Visual inspection equipment for lower cutter part of overedger

Abstract

The utility model relates to the technical field of cutter surface defect detection, in particular to a visual inspection device for a lower cutter part of an overedger, which comprises a conveyor belt, a first-stage conveyor belt, a second-stage conveyor belt, a second-stage conveyor belt, a third-stage conveyor belt, a fourth-stage conveyor belt, a fourth-stage conveyor belt, a fourth-stage conveyor belt and a fifth-stage conveyor belt, the feeding station is positioned at the head part of the first-stage conveying belt, comprises a material guide frame and a feeding device, and can realize sequential feeding of the blades to be detected; the visual inspection stations are located above the conveying belt, the number of the visual inspection stations is multiple, and the visual inspection stations are sequentially arranged in the running direction of the conveying belt; the discharging and sorting stations are arranged at an angle from high to low in the displacement direction of the to-be-detected blades, each discharging and sorting station comprises a material channel and a plurality of sets of receiving devices, an inlet of each material channel makes contact with the tail of the second-stage conveying belt, the receiving devices can grab the to-be-detected blades sliding down along the material channels in a classified mode, and the to-be-detected blades slide down along the material channels. According to the device, automatic detection can be realized, and the detection efficiency and the detection precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool surface defect detection, in particular to a visual detection device for lower knife parts of an overlock sewing machine. Background Art

[0002] The lower blade parts of the overlock sewing machine are frequently used and easy to wear, so the market demand is relatively large. Due to its simple structure and bright surface, appearance defects are easy to attract attention and affect product quality, so it is necessary to conduct a full inspection of its appearance, especially important parts such as the cutting edge. At present, the traditional manual naked eye inspection method is used, which has low inspection efficiency and high false detection rate.

[0003] The Chinese invention patent application with application publication number CN116721054A discloses a method for factory quality inspection of cutting tools, comprising the following steps: step S1, obtaining a digitized image through a full-blade defect quality inspection device based on a CNC cutting tool, and preprocessing it; step S2, building a database for CBN cutting tool defects, and expanding the number of images in the database by translation, rotation, adding noise, and using adversarial models; step S3, using Makesense.ai semi-automatic annotation tool to annotate the images in the database, and dividing the 1,320 images in the database into two parts, of which 264 are used as a test set and 1,056 are used as a training set; step S4, training and testing a cutting tool factory quality inspection model; downloading the YOLOv7-D6 model from github, using train.py for training, and detect.py for testing; the training and test results are placed in the runs folder; step S5, loading the trained cutting tool factory quality inspection model, and inspecting the cutting tools leaving the factory. The above detection method can realize automated operation, has high detection efficiency, is suitable for industrial detection, and has a low false detection rate. However, the above public scheme does not further disclose a specific detection device for detecting tool defects. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a visual inspection device for the lower knife parts of an overlock sewing machine.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a visual inspection device for the lower blade parts of an overlock sewing machine, comprising:

[0006] The conveyor belt comprises a primary conveyor belt and a secondary conveyor belt, wherein the tail of the primary conveyor belt overlaps the head of the secondary conveyor belt;

[0007] A loading station, located at the head of the primary conveyor belt, comprises a material guide rack and a loading device, which can realize the sequential loading of the blades to be inspected;

[0008] A visual inspection station is located above the conveyor belt, and the visual inspection stations are in multiple groups and are arranged sequentially along the running direction of the conveyor belt;

[0009] The material unloading and sorting station is arranged at an angle from high to low along the displacement direction of the blade to be inspected. The material unloading and sorting station includes a material channel and a material receiving device. The inlet of the material channel is in contact with the tail of the secondary conveyor belt. The number of the material receiving devices is multiple groups, and the blade to be inspected sliding down the material channel can be classified and grabbed.

[0010] Preferably, the material guide rack includes a vertical bracket, a horizontal bracket and a loading rack, the vertical bracket is installed vertically to the horizontal bracket, the vertical bracket and the horizontal bracket are respectively provided with support seats whose positions can be adjusted along their length directions, two groups of the support seats are hinged to the two ends of the loading rack, the loading device includes a loading shaft and multiple groups of dividing wheels mounted on the loading shaft, and the end of the loading shaft is provided with a first motor for driving it to rotate.

[0011] Preferably, there are two groups of material dividing wheels, and a counting sensor is provided on the gear side close to any one of the material dividing wheels.

[0012] Preferably, a material turning assembly is provided between the primary conveyor belt and the secondary conveyor belt, the inlet end of the material turning assembly contacts the primary conveyor belt, and the outlet end contacts the secondary conveyor belt. The material turning assembly is semi-spiral, and baffle plates are provided on both sides to form a semi-enclosed cavity.

[0013] Preferably, the number of the visual inspection stations is five groups, one group of which is located at the rear end of the material turning assembly, and the five groups of visual inspection stations are used to inspect the cutting edge, left end face, right end face, front side and back side of the blade to be inspected in sequence.

[0014] Preferably, the material receiving device includes two groups of supporting beams and a material receiving cylinder located between the two groups of supporting beams, a first hinge shaft passes through the rear end of the cylinder body of the material receiving cylinder, two ends of the first hinge shaft are respectively connected to the two groups of supporting beams, a rod end of the material receiving cylinder is connected to a second hinge shaft, two ends of the second hinge shaft are respectively provided with a first material receiving plate and a second material receiving plate, the middle parts of the first material receiving plate and the second material receiving plate are hinged to the two groups of supporting beams through a third hinge shaft, and the first material receiving plate and the second material receiving plate can rotate around the third hinge shaft through the action of the material receiving cylinder.

[0015] Preferably, a limit plate is provided on the outer side of the supporting beam close to the second material receiving plate, and a notch is provided at the end of the limit plate. The first material receiving plate and the second material receiving plate are respectively provided with a first wing plate and a second wing plate on the side away from the end of the material receiving cylinder rod. The first wing plate and the second wing plate are provided with slots for supporting the blade to be inspected, and the second wing plate is also provided with a locking plate at the end of the slot that matches the notch.

[0016] Preferably, there are six groups of material receiving devices, which are arranged at intervals. Two groups of connecting rods are inserted between all the material receiving devices. The two groups of connecting rods are arranged at intervals along the length direction of the supporting beam. A number of support modules are provided at intervals on the two groups of connecting rods, and the support modules are connected to the support frame located at the bottom of the material receiving device.

[0017] Preferably, the support frame includes two groups of support members and connecting beams connected to the two groups of support members. The connecting beams are in two groups and arranged at intervals. The position of each group of connecting beams is adjustable along the length direction of the support members. A connecting rod is sleeved in the middle of each group of connecting beams, and the connecting rods are connected to the conveyor belt frame.

[0018] Preferably, the material channel is connected to each group of the material receiving devices through the limiting plate, a sink for accommodating the first wing plate and the second wing plate is provided on the material channel, and a detection sensor is provided in the middle of each group of the material receiving devices.

[0019] The beneficial effects of the utility model are:

[0020] 1. This device realizes the piece-by-piece dropping of the blades to be inspected through the loading station, avoiding visual inspection errors caused by the accumulation of blades to be inspected, and improving the accuracy of defect detection. The loading, inspection and sorting of the blades to be inspected are fully automated, with high inspection efficiency, suitable for industrial inspection, and reducing labor costs.

[0021] 2. The unloading and sorting station classifies and manages the blades to be inspected and qualified products with different defects according to the inspection results of the front-end visual inspection station, which helps the back-end to carry out targeted rectification of defects and improve the correction rate of defects in the blades to be inspected.

[0022] 3. The blade to be inspected relies on the inclination angle of the loading station and the unloading and sorting station, and uses gravity for unpowered transmission, which saves power consumption. By adjusting the inclination angle of the loading station and the unloading and sorting station, the sliding speed of the blade to be inspected can be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2This is a three-dimensional diagram of the loading station in the utility model;

[0025] Figure 3 This is a three-dimensional diagram of the material turning component in the utility model;

[0026] Figure 4 This is a three-dimensional diagram of the material sorting station in the utility model;

[0027] Figure 5 This is a three-dimensional diagram of the material receiving device in the utility model;

[0028] Figure 6 For the utility model Figure 5 A magnified image of area A;

[0029] Figure 7 It is a three-dimensional diagram of the support frame in the utility model;

[0030] Figure 8 It is a three-dimensional diagram of the material channel in the utility model.

[0031] In the figure, 1, conveyor belt; 101, primary conveyor belt; 102, secondary conveyor belt; 2, loading station; 3, guide rack; 4, loading device; 5, detection sensor; 6, visual inspection station; 7, unloading and sorting station; 8, receiving device; 9, material channel; 10, blade to be inspected; 11, vertical bracket; 12, horizontal bracket; 13, loading rack; 14, support seat; 15, dividing wheel; 16, loading shaft; 17, counting sensor; 18, first motor; 19, turning material Component; 20, material baffle plate; 21, supporting beam; 22, first hinge axis; 23, material receiving cylinder; 24, second hinge axis; 25, first material receiving plate; 26, second material receiving plate; 27, third hinge axis; 28, limiting plate; 29, notch; 30, first wing plate; 31, second wing plate; 32, notch; 33, positioning plate; 34, connecting rod; 35, supporting module; 36, supporting frame; 37, supporting member; 38, connecting beam; 39, connecting rod; 40, sink trough. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 To Attachment Figure 8 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0033] In the following description, the “running direction” may refer to the X direction in the drawings.

[0034] A visual inspection device for the lower blade parts of an overlock sewing machine, such as Figure 1 — Figure 3 As shown, it includes: a conveyor belt 1, a loading station 2, a visual inspection station 6 and a unloading and sorting station 7.

[0035] The conveyor belt 1 includes a primary conveyor belt 101 and a secondary conveyor belt 102. The tail of the primary conveyor belt 101 overlaps with the head of the secondary conveyor belt 102. The structures and working principles of the primary conveyor belt 101 and the secondary conveyor belt 102 are technical knowledge well known to those skilled in the art and will not be repeated here.

[0036] A material turning component 19 is provided between the primary conveyor belt 101 and the secondary conveyor belt 102. The inlet end of the material turning component 19 contacts the primary conveyor belt 101, and the outlet end contacts the secondary conveyor belt 102. The material turning component 19 is semi-spiral, and baffle plates 20 are provided on both sides thereof to form a semi-enclosed cavity. The blade 10 to be inspected runs along the primary conveyor belt 101 to the inlet end of the material turning component 19, enters its semi-enclosed cavity, and slides down along the semi-spiral trajectory to the secondary conveyor belt 102 due to the action of gravity to achieve turning over.

[0037] The loading station 2 is located at the head of the primary conveyor belt 101, and includes a guide frame 3 and a loading device 4. The guide frame 3 includes a vertical bracket 11, a horizontal bracket 12 and a loading frame 13. The vertical bracket 11 and the horizontal bracket 12 are vertically installed. The vertical bracket 11 and the horizontal bracket 12 are respectively provided with support seats 14 whose positions are adjustable along their length directions. Two groups of support seats 14 are hinged to the two ends of the loading frame 13. By adjusting the position of the support seats 14, the inclination angle of the loading frame 13 can be adjusted. The loading device 4 includes a loading shaft 16 and multiple groups of dividing wheels 15 sleeved on the loading shaft 16. The end of the loading shaft 16 is provided with a first motor 18 that drives it to rotate. The blades 10 to be inspected are arranged in order on the loading rack 13, and are moved to the vicinity of the dividing wheel 15 by gravity. The first motor 18 drives the dividing wheel 15 to rotate. During the rotation of the dividing wheel 15, each gear shifts a blade 10 to be inspected to fall onto the primary conveyor belt 101, so that the blades 10 to be inspected fall one by one. In order to ensure that the blades 10 to be inspected fall neatly onto the primary conveyor belt 101, in this embodiment, the number of dividing wheels 15 is set to two groups, which are respectively close to the two ends along the length direction of the blades 10 to be inspected, and a counting sensor 17 is provided on the gear side close to any dividing wheel 15. In this embodiment, the counting sensor 17 uses a proximity switch, and the total number of blades 10 to be inspected is obtained by detecting the cumulative number of teeth of the dividing wheel 15. The proximity switch can also use a sensor such as a photoelectric switch well known to those skilled in the art.

[0038] The visual inspection station 6 is located above the conveyor belt 1. There are multiple groups of visual inspection stations 6, which are arranged sequentially along the running direction of the conveyor belt 1. In the present embodiment, there are five groups of visual inspection stations 6, four of which are arranged sequentially on the primary conveyor belt 101, and one group of visual inspection stations 6 is located on the secondary conveyor belt 102 at the rear end of the turning component 19. The five groups of visual inspection stations 6 are used sequentially to detect whether there are defects on the cutting edge, left end face, right end face, front side and back side of the blade 10 to be inspected.

[0039] like Figure 4 — Figure 8 As shown, the unloading and sorting station 7 is arranged at an angle from high to low along the displacement direction of the blade 10 to be inspected. The unloading and sorting station 7 includes a material channel 9 and a material receiving device 8. The inlet of the material channel 9 is in contact with the tail of the secondary conveyor belt 102. The blades 10 to be inspected from the secondary conveyor belt 102 enter the material channel 9 in sequence and slide down in the material channel 9 due to gravity.

[0040] The receiving device 8 includes two groups of supporting beams 21 and a receiving cylinder 23 located between the two groups of supporting beams 21. The first hinge shaft 22 is passed through the rear end of the cylinder body of the receiving cylinder 23. The two ends of the first hinge shaft 22 are respectively connected to the two groups of supporting beams 21. The rod end of the receiving cylinder 23 is connected to the second hinge shaft 24. The two ends of the second hinge shaft 24 are respectively provided with a first receiving plate 25 and a second receiving plate 26. The middle parts of the first receiving plate 25 and the second receiving plate 26 are hinged to the two groups of supporting beams 21 through a third hinge shaft 27. Through the action of the receiving cylinder 23, the first receiving plate 25 and the second receiving plate 26 can rotate around the third hinge shaft 27. The first receiving plate 25 and the second receiving plate 26 are respectively provided with a first wing plate 30 and a second wing plate 31 on the side away from the rod end of the receiving cylinder 23. The first wing plate 30 and the second wing plate 31 are provided with a notch 32 for carrying the blade 10 to be inspected.

[0041] A limiting plate 28 is provided on the outer side of the supporting beam 21 near the second material receiving plate 26. The material channel 9 is connected to each group of material receiving devices 8 through the limiting plate 28. A notch 29 is provided at the end of the limiting plate 28. The second wing plate 31 is also provided with a locking plate 33 matching the notch 29 at the end of the groove 32. A sink 40 for accommodating the first wing plate 30 and the second wing plate 31 is provided on the material channel 9.

[0042] When the rod end of the receiving cylinder 23 is extended, the first receiving plate 25 and the second receiving plate 26 rotate around the third hinge shaft 27, and the first wing plate 30 and the second wing plate 31 leave the material channel 9. At this time, the blade 10 to be inspected slides freely in the material channel 9. When the rod end of the receiving cylinder 23 is retracted, the first wing plate 30 and the second wing plate 31 enter the sink 40. At this time, the blocking plate 33 on the second wing plate 31 intercepts the material channel 9. When the blade 10 to be inspected slides in the material channel 9, it is blocked by the blocking plate 33 on the second wing plate 31. The rod end of the receiving cylinder 23 extends to flip the blade 10 to be inspected onto the supporting beam 21, so as to achieve the grasping of the blade 10 to be inspected. In order to ensure the accuracy of the grasping process of the first wing plate 30 and the second wing plate 31, a detection sensor 5 is provided in the middle of the material channel 9 corresponding to each group of receiving devices 8. The detection sensor 5 can be a photoelectric switch or other sensor well known to those skilled in the art.

[0043] There are multiple groups of material collecting devices 8. In the present embodiment, there are six groups of material collecting devices 8, which are arranged at intervals. The six groups of material collecting devices 8 are respectively used to grab products with defects on the cutting edge, defects on the left end face, defects on the right end face, defects on the front face, defects on the back face, and qualified products, so as to realize the classified grabbing of the blades 10 to be inspected.

[0044] Two groups of connecting rods 34 are passed through all the material receiving devices 8. The two groups of connecting rods 34 are arranged at intervals along the length direction of the supporting beam 21. A plurality of supporting modules 35 are sleeved on the two groups of connecting rods 34 at intervals. The supporting modules 35 are connected to a supporting frame 36 located at the bottom of the material receiving device 8.

[0045] The support frame 36 includes two groups of support members 37 and connecting beams 38 connected to the two groups of support members 37. There are two groups of connecting beams 38, which are arranged at intervals. The position of each group of connecting beams 38 is adjustable along the length direction of the support members 37. A connecting rod 39 is sleeved in the middle of each group of connecting beams 38, and the connecting rods 39 are connected to the conveyor belt 1 frame. By changing the position of the connecting beams 38 relative to the support members 37, the inclination angle of the unloading and sorting station 7 can be changed, thereby adjusting the sliding speed of the blade 10 to be inspected in the material channel 9.

[0046] The working principle of the device is that the blades 10 to be inspected are placed one by one on the primary conveyor belt 101 in the same direction through the loading station 2, follow the movement of the primary conveyor belt 101, pass through four groups of visual inspection stations 6, and complete the edge, left end face, right end face, and front defect inspection of the blades 10 to be inspected in turn. The blades 10 to be inspected are turned over by the turning component 19, enter the secondary conveyor belt 102 and pass through the visual inspection station 6 for reverse defect inspection. The blades 10 to be inspected that have completed the inspection fall into the material channel 9. The detection sensors 5 provided on the material channel 9 control the six groups of receiving devices 8 to classify and grab the blades 10 to be inspected according to the detection results of the five groups of visual inspection stations 6 in front, so as to complete the automatic detection of the blades 10 to be inspected, with high detection efficiency and high accuracy, and classified transportation can be realized according to the detection results.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual inspection device for lower blade parts of an overlock sewing machine, characterized in that: include: A conveyor belt (1), comprising a primary conveyor belt (101) and a secondary conveyor belt (102), wherein the tail of the primary conveyor belt (101) overlaps the head of the secondary conveyor belt (102); A loading station (2), located at the head of the primary conveyor belt (101), comprises a material guide frame (3) and a loading device (4), and can realize sequential loading of the blades (10) to be inspected; Visual inspection stations (6) are located above the conveyor belt (1), and the number of the visual inspection stations (6) is a plurality of groups, and they are arranged sequentially along the running direction of the conveyor belt (1); The material unloading and sorting station (7) is arranged at an angle from high to low along the displacement direction of the blade to be inspected (10). The material unloading and sorting station (7) includes a material channel (9) and a material receiving device (8). The inlet of the material channel (9) contacts the tail of the secondary conveyor belt (102). The number of the material receiving devices (8) is multiple groups, and the blade to be inspected (10) sliding down along the material channel (9) can be classified and grasped.

2. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 1, characterized in that: The material guide frame (3) includes a vertical support (11), a horizontal support (12) and a loading frame (13), wherein the vertical support (11) and the horizontal support (12) are vertically installed, and the vertical support (11) and the horizontal support (12) are respectively provided with a support seat (14) whose position can be adjusted along the length direction thereof, and two groups of the support seats (14) are hinged to the two ends of the loading frame (13), and the loading device (4) includes a loading shaft (16) and a plurality of groups of dividing wheels (15) sleeved on the loading shaft (16), and a first motor (18) is provided at the end of the loading shaft (16) for driving it to rotate.

3. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 2, characterized in that: The number of the material dividing wheels (15) is two groups, and a counting sensor (17) is provided on the gear side close to any one of the material dividing wheels (15).

4. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 1, characterized in that: A material turning component (19) is provided between the primary conveyor belt (101) and the secondary conveyor belt (102); the inlet end of the material turning component (19) contacts the primary conveyor belt (101), and the outlet end contacts the secondary conveyor belt (102); the material turning component (19) is semi-spiral, and baffle plates (20) are provided on both sides thereof to form a semi-enclosed cavity.

5. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 4, characterized in that: The number of the visual inspection stations (6) is five, one of which is located at the rear end of the material turning component (19). The five groups of visual inspection stations (6) are used to inspect the cutting edge, left end face, right end face, front side and back side of the blade (10) to be inspected.

6. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 5, characterized in that: The material receiving device (8) comprises two groups of supporting beams (21) and a material receiving cylinder (23) located between the two groups of supporting beams (21); a first hinge shaft (22) passes through the rear end of the cylinder body of the material receiving cylinder (23); two ends of the first hinge shaft (22) are respectively connected to the two groups of supporting beams (21); a rod end of the material receiving cylinder (23) is connected to a second hinge shaft (24); two ends of the second hinge shaft (24) are respectively provided with a first material receiving plate (25) and a second material receiving plate (26); the middle parts of the first material receiving plate (25) and the second material receiving plate (26) are hinged to the two groups of supporting beams (21) through a third hinge shaft (27); through the action of the material receiving cylinder (23), the first material receiving plate (25) and the second material receiving plate (26) can rotate around the third hinge shaft (27).

7. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 6, characterized in that: A limiting plate (28) is provided on the outer side of the supporting crossbeam (21) near the second material receiving plate (26), and a notch (29) is provided at the end of the limiting plate (28). The first material receiving plate (25) and the second material receiving plate (26) are respectively provided with a first wing plate (30) and a second wing plate (31) on the side away from the rod end of the material receiving cylinder (23). The first wing plate (30) and the second wing plate (31) are provided with a notch (32) for supporting the blade (10) to be inspected, and the second wing plate (31) is also provided with a locking plate (33) that matches the notch (29) at the end of the notch (32).

8. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 7, characterized in that: The number of the material receiving devices (8) is six and they are arranged at intervals. Two groups of connecting rods (34) are passed through all the material receiving devices (8). The two groups of connecting rods (34) are arranged at intervals along the length direction of the supporting crossbeam (21). A plurality of supporting modules (35) are sleeved at intervals on the two groups of connecting rods (34). The supporting modules (35) are connected to a supporting frame (36) located at the bottom of the material receiving device (8).

9. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 8, characterized in that: The support frame (36) comprises two groups of support members (37) and connecting beams (38) connected to the two groups of support members (37). The connecting beams (38) are in two groups and arranged at intervals. The position of each group of connecting beams (38) is adjustable along the length direction of the support members (37). A connecting rod (39) is sleeved in the middle of each group of connecting beams (38), and the connecting rods (39) are connected to the conveyor belt (1) frame.

10. The visual inspection device for lower blade parts of an overlock sewing machine according to claim 8, characterized in that: The material channel (9) is connected to each group of the material receiving devices (8) through the limiting plate (28), and a trough (40) for accommodating the first wing plate (30) and the second wing plate (31) is provided on the material channel (9), and a detection sensor (5) is provided in the middle of each group of the material receiving devices (8).

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