Online bulk material detection device

Abstract

The utility model discloses an on-line bulk material detection device. The device comprises a first conveying mechanism, a second conveying mechanism and a detection mechanism, the second conveying mechanism is adjacent to the first conveying mechanism, the conveying direction of the second conveying mechanism and the conveying direction of the first conveying mechanism are located in the same axis direction, and the horizontal position of the second conveying mechanism is lower than that of the first conveying mechanism; the conveying speed of the second conveying mechanism is different from that of the first conveying mechanism, so that the to-be-detected product on the first conveying mechanism rolls on the second conveying mechanism after falling to the second conveying mechanism; and the horizontal position of the imaging mechanism is higher than that of the second conveying mechanism. According to the utility model, images of different surfaces of bulk products can be shot, and the imaging mechanism is arranged on the upper side of the conveying mechanism, so that the influence of sundries on the image quality is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field further relates to an online bulk material detection device. BACKGROUND

[0002] At present, the belt conveyor is used in the field of online detection, which can realize high-speed real-time online detection, and can use visible light, near infrared, short wave infrared and other multiple spectra to detect food and other industrial products. These spectra have the following advantages: visible light uses the principle of optical reflection of the surface of the detected object, which can detect the appearance defects or flaws of the surface of the detected object; short wave infrared uses the principle of different thermal radiation of different components of the detected object in the short wave infrared band, which can realize component analysis of the near surface of the object.

[0003] In actual industrial applications, visible light and short wave infrared can only detect the surface of the detected object because the detected object is transported by the belt conveyor. Some existing technologies use two conveyors, and a second viewing angle is installed below the two conveyors. However, the camera located on the lower side is prone to accumulate debris, which affects the image quality. In addition, the process of falling debris also affects the image quality, especially for some bulk products with water and chipping.

[0004] Therefore, it is necessary to design an online bulk material detection device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In view of the above technical problems, the purpose of the utility model is to provide an online bulk material detection device, which can take images of different surfaces of bulk products, and the imaging mechanism is arranged on the upper side of the conveying mechanism, which avoids the influence of debris on image quality.

[0006] In order to achieve the above purpose, the utility model provides an online bulk material detection device, which comprises:

[0007] The first conveying mechanism is used for conveying the detected product;

[0008] The second conveying mechanism is arranged adjacent to the first conveying mechanism, the conveying direction of the second conveying mechanism is in the same axial direction as the conveying direction of the first conveying mechanism, the horizontal position of the second conveying mechanism is lower than that of the first conveying mechanism, and the conveying speed of the second conveying mechanism is different from that of the first conveying mechanism, so that the detected product on the first conveying mechanism will roll on the second conveying mechanism after falling onto the second conveying mechanism;

[0009] an imaging mechanism, a horizontal position of the imaging mechanism being higher than a horizontal position of the second conveying mechanism, the imaging mechanism being configured to image a first surface of the product under test and a second surface opposite to the first surface.

[0010] In some embodiments, the first conveying mechanism comprises a first conveying belt, and a first motor connected to the first conveying belt, the first motor being configured to drive the first conveying belt to move, the product under test being placed above the first conveying belt.

[0011] In some embodiments, the second conveying mechanism comprises a second conveying belt, and a second motor connected to the second conveying belt, the second motor being configured to drive the second conveying belt to move, the product under test falling above the second conveying belt.

[0012] In some embodiments, the first conveying mechanism further comprises a first adjusting member connected to the first conveying belt of the first conveying mechanism, the first adjusting member being configured to adjust a horizontal position of the first conveying belt.

[0013] In some embodiments, a conveying speed of the first conveying mechanism is adjustable.

[0014] In some embodiments, an angle of the first conveying mechanism is adjustable.

[0015] In some embodiments, the second conveying mechanism further comprises a second adjusting member connected to the second conveying belt of the second conveying mechanism, the second adjusting member being configured to adjust a horizontal position of the second conveying belt.

[0016] In some embodiments, a conveying speed of the second conveying mechanism is adjustable.

[0017] In some embodiments, the imaging mechanism comprises a first imaging portion and a second imaging portion, the first imaging portion and the second imaging portion being arranged at a preset angle, and both being arranged above the second conveying mechanism, such that the first imaging portion faces an entrance end of the second conveying mechanism, and the second imaging portion faces an exit end of the second conveying mechanism.

[0018] In some embodiments, the first imaging portion comprises at least one first camera, a shooting angle of the first camera being adjustable.

[0019] The second imaging portion comprises at least one second camera, a shooting angle of the second camera being adjustable.

[0020] In some embodiments, the imaging mechanism further comprises:

[0021] An image processing unit is connected with the first imaging unit and the second imaging unit respectively, and is used for processing images taken by the first imaging unit and the second imaging unit.

[0022] In some embodiments, the imaging mechanism further comprises:

[0023] A transparent baffle is arranged between the first imaging unit, the second imaging unit and the second conveying mechanism, and is used for protecting camera lenses of the first imaging unit and the second imaging unit.

[0024] A light source is arranged on the transparent baffle, and is used for supplementing light for photographing of the first imaging unit and the second imaging unit.

[0025] In some embodiments, the imaging mechanism further comprises:

[0026] A third imaging unit comprises an X-ray source and an X-ray linear array detector, the X-ray source is located above the second conveying mechanism, the X-ray linear array detector is located below the second conveying mechanism, and the X-ray source and the X-ray linear array detector are arranged correspondingly and used for X-ray transmission imaging of the product to be detected.

[0027] In some embodiments, further comprising:

[0028] A rejection mechanism is arranged at an end of the second conveying mechanism away from the first conveying mechanism, and is used for rejecting products that are detected as unqualified.

[0029] Compared with the prior art, the online bulk material detection device has the following beneficial effects:

[0030] In the utility model, the first conveying mechanism and the second conveying mechanism are arranged to have a certain height difference and speed difference, when the product to be detected falls from the first conveying mechanism into the second conveying mechanism, there is a certain tumbling, so that the imaging mechanism can take different surfaces of the product to be detected; the device ingeniously causes the rolling of the bulk material itself, so that the first imaging unit and the second imaging unit above the two conveying mechanisms can take two opposite surfaces of the bulk material, thereby improving the detection rate of surface defects of the bulk material, and avoiding the influence of sundries on image quality. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in an explicit and easy-to-understand manner in combination with the preferred embodiments and the attached drawings.

[0032] Fig. 1is a simple diagram of the online bulk material detection device of the preferred embodiment of the utility model;

[0033] Fig. 2 is a three-dimensional structure schematic diagram of the online bulk material detection device of the preferred embodiment of the utility model;

[0034] Fig. 3 is the front view of the online bulk material detection device of the preferred embodiment of the utility model.

[0035] Explanation of the attached drawings:

[0036] The first conveying mechanism 1, the second conveying mechanism 2, the imaging mechanism 3, the first imaging part 31, the second imaging part 32, the third imaging part 33, the image processing part 34, the transparent baffle 35, the light source 36, the rejection mechanism 4, the rack 5. Specific implementation

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the specific implementation of the utility model will be described below with reference to the attached drawings. Obviously, the drawings described below are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor, and other implementation manners can also be obtained.

[0038] In order to make the drawing simple, only the parts related to the utility model are shown in each drawing, and they do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one" situation.

[0039] It should be further understood that the term "and / or" used in the specification and the attached claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0040] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In one embodiment, referring to the description attached Figs. 1-3 The online bulk material detection device provided by the utility model, comprising: first conveying mechanism 1, second conveying mechanism 2 and imaging mechanism 3, first conveying mechanism 1 is used for conveying the product to be measured;Second conveying mechanism 2 is arranged adjacent to first conveying mechanism 1, the conveying direction of second conveying mechanism 2 and the conveying direction of first conveying mechanism 1 are in the same axial direction, the horizontal position of second conveying mechanism 2 is lower than the horizontal position of first conveying mechanism 1, and the conveying speed of second conveying mechanism 2 is different from the conveying speed of first conveying mechanism 1, so that the product to be measured on first conveying mechanism 1 falls to second conveying mechanism 2 and rolls on second conveying mechanism 2;The horizontal position of imaging mechanism 3 is higher than the horizontal position of second conveying mechanism 2, and imaging mechanism 3 is used for imaging the first surface of the product to be measured and the second surface opposite to the first surface.

[0043] In the embodiment, by setting a certain height difference and speed difference between first conveying mechanism 1 and second conveying mechanism 2, the product to be measured falls into second conveying mechanism 2 from first conveying mechanism 1 and rolls on second conveying mechanism 2, so that imaging mechanism 3 can shoot different surfaces of the product to be measured;The device ingeniously causes the rolling of bulk material itself, so that the imaging mechanism 3 arranged above the conveying mechanism can shoot two opposite surfaces of the bulk material, thereby improving the detection rate of surface defects of bulk material and avoiding the influence of sundries on image quality.

[0044] In one embodiment, referring to the description attached Figs. 1-3 The online bulk material detection device further comprises: a rack 5, the rack 5 has a conveying channel, the first conveying mechanism 1 and the second conveying mechanism 2 are arranged in the conveying channel and arranged along the length direction of the conveying channel. The first conveying mechanism 1 comprises a first conveying belt, a first motor connected with the first conveying belt, the first motor is used for driving the first conveying belt to move, and the product to be measured is arranged above the first conveying belt. The second conveying mechanism comprises a second conveying belt, a second motor connected with the second conveying belt, the second motor is used for driving the second conveying belt to move, and the product to be measured falls above the second conveying belt.

[0045] Further, the conveying speed of the first conveying mechanism 1 is adjustable, the pitch angle of the first conveying mechanism 1 is also adjustable, the first conveying mechanism 1 further comprises a first adjusting member connected with the first conveying belt of the first conveying mechanism 1, for adjusting the horizontal position of the first conveying belt; the conveying speed of the second conveying mechanism 2 is adjustable, the second conveying mechanism 2 further comprises a second adjusting member connected with the second conveying belt of the second conveying mechanism 2, for adjusting the horizontal position of the second conveying belt. The speed adjustment of the first conveying mechanism 1 and the second conveying mechanism 2 can be achieved by adjusting the output size of the motor; while the horizontal position or the pitch angle of the first conveying mechanism 1 and the second conveying mechanism 2 can be adjusted by using lifting screws, lifting motors and the like, of course, other structures or devices capable of achieving the above adjustment functions can also be used, which will not be described in detail here.

[0046] The first conveying mechanism 1 is arranged at the inlet end of the conveying channel, and functions to connect the front production line, accelerate the to-be-tested product, and reach a high speed level. The first conveying mechanism 1 is slightly higher than the second conveying mechanism 2, so that even the to-be-tested product with small size can smoothly slide into the second conveying mechanism 2.

[0047] The second conveying mechanism 2 is located at the rear of the first conveying mechanism 1, and there is a certain speed difference between the second conveying mechanism 2 and the first conveying mechanism 1, and the second conveying mechanism 2 is lower than the first conveying mechanism 1 by a certain height; the speed difference between the first conveying mechanism 1 and the second conveying mechanism 2 can make the to-be-tested product roll after falling into the second conveying mechanism 2; the second conveying mechanism 2 is lower than the first conveying mechanism 1 by a certain height, for ensuring that the to-be-tested product with small size can also slide onto the second conveying mechanism 2, without falling into the gap between the first conveying mechanism 1 and the second conveying mechanism 2, and also promoting the to-be-tested product to roll.

[0048] By adjusting the height of the first conveying mechanism 1 and the second conveying mechanism 2 through the adjusting member, the on-line bulk material detection device can detect to-be-tested products with different characteristics, for example, the sticky bulk material has poor rolling property, the height difference between the first conveying mechanism 1 and the second conveying mechanism 2 is adjusted to be large, so as to increase the rolling property; the dry bulk material has good rolling property, the height difference between the first conveying mechanism 1 and the second conveying mechanism 2 is adjusted to be small, so as to reduce the rolling property. The device can cleverly cause the bulk material to roll by itself, so that the imaging mechanism 3 arranged above the conveying mechanism can shoot two opposite surfaces of the bulk material, thereby improving the detection rate of the surface defects of the bulk material, and avoiding the influence of impurities on the image quality.

[0049] It should be noted that the specific structure of the first conveying mechanism 1 and the second conveying mechanism 2 is described in correspondence with the drawings of the specification, and in actual use, other structures or devices can also be selected according to actual needs as long as the above functions can be realized, and here, only in order to better illustrate the utility model, it should not constitute a limitation on the utility model.

[0050] In one embodiment, reference is made to the drawings of the specification Figs. 1-3 The imaging mechanism 3 includes a first imaging part 31 and a second imaging part 32, which are arranged at a preset angle and are arranged above the second conveying mechanism 2, so that the first imaging part 31 faces the inlet end of the second conveying mechanism 2, and the second imaging part 32 faces the outlet end of the second conveying mechanism 2.

[0051] The first imaging part 31 includes at least one first camera, such as a visible light or short-wave infrared array camera, and the shooting angle of the first camera is adjustable; the second imaging part 32 includes at least one second camera, such as a visible light or short-wave infrared array camera, and the shooting angle of the second camera is adjustable.

[0052] Further, the imaging mechanism 3 further includes an image processing part 34 connected with the first imaging part 31 and the second imaging part 32, respectively, and the image processing part 34 is used for processing the images captured by the first imaging part 31 and the second imaging part 32. The image processing part 34 processes two images of the first imaging part 31 and the second imaging part 32, and uses the image of the first imaging part 31 to identify whether the front upper side appearance of the product to be tested is normal, and uses the image of the second imaging part 32 to identify whether the rear upper surface appearance of the product to be tested is normal.

[0053] The first imaging part 31 is located above the second conveying mechanism 2, and the core is a visible light or short-wave infrared array camera, the camera lens faces downward and is inclined to the inlet of the second conveying mechanism 2, and the front upper surface of the product to be tested is shot; the visible light or short-wave infrared image generated by the first imaging part 31 is sent to the image processing part 34 for subsequent processing.

[0054] The second imaging part 32 is also located above the second conveying mechanism 2, but in front of the first imaging part 31, and the core is a visible light or short-wave infrared array camera, the camera lens faces downward and is inclined to the outlet of the second conveying mechanism 2 to shoot the rear upper surface of the product to be tested; the visible light or short-wave infrared image generated by the second imaging part 32 is sent to the image processing part 34 for subsequent processing.

[0055] Due to the height difference and speed difference between the first conveying mechanism 1 and the second conveying mechanism 2, the product to be tested will roll and there is an angle difference between the cameras; the speed of the first conveying mechanism 1 and the second conveying mechanism 2 can be adjusted independently, and the angle of each camera can also be adjusted independently, so that although the second imaging part 32 shoots the back upper surface of the product to be tested, by adjusting the angle difference of the cameras and the speed difference of the conveying mechanisms, the rolling of the product to be tested is caused, and the second imaging part 32 actually shoots the back of the surface shot by the first imaging part 31, thereby realizing the overall shooting of the product to be tested.

[0056] In the embodiment, the first imaging part 31 and the second imaging part 32 have a certain angle difference when working, and further, the height difference and the speed difference of the first conveying mechanism 1 and the second conveying mechanism 2 are matched, so that by adjusting the three points, the two surfaces of different kinds of bulk materials can be shot; for example, the viscosity of the bulk material is poor in rolling, the height of the first conveying mechanism 1 can be adjusted to be high to increase the rolling; the dry bulk material has good rolling, the height of the first conveying mechanism 1 can be adjusted to be low to reduce the rolling; the rolling of the bulk material is caused by the above structure, so that the two cameras above the second conveying mechanism 2 can shoot the two surfaces of the bulk material close to the opposite sides, thereby improving the detection rate of the surface defects of the bulk material.

[0057] Further, the imaging mechanism 3 further comprises a transparent baffle 35 and a light source 36, the transparent baffle 35 is arranged between the first imaging part 31, the second imaging part 32 and the second conveying mechanism 2, and the transparent baffle 35 is used for protecting the camera lens of the first imaging part 31 and the camera lens of the second imaging part 32 to avoid foreign matter pollution. The light source 36 is arranged on the transparent baffle 35 or the periphery of the transparent baffle 35, and the light source 36 is used for supplementing light for the shooting of the first imaging part 31 and the second imaging part 32 to improve the image quality, and the light source 36 can be a light supplementing lamp or the like.

[0058] Further, the imaging mechanism 3 further comprises a third imaging part 33, the third imaging part 33 comprises an X-ray source and an X-ray linear array detector, the X-ray source is located above the second conveying mechanism 2, and the X-ray linear array detector is located below the second conveying mechanism 2, the X-ray source and the X-ray linear array detector are correspondingly arranged, and are used for X-ray transmission imaging of the product to be tested. The third imaging part 33 is connected with the image processing part 34, and the generated X-ray image is sent to the image processing part 34, which is used for imaging detection of internal foreign matters and defects of the product to be tested.

[0059] The third imaging part 33 is arranged in the interior of the rack 5, the interior of the rack 5 is divided into a metal area and a non-metal area, the third imaging part 33 is arranged in the non-metal area, which is used for reducing the obstruction or absorption of X-rays by the metal area, ensuring the X-ray imaging quality, and effectively improving the detection efficiency.

[0060] And wherein the metal region and non-metal region is well understood, this area has metal material is metal region, no metal material is non-metal region, in general, X-ray transmission direction can only have carbon fiber plate or other light material, to ensure the penetration performance of X-ray; of course, in other embodiments, there are other embodiments to achieve the guarantee for the penetration performance of X-ray, not much more here.

[0061] For the application scene of edge detection, the edge of some products (such as plastic packaging) is very thin, and X-ray cannot effectively image, at this time, the visible light image of the first imaging part 31 or the second imaging part 32 is used to find the edge position, and the X-ray image of the corresponding position is used to identify and detect whether the edge has clamping material.

[0062] Further, the on-line bulk material detection device further comprises a rejection mechanism 4, which is arranged at the end of the second conveying mechanism 2 away from the first conveying mechanism 1, and is used for rejecting unqualified products.

[0063] For example, the rejection mechanism 4 comprises a plurality of air nozzles, which are arranged above the conveying mechanism and face the conveying mechanism, and are used for blowing and rejecting defective products in the products to be tested; the air nozzles can be evenly arranged along the conveying path of the products to be tested, and blowing and rejection can be performed in time after each detection, so as to reduce the subsequent work pressure. Of course, the rejection mechanism 4 can also use other rejection methods.

[0064] By setting the air nozzles to blow and reject defective products in the products to be tested, the entire detection line is more automated, and the products to be tested can be directly conveyed to the discharge area after detection without manual sorting, saving labor costs.

[0065] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0066] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. An on-line bulk material detection apparatus, characterized by, The online bulk material detection device comprises: a first conveying mechanism for conveying the products to be detected; a second conveying mechanism arranged adjacent to the first conveying mechanism, the conveying direction of the second conveying mechanism is in the same axial direction as the conveying direction of the first conveying mechanism, the horizontal position of the second conveying mechanism is lower than the horizontal position of the first conveying mechanism, and the conveying speed of the second conveying mechanism is different from the conveying speed of the first conveying mechanism, so that when the products to be detected on the first conveying mechanism fall onto the second conveying mechanism, the products to be detected will roll on the second conveying mechanism; an imaging mechanism, the horizontal position of the imaging mechanism is higher than the horizontal position of the second conveying mechanism, and the imaging mechanism is used for imaging the first surface of the products to be detected and the second surface opposite to the first surface.

2. The online bulk material detection device according to claim 1, wherein the first conveying mechanism comprises a first conveying belt and a first motor connected to the first conveying belt, the first motor is used for driving the first conveying belt to move, and the products to be detected are arranged above the first conveying belt.

3. The online bulk material detection device according to claim 1, wherein the second conveying mechanism comprises a second conveying belt and a second motor connected to the second conveying belt, the second motor is used for driving the second conveying belt to move, and the products to be detected fall above the second conveying belt.

4. The online bulk material detection device according to claim 2 or 3, wherein the first conveying mechanism further comprises a first adjusting member connected to the first conveying belt of the first conveying mechanism, which is used for adjusting the horizontal position of the first conveying belt; and / or, the conveying speed of the first conveying mechanism is adjustable; and / or, the angle of the first conveying mechanism is adjustable; and / or, the second conveying mechanism further comprises a second adjusting member connected to the second conveying belt of the second conveying mechanism, which is used for adjusting the horizontal position of the second conveying belt; and / or, the conveying speed of the second conveying mechanism is adjustable.

5. The online bulk material detection device according to claim 1, wherein the imaging mechanism comprises a first imaging part and a second imaging part, the first imaging part and the second imaging part are arranged at a preset angle and are arranged above the second conveying mechanism, so that the first imaging part faces the inlet end of the second conveying mechanism and the second imaging part faces the outlet end of the second conveying mechanism.

6. The online bulk material detection device according to claim 5, wherein the first imaging part comprises at least one first camera, and the shooting angle of the first camera is adjustable; the second imaging part comprises at least one second camera, and the shooting angle of the second camera is adjustable.

7. The online bulk material detection apparatus of claim 5, wherein, The imaging mechanism further comprises: an image processing part connected to the first imaging part and the second imaging part respectively, and the image processing part is used for processing the images taken by the first imaging part and the images taken by the second imaging part.

8. The online bulk material detection apparatus of claim 5, wherein, The imaging mechanism further comprises: A transparent baffle is arranged between the first imaging unit, the second imaging unit and the second conveying mechanism, and is used to protect the camera lens of the first imaging unit and the camera lens of the second imaging unit; A light source is arranged on the transparent baffle, and is used to supplement light for shooting of the first imaging unit and the second imaging unit.

9. An in-line bulk material detection apparatus according to any one of claims 5 to 8, wherein, The imaging mechanism further comprises: A third imaging unit, which comprises an X-ray source and an X-ray line array detector, the X-ray source is located above the second conveying mechanism, and the X-ray line array detector is located below the second conveying mechanism, the X-ray source and the X-ray line array detector are arranged correspondingly, and are used to perform X-ray transmission imaging on the product to be detected.

10. The online bulk material detection apparatus of claim 1, wherein, Further comprising: A rejection mechanism is arranged at one end of the second conveying mechanism away from the first conveying mechanism, and is used to reject the product that fails to meet the detection requirements.

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