X-ray foreign matter detector with single radiation source for secondary screening

Abstract

The invention discloses a single-radiation-source secondary screening X-ray foreign matter detection machine which comprises a box body, an upper-layer material conveying mechanism and a lower-layer material conveying mechanism, the upper-layer material conveying mechanism and the lower-layer material conveying mechanism are arranged in the box body, and the upper-layer material conveying mechanism and the lower-layer material conveying mechanism are distributed in a staggered mode in the Z-axis direction; an X-ray emission source is arranged on the box body, the upper-layer X-ray sensor box and the lower-layer X-ray sensor box are located within the maximum irradiation angle range of the X-ray emission source, a first removing part and a second removing part are arranged on the box body, the first removing part is used for sorting materials located on the upper-layer material conveying mechanism to a first channel and a second channel, and the second removing part is used for sorting the materials located on the lower-layer material conveying mechanism to a second channel. The first channel conveys the materials to the lower-layer material conveying mechanism; and the second removing part is used for sorting the materials on the lower-layer material conveying mechanism to the third channel and the fourth channel. According to the invention, one X-ray emission source is adopted, so that the function of secondary check of the materials can be realized, and the function of classification of three materials can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material sorting, in particular to an X-ray foreign matter detection machine with single source and secondary screening. BACKGROUND

[0002] The X-ray foreign matter detection machine generates X-rays through the device and applies the penetration ability of X-rays, collects photoelectric technology, computer digital signal processing technology, etc., distinguishes, extracts and discriminates the information of the image through vision and pattern recognition, and finally realizes the detection function of metal, non-metal foreign matter and missing or damaged packaging mixed in the detected object. The X-ray foreign matter detection machine reduces the impurity rate of the detected object by identifying and removing foreign matter. At present, the X-ray foreign matter detection machine can only remove foreign matter once with one X-ray source. For the detected object with high impurity rate, only one identification and removal cannot detect all foreign matters. To realize secondary selection of the X-ray machine, at least two X-ray sources are needed, and the existing technology can only be used for identifying foreign matter and cannot be used for classifying multiple materials. SUMMARY

[0003] To solve the technical problems in the background art, the present application provides an X-ray foreign matter detection machine with single source and secondary screening.

[0004] The X-ray foreign matter detection machine with single source and secondary screening provided by the present application comprises a box body, an upper material conveying mechanism arranged in the box body, and a lower material conveying mechanism arranged below the upper material conveying mechanism, the upper material conveying mechanism and the lower material conveying mechanism both convey materials in the X-axis direction, and the upper material conveying mechanism and the lower material conveying mechanism are distributed in the Z-axis direction.

[0005] An X-ray emitting source is arranged on the box body, the light emitted by the X-ray emitting source has a part irradiating the A area of the upper material conveying mechanism and a part irradiating the B area of the lower material conveying mechanism, an upper X-ray sensor box is arranged below the A area, and a lower X-ray sensor box is arranged below the B area.

[0006] A first removing part and a second removing part are arranged on the box body, the first removing part is used for sorting the materials on the upper material conveying mechanism to a first channel and a second channel, and the first channel conveys the materials to the lower material conveying mechanism.

[0007] The second removing part is used for sorting the materials on the lower material conveying mechanism to a third channel and a fourth channel.

[0008] As a further optimized scheme of the present application, the secondary selection of the materials is realized.

[0009] As a further optimization of the present invention, the X-ray emission source is located away from the lower X-ray sensor box relative to the upper X-ray sensor box in the Z-axis direction.

[0010] As a further optimization of the present invention, when the good material is re-selected, the defective material on the upper material conveying mechanism is discharged through the second channel, the defective material on the lower material conveying mechanism is discharged through the third channel, and the good material on the lower material conveying mechanism is discharged through the fourth channel.

[0011] When re-sorting defective materials, the good materials of the upper material conveying mechanism are discharged through the second channel, the defective materials of the lower material conveying mechanism are discharged through the third channel, and the good materials of the lower material conveying mechanism are discharged through the fourth channel.

[0012] As a further optimization of the present invention, it is used for sorting three types of materials.

[0013] As a further optimization of the present invention, the X-ray emission source is located in the Z-axis direction relative to the upper X-ray sensor box and close to the middle of the lower X-ray sensor box.

[0014] As a further optimization of the present invention, the first material is discharged through the second channel, the second material is discharged through the third channel, and the third material is discharged through the fourth channel.

[0015] As a further optimization of the present invention, the material conveying direction of the upper material conveying mechanism is opposite to the material conveying direction of the lower material conveying mechanism;

[0016] The box is equipped with a material blocking slide plate, which is located above the lower material conveying mechanism and is used to block the material discharged from the first channel. The material discharged from the first channel falls onto the lower material conveying mechanism.

[0017] As a further optimization of the present invention, the material blocking slide plate gradually tilts downward along the material conveying direction of the lower material conveying mechanism.

[0018] As a further optimization of the present invention, the material blocking slide includes a bottom support plate and an elastic plate mounted on the bottom support plate. The elastic plate is provided with a plurality of "V"-shaped protrusions, which are distributed along the width direction of the lower material conveying mechanism, and a guide channel is formed between any two adjacent protrusions.

[0019] In this invention, the proposed single-source secondary screening X-ray foreign object detection machine uses one X-ray emission source to achieve the function of secondary screening; the secondary screening can be divided into finished product secondary screening and defective product secondary screening. Finished product secondary screening can improve the screening rate, and defective product secondary screening can reduce the carry-out ratio of finished products; this X-ray foreign object detection machine can use X-ray technology for material classification.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a diagram showing the positional relationship between the X-ray source and the upper and lower X-ray sensor boxes in Embodiments 1 and 2 of the present invention.

[0023] Figure 3 This is a left view of the material-blocking sliding plate inside the box of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0026] Figure 6 This is a diagram showing the positional relationship between the X-ray source and the upper and lower X-ray sensor boxes in Embodiment 3 of the invention.

[0027] Figure 7 For the present invention Figure 1 A magnified view of a portion of area A;

[0028] In the diagram: 1. Box body; 2. Upper material conveying mechanism; 3. Lower material conveying mechanism; 4. X-ray emission source; 5. Upper X-ray sensor box; 6. Lower X-ray sensor box; 7. First rejection component; 8. Second rejection component; 9. First channel; 10. Second channel; 11. Third channel; 12. Fourth channel; 13. Material blocking slide plate; 130. Bottom support plate; 131. Elastic plate; 132. Protrusion. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] Example 1

[0031] As Figure 1 - Figure 3 The single source secondary screening X-ray foreign matter detector shown in the figure is used for rechecking good materials, and the detector comprises a box body 1, an upper layer material conveying mechanism 2 arranged in the box body 1, and a lower layer material conveying mechanism 3 arranged below the upper layer material conveying mechanism 2. The upper layer material conveying mechanism 2 and the lower layer material conveying mechanism 3 can be a belt driving mechanism in the prior art. The upper layer material conveying mechanism 2 and the lower layer material conveying mechanism 3 both convey materials in the X-axis direction, and are distributed in the Z-axis direction.

[0032] An X-ray emitting source 4 is arranged on the box body 1. The light emitted by the X-ray emitting source 4 has a part irradiating the A area of the upper layer material conveying mechanism 2 and a part irradiating the B area of the lower layer material conveying mechanism 3. An upper layer X-ray sensor box 5 is arranged below the A area, and a lower layer X-ray sensor box 6 is arranged below the B area. The upper layer X-ray sensor box 5 and the lower layer X-ray sensor box 6 are both mounted on the box body 1, as shown in the figure. Figure 2 The upper layer X-ray sensor box 5 and the lower layer X-ray sensor box 6 are within the maximum irradiation angle range of the X-ray emitting source 4, and the source angle used by the upper layer X-ray sensor box 5 and the source angle used by the lower layer X-ray sensor box 6 are less than the maximum irradiation angle of the X-ray emitting source 4.

[0033] First and second removing members 7 and 8 are arranged on the box body 1. The first and second removing members 7 and 8 can be spray valves in the prior art. The first removing member 7 is used for removing sub-materials on the upper layer material conveying mechanism 2 to a second channel 10. The good materials on the upper layer material conveying mechanism 2 are moved to a first channel 9 in a parabolic manner, and the first channel 9 conveys the materials to the lower layer material conveying mechanism 3. According to the detection result of the lower layer X-ray sensor box 6 of the B area, the second removing member 8 removes sub-materials to a third channel 11, and the good materials are discharged through a fourth channel 12. It should be noted that, like the prior art, the discharge outlets of the second channel 10, the third channel 11 and the fourth channel 12 are all provided with material receiving boxes (not shown in the figure). In this embodiment, the second channel 10 is close to the discharge end of the upper layer material conveying mechanism 2 relative to the first channel 9, so as to facilitate sorting. The second channel 10 gradually inclines downward from the side close to the upper layer material conveying mechanism 2, and the first channel 9 gradually inclines from top to bottom to the direction close to the lower layer material conveying mechanism 3.

[0034] Similar to existing technologies, the mixed materials are fed into the upper material conveying mechanism 2 via a feeder. When the materials are conveyed to area A, they are irradiated by X-rays and the upper X-ray sensor box 5 receives the information. The first rejection component 7 rejects the materials to the second channel 10 based on the information detected by the upper X-ray sensor box 5. The materials in the first channel 9 are conveyed to the lower material conveying mechanism 3. The lower material conveying mechanism 3 conveys the materials to area B, where they are irradiated by X-rays and the lower X-ray sensor box 6 receives the information. The second rejection component 8 rejects the materials to the third channel 11 based on the information detected by the lower X-ray sensor box 6. The materials that leave the lower material conveying mechanism 3 in a parabolic motion enter the fourth channel 12.

[0035] like Figure 2 Preferably, the X-ray emission source 4 is located away from the lower X-ray sensor box 6 in the Z-axis direction relative to the upper X-ray sensor box, which reduces the maximum irradiation angle of the X-ray emission source 4 while ensuring the accuracy of material sorting on the upper material conveying mechanism.

[0036] Preferably, the material conveying direction of the upper material conveying mechanism 2 is opposite to that of the lower material conveying mechanism 3, thereby reducing the horizontal floor area of ​​the box 1 and reducing the distance difference between area A and area B to the X-ray emission source 4, thereby reducing the energy difference between area A and area B of the X-rays.

[0037] The housing 1 is equipped with a baffle plate 13, which is located above the lower material conveying mechanism 3 and is used to baffle and guide the material discharged from the first channel 9. When the material discharged from the upper material conveying mechanism is conveyed and discharged through the first channel 9, it collides with the baffle plate 13. The guide plate guides the material to ensure that it can fall onto the lower material conveying mechanism 3.

[0038] To facilitate material feeding, such as Figure 1 Preferably, the baffle plate 13 gradually tilts downward along the material conveying direction of the lower material conveying mechanism 3.

[0039] like Figure 3 , Figure 7 To avoid material accumulation and prevent damage or breakage when materials collide with the guide slide plate, the guide slide plate 13 includes a bottom support plate 130 and an elastic plate 131 mounted on the bottom support plate 130. The elastic plate 131 can be made of elastic materials such as rubber. The elastic plate 131 has multiple herringbone-shaped protrusions 132, distributed along the width direction of the lower material conveying mechanism 3, forming a guide channel between any two adjacent protrusions 132. This invention achieves two-stage sorting using a single X-ray emission source 4 through staggered upper and lower material conveying mechanisms 2 and 3, and guides the materials through an inclined first channel 9.

[0040] As Figure 3 Preferably, the protrusions 132 are provided in multiple groups, the multiple groups of protrusions 132 are distributed along the Y-axis direction, each group of protrusions 132 includes multiple protrusions 132 distributed along the Z-axis, and the upper ends of the protrusions 132 located below in the Y-axis direction are located between the two protrusions above. Preferably, the thickness of each protrusion 132 gradually increases from top to bottom.

[0041] Preferably, the upper inner side of the first channel 9 is provided with multiple arc-shaped guide grooves, and the multiple arc-shaped guide grooves are distributed along the Z-axis direction. Since the material moves in a parabolic motion in the first channel 9, the arc-shaped guide grooves are arranged on the upper inner side of the first channel 9, and the arc-shaped guide grooves are used to guide the material to avoid accumulation of the material.

[0042] Embodiment two

[0043] As Figure 4 When the sub-material is reselected, the good material on the upper layer material conveying mechanism 2 is discharged through the second channel 10, the sub-material on the lower layer material conveying mechanism 3 is discharged through the third channel 11, and the good material on the lower layer material conveying mechanism 3 is discharged through the fourth channel 12; and the first channel 9 is close to the upper layer material conveying mechanism 2 relative to the second channel 10, the material is rejected by the first rejection part 7 to the first channel 9, and the good material on the upper layer material conveying mechanism 2 moves in a parabolic motion to the second channel 10.

[0044] The material in the first channel 9 collides with the material blocking slide 13 after being discharged and enters the lower layer material conveying mechanism 3, the material on the lower layer material conveying mechanism 3 is irradiated by the X-ray emitted by the X-ray emitting source 4 after passing through the B area, the lower layer X-ray sensor box 6 receives information, and the second rejection part 8 rejects the sub-material moving in a parabolic motion from the lower layer material conveying mechanism 3 according to the information received by the lower layer X-ray sensor box 6.

[0045] Embodiment three

[0046] As Figure 5 The difference between the embodiment and the above-mentioned embodiments is that the embodiment is used for sorting three kinds of materials, the first kind of material is discharged through the second channel 10, the second kind of material is discharged through the third channel 11, and the third kind of material is discharged through the fourth channel 12.

[0047] As Figure 6 Preferably, the X-ray emitting source 4 is close to the lower layer X-ray sensor box 6 relative to the upper layer X-ray sensor box 5 in the Z-axis direction, thereby reducing the distance from the X-ray emitting source 4 to the lower layer X-ray sensor box 6, ensuring that the energy difference of the X-ray irradiation to the X-ray on the A area and the B area is reduced, thereby ensuring the detection effect.

[0048] It should be understood that the orientation or positional relationship indicated by terms such as "central", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like is based on the orientation or positional relationship shown in the drawings, and is merely intended to facilitate the description of the present application and simplify the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0049] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing", and the like should be broadly understood, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height.

[0052] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent replacement or change according to the technical solution and inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A single source, secondary screening, x-ray foreign object detection machine characterized by, The utility model relates to a kind of X-ray sorting machine, including box (1), upper layer material conveying mechanism (2) and lower layer material conveying mechanism (3) located in the upper layer material conveying mechanism (2) below are equipped in the box (1), the upper layer material conveying mechanism (2) and the lower layer material conveying mechanism (3) are with material in X axis direction transmission, the upper layer material conveying mechanism (2) and the lower layer material conveying mechanism (3) are staggered distribution in Z axis direction; X-ray emitting source (4) is equipped on the box (1), the light of the X-ray emitting source (4) has the part of irradiation to upper layer material conveying mechanism (2) A area and irradiation to lower layer material conveying mechanism (3) B area, the lower side of the A area is equipped with upper layer X-ray sensor box (5), the lower side of the B area is equipped with lower layer X-ray sensor box (6); First rejecting element (7) and second rejecting element (8) are equipped on the box (1), the first rejecting element (7) is used to sort material located on the upper layer material conveying mechanism (2) to first channel (9) and second channel (10), the first channel (9) is conveyed to material to the lower layer material conveying mechanism (3); The second rejecting element (8) is used to sort material on the lower layer material conveying mechanism to third channel (11) and fourth channel (12).

2. The single source, secondary screening, x-ray foreign object detection machine of claim 1, wherein, For the recheck of material.

3. The single source, secondary screening, x-ray foreign object detection machine of claim 2, wherein, The X-ray emitting source (4) is away from the lower layer X-ray sensor box (6) in Z axis direction relative to the upper layer X-ray sensor box (5).

4. The single source, secondary screening, x-ray foreign object detection machine of claim 2, wherein, When checking good material, the defective material on the upper layer material conveying mechanism (2) is discharged through second channel (10), the defective material on the lower layer material conveying mechanism (3) is discharged through third channel (11), and the good material on the lower layer material conveying mechanism (3) is discharged through fourth channel (12). When checking defective material, the good material of the upper layer material conveying mechanism (2) is discharged through second channel (10), the defective material on the lower layer material conveying mechanism (3) is discharged through third channel (11), and the good material on the lower layer material conveying mechanism (3) is discharged through fourth channel (12).

5. The single source, secondary screening, x-ray foreign object detection machine of claim 1, wherein, For the sorting of three kinds of materials.

6. The single source, secondary screening, x-ray foreign object detection machine of claim 5, wherein, The X-ray emitting source (4) is close to the middle part of the lower layer X-ray sensor box (6) in Z axis direction relative to the upper layer X-ray sensor box (5).

7. The single source, secondary screening, x-ray foreign object detection machine of claim 5, wherein, The first material is discharged through the second channel (10), the second material is discharged through the third channel (11), and the third material is discharged through the fourth channel (12).

8. The single source, secondary screening x-ray foreign object detection machine of any of claims 1-7, wherein, The transmission material direction of the upper layer material conveying mechanism (2) is opposite to the transmission direction of the lower layer material conveying mechanism (3); The box (1) is equipped with material blocking slide (13), the material blocking slide (13) is located above the lower layer material conveying mechanism (3) and is used to block material discharged from the first channel (9), and the material discharged from the first channel (9) falls on the lower layer material conveying mechanism (3).

9. The single source, secondary screening, x-ray foreign object detection machine of claim 8, wherein, The material blocking slide (13) gradually inclines downward along the material transmission direction of the lower layer material conveying mechanism (3).

10. The single source, secondary screening, x-ray foreign object detection machine of claim 8, wherein, The material blocking slide plate (13) comprises a bottom support plate (130) and an elastic plate (131) installed on the bottom support plate (130), and a plurality of "inverted V-shaped" protrusions (132) are arranged on the elastic plate (131), the plurality of protrusions (132) are distributed along the width direction of the lower layer material conveying mechanism (3), and a flow guide channel is formed between any two adjacent protrusions (132).

Images