An auxiliary lifting device for food inspection

Abstract

The utility model relates to an auxiliary lifting device for food detection is set up in the food detection storehouse, and the detection storehouse still is provided with detection camera, X -ray light source and with detection storehouse front and rear material and discharge conveyer butt joint transmission device, camera and X -ray light source are located transmission device's top, and the auxiliary lifting device is set up transmission device's below, including lifting cylinder, rotary motor and lifting disc that connect from below to top in proper order, wherein the output end of lifting cylinder faces transmission device, the output end of lifting cylinder is provided with rotary motor, the output end of rotary motor is located the side away from lifting cylinder, and the output end of rotary motor is driven connection lifting disc. Compared with prior art, the utility model can realize the stable rotation detection for durian and other large oval fruits, and guarantees the imaging quality and detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, and in particular to an auxiliary lifting device for food testing. Background Technology

[0002] Before large fruits like durian can be sold, their appearance and ripeness must be inspected to determine if they are infested with insects, have ripeness issues, are of good quality, or are moldy. Finally, fruits that pass the appearance and quality tests are placed on the shelves and sold according to their quality grade.

[0003] For example, the durian internal quality inspection system disclosed in Chinese patent CN202311681758.1 places the durian on a rotating platform, which is driven by a conveyor belt through an X-ray detection device for non-destructive testing of the durian's internal quality. However, for large, irregularly shaped, oval fruits like durians, it is difficult to maintain balance on a moving rotating platform, and they are prone to rolling. Furthermore, the large differences in size and shape between different durians result in unstable X-ray images obtained by this method, which is not conducive to subsequent image-based fruit quality testing and grading. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide an auxiliary lifting device for food testing.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An auxiliary lifting device for food testing is provided. The auxiliary lifting device is installed inside a food testing chamber. The testing chamber is equipped with a testing camera, an X-ray source, and a transmission device that connects to the front and rear feed and discharge conveyors of the testing chamber. The camera and X-ray source are located above the transmission device, and the auxiliary lifting device is located below the transmission device. The auxiliary lifting device includes a lifting cylinder, a rotary motor, and a lifting plate connected in sequence from bottom to top.

[0007] The lifting cylinder is arranged vertically, with its output end facing the transmission device, and the rotary motor is installed at the output end of the lifting cylinder.

[0008] The output end of the rotary motor is located on the side away from the lifting cylinder, and the output end of the rotary motor drives the lifting plate.

[0009] As a preferred technical solution, the transmission device includes: a roller fixing plate, a roller, a synchronous motor, a power transmission shaft, and a synchronous belt;

[0010] The roller fixing plate has two rows of rollers arranged along the food conveying direction of the detection chamber. One or more synchronous motors are installed inside the roller fixing plate. The output end of the synchronous motor is provided with a power transmission shaft. The power transmission shaft is connected to the roller drive through a synchronous belt. There is a gap between two adjacent rollers.

[0011] As a preferred technical solution, the lifting plate is arranged between two rows of rollers, and the upper surface of the lifting plate is concave with higher edges and lower center.

[0012] As a preferred technical solution, the upper surface of the lifting plate is coated with an anti-slip coating or has a raised anti-slip structure.

[0013] As a preferred technical solution, when the lifting cylinder is in the retracted state, the entire lifting plate is located below the upper surface of the transmission device.

[0014] As a preferred technical solution, the lifting cylinder is in the extended state, and the lifting plate extends above the upper surface of the transmission device.

[0015] As a preferred technical solution, a reset optocoupler is installed on the side of the rotary motor, and the reset optocoupler is connected to the lifting cylinder signal.

[0016] As a preferred technical solution, the reset optocoupler includes a light-emitting diode and a photodetector; a baffle extending from the rotary motor is respectively provided on both opposite sides of the rotary motor; the light-emitting diode and the photodetector are arranged opposite to each other on both sides of the baffle.

[0017] As a preferred technical solution, an impurity guide plate is provided below the transmission device.

[0018] As a preferred technical solution, the horizontal height of one end of the impurity guide plate is higher than the horizontal height of the other end, and the tilt angle is 15°-30°.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) This utility model provides an auxiliary lifting device for food inspection, which can first lift the target to the height position corresponding to the X-ray source for stable X-ray inspection and imaging; then, the lifting disk is rotated by the DD rotary motor, and the camera performs appearance inspection. It can achieve stable rotational inspection of large oval fruits such as durian, ensuring imaging quality and detection accuracy.

[0021] 2) The lifting plate in this invention adopts a circular design with a higher outer edge and a lower inner edge, which allows the durian to automatically return to its center, ensuring its positional accuracy and preventing it from rolling during the rotation detection process. Furthermore, the lifting plate also features a hollow design, which effectively avoids unnecessary shadows on the X-ray source and camera. Attached Figure Description

[0022] Figure 1 A schematic diagram of a large-scale fruit X-ray detection system;

[0023] Figure 2 This is a schematic diagram of the auxiliary lifting device for food testing according to this utility model;

[0024] The following are the labels in the diagram: 1. Durian, 2. Lifting plate, 3. Roller fixing plate, 4. Roller, 5. Synchronous belt, 6. Synchronous motor, 7. Impurity guide plate, 8. Lifting cylinder, 9. Detection frame, 10. Power transmission shaft, 11. Reset optocoupler, 12. Rotary motor. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] Example 1

[0029] This invention provides an auxiliary lifting device for food inspection, which is applied to applications such as... Figure 1 The image shows an X-ray detection system for large fruits such as durian. The detection chamber contains a camera and an X-ray source. A conveyor system, flush with the front and rear feed and discharge conveyors, is mounted on the detection frame 9 of the chamber. The camera and X-ray source are located above the conveyor system. Below the conveyor system are a lifting and rotating structure and an impurity guide plate 7. Figure 2 As shown, the auxiliary lifting device is located below the transmission device and specifically includes: a lifting plate 2, a lifting cylinder 8, a reset optocoupler 11, and a rotary motor 12.

[0030] The conveying device specifically includes: rollers 4, roller fixing plate 3, and synchronous motors 6 for driving the rollers 4. The upper surface of the roller fixing plate 3 is flush with the front and rear feed and discharge conveyor belts, and two rows of rollers 4 are arranged on the roller fixing plate 3 along the fruit conveying direction. The roller fixing plate 3 has a slot between the two rows of rollers 4 for accommodating the lifting tray 2. One or more synchronous motors 6 are arranged inside the roller fixing plate 3. The output end of the synchronous motor 6 is provided with a power transmission shaft 10. The power transmission shaft 10 is connected to the rollers 4 through a synchronous belt 5. The output of the synchronous motor 6 drives the rollers 4 to reciprocate through the power transmission shaft 10 and the synchronous belt 5.

[0031] The lifting and rotating structure specifically includes a lifting cylinder 8, a rotary motor 12, and a lifting plate 2. Specifically, the bottom of the lifting cylinder 8 is fixedly connected to the detection frame 9 via bolts. Its output end is connected to the lifting plate 2 via the rotary motor 12. The rotary motor is a servo motor with a rated power of 200W and a rated speed of 3000rpm. A reducer reduces the output speed to 60rpm to ensure the stability of the food during rotation. The output shaft of the rotary motor is connected to the center of the lifting plate via a key to ensure that slippage does not occur during rotation.

[0032] The lifting plate 2 is positioned between the two rows of rollers 4. The upper surface of the lifting plate 2 is concave, with the edge higher than the center. In this embodiment, the edge is 20mm higher than the center, and the concave angle is 5°. This design prevents food from slipping due to centrifugal force during rotation. The concave contact surface of the lifting plate 2 is coated with an anti-slip coating with a surface roughness Ra of 3.2μm; alternatively, a raised anti-slip structure can be provided on the upper surface of the lifting plate 2 to increase friction with the food and further prevent the food from slipping during rotation.

[0033] As another implementation of this utility model, the support plate 2 is further hollowed out in one direction, with the hollowed-out area accounting for 60% of the plate area. The hollowed-out part adopts a grid structure with a grid spacing of 10mm. When installing the support plate 2, the hollowed-out direction is arranged along the X-ray source emission direction to ensure sufficient strength to support the food, while minimizing the absorption of X-rays and improving detection accuracy.

[0034] Initially, the lifting plate 2 is located below the roller 4. When testing is required, the lifting cylinder 8 rises, and after the lifting plate 2 is raised to the predetermined position, the rotary motor 12 starts working, causing the durian on the lifting plate 2 to rotate, thus realizing the rotation detection of the durian. The rotary motor 12 is also equipped with a reset optocoupler 11 for detecting its rotation angle, and the reset optocoupler 11 is signal-connected to the lifting cylinder 8. In this embodiment, the reset optocoupler 11 is installed on the side of the rotary motor and consists of a light-emitting diode and a photodetector. A baffle extending from the rotary motor is provided on each of the opposite sides of the rotary motor 12, and the light-emitting diode and the photodetector are arranged opposite each other on the sides of the baffle. In the initial state, the baffle will block the light, so that the reset optocoupler 11 is in the off state. When the rotary motor 12 receives a working command and starts to rotate, the baffle will no longer block the photodetector, and the light emitted by the light-emitting diode will be received, and the reset optocoupler 11 will be triggered. When the rotary motor 12 rotates to 180 degrees, the baffle on the other side of the rotary motor 12 will block the light beam again, the photoelectric receiver will not be able to receive the light signal, the reset optocoupler 11 will be in the off state again, at this time the lifting plate 2 has completed the rotation detection, the rotary motor 12 stops rotating, and the lifting cylinder 8 retracts and descends back to the initial position.

[0035] Below the roller fixing plate 3, an inclined impurity guide plate 7 is also provided. A certain gap is left between two adjacent rollers 4. The impurity guide plate 7 is set along the direction of the rollers 4, and the horizontal height of one end is higher than that of the other end. The impurity guide plate is made of stainless steel with a thickness of 1.5mm and an inclination angle of 15°-30°. It is used to collect food debris or impurities falling from the gap between the rollers and guide them to a collection container outside the detection chamber to prevent impurities from affecting fruit detection.

[0036] The specific working principle of the auxiliary lifting device described above is as follows:

[0037] Durians enter the durian X-ray inspection chamber via the feeding conveyor belt. At this time, the lifting plate 2 is located below the upper surface of the roller fixing plate 3. The synchronous motor 6 rotates, driving the synchronous belt 5 via the power transmission shaft 10, which in turn drives the roller 4 to transport the durian 1 above the lifting plate 2. The external camera inside the X-ray inspection chamber checks whether the durian is centered on the lifting plate 2. If it is not centered, the synchronous motor 6 rotates back and forth, moving the roller 4 to the center of the lifting plate 2. Then, the durian undergoes rotational inspection. The lifting cylinder 8 lifts the durian to a designated height, and the inspection chamber begins X-ray imaging. Simultaneously, the DD rotary motor 12 starts rotating. When the DD rotary motor 12 reaches 180 degrees, the reset optocoupler 11 detects the reset state. At this point, the X-ray inspection chamber stops, and the lifting cylinder 8 returns to its initial position. The synchronous motor 6 then starts working, driving the roller 4 to output the durian to the discharge line. Subsequent durian inspections are performed in this manner.

[0038] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An auxiliary lifting device for food inspection, wherein the auxiliary lifting device is disposed within a food inspection chamber, the inspection chamber being equipped with an inspection camera, an X-ray source, and a transmission device that interfaces with the front and rear feed and discharge conveyor belts of the inspection chamber, the camera and X-ray source being disposed above the transmission device, characterized in that, The auxiliary lifting device is located below the transmission device and includes a lifting cylinder (8), a rotary motor (12), and a lifting plate (2) connected in sequence from bottom to top; The lifting cylinder (8) is arranged in a vertical direction, the output end of the lifting cylinder (8) faces the transmission device, and the rotary motor (12) is installed at the output end of the lifting cylinder (8). The output end of the rotary motor (12) is located on the side away from the lifting cylinder (8), and the output end of the rotary motor (12) drives the lifting plate (2).

2. The auxiliary lifting device for food inspection according to claim 1, characterized in that, The transmission device includes: a roller fixing plate (3), a roller (4), a synchronous motor (6), a power transmission shaft (10), and a synchronous belt (5); Two rows of rollers (4) are arranged on the roller fixing plate (3) along the food conveying direction of the detection chamber. One or more synchronous motors (6) are arranged inside the roller fixing plate (3). The output end of the synchronous motor (6) is provided with a power transmission shaft (10). The power transmission shaft (10) is connected to the roller (4) through a synchronous belt (5). There is a gap between two adjacent rollers (4).

3. The auxiliary lifting device for food inspection according to claim 2, characterized in that, The lifting plate (2) is arranged between two rows of rollers (4), and the upper surface of the lifting plate (2) is concave with high edges and low center.

4. The auxiliary lifting device for food inspection according to claim 3, characterized in that, The upper surface of the lifting plate (2) is coated with an anti-slip coating or has a raised anti-slip structure.

5. The auxiliary lifting device for food inspection according to claim 3, characterized in that, When the lifting cylinder (8) is in the retracted state, the lifting plate (2) is located below the upper surface of the transmission device.

6. The auxiliary lifting device for food inspection according to claim 3, characterized in that, When the lifting cylinder (8) is in the extended state, the lifting plate (2) extends above the upper surface of the transmission device.

7. The auxiliary lifting device for food inspection according to claim 1, characterized in that, A reset optocoupler (11) is installed on the side of the rotary motor (12), and the reset optocoupler (11) is signal-connected to the lifting cylinder (8).

8. The auxiliary lifting device for food inspection according to claim 7, characterized in that, The reset optocoupler (11) includes a light-emitting diode and a photodetector; a baffle extending from the rotating motor is provided on each of the opposite sides of the rotating motor (12); the light-emitting diode and the photodetector are arranged opposite each other on the sides of the baffle.

9. The auxiliary lifting device for food inspection according to claim 1, characterized in that, An impurity guide plate (7) is provided below the transmission device.

10. An auxiliary lifting device for food inspection according to claim 9, characterized in that, The horizontal height of one end of the impurity guide plate (7) is higher than that of the other end, and the tilt angle is 15°-30°.

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