Continuous detection device for motor shaft production based on visual detection

Abstract

The invention discloses a continuous detection device for motor shaft production based on visual detection, and relates to the technical field of motor shaft detection. Comprising an installation frame, a chain plate conveying mechanism is installed on the installation frame, a plurality of carrying plates are installed on a chain plate of the chain plate conveying mechanism, positioning supports distributed at intervals are installed on the carrying plates, V-shaped positioning grooves used for containing motor shafts are formed in the positioning supports, and datum lines distributed at equal intervals are arranged in the V-shaped positioning grooves. By arranging the CCD shooting module, the positioning support and other structures, a motor shaft needing to be detected can be placed in a V-shaped positioning groove of the positioning support, the motor shaft is conveyed to the position under the CCD shooting module on the basis of conveying of the chain plate conveying mechanism, the CCD shooting module collects images, image information is transmitted to the image analysis module of the system for analysis, and the detection accuracy is improved. Due to the arrangement of the datum line, whether the motor shaft is bent or not can be judged by taking the datum line as the datum, so that defective products are screened out.

Description

Technical Field

[0001] The present invention relates to the technical field of motor shaft detection, and in particular to a continuous detection device for motor shaft production based on visual detection. Background Art

[0002] Ensuring product quality is crucial in the production of motor shafts. Traditional manual inspection methods are not only inefficient but also susceptible to human factors, making it difficult to guarantee the accuracy and consistency of test results. Currently, some equipment uses machine vision technology for inspection, but this requires manually securing the motor shaft in the inspection position and then manually removing it after inspection. While this method can meet certain inspection requirements, it is inefficient and not well suited to efficient, automated mass production.

[0003] After searching, the application proposal of Chinese patent application number CN202220303493.6 discloses a motor shaft detection and marking device based on machine vision technology, including a workbench and a marking machine installed on the workbench, a bracket is provided on the top of the workbench, a number of detection mechanisms are provided around the bracket, a motor shaft is installed on the top of the bracket, a fixed plate is provided on one side of the bracket, a rotating block is rotatably plugged into the fixed plate, a rotating device is provided inside the rotating block, and a return device is provided between the rotating block and the fixed plate. The motor shaft detection and marking equipment in the above-mentioned document has the following shortcomings: low detection efficiency, inconvenient loading and unloading, and cannot achieve efficient streamlined detection when dealing with large-scale product detection. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a continuous detection device for motor shaft production based on visual detection.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A continuous inspection device for motor shaft production based on visual inspection includes a mounting frame, a chain conveyor mechanism mounted on the mounting frame, a plurality of carrier plates mounted on the chain plates of the chain conveyor mechanism, and spaced positioning brackets mounted on the carrier plates. The positioning brackets are provided with V-shaped positioning grooves for accommodating the motor shafts, and equidistantly distributed reference lines are provided in the V-shaped positioning grooves. The plurality of positioning brackets are linearly distributed along the direction of the reference lines.

[0007] Two visual detection mechanisms are provided on the conveying path of the chain conveying mechanism, and a first guide assembly and a second guide assembly are sequentially provided on the movement path of the mounting wheel. The positions of the first guide assembly and the second guide assembly are adapted to the two visual detection mechanisms. The visual detection mechanism includes a support frame, on which a first electric telescopic cylinder is installed, and a mounting seat is installed at the output end of the first electric telescopic cylinder, and a CCD shooting module is installed on the mounting seat. The CCD shooting module is located directly above the movement path of the motor shaft and the positioning bracket.

[0008] As a preferred embodiment of the present invention: an auxiliary pressing structure is installed on the mounting seat, and the auxiliary pressing structure includes a pressing frame, which is an inverted "X" shaped structure with both ends bent upward. A sliding column is installed on the pressing frame, and the sliding column slides up and down on the inner wall of the mounting seat. The sliding column and the mounting seat are connected by a second spring, and the pressing frame and the positioning bracket are arranged in an alternating manner.

[0009] As a preferred embodiment of the present invention: a support part is installed on the carrier plate, a cylindrical rod is rotatably installed on the support part, a pressure plate is installed at one end of the cylindrical rod, an annular cavity is provided on the side of the pressure plate close to the support part, an annular frame is rotatably installed in the annular cavity, and the annular frame and the support part are connected by a first spring; a mounting wheel is installed at the other end of the cylindrical rod; the centers of the mounting wheel, the pressure plate and the cylindrical rod are on the same straight line.

[0010] As a preferred embodiment of the present invention, the first guide assembly and the second guide assembly have the same structure and both include:

[0011] Mounting plate, the mounting plate is installed on the side of the mounting frame;

[0012] The transverse slide is installed on the mounting plate. Two first guide rods and two second guide rods are installed on the transverse slide. The first guide rods are in a cross-shaped structure with the middle away from the CCD shooting module. The distance between the two first guide rods is greater than the diameter of the cylindrical rod but smaller than the diameter of the mounting wheel; the two sides of the mounting wheel are in an arc structure.

[0013] As a preferred embodiment of the present invention, the transverse slide is slidably connected to the inner wall of the mounting plate, and the mounting plate is threadedly connected with a fixing knob for fixing the transverse slide.

[0014] As a preferred embodiment of the present invention, a linkage plate is installed on the transverse slide of the second guide assembly, and the linkage plate is located on the movement path of the mounting wheel.

[0015] As a preferred embodiment of the present invention: the support part includes a first stand and a second stand, the first stand is fixed on the carrier plate, and the second stand is connected to the inner wall of the end of the first stand for sliding up and down; the inner wall of one side of the first stand is threadedly connected to a threaded part for fixing the second stand.

[0016] As a preferred embodiment of the present invention: a third guide assembly and a fourth guide assembly are installed on the mounting frame, the third guide assembly is located as a whole below the chain conveyor mechanism, and the fourth guide assembly is located above the end of the chain conveyor mechanism; the structures of the third guide assembly and the fourth guide assembly are the same as those of the first guide assembly; a receiving box is provided below the third guide assembly.

[0017] As a preferred embodiment of the present invention: a good product conveying mechanism is provided below the mounting frame, and the good product conveying mechanism includes:

[0018] A fixed frame, on which a conveying roller is rotatably mounted, the conveying roller is provided with circumferentially distributed receiving grooves, the conveying roller is provided with a plurality of arc-shaped grooves, both ends of the arc-shaped grooves are connected to adjacent receiving grooves, and the depth of the receiving grooves is greater than the sum of the depth of the arc-shaped grooves and the diameter of the motor shaft;

[0019] The support rod is installed on the fixing frame, and a plurality of arc-shaped limit plates with arc-shaped grooves are installed on the support rod. The arc-shaped limit plates are located in the arc-shaped grooves, and the arc-shaped limit plates on both sides are symmetrically arranged, and the distance between the adjacent ends of the two arc-shaped limit plates is greater than the width of the receiving groove;

[0020] The guide parts are arranged on the outside of both ends of the conveying roller and are used to guide the cylindrical rods on both sides outward;

[0021] The driving motor is installed on the fixing frame, and the output end of the driving motor is connected to the shaft of the conveying roller.

[0022] As a preferred embodiment of the present invention, the guide portion includes:

[0023] The mounting plate is mounted on the shaft of the conveying roller in a transversely slidable manner, and the mounting plate and the conveying roller are connected via a third spring;

[0024] An arc-shaped wedge block is provided on the outer circumferential wall of the mounting plate, and the position of the arc-shaped wedge block corresponds to the accommodating groove one by one;

[0025] The limit plate is installed at the end of the conveying roller, and the limit plate and the arc wedge are staggered;

[0026] The second electric telescopic cylinder is installed on the fixing frame, and an arc-shaped push plate is installed at the output end of the second electric telescopic cylinder.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention can place the motor shaft to be inspected in the V-shaped positioning groove of the positioning bracket by setting up a CCD shooting module, a positioning bracket and other structures. Based on the transportation of the chain plate conveying mechanism, the motor shaft is transported to the bottom of the CCD shooting module. The CCD shooting module collects the image and transmits the image information to the image analysis module of the system for analysis. Since a baseline is set, it can be used as a reference to judge whether the motor shaft has abnormal conditions such as bending, thereby screening out defective products.

[0029] 2. The present invention provides a pressure frame and other structures, which can be used to press and fix the motor shaft when the first electric telescopic cylinder controls the mounting base to descend, thereby preventing structural shaking, thereby ensuring that the collected images are accurate and reliable, and facilitating subsequent analysis.

[0030] 3. The present invention provides a first guide rod and a second guide rod. When the carrier plate moves to the detection position, the first guide rod and the second guide rod can be used to guide the mounting wheel, so that the mounting wheel slides along the side of the first guide rod away from the carrier plate, and then the cylindrical rod slides to both sides, thereby eliminating the clamping fixation of the motor shaft and facilitating the acquisition of accurate images.

[0031] 4. The present invention sets a linkage plate, which can utilize the linkage plate to contact the top surface of the mounting wheel during the movement of the carrier plate. Based on the friction force, the cylindrical rod and the pressure plate are rotated, and then the motor shaft is driven to rotate, thereby realizing the flipping of the motor shaft at a certain angle, and utilizing the second visual detection mechanism to photograph the other side of the motor shaft; since the linkage plate is set at the front end of the horizontal slide, the angle of the motor shaft can be adjusted first, and then separated from the motor shaft, thereby ensuring the reliability during detection.

[0032] 5. The present invention provides an adjustable support portion, which makes it easy to adjust the effective length of the support portion when detecting motor shafts of different diameters, so that the center of the pressure plate is adapted to the center of the motor shaft end face, thereby facilitating the flipping of the motor shaft and improving reliability.

[0033] 6. The present invention sets up a good product conveying mechanism, which can guide the cylindrical rod based on the guide part, so that the motor shaft can be separated from the pressure plate and fall into the receiving groove based on its own weight. As the driving motor drives the conveying roller to rotate, the motor shaft is conveyed to the bottom. During the process, the arc-shaped limit plate plays a blocking and limiting effect to prevent the motor shaft from detaching from both sides. When the motor shaft is conveyed to the bottom, it loses the limitation of the arc-shaped limit plate and is able to fall from under the conveying roller. The conveying roller is used to realize the function of conveying good products.

[0034] 7. The present invention sets a guide part. After the system analyzes the good products and defective products, if the current product is good, the second electric telescopic cylinder controls the arc push plate to approach the fixed frame, and the mounting plate synchronously approaches the fixed frame based on the action force of the third spring, so that the arc wedge moves to the movement path of the mounting wheel. When the motor shaft passes by, based on the rotation of the conveyor roller, the arc wedge synchronously squeezes the mounting wheel, so that the motor shaft is released from the clamping of the pressure plate, and thus accurately falls into the receiving groove; if the product is defective, the second electric telescopic cylinder pushes the arc wedge toward the conveyor roller through the arc push plate, so that the corresponding mounting wheel passes over the conveyor roller, is guided to fall by the third guide assembly, and the defective products are collected by the receiving box. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0036] Figure 2 This is a schematic structural diagram of the bottom portion of a chain conveyor mechanism of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0037] Figure 3 This is a schematic structural diagram of a visual inspection mechanism of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0038] Figure 4 This is a schematic structural diagram of the cooperation between the mounting wheel, the first guide rod, and the second guide rod of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0039] Figure 5 This is a schematic structural diagram of a cross-section of a mounting base of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0040] Figure 6 This is a schematic structural diagram of a good product conveying mechanism of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention;

[0041] Figure 7 This is a structural schematic diagram of the conveyor roller and arc-shaped limit plate of the continuous inspection device for motor shaft production based on visual inspection proposed by the present invention in the disassembled state;

[0042] Figure 8 This is a schematic structural diagram of a cross-section of a conveyor roller of a continuous inspection device for motor shaft production based on visual inspection proposed by the present invention.

[0043] In the figure: 1-mounting frame; 2-first guide assembly; 3-second guide assembly; 4-third guide assembly; 5-receiving box; 6-good product conveyor line; 7-chain plate conveyor mechanism; 8-support frame; 9-first electric telescopic cylinder; 10-fourth guide assembly; 11-fixed frame; 12-second electric telescopic cylinder; 13-drive motor; 14-mounting plate; 15-transverse slide; 16-linkage plate; 17-second guide rod; 18-first guide rod; 19-mounting seat; 20-pressing plate; 21-mounting wheel; 2 2-Fixing knob; 23-Positioning bracket; 24-Carrier plate; 25-Motor shaft; 26-CCD camera module; 27-Sliding column; 28-Second spring; 29-First spring; 30-Annular frame; 31-First vertical frame; 32-Second vertical frame; 33-Pressure frame; 34-Base line; 35-Limiting plate; 36-Arc-shaped push plate; 37-Support rod; 38-Conveyor roller; 39-Accommodating groove; 40-Arc-shaped groove; 41-Arc-shaped wedge block; 42-Arc-shaped limiting plate; 43-Mounting plate; 44-Third spring. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0045] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0046] Example 1:

[0047] A continuous inspection device for motor shaft production based on visual inspection, such as Figure 1-8 As shown, it includes a mounting frame 1, on which a chain plate conveying mechanism 7 is mounted, and a plurality of carrier plates 24 are mounted on the chain plates of the chain plate conveying mechanism 7, and spaced positioning brackets 23 are mounted on the carrier plates 24, and the positioning brackets 23 are provided with V-shaped positioning grooves for placing the motor shaft 25, and the V-shaped positioning grooves are provided with equidistantly distributed reference lines 34, and the plurality of positioning brackets 23 are linearly distributed along the direction of the reference lines 34;

[0048] Two visual detection mechanisms are provided on the conveying path of the chain conveyor mechanism 7, and a first guide assembly 2 and a second guide assembly 3 are sequentially provided on the motion path of the mounting wheel 21. The positions of the first guide assembly 2 and the second guide assembly 3 are adapted to the two visual detection mechanisms. The visual detection mechanism includes a support frame 8, on which a first electric telescopic cylinder 9 is mounted, and a mounting seat 19 is mounted on the output end of the first electric telescopic cylinder 9. A CCD shooting module 26 is mounted on the mounting seat 19, and the CCD shooting module 26 is located directly above the motion path of the motor shaft 25 and the positioning bracket 23;

[0049] By providing the CCD camera module 26, the positioning bracket 23 and other structures, the motor shaft 25 to be inspected can be placed in the V-shaped positioning groove of the positioning bracket 23. Based on the conveyance of the chain plate conveyor mechanism 7, the motor shaft 25 is conveyed to the bottom of the CCD camera module 26. The CCD camera module 26 captures the image and transmits the image information to the image analysis module of the system for analysis. Since the reference line 34 is provided, it can be used as a reference to determine whether the motor shaft 25 has abnormal conditions such as bending, thereby screening out defective products.

[0050] The specific image analysis method can refer to the existing technology. For example, by processing the collected image, such as binarization, etc., image features are extracted, such as the edge features of the baseline 34 and the motor shaft 25, and then it is determined whether the two are parallel or whether the angle is within the set range. The judgment is made based on the analysis results, and the details are not repeated here.

[0051] In order to make more accurate judgments; Figure 5 As shown, the mounting seat 19 is equipped with an auxiliary pressing structure, which includes a pressing frame 33. The pressing frame 33 is an inverted "F"-shaped structure with both ends bent upward. The pressing frame 33 is equipped with a slide column 27, which slides up and down on the inner wall of the mounting seat 19. The slide column 27 and the mounting seat 19 are connected by a second spring 28. The pressing frame 33 and the positioning bracket 23 are staggered.

[0052] By providing structures such as the pressure frame 33, when the first electric telescopic cylinder 9 controls the mounting seat 19 to descend, the pressure frame 33 can be used to press and fix the motor shaft 25 to avoid structural shaking, thereby ensuring that the collected images are accurate and reliable, facilitating subsequent analysis.

[0053] In order to facilitate the fixing of the motor shaft 25 during the conveying process; Figure 1-5As shown, a support portion is mounted on the carrier plate 24, a cylindrical rod is rotatably mounted on the support portion, a pressure plate 20 is mounted on one end of the cylindrical rod, an annular cavity is provided on the side of the pressure plate 20 close to the support portion, an annular frame 30 is rotatably mounted in the annular cavity, and the annular frame 30 and the support portion are connected by a first spring 29; a mounting wheel 21 is mounted on the other end of the cylindrical rod; the centers of the mounting wheel 21, the pressure plate 20 and the cylindrical rod are on the same straight line;

[0054] By providing structures such as the pressing plate 20 and the mounting wheel 21 , the pressing plates 20 on both sides can be used to assist in clamping the motor shaft 25 when the motor shaft 25 is transported, thereby maintaining structural stability.

[0055] In order to avoid interference of the structure such as the pressure plate 20 during the test; Figure 5 As shown, the first guide assembly 2 and the second guide assembly 3 have the same structure, and both include:

[0056] Mounting plate 14, the mounting plate 14 is mounted on the side of the mounting frame 1;

[0057] The transverse slide 15 is mounted on the mounting plate 14. Two first guide rods 18 and two second guide rods 17 are mounted on each of the transverse slides 15. The first guide rods 18 are in a "F"-shaped structure with their middle portions away from the CCD camera module 26. The spacing between the two first guide rods 18 is greater than the diameter of the cylindrical rod but less than the diameter of the mounting wheel 21. Both sides of the mounting wheel 21 are in a curved structure.

[0058] By setting the first guide rod 18 and the second guide rod 17, the first guide rod 18 and the second guide rod 17 can be used to guide the mounting wheel 21 when the carrier plate 24 moves to the detection position, so that it slides along the side of the first guide rod 18 away from the carrier plate 24, and then slides the cylindrical rod to both sides, thereby canceling the clamping fixation of the motor shaft 25, making it easier to capture accurate images.

[0059] In order to facilitate adjustment of the position of the transverse carriage 15; Figure 4 As shown, the transverse slide 15 is slidably connected to the inner wall of the mounting plate 14 , and a fixing knob 22 for fixing the transverse slide 15 is threadedly connected to the mounting plate 14 .

[0060] In order to facilitate the use of two visual detection mechanisms to shoot different positions of the motor shaft 25; Figure 3 As shown, a linkage plate 16 is mounted on the transverse carriage 15 of the second guide assembly 3 , and the linkage plate 16 is located on the movement path of the mounting wheel 21 ;

[0061] By setting up the linkage plate 16, during the movement of the carrier plate 24, the linkage plate 16 can be used to contact the top surface of the mounting wheel 21. Based on the friction force, the cylindrical rod and the pressure plate 20 are rotated, and then the motor shaft 25 is driven to rotate, thereby realizing the flipping of the motor shaft 25 at a certain angle, and the second visual detection mechanism is used to photograph the other side of the motor shaft 25, thereby improving the reliability of the detection; since the linkage plate 16 is set at the front end of the horizontal slide 15, the angle of the motor shaft 25 can be adjusted first, and then separated from the motor shaft 25, thereby ensuring the reliability during detection.

[0062] In order to facilitate the adjustment of the height of the cylindrical rod; Figure 5 As shown, the support portion includes a first stand 31 and a second stand 32. The first stand 31 is fixed on the carrier plate 24, and the second stand 32 is slidably connected to the inner wall of the end of the first stand 31. A threaded member for fixing the second stand 32 is connected to the inner wall of one side of the first stand 31 through a threaded connection.

[0063] The threaded parts can adopt structures such as top screws and threaded knobs;

[0064] By setting up an adjustable support part, it is convenient to adjust the effective length of the support part when detecting motor shafts 25 of different diameters, so that the center of the pressure plate 20 is adapted to the center of the end face of the motor shaft 25, which facilitates flipping the motor shaft 25 and improves reliability.

[0065] In order to facilitate the loading and unloading of the motor shaft 25; Figure 1 As shown, the mounting frame 1 is mounted with a third guide assembly 4 and a fourth guide assembly 10. The third guide assembly 4 is positioned entirely below the chain conveyor mechanism 7, and the fourth guide assembly 10 is positioned above the end of the chain conveyor mechanism 7. The structures of the third guide assembly 4 and the fourth guide assembly 10 are identical to those of the first guide assembly 2. A receiving box 5 is provided below the third guide assembly 4.

[0066] By providing the third guide assembly 4 and the fourth guide assembly 10 , the pressing plate 20 can be conveniently pulled apart to both sides, making loading and unloading easier.

[0067] In order to facilitate the separate transportation of good and defective products; Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 As shown, a good product conveying mechanism is provided below the mounting frame 1, and the good product conveying mechanism includes:

[0068] A fixed frame 11 is rotatably mounted with a conveying roller 38. The conveying roller 38 is provided with circumferentially distributed receiving grooves 39. The conveying roller 38 is provided with a plurality of arcuate grooves 40. The ends of the arcuate grooves 40 are connected to adjacent receiving grooves 39. The depth of the receiving grooves 39 is greater than the sum of the depth of the arcuate grooves 40 and the diameter of the motor shaft 25.

[0069] The support rod 37 is mounted on the fixing frame 11. A plurality of arc-shaped limiting plates 42 are mounted on the support rod 37. The arc-shaped limiting plates 42 are adapted to the shape of the arc-shaped groove 40. The arc-shaped limiting plates 42 are located in the arc-shaped groove 40. The arc-shaped limiting plates 42 on both sides are symmetrically arranged, and the distance between the adjacent ends of the two arc-shaped limiting plates 42 is greater than the width of the receiving groove 39.

[0070] The guide part is provided on the outer sides of both ends of the conveying roller 38 and is used to guide the cylindrical rods on both sides outward;

[0071] The drive motor 13 is mounted on the fixed frame 11, and the output end of the drive motor 13 is connected to the shaft of the conveying roller 38;

[0072] By setting up a good product conveying mechanism, the motor shaft 25 can be separated from the pressure plate 20 based on the guidance of the cylindrical rod by the guide part, and fall into the accommodating groove 39 based on its own weight. As the driving motor 13 drives the conveying roller 38 to rotate, the motor shaft 25 is conveyed to the bottom. During the process, the arc-shaped limit plate 42 plays a blocking and limiting role to prevent the motor shaft 25 from detaching from both sides. When the motor shaft 25 is conveyed to the bottom, it loses the limitation of the arc-shaped limit plate 42 and is able to fall from under the conveying roller 38. The conveying roller 38 is used to realize the function of conveying good products.

[0073] In order to facilitate the delivery of good products; Figure 6 、 Figure 7 、 Figure 8 As shown, the guide portion includes:

[0074] A mounting plate 43 is mounted on the shaft of the conveying roller 38 so as to be slidable laterally. The mounting plate 43 and the conveying roller 38 are connected via a third spring 44.

[0075] The arc-shaped wedge 41 is provided on the outer circumferential wall of the mounting plate 43 , and the position of the arc-shaped wedge 41 corresponds one-to-one with the receiving groove 39 ;

[0076] The limiting plate 35 is installed at the end of the conveying roller 38, and the limiting plate 35 and the arc wedge block 41 are staggered;

[0077] The second electric telescopic cylinder 12 is mounted on the fixing frame 11, and an arc-shaped push plate 36 is installed at the output end of the second electric telescopic cylinder 12;

[0078] A good product conveying line 6 is provided below the conveying roller 38;

[0079] By setting up a guide part, after the system analyzes good and bad products, if the current product is good, the second electric telescopic cylinder 12 controls the arc push plate 36 to approach the fixed frame 11, and the mounting plate 43 is synchronously approached to the fixed frame 11 based on the force of the third spring 44, so that the arc wedge 41 moves to the movement path of the mounting wheel 21. When the motor shaft 25 passes by, based on the rotation of the conveying roller 38, the arc wedge 41 synchronously squeezes the mounting wheel 21, so that the motor shaft 25 is released from the clamping of the pressure plate 20, so that it accurately falls into the receiving groove 39; if the product is defective, the second electric telescopic cylinder 12 pushes the arc wedge 41 toward the conveying roller 38 through the arc push plate 36, so that the corresponding mounting wheel 21 passes above the conveying roller 38, is guided to fall by the third guide assembly 4, and the defective products are collected by the receiving box 5;

[0080] The control logic of this solution can be realized through material sensors. The control process is as follows:

[0081] S1: Loading, placing the motor shaft 25 in the positioning bracket 23;

[0082] S2: The chain conveyor mechanism 7 conveys the motor shaft 25 to the first detection position (the material sensor is used to determine whether the movement is in place);

[0083] S3: The first electric telescopic cylinder 9 controls the CCD camera module 26 at the corresponding position to capture an image, and then resets;

[0084] S4: The chain conveyor mechanism 7 conveys the motor shaft 25 to the second detection position. During this process, the angle of the motor shaft 25 is adjusted based on the cooperation between the mounting wheel 21 and the linkage plate 16 (the material sensor determines whether the movement is in place);

[0085] S5: The first electric telescopic cylinder 9 controls the CCD camera module 26 at the corresponding position to capture an image, and then resets;

[0086] S6: The image analysis module analyzes whether the collected image is qualified. If qualified, it will be transferred to S7; if unqualified, it will be transferred to S9;

[0087] S7: The chain conveyor mechanism 7 conveys the motor shaft 25 to the good product conveyor mechanism (the material sensor determines whether it has moved into place). At the same time, the second electric telescopic cylinder 12 operates to adapt the position of the arc wedge 41 to the mounting wheel 21. The drive motor 13 operates to use the arc wedge 41 to move the mounting wheel 21 so that the motor shaft 25 accurately falls into the receiving groove 39.

[0088] S8: The driving motor 13 controls the conveying roller 38 to continue rotating and output the qualified products;

[0089] S9: After the chain conveyor mechanism 7 conveys the motor shaft 25 over the good product conveyor mechanism, it passes through the third guide assembly 4, and the third guide assembly 4 releases the clamping state of the motor shaft 25, causing it to fall into the receiving box 5.

[0090] For the parts of the present invention that are not fully disclosed, those skilled in the art can ensure that the solutions of the present invention are successfully implemented based on common sense, normal thinking logic and existing technologies.

[0091] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A continuous inspection device for motor shaft production based on visual inspection, characterized in that: The invention comprises a mounting frame (1), wherein a chain plate conveying mechanism (7) is mounted on the mounting frame (1), a plurality of carrier plates (24) are mounted on the chain plates of the chain plate conveying mechanism (7), and positioning brackets (23) are mounted on the carrier plates (24) at intervals. The positioning brackets (23) are provided with V-shaped positioning grooves for accommodating motor shafts (25), and equidistantly distributed reference lines (34) are provided in the V-shaped positioning grooves. The plurality of positioning brackets (23) are linearly distributed along the direction of the reference lines (34). Two visual detection mechanisms are provided on the conveying path of the chain conveying mechanism (7); a first guide assembly (2) and a second guide assembly (3) are sequentially provided on the motion path of the mounting wheel (21); the positions of the first guide assembly (2) and the second guide assembly (3) are adapted to the two visual detection mechanisms; the visual detection mechanism comprises a support frame (8); a first electric telescopic cylinder (9) is mounted on the support frame (8); a mounting seat (19) is mounted on the output end of the first electric telescopic cylinder (9); a CCD shooting module (26) is mounted on the mounting seat (19); the CCD shooting module (26) is located directly above the motion path of the motor shaft (25) and the positioning bracket (23).

2. The continuous inspection device for motor shaft production based on visual inspection according to claim 1, characterized in that: An auxiliary pressing structure is installed on the mounting seat (19), and the auxiliary pressing structure includes a pressing frame (33). The pressing frame (33) is an inverted "F"-shaped structure with both ends bent upward. A sliding column (27) is installed on the pressing frame (33). The sliding column (27) slides up and down on the inner wall of the mounting seat (19). The sliding column (27) and the mounting seat (19) are connected by a second spring (28). The pressing frame (33) and the positioning bracket (23) are arranged in a staggered distribution.

3. The continuous inspection device for motor shaft production based on visual inspection according to claim 2, characterized in that: A support portion is mounted on the carrier plate (24), a cylindrical rod is rotatably mounted on the support portion, a pressure plate (20) is mounted on one end of the cylindrical rod, an annular cavity is provided on one side of the pressure plate (20) close to the support portion, an annular frame (30) is rotatably mounted in the annular cavity, and the annular frame (30) and the support portion are connected via a first spring (29); a mounting wheel (21) is mounted on the other end of the cylindrical rod; the centers of the mounting wheel (21), the pressure plate (20) and the cylindrical rod are on the same straight line.

4. The continuous inspection device for motor shaft production based on visual inspection according to claim 3 is characterized in that: The first guide assembly (2) and the second guide assembly (3) have the same structure and both comprise: A mounting plate (14), the mounting plate (14) being mounted on a side of the mounting frame (1); A transverse slide (15) is mounted on a mounting plate (14). Two first guide rods (18) and two second guide rods (17) are mounted on the transverse slide (15). The first guide rods (18) are in a "F"-shaped structure with their middle portions away from the CCD camera module (26). The spacing between the two first guide rods (18) is greater than the diameter of the cylindrical rod but smaller than the diameter of the mounting wheel (21). Both sides of the mounting wheel (21) are in an arcuate structure.

5. The continuous inspection device for motor shaft production based on visual inspection according to claim 4, characterized in that: The transverse slide (15) is slidably connected to the inner wall of the mounting plate (14), and a fixing knob (22) for fixing the transverse slide (15) is connected to the mounting plate (14) through a thread.

6. The continuous inspection device for motor shaft production based on visual inspection according to claim 4, characterized in that: A linkage plate (16) is mounted on the transverse slide (15) of the second guide assembly (3), and the linkage plate (16) is located on the movement path of the mounting wheel (21).

7. The continuous inspection device for motor shaft production based on visual inspection according to claim 6, characterized in that: The support portion comprises a first stand (31) and a second stand (32), wherein the first stand (31) is fixed on the carrier plate (24), and the second stand (32) is connected to the inner wall of the end of the first stand (31) by sliding up and down; and a threaded member for fixing the second stand (32) is connected to the inner wall of one side of the first stand (31) by threaded connection.

8. The continuous inspection device for motor shaft production based on visual inspection according to claim 4, characterized in that: A third guide assembly (4) and a fourth guide assembly (10) are mounted on the mounting frame (1); the third guide assembly (4) is located as a whole below the chain plate conveying mechanism (7); and the fourth guide assembly (10) is located above the end of the chain plate conveying mechanism (7); the structures of the third guide assembly (4) and the fourth guide assembly (10) are the same as those of the first guide assembly (2); and a receiving box (5) is provided below the third guide assembly (4).

9. The continuous inspection device for motor shaft production based on visual inspection according to claim 8, characterized in that: A good product conveying mechanism is provided below the mounting frame (1), and the good product conveying mechanism comprises: A fixed frame (11), a conveying roller (38) is rotatably mounted on the fixed frame (11), a circumferentially distributed receiving groove (39) is provided on the conveying roller (38), a plurality of arc-shaped grooves (40) are provided on the conveying roller (38), two ends of the arc-shaped groove (40) are connected to adjacent receiving grooves (39), and the depth of the receiving groove (39) is greater than the sum of the depth of the arc-shaped groove (40) and the diameter of the motor shaft (25); A support rod (37) is mounted on the fixing frame (11). A plurality of arc-shaped limiting plates (42) are mounted on the support rod (37) and are adapted to the shape of the arc-shaped groove (40). The arc-shaped limiting plates (42) are located in the arc-shaped groove (40). The arc-shaped limiting plates (42) on both sides are symmetrically arranged, and the distance between adjacent ends of the two arc-shaped limiting plates (42) is greater than the width of the accommodating groove (39). A guide portion is provided on the outside of both ends of the conveying roller (38) and is used to guide the cylindrical rods on both sides outward; A driving motor (13) is installed on the fixing frame (11), and an output end of the driving motor (13) is connected to the shaft of the conveying roller (38).

10. The continuous inspection device for motor shaft production based on visual inspection according to claim 9, characterized in that: The guide portion includes: A mounting plate (43) is mounted on the shaft of the conveying roller (38) in a lateral sliding manner, and the mounting plate (43) and the conveying roller (38) are connected via a third spring (44); An arc-shaped wedge (41), the arc-shaped wedge (41) is arranged on the circumferential outer wall of the mounting plate (43), and the position of the arc-shaped wedge (41) corresponds one-to-one to the receiving groove (39); A limit plate (35), the limit plate (35) is installed at the end of the conveying roller (38), and the limit plate (35) and the arc wedge (41) are staggered; The second electric telescopic cylinder (12) is installed on the fixing frame (11), and an arc-shaped push plate (36) is installed at the output end of the second electric telescopic cylinder (12).

Images