CN117781952A - Method and device for detecting concentricity of fish-eye needle and method for detecting defective products - Google Patents
Method and device for detecting concentricity of fish-eye needle and method for detecting defective products Download PDFInfo
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- CN117781952A CN117781952A CN202311870254.4A CN202311870254A CN117781952A CN 117781952 A CN117781952 A CN 117781952A CN 202311870254 A CN202311870254 A CN 202311870254A CN 117781952 A CN117781952 A CN 117781952A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000002950 deficient Effects 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 101
- 241000251468 Actinopterygii Species 0.000 claims abstract description 97
- 238000007689 inspection Methods 0.000 claims abstract description 43
- 238000007664 blowing Methods 0.000 claims description 60
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
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- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a detection method and a detection device for the concentricity of a fish-eye needle and a detection method for defective products, wherein the detection method for the concentricity of the fish-eye needle comprises the following steps: placing the fish-eye needle in a vibration disc, and controlling the vibration disc to enable the fish-eye end of the fish-eye needle to be far away from the vibration disc for vibration; conveying the fish eye needle with the fish eye end far away from the vibration disc to a detection station on the rotary inspection table through a feeding track; after the detection station is detected to receive the fish-eye needle, controlling the clamping jaw to clamp the fish-eye needle and rotate the rotary inspection table; when the fish-eye needle rotates to a target detection station, shooting a body image of the fish-eye needle and a refraction image of the fish-eye needle refracted through the triple prism; detecting a first offset of the body image in a preset x direction and a second offset of the refraction image in a preset y direction; and calculating the concentricity of the fish-eye needle according to the first offset and the second offset. The method disclosed by the invention can be used for solving the problem that the concentricity of the fish-eye needle cannot be effectively detected when the fish-eye needle is used as a raw material in the prior art.
Description
Technical Field
The invention belongs to the technical field of semiconductors, and relates to a detection method and device for concentricity of a fish eye pin needle and a detection method for defective products.
Background
The silicon carbide module is used on the new energy automobile, the module plays a main inversion role, the fisheye pin needles in the silicon carbide module have the functions of controlling the on, off and feedback of the chip, and the fisheye pin needles with different numbers are required to be welded on each silicon carbide module. The fish eye pin needles are welded on the silicon carbide module by an ultrasonic welding head, and the fish eye pin needles on the welded module are assembled with a PCB (Printed Circuit Board ) driving board which plays a role in driving a module switch.
When the fish eye pin needle is bent, the fish eye pin needle cannot completely enter the welding head during ultrasonic welding, so that welding is invalid; secondly, if the welded fish eye pin needle is bent or is insufficient in height, the fish eye pin needle cannot be inserted into the hole of the PCB driving board.
In the industry, in order to determine the bending degree of the fish-eye pin needle, two ways are generally adopted to detect the concentricity of the fish-eye pin needle, and then the bending degree of the fish-eye pin needle can be reflected by the detected concentricity, and the two concentricity detection ways are as follows: 1. when the fish eye pin needle is a raw material, no effective method is used for measuring concentricity, and the detection efficiency is low; 2. when the fish eye pin needle is welded to the silicon carbide module, the detection is generally performed through AOI (Automatic Optical Inspection) equipment of a finished product, but the welding of the fish eye pin needle is generally positioned before the module is heated, the warping degree of the module after the module is heated can be changed, the fish eye pin needle welded to the silicon carbide module can also be influenced by the warping of the module on the basis, so that some needles which are bent at some point can be arranged, the bending of the finished product can be problematic, and the whole finished product can be scrapped when one fish eye pin needle is problematic due to the fact that the silicon carbide module is the finished product.
Therefore, there is a need in the art for an efficient method for detecting concentricity of fish-eye pin needles when the fish-eye pin needles are used as raw materials, so as to overcome the above-mentioned problems in the prior art.
Disclosure of Invention
The invention provides a method and a device for detecting concentricity of a fish-eye pin needle, which are used for solving the problem that the concentricity of the fish-eye pin needle cannot be effectively detected when the fish-eye pin needle is used as a raw material in the prior art.
In order to solve the above technical problems, in a first aspect, the present invention provides a method for detecting concentricity of a fish eye pin needle, the method comprising:
placing a fish eye pin needle in a vibration disc, and controlling the vibration disc to enable the fish eye end of the fish eye pin needle to be far away from the vibration disc for vibration;
the fish eye pin needle of which the fish eye end is far away from the vibration disc is conveyed to a detection station on a rotary inspection table through a feeding track;
after the detection station is detected to receive the fisheye pin needle, controlling a clamping jaw to clamp the fisheye pin needle and rotating the rotary inspection bench;
when the fish eye pin needle rotates to a target detection station, shooting a body image of the fish eye pin needle and a refraction image of the fish eye pin needle refracted through a prism;
detecting a first offset of the body image in a preset x direction and a second offset of the refraction image in a preset y direction;
and calculating the concentricity of the fish-eye pin needle according to the first offset and the second offset.
Optionally, the calculating concentricity of the fish eye pin needle according to the first offset and the second offset includes:
calculating the square sum of the first offset and the second offset;
and calculating the arithmetic square root of the square sum to obtain the concentricity of the fish eye pin needle.
Optionally, the capturing the body image of the fisheye pin needle and the refraction image of the fisheye pin needle refracted by the prism includes:
shooting an image of the fish eye pin needle body through a camera;
and shooting a refraction image of the fish eye pin needle through the camera, wherein the refraction image is perpendicular to the body image.
Optionally, after detecting that the detection station receives the fisheye pin needle, controlling the clamping jaw to clamp the fisheye pin needle and rotate the rotation inspection bench, including:
after the detection station is detected to receive the fisheye pin needle, controlling a clamping jaw to clamp the fisheye pin needle;
rotating the rotary inspection bench to enable the fish eye pin needle to rotate a target angle each time, wherein the target angle is an angle value obtained by dividing 360 degrees by the number of inspection stations.
In a second aspect, the invention provides a method for detecting defective products of fish eye pin needles, which comprises the following steps:
according to the detection method of the concentricity of the fish-eye pin needle in the first aspect, the concentricity of the fish-eye pin needle is calculated;
obtaining the height of the fisheye pin needle according to the height of the body image of the fisheye pin needle;
judging whether the concentricity of the fish eye pin needle is within a preset concentricity threshold range or not, and whether the height of the fish eye pin needle is within a preset height threshold range or not:
if the concentricity of the fish-eye pin needle is within a preset concentricity threshold range and the height of the fish-eye pin needle is within a preset height threshold range, blowing the fish-eye pin needle into a good product box through a first air blowing pipe;
if the concentricity of the fish eye pin needle exceeds the concentricity threshold range or the height of the fish eye pin needle exceeds the height threshold range, the fish eye pin needle is blown into the defective product box through a second air blowing pipe.
In a third aspect, the present invention provides a device for detecting concentricity of a fish-eye pin needle, the device comprising:
the vibration disc is used for placing the fish eye pin needle;
the feeding hole of the feeding rail is connected with the discharging hole of the vibration disc;
the fish eye pin needle enters the detection station through the discharge hole of the feeding track;
the detection module comprises a camera and a prism, wherein a lens of the camera faces towards a target detection station and the prism, a first side face and a second side face of the prism face towards the target detection station and the lens of the camera respectively, and the first side face and the second side face are vertical.
Optionally, the detection device further includes:
the first air blowing pipe is arranged on one side, close to the detection station, of the rotary inspection table, and the air outlet end of the first air blowing pipe faces to a first air blowing detection station preset by the rotary inspection table;
the good product box is arranged at the periphery of the rotary inspection table, and the inlet of the good product box is close to the first blowing detection station;
the second air blowing pipe is arranged on one side, close to the detection station, of the rotary inspection table, and the air outlet end of the second air blowing pipe faces to a second air blowing detection station preset by the rotary inspection table;
defective product box, defective product box set up in the periphery of rotatory checkout stand, just the import of defective product box is close to the second detection station of blowing.
Optionally, the number of the detecting stations is at least three, and the at least three detecting stations are a target detecting station, a first blowing detecting station and a second blowing detecting station.
Optionally, be provided with the clamping jaw in the detection station, the clamping jaw includes first clamping part, second clamping part and cylinder, first clamping part with the second clamping part set up in on the cylinder, the cylinder drives first clamping part with second clamping part relative movement, the fisheye pin needle passes through first clamping part with the second clamping part centre gripping in the detection station.
Optionally, the cross section of the triangular prism is an isosceles right triangle.
Compared with the prior art, the detection method for the concentricity of the fish eye pin needle has the following beneficial effects:
according to the invention, the first offset of the body image in the x direction can be obtained by shooting the body image of the fisheye pin needle, the second offset of the refraction image in the y direction can be obtained by shooting the refraction image of the fisheye pin needle through the prism, and it can be understood that the first offset and the second offset are two offsets of the fisheye pin needle in different directions, so that the effective concentricity of the fisheye pin needle can be obtained through the offsets in the two directions. Therefore, the invention can be used for solving the problem that the concentricity of the fish eye pin needle cannot be effectively detected when the fish eye pin needle is used as a raw material in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present invention, but not all embodiments, and other drawings obtained according to these drawings without inventive effort to those skilled in the art are all within the scope of the protection of the present application.
Fig. 1 is a flowchart of a method for detecting concentricity of a fish eye pin needle according to an embodiment of the present application;
fig. 2 is an image of a fish eye pin needle according to an embodiment of the present application;
fig. 3 is a refraction image of a fish eye pin needle according to an embodiment of the present application;
fig. 4 is a flowchart of a method for detecting a defective fish eye pin needle provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a device for detecting concentricity of a fish eye pin needle according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a clamping jaw according to an embodiment of the present application.
Description of the figure:
510-vibration disc, 511-fish eye pin needle, 520-feeding track, 530-rotary inspection bench, 531-detection station, 532-target detection station, 541-camera, 542-triangular prism, 551-first air-blowing tube, 552-good box, 553-second air-blowing tube, 554-bad box, 560-clamping jaw, 561-first clamping part, 562-second clamping part, 563-cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order that the present disclosure may be more fully described and fully understood, the following description is provided by way of illustration of embodiments and specific examples of the present invention; this is not the only form of practicing or implementing the invention as embodied. The description covers the features of the embodiments and the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and sequences of steps. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the description of the embodiments of the present invention, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: in addition, in the description of the embodiments of the present application, "a plurality" means two or more, and other words and the like, it is to be understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments of the present application and the features of the embodiments may be combined with each other without conflict.
Fig. 1 is a flowchart of a method for detecting concentricity of a fish eye pin needle, which comprises the following steps.
And step S101, placing the fish eye pin needle in a vibration disc, and controlling the vibration disc to enable the fish eye end of the fish eye pin needle to be far away from the vibration disc for vibration.
It should be noted that the number of the fisheye pin needles placed in the vibration plate may be set according to the specific requirements of the application, for example, 100 fisheye pin needles are placed in the vibration plate each time.
It should be noted that, the vibration dish is comparatively mature technique in the relevant field, can be with unordered work piece automatic orderly directional arrangement, accurately carry the next process through vibration, consequently, can vibrate the vibration dish when specific application for the fisheye end of fisheye pin needle is kept away from the vibration dish, and here no more detailed description.
Step S102, conveying the fish eye pin needle with the fish eye end far away from the vibration disc to a detection station on the rotary inspection table through a feeding track.
It is understood that the fish-eye pin needle with the fish-eye end far away from the vibration disc can be output to the feeding track through the outlet of the vibration disc, and transported through the feeding track.
Specifically, the feeding track can be any track that can transport fish eye pin needle, for example, the feeding track can drive through the motor in order to realize incessant driven effect, also can be provided with on the feeding track and make fish eye pin needle can firm install in the orbital mount pad of feeding to make fish eye pin needle can stabilize the conveying to detecting the station.
Step S103, after the detection station receives the fisheye pin needle, the clamping jaw is controlled to clamp the fisheye pin needle and rotate the rotary inspection bench.
Specifically, the manner in which the detection station detects whether the fisheye pin needle is received may be any manner, for example, a sensor may be provided on the detection station, and whether the fisheye pin needle is received by the detection station may be detected by the sensor.
Specifically, the manner of controlling the clamping jaw to clamp the fisheye pin needle may be any manner that can be implemented, for example, before the fisheye pin needle is not detected at the detection station, the clamping jaw may be kept in a loose state without clamping force, and after the fisheye pin needle is detected at the detection station, the clamping jaw may be controlled to clamp the fisheye pin needle.
Specifically, the manner of rotating the rotary inspection bench may be any manner that can be implemented, for example, the rotating shaft of the rotary inspection bench may be connected to the rotating shaft of the motor, so that the rotary inspection bench may be driven to rotate when the rotating shaft of the motor works.
And step S104, when the fish eye pin needle rotates to the target detection station, shooting a body image of the fish eye pin needle and a refraction image of the fish eye pin needle refracted through the triangular prism.
The body image of the fish-eye pin needle is an image obtained by photographing the fish-eye pin needle body, and the refraction image is an image obtained by photographing an image of the fish-eye pin needle refracted by the triangular prism.
The photographing mode of photographing the body image and the refraction image may be any mode, for example, photographing by a camera may be performed to obtain an image picture, or photographing by a camera may be performed to obtain an image video.
It can be understood that the placing position of the shooting mechanism needs to be used for enabling the shooting mechanism to shoot the body image of the fish-eye pin needle when shooting, and the refracting image of the fish-eye pin needle refracted through the triple prism can be shot, and the position of the shooting mechanism can be specifically adjusted according to the specific effect when shooting, so that the shooting mechanism can meet the shooting requirement in the step.
It can be understood that by photographing the body image and the refraction image of the fish-eye pin needle, the images of the fish-eye pin needle in two directions can be obtained. For example, a front view image (i.e., body image) and a side view image (i.e., refraction image) of the fish eye pin needle may be obtained.
As a specific example, fig. 2 shows an image of the body of the fisheye pin needle, and fig. 3 shows a refractive image of the fisheye pin needle.
Step S105 detects a first offset of the body image in a preset x direction and a second offset of the refraction image in a preset y direction.
It should be noted that, the first offset and the second offset are offsets capable of reflecting concentricity of the fish-eye pin needle, for example, the preset x direction may be an x direction in a preset three-dimensional coordinate system, the preset y direction may be a y direction of the three-dimensional coordinate system, an origin of the three-dimensional coordinate system may be an end (i.e. a needle tip) of the fish-eye pin needle away from the fish-eye end, and a z axis of the three-dimensional coordinate system is a reference axis (typically a vertical direction) of the fish-eye pin needle body which is expected to be held, and naturally, the first offset may be an x coordinate of the fish-eye end of the fish-eye pin needle in the three-dimensional coordinate system, and the second offset is a y coordinate of the fish-eye end of the fish-eye pin needle in the three-dimensional coordinate system. Specifically, a first offset of the body image in a preset x direction may be obtained as shown in fig. 2, and a second offset of the refraction image in a preset y direction may be obtained as shown in fig. 3.
Step S106, calculating the concentricity of the fish-eye pin needle according to the first offset and the second offset.
The concentricity in this step is the coaxiality between the actual axis formed by the needle body of the fisheye pin needle and the reference axis (usually, the vertical direction) expected to be formed by the needle body of the fisheye pin needle. Therefore, the calculation manner of obtaining the concentricity of the fish-eye pin needle by the first offset and the second offset can be any manner which can be realized.
Thus, by shooting the body image of the fisheye pin needle, the first offset of the body image in the x direction can be obtained, and shooting the refraction image of the fisheye pin needle through the prism refraction can obtain the second offset of the refraction image in the y direction, it can be understood that the first offset and the second offset are the two offsets of the fisheye pin needle in different directions, and further the effective concentricity of the fisheye pin needle can be obtained through the offsets in the two directions, so that the problem that the concentricity of the fisheye pin needle cannot be effectively detected when the fisheye pin needle is a raw material in the prior art can be solved.
In an alternative implementation, the calculating concentricity of the fish-eye pin needle according to the first offset and the second offset includes:
calculating the square sum of the first offset and the second offset;
and calculating the arithmetic square root of the square sum to obtain the concentricity of the fish eye pin needle.
In this embodiment, the concentricity of the fish-eye pin needle is obtained by the square root of the sum of squares of the first offset and the second offset, and therefore, in this embodiment, the first offset and the second offset need to be perpendicular to each other. It will thus be appreciated that the body and refractive images need to be able to obtain perpendicular first and second offsets, for example, the body and refractive images may be made perpendicular to achieve perpendicular first and second offsets.
It can be understood that the calculation method of the square root of the sum of squares of the first offset and the second offset can obtain the concentricity of the fish-eye pin needle, and the calculation of the square root of the sum of squares of the two values is a simpler operation method, so that the calculation method of the concentricity of the fish-eye pin needle obtained in the implementation method can be understood to effectively save the calculation resource of the concentricity.
In an optional implementation manner, the capturing the body image of the fisheye pin needle and the refraction image of the fisheye pin needle refracted by the prism includes:
shooting an image of the fish eye pin needle body through a camera;
and shooting a refraction image of the fish eye pin needle through the camera, wherein the refraction image is perpendicular to the body image.
It will be appreciated that the cross section of an isosceles right triangle is an isosceles right triangle, and that the two sides (e.g., the first side and the second side) of the isosceles right triangle are perpendicular to each other. It can be further understood that, when the fisheye pin needle is disposed on the first side, the refractive image of the fisheye pin needle, which is seen from the second side and is folded toward the second side through the first side, is perpendicular to the body image of the fisheye pin needle. The vertical body image and the refraction image are seen, which is equivalent to the images of the front face (or the back face) and the side face of the fish-eye pin needle, so that the offset of the fish-eye pin needle can be observed from different directions. And the refraction image is vertical to the body image, so that a first offset and a second offset which are vertical to each other can be obtained, and the concentricity of the fish eye pin needle can be calculated more easily.
In an alternative implementation manner, after detecting that the detection station receives the fisheye pin needle, the controlling claw clamps the fisheye pin needle and rotates the rotation inspection bench, including:
after the detection station is detected to receive the fisheye pin needle, controlling a clamping jaw to clamp the fisheye pin needle;
rotating the rotary inspection bench to enable the fish eye pin needle to rotate a target angle each time, wherein the target angle is an angle value obtained by dividing 360 degrees by the number of inspection stations.
Specifically, the number of the inspection stations can be set according to specific requirements in application, for example, the number of the inspection stations can be 8 or 12.
It can be understood that the rotary inspection bench is enabled to rotate the target angle every time, so that the current detection station rotates to the next detection station to receive the fisheye pin needle after receiving the fisheye pin needle, a plurality of detection stations can all receive the fisheye pin needle, the concentricity detection process of a plurality of fisheye pin needles can be enabled to be continuous, and the concentricity detection efficiency of the fisheye pin needle is effectively improved.
Fig. 4 is a flowchart of a method for detecting defective fish eye pin needles, which is provided by the embodiment of the invention, and includes the following steps.
Step 401, calculating the concentricity of the fish eye pin needle according to the detection method of the concentricity of the fish eye pin needle;
step 402, obtaining the height of the fisheye pin needle according to the height of the body image of the fisheye pin needle;
step 403, determining whether the concentricity of the fisheye pin needle is within a preset concentricity threshold, and whether the height of the fisheye pin needle is within a preset height threshold:
if the concentricity of the fish-eye pin needle is within a preset concentricity threshold range and the height of the fish-eye pin needle is within a preset height threshold range, blowing the fish-eye pin needle into a good product box through a first air blowing pipe;
if the concentricity of the fish eye pin needle exceeds the concentricity threshold range or the height of the fish eye pin needle exceeds the height threshold range, the fish eye pin needle is blown into the defective product box through a second air blowing pipe.
The height of the fisheye pin needle is the height of the body image of the fisheye pin needle.
The concentricity threshold range and the height threshold range may be set according to the specific requirements of the application, and are not particularly limited herein.
It should be noted that, in blowing the fisheye pin needle to the good product box through first gas blowing pipe, the mode of blowing the fisheye pin needle to the bad product box through the second gas blowing pipe can be any mode that can realize, for example, can control the break-make of first gas blowing pipe and second gas blowing pipe through the solenoid valve, when needs blow through first gas blowing pipe, can make first gas blowing pipe open, blow to the fisheye pin needle for the fisheye pin needle blows to the good product box in.
It can be appreciated that by the scheme provided by the embodiment, the fish eye pin needle meeting concentricity requirement and height requirement can be screened out.
Fig. 5 is a schematic structural diagram of a device for detecting concentricity of a fish-eye pin needle according to the present invention, the device comprises:
a vibration plate 510 for placing a fish eye pin needle 511;
the feeding rail 520, the feeding hole of the feeding rail 520 is connected with the discharging hole of the vibration disc 510;
the rotary inspection table 530 is provided with at least one detection station 531, a discharge hole of the feeding rail 520 is connected with the rotary inspection table 530, and the fish eye pin 511 enters the detection station 531 through the discharge hole of the feeding rail 520;
the detection module comprises a camera 541 and a prism 542, wherein a lens of the camera 541 faces the target detection station 532 and the prism 542, a first side face and a second side face of the prism 542 face the target detection station 532 and the lens of the camera 541, and the first side face and the second side face are perpendicular.
Specifically, the fisheye pin needle 511 may be placed on the surface of the vibration disk in any form, and by controlling the vibration of the vibration disk 510, the fisheye pin needle 511 may be made to assume a desired direction.
In particular, the feeding rail 520 may be any rail for feeding, for example, the feeding rail 520 may be a conveyor belt provided with a plurality of fish eye pin needles 511 at fixed positions. It will be appreciated that the feed port of the feed rail 520 is connected to the discharge port of the vibration plate 510, so that the fish eye pin 511, which is output from the vibration plate 510 and presents a desired direction, can enter the feed rail 520.
Specifically, the number of the detecting stations 531 may be set according to specific needs in application, for example, may be 8 or 12.
The target detection station 532 is a detection station 531 near the prism 542 and the camera 541. Thus, since the lens of the camera 541 faces the target detection station 532, the body image of the fisheye pin needle 511 of the target detection station 532 can be photographed in operation, and the camera 541 located at the second side of the triangular prism 542 can photograph the refraction image of the fisheye pin needle 511 refracted to the second side through the first side of the triangular prism 542, and since the first side is perpendicular to the second side, the body image of the fisheye pin needle 511 can be understood to be perpendicular to the refraction image, and different images of the fisheye pin needle 511 in two directions can be observed, so that the concentricity of the fisheye pin needle 511 can be detected.
In an alternative implementation, as shown in fig. 5, the apparatus further includes:
the first air blowing pipe 551 is arranged at one side of the rotary inspection table 530 close to the detection station 531, and the air outlet end of the first air blowing pipe 551 faces to a first air blowing detection station preset by the rotary inspection table 530;
the good product box 552 is arranged at the periphery of the rotary inspection table 530, and an inlet of the good product box 552 is close to the first blowing detection station;
the second air blowing pipe 553, wherein the second air blowing pipe 553 is arranged at one side of the rotary inspection bench 530 close to the detection station 531, and the air outlet end of the second air blowing pipe 553 faces to a second air blowing detection station preset by the rotary inspection bench 530;
the defective product box 554 is disposed at the periphery of the rotary inspection table 530, and the inlet of the defective product box 554 is close to the second blowing detection station.
Specifically, the first air blowing detection station and the second air blowing detection station are one of the detection stations 531, and the specific setting positions of the first air blowing detection station and the second air blowing detection station are set according to the placement positions of the good product boxes 552 and the defective product boxes 554, so that the first air blowing detection station is close to the good product boxes 552, and the second air blowing detection station is close to the defective product boxes 554.
It will be appreciated that good products may be blown into the good product boxes 552 by the first air blow pipes 551 and bad products may be blown into the bad product boxes 554 by the second air blow pipes 553.
In an alternative implementation, as shown in fig. 5, the number of the detecting stations 531 is at least three, and at least three detecting stations 531 are a target detecting station, a first blowing detecting station, and a second blowing detecting station.
It can be appreciated that the target detection station, the first blowing detection station and the second blowing detection station respectively occupy one detection station 531, so that the detection stations 531 corresponding to the target detection station, the first blowing detection station and the second blowing detection station are not overlapped, and the efficiency of detecting defective products can be effectively improved.
In an alternative implementation manner, as shown in fig. 6, a structure diagram of a clamping jaw 560 is provided in the detection station 531, the clamping jaw 560 includes a first clamping portion 561, a second clamping portion 562, and an air cylinder 563, the first clamping portion 561 and the second clamping portion 562 are disposed on the air cylinder 563, the air cylinder 563 drives the first clamping portion 561 and the second clamping portion 562 to move relatively, and the fish eye pin needle 511 is clamped in the detection station 531 by the first clamping portion 561 and the second clamping portion 562.
It can be appreciated that the cylinder 563 drives the first clamping portion 561 and the second clamping portion 562 to move relatively, and when the fisheye pin needle 511 needs to be clamped, the cylinder 563 can be controlled to move relatively until the fisheye pin needle 511 is clamped and then stop moving relatively, so as to maintain the clamping state of the fisheye pin needle 511.
In an alternative implementation, as shown in fig. 5, the triangular prism 542 has a cross-section that is an isosceles right triangle.
It can be understood that the cross section of the prism 542 is an isosceles triangle, so that, on one hand, the refraction image of the fish-eye pin needle 511 obtained by refraction of the prism 542 is perpendicular to the body image of the fish-eye pin needle 511, so that the concentricity of the fish-eye pin needle 511 is easier to calculate by the refraction image and the body image, and on the other hand, the angles formed by the first side, the second side and the third side of the prism 542 are 45 degrees (i.e. isosceles), so that the image obtained by refraction of the prism 542 is clearer and is easier to capture by the camera 541.
The foregoing has described in detail the technical solutions provided herein, and specific examples have been used to illustrate the principles and embodiments of the present application, where the above examples are only used to help understand the methods and core ideas of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the one or more processes and-
Or a block diagram of one or more of the functions specified in the block diagram.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (10)
1. The method for detecting the concentricity of the fish eye pin needle is characterized by comprising the following steps of:
placing a fish eye pin needle in a vibration disc, and controlling the vibration disc to enable the fish eye end of the fish eye pin needle to be far away from the vibration disc for vibration;
the fish eye pin needle of which the fish eye end is far away from the vibration disc is conveyed to a detection station on a rotary inspection table through a feeding track;
after the detection station is detected to receive the fisheye pin needle, controlling a clamping jaw to clamp the fisheye pin needle and rotating the rotary inspection bench;
when the fish eye pin needle rotates to a target detection station, shooting a body image of the fish eye pin needle and a refraction image of the fish eye pin needle refracted through a prism;
detecting a first offset of the body image in a preset x direction and a second offset of the refraction image in a preset y direction;
and calculating the concentricity of the fish-eye pin needle according to the first offset and the second offset.
2. The method of claim 1, wherein calculating the concentricity of the fish-eye pin needle based on the first offset and the second offset comprises:
calculating the square sum of the first offset and the second offset;
and calculating the arithmetic square root of the square sum to obtain the concentricity of the fish eye pin needle.
3. The method for detecting concentricity of fish-eye pin needle according to claim 1, wherein the capturing of the body image of the fish-eye pin needle and the refraction image of the fish-eye pin needle refracted by the triangular prism comprises:
shooting an image of the fish eye pin needle body through a camera;
and shooting a refraction image of the fish eye pin needle through the camera, wherein the refraction image is perpendicular to the body image.
4. The method for detecting concentricity of a fisheye pin needle according to claim 1, wherein after detecting that the fisheye pin needle is received by the detection station, controlling a clamping jaw to clamp the fisheye pin needle and rotate the rotation inspection bench comprises:
after the detection station is detected to receive the fisheye pin needle, controlling a clamping jaw to clamp the fisheye pin needle;
rotating the rotary inspection bench to enable the fish eye pin needle to rotate a target angle each time, wherein the target angle is an angle value obtained by dividing 360 degrees by the number of inspection stations.
5. The method for detecting the defective products of the fish eye pin needles is characterized by comprising the following steps of:
the method for detecting concentricity of fish-eye pin needle according to claim 1 or 2, wherein the concentricity of the fish-eye pin needle is calculated;
obtaining the height of the fisheye pin needle according to the height of the body image of the fisheye pin needle;
judging whether the concentricity of the fish eye pin needle is within a preset concentricity threshold range or not, and whether the height of the fish eye pin needle is within a preset height threshold range or not:
if the concentricity of the fish-eye pin needle is within a preset concentricity threshold range and the height of the fish-eye pin needle is within a preset height threshold range, blowing the fish-eye pin needle into a good product box through a first air blowing pipe;
if the concentricity of the fish eye pin needle exceeds the concentricity threshold range or the height of the fish eye pin needle exceeds the height threshold range, the fish eye pin needle is blown into the defective product box through a second air blowing pipe.
6. The utility model provides a detection device of fish eye pin needle concentricity which characterized in that includes:
the vibration disc is used for placing the fish eye pin needle;
the feeding hole of the feeding rail is connected with the discharging hole of the vibration disc;
the fish eye pin needle enters the detection station through the discharge hole of the feeding track;
the detection module comprises a camera and a prism, wherein a lens of the camera faces towards a target detection station and the prism, a first side face and a second side face of the prism face towards the target detection station and the lens of the camera respectively, and the first side face and the second side face are vertical.
7. The device for detecting concentricity of a fish-eye pin needle according to claim 6, further comprising:
the first air blowing pipe is arranged on one side, close to the detection station, of the rotary inspection table, and the air outlet end of the first air blowing pipe faces to a first air blowing detection station preset by the rotary inspection table;
the good product box is arranged at the periphery of the rotary inspection table, and the inlet of the good product box is close to the first blowing detection station;
the second air blowing pipe is arranged on one side, close to the detection station, of the rotary inspection table, and the air outlet end of the second air blowing pipe faces to a second air blowing detection station preset by the rotary inspection table;
defective product box, defective product box set up in the periphery of rotatory checkout stand, just the import of defective product box is close to the second detection station of blowing.
8. The device for detecting concentricity of fish eye pin needle according to claim 7, wherein the number of the detecting stations is at least three, and the at least three detecting stations are a target detecting station, a first blowing detecting station and a second blowing detecting station.
9. The fish-eye pin needle concentricity detection device according to claim 6, wherein a clamping jaw is arranged in the detection station, the clamping jaw comprises a first clamping portion, a second clamping portion and a cylinder, the first clamping portion and the second clamping portion are arranged on the cylinder, the cylinder drives the first clamping portion and the second clamping portion to move relatively, and the fish-eye pin needle is clamped in the detection station through the first clamping portion and the second clamping portion.
10. The device for detecting concentricity of fish-eye pin needle according to claim 6, wherein the cross section of the triangular prism is an isosceles right triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311870254.4A CN117781952A (en) | 2023-12-29 | 2023-12-29 | Method and device for detecting concentricity of fish-eye needle and method for detecting defective products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311870254.4A CN117781952A (en) | 2023-12-29 | 2023-12-29 | Method and device for detecting concentricity of fish-eye needle and method for detecting defective products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117781952A true CN117781952A (en) | 2024-03-29 |
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ID=90381485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311870254.4A Pending CN117781952A (en) | 2023-12-29 | 2023-12-29 | Method and device for detecting concentricity of fish-eye needle and method for detecting defective products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117781952A (en) |
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2023
- 2023-12-29 CN CN202311870254.4A patent/CN117781952A/en active Pending
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