CN218629395U - Cylinder density appearance based on machine vision - Google Patents

Abstract

The application relates to the technical field of detection equipment, in particular to a cylinder density meter based on machine vision, which comprises a mounting platform, a mounting rack arranged on the mounting platform, a quality measuring device arranged on the mounting platform and used for measuring the quality of a workpiece, a backlight source arranged on the mounting rack and used for projecting the workpiece, and a camera lens arranged on the mounting rack and used for acquiring an image of the workpiece; the quality measuring device is provided with a support frame for supporting a workpiece, and the workpiece is positioned between the backlight source and the camera lens; and the mounting frame is also provided with an adjusting device for adjusting the angle and the position of the camera lens. The method and the device have the effects of automatically weighing the workpiece and acquiring the overall dimension of the workpiece simultaneously so as to improve the measuring speed and the accuracy of the measuring result.

Description

Cylinder density appearance based on machine vision

Technical Field

The application relates to the technical field of detection equipment, in particular to a cylinder density meter based on machine vision.

Background

The density is one of the characteristics of the workpiece, and the density is different for different workpieces, so that the density can be used to identify the workpiece. Since the density is equal to the mass of the workpiece divided by the volume, the density of the workpiece can be obtained when the mass and the volume of the workpiece are measured, wherein the mass of the workpiece can be directly weighed by the mass measuring device, and therefore, the most important point is how to accurately measure the volume of the workpiece.

The method for measuring the volume of the workpiece recorded in the related art usually adopts two modes, one mode is manual measurement by using a caliper, the error of the measurement mode is large, multiple times of measurement are needed for reducing the error, and the overall measurement speed is slow; the other method is a drainage method, namely, a container is filled with water, the workpiece is completely immersed in the water, the drained water is collected and weighed, and the volume is calculated by using the known density of the water.

With the development of science and technology, machine vision becomes a new industrial automation technology with rapid development, and is a typical industrial vision detection system, which consists of a light source, an optical imaging system (image sensor), an image acquisition link (image acquisition card), an image processing link and an image understanding and recognizing link. By

The camera shoots the industrial part, and then the industrial part is input into a computer through an image data acquisition card to be subjected to image processing, so that the overall dimension of the workpiece is obtained.

For example: the existing workpiece dimension measuring method and device based on machine vision comprise the following steps: acquiring an original workpiece image of a workpiece to be detected; selecting a median filtering template to filter the original image of the workpiece; performing image segmentation on the filtered image based on an OTSU algorithm; performing edge detection on the segmented image, acquiring the edge of the workpiece to be measured for measurement, and calculating the pixel distance between the edges of the image of the workpiece to be measured; and acquiring a calibration coefficient, and calculating the actual physical size of the workpiece to be detected according to the pixel distance between the edges and the calibration coefficient. The device comprises an acquisition module, a denoising module, a segmentation module, an edge detection module and a calculation module. The method and the device can meet the requirements of detection precision and speed during workpiece measurement, have higher robustness on environmental change, and realize real-time non-contact workpiece dimension detection based on machine vision.

The existing measuring method cannot simultaneously obtain the mass and the volume of the workpiece, the mass and the volume of the workpiece need to be measured respectively to obtain initial data so as to obtain the density of the workpiece, and the measuring process is complex, time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

In order to carry out automatic weighing and obtain work piece overall dimension to the work piece simultaneously to improve measuring speed and measuring result's accuracy, this application provides a cylinder densimeter based on machine vision.

The application provides a cylinder density appearance based on machine vision adopts following technical scheme:

a cylinder densitometer based on machine vision comprises a mounting platform, a mounting rack arranged on the mounting platform, a quality measuring device arranged on the mounting platform and used for measuring the quality of a workpiece, a backlight source arranged on the mounting rack and used for projecting the workpiece, and a camera lens arranged on the mounting rack and used for acquiring an image of the workpiece; the quality measuring device is provided with a support frame for supporting a workpiece, and the workpiece is positioned between the backlight source and the camera lens; and the mounting frame is also provided with an adjusting device for adjusting the angle and the position of the camera lens.

By adopting the technical scheme, the workpiece is placed on the support frame, the angle and the position of the camera lens are well adjusted according to the shape and the size of the workpiece, the quality measuring device, the backlight source and the camera lens are started, the quality measuring device performs quality weighing on the workpiece, the backlight source can perform backlight projection on the workpiece, the camera lens can clearly capture the appearance image of the workpiece under the assistance of the backlight source and photograph the workpiece, the obtained data and image are transmitted to the computer, the volume is automatically obtained through processing, and further the density of the workpiece is obtained.

Optionally, the number of the camera lenses is two, and an included angle between axes of the two camera lenses is 90 degrees.

By adopting the technical scheme, the included angle between the axes of the camera lens on the optical measurement device is 90 degrees, so that two groups of diameters and lengths of the workpieces which are perpendicular to each other can be obtained simultaneously, and more accurate overall dimensions of the workpieces are obtained.

Optionally, the adjusting device includes an angle adjusting component for adjusting the angle of the camera lens.

By adopting the technical scheme, the angle of the camera lens can be adjusted according to the different shapes and sizes of the workpieces, so that the most accurate workpiece appearance image can be obtained.

Optionally, the angle adjusting assembly includes the rigid coupling and is in round platform on the mounting bracket, it is connected with the rotor plate to rotate on the round platform, one side shaping of rotor plate has the U-shaped board, wear to be equipped with the gag lever post on the U-shaped board, wear to be equipped with the ejector pin on the rotor plate, seted up on the gag lever post and supplied ejector pin male draw-in groove.

By adopting the technical scheme, the rotating plate is rotated, the camera lens is adjusted to a proper position, and the ejector rod is screwed to be clamped into the groove formed in the limiting rod, so that the rotating plate is fixed.

Optionally, the adjusting device further includes a horizontal adjusting component for adjusting the horizontal position of the camera lens.

By adopting the technical scheme, the horizontal position of the camera lens can be adjusted according to different sizes of the appearance of the workpiece, so that the most accurate appearance image of the workpiece is obtained.

Optionally, the horizontal adjustment assembly includes a third connecting plate fixedly connected to the rotating plate, a sliding plate is slidably connected to the third connecting plate, a limiting plate is arranged on the third connecting plate, a sliding groove is formed in the limiting plate, a limiting part is arranged on the sliding plate, and the limiting part can slide in the sliding groove.

By adopting the technical scheme, the limiting part slides in the sliding groove to drive the sliding plate to slide and further drive the camera lens to move, and when the camera lens is adjusted to a proper position, the limiting part is screwed to fix the sliding plate.

Optionally, the support frame includes the material holds in the palm, the material holds in the palm and is two inserting the arm structure, and two are two to insert and have the clearance between the arm.

Through adopting above-mentioned technical scheme, the material holds in the palm and can guarantee for two inserting arm structures that the light of backlight shines on whole work piece to make the camera lens can acquire the accurate image of work piece.

Optionally, the cylinder density meter based on machine vision further comprises a tray positioning assembly for supporting the support frame, the tray positioning assembly comprises a sliding table frame and a top plate for supporting the support frame, and a second driving assembly for driving the top plate to move horizontally is arranged on the sliding table frame.

Through adopting above-mentioned technical scheme, tray locating component can prevent that the material support from empting to guarantee the fixed stability of work piece.

Optionally, cylinder densimeter based on machine vision still includes the location and the dropproof device that are used for supporting the work piece, location and dropproof device include the installing frame and are used for supporting the push rod of work piece, be provided with on the installing frame and be used for driving push rod horizontal migration's a drive assembly.

Through adopting above-mentioned technical scheme, location and dropproof device can support the work piece, prevent that the work piece on the material support from dropping.

Optionally, the positioning and fall-prevention device further comprises a lifting table for driving the first driving assembly and the push rod to vertically move.

Through adopting above-mentioned technical scheme, the elevating platform can adjust the push rod place height to can be according to the size of different work pieces, the position of adjustment push rod, in order to realize the stable support.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the device is provided with an optical measuring device and a quality measuring device, wherein the optical measuring device comprises two camera lenses and two backlight sources, the included angle between the axes of the camera lenses on the optical measuring device is 90 degrees, so that two groups of diameters and lengths of workpieces which are perpendicular to each other can be obtained simultaneously, more accurate overall dimensions of the workpieces can be obtained, meanwhile, the quality measuring device can measure the quality of the workpieces, and then the obtained workpiece images and quality data are transmitted to a computer for subsequent processing to obtain the density of the workpieces, so that the workpieces can be automatically weighed, the volume can be measured and the density can be calculated simultaneously, the measuring speed is high, the relative error of the measuring result is small, and the accuracy of the obtained density of the workpieces is improved;

2. the camera lens is provided with the angle adjusting assembly and the horizontal adjusting assembly, so that the horizontal position of the camera lens and the angle of the camera lens can be adjusted according to the difference of each workpiece, the image which can be shot by the camera lens is highest in precision, and the obtained appearance size is most accurate;

3. this application is provided with location and dropproof device and tray positioner, and location and dropproof device can support the work piece, prevent that the work piece on the material support from dropping, and tray positioner can prevent that the material support from empting to guarantee the fixed stability of work piece.

Drawings

FIG. 1 is a schematic structural diagram of a cylinder density meter based on machine vision in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a base in an embodiment of the present application;

FIG. 3 is a front view of a machine vision based cylinder densitometer in an embodiment of the present application;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an exploded view of an angle adjustment assembly in an embodiment of the present application;

FIG. 6 is a schematic structural view of a support stand in an embodiment of the present application;

FIG. 7 is a schematic structural view of a positioning and fall arrest device in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a tray positioning device in an embodiment of the present application.

Description of reference numerals: 1. mounting a platform; 2. a mounting frame; 201. a base; 2011. a light source holder; 2012. a first notch; 2013. a second notch; 2014. an ear plate; 202. a lens holder; 2021. a first connecting plate; 2022. connecting blocks; 2023. a lens mount; 203. adjusting the bedplate; 2031. a first side plate; 2032. a second side plate; 3. a mass measuring device; 4. a camera lens; 5. a backlight source; 6. a workpiece; 7. a fixing plate; 8. a support frame; 801. a tray; 802. a vertical plate; 803. a supporting block; 804. a material support; 8041. a material holder; 8042. a trapezoidal block; 8043. a material support body; 9. an adjustment device; 901. an angle adjustment assembly; 9011. a second connecting plate; 9012. a circular truncated cone; 9013. a rotating plate; 9014. a U-shaped plate; 9015. a limiting rod; 9016. a top rod; 902. a level adjustment assembly; 9021. a third connecting plate; 9022. a sliding plate; 9023. a chute; 9024. a stopper; 9025. a limiting plate; 10. cushion blocks; 11. a protective ring; 12. installing a frame; 13. a positioning and fall-prevention device; 1301. a push rod; 1302. a first drive assembly; 13021. a first lead screw motor; 13022. a first slider; 1303. a lifting platform; 1304. a first slide rail seat; 1305. a slide rail; 1306. a first mounting plate; 1307. a second mounting plate; 14. a tray positioning device; 1401. a top plate; 1402. a second drive assembly; 14021. a second lead screw motor; 14022. a second slider; 1403. a second slide rail seat; 1404. a second slide rail; 1405. a first baffle plate; 1406. a second baffle; 15. a sliding rack.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The cylinder density instrument can automatically measure the volume, the mass and the density of a cylindrical workpiece, and meanwhile, the cylinder density instrument also has the functions of automatic configuration of common cylinder pellet parameters, conventional statistical item output, prompting and alarming of various working conditions and the like, the functions are realized through an externally connected computer system, and the embodiment only explains a volume mass measuring device in the cylinder density instrument.

The embodiment of the application discloses cylinder densitometer based on machine vision, refer to fig. 1, cylinder densitometer based on machine vision is including the mounting platform 1 that is used for installing this cylinder densitometer, be provided with mounting bracket 2 on mounting platform 1, be used for carrying out the quality measurement device 3 of measuring quality to work piece 6 and set up the support frame 8 that is used for supporting work piece 6 on quality measurement device 3, be formed with the installation cavity between mounting bracket 2 and the mounting platform 1, be provided with on mounting bracket 2 and be used for carrying out the backlight 5 of projection to work piece 6 and be used for acquireing camera lens 4 of work piece 6 image, quality measurement device 3 sets up in the installation cavity, work piece 6 is located between camera lens 4 and the backlight 5.

The quality measuring device 3 can measure the quality of the workpiece 6, the backlight source 5 can provide high-intensity backlight projection, so that the camera lens 4 can only capture the appearance image of the workpiece 6 under the projection effect of the backlight source 5, the acquired image can be transmitted to the computer for image processing so as to obtain the appearance size of the workpiece 6, meanwhile, the acquired quality of the workpiece 6 is also transmitted to the computer, and finally, the density of the workpiece 6 can be automatically obtained through computer software, so that the workpiece 6 can be automatically weighed and measured in volume and calculated, the measuring speed is high, time and labor are saved, the relative error of the measuring result is small, and the accuracy of the obtained density of the workpiece 6 is improved.

Specifically, the camera lens 4 may be an industrial lens, which has a variety of types and can be selected according to actual use requirements, and in this embodiment, the specific type of the camera lens 4 is not specifically limited. The mass measuring device 3 may be an electronic balance, an electronic scale, or the like, and in the present embodiment, the specific type of the mass measuring device 3 is not particularly limited. In order to fix the mass measurement device 3, a fixing plate 7 is respectively disposed around the mass measurement device 3, the fixing plate 7 is L-shaped, one side plate of the fixing plate 7 is fixedly connected to the mass measurement device 3, and the other side plate of the fixing plate 7 is fixedly connected to the mounting platform 1, and the fixing manner here may be welding, bolting, etc., and in this embodiment, the fixing manner here is not particularly limited.

Referring to fig. 2 and 3, the mounting bracket 2 includes the base 201 that is used for installing backlight 5, and the base 201 includes light source frame 2011, and the transversal trapezoidal form that personally submits of light source frame 2011 has seted up first breach 2012 at the top of light source frame 2011, and the opening direction of first breach 2012 faces up, and the shape of first breach 2012 is trapezoidal, has seted up second breach 2013 in the bottom of light source frame 2011, and the opening direction of second breach 2013 faces down, and the shape of second breach 2013 is trapezoidal. Backlight 5 is provided with two in this application, sets up two through-holes that can supply the embedding of backlight 5 on the light source frame 2011, and two 5 slopes in the backlight and mirror symmetry set up, and the extension line of two 5 axes in the backlight intersects in the top of light source frame 2011. Two inclined side surfaces of the light source rack 2011 are respectively formed with an ear plate 2014, and the bottom surface of the ear plate 2014 is flush with the bottom surface of the light source rack 2011.

In order to facilitate installation of the quality measuring device 3 and the backlight 5, two cushion blocks 10 are arranged on the installation platform 1, the upper ends of the two cushion blocks 10 are fixedly connected with the two ear plates 2014 respectively, the fixedly connecting mode can adopt welding, bolt connection, screw connection and the like, and in the embodiment, the specific fixing mode is not particularly limited. The cushion block 10 is provided with an arched door-shaped opening so as to be convenient for installing the backlight source 5. Fixed blocks are formed on two sides of the cushion block 10 and can be fixed with the mounting platform 1 through bolts or screws. Of course, the spacer 10 may be directly welded and fixed to the mounting platform 1, and in the present embodiment, only the bolt or screw fixation will be described.

Referring to fig. 1 and 3, the number of the camera lenses 4 is two, two inclined side surfaces of the base 201 are respectively connected with a lens frame 202, the lens frame 202 includes a first connecting plate 2021, a connecting block 2022 perpendicular to the connecting plate is fixedly connected to the first connecting plate 2021, a square lens holder 2023 is formed on the connecting block 2022, a through hole for the camera lens 4 to be inserted is formed in the lens holder 2023, and axial extension lines of the two camera lenses 4 intersect below the camera lenses 4. In this embodiment, the included angle between the axes of the camera lens 4 is 90 degrees, so that two sets of diameters and lengths of the workpiece perpendicular to each other can be obtained simultaneously, and a more accurate external dimension of the workpiece can be obtained.

Referring to fig. 3, because the external dimensions of the workpiece 6 are different, the position of the camera lens 4 needs to be adjusted to ensure that an accurate external image of the workpiece 6 is acquired, and in order to facilitate adjustment of the position and angle of the camera lens 4, an adjusting device 9 is arranged on the mounting frame 2. The two inclined side surfaces of the base 201 are respectively fixedly connected with an adjusting platen 203, the adjusting platen 203 comprises a first side plate 2031 and a second side plate 2032 perpendicular to the first side plate 2031, the first side plate 2031 is fixedly connected to the inclined side surface of the base 201, and the opening direction of the adjusting platen 203 faces downward. The adjusting device 9 comprises an angle adjusting component 901 arranged on the base 201 and used for adjusting the included angle between the camera lens 4 and the horizontal plane, a horizontal adjusting component 902 used for adjusting the horizontal position of the camera lens 4 is arranged on the horizontal adjusting component 902, and the lens seat 2023 is indirectly fixed with the adjusting platen 203 through the horizontal adjusting component 902 and the angle adjusting component 901.

Specifically, referring to fig. 4 and 5, the angle adjusting assembly 901 includes a second connecting plate 9011 fixedly connected to the second side plate 2032, a circular truncated cone 9012 is fixedly connected to the second connecting plate 9011, a rotating plate 9013 is rotatably connected to the circular truncated cone 9012, a U-shaped plate 9014 is fixedly connected to the rotating plate 9013, a cavity is formed between the U-shaped plate 9014 and the rotating plate 9013, a limiting rod 9015 penetrates through the U-shaped plate 9014, and an axis of the limiting rod 9015 is parallel to the arrangement direction of the second side plate 2032. An ejector rod 9016 is screwed on the rotating plate 9013, the ejector rod 9016 penetrates through the rotating plate 9013 on the side opposite to the U-shaped plate 9014 and extends into the cavity, and a clamping groove for the ejector rod 9016 to be clamped into is formed in the limiting rod 9015. The rotating plate 9013 is rotated, the camera lens 4 is adjusted to a proper position, and the ejector rod 9016 is screwed, so that the ejector rod 9016 is clamped into a groove formed in the limiting rod 9015, and the rotating plate 9013 is fixed.

The horizontal adjustment assembly 902 includes a third connection plate 9021 fixedly connected to the rotation plate 9013, a sliding plate 9022 is slidably connected to the third connection plate 9021, the first connection plate 2021 is fixedly connected to the sliding plate 9022, a limit plate 9025 is fixedly connected to the third connection plate 9021, a sliding slot 9023 is formed in the limit plate 9025, a limit member 9024 is screwed onto the sliding plate 9022, the limit member 9024 can slide in the sliding slot 9023, and the limit member 9024 can be a jackscrew, a bolt, a screw, or the like. The limiting member 9024 slides in the sliding groove 9023 to drive the sliding plate 9022 to slide, so as to drive the camera lens 4 to move, and when the camera lens 4 is adjusted to a proper position, the limiting member 9024 is screwed to fix the sliding plate 9022.

Referring to fig. 3 and fig. 6, the supporting frame 8 includes a tray 801 rotatably connected to the mass measurement device 3, a vertical plate 802 is fixedly connected to the tray 801, a through hole through which the vertical plate 802 can pass is formed in the base 201, a supporting block 803 is fixedly connected to a side of the vertical plate 802, the supporting block 803 is located in the through hole of the base 201 and abuts against an inner wall of the through hole, a material support 804 is arranged at one end of the vertical plate 802, which is far away from the tray 801, the material support 804 is composed of a material support 804 seat, a trapezoidal block 8042 and a material support 804 body, the material support 804 seat is square, a groove through which the vertical plate 802 can be embedded is formed in one side of the material support 804, the trapezoidal block 8042 is formed at the top of the material support 804 seat, the material support 804 body is formed at the top of the trapezoidal block 8042, and one end of the material support 804 body, which is far away from the trapezoidal block 8042, is formed into an arc-shaped surface, so as to prevent the cylindrical workpiece 6 from rolling. The material support 804 body is of a double-insertion-arm structure, and a gap exists between the two double-insertion arms, so that light generated by the backlight source 5 can completely irradiate on the workpiece 6, and the accuracy of the image of the workpiece 6 acquired by the camera lens 4 is improved.

Be provided with guard circle 11 in one side that base 201 is close to work piece 6, riser 802 wears to establish on guard circle 11, through setting up guard circle 11, can shelter from in order to play the guard action to the through-hole on the base 201.

Referring to fig. 3 and 7, in order to prevent the workpiece 6 from falling off the material holder 804, the cylinder density meter is further provided with a positioning and anti-falling device 13, the positioning and anti-falling device 13 includes a mounting frame 12 fixed on the mounting platform 1, a push rod 1301 for supporting the workpiece 6, and a lifting table 1303 arranged on the mounting frame 12, and the lifting table 1303 is provided with a first driving assembly 1302 for driving the push rod 1301 to move horizontally.

Specifically, the lifting table 1303 may use an electric push rod 1301, an electric cylinder, a scissor lift, etc. as a power source to drive the first driving assembly 1302 and the push rod 1301 to move in the vertical direction.

A first slide rail seat 1304 is fixedly connected to the top of the lifting table 1303, a first slide rail 1305 is fixedly connected to the first slide rail seat 1304, a first mounting plate 1306 and a second mounting plate 1307 are respectively fixedly connected to two ends of the first slide rail 1305, the first mounting plate 1306 is located at one end, close to the workpiece 6, of the first slide rail 1305, and the second mounting plate 1307 is located at one end, far away from the workpiece 6, of the first slide rail 1305. The first driving assembly 1302 comprises a first lead screw motor 13021 fixed on the second mounting plate 1307, one end, away from the first lead screw motor 13021, of an output shaft of the first lead screw motor 13021 is rotatably connected to the first mounting plate 1306 through a bearing, a first sliding block 13022 is in threaded connection with the output shaft of the first lead screw motor 13021, a push rod 1301 is fixedly connected to the first sliding block 13022, and meanwhile, the first sliding block 13022 is in sliding connection with a first sliding rail 1305.

Starting the first lead screw motor 13021, the output shaft of the first lead screw motor 13021 drives the first sliding block 13022 to move along the first guide rail setting direction, and driving the push rod 1301 to move until abutting against the workpiece 6, so as to support the workpiece 6.

Referring to fig. 3 and 8, in order to further improve the stability of the workpiece 6, the cylinder densitometer is further provided with a tray 801 positioning device, the tray 801 positioning device includes a sliding rack 15 fixedly connected to the mounting platform 1 and a top plate 1401 for supporting the vertical plate 802, the sliding rack 15 is provided with a second driving assembly 1402 for driving the top plate 1401 to move, the sliding rack 15 is fixedly connected with a second sliding rail seat 1403, the second sliding rail seat 1403 is fixedly connected with a second sliding rail 1404, two ends of the second sliding rail 1404 are respectively fixedly connected with a first baffle 1405 and a second baffle 1406, the first baffle 1405 is located at one end of the second sliding rail 1404 close to the workpiece 6, and the second baffle 1406 is located at one end of the second sliding rail 1404 far from the workpiece 6. A second lead screw motor 14021 is fixed on the second baffle 1406, one end, far away from the second lead screw motor 14021, of an output shaft of the second lead screw motor 14021 is rotatably connected to the first baffle 1405 through a bearing, a second slider 14022 is in threaded connection with the output shaft of the second lead screw motor 14021, the top plate 1401 is fixedly connected to the second slider 14022, and meanwhile, the second slider 14022 is in sliding connection with the second slide rail 1404.

The second screw motor 14021 is started, the output shaft of the second screw motor 14021 drives the second slide block 14022 to move along the second guide rail arrangement direction, the top plate 1401 is driven to move until the top plate abuts against the vertical plate 802, and meanwhile, under the auxiliary action of the supporting block 803, the vertical plate 802 is supported, and the vertical plate 802 is prevented from toppling over.

The implementation principle of the cylinder density meter based on machine vision in the embodiment of the application is as follows: the method comprises the steps of firstly starting a second lead screw motor 14021, driving a top plate 1401 to move until the top plate 1401 abuts against a vertical plate 802 to support the vertical plate 802, then placing a workpiece 6 on a material support 804, starting a first lead screw motor 13021, driving a push rod 1301 to move until the push rod 1301 abuts against the workpiece 6 to support the workpiece 6 by the first lead screw motor 13021, adjusting an angle adjusting component 901 and a horizontal adjusting component 902, enabling a camera lens 4 to obtain the most accurate appearance image of the workpiece 6, starting a quality measuring device 3, automatically calculating the volume of the workpiece 6 through a computer, and further obtaining the density of the workpiece 6. This cylinder densimeter can carry out automatic weighing and survey the volume and calculate the density to work piece 6 simultaneously, and measuring speed is fast and measuring result relative error is little, has improved the accuracy of the 6 densities of work piece that obtain, labour saving and time saving.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a cylinder density appearance based on machine vision which characterized in that: the device comprises an installation platform (1), an installation frame (2) arranged on the installation platform (1), a quality measuring device (3) arranged on the installation platform (1) and used for measuring the quality of a workpiece (6), a backlight source (5) arranged on the installation frame (2) and used for projecting the workpiece (6), and a camera lens (4) arranged on the installation frame (2) and used for collecting an image of the workpiece (6);

a support frame (8) for supporting a workpiece (6) is arranged on the quality measuring device (3), and the workpiece (6) is positioned between the backlight source (5) and the camera lens (4);

the mounting rack (2) is further provided with an adjusting device (9) used for adjusting the angle and the position of the camera lens (4).

2. The machine-vision based cylinder density gauge of claim 1, wherein: the camera lens (4) are arranged in two numbers, and an included angle between the axes of the two camera lenses (4) is 90 degrees.

3. The machine-vision-based cylinder density instrument of claim 1, wherein: the adjusting device (9) comprises an angle adjusting assembly (901) for adjusting the angle of the camera lens (4).

4. The machine-vision based cylinder density gauge of claim 3, wherein: the angle adjusting assembly (901) comprises a round platform (9012) fixedly connected onto the mounting frame (2), a rotating plate (9013) is connected onto the round platform (9012) in a rotating mode, a U-shaped plate is formed on one side of the rotating plate (9013), a limiting rod (9015) penetrates through the U-shaped plate, a push rod (9016) penetrates through the rotating plate (9013), and a clamping groove for inserting the push rod (9016) is formed in the limiting rod (9015).

5. The machine-vision-based cylinder density instrument of claim 4, wherein: the adjusting device (9) further comprises a horizontal adjusting component (902) for adjusting the horizontal position of the camera lens (4).

6. The machine-vision-based cylinder density instrument of claim 5, wherein: the horizontal adjusting assembly (902) comprises a third connecting plate (9021) fixedly connected to the rotating plate (9013), a sliding plate (9022) is connected to the third connecting plate (9021) in a sliding mode, a limiting plate is arranged on the third connecting plate (9021), a sliding groove (9023) is formed in the limiting plate, a limiting part (9024) is arranged on the sliding plate (9022), and the limiting part (9024) can slide in the sliding groove (9023).

7. The machine-vision based cylinder density gauge of claim 1, wherein: the support frame (8) comprises a material support (804), the material support (804) is of a double-insertion-arm structure, and a gap exists between the two double-insertion arms.

8. The machine-vision-based cylinder density instrument of claim 7, wherein: the cylinder density instrument based on the machine vision further comprises a tray positioning device (14) used for supporting the supporting frame (8), wherein the tray positioning device (14) comprises a sliding table frame (15) and a top plate (1401) used for supporting the supporting frame (8), and a second driving assembly (1402) used for driving the top plate (1401) to move horizontally is arranged on the sliding table frame (15).

9. The machine-vision based cylinder density gauge of claim 1, wherein: the cylinder densimeter based on machine vision further comprises a positioning and falling-prevention device (13) used for supporting the workpiece (6), wherein the positioning and falling-prevention device (13) comprises an installation frame (12) and a push rod (1301) used for supporting the workpiece (6), and a first driving assembly (1302) used for driving the push rod (1301) to move horizontally is arranged on the installation frame (12).

10. The machine-vision based cylinder density gauge of claim 9, wherein: the positioning and fall-prevention device (13) further comprises a lifting table (1303) for driving the first driving assembly (1302) and the push rod (1301) to vertically move.

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