CN110646423B

CN110646423B - Detection device

Info

Publication number: CN110646423B
Application number: CN201810669971.3A
Authority: CN
Inventors: 徐海东; 杨向明; 张福文; 李成松; 梁慧军; 谢江琦
Original assignee: Fulian Technology Shanxi Co Ltd
Current assignee: Fulian Technology Shanxi Co Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2022-06-14
Anticipated expiration: 2038-06-26
Also published as: CN110646423A

Abstract

The invention provides a detection device for detecting the glue blocking condition of a blind area in a workpiece, wherein a through hole leading to the blind area is arranged in the workpiece, the detection device comprises a conversion mechanism, a display screen, a base, a light source, a support arranged on the base, a positioning piece and a camera, the positioning piece is used for positioning the workpiece, the camera is arranged on the support, the light source is arranged on the camera, the camera and the light source face the positioning piece and are both positioned above the positioning piece, the conversion mechanism comprises a base and a plurality of lenses, a plurality of inclined planes are arranged on the peripheral wall of the base, one lens is correspondingly arranged on each inclined plane, the base is used for being placed in the workpiece, the lens can be aligned with the through hole of the workpiece, the display screen is arranged on the bracket and positioned at one side of the camera, and with camera electric connection, the light source illuminates the blind area through the through-hole with the help of the lens reflection, and the blind area of lens reflection work piece forms the image to the camera, and the camera transmits the image of blind area to the display screen in order to form the image of easily observing. The detection device realizes the detection of the blind area, and has simple structure and accurate and reliable detection result.

Description

Detection device

Technical Field

The invention relates to the field of detection, in particular to a detection device for detecting a blind area of a workpiece.

Background

The microphone of the mobile phone usually needs to be provided with at least one gauze on the side wall of the bottom case of the mobile phone. The support for bearing other elements is mounted on the side wall of the bottom shell of the mobile phone in an adhesive mode, and the gauze is located between the side wall of the bottom shell and the through hole of the support leading to the gauze. The existing condition that glue flows between the gauze and the bracket and blocks part of the gauze causes the acoustic test of the microphone to be unqualified. The inspection is required to be performed after the mobile phone bottom shell is processed. When the mobile phone bottom shell is inspected from the outer side, the gauze blocks the sight. When the side direction of the through hole is used for screening inspection, the through hole is blocked by other parts inside the bottom shell, so that a vision blind area exists. Therefore, people cannot directly check the blocking condition of the gauze in the blind area.

Disclosure of Invention

In view of the above situation, it is necessary to provide a detection device to solve the above problems.

The invention provides a detection device for detecting a blind area in a workpiece, wherein a corresponding through hole leading to the blind area is arranged in the workpiece, the detection device comprises a base, a camera, a light source, a supporting piece and a positioning piece, the supporting piece and the positioning piece are arranged on the base, the base is used for bearing the workpiece, the positioning piece is used for positioning the workpiece, the camera is arranged on the supporting piece, the light source is arranged on the camera, the camera and the light source face the positioning piece and are both positioned above the positioning piece, the detection device also comprises a conversion mechanism and a display screen, the conversion mechanism comprises a base and a plurality of lenses, a plurality of inclined planes are arranged on the peripheral wall of the base, each inclined plane is correspondingly provided with one lens, the base is used for being placed in the workpiece and can enable each lens to be aligned to the through hole corresponding to the blind area to be detected, the display screen is arranged on the supporting piece and is positioned on one side of the camera, the display screen is electrically connected with the camera, the light source illuminates the blind area through the through hole by means of reflection of the lens, the lens reflects the blind area to the camera to form an image of the blind area, the camera transmits the image of the blind area to the display screen, and the display screen is used for displaying the image of the blind area.

The detection device provided by the invention can enable the camera to shoot the image of the blind area by means of the reflection of the lens aligned with the through hole, and can observe a clear and amplified image of the blind area by means of the display screen. The detection device has the advantages of simple structure, easy operation and accurate and reliable detection result.

Drawings

Fig. 1 is a schematic perspective view of a detection apparatus according to an embodiment of the invention.

Fig. 2 is a perspective view of the shift mechanism shown in fig. 1.

FIG. 3 is a sectional view of the detecting unit shown in FIG. 1 taken along the line III-III.

Fig. 4 is a perspective view of the connection plate shown in fig. 1.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 3, the present invention provides a detecting device 100 for detecting the glue blocking condition of the blind area 205 in the workpiece 200. In the present embodiment, the workpiece 200 is a bottom case of a mobile phone, but is not limited thereto. The workpiece 200 includes a floor 201 and sidewalls 202. A plurality of gauzes 203 are provided on the side walls 202 of the workpiece 200. In this embodiment, the number of the mesh yarns is two. The side of each gauze 203 facing the inside of the workpiece 200 is provided with a bracket 204 which is glued to the side wall 202. The detecting device 100 is used for detecting whether glue (not shown) flowing between the bracket 204 and the gauze 203 blocks the gauze 203. The bracket 204 is provided with a through hole 2041, and the through hole 2041 is communicated with the gauze 203 and the inside of the workpiece 200. Other components on the workpiece 200 block the view of the gauze 203 through the through hole 2041 to form a blind spot 205 that cannot be directly observed.

Referring to fig. 1, the detecting device 100 includes a base 10, a supporting member 20, a positioning member 30, a camera 50, a light source 60, a converting mechanism 40, and a display screen 70. The base 10 is used for carrying a workpiece 200. The positioning member 30 is disposed on the base 10. In this embodiment, the positioning member 30 is an L-shaped plate, but is not limited thereto. The positioning member 30 is used to abut against both side walls 202 of the workpiece 200 to position the workpiece 200. The support 20 is disposed on the base 10. Camera 50 is positioned on support 20 and aligned with the inspection station. In this embodiment, the camera 50 is an industrial camera and the light source 60 is a ring light source 60. The light source 60 is mounted on the camera 50. The camera 50 and the light source 60 are directed towards the positioning member 30 and are both located above the positioning member 30. The conversion mechanism 40 is configured to be detachably placed on the bottom plate 201 of the workpiece 200, and the conversion mechanism 40 enables the camera 50 to capture an image of the blind area 205. The display screen 70 is disposed on the support member 20 on one side of the camera 50. The display screen 70 is electrically connected to the camera 50. The camera 50 transmits the image of the blind spot 205 to the display screen 70. The display screen 70 is capable of displaying an easily viewable enlarged and clear image of the blind spot 205.

Referring to fig. 2 and 3, the conversion mechanism 40 includes a base 41. The base 41 is detachably placed on the bottom plate 201 of the workpiece 200. The base 41 has a plurality of inclined surfaces 411 on its peripheral wall. In this embodiment, the base 41 is provided with a plurality of inclined surfaces 411 facing one side of the through hole 2041 of the workpiece 200. One bevel 411 is provided corresponding to one lens 43. Each lens 43 is aligned with a respective through hole 2041. An acute angle formed by the central axis of the through hole 2041 and the horizontal direction is α, and an acute angle formed by the corresponding inclined surface 411 and the horizontal direction is β. α and β satisfy: beta is 45-alpha/2, and accords with the reflection principle of light rays so as to ensure that the image is clear. The light source 60 illuminates the blind zone 205 by reflection from the mirror 43. The blind zone 205 is reflected by the mirror 43 to the camera 50 for imaging. It is understood that the angle of the inclined surface 411 is set according to the angle between the center line of the corresponding through hole 2041 and the horizontal direction. The angles of the plurality of inclined surfaces 411 may be the same or different as long as β is 45 ° - α/2.

It will be appreciated that the number of bevels 411 and lenses 43 is set according to the number of blind areas 205 to be inspected. In the present embodiment, the number of the inclined surfaces 411 and the number of the lenses 43 are two, respectively, but not limited thereto.

In this embodiment, the inclined surface 411 is disposed on one side of the base 41. It is understood that in other embodiments, the plurality of inclined planes 411 may be distributed on different sides of the base 41. The base 41 is rotated to align the inclined surfaces 411 of different angles on different sides with the corresponding through holes 2041.

It will be appreciated that a base plate (not shown) with a triangular cross-section may be provided on each bevel 411, and the corresponding lens 43 may be provided on the base plate. The pad is located between the corresponding lens 43 and the bevel 411. The angle of the lens 411 relative to the horizontal direction is adjusted by sliding the pad along the inclined surface 411 so as to satisfy β 45 ° - α/2.

In the present embodiment, the lens 43 is a prism, but is not limited thereto. For example, in other embodiments, the lens 43 may be a flat mirror.

Referring to fig. 2, in the present embodiment, a portion of a side of the base 41 facing away from the base 10 is protruded upward to form a handle 413 for facilitating the taking and placing of the switching mechanism 40 on the workpiece 200. At least one recess 415 is also provided in the base 41 to avoid other elements on the workpiece 200.

In the present embodiment, referring to fig. 1 and fig. 4, the supporting member 20 includes a guide post 21 and a connecting plate 23. The guide posts 21 are vertically disposed on the base 10. One end of the connecting plate 23 is provided with the camera 50, and the other end is provided with a slide hole 231. The slide hole 231 of the connecting plate 23 is sleeved on the guide post 21. The connecting plate 23 can be moved along the guide post 21 to adjust the detection distance of the camera 50. The slide hole 231 is axially interrupted to the end face of the through connection plate 23 away from the side wall of the camera 50. The two disconnected portions of the slide hole 231 are connected by screws to fix the connection plate 23 to the guide post 21.

In operation, the position of the connecting plate 23 fixed on the guide post 21 is first adjusted to adjust the detection distance so as to make the camera 50 image clearly. The workpiece 200 is then placed on the base 10 with the two sidewalls 202 of the workpiece 200 abutting against the locating members 30. The clamping handle 413 moves the conversion mechanism 40 onto the base plate 201 and aligns the corresponding lens 43 with the through hole 2041. The light source 60 is reflected by the mirror 43 and shines into the blind area 205 through the through hole 2041, and the blind area 205 is reflected by the mirror 43 and shines to the camera 50 through the through hole 2041 and forms an image. The camera 50 transmits an image of the blind spot 205 to the display screen 70. The image of the enlarged blind area 205 of the display screen 70 forms an easily observable, sharp image of the blind area 205. And comparing the image with the qualified blind area 205 to obtain the glue blocking condition of the blind area 205.

In the present embodiment, the positioning member 30 is an L-shaped plate, but is not limited thereto. For example, in other embodiments, the positioning element 30 may adopt a plurality of positioning pins, at least two positioning pins are disposed corresponding to one side wall 202 of the workpiece 200, and the plurality of positioning pins respectively abut against the two side walls 202 of the workpiece 200 to position the workpiece 200.

It is understood that in other embodiments, the light source 60 may be a fluorescent lamp, and the light source 60 is disposed on the support 20 and located at one side of the camera 50.

The detection device 100 provided by the present invention can make the camera 50 shoot the image of the blind area 205 by means of the reflection of the lens 43 aligned with the through hole 2041, and can observe the clear and magnified image of the blind area 205 by means of the display screen 70. The detection device 100 realizes the detection of the blind area, and has the advantages of simple structure, easy operation and accurate and reliable detection result.

In addition, other modifications within the spirit of the invention may occur to those skilled in the art, and it is understood that such modifications are intended to be included within the scope of the invention as claimed.

Claims

1. The utility model provides a detection device for detect the blind area in the work piece, the work piece includes the lateral wall, set up a plurality of gauze on the lateral wall, every this gauze is equipped with the support of bonding on this lateral wall towards the inside one side of this work piece, be equipped with the inside through-hole of this gauze of intercommunication and this work piece on the support in this work piece, component on this work piece blocks the sight that detects this gauze through this through-hole and forms this blind area that can't direct observation, this detection device includes the base, the camera, the light source and set up support piece and setting element on this base, this base is used for bearing this work piece, this setting element is used for fixing a position this work piece, this camera sets up on this support piece, this light source sets up on this camera, this camera and this light source are towards this setting element and all are located the top of this setting element, its characterized in that: the detection device further comprises a conversion mechanism and a display screen, the conversion mechanism comprises a base and a plurality of lenses, a plurality of inclined planes are arranged on the peripheral wall of the base, the angles of the inclined planes are the same or different, each inclined plane is correspondingly provided with one lens, the base is used for being placed in the workpiece, each lens can be aligned to the through hole corresponding to the blind area to be detected, the display screen is arranged on the support and located on one side of the camera, the display screen is electrically connected with the camera, the light source illuminates the blind area through the through hole by means of reflection of the lens, the lens reflects the image of the blind area to the camera to form the blind area, the camera transmits the image of the blind area to the display screen, and the display screen is used for displaying the image of the blind area to detect whether glue flowing between the support and the screen is blocked or not.

2. The sensing device of claim 1, wherein: the acute angle of each lens relative to the horizontal direction is beta, the acute angle of the central axis of the corresponding through hole relative to the horizontal direction is alpha, and the alpha and the beta satisfy the following conditions: beta is 45-alpha/2.

3. The detection device of claim 1, wherein: the lens is a prism.

4. The detection device of claim 1, wherein: the part of one side of the base, which is far away from the base, is upwards protruded to form a handle so as to facilitate the taking and placing of the conversion mechanism on the workpiece.

5. The detection device of claim 1, wherein: the base is provided with at least one groove to avoid elements on the workpiece.

6. The detection device of claim 1, wherein: the camera is an industrial camera and the light source is an annular light source.

7. The detection device of claim 1, wherein: each inclined plane is provided with a base plate with a triangular cross section, the corresponding lens is arranged on the base plate, and the base plate slides along the inclined plane to adjust the angle of the lens.