Indocalamus leaf image acquisition device

Abstract

The utility model discloses a chequer-shaped indocalamus leaf image acquisition device, which comprises a rack, a conveying mechanism, an image acquisition module and a flattening module, the flattening module comprises a fixed plate, a lower pressing plate, two flattening rollers and two driving motors, the lower pressing plate is connected with the fixed plate through a linear guide rail, the two flattening rollers are connected with the lower pressing plate, and the two driving motors are connected with the lower pressing plate. An image acquisition area is formed between the two flattening rollers, one driving motor drives the lower pressing plate to vertically move along the linear guide rail, and the other driving motor drives the two flattening rollers to reversely and synchronously rotate. The two flattening rollers flatten the curled chequer-shaped indocalamus leaves, image acquisition is carried out on the chequer-shaped indocalamus leaves in the flattening state, and the accuracy of image acquisition is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of image acquisition, specifically to the field of bamboo leaf image acquisition device. Background Technology

[0002] Zongzi (sticky rice dumplings) are a traditional festive food, and reed leaves are an indispensable ingredient. Traditionally, reed leaf processing involves manually sorting the leaves by quality and size, which is labor-intensive and inefficient. With the continuous development of machine vision technology, digital image processing techniques are now being used for reed leaf sorting. However, because harvested reed leaves vary in shape and are often curled, this significantly impacts image acquisition, subsequent image processing, and judgment. Utility Model Content

[0003] Therefore, one objective of this utility model is to provide a bamboo leaf image acquisition device that can flatten the curled bamboo leaves during image acquisition, ensuring that the accuracy of image acquisition is not affected by the curling shape of the bamboo leaves.

[0004] An embodiment of this utility model provides a bamboo leaf image acquisition device, including a frame, a conveying mechanism, and an image acquisition module, and further including a flattening module, the flattening module comprising:

[0005] A fixing plate, which is fixedly connected to the frame;

[0006] A lower pressure plate, which is connected to the fixed plate via a linear guide rail;

[0007] A first flattening roller and a second flattening roller are connected to the lower pressure plate via a lower pressure arm, and an image acquisition area is formed between the first flattening roller and the second flattening roller.

[0008] A first drive motor is fixedly connected to the fixed plate and drives the lower pressure plate to move vertically along the linear guide rail through a first transmission mechanism.

[0009] The second drive motor is fixedly connected to the lower pressure plate and drives the first and second pressing rollers to rotate synchronously in opposite directions through the second transmission mechanism.

[0010] Furthermore, the first transmission mechanism is a synchronous belt transmission mechanism, including a transmission gear, a driven roller and a first drive belt. The transmission gear is sleeved on the output shaft of the first drive motor and is connected to the lower pressure plate through the first drive belt.

[0011] Furthermore, the first drive motor is fixedly connected to the upper end of the fixed plate, the driven roller is rotatably connected to the mounting hole at the lower end of the fixed plate, and the first drive belt surrounds the fixed plate.

[0012] Furthermore, the first drive motor is fixedly connected to the upper end of the fixed plate via an adjusting bracket. The adjusting bracket is provided with a fastening seat and a limiting beam. The fastening seat is vertically provided with an elongated hole, and the limiting beam is coupled to the mounting groove provided at the upper end of the fixed plate.

[0013] Furthermore, the second transmission mechanism is a circular belt transmission mechanism.

[0014] Furthermore, a first photoelectric sensor is provided on the fixed plate; a positioning plate is provided on the lower pressure plate, which cooperates with the first photoelectric sensor to position the lower pressure plate.

[0015] Furthermore, it also includes a supplemental lighting module.

[0016] Furthermore, the conveying mechanism is divided into a first conveying section and a second conveying section. The first conveying section and the second conveying section are separated at the image acquisition area to form a supplementary light channel. The supplementary light module is located below the supplementary light channel.

[0017] Furthermore, a second photoelectric sensor is provided in front of the flattening module.

[0018] Furthermore, the outer rings of the first and second flattening rollers are made of elastic material.

[0019] The beneficial effects of the bamboo leaf image acquisition device of this utility model are as follows: In this embodiment of the utility model, before the bamboo leaf is sent to the image acquisition area by the conveying mechanism, the first drive motor drives the lower pressure plate to move downward along the linear guide rail. The flattening roller set on the lower pressure plate presses the bamboo leaf downward to flatten the curled bamboo leaf. The second drive motor drives the flattening roller to rotate synchronously in the opposite direction to the conveying mechanism. Under the combined action of the flattening roller and the conveying mechanism, the bamboo leaf enters the image acquisition area. The image of the bamboo leaf is acquired in the flattened state, which ensures the accuracy of image acquisition. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the bamboo leaf image acquisition device provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the pressure-down module provided in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the fixing plate and its connecting components provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the lower pressure plate and its connecting components provided in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the pressing module and conveying mechanism provided in an embodiment of this utility model.

[0026] Reference numerals: Frame 1, Conveying mechanism 2, First conveying section 21, Second conveying section 22, Supplemental lighting channel 23, Image acquisition module 3, Flattening module 4, Fixing plate 41, Mounting hole 411, Mounting slot 412, First photoelectric sensor 413, Pad 414, Lower pressure plate 42, Positioning plate 421, Linear guide rail 43, Guide rail body 431, Slider 432, First flattening roller 441, Second flattening roller 442, Lower pressure arm 45, Image acquisition area 46, First drive motor 47, Adjusting bracket 471, Fastening seat 47 11, Limiting beam 4712, elongated hole 4713, first mounting bracket 472, first transmission mechanism 48, transmission gear 481, driven roller 482, first drive belt 483, first straight section 4831, connecting block 484, second drive motor 49, second mounting bracket 491, second transmission mechanism 410, transmission pulley 4100, first wheel groove 4101, second wheel groove 4102, third wheel groove 4103, first circular belt 4104, second circular belt 4105, supplementary lighting module 5, second photoelectric sensor 6. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 As shown, this utility model provides a bamboo leaf image acquisition device, including a frame 1, a conveying mechanism 2, and an image acquisition module 3 disposed above the conveying mechanism 2. The image acquisition module 3 can specifically be a line scan camera. The image acquisition module 3 can be directly installed on the frame 1 via bolts or clips, or indirectly connected to the frame 1 via a bracket. These connection methods are conventional techniques in the field and are therefore not described in detail. Figure 1As shown in the image.

[0029] The embodiments of this utility model also include a flattening module 4 disposed between the conveying mechanism 2 and the image acquisition module 3. The flattening module 4 includes a fixing plate 41, a lower pressure plate 42, and various components disposed thereon. The flattening module 4 will be described in detail below.

[0030] The fixed plate 41 and the lower pressure plate 42 are vertically arranged above the conveying mechanism 2. For example... Figure 2 , 3 As shown, the fixing plate 41 is fixedly connected to the frame 1. In some embodiments, to ensure the installation space of the connecting parts on the fixing plate 41, a pad 414 is added between the fixing plate 41 and the frame 1. Two vertical linear guide rails 43 are provided between the fixing plate 41 and the lower pressure plate 42. The linear guide rail 43 includes a guide rail body 431 and a slider 432. The guide rail body 431 is fixedly connected to the fixing plate 41, and the slider 432 is fixedly connected to the lower pressure plate 42. The lower pressure plate 42 can move vertically relative to the fixing plate 41 along the linear guide rails 43.

[0031] A first drive motor 47 is fixedly mounted on the fixed plate 41, and the first drive motor 47 is connected to the lower pressure plate 42 through the first transmission mechanism 48.

[0032] In some embodiments, the first transmission mechanism 48 may be a belt drive or a screw drive, such as a belt drive or a screw and nut drive.

[0033] Preferably, the first transmission mechanism 48 is a synchronous belt drive mechanism. For example... Figure 2 , 3 As shown, a transmission gear 481 is mounted on the output shaft of the first drive motor 47, and a driven roller 482 is mounted on the fixed plate 41 corresponding to the transmission gear 481. A first drive belt 483 connects the transmission gear 481 and the driven roller 482, transmitting power from the first drive motor 47. The first straight section 4831 of the first drive belt 483 near the lower pressure plate 42 is vertically oriented, and the first drive belt 483 is fixedly connected to the lower pressure plate 42 at the first straight section 4831 via a connecting block 484. The first straight section 4831, the lower pressure plate 42, and the linear guide rail 43 are all vertically oriented, thus ensuring that the first drive motor 47 can normally drive the lower pressure plate 42 to move vertically along the guide rail 43 via the first drive belt 483.

[0034] Preferred, such as Figure 3As shown, the first drive motor 47 is disposed on the upper end face of the fixed plate 41. The fixed plate 41 has a square mounting hole 411 at its lower end, which is larger than the driven roller 482. The driven roller 482 is fixed at the mounting hole 411. The first drive belt 483, which connects the transmission gear 481 and the driven roller 482, surrounds the fixed plate 41. Compared with the structure in which the first drive belt 483, transmission gear 481, and driven roller 482 are all disposed between the fixed plate 41 and the lower pressure plate 42, the structure in which the first drive belt 483 surrounds the fixed plate 41 can effectively reduce the distance between the fixed plate 41 and the lower pressure plate 42 and simplify the fixing structure of the driven roller 482 on the fixed plate 41. The first drive motor 47 is disposed on the upper end face of the fixed plate 41, and the driven roller 482 is disposed at the mounting hole 411 at the lower end of the fixed plate 41. Under the premise of ensuring that the lower pressure plate 42 has the same stroke, the vertical dimension of the entire flattening module 4 can be effectively reduced.

[0035] Furthermore, such as Figure 3 As shown, the first drive motor 47 is fixedly connected to the first mounting bracket 472, which is fixedly connected to the adjusting bracket 471, which in turn is connected to the fixing plate 41. The adjusting bracket 471 is T-shaped, with a square limiting beam 4712 at the top and a fastening seat 4711 perpendicular to the limiting beam 4712 at the bottom. Two elongated holes 4713 are vertically arranged on the fastening seat 4711. A square mounting groove 412 is provided at the corresponding position on the upper end of the fixing plate 41. The width of the mounting groove 412 is approximately the same as the width of the limiting beam 4712. The fixing plate 41 also has four mounting holes below the mounting groove 412. The mounting height of the first drive motor 47 can be adjusted by adjusting the relative position of the elongated holes 4713 and the mounting holes, thereby adjusting the tension of the first drive belt 483. At the same time, the coupling between the limiting beam 4712 and the mounting groove 412 achieves horizontal limiting.

[0036] The flattening module 4 also includes a first flattening roller 441 and a second flattening roller 442 arranged in parallel. The two flattening rollers are connected to the lower pressure plate 42 via two lower pressure arms 45. The connection between the two lower pressure arms 45, the lower pressure plate 42, and the flattening rollers is the same, and the specific structure is as follows: Figure 4 As shown, one end of the lower pressure arm 45 is fixedly connected to the side of the lower pressure plate 42; two identical flattening rollers are rotatably connected to the ends of the two lower pressure arms 45 away from the lower pressure plate 42. The two flattening rollers are arranged parallel to each other at the same horizontal height, with a gap between them, which forms the image acquisition area 46. The image acquisition module 3 is located directly above the image acquisition area 46.

[0037] A second drive motor 49 is fixedly mounted on the lower pressure plate 42 via a second mounting bracket 491. The second drive motor 49 is connected to two flattening rollers via a second transmission mechanism 410, and drives the first flattening roller 441 and the second flattening roller 442 to rotate synchronously in opposite directions. The synchronous rotation of the flattening rollers in opposite directions, as described in this utility model, is defined as follows: the rotation direction A of the flattening rollers is opposite to the conveying direction S of the conveying mechanism 2, such as... Figure 5 As shown, the linear velocity of the flattening roller surface is the same as the conveying speed of the conveying mechanism 2. While the first flattening roller 441 and the second flattening roller 442 flatten the bamboo leaves, they also convey the bamboo leaves backward together with the conveying mechanism 2 through friction.

[0038] In some embodiments, the second transmission mechanism 410 may be a belt drive or a gear drive, such as a circular belt drive or a cylindrical gear drive.

[0039] Preferably, the second transmission mechanism 410 is a belt drive mechanism. For example... Figure 4 As shown, a transmission pulley 4100 is sleeved on the output shaft of the second drive motor 49. A first groove 4101 is provided on the same side of the first flattening roller 441, and a second groove 4102 and a third groove 4103 are provided on the same side of the second flattening roller 442. Figure 2 As shown, the transmission pulley 4100 is connected to the third wheel groove 4103 by the first circular belt 4104, and the first wheel groove 4101 and the second wheel groove 4102 are connected by the second circular belt 4105, so that the driving force of the first drive motor 47 can be transmitted to the first flattening roller 441 and the second flattening roller 442 at the same time.

[0040] Based on the structure of the flattening module 4 described above, the entire bamboo leaf image acquisition device operates as follows: The bamboo leaf is conveyed by the conveying mechanism 2 towards the flattening rollers. At this time, the lower pressure plate 42 and the two flattening rollers fixed on the lower pressure plate 42 are at their highest positions. When the bamboo leaf is conveyed to the front of the first flattening roller 441, the first drive motor 47 starts and drives the lower pressure plate 42 to move vertically downward along the linear guide rail 43 through the first transmission mechanism 48. At the same time, the second drive motor 49 starts and drives the two flattening rollers to rotate synchronously in opposite directions through the second transmission mechanism 410. The two flattening rollers move vertically downward with the lower pressure plate 42. The curled bamboo leaf is flattened by the combined action of the first flattening roller 441 and the conveying mechanism 2, and is then conveyed backward by the first flattening roller 441 and the conveying mechanism 2 into the image acquisition area 46. The leaf image acquisition device begins to acquire images of the bamboo leaves; the bamboo leaves continue to be conveyed backward, entering between the second flattening roller 442 and the conveying mechanism 2. Under the joint flattening action of the two flattening rollers and the conveying mechanism 2, the bamboo leaf section in the image acquisition area 46 is flattened; the two flattening rollers and the conveying mechanism 2 continue to convey the bamboo leaves backward. When the rear section of the bamboo leaf leaves away from the first flattening roller 441, the second flattening roller 442 and the conveying mechanism 2 work together to ensure that the bamboo leaf leaves are still flattened; when the bamboo leaf leaves away from the second flattening roller 442, the first drive motor 47 drives the lower pressure plate 42 to move vertically upward along the linear guide rail 43, and the gap between the two flattening rollers and the conveying mechanism 2 also increases, so that when the next curled bamboo leaf is conveyed to the front of the first flattening roller 441, the above flattening and image acquisition actions are repeated.

[0041] In some embodiments of this invention, the highest and lowest positions of the two flattening rollers during their flattening stroke can be precisely controlled by photoelectric switches. Specifically, a first photoelectric sensor 413 is provided on one side of the fixed plate 41, and a positioning plate 421 is provided at a corresponding position on the lower pressure plate 42. The first photoelectric sensor 413 on the lower pressure plate 42 detects the two position recognition holes 4211 to locate and control the highest and lowest positions of the lower pressure plate 42's movement stroke.

[0042] In some embodiments of this utility model, the second drive motor 49 can be started when the lower pressure plate 42 is pressed down, or it can remain in the started state.

[0043] In some embodiments of this utility model, the feeding frequency of the conveying mechanism 2 is uniform and constant, that is, the interval between the bamboo leaves conveyed by the conveying mechanism 2 is specific and constant. The conveying mechanism 2 conveys the bamboo leaves to the flattening module 4 at a uniform speed. The starting time of the first drive motor 47 driving the lower pressure plate 42 to move downward can be set to a specific and constant value according to the feeding frequency.

[0044] Preferably, a second photoelectric sensor 6 is also provided above the conveying mechanism 2, specifically positioned in front of the first flattening roller 441 in the flattening module 4, and connected to the frame 1 or the conveying mechanism 2 via a bracket or other means. The second photoelectric sensor 6 detects the bamboo leaves conveyed to the front of the flattening module 4 and participates in controlling the starting timing of the first drive motor 47 driving the lower pressure plate 42 to move downward, which can improve the accuracy of control and also cope with uneven or changing feeding frequency of the conveying mechanism 2.

[0045] Preferably, in some embodiments of this utility model, the outer rings of the first flattening roller 441 and the second flattening roller 442 are preferably made of elastic material to avoid damaging the bamboo leaves.

[0046] In some embodiments of this utility model, the conveying mechanism 2 can be a belt conveyor or a drive roller mechanism. In embodiments using a drive roller mechanism, two drive rollers should be correspondingly arranged below the first flattening roller 441 and the second flattening roller 442 to jointly flatten and push the bamboo leaves, as specifically as follows. Figure 5 As shown in the diagram, the dashed line represents the conveyor belt.

[0047] In some embodiments of this utility model, the bamboo leaf image acquisition device further includes a supplementary lighting module 5. The supplementary lighting module 5 illuminates the image acquisition area 46 with auxiliary light, enhancing the uniformity and brightness of the illumination in the image acquisition area 46, thereby improving the accuracy and stability of image acquisition. The supplementary lighting module 5 can be reasonably set according to the actual space and angle in a specific embodiment.

[0048] Preferably, the supplementary lighting module 5 is positioned below the conveying mechanism 2 and is fixedly connected to the frame 1 via a bracket or similar means. In embodiments where the conveying mechanism 2 uses a belt, the conveying mechanism 2 is divided into a first conveying section 21 and a second conveying section 22, and is interrupted at the image acquisition area 46. The gap between the first conveying section 21 and the second conveying section 22 forms a supplementary lighting channel 23, and the supplementary lighting module 5 is positioned below the supplementary lighting channel 23. The auxiliary light from the supplementary lighting module 5 enters the image acquisition area 46 through the supplementary lighting channel 23, such as... Figure 5 As shown. In the embodiment where the conveying mechanism 2 uses a conveyor roller, there is already a gap between the transmission rollers corresponding to the first flattening roller 441 and the second flattening roller 442, which has a supplementary lighting channel 23, and the supplementary lighting module 5 can directly provide supplementary lighting.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0050] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0051] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0052] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A device for collecting images of bamboo leaves, comprising a frame (1), a conveying mechanism (2) and an image collecting module (3), characterized in that, It also includes a flattening module (4), which includes: A fixing plate (41) is fixedly connected to the frame (1); The lower pressure plate (42) is connected to the fixed plate (41) via a linear guide rail (43); The first flattening roller (441) and the second flattening roller (442) are connected to the lower pressure plate (42) through the lower pressure arm (45), and an image acquisition area (46) is formed between the first flattening roller (441) and the second flattening roller (442). The first drive motor (47) is fixedly connected to the fixed plate (41) and drives the lower pressure plate (42) to move vertically through the first transmission mechanism (48); The second drive motor (49) is fixedly connected to the lower pressure plate (42) and drives the first pressing roller (441) and the second pressing roller (442) to rotate synchronously in opposite directions through the second transmission mechanism (410).

2. The device of claim 1, wherein, The first transmission mechanism (48) is a synchronous belt transmission mechanism, including a transmission gear (481), a driven roller (482) and a first drive belt (483). The transmission gear (481) is sleeved on the output shaft of the first drive motor (47) and connected to the lower pressure plate (42) through the first drive belt (483).

3. The device of claim 2, wherein, The first drive motor (47) is fixedly connected to the upper end of the fixed plate (41), the driven roller (482) is rotatably connected to the mounting hole (411) at the lower end of the fixed plate (41), and the first drive belt (483) surrounds the fixed plate (41).

4. The device of claim 3, wherein, The first drive motor (47) is fixedly connected to the upper end of the fixed plate (41) via an adjusting bracket (471). The adjusting bracket (471) is provided with a limiting beam (4712), and the limiting beam (4712) is coupled to the mounting groove (412) provided on the upper end of the fixed plate (41).

5. The device of claim 1, wherein, The second transmission mechanism (410) is a circular belt transmission mechanism.

6. The device of claim 1, wherein, A first photoelectric sensor (413) is provided on the fixed plate (41); a positioning plate (421) is provided on the lower pressure plate, which cooperates with the first photoelectric sensor (413) to position the lower pressure plate (42).

7. The device of claim 1, wherein, It also includes a supplementary lighting module (5).

8. The device of claim 7, wherein, The conveying mechanism is divided into a first conveying section (21) and a second conveying section (22). The first conveying section (21) and the second conveying section (22) are separated at the image acquisition area (46) and form a supplementary light channel (23). The supplementary light module (5) is located below the supplementary light channel (23).

9. The device of claim 1, wherein, A second photoelectric sensor (6) is provided in front of the flattening module (4).

10. The device of claim 1, wherein, The outer rings of the first flattening roller (441) and the second flattening roller (442) are made of elastic material.

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