CN115112667A - Automatic detection mechanism - Google Patents

Automatic detection mechanism Download PDF

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Publication number
CN115112667A
CN115112667A CN202210735122.XA CN202210735122A CN115112667A CN 115112667 A CN115112667 A CN 115112667A CN 202210735122 A CN202210735122 A CN 202210735122A CN 115112667 A CN115112667 A CN 115112667A
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China
Prior art keywords
limiting
component
shielding
detected
inclined plane
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CN202210735122.XA
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Chinese (zh)
Inventor
孙云峰
袁少青
杨悦
耿佳琨
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Beijing Matrix Owl Technology Co ltd
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Beijing Matrix Owl Technology Co ltd
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Priority to CN202210735122.XA priority Critical patent/CN115112667A/en
Publication of CN115112667A publication Critical patent/CN115112667A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/8851Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106General arrangement of respective parts
    • G01N2021/0112Apparatus in one mechanical, optical or electronic block

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The invention provides an automatic detection mechanism, comprising: the image shooting component is used for shooting images of the object to be detected; the bearing component is used for bearing the object to be tested in an inclined plane manner; the moving component drives the bearing component to move so that the object to be detected positioned on the bearing component moves to a preset image shooting station; the limiting component is used for limiting the object to be detected positioned on the bearing component so as to fix the position of the object to be detected on the bearing component in a first process, and releasing the limitation of the object to be detected positioned on the bearing component so as to enable the object to be detected to move relative to the bearing component in a second process; and the shielding assembly keeps shielding the lower end position of the inclined plane until the limiting assembly removes the limiting position and then removes the shielding of the lower end position of the inclined plane, so that the object to be detected slides downwards along the inclined plane in the second process. The invention can realize continuous automatic machine detection with high detection efficiency.

Description

Automatic detection mechanism
Technical Field
The invention relates to the field of inspection and detection, in particular to a mechanism for detecting by using machine vision.
Background
The quality of products needs to be checked in the production process, and for products with very large yield, each product needs a large amount of manpower for detection, so the products are usually selected by a sampling inspection mode. But the sampling inspection mode easily causes the problem that the product defects are not easy to be found. Moreover, the manual quality inspection has higher requirements on the experience of personnel, and the condition of poor quality inspection stability exists.
With the development of machine vision technology, general inspection can be realized and experience dependence on people can be greatly reduced by shooting products so as to analyze quality problems existing on the products by using the machine vision technology.
However, the above method needs to be matched with a set of automatic detection mechanism to realize the whole process so that the detection can be stably repeated for multiple times, and such an automatic detection mechanism is not available at present.
Disclosure of Invention
The invention aims to provide an automatic detection mechanism which is used for stably realizing product detection by using a machine vision method.
In order to achieve the above purpose, the invention provides the following technical scheme:
an automatic detection mechanism comprising:
the image shooting component is used for shooting images of the object to be detected;
the bearing component is used for bearing the object to be tested in an inclined plane manner;
the moving component drives the bearing component to move so that the object to be detected positioned on the bearing component moves to a preset image shooting station;
the limiting component is used for limiting the object to be detected positioned on the bearing component so that the object to be detected is fixed in position on the bearing component in a first process, and is used for releasing the limiting of the object to be detected positioned on the bearing component so that the object to be detected can move relative to the bearing component in a second process;
the shielding component is used for keeping shielding the lower end position of the inclined plane until the limiting component removes the limiting position and then removes the shielding of the lower end position of the inclined plane, so that the object to be detected slides downwards along the inclined plane in the second process;
the limiting assembly and the shielding assembly are in a mechanical linkage structure, and the starting time of shielding removal of the shielding assembly is later than the time of limiting removal of the limiting assembly;
wherein the first process ends after the image pickup is completed, and the second process starts after the image pickup is completed.
Further, the spacing subassembly includes:
the first limiting part is fixed on one side of the inclined plane of the bearing component;
the second limiting part is movably arranged on the other side of the inclined plane of the bearing component;
the first motor is mechanically connected to the second limiting part and controls the second limiting part to change the distance between the second limiting part and the first limiting part through the rotation direction of the first motor, so that whether the limiting assembly limits the object to be detected or not is realized.
Further, an output shaft of the first motor is provided with a lead screw, and the output shaft and the lead screw are both arranged in the direction of relative displacement of the second limiting part and the first limiting part;
the lead screw is provided with a first pushing part which is used for pushing and pulling the second limiting part along with the rotation of the lead screw along the length direction of the lead screw so as to change the distance between the lead screw and the first limiting part.
Furthermore, one end of the screw rod is provided with a first gear, the first gear is meshed with a second gear, and the first gear and the second gear are both fixed in a central shaft manner;
a second pushed part is fixed on the shielding component;
the second gear is coaxially provided with a second pushing portion and used for contacting the second pushed portion after the first motor rotates for a preset angle in a first direction and continuing to push the shielding component to move from top to bottom along with the rotation of the first motor until the shielding component releases shielding of the lower end of the inclined plane, and the first direction is used for controlling the first limiting portion and the second limiting portion to be away from each other.
Further, the method also comprises the following steps:
and the rebounding part provides rebounding force for the shielding assembly which moves to the position after shielding is released.
Further, a first conductive part is arranged on the first limiting part, and a second conductive part is arranged on the second limiting part; when the first limiting part and the second limiting part limit and release the limiting of the object to be detected, the first conductive part and the second conductive part are switched on and off through the object to be detected.
The supporting component, the limiting component and the shielding component are directly or indirectly arranged on the base;
the motion assembly, comprising:
a guide rail cooperating with the base to provide motion guidance to the base;
a second motor mechanically coupled to the base and configured to move the base along the guide rail.
Further, a photoelectric switch is arranged on a key station on the movement path of the base, and the key station comprises at least one of the following parts: a starting station, an end station and an image shooting station.
Further, the axial direction of the first motor is a first direction, the axial direction of the second motor is a second direction, and the first direction is parallel to the second direction; the normal direction of the inclined plane is perpendicular to the first direction.
Furthermore, the image shooting assembly comprises an image collecting device and a position adjusting device, the image collecting device is fixed near the image shooting station through the position adjusting device, and the position adjusting device is used for adjusting the distance and the angle between the image collecting device and the object to be detected. Has the advantages that:
as can be seen from the above technical solutions, the technical solution of the present invention provides an automatic detection mechanism, including: the image shooting component is used for shooting images of the object to be detected; the bearing component is used for bearing the object to be tested in an inclined plane manner; the moving component drives the bearing component to move so as to enable the object to be detected on the bearing component to move to a preset image shooting station; the limiting component is used for limiting the object to be detected positioned on the bearing component so that the object to be detected is fixed in position on the bearing component in a first process, and is used for releasing the limiting of the object to be detected positioned on the bearing component so that the object to be detected can move relative to the bearing component in a second process; the shielding component is used for keeping shielding the lower end position of the inclined plane until the limiting component removes the limiting position and then removes the shielding of the lower end position of the inclined plane, so that the object to be detected slides downwards along the inclined plane in the second process; the limiting assembly and the shielding assembly are in a mechanical linkage structure, and the starting time of shielding removal of the shielding assembly is later than the time of limiting removal of the limiting assembly; wherein the first process ends after the image pickup is completed, and the second process starts after the image pickup is completed. By the scheme, machine vision detection of the articles to be detected and blanking after detection are automatically realized.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments according to the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention;
FIG. 3 is a left side view of a securing assembly of an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a securing assembly according to an embodiment of the invention;
in the figures, the reference symbols have the following meanings:
a first camera 1; a second camera 2; a third motor 3; a first light source 4; a second light source 5; a third light source 6; a guide rail 7; a second electric motor 8; a first electric motor 9; a lead screw 10; a lead screw fixing seat 11; a first gear 12; a second gear 13; a holding member 14; a first stopper 15; a second stopper portion 16; a speed reducer 17; the second pushing portion 18; the second pushed portion 19; a shutter assembly 20; a spring back portion 21; the shutter plates 22, 24; the photoelectric switches 23, 25; a first coupling 26; a rotating platform 27; a slide platform 28; a first slider 29; a second slider 30; a third slider 31; a connecting plate 32; the first conductive portion 33.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily defined to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
As shown in fig. 1, an embodiment of the present application provides an automatic detection mechanism, which is used for detecting surface quality of a railway track elastic strip, where detection contents include size, surface quality defects, and the like, and a means of the detection is to fix the elastic strip and obtain a picture of the surface of the elastic strip by shooting, and analyze whether there is an quality problem of the elastic strip in the obtained picture by using a machine vision technology, so as to replace manual detection of the elastic strip. Since several image capturing stations are usually set by using machine vision, in order to achieve the consistency of the above automatic detection, the automatic detection mechanism in this embodiment needs to be able to fix the elastic strip before shooting, transport the elastic strip to the image capturing station, and put down the elastic strip after shooting to release a new fixing space for the next elastic strip to be detected, and repeatedly execute the above processes.
The device satisfying the above function may be applied to detection of various objects, and is not limited to the detection of the elastic strip described in this embodiment. In order to fully describe the above device, the present embodiment still uses the elastic strip as the detection object for detection.
As shown in fig. 1, the automatic detection mechanism of the present embodiment has the following specific structure, including:
and the image shooting component is used for shooting the image of the object to be detected. In fig. 1, the image capturing assembly includes an acquisition device and a position adjustment device, the image acquisition device is fixed near the image capturing station through the position adjustment device, and the position adjustment device is used for adjusting the distance and angle between the image acquisition device and the object to be measured. Specifically, in order to detect the elastic strip, the acquisition device provided in this embodiment includes a first camera 1, a second camera 2 and a third camera 3, and the cameras are respectively arranged as required, so that the elastic strip can be shot at different angles according to the requirement of quality detection. In order to ensure the reliable quality of the shot images, a first light source 4, a second light source 5 and a third light source 6 are correspondingly arranged on the acquisition device respectively. The position adjusting device includes, but is not limited to, a rotating platform 27 and a sliding platform 28, such as the third camera 3 shown in fig. 1, the third camera 3 is slidably disposed on a slide rail, an ideal rail direction of the slide rail is perpendicular to the object to be measured, the third camera 3 can adjust the position on the slide rail to realize the distance between the lens of the third camera 33 and the object to be measured, that is, the distance between the lens and the object to be measured is changed through the slide rail type sliding platform 28. The sliding platform 28 is integrally rotatably arranged on a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the sliding direction of the sliding rail, so that the rotating shaft drives the sliding platform 28 to integrally rotate, the direction of the sliding rail is adjusted, and the requirement that the shooting angle needs to be adjusted under certain conditions is met. Specific implementations of the rotating platform 27 and the sliding platform 28 include, but are not limited to, the implementations described above in the embodiments of the present application, and those skilled in the art may design other possible solutions as needed.
In the detection, the elastic strip needs to have a supporting object to support it, and therefore, the supporting component 14 is included in the present embodiment, and the main structure thereof is a supporting plate, and the supporting plate provides a support for the object to be detected in an inclined plane manner. Above-mentioned bullet strip is arranged in on the inclined plane, is for after the detection of convenience bullet strip, can realize the blanking along the inclined plane gliding. The specific inclination of inclined plane need compromise and can make the bullet strip slide smoothly and the image is absorb conveniently.
In the testing process of whole bullet strip, owing to there are a plurality of images to absorb the station, consequently need drive the bullet strip and carry out the motion, consequently this embodiment includes the motion subassembly for the drive bearing subassembly 14 carries out the motion so that be located on bearing subassembly 14 the article that awaits measuring move to predetermined image and absorb the station. In the embodiment, the image capturing stations are easily identified by setting the cooperation of the photoelectric switches 25 and the light shielding plates 24, wherein the photoelectric switches 25 are provided in a plurality, each photoelectric switch 25 is used for indicating each image capturing station, the light shielding plates 24 are arranged on the moving assembly, the light shielding plates 24 synchronously move to the positions of the photoelectric switches 25 along with the moving assembly so as to change the level of the photoelectric switches 25, so that the moving assembly is controlled to stop, and then the image capturing assembly works until the image is captured, and the moving assembly is controlled to start to move to the next station again.
In addition to the movement between the image capturing stations, the movement assembly described above requires, in view of the fact that the entire apparatus can be continuously and stably repeatedly operated, the provision of a starting station for the station where the elastic strip is placed on the support assembly 14 from outside the entire apparatus and an end station, which is usually automated, and therefore requires the fixing of the starting station, and each time the previous elastic strip is detected, the support assembly 14 needs to be returned to the starting station, i.e., the base resetting step. The end station is a station for controlling the return of the bearing component 14, and the bearing component 14 is controlled to move to the end station and then return to the start station, so that the circulation process of the whole bearing component 14 between stations is unified, and the detection of the elastic strips is convenient to repeat. The sensing of the starting station and the ending station can also be realized by arranging the photoelectric switch 25 at the starting station and the ending station and matching the photoelectric switch 25 with the shading plate 24.
The motion assembly comprises a guide rail 7 and a second motor 8, the bearing assembly 14 is arranged on the guide rail 7 through a base in a matching mode, the second motor 8 is mechanically connected to the base and enables the base to move along the guide rail 7, as shown in fig. 2, a first coupler 26 is arranged on an output shaft of the second motor 8 in the drawing, the guide rail 7 is a linear guide rail, a lead screw is arranged in the linear guide rail, the base is installed on the lead screw, one end of the linear guide rail is a starting point station, the other end of the linear guide rail is an end point station, and the second motor 8 drives the base to move on the guide rail 7 through the first coupler 26. A shading plate 24 is fixed on the base, photoelectric switches 25 are respectively fixed at two ends of the guide rail 7, and the position of the base on the guide rail 7 at present can be obtained through the matching of the shading plate 24 and the photoelectric switches 25.
In order to fix the elastic strip when appropriate and timely remove the restriction to the elastic strip so that the elastic strip can smoothly drop, the base of the embodiment is also directly or indirectly provided with a limiting component and a shielding component 20.
The limiting component is used for limiting the object to be tested positioned on the bearing component 14 so that the object to be tested is fixed in position on the bearing component 14 in the first process, and is relieved from limiting the object to be tested positioned on the bearing component 14 so that the object to be tested can move relative to the bearing component 14 in the second process.
The first process is a process of fixing the position of the article to be detected until image shooting is completed, the process needs to keep the position of the article to be detected in a fixed state, and the second process is a process of completing blanking of the article to be detected after image shooting is completed, so that position limitation of the article to be detected needs to be removed.
As shown in fig. 2, the limiting assembly includes: a first position-limiting part 15 fixed to one side of the inclined surface of the supporting member 14; and the second limiting part 16 is movably arranged at the other side of the inclined plane of the bearing component 14. In the picture, the inclined plane direction of bearing subassembly 14 is towards the paper outside, first spacing portion 15 set up in the left side on inclined plane, the spacing portion 16 of second set up in the right side on inclined plane and be provided with first slider 29 on it and be used for sliding with a slide rail cooperation, first spacing portion 15 with the cooperation of the spacing portion 16 of second is realized right the article that await measuring spacing with remove spacingly, specifically through wherein thereby the spacing portion 16 of second makes for the activity sets up first spacing portion 15 with space size between the spacing portion 16 of second is changeable, and when the distance between the two is less, realizes spacing to the article that await measuring, when the distance between the two is great, removes spacing to the article that await measuring. The movement of the second limiting part 16 is realized through the first motor 9, the first motor 9 is mechanically connected to the second limiting part 16, and the rotation direction of the first motor 9 controls the second limiting part 16 to change the distance between the second limiting part 16 and the first limiting part 15, so that whether the limiting component limits the object to be detected or not is realized. Specifically, as shown in fig. 2, the first motor 9 is fixed at a lower portion of a first limiting portion 15 on the left side in the drawing, a fixed side plate is provided on the base below a second limiting portion 16 on the right side in the drawing, a screw rod 10 is provided on an output shaft of the first motor 9, the other end of the screw rod 10 penetrates through the fixed side plate, and both the output shaft and the screw rod 10 are provided in a direction of relative displacement between the second limiting portion 16 and the first limiting portion 15. The lead screw 10 is provided with a first pushing part for pushing and pulling the second limiting part 16 along with the rotation of the lead screw 10 and the movement along the length direction of the lead screw 10. As shown in fig. 4, in particular, the first pushing part includes a screw fixing seat 11, a connecting plate 32 and a third sliding block 31 which are fixedly connected to each other, the screw fixing seat 11 is sleeved on the screw 10, the third sliding block 31 is matched with the bottom of the bearing plate on the bearing component 14 through a track sliding block structure, the main body of the second position-limiting portion 16 is a side plate, the connecting plate 32 is fixedly connected with the side plate of the second position-limiting portion 16, so that when the first pushing part moves along with the movement of the screw rod 10, the second limiting part 16 is driven to move along the direction of the screw rod 10, so that the distance between the first position-limiting part 15 and the second position-limiting part 16 changes, when the distance becomes larger and the object to be detected cannot be clamped, the object to be detected is relieved from being limited, and when the distance becomes small and is small enough to clamp the object to be detected, the object to be detected is limited. The change of the distance is mainly controlled by the steering of the first motor 9, and the positive rotation and the negative rotation respectively control the limit and release the limit.
In order to facilitate the control system to judge whether the limit is completed or not, a first conductive part 33 is arranged on the first limit part 15, a second conductive part is arranged on the second limit part 16, and the second conductive part is arranged opposite to the first conductive part 33 in the figure; when the first limiting portion 15 and the second limiting portion 16 limit and limit the object to be tested, the first conductive portion 33 and the second conductive portion are connected and disconnected through the object to be tested. When the first conductive part 33 and the second conductive part can be conducted, the restraint is considered to be completed, whereas the restraint is considered to be released.
The shielding component 20 is matched with the blanking function, specifically, as shown in fig. 2 and 4, the shielding component 20 is used for keeping shielding the lower end position of the inclined plane until the limiting component removes the limiting, and then removes the shielding of the lower end position of the inclined plane, so that the object to be detected slides down along the inclined plane in the second process; the limiting assembly and the shielding assembly 20 are of a mechanical linkage structure, and the starting time of shielding removal of the shielding assembly 20 is later than the time of limiting removal of the limiting assembly.
The main part of sheltering from subassembly 20 is a shielding plate and is provided with second slider 30 on it and be used for sliding with a guide rail cooperation, the position on the last edge of shielding plate is higher than the lower extreme on inclined plane then can shelter from the object of waiting to detect that is located on the inclined plane and prevent its landing inclined plane, and the last edge that works as the shielding plate descends to the object of waiting to detect then can't be treated after the lower extreme on inclined plane shelters from to wait to detect the object and realize automatic blanking under the combined action of dead weight and frictional force. Because the elastic strip has certain elasticity, and the restriction of the restriction component to the elastic strip can lead to slight deformation of the elastic strip to one side of the shielding plate, the elastic strip is tightly attached to the shielding plate, therefore, in the blanking process, the shielding component 20 is controlled to remove shielding after the restriction component completely removes the restriction to the elastic strip, otherwise, the pressure between the shielding component 20 and the elastic strip can hinder the movement of the shielding component 20.
In this embodiment, the specific structure of the mechanism for realizing the movement of the shielding assembly 20 is as follows:
a first gear 12 is arranged on an output shaft of the first motor 9, a second gear 13 is arranged on the first gear 12 in a meshed manner, and the first gear 12 and the second gear 13 are both fixed in a central shaft manner; a second pushed part 19 is fixed on the shielding component 20; the second gear 13 is coaxially provided with a second pushing portion 18, and is configured to contact the second pushed portion 19 after the first motor 9 rotates by a preset angle in a first direction, and continue to push the shielding component 20 to move from top to bottom along with the rotation of the first motor 9 until the shielding component 20 releases the shielding of the lower end of the inclined plane, where the first direction is a direction for controlling the first limiting portion 15 and the second limiting portion 16 to be away from each other.
As shown in fig. 2 and 4, the first gear 12 is disposed at the end of the lead screw 10 and near the fixed side plate, the rotation of the first motor 9 is transmitted to the first gear 12 through the lead screw 10, the second gear 13 is disposed in the same plane as the first gear 12, the output shaft of the second gear 13 passes through the fixed side plate and is positioned below the bearing plate, the output shaft of the second gear 13 is preferably provided with a speed reducer 17, which reduces the rotation speed and transmits the reduced rotation speed to a second pushing part 18, as shown in the figure, the second pushing portion 18 has a shaft hole, the shaft hole is sleeved on the output end of the speed reducer 17, the second pushing portion 18 has a rod as the second pushing portion 18, and the second pushed portion 19 of the shielding plate is located near the rod and enables the rod to apply downward pushing force to the second pushing portion 18. As shown in fig. 4, when the rod-like member is rotated clockwise in the paper surface direction, the second pushed portion 19 is pressed downward, and the shutter is moved downward.
After the blanking is completed, the device needs to prepare for the detection of the next object to be detected, and therefore the reset process needs to be completed, including the processes of recovering the shielding state by the shielding component 20, resetting the limiting component and resetting the base, so that the base returns to the initial station and the limiting component limits the object to be detected again when the next object to be detected is placed on the supporting plate of the supporting component 14. Wherein a rebound part 21, specifically a plurality of spring rods arranged along the shielding plate, is arranged below the shielding assembly 20, and provides a rebound force to the shielding assembly 20 moving to the position after shielding is released, and at the same time, the first motor 9 also rotates to release the downward pressure applied to the shielding assembly 20 by the second pushing part 18, and at this time, the rotation speed of the first motor 9 is controlled so that the second pushing part 18 is always in contact with the second pushed part 19 on the shielding assembly 20 but almost has no force or only a small force so as not to change the relative position relationship between the second pushing part 18 and the second pushed part 19. The reset of the limiting assembly is completed before the reset of the base, the reset of the limiting assembly is provided with a photoelectric switch 23 and a shielding plate 22, wherein 2 photoelectric switches 23 are respectively used for indicating a state that the distance between the second limiting part 16 and the first limiting part 15 in the limiting assembly is reduced to be minimum, namely a limiting state, and a state that the distance between the second limiting part 16 and the first limiting part 15 is expanded to be maximum, when the limiting assembly is reset, the second limiting part 16 moves towards the first limiting part 15 firstly, then moves away from the first limiting part 15 after triggering one photoelectric switch 23 until triggering the other photoelectric switch 23, and therefore the reset of the limiting assembly is completed. The photoelectric switch 23 is triggered to change the rotation direction of the second motor 9 to realize the resetting process of the limiting component.
In this embodiment, the axial direction of the first motor 9 is a first direction, the axial direction of the second motor 8 is a second direction, and the first direction is parallel to the second direction; the normal direction of the inclined plane is perpendicular to the first direction. So, the direction of opening and shutting of spacing subassembly is unanimous with the direction of motion of whole base, and accomplishes the motion of sheltering from subassembly 20 simultaneously, and overall structure designs compactly, and linkage design benefit.
The control of the device is completed through the control system, the control system induces the current state of the mechanical structure through a plurality of induction signals arranged in the device so as to control the next step of movement, the specific induction device comprises the on-off signal of the photoelectric switch, the conductive on-off signal and the like, the design can organically control the whole mechanical device and continuously complete the detection of the object to be detected for many times according to a set program, and the automation degree is high.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims (10)

1. Automatic detection mechanism, its characterized in that: the method comprises the following steps:
the image shooting component is used for shooting images of the object to be detected;
the bearing component is used for bearing the object to be tested in an inclined plane manner;
the moving component drives the bearing component to move so that the object to be detected positioned on the bearing component moves to a preset image shooting station;
the limiting component is used for limiting the object to be detected positioned on the bearing component so that the object to be detected is fixed in position on the bearing component in a first process, and is used for releasing the limiting of the object to be detected positioned on the bearing component so that the object to be detected can move relative to the bearing component in a second process;
the shielding component is used for keeping shielding the lower end position of the inclined plane until the limiting component removes the limiting position and then removes the shielding of the lower end position of the inclined plane, so that the object to be detected slides downwards along the inclined plane in the second process;
the limiting assembly and the shielding assembly are in a mechanical linkage structure, and the starting time of shielding removal of the shielding assembly is later than the time of limiting removal of the limiting assembly;
wherein the first process ends after the image pickup is completed, and the second process starts after the image pickup is completed.
2. The automatic detection mechanism of claim 1, wherein: spacing subassembly includes:
the first limiting part is fixed on one side of the inclined plane of the bearing component;
the second limiting part is movably arranged on the other side of the inclined plane of the bearing component;
the first motor is mechanically connected to the second limiting part and controls the second limiting part to change the distance between the second limiting part and the first limiting part through the rotation direction of the first motor, so that whether the limiting assembly limits the object to be detected or not is realized.
3. The automatic detection mechanism of claim 2, wherein: a screw rod is arranged on an output shaft of the first motor, and the output shaft and the screw rod are both arranged in the direction of the relative displacement of the second limiting part and the first limiting part;
the lead screw is provided with a first pushing part which is used for pushing and pulling the second limiting part along with the rotation of the lead screw along the length direction of the lead screw so as to change the distance between the lead screw and the first limiting part.
4. The automatic detection mechanism of claim 3, wherein: a first gear is arranged at one end of the screw rod, a second gear is meshed with the first gear, and the first gear and the second gear are both fixed in a central shaft manner;
a second pushed part is fixed on the shielding component;
the second gear is coaxially provided with a second pushing portion and used for contacting the second pushed portion after the first motor rotates for a preset angle in a first direction and continuing to push the shielding component to move from top to bottom along with the rotation of the first motor until the shielding component releases shielding of the lower end of the inclined plane, and the first direction is used for controlling the first limiting portion and the second limiting portion to be away from each other.
5. The automatic detection mechanism of claim 3, wherein: further comprising:
and the rebounding part provides rebounding force for the shielding assembly which moves to the position after shielding is released.
6. The automatic detection mechanism of claim 2, wherein: a first conductive part is arranged on the first limiting part, and a second conductive part is arranged on the second limiting part; when the first limiting part and the second limiting part limit and release the limiting of the object to be detected, the first conductive part and the second conductive part are switched on and off through the object to be detected.
7. The automatic detection mechanism according to any one of claims 2 to 6, characterized in that: the supporting component, the limiting component and the shielding component are directly or indirectly arranged on the base;
the motion assembly, comprising:
a guide rail cooperating with the base to provide motion guidance to the base;
a second motor mechanically coupled to the base and configured to move the base along the guide rail.
8. The automatic detection mechanism of claim 7, wherein: photoelectric switches are arranged on key stations on the movement path of the base, and the key stations comprise at least one of the following components: a starting station, an end station and an image shooting station.
9. The automatic detection mechanism of claim 7, wherein: the axial direction of the first motor is a first direction, the axial direction of the second motor is a second direction, and the first direction is parallel to the second direction; the normal direction of the inclined plane is perpendicular to the first direction.
10. The automatic detection mechanism of claim 7, wherein: the image shooting assembly comprises an image collecting device and a position adjusting device, the image collecting device is fixed near the image shooting station through the position adjusting device, and the position adjusting device is used for adjusting the distance and the angle between the image collecting device and the object to be detected.
CN202210735122.XA 2022-06-27 2022-06-27 Automatic detection mechanism Pending CN115112667A (en)

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Application Number Priority Date Filing Date Title
CN202210735122.XA CN115112667A (en) 2022-06-27 2022-06-27 Automatic detection mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210735122.XA CN115112667A (en) 2022-06-27 2022-06-27 Automatic detection mechanism

Publications (1)

Publication Number Publication Date
CN115112667A true CN115112667A (en) 2022-09-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210735122.XA Pending CN115112667A (en) 2022-06-27 2022-06-27 Automatic detection mechanism

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Country Link
CN (1) CN115112667A (en)

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