualified sample so that the corresponding hole positions overlap. When the hole positions overlap, if there is a difference in hole diameter, the projections will appear staggered, and then the image can be used to determine whether the product mold is qualified; Step six, with the same principle as in step five, with the help of the second irradiation lamp 47 in the second detection structure 4, the mold to be tested is projected on the inner rear wall of the main box 1. Since the brake disc is a disc or a convex disc, after irradiation and projection from the front to the rear, a rectangular shadow or a convex shadow will be formed on the inner rear wall of the main box 1. Then the size can be directly determined by imaging. For molds of different thicknesses, the height position of the second irradiation lamp 47 on the base 46 can be adjusted with the help of the second electric slide 45, so that the second irradiation lamp 47 can be tested at the same horizontal plane as the object to be tested. The projection template of the corresponding size can also be fixed on the inner rear wall of the main box 1 for comparison testing.

[0033] In summary, the design of this technical solution is also applicable to the detection of other parts, as shown below: Compatibility with multiple types of parts, with an improved adaptability range: Through the combined adjustment of the width-adjusting slide rail 511 and the distance-adjusting slide rail 512, the clamping arm 513 can adapt to the measurement of circular parts such as bearings and rings with different diameters, as well as rod-type parts with different cross-sectional diameters; the inner diameter, outer diameter and other data of the ring can be detected through imaging.

[0034] Highly adaptive detection: The first hydraulic cylinder 31 and the second electric slide 45 can adjust the vertical distance between the first and second irradiation lamps 47 respectively to adapt to the detection requirements of parts with different thicknesses.

[0035] Non-contact measurement avoids part damage: Using downward projection from the first illumination lamp 35 or backward projection from the second illumination lamp 47, diameter, aperture, and contour measurements can be performed without physical contact with the part surface. This eliminates the plating scratches often associated with traditional caliper measurement on bearings and rods with precision coatings, making it particularly suitable for high-precision aerospace parts.

[0036] Multi-parameter simultaneous detection improves efficiency: For complex parts such as bearings, the first detection structure 3 can be activated to project the hole position and the second detection structure 4 can be activated to project the outer diameter at the same time, completing the detection of multiple parameters such as the inner diameter, outer diameter, and hole position offset in one imaging.

[0037] Dynamic rotation detection: When the clamping roller 515 drives the part to rotate, the first camera 48 and the second camera 53 capture 360-degree projection images in real time, automatically identifying circumferentially distributed defects (such as the spiral pattern of the rod and the eccentricity of the ring), saving work hours compared to traditional static detection.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A vision-based appearance inspection component for mold production, characterized in that: The invention comprises a main body box (1), wherein the main body box (1) is a rectangular box body without a front side wall, a hinge (2) is symmetrically provided on the front upper wall of the main body box (1), a first detection structure (3) is provided in the middle of the inner upper wall of the main body box (1), a second detection structure (4) is provided on the front side of the main body box (1), and the second detection structure (4) is connected to the main body box (1) through the hinge (2), a first clamping structure (5) is provided on the inner lower wall of the main body box (1), and a second clamping structure (6) corresponding to the first clamping structure (5) is provided on the inner upper wall of the main body box (1); The main body box (1) and the second detection structure (4) form a closed box, forming an environment without external light influence. The qualified brake disc sample or sample mold (7) is fixed by the first clamping structure (5), and the brake disc mold to be tested is fixed by the second clamping structure (6), so that the tested mold and the sample mold (7) are located in correspondence with each other. The first detection structure (3) is used to illuminate downwards for projection detection, and the second detection structure (4) is used to illuminate backwards for illumination detection.

2. The visual-based appearance inspection component for mold production according to claim 1, characterized in that: The first detection structure (3) comprises a first hydraulic cylinder (31), a machine plate (32), a first motor (33), a first electric slide rail (34), and a first irradiation lamp (35); The first hydraulic cylinder (31) is fixedly arranged on the inner upper wall of the main body box (1) and close to the middle part; the machine disk (32) is fixedly arranged on the telescopic end of the first hydraulic cylinder (31), and the machine disk (32) is located below the middle part of the inner upper wall of the main body box (1); the first motor (33) is fixedly arranged on the upper wall of the machine disk (32), and the driving end of the first motor (33) moves through the machine disk (32); one end of the first electric slide rail (34) is fixedly arranged on the driving end of the first motor (33), and the first electric slide rail (34) is located below the machine disk (32); the first irradiation lamp (35) is fixedly arranged on the first electric slide rail (34), and the first irradiation lamp (35) moves left and right through the first electric slide rail (34).

3. The visual-based appearance inspection component for mold production according to claim 2, characterized in that: The second detection structure (4) includes a cover plate (41), a display screen (42), a controller (43), a handle (44), a second electric slide rail (45), a base (46), a second illumination lamp (47) and a first camera (48); The cover plate (41) is fixedly arranged on a pair of folding leaves (2), and the cover plate (41) can be buckled on the front side of the main box (1), the display screen (42) is fixedly embedded in the left end of the cover plate (41), the controller (43) is fixedly arranged on the right side of the display screen (42), the handle (44) is fixedly arranged in the middle of the bottom end of the cover plate (41), the second electric slide rail (45) is fixedly arranged in the middle of the rear side wall of the cover plate (41), and the second electric slide rail (45) can be embedded in the main box (1), the base (46) is fixedly arranged on the second electric slide rail (45), and the base (46) can be raised and lowered, the second illumination lamp (47) is fixedly arranged at the bottom end of the base (46), and the first camera (48) is fixedly arranged on the base (46) and is located above the second illumination lamp (47).

4. The visual-based appearance inspection component for mold production according to claim 3, characterized in that: The first clamping structure (5) comprises a first clamping assembly (51), a pair of brackets (52), and a pair of second cameras (53); The first clamping assembly (51) is fixedly arranged at the middle of the lower wall of the main box (1), a pair of brackets (52) are symmetrically arranged on the first clamping assembly (51), and a pair of second cameras (53) are fixedly arranged on opposite side walls at the other end of the brackets (52), and the second cameras (53) illuminate the middle of the lower wall of the main box (1).

5. The visual-based appearance inspection component for mold production according to claim 4, characterized in that: The first clamping assembly (51) comprises a width-adjusting slide rail (511), a pair of distance-adjusting slide rails (512), a pair of clamping arms (513), a plurality of second motors (514), and a plurality of clamping rollers (515); The width-adjusting slide rail (511) is fixedly arranged on the lower wall of the main body box (1) and close to the rear end. A first movable seat that can move relatively is symmetrically arranged on the width-adjusting slide rail (511). A pair of the distance-adjusting slide rails (512) are symmetrically arranged on the first movable seat of the width-adjusting slide rail (511), and the distance-adjusting slide rails (512) can move relatively. The pair of the distance-adjusting slide rails (512) are symmetrically arranged on the left and right sides of the machine disk (32). A second movable seat that can move relatively is symmetrically arranged on the pair of the distance-adjusting slide rails (512). One end of the clamping arm (513) is respectively arranged on the second movable seat of the distance adjustment slide rail (512), and the other end of the clamping arm (513) is respectively opposite, the clamping arm (513) can move relatively, and the other end of the clamping arm (513) is L-shaped, a plurality of the second motors (514) are respectively fixedly arranged on the lower wall of the other end of the clamping arm (513) and are symmetrical to each other, a plurality of the clamping rollers (515) are respectively movably embedded in the other end of the clamping arm (513), and the clamping rollers (515) are connected to the driving end of the second motor (514).

6. The visual-based appearance inspection component for mold production according to claim 5, characterized in that: The second clamping structure (6) comprises a pair of second hydraulic cylinders (61), a pair of transfer arms (62) and a second clamping assembly (63); One end of a pair of second hydraulic cylinders (61) is symmetrically arranged on the inner upper wall of the main body box (1) and is located at the rear side of the first hydraulic cylinder (31). One end of a pair of transfer arms (62) is fixedly arranged on the telescopic end of the second hydraulic cylinder (61). The second clamping assembly (63) has the same structure as the first clamping assembly (51). The second clamping assembly (63) is fixedly arranged between the other ends of the pair of transfer arms (62). The second clamping assembly (63) is located above the first clamping assembly (51) and is symmetrical to each other. The second clamping assembly (63) is located below the first irradiation lamp (35).

7. The visual-based appearance inspection component for mold production according to claim 6, characterized in that: Two second motors (514) and two clamping rollers (515) are symmetrically arranged at the other end of the clamping arm (513).

8. The visual-based appearance inspection component for mold production according to claim 7, characterized in that: The second irradiation lamp (47) is used to detect the outer diameter and thickness of the brake disc mold.

9. A method for visual inspection of mold production, which is applied to the visual inspection component for mold production as claimed in claim 8, characterized in that: The following steps are involved: Step 1: Open the main box (1) by flipping the cover (41) by the handle; Step 2: Place the actual sample or corresponding mold of the correct specifications on the first clamping structure (5) for centering and clamping; Step 3: Place the brake disc mold to be tested on the second clamping structure (6) and clamp it in the center; Step 4: According to the diameter of the brake disc mold to be tested, the first electric slide rail (34) in the first detection structure (3) is driven to adjust the position of the first irradiation lamp (35), and the first motor (33) is used to drive the rotation to achieve all-round irradiation; Step 5: Using the first irradiation lamp (35) to illuminate the brake disc mold to be tested downward, the appearance of the brake disc mold and the corresponding installation hole positions and heat dissipation hole positions can be projected onto the actual sample, and imaging judgment is performed with the help of the second camera (53); Step 6, i.e., in step 5, by means of light projection, the tested sample or qualified sample can be adjusted by means of the rotation of the clamping roller (515) to cause the corresponding hole positions to overlap. When the hole positions overlap, if there is a difference in the hole diameter, the projection will be staggered, and then the image can be used to determine whether the product mold is qualified; Step 7. Using the same principle as in step 6, the second irradiation lamp (47) in the second detection structure (4) is used to illuminate backwards and project the mold to be tested onto the inner rear side wall of the main box (1). Since the brake disc is a disc or a convex disc, a rectangular shadow or a convex shadow will be formed on the inner rear side wall of the main box (1) after illumination and projection from the front to the rear. The size can then be directly determined by imaging. Alternatively, a projection template of the corresponding size can be fixed on the inner rear side wall of the main box (1) for comparison testing.

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