A package detection device based on an X-ray machine

Abstract

The present invention discloses a package detection device based on an X-ray machine, belonging to the technical field of package detection devices, which includes a housing and a conveyor belt passing through the housing. An X-ray scanning mechanism is installed in the housing, a hot air blower is installed on the top wall of the housing, a air supply mechanism is installed on the top wall of the inner cavity of the housing, and a thermal imager is installed on the side wall of the housing; the air supply mechanism includes an air supply box fixed in the housing, the air supply box is communicated with the hot air blower, the bottom of the air supply box is connected with an air outlet pipe, one end of the air outlet pipe is connected with an annular pipe, and a plurality of nozzles are arranged on the side of the annular pipe facing the conveyor belt; the present invention can effectively detect whether there are contraband items in the package and whether the outer packaging is damaged, the detection effect is accurate, and the operator can quickly obtain the result and process it, which is beneficial to the progress of express sorting.

Description

Technical Field

[0001] The present invention relates to the technical field of package detection devices, and particularly relates to a package detection device based on an X-ray machine. Background Art

[0002] In recent years, thanks to the rapid development of e-commerce, the express delivery industry has witnessed an explosive growth. While the industry is developing rapidly, it has also brought huge pressure on express delivery security inspections. Before express packages are delivered and during the transfer process, it is necessary to pre-detect whether there are contraband items in the packages. Since the authenticity of the waybill information on express packages cannot be reliably guaranteed, for safety reasons, professional security inspectors need to manually observe the X-ray images of each piece of goods beside the X-ray machine to confirm whether the goods are contraband.

[0003] The X-ray machine mainly uses X-ray irradiation to detect the components of the items inside the package. At present, most express deliveries are packaged in hard cardboard boxes. However, during the sorting process of express deliveries, the outer packaging may be damaged due to logistics, weather, and manual operations, with cracks and openings appearing on the packaging. The damaged packaging is likely to cause damage or leakage of the items, and these cracks and openings are not obvious in X-ray imaging. Therefore, it is impossible to effectively detect whether the packaging is damaged. Summary of the Invention

[0004] The purpose of the present invention is to provide a package detection device based on an X-ray machine, and solve the following technical problems: The packaging of the package may be damaged due to logistics, weather, and manual operations, with cracks and openings appearing on the packaging. The damaged packaging is likely to cause damage or leakage of the items, and these cracks and openings are not obvious in X-ray imaging. Therefore, it is impossible to effectively detect whether the packaging is damaged.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A package detection device based on an X-ray machine includes a housing and a conveyor belt passing through the housing. An X-ray scanning mechanism is installed inside the housing, a hot air blower is installed on the top wall of the housing, an air supply mechanism is installed on the top wall of the inner cavity of the housing, and a thermal imager is installed on the side wall of the housing;

[0007] The air supply mechanism includes an air supply box fixed inside the housing. The air supply box is communicated with the hot air blower. The bottom of the air supply box is connected with an air outlet pipe. One end of the air outlet pipe is connected with an annular pipe, and a plurality of nozzles are arranged on the side of the annular pipe facing the conveyor belt;

[0008] A fixed frame is fixed inside the housing. First guide rods are symmetrically installed on the inner walls of the four sides of the fixed frame. A baffle is movably arranged between two first guide rods on the same side. A spring is connected between the baffle and the fixed frame. First magnetic members are arranged on the inner walls of the four sides of the fixed frame, and second magnetic members are arranged on the side wall of the baffle close to the fixed frame.

[0009] It further includes an adjusting assembly for adjusting the position of the baffle.

[0010] As a further solution of the present invention: The adjusting assembly includes multiple second guide rods fixed on the bottom wall of the air supply box. An activity frame is movably connected to the multiple second guide rods together. Multiple shielding plates are fixed on the bottom of the activity frame. L-shaped rods are fixed on both side walls of the activity frame. A stress block is fixed at one end of the L-shaped rod. Multiple partition rods are evenly arranged on the surface of the conveyor belt along the length direction. Chamfers are arranged on the partition rods. Limit blocks are arranged at one ends of the first guide rods and the second guide rods.

[0011] As a further solution of the present invention: Both the first magnetic member and the second magnetic member are magnets, and the magnetic sides of the first magnetic member and the second magnetic member close to each other are opposite.

[0012] As a further solution of the present invention: A limit rod is arranged on the side wall of the baffle close to the fixed frame.

[0013] As a further solution of the present invention: Two ventilation holes are arranged on both side walls of the housing. Heat exchange boxes are fixed on both L-shaped rods. Two communication holes are opened on the heat exchange box. A hose is connected to one side of the communication hole, and the hose is communicated with the ventilation hole.

[0014] As a further solution of the present invention: L-shaped mounting rods are fixed on the inner walls of both side walls of the housing. An I-shaped plate is fixed at one end of the mounting rod, and one side of the I-shaped plate is in contact with the side wall of the heat exchange box.

[0015] As a further solution of the present invention: Two lifting plates are arranged inside the housing. The two lifting plates are respectively located on one side of the two heat exchange boxes. A guide groove is installed on the side wall of the lifting plate. A guide block is movably connected in the guide groove. One end of the guide block is fixed on the inner wall of the housing. Rack teeth are arranged on the side walls of the lifting plate and the heat exchange box close to each other. Rotating shafts are rotatably installed on the inner walls of both sides of the housing. A gear is installed at one end of the rotating shaft, and the gear meshes with the two rack teeth.

[0016] The beneficial effects of the present invention:

[0017] (1) By providing a hot air blower and a air supply mechanism, for packages wrapped in hard paper shells, the hot air blower generates hot air and blows it towards the packages. If the outer packaging of the package is damaged, it can be visually observed in the thermal imager that hot air enters the interior of the package, thereby determining whether the package is damaged. Moreover, a baffle is provided and, in conjunction with an adjustment mechanism, the baffle can move intermittently. When the baffle blocks the nozzle, the air pressure in the air supply box increases. When the package moves below the nozzle and the baffle moves away, the hot air with increased pressure is ejected through the nozzle. For packages with minor damage, the air flow can also enter the interior of the package, improving the accuracy of detection;

[0018] (2) The adjustment mechanism of the present invention consists of structures such as a movable frame, a fixed frame, a shielding plate, a first guide rod, and a second guide rod. As the conveyor belt moves, it can drive the baffle to move automatically. The structure is simple and ingenious, matching the transportation of the packages and improving the detection efficiency;

[0019] (3) By providing mechanisms such as a heat exchange box and a hose, in order to avoid heat accumulation inside the housing during long-term operation, the heat inside the housing can be absorbed and discharged, reducing the impact of high temperature on the packages. Moreover, the heat energy is recycled, reducing waste, and being energy-saving and environmentally friendly. Description of the Drawings

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the overall structural schematic diagram of the first embodiment of the present invention;

[0022] Figure 2 is the internal structural schematic diagram of the housing of the first embodiment of the present invention;

[0023] Figure 3 is the structural schematic diagram of the air supply mechanism of the first embodiment of the present invention;

[0024] Figure 4 is the structural schematic diagram of the air supply box, movable frame, and fixed frame in the disassembled state of the first embodiment of the present invention;

[0025] Figure 5 is the structural schematic diagram of the fixed frame of the first embodiment of the present invention;

[0026] Figure 6 is the overall structural schematic diagram of the second embodiment of the present invention;

[0027] Figure 7 is the cross-sectional view of the second embodiment of the present invention;

[0028] Figure 8 is the first perspective structural schematic diagram of the lifting plate and the heat exchange box of the second embodiment of the present invention;

[0029] Figure 9It is a schematic structural diagram of the second perspective of the lifting plate and the heat exchange box in the second embodiment of the present invention.

[0030] In the figure: 1, housing; 2, conveyor belt; 3, X-ray scanning mechanism; 4, thermal imager; 5, hot air blower; 6, air supply mechanism; 601, air supply box; 602, air outlet pipe; 603, annular pipe; 604, nozzle; 605, second guide rod; 606, movable frame; 607, L-shaped rod; 608, force receiving block; 609, shielding plate; 610, fixed frame; 611, first guide rod; 612, baffle; 613, spring; 614, second magnetic part; 615, first magnetic part; 616, limiting rod; 7, partition rod; 8, ventilation hole; 9, heat exchange box; 10, hose; 11, mounting rod; 12, I-shaped plate; 13, lifting plate; 14, guide groove; 15, guide block; 16, rack; 17, rotating shaft; 18, gear; 19, communication hole.

[0031] The attached drawings are only for illustrative purposes and should not be construed as limiting the present invention; in order to better illustrate this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the size and shape of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1 to 5As shown in the figure, the present invention is a package detection device based on an X-ray machine, which includes a housing 1 and a conveyor belt 2 passing through the housing 1. An X-ray scanning mechanism 3 is installed in the housing 1, a hot air blower 5 is installed on the top wall of the housing 1, an air supply mechanism 6 is installed on the top wall of the inner cavity of the housing 1, and a thermal imager 4 is installed on the side wall of the housing 1; The air supply mechanism 6 includes an air supply box 601 fixed in the housing 1. The air supply box 601 is communicated with the hot air blower 5. The bottom of the air supply box 601 is connected with an air outlet pipe 602. One end of the air outlet pipe 602 is connected with an annular pipe 603. A plurality of nozzles 604 are arranged on the side of the annular pipe 603 facing the conveyor belt 2; A fixed frame 610 is fixed in the housing 1. First guide rods 611 are symmetrically installed on the inner walls of the four sides of the fixed frame 610. A baffle 612 is movably arranged between two first guide rods 611 on the same side. A spring 613 is connected between the baffle 612 and the fixed frame 610. First magnetic members 615 are arranged on the inner walls of the four sides of the fixed frame 610. Second magnetic members 614 are arranged on the side wall of the baffle 612 close to the fixed frame 610; It also includes an adjustment component for adjusting the position of the baffle 612; When the hot air blower 5 is started, in the initial state, the baffle 612 blocks the nozzles 604, and the hot air cannot be discharged. The air pressure in the air supply box 601 gradually increases. The package to be detected is sent into the housing 1 through the conveyor belt 2. First, the X-ray scanning mechanism 3 is used to scan the package to judge whether there are contraband items in the package. When the package moves below the annular pipe 603, the adjustment component drives the baffle 612 to move away and no longer block the nozzles 604. The high-pressure hot air blows towards the package. If the outer packaging of the package is damaged, it can be directly observed in the thermal imager 4 that the hot air enters the inside of the package, so as to judge whether the package is damaged. When the package detection is completed, the baffle 612 blocks the nozzles 604 again and waits for the next package detection; It should be noted that the X-ray scanning mechanism 3 is a prior art, and its specific structure will not be described in detail.

[0034] Refer to Figures 3 to 5, the adjustment assembly includes multiple second guide rods 605 fixed to the bottom wall of the air supply box 601. A movable frame 606 is movably connected to the multiple second guide rods 605 together. Multiple shielding plates 609 are fixed to the bottom of the movable frame 606. L-shaped rods 607 are fixed to both side walls of the movable frame 606. A force-receiving block 608 is fixed to one end of the L-shaped rod 607. Multiple partition rods 7 are evenly arranged on the surface of the conveyor belt 2 along the length direction. Chamfers are provided on the partition rods 7. Limit blocks are provided at one ends of the first guide rod 611 and the second guide rod 605. Both the first magnetic member 615 and the second magnetic member 614 are magnets, and the magnetic poles of the sides of the first magnetic member 615 and the second magnetic member 614 close to each other are opposite. In the initial state, the multiple shielding plates 609 are respectively located between the first magnetic member 615 and the second magnetic member 614 around. The shielding plates 609 are made of aluminum or wood to isolate the interaction between the first magnetic member 615 and the second magnetic member 614. Under the action of the spring 613, the baffle 612 blocks the nozzle 604. The arrangement of the multiple partition rods 7 can make the packages evenly distributed, and the partition rods 7 move together with the conveyor belt 2. When the partition rod 7 touches the force-receiving block 608, the force-receiving block 608 is lifted, so that the L-shaped rod 607 and the movable frame 606 are lifted, and the shielding plate 609 is synchronously lifted away from the first magnetic member 615 and the second magnetic member 614. Under the interaction of the first magnetic member 615 and the second magnetic member 614, the baffle 612 moves away from the nozzle 604, and the spring 613 is compressed. The hot air is ejected through the nozzle 604. When the partition rod 7 separates from the force-receiving block 608, the movable frame 606 and the shielding plate 609 descend to isolate the interaction between the first magnetic member 615 and the second magnetic member 614. Under the action of the spring 613, the baffle 612 automatically resets to block and seal the nozzle 604.

[0035] Refer to Figure 5 , a limit rod 616 is provided on the side wall of the baffle 612 close to the fixed frame 610. In order to prevent the first magnetic member 615 and the second magnetic member 614 from being completely adsorbed together, the limit rod 616 is provided to limit the stroke of the baffle 612 and the second magnetic member 614, so that there is still a certain gap between the first magnetic member 615 and the second magnetic member 614 after they approach each other to accommodate the insertion of the shielding plate 609.

[0036] Embodiment 2: On the basis of Embodiment 1, in order to prevent the situation that too much heat accumulates inside the housing 1 during long-term operation, in this embodiment, refer to Figures 6 to 9As shown in the figure, two ventilation holes 8 are provided on both side walls of the housing 1, and a heat exchange box 9 is fixed on each of the two L-shaped rods 607. Two communication holes 19 are formed in the heat exchange box 9. One side of the communication hole 19 is connected to a hose 10, and the hose 10 is communicated with the ventilation hole 8. The heat exchange box 9 is arranged to communicate with the outside through the hose 10, so that hot air can be discharged to the outside through the hose 10, and an aqueous solution can be added into the heat exchange box 9 to absorb heat, reducing heat waste. The heat exchange box 9 is connected to an external water source through a pipeline, and the aqueous solution inside the heat exchange box 9 is replaced regularly to ensure the heat absorption effect.

[0037] Refer to Figure 7 , Figure 8 and Figure 9 , L-shaped mounting rods 11 are fixed on the inner walls of both side walls of the housing 1. One end of the mounting rod 11 is fixed with an I-shaped plate 12, and one side of the I-shaped plate 12 is in contact with the side wall of the heat exchange box 9. By arranging the I-shaped plate 12, when blowing air, the heat exchange box 9 rises together with the L-shaped rod 607, and the I-shaped plate 12 blocks the communication hole 19, so that hot air will not be discharged to the outside of the housing 1 during blowing, reducing interference with the detection and ensuring the detection effect. After the blowing is completed, the heat exchange box 9 descends. At this time, the hose 10 is communicated with the outside to discharge the hot air, and the weight of the heat exchange box 9 can accelerate the descending speed of the L-shaped rod 607, enabling the baffle 612 to reset quickly, which is beneficial to the pressurization in the air supply box 601.

[0038] Refer to Figure 7 , Figure 8 and Figure 9 , two lifting plates 13 are arranged in the housing 1. The two lifting plates 13 are respectively located on one side of the two heat exchange boxes 9. A guide groove 14 is installed on the side wall of the lifting plate 13. A guide block 15 is movably connected in the guide groove 14, and one end of the guide block 15 is fixed on the inner wall of the housing 1. Rack teeth 16 are provided on the side walls of the lifting plate 13 and the heat exchange box 9 that are close to each other. Rotating shafts 17 are rotatably installed on the inner walls of both sides of the housing 1. A gear 18 is installed at one end of the rotating shaft 17, and the gear 18 meshes with the two rack teeth 16. In order to prevent light packages from being blown and falling off the conveyor belt 2, the two lifting plates 13 will descend during blowing to block the packages and prevent them from falling.

[0039] Working principle of the present invention: For the current hard paper shell express packaging, when testing, first start the hot air blower 5. In the initial state, multiple shielding plates 609 are respectively located between the first magnetic member 615 and the second magnetic member 614 on the four sides to isolate the interaction between the first magnetic member 615 and the second magnetic member 614. Under the action of the spring 613, the baffle 612 blocks the nozzle 604, and the hot air cannot be discharged. The air pressure in the air supply box 601 gradually increases. The package to be tested is placed between the two partition rods 7 and sent into the shell 1 through the conveyor belt 2. The package is first scanned by the X-ray scanning mechanism 3 to determine whether the package is Whether there are contraband, when the package gradually moves toward the bottom of the annular tube 603, when the partition rod 7 contacts the force block 608, the force block 608 is lifted up, so that the L-shaped rod 607 and the movable frame 606 are lifted up, and the shielding plate 609 is simultaneously lifted up and separated from the first magnetic member 615 and the second magnetic member 614. Under the interaction of the first magnetic member 615 and the second magnetic member 614, the baffle 612 is away from the nozzle 604, the spring 613 is compressed, and hot air is ejected through the nozzle 604. If the outer packaging of the package is damaged, the hot air can be visually observed in the thermal imager 4 to enter the interior of the package, thereby judging whether the package is damaged;

[0040] When the partition rod 7 gradually separates from the force block 608, the movable frame 606 and the shielding plate 609 descend to isolate the interaction between the first magnetic member 615 and the second magnetic member 614. Under the action of the spring 613, the baffle 612 automatically returns to block and close the nozzle 604, waiting for the next package detection.

[0041] While blowing, the heat exchange box 9 rises together with the L-shaped rod 607, and the I-shaped plate 12 blocks the connecting hole 19. In the case of blowing, the hot air will not be discharged to the outside of the shell 1, reducing interference with the detection. After the blowing is completed, the heat exchange box 9 drops, and the hose 10 is connected to the outside to discharge the hot air. In addition, the weight of the heat exchange box 9 can accelerate the descending speed of the L-shaped rod 607, so that the baffle 612 can be quickly reset, which is beneficial to the pressurization in the air supply box 601. When the heat exchange box 9 rises with the L-shaped rod 607, under the action of the rack 16 and the gear 18, the two lifting plates 13 drop to prevent the small and light packages from being blown off;

[0042] The package that has been inspected is moved out of the housing 1 along the conveyor belt 2, and the operator can process the package accordingly according to the inspection result.

[0043] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A package inspection device based on an X-ray machine, comprising a housing (1) and a conveyor belt (2) passing through the housing (1), wherein an X-ray scanning mechanism (3) is installed in the housing (1), characterized in that: A hot air blower (5) is mounted on the top wall of the shell (1), an air supply mechanism (6) is mounted on the top wall of the inner cavity of the shell (1), and a thermal imager (4) is mounted on the side wall of the shell (1); The air supply mechanism (6) comprises an air supply box (601) fixed in the housing (1), the air supply box (601) being connected to the hot air blower (5), an air outlet pipe (602) being connected to the bottom of the air supply box (601), an annular pipe (603) being connected to one end of the air outlet pipe (602), and a plurality of nozzles (604) being arranged on a side of the annular pipe (603) facing the conveyor belt (2); A fixing frame (610) is fixed inside the shell (1); first guide rods (611) are symmetrically mounted on the four inner walls of the fixing frame (610); a baffle (612) is movably arranged between two first guide rods (611) located on the same side; a spring (613) is connected between the baffle (612) and the fixing frame (610); first magnetic members (615) are arranged on the four inner walls of the fixing frame (610); and a second magnetic member (614) is arranged on the side wall of the baffle (612) close to the fixing frame (610); Also included is an adjustment assembly for adjusting the position of the baffle (612); The adjustment component comprises a plurality of second guide rods (605) fixed on the bottom wall of the air supply box (601), the plurality of second guide rods (605) being movably connected to a movable frame (606), a plurality of shielding plates (609) being fixed to the bottom of the movable frame (606), L-shaped rods (607) being fixed to both side walls of the movable frame (606), a force block (608) being fixed to one end of the L-shaped rod (607), a plurality of partition rods (7) being evenly arranged on the surface of the conveyor belt (2) along the length direction, the partition rods (7) being chamfered, and a limit block being arranged at one end of each of the first guide rod (611) and the second guide rod (605); the partition rod (7) moves together with the conveyor belt (2), and when the partition rod (7) contacts the force block (608), the force block (608) is lifted up; Two ventilation holes (8) are provided on both side walls of the shell (1); a heat exchange box (9) is fixed on each of the two L-shaped rods (607); two connecting holes (19) are provided on the heat exchange box (9); a hose (10) is connected to one side of the connecting hole (19), and the hose (10) is in communication with the ventilation hole (8); L-shaped mounting rods (11) are fixed to the inner walls of both side walls of the shell (1); an I-shaped plate (12) is fixed to one end of the mounting rod (11), and one side of the I-shaped plate (12) is in contact with the side wall of the heat exchange box (9).

2. The X-ray machine-based package detection device according to claim 1, characterized in that: The first magnetic member (615) and the second magnetic member (614) are both magnets, and the magnetism of the sides of the first magnetic member (615) and the second magnetic member (614) that are close to each other are opposite.

3. The X-ray machine-based package detection device according to claim 2, characterized in that: A limiting rod (616) is provided on a side wall of the baffle (612) close to the fixing frame (610).

4. The X-ray machine-based package detection device according to claim 1, characterized in that: Two lifting plates (13) are arranged in the shell (1), and the two lifting plates (13) are respectively located on one side of two heat exchange boxes (9). A guide groove (14) is installed on the side wall of the lifting plate (13), and a guide block (15) is movably connected in the guide groove (14). One end of the guide block (15) is fixed to the inner wall of the shell (1). Racks (16) are arranged on the side walls of the lifting plate (13) and the heat exchange box (9) that are close to each other. Rotating shafts (17) are rotatably installed on the inner walls of both sides of the shell (1), and a gear (18) is installed on one end of the rotating shaft (17), and the gear (18) is meshed with the two racks (16).

Images