CN113118053A

CN113118053A - Component screening device and component screening method

Info

Publication number: CN113118053A
Application number: CN202110276509.9A
Authority: CN
Inventors: 齐海兵; 安汝峤; 张峰
Original assignee: Zhejiang Smart Video Security Innovation Center Co Ltd
Current assignee: Zhejiang Smart Video Security Innovation Center Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-07-16

Abstract

The invention discloses a part screening device and a part screening method, wherein the part screening device comprises a feeding mechanism, a detection mechanism, a material moving mechanism and a blanking mechanism, the feeding mechanism is arranged between a material storage area and the feeding area, the feeding mechanism is used for conveying a part to be detected in the material storage area to the feeding area, the detection mechanism is provided with at least one detection position, the detection position is used for detecting the outer surface of the part to be detected, the material moving mechanism is used for moving the part to be detected in the feeding area to the detection position, the blanking mechanism is arranged between the detection mechanism and the blanking area, and the blanking mechanism is used for conveying the part which is detected to the blanking area. By utilizing the synergistic effect of the feeding mechanism, the detection mechanism, the material moving mechanism and the discharging mechanism, the automatic detection and screening of the parts are realized, the detection efficiency of the parts is further improved, and the production requirement is effectively met.

Description

Component screening device and component screening method

Technical Field

The invention relates to the technical field of automobile part detection, in particular to a part screening device and a part screening method.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The automobile is formed by assembling a plurality of parts, and each part needs to be correspondingly detected before being assembled, so that unqualified parts are prevented from being assembled on the automobile, and the overall quality of the automobile is ensured.

In the prior art, when detecting parts, the parts are usually subjected to spot inspection, and the parts subjected to spot inspection are detected by measuring, ultrasonic flaw detection and other modes, so that the efficiency of the detection mode is low, and the production requirement cannot be effectively met.

Disclosure of Invention

The invention aims to at least solve the problem of improving the detection efficiency of parts. The purpose is realized by the following technical scheme:

a first aspect of the present invention provides a component screening apparatus, including:

the feeding mechanism is arranged between the material storage area and the material loading area and is used for conveying the part to be detected in the material storage area to the material loading area;

the detection mechanism is provided with at least one detection position, and the detection position is used for detecting the outer surface of the part to be detected;

the material moving mechanism is used for moving the part to be detected positioned in the feeding area to the detection position;

and the blanking mechanism is arranged between the detection mechanism and the blanking area, and is used for conveying the inspected parts to the blanking area.

According to the part screening device, when parts are screened, the parts to be detected are placed in the material storage area, the parts to be detected in the material storage area are transferred to the material storage area through the feeding mechanism, the parts to be detected in the material storage area are transferred to the detection position of the detection mechanism through the material transfer mechanism, the detection mechanism detects the outer surface of the parts to be detected, and after detection is finished, the discharging mechanism sends the detected parts to the discharging area according to the detection result. By utilizing the synergistic effect of the feeding mechanism, the detection mechanism, the material moving mechanism and the discharging mechanism, the automatic detection and screening of the parts are realized, the detection efficiency of the parts is further improved, and the production requirement is effectively met.

In addition, the component screening device according to the present invention may further have the following additional features:

in some embodiments of the invention, the detection mechanism comprises:

the first detection assembly is provided with a first detection position and is used for detecting the peripheral surface of the part to be detected;

the second detection assembly is provided with a second detection position and is used for detecting the first end face of the part to be detected;

and/or a third detection assembly, wherein the third detection assembly is provided with a third detection position and is used for detecting the second end surface of the part to be detected.

In some embodiments of the invention, where the detection mechanism comprises a first detection assembly, the first detection assembly comprises:

a first table;

the first clamping piece is rotatably arranged on the first workbench, the first detection position is arranged on the first clamping piece, and the first detection position is used for placing the part to be detected;

the first image acquisition part is arranged on the first workbench and used for acquiring the image of the peripheral surface of the part to be detected;

the first illumination piece is arranged on the first workbench and used for supplementing light to the component to be detected positioned on the first detection position;

the driving piece is in transmission connection with the first clamping piece and is used for driving the first clamping piece to rotate.

In some embodiments of the invention, where the detection mechanism comprises a second detection assembly, the second detection assembly comprises:

a second table;

the second clamping piece is arranged on the second workbench, the second detection position is arranged on the second clamping piece, and the second detection position is used for placing the part to be detected;

the second image acquisition part is arranged on the second workbench and used for acquiring a first end face image of the part to be detected;

and the second illuminating piece is arranged on the second workbench and used for supplementing light to the part to be detected, which is positioned on the second detection position.

In some embodiments of the invention, the second illuminating part is a first lamp ring, the second image capturing part and the second clamping part are respectively disposed on two opposite sides of the first lamp ring, and a light emitting surface of the first lamp ring faces the second detection position.

In some embodiments of the invention, where the detection mechanism comprises a third detection assembly, the third detection assembly comprises:

a third working table;

the third image acquisition part is arranged on the third workbench and used for acquiring a second end surface image of the part to be detected;

and the third illuminating piece is arranged on the third workbench and used for supplementing light to the part to be detected, which is positioned on the third detection position.

In some embodiments of the invention, the third illuminating element is a second lamp ring, the third image capturing element is disposed on one side of the second lamp ring, and a light emitting surface of the second lamp ring faces the third detection position.

In some embodiments of the present invention, the material moving mechanism includes a support, a first manipulator, a second manipulator and a third manipulator, the support is movably disposed between the feeding area and the detection mechanism, the first manipulator is disposed on the support and is used for moving the component to be detected from the feeding area to the first detection position, the second manipulator is disposed on the support and is used for moving the component to be detected from the first detection position to the second detection position, and the third manipulator is disposed on the support and is used for moving the component to be detected from the second detection position to the third detection position;

and/or the blanking mechanism comprises a fourth manipulator, and the fourth manipulator is used for placing the part to be detected to the third detection position and transferring the detected part to the blanking area.

In some embodiments of the present invention, the component screening apparatus includes a qualified bin, a rechecking bin, and an unqualified bin disposed in the blanking area, and the fourth manipulator transfers the inspected component to the qualified bin, the rechecking bin, or the unqualified bin according to a detection result.

A second aspect of the present invention provides a component screening method implemented according to the component screening apparatus described above, including the steps of:

acquiring an outer peripheral surface image;

acquiring an end face image;

converting the peripheral surface image into a first comparison value, and comparing the first comparison value with a first threshold range to obtain a first comparison result;

converting the end face image into a second comparison value, and comparing the second comparison value with a second threshold range to obtain a second comparison result;

and judging the quality of the part according to at least one of the first comparison result and the second comparison result.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a schematic structural view of a component screening apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first detection assembly of the component part screening apparatus shown in FIG. 1;

FIG. 3 is a schematic structural view of a second detecting component of the component part screening apparatus shown in FIG. 1;

FIG. 4 is a schematic structural view of a third detecting component of the component part screening apparatus shown in FIG. 1;

fig. 5 schematically shows a flow chart of a part screening method according to an embodiment of the present invention.

The reference numbers are as follows:

100 is a component screening device;

200 is a part to be detected;

300 is a detected part;

10, a feeding mechanism;

the device comprises a vibrating disk 11, a storage part 12, a storage area 121, a conveying part 13, a loading area 131, a loading manipulator 14 and a baffle 15, wherein the vibrating disk is a vibrating disk;

20 is a detection mechanism;

21 is a first detecting component, 211 is a first image collecting part, 212 is a first clamping part, 213 is a first illuminating part, 214 is a first workbench, 215 is a driving part, and 216 is a first supporting rod;

22 is a second detection assembly, 221 is a second worktable, 222 is a second image acquisition part, 223 is a second illumination part, 224 is a second clamping part, 225 is a second supporting rod, 226 is a first connecting part, and 227 is a second connecting part;

23 is a third detection assembly, 231 is a third image acquisition part, 232 is a third illuminating part, and 233 is a third workbench;

30 is a material moving mechanism;

31 is a support, 32 is a first manipulator, 33 is a second manipulator, and 34 is a third manipulator;

40 is a blanking mechanism;

41 is a fourth manipulator, 42 is a vertical column, 43 is a cross beam, and 44 is a third connecting piece;

50 is a qualified stock bin;

60 is a rechecking bin;

and 70 is a defective bin.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 4, according to an embodiment of the present invention, a component screening apparatus 100 is provided, the component screening apparatus 100 includes a feeding mechanism 10, a detecting mechanism 20, a transferring mechanism 30 and a discharging mechanism 40, the feeding mechanism 10 is disposed between a stock area 121 and a feeding area 131, the feeding mechanism 10 is used for conveying a component 200 to be inspected in the stock area 121 to the feeding area 131, the detecting mechanism 20 is provided with at least one detecting position for detecting an outer surface of the component 200 to be inspected, the transferring mechanism 30 is used for transferring the component 200 to be inspected in the feeding area 131 to the detecting position, the discharging mechanism 40 is disposed between the detecting mechanism 20 and the discharging area, and the discharging mechanism 40 is used for conveying the inspected component 300 to the discharging area.

Specifically, when parts are screened, the part 200 to be inspected is placed in the stock area 121, the part 200 to be inspected in the stock area 121 is transferred to the feeding area 131 through the feeding mechanism 10, the part 200 to be inspected in the feeding area 131 is transferred to the detection position of the detection mechanism 20 through the material transferring mechanism 30, the detection mechanism 20 detects the outer surface of the part 200 to be inspected, and after the detection is finished, the blanking mechanism 40 sends the part 300 which is detected to the blanking area according to the detection result. By utilizing the synergistic effect of the feeding mechanism 10, the detection mechanism 20, the material moving mechanism 30 and the discharging mechanism 40, the automatic detection and screening of the parts are realized, the detection efficiency of the parts is further improved, and the production requirement is effectively met.

It should be understood that the stock area 121, the detection mechanism 20 and the blanking area are sequentially arranged, wherein the feeding mechanism 10 is arranged between the stock area 121 and the detection mechanism 20, the blanking mechanism 40 is arranged between the detection mechanism 20 and the blanking area, the parts 200 to be detected are placed in the stock area 121 in batches, during detection, the parts 200 to be detected in the stock area 121 are sequentially conveyed to the stock area 131, the conveying mechanism sequentially conveys the parts 200 to be detected in the stock area 131 to the detection position of the detection mechanism 20, and after detection is finished, the blanking mechanism 40 conveys the detected parts 300 on the detection position to the blanking area.

It should be noted that the component screening apparatus 100 of the present invention further includes a controller, the controller is respectively in communication connection with the feeding mechanism 10, the material moving mechanism 30, the detecting mechanism 20 and the discharging mechanism 40, the controller controls the feeding mechanism 10 to perform feeding, and controls the moving mechanism to transfer the component 200 to be inspected to the detecting position of the detecting mechanism 20, the detecting mechanism 20 feeds back the detection result to the controller, the controller determines the quality (qualified, required to be re-inspected and unqualified) of the component 200 to be inspected according to the processes of calculation, comparison and judgment, and the controller controls the discharging mechanism 40 to respectively store the inspected components 300 according to the quality of the determined position, thereby further realizing the screening of the components.

In addition, the feeding mechanism 10 includes a vibration tray 11, a conveying member 13, a baffle 15 and a feeding manipulator 14, wherein a feeding port of the vibration tray 11 is communicated with the storage member 12, a discharging port of the vibration tray 11 is connected with one end of the conveying member 13 (conveying chain, etc.), the baffle 15 isolates a part (can only accommodate one part 200 to be inspected) at the other end of the conveying member 13 as a feeding position, and the feeding manipulator 14 is arranged near the baffle 15. During operation, the part 200 of examining in the storage 12 enters into vibration dish 11, through vibration dish 11 with mixed and disorderly examine the part 200 of examining and sort according to setting for the gesture, after the ejection of compact part of vibration dish 11 enters into transport 13, examine the required gesture of part 200 when detecting, after examining part 200 and arriving baffle 15 position along transport 13, material loading manipulator 14 takes out the part 200 of examining from one side of baffle 15 through removing (lift action and translation action combine together) and places the opposite side of baffle 15 again, make and examine part 200 and enter into material loading district 131. Through the structure of feed mechanism 10 to guaranteed to wait to examine part 200 and be in the orderly state, thereby improved the material loading speed of waiting to examine part 200, and then promoted the efficiency that spare part detected.

In addition, when detecting the parts, detection mechanism 20 detects the surface of parts comprehensively to avoid the surface of parts to appear the defect of gouging, dirty, foreign matter and mar, and then guaranteed that the quality of parts satisfies the assembly demand, make the quality of whole car assembly obtain the assurance.

The detecting mechanism 20 includes one detecting position or a plurality of detecting positions (two or more), the number of detecting positions is specifically set according to the shape of the part to be screened, and in the present invention, the part to be inspected 200 is described in detail as an example of a cylindrical part.

Further, as shown in fig. 1 to 4, the detecting mechanism 20 includes a first detecting component 21, a second detecting component 22 and a third detecting component 23, the first detecting component 21 is provided with a first detecting position, the first detecting component 21 is used for detecting the outer peripheral surface of the part 200 to be detected, the second detecting component 22 is provided with a second detecting position, the second detecting component 22 is used for detecting the first end surface of the part 200 to be detected, the third detecting component 23 is provided with a third detecting position, and the third detecting component 23 is used for detecting the second end surface of the part 200 to be detected. Specifically, the part 200 to be inspected is a cylindrical part, and therefore, the part 200 to be inspected includes an outer peripheral surface (outer side wall of the cylindrical part), a first end surface (top end surface of the cylindrical part) and a second end surface (bottom end surface of the cylindrical part), when the part 200 to be inspected is screened, the feeding mechanism 10 transfers the part 200 to be inspected from the stock area 121 to the feeding area 131, the transferring mechanism 30 transfers the part 200 to be inspected in the feeding area 131 to a first detection position of the first detection assembly 21, the first detection assembly 21 detects the outer peripheral surface of the part 200 to be inspected, when the detection of the outer peripheral surface of the part 200 to be inspected is completed, the transferring mechanism 30 transfers the part 200 to be inspected to a second detection position of the second detection assembly 22, the second detection assembly 22 detects the first end surface of the part 200 to be inspected, and when the detection of the first end surface of the part 200 is completed, the transferring mechanism 30 transfers the part 200 to a third detection position of the third detection assembly 23, the third detecting component 23 detects the second end face of the to-be-detected component 200, and when the second end face of the to-be-detected component 200 is detected, the blanking mechanism 40 transfers the detected component 300 (detected component) to the blanking area, thereby completing the automatic detection of the component.

It should be noted that the first detecting component 21, the second detecting component 22, and the third detecting component 23 are respectively in communication connection with a controller of the component screening apparatus 100, information on the outer peripheral surface of the component 200 to be inspected, which is detected by the first detecting component 21, information on the first end surface of the component 200 to be inspected, which is detected by the second detecting component 22, and information on the second end surface of the component 200 to be inspected, which is detected by the third detecting component 23, are all fed back to the controller, the controller respectively performs logical calculation on the information detected by the three detecting components, compares the information with the registered data, sends a control instruction to the blanking mechanism 40 according to the comparison result, and the blanking mechanism 40 transfers the inspected component 300 to different positions in the blanking area according to the control instruction, so as to realize screening and classification of the components.

Further, as shown in fig. 1 and fig. 2, the first detecting assembly 21 includes a first worktable 214, a first clamping member 212, a first image collecting member 211, a first illuminating member 213 and a driving member 215, the first clamping member 212 is rotatably disposed on the first worktable 214, the first detecting position is disposed on the first clamping member 212, the first detecting position is used for placing the component 200 to be detected, the first image collecting member 211 is disposed on the first worktable 214 and is used for collecting the image of the outer peripheral surface of the component 200 to be detected, the first illuminating member 213 is disposed on the first worktable 214, the first illuminating member 213 is used for supplementing light to the component to be detected located on the first detecting position, and the driving member 215 is in transmission connection with the first clamping member 212 and is used for driving the first clamping member 212 to rotate. Specifically, the first detecting position is disposed on the first clamping member 212, the first clamping member 212 is disposed on the first worktable 214 and can rotate relative to the first worktable 214, the first image capturing member 211 and the first illuminating member 213 are disposed on the same side of the first worktable 214 and respectively close to the first clamping member 212, and the driving member 215 is disposed on the first worktable 214 and is in transmission connection with the first clamping member 212. When the outer peripheral surface of the part 200 to be inspected is inspected, the transfer mechanism places the part 200 to be inspected at the first inspection position, the driving member 215 drives the first chucking member 212 to rotate, during the rotation of the member to be inspected 200, the first illuminating member 213 is turned on so that the outer circumferential surface of the member to be inspected 200 is sufficiently lighted, the first image pickup member 211 picks up an image of the outer circumferential surface, and transmits the collected peripheral surface image back to the controller of the component screening apparatus 100, the controller converts the peripheral surface image into a first comparison value, and compares the first comparison value with a first threshold range pre-stored in the controller, and when the first comparison value is within the first threshold range, and judging that the peripheral surface of the part is qualified, and judging that the peripheral surface of the part is unqualified when the first comparison value is out of the first threshold value range, thereby realizing the screening of the part.

It should be noted that the first retaining member 212 is an inverted T-shaped member, the large end of the T-shaped member is rotatably disposed on the first worktable 214, the component to be inspected 200 is sleeved on the stepped structure of the T-shaped member, and the positioning of the component to be inspected 200 is realized by using the stepped structure of the T-shaped member. Meanwhile, the driving member 215 is a motor and is disposed on one side of the first worktable 214 far away from the first clamping member 212, a rotating shaft of the motor penetrates through the first worktable 214 and is in transmission connection with the first clamping member 212, and the motor drives the first clamping member 212, which is a T-shaped component, to rotate around its own axis, so as to drive the component 200 to be inspected to rotate, and further, in the rotating process of the component to be rotated, the first image acquisition member 211 performs image acquisition on the whole peripheral surface of the component 200 to be inspected, so that the image acquisition precision is improved, and the screening precision is improved.

In addition, first image acquisition piece 211 is first camera, first camera is high-speed camera, thereby can guarantee to wait to examine the definition of examining part 200 pivoted in-process to its image acquisition, carry out image acquisition to the defect (the bruise of appearance of outer peripheral face simultaneously, dirty, foreign matter and mar), and the image that will gather passes back to the controller, first illumination piece 213 is first LED lamp, the part 200 is waited to examine to the illumination terminal surface orientation of this first LED lamp, make to examine the part 200 and be in the environment that light is sufficient, further improved image acquisition's quality, make the precision of screening obtain the improvement.

In addition, the first image capturing part 211 is arranged on the first worktable 214 in an adjustable manner, that is, the height and the angle of the first image capturing part 211 are adjustable, and the height and the angle of the first image capturing part are adjusted, so that the image capturing of the part to be inspected and the image capturing requirements of different parts are ensured. Meanwhile, the first lighting part 213 is arranged on the first workbench 214 through the first supporting rod 216, the first supporting rod 216 is fixedly connected with the first workbench 214, the first lighting part 213 can adjust the height and the angle relative to the first supporting rod 216, and the height and the angle of the first lighting part 213 are adjusted, so that the part 200 to be inspected can obtain a sufficient light source, the first image acquisition part 211 can be ensured to obtain a clear image, and the screening quality of parts is improved.

Further, as shown in fig. 1 and fig. 3, the second detection assembly 22 includes a second workbench 221, a second clamping member 224, a second image capturing member 222, and a second illuminating member 223, the second clamping member 224 is disposed on the second workbench 221, the second detection position is disposed on the second clamping member 224, the second detection position is used for placing the component 200 to be detected, the second image capturing member 222 is disposed on the second workbench 221 and is used for capturing the first end face image of the component 200 to be detected, the second illuminating member 223 is disposed on the second workbench 221, and the second illuminating member 223 is used for supplementing light to the component to be detected on the second detection position. Specifically, the second detection position is disposed on the second clamping member 224, the second clamping member 224 is disposed on the second worktable 221, and the second image capturing element 222 and the second illuminating element 223 are disposed on the same side of the second worktable 221 and respectively close to the second clamping member 224. When the first end face of the part 200 to be inspected is inspected, the transfer mechanism places the part 200 to be inspected on a second inspection position, the second illuminating part 223 is turned on, so that the first end face of the part 200 to be inspected obtains sufficient light, the second image acquisition part 222 acquires an image of the first end face, the acquired image of the first end face is transmitted back to the controller of the part screening device 100, the controller converts the image of the first end face into a second comparison value, the second comparison value is compared with a second threshold range prestored in the controller, when the second comparison value is within the second threshold range, the first end face of the part is judged to be qualified, and when the second comparison value is outside the second threshold range, the first end face of the part is judged to be unqualified, so that the part is screened.

It should be noted that the second detecting assembly 22 further includes a second supporting rod 225, a first connecting member 226 and a second connecting member 227, wherein the second supporting rod 225 is fixedly connected to the second workbench 221 and vertically arranged relative to the second workbench 221, the first connecting member 226 and the second connecting member 227 are respectively arranged on the second supporting rod 225, the second clamping member 224 is arranged on the first connecting member 226, the second image capturing member 222 and the second illuminating member 223 are respectively arranged on the second connecting member 227, a receiving slot is arranged at the top of the second clamping member 224, the receiving slot is a second detecting position, the second image capturing member 222 and the second illuminating member 223 are both arranged above the second clamping member 224, when the component to be detected 200 is arranged in the receiving slot, the second image capturing member 222 and the second illuminating member 223 both face the first end face (top end face) of the component to be detected 200, the second illuminating member 223 is used for supplementing light to the first end face, the second illuminator 223 performs image acquisition on the first end surface, so as to improve the detection precision of the second detection assembly 22 on the to-be-detected component 200.

In addition, the first connecting piece 226 is arranged on the second supporting rod 225 in an adjustable manner, and the position of the first connecting piece 226 on the second supporting rod 225 is adjusted, so that the adjustment of the position of the second clamping piece 224 can be met, the detection requirement on the part 200 to be detected is further met, meanwhile, the second connecting piece 227 is arranged on the second supporting rod 225 in an adjustable manner, and the position of the second connecting piece on the second supporting rod 225 is adjusted, so that the adjustment of the positions of the second image acquisition piece 222 and the second illuminating piece 223 is met, the second illuminating piece 223 can be adjusted in position relative to the second connecting piece 227, and the detection requirement of the second detection assembly 22 on the part 200 to be detected is further guaranteed by adjusting the position of the second illuminating piece 223.

In addition, second image acquisition spare 222 is the second camera, the second camera can carry out image acquisition to the defect (gouge, dirty, foreign matter and mar) of the appearance of first terminal surface, and pass back the image of gathering to the controller, second illumination spare 223 is the second LED lamp, the part 200 is examined to the illumination terminal surface orientation of this second LED lamp, make to examine the part 200 and be in the environment that light is sufficient, further improve image acquisition's quality, make the precision of screening obtain the improvement.

Further, as shown in fig. 3, the second illuminating member 223 is a first light ring, the second image capturing member 222 and the second clamping member 224 are respectively disposed on two opposite sides of the first light ring, and a light emitting surface of the first light ring faces the second detecting position. Specifically, first lamp ring is located the top that first card was held 212, and first lamp ring and first card are held a 212 coaxial setting, second image acquisition piece 222 sets up and keeps away from the one side that the second card was held 224 at first lamp ring, second image acquisition piece 222 treats the first terminal surface of examining part 200 and carries out image acquisition through the hollow position of first lamp ring, set up to first lamp ring through with second illumination piece 223, thereby make the first terminal surface of examining part 200 and can obtain sufficient light, and then guarantee that the image information that second image acquisition piece 222 gathered is more clear, make the precision of screening obtain improving.

Further, as shown in fig. 1 and 4, the third detecting assembly 23 includes a third worktable 233, a third image capturing element 231 and a third illuminating element 232, the third image capturing element 231 is disposed on the third worktable 233 and is used for capturing a second end face image of the component 200 to be detected, the third illuminating element 232 is disposed on the third worktable 233, and the third illuminating element 232 is used for supplementing light to the component to be detected on the third detecting position. Specifically, the third detection position is disposed on the third detection assembly 23, the third image capturing element 231 and the third lighting element 232 are disposed below the third detection position, when the to-be-detected component 200 is at the third detection position, the third lighting element 232 supplements light to the second end face of the to-be-detected component 200, the third image capturing element 231 captures an image of the second end face, and transmits the captured second end face image back to the controller of the component screening apparatus 100, the controller converts the second end face image into a third comparison value, and compares the third comparison value with a third threshold range prestored in the controller, when the third comparison value is within the third threshold range, the second end face of the component is determined to be qualified, when the third comparison value is outside the third threshold range, the second end face of the component is determined to be unqualified, thereby realizing the screening of the parts.

It should be noted that the third image acquisition part 231 is the third camera, the third camera can carry out image acquisition to the defect (gouge, dirty, foreign matter and mar) of the appearance of second terminal surface, and pass back the image of gathering to the controller, the third illumination part 232 is the third LED lamp, the part 200 is examined to the illumination terminal surface orientation of this third LED lamp, make to examine the part 200 and be in the environment that light is sufficient, the quality of image acquisition has further been improved, make the precision of screening obtain the improvement.

Further, as shown in fig. 4, the third illuminating member 232 is a second light ring, the third image capturing member 231 is disposed at one side of the second light ring, and a light emitting surface of the second light ring faces the third detecting position. Specifically, a notch is formed in the third worktable 233, a third illuminating part 232 of the second lamp ring is disposed on one side of the third worktable 233, a hollow position of the second lamp ring is disposed corresponding to the notch, a third image collecting part 231 is disposed on the third worktable 233 and is located on the opposite side of the third worktable 233 from the second lamp ring, an image collecting end of the third image collecting part 231 is disposed corresponding to the notch, a third detecting position is disposed above the second lamp ring and is disposed corresponding to the hollow position of the second lamp ring, when the to-be-detected component 200 is disposed at the third detecting position, the second lamp ring is charged, and the third image collecting part 231 collects images of a second end surface (bottom end surface) of the to-be-detected component 200, so as to detect the second end surface of the to-be-detected component 200.

It should be understood that the third image capturing element 231 is disposed on the side of the second light ring away from the third detecting position, and when the second end surface of the to-be-detected component 200 is detected, the posture of the to-be-detected component 200 does not need to be adjusted, so that the detecting time is shortened, and the detecting efficiency is improved.

Further, as shown in fig. 1, the material moving mechanism 30 includes a supporting member 31, a first manipulator 32, a second manipulator 33 and a third manipulator 34, the supporting member 31 is movably disposed between the loading area 131 and the detecting mechanism 20, the first manipulator 32 is disposed on the supporting member 31 and is used for moving the component 200 to be inspected from the loading area 131 to the first detecting position, the second manipulator 33 is disposed on the supporting member 31 and is used for moving the component 200 to be inspected from the first detecting position to the second detecting position, and the third manipulator 34 is disposed on the supporting member 31 and is used for moving the component 200 to be inspected from the second detecting position to the third detecting position. Specifically, first manipulator 32, second manipulator 33 and third manipulator 34 interval set up on support 31, when treating the part 200 of examining and transferring, first manipulator 32 will wait to examine the part 200 and transfer to first detection position from material loading district 131 on, second manipulator 33 will wait to examine the part 200 and transfer to the second detection position from first detection position on, third manipulator 34 will wait to examine the part 200 and transfer to the third detection position from the second detection position on, support 31 removes once promptly and can realize waiting to examine the switching of part 200 on different detection positions to the efficiency of detection has been improved.

It should be noted that the supporting member 31 can move and lift (the movement and the lifting of the supporting member 31 are driven by a motor or an air cylinder, etc.), and each manipulator clamps or releases the to-be-inspected component 200 at the corresponding inspection position through the cooperation of the movement and the lifting, so as to ensure the accurate transfer of the to-be-inspected component 200.

Further, as shown in fig. 4, the blanking mechanism 40 includes a fourth robot 41, and the fourth robot 41 is configured to place the part to be inspected 200 at the third inspection position and transfer the inspected part 300 to the blanking area. Specifically, the third detection position is located above the third illuminating part 232, when the third manipulator 34 transfers the part 200 to be detected to the third detection position, the fourth manipulator 41 clamps the part 200 to be detected, at this time, the third manipulator 34 is separated from the part 200 to be detected, the fourth manipulator 41 places the part 200 to be detected at the third detection position, the third illuminating part 232 and the third image collecting part 231 are respectively started to realize image collection on the second end face of the part 200 to be detected, and after the third detection assembly 23 finishes detecting the part 200 to be detected, the fourth manipulator 41 transfers the part 300 to be detected to the blanking area according to the screening result, so as to realize screening of the parts.

It should be noted that the blanking mechanism 40 further includes an upright post 42, a cross beam 43 and a third connecting member 44, wherein the upright post 42 is disposed close to the third workbench 233 and is vertically disposed relative to the third workbench 233, the cross beam 43 is disposed on the upright post 42 and can be lifted relative to the upright post 42 (driven by a motor or an air cylinder, etc.), the fourth manipulator 41 is disposed on the cross beam 43 through the third connecting member 44, the third connecting member 44 can be moved on the cross beam 43 (driven by a motor or an air cylinder, etc.), the fourth manipulator 41 can be lifted relative to the connecting member (driven by a motor or an air cylinder, etc.), the position of the fourth manipulator 41 is changed through the movement of the cross beam 43, the third connecting member 44 and the fourth manipulator 41, so that the position change of the component to be detected 200 and the blanking operation of the detected component 300 are realized.

In addition, the detection mechanism 20 may further be provided with a three-dimensional imaging device, and the three-dimensional imaging device is used to obtain depth information of the surface of the product, such as gouges or scratches, and the detection of the depth is used to further improve the detection accuracy.

Further, as shown in fig. 1, the component screening apparatus 100 includes a qualified bin 50, a rechecking bin 60, and an unqualified bin 70, which are disposed in the blanking area, and the fourth manipulator 41 transfers the inspected component 300 to the qualified bin 50, the rechecking bin 60, or the unqualified bin 70 according to the detection result. Specifically, the qualified bin 50, the rechecking bin 60 and the unqualified bin 70 are adjacently arranged in the blanking area, and after the parts are detected by the detection mechanism 20, the blanking mechanism 40 transfers the detected parts 300 to corresponding bin positions according to the detection result, so that the classification operation of the parts is realized.

As shown in fig. 1 to 4, the present invention also proposes a component parts screening method implemented by the above component parts screening apparatus 100, in the present invention, a component part 200 to be inspected is a cylindrical component part, and the following description is made taking the cylindrical component part as an example, and the component parts screening method includes the steps of:

s1: an outer peripheral surface image is acquired. Specifically, the material moving mechanism 30 moves the to-be-detected component 200 from the feeding area 131 to a first detection position of the first clamping member 212, the driving member 215 drives the first clamping member 212 to rotate, so as to drive the to-be-detected component 200 to rotate, in the rotating process of the to-be-detected component 200, the first illuminating member 213 supplements light to the outer peripheral surface of the to-be-detected component 200, the first image collecting member 211 collects the image of the outer peripheral surface of the to-be-detected component 200, and feeds the collected image of the outer peripheral surface back to the controller.

S2: end face image. Specifically, the material moving mechanism 30 sends the component 200 to be inspected to the second detection position of the second clamping member 224 from the first detection position, the second illuminating member 223 supplements light to the first end face of the component 200 to be inspected, the second image collecting member 222 collects the first end face image of the component 200 to be inspected, and feeds back the collected first end face image to the controller. After the first end face of the part 200 to be inspected is detected, the material moving mechanism 30 conveys the part 200 to be inspected to a third detection position from the second detection position, the third illuminating part 232 supplements light to the second end face of the part 200 to be inspected, the third image collecting part 231 collects a second end face image of the part 200 to be inspected, and feeds the collected second end face image back to the controller.

S3: the peripheral surface image is converted into a first comparison value, and the first comparison value is compared with a first threshold range to obtain a first comparison result. Specifically, the controller receives the outer peripheral surface image fed back by the first image capturing element 211, processes the outer peripheral surface image to obtain a first comparison value, compares the first comparison value with two end points of a first threshold range, and obtains a first comparison result according to whether the first comparison value is in the first threshold range.

S4: and converting the end face image into a second comparison value, and comparing the second comparison value with a second threshold value range to obtain a second comparison result. Specifically, the controller receives a first end face image fed back by the second image capturing element 222 and a second end face image fed back by the third image capturing element 231, the controller respectively processes the first end face image and the second end face image to obtain a second comparison value of the first end face and a second comparison value of the second end face, the two second comparison values are compared with two end points of a second threshold range, and a second comparison result is obtained according to whether the second comparison value is in the second threshold range.

S5: and judging the quality of the part according to at least one of the first comparison result and the second comparison result. Specifically, when the quality of the component is determined, the component may be determined to be a defective component when at least one of the first comparison result and the second comparison result does not satisfy the set condition.

Compared with the prior art, the part screening method provided by the invention realizes automation of part screening, and ensures the precision of part detection, thereby improving the precision of part screening.

In the invention, three comparison results are adopted for independent judgment, namely, when a first comparison value is out of a first threshold value range, the part is judged to be a disqualified part; when the second comparison value is out of the second threshold value range, the part is judged to be a unqualified part, and therefore the precision of detecting the part is improved.

In the present invention, the inspection standard used is based on the national standard GB/T15757-2002 eqv ISO8785:1998 term, definition and parameters of surface defects in product geometry measurement technical Specification (GPS), defines the process defects commonly seen in the production process, and determines the visual inspection standard of the first image capturing element, the second image capturing element and the third image capturing element.

When the part to be detected is detected, the outer surface image of the part to be detected is obtained through the first image acquisition part, the second image acquisition part and the second image acquisition part, the controller processes the outer surface image, when the surface of the part to be detected has defects, the defects can be measured through the pixels of the image (the first image acquisition part, the second image acquisition part and the second image acquisition part are cameras, the pixel size of the cameras is 3-7 micrometers), and the controller respectively compares the defects according to different defect conditions as follows:

1. when detecting gouge (gouge is a concave defect and comprises a groove, a scratch, a shrinkage cavity and the like) defects, taking 40 pixel points as a threshold range (a first threshold range and/or a second threshold range), when the defects are straight line and arc scratches with certain lengths, judging that the part to be detected is unqualified when the length of the defects is more than 40 pixel points, and when the defects are round or elliptical scratches with small sizes, judging that the sum of the major axis and the minor axis of the defects is more than 40 pixel points, judging that the part to be detected is unqualified.

2. When the defect of dirt (the dirt is regional defect or appearance defect) is detected, 500 pixel points are used as a threshold range (a first threshold range and/or a second threshold range), the size range of the defect can be limited by an ellipse, and when the length of the defect is larger than 500 pixel points, the part to be detected is judged to be unqualified.

3. When detecting the black point (the black point is an area defect, an appearance defect and contains spots and stripes) defect, taking 50 pixel points as a threshold range (a first threshold range and/or a second threshold range), limiting the size range of the defect by an ellipse, and judging that the part to be detected is unqualified when the sum of the major axis and the minor axis of the defect is more than 50 pixel points.

4. When the glue is detected to be a defect, the proportion of the glue defect in the existing fault data is 2.35%, and the method for detecting the black spot defect can be specifically referred.

5. When the scratch defect is detected, the proportion of the scratch defect in the existing fault data is 1.91%, and the method for detecting the gouge defect can be specifically referred.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A parts screening apparatus, comprising:

2. The parts screening apparatus according to claim 1, wherein the detecting mechanism includes:

3. The parts screening apparatus according to claim 2, wherein in a case where the detection mechanism includes a first detection member, the first detection member includes:

a first table;

4. The parts screening apparatus according to claim 2, wherein in a case where the detection mechanism includes a second detection member, the second detection member includes:

a second table;

5. The parts screening apparatus of claim 4, wherein the second illuminating member is a first lamp ring, the second image capturing member and the second retaining member are respectively disposed on opposite sides of the first lamp ring, and a light emitting surface of the first lamp ring faces the second detecting position.

6. The parts screening apparatus according to claim 2, wherein in a case where the detection mechanism includes a third detection member, the third detection member includes:

a third working table;

7. The parts screening apparatus of claim 6, wherein the third illuminating member is a second light ring, the third image capturing member is disposed on a side of the second light ring, and a light emitting surface of the second light ring faces the third detecting position.

8. The component screening apparatus according to any one of claims 2 to 7, wherein the material transferring mechanism includes a support member, a first manipulator, a second manipulator and a third manipulator, the support member is movably disposed between the loading area and the inspection mechanism, the first manipulator is disposed on the support member and is configured to transfer the component to be inspected from the loading area to the first inspection position, the second manipulator is disposed on the support member and is configured to transfer the component to be inspected from the first inspection position to the second inspection position, and the third manipulator is disposed on the support member and is configured to transfer the component to be inspected from the second inspection position to the third inspection position;

9. The component screening apparatus according to claim 8, wherein the component screening apparatus includes a qualified bin, a rechecking bin, and a non-qualified bin provided in the blanking area, and the fourth manipulator transfers the inspected component to the qualified bin, the rechecking bin, or the non-qualified bin according to a result of the detection.

10. A component parts screening method which is carried out by the component parts screening apparatus according to any one of claims 1 to 9, characterized by comprising the steps of:

acquiring an outer peripheral surface image;

acquiring an end face image;