A device for screening of no-fleece tree seed strips

Abstract

The utility model discloses a kind of no floss poplar seedling strip screening devices, belong to poplar seedling strip processing equipment technical field, including the screening gap mouth of conveying assembly can first carry out thick-thin classification to seedling strip, then cooperate the camera of visual detection component to detect whether the seedling strip bud body integrity and incision split, realize the automation combination of thick-thin screening and quality screening, the V-shaped hopper bottom of material receiving groove and ball bearing design can reduce seedling strip friction and ensure it in shooting range, combined with cylinder control material receiving groove deviation realizes automatic discharge, reduces the process of artificial secondary inspection rejection and the problem that mechanical cutting is low in efficiency, prone to error, improves the continuity and reliability of seedling strip screening.

Description

Technical Field

[0001] This utility model relates to the technical field of poplar seed processing equipment, and more specifically, it relates to a screening device for non-fluffy poplar seed cuttings. Background Technology

[0002] Poplar cuttings are an important material for propagating poplar trees. Usually, healthy, disease-free, and well-lignified one-year-old seedlings are selected as cuttings. Cutting poplar cuttings is an indispensable part of the industrialization project of poplar cuttings.

[0003] The current methods for cutting seedlings of poplar trees without fluff mainly revolve around the balance between efficiency and seedling quality. Based on the scale of seedling cultivation (small farmers / large bases), cost budget, and automation requirements, they are divided into two main types: traditional manual cutting and mechanized cutting. Mechanical cutting can significantly improve work efficiency, but when cutting cuttings that are bent, forked, or uneven in thickness, it may accidentally cut the bud or create a split cut (the epidermis is easily infected by bacteria). In this case, a second manual inspection is required to remove "no-bud cuttings" and "split cuttings" to prevent unqualified products from entering the cutting process, which would lead to a decrease in the overall survival rate. However, the second inspection and removal process relies on manual labor, which weakens the efficiency advantage of mechanized operation. Furthermore, the differences in raw materials for poplar cuttings are universal: different varieties (such as Nanlin 3804 and Jianghuai No. 1) have different ranges of cutting thickness and branching characteristics. For the same variety, the curvature of cuttings varies at different ages and different growth parts (root, middle, and tip). The positioning and cutting parameters of existing mechanized cutting equipment are mostly fixed and cannot be adaptively adjusted according to the actual differences in the raw materials of the cuttings. Some related devices can sort the cuttings to a certain extent by their thickness. However, the differences in the curvature of the cuttings and the integrity of the buds cannot be completely solved by simply relying on such sorting devices. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following technical solution: A poplar seed stalk screening device includes a conveying assembly, wherein the conveying assembly is provided with a plurality of screening gaps for screening seed stalks of different thicknesses, and a visual detection component for detecting seed stalk buds is placed at the bottom of each of the plurality of screening gaps. The visual inspection component includes several receiving slots for receiving seed strips after screening through the screening gap. Each of the receiving slots has a camera mounted on one side of its top, and the camera is connected to an image processing system. A support frame is provided at the bottom of the receiving trough. The top middle part of the support frame and the bottom middle part of the receiving trough are connected by hinge A. A cylinder is provided at one end of the support frame. The output end of the cylinder and the bottom side of the receiving trough are connected by hinge B. Both ends of the receiving trough have discharge ports for discharging material. A receiving box is placed at the bottom of each discharge port. The tilt angle of the receiving trough is controlled by the up-and-down extension and retraction of the cylinder and the cooperation of hinge A. When the image processing system determines that the seed strip is qualified, it will control the cylinder to extend, so that the receiving trough tilts to the left and the seed strip falls from the left discharge port into the qualified receiving box. If it is determined to be unqualified, the cylinder will shorten, the receiving trough tilts to the right, and the seed strip is discharged from the right discharge port.

[0005] Furthermore, the bottom of the receiving trough is provided with a V-shaped hopper bottom to keep the received seed strips always within the camera's field of view, and the V-shaped hopper bottom is provided with a number of ball bearings to reduce friction between the seed strips and the V-shaped hopper bottom.

[0006] Furthermore, both ends of the receiving trough are equipped with receiving boxes for collecting the screened seed strips.

[0007] Furthermore, the conveying assembly includes a conveyor frame, a plurality of rollers are installed in the middle of the conveyor frame, a conveyor belt for conveying seed strips is laid between every two sets of rollers, and bolt groups for fixing are provided at both ends of the plurality of rollers, and a feed hopper is provided at the top of one end of the conveyor frame.

[0008] Furthermore, each of the rollers is provided with a pulley at one end, and the pulleys are connected to the belt. A double-groove pulley is provided on one side of the conveyor frame, and one end of the belt is fitted inside the double-groove pulley. The double-groove pulley is connected to the motor through belt B to realize belt drive of the conveyor assembly.

[0009] Furthermore, the feed hopper includes a fixed frame, and the fixed frame has a cavity for feeding. A guide groove is provided at the bottom of the cavity so that the seed strips are aligned with the direction of the screening gap during discharge.

[0010] In summary, this utility model has the following beneficial effects: the seed strips can be first graded by the screening gap of the conveying component, and then the integrity of the seed strip buds can be detected by the camera of the vision inspection component, realizing the automated combination of coarse and fine screening and quality screening. At the same time, the V-shaped bottom and ball bearing design of the receiving trough can reduce the friction of the seed strips and ensure that they are within the shooting range. Combined with the cylinder control of the receiving trough offset to realize automatic screening, the process of manual secondary inspection and rejection is reduced, as well as the problems of low efficiency and easy error of manual screening after mechanized cutting, thus improving the continuity and reliability of seed strip screening. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the visual inspection component in this utility model. Figure 3 This is a bottom view of the visual inspection component in this utility model. Figure 4 This is a schematic diagram of the conveying component in this utility model; Figure 5 This is a schematic diagram of the screening gap opening position in the conveying assembly of this utility model; Figure 6 This is a schematic diagram of the feed inlet structure in this utility model.

[0013] In the picture: 1. Conveying assembly; 101. Conveying frame; 102. Roller; 103. Conveyor belt; 104. Pulley; 105. Belt A; 106. Double groove pulley; 107. Belt B; 108. Motor; 109. Screening gap; 2. Vision inspection assembly; 201. Receiving trough; 202. Ball bearing; 203. Discharge port; 204. Camera; 205. Support frame; 206. Cylinder; 207. Receiving box; 208. Hinge A; 209. Hinge B; 3. Feed hopper; 301. Fixing frame; 302. Guide chute. Detailed Implementation

[0014] 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 scope of protection of the present utility model.

[0015] Example: The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0016] Please see Figure 1-6This utility model provides a technical solution: a poplar seed strip screening device, including a conveying component 1, which is provided with a plurality of screening gaps 109 for screening seed strips of different thicknesses. A visual inspection component 2 is placed at the bottom of each screening gap 109 for detecting the integrity of the seed strip buds and whether there is splitting at the cut, as well as for screening and classifying. In this embodiment: the visual detection component 2 includes several receiving troughs 201 for receiving seed strips after screening through the screening gap 109. Each receiving trough 201 has a camera 204 mounted on its top side, with a frame rate set to 30 frames per second to ensure clear capture of rapidly moving seed strips. The camera 204 is connected to an image processing system and can identify the shape of the bud (a complete bud is elliptical). The camera 204 is also equipped with an infrared sensor. When a seed strip is detected falling into the receiving trough 201, the camera 204 is triggered to start capturing images and transmits the image signal to the processing system to identify the shape of the bud. The complete bud is oval-shaped, and the bottom of the receiving trough 201 is equipped with a V-shaped bottom to keep the receiving seed strips always within the shooting range of the camera 204. The included angle of the V-shaped bottom is set at 60° to ensure that seed strips of different thicknesses can naturally fit the bottom of the trough, and the length of the bottom of the trough is within the shooting range of the camera 204 to avoid missing the end of the seed strip. Several ball bearings 202 are set on the V-shaped bottom to reduce the friction between the seed strip and the V-shaped bottom. The ball bearings 202 are made of nylon and are evenly distributed on the V-shaped bottom. The top of the ball bearings 202 is slightly higher than the surface of the bottom of the trough, which reduces the sliding friction of the seed strip and reduces the wear of the skin.

[0017] like Figure 2-3 As shown, a support frame 205 and a receiving box 207 are provided at the bottom of the receiving trough 201.

[0018] In this embodiment: a support frame 205 is provided at the bottom of the receiving trough 201. The top middle part of the support frame 205 and the bottom middle part of the receiving trough 201 are connected by a hinge A208. A cylinder 206 is provided at one end of the support frame 205. The cylinder 206 is a miniature pneumatic cylinder with a response time ≤0.2 seconds. The output end of the cylinder 206 and the bottom side of the receiving trough 201 are connected by a hinge B209. The vertical extension and retraction of the cylinder 206 and the cooperation of the hinge A208 control the vertical displacement of the receiving trough 201. Both ends of the receiving trough 201 are provided with openings for material discharge. The discharge port 203 and the receiving trough 201 are both equipped with receiving boxes 207 for collecting the screened seed strips. The receiving box 207 adopts a drawer-type structure with a sponge pad inside. The vertical distance between the box opening and the discharge port 203 is ≤100mm to reduce the impact when the seed strips fall. Through the cooperation of hinges A208 and B209, the receiving trough 201 can be tilted to ensure that qualified seed strips fall from one discharge port 203 into the qualified receiving box 207, and unqualified seed strips are discharged from the other discharge port 203 into the unqualified receiving box 207.

[0019] like Figure 4-5 As shown, there is a conveying assembly 1 for conveying seed strips and a screening gap 109 for screening seed strips of different thicknesses; In this embodiment: the conveying assembly 1 includes a conveying frame 101, a plurality of rollers 102 are installed in the middle of the conveying frame 101, a conveyor belt 103 for conveying seed strips is laid between every two sets of rollers 102, and bolt groups for fixing are provided at both ends of the plurality of rollers 102. A feed hopper 3 is provided at the top of one end of the conveying frame 101, and a pulley 104 is provided at one end of the plurality of rollers 102. The plurality of pulleys 104 are connected together to the belt A105, and a double groove pulley 106 is provided on one side of the conveying frame 101. One end of the belt A105 is sleeved in the double groove pulley 106. The double groove pulley 106 is connected to the motor 108 through the belt B107 to realize the belt drive of the conveying assembly 1.

[0020] like Figure 6 As shown, the feed hopper 3 is used for feeding materials; In this embodiment: the feed hopper 3 includes a fixed frame 301, the fixed frame 301 has a cavity for feeding, and the bottom of the cavity has a guide groove 302, so that the seed strip and the screening gap 109 are aligned during discharge.

[0021] Working principle: The poplar seedlings to be screened enter the conveying assembly 1 through the feed hopper 3. The guide trough 302 of the feed hopper ensures that the seedlings enter the conveyor belt 103 in a uniform direction (parallel to the screening gap 109). The screening gap 109 of the conveying assembly 1 grades the seedlings according to their diameter. Seedlings of different thicknesses fall into the visual inspection assembly 2 below through the corresponding gap. The camera 204 of the visual inspection assembly 2 captures and inspects the integrity of the seedling buds. The width of the screening gap 109 can be adjusted by replacing the side baffles of the conveyor belt 103 to accommodate different seedlings. The thickness of seedlings of the same variety varies; the parameters of camera 204 can be finely adjusted by the control system to adapt to different lighting environments (such as indoors and outdoors). According to the detection results, if the image processing system determines that the seedlings are qualified, the control cylinder 206 extends, the receiving trough 201 tilts to the left, and the seedlings fall from the left discharge port 203 into the receiving box 207; if it is determined to be unqualified, the cylinder 206 shortens, the receiving trough 201 tilts to the right, and the seedlings are discharged from the right discharge port 203, so that qualified and unqualified seedlings fall into the corresponding receiving boxes 207 from the discharge ports 203 at both ends respectively.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0023] In this specification, the illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples.

[0024] Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A screening device for non-fluffy poplar tree species, characterized in that, include: The conveying assembly (1) is provided with a plurality of screening gaps (109) for screening seed strips of different thicknesses. At the bottom of each of the screening gaps (109) is a visual detection assembly (2) for detecting seed strip buds. The visual inspection component (2) includes several receiving slots (201) for receiving seed strips after screening by the screening gap (109). Each of the receiving slots (201) is equipped with a camera (204) on one side top, and the camera (204) is connected to an image processing system. The bottom of the receiving trough (201) is provided with a support frame (205). The top of the middle part of the support frame (205) and the bottom of the middle part of the receiving trough (201) are connected by a hinge A (208). One end of the support frame (205) is provided with a cylinder (206). The output end of the cylinder (206) and the bottom of one side of the receiving trough (201) are connected by a hinge B (209). Both ends of the receiving trough (201) are provided with discharge ports (203) for discharging materials. The bottom of the discharge ports (203) at both ends is provided with a receiving box (207). The tilt angle of the receiving trough (201) is adjusted by the up-and-down extension and retraction movement of the cylinder (206) and the cooperation of the hinge A (208). When the image processing system determines that the seed strip is qualified, it will extend the cylinder (206) to tilt the receiving trough (201) to the left, and the seed strip will fall from the left discharge port (203) into the qualified receiving box (207). If it is determined to be unqualified, the cylinder (206) will shorten, the receiving trough (201) will tilt to the right, and the seed strip will be discharged from the right discharge port (203) to the unqualified receiving box (207).

2. The poplar seed strip screening device according to claim 1, characterized in that, The bottom of the receiving trough (201) is provided with a V-shaped hopper bottom to keep the received seed strips always within the shooting range of the camera (204). The V-shaped hopper bottom is provided with a number of ball bearings (202) to reduce the friction between the seed strips and the V-shaped hopper bottom.

3. The poplar seed strip screening device according to claim 2, characterized in that, Both ends of the receiving trough (201) are equipped with receiving boxes (207) for collecting the screened seed strips.

4. The poplar seed strip screening device according to claim 1, characterized in that, The conveying assembly (1) includes a conveying frame (101), a plurality of rollers (102) are installed in the middle of the conveying frame (101), a conveyor belt (103) for conveying seed strips is laid between every two sets of rollers (102), and bolt groups for fixing are provided at both ends of the plurality of rollers (102), and a feed hopper (3) is provided at the top of one end of the conveying frame (101).

5. The poplar seed strip screening device according to claim 4, characterized in that, Each of the rollers (102) is provided with a pulley (104) at one end. The pulleys (104) are connected to belt A (105). A double groove pulley (106) is provided on one side of the conveyor frame. One end of belt A (105) is fitted inside the double groove pulley (106). The double groove pulley (106) is connected to the motor (108) through belt B (107) to realize the belt drive of the conveyor assembly (1).

6. The poplar seed strip screening device according to claim 4, characterized in that, The feed hopper (3) includes a fixed frame (301), and a cavity for feeding is provided in the fixed frame (301). A guide groove (302) is provided at the bottom of the cavity so that the seed strip is aligned with the direction of the screening gap (109) when discharging.

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