Screw sorting device based on machine vision

Abstract

The utility model discloses a screw sorting device based on machine vision, which comprises a vibrating disk, a conveying mechanism positioned on the right side of the vibrating disk and used for conveying screws, and a visual inspection component connected onto the conveying mechanism and used for identifying whether the screws are qualified or not, an unqualified screw discharging assembly and a qualified screw collecting bin are arranged at the tail end of the conveying mechanism in the conveying direction. The screw sorting device has the advantages of being simple in structure, convenient to use and easy to maintain, traditional manual sorting can be replaced, whether threads are qualified or not can be judged by rapidly recognizing the thread length and the head diameter of the screws, the qualified screws are conveyed into the qualified screw receiving bin, and the production efficiency is improved. And unqualified screws are pushed into the unqualified screw receiving bin under the action of the discharging conveying part, the automation degree is high, meanwhile, the screw sorting efficiency and accuracy are improved, and the automatic screw sorting device is suitable for automatic and accurate sorting of the screws.

Description

Technical Field

[0001] The utility model relates to the field of screw production facilities, in particular to a screw sorting device based on machine vision. Background Art

[0002] With the development of industrial automation, enterprises have increasingly higher requirements for the degree of automation in the production process. In the field of screw production, there is also an urgent need for a device that can sort screws to improve production efficiency and product quality. In the traditional screw production and use process, the sorting of screws mainly relies on manual labor, which has disadvantages such as low efficiency, low accuracy and high cost. Utility Model Content

[0003] The purpose of the present utility model is to provide a screw sorting device based on machine vision to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a machine vision-based screw sorting device, comprising a vibrating plate, a conveying mechanism located to the right of the vibrating plate and used to convey screws, and a visual inspection component connected to the conveying mechanism and used to identify whether the screws are qualified; the conveying mechanism is composed of a conveying component and a conveying power unit, the conveying component including a left conveying part and a right conveying part that are laterally aligned with each other, and a gap is formed between the left and right conveying parts for accommodating screws, and the lateral length of the right conveying part does not exceed the lateral length of the left conveying part;

[0005] The conveying direction end of the conveying mechanism is provided with an unqualified screw blanking component and a qualified screw receiving bin, and the unqualified screw blanking component is located on the left side of the qualified screw receiving bin and is connected to the visual detection component; the unqualified screw blanking component includes an unqualified screw receiving bin located on the front of the right conveying part, and a blanking conveying part movably placed on the right side of the right conveying part for allowing unqualified screws to fall.

[0006] Furthermore, the conveying assembly also includes a conveying motor and a transmission wheel connected to the output end of the conveying motor; the left conveying part is composed of a No. 1 vertical plate and a No. 1 conveyor belt; the right conveying part is composed of a No. 2 vertical plate and a No. 2 conveyor belt, and the unloading conveying part includes a movable plate and a No. 3 conveyor belt. The installation positions of the No. 1 vertical plate, the No. 2 vertical plate and the movable plate are flush with each other, and the transmission wheel is connected to the No. 1 conveyor belt, the No. 2 conveyor belt and the No. 3 conveyor belt.

[0007] Furthermore, a gap adjustment portion is connected between the No. 1 vertical plate and the No. 2 vertical plate, and the gap adjustment portion is used to change the gap between the No. 1 conveyor belt and the No. 2 conveyor belt.

[0008] Furthermore, the unloading conveying part also includes a telescopic cylinder located on the front of the movable plate and connected above the unqualified screw receiving bin, and the telescopic cylinder is electrically connected to the visual inspection component.

[0009] Furthermore, the visual detection component includes a first CCD recognition part for detecting the length of the thread, and a second CCD recognition part for detecting the diameter of the screw head.

[0010] The beneficial effects of the present invention are as follows: the present invention has the characteristics of simple structure, easy use and easy maintenance, can replace traditional manual sorting, can quickly identify the thread length and screw head diameter of the screw through the first CCD identification part and the second CCD identification part to determine whether the thread is qualified, and the qualified screws are transported to the qualified screw receiving bin, and the unqualified screws are pushed into the unqualified screw receiving bin under the action of the unloading conveying part, with a high degree of automation, and also improves the efficiency and accuracy of screw sorting, and is suitable for automatic and precise sorting of screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural stereogram of the utility model under a first viewing angle;

[0012] Figure 2 For this utility model Figure 1 Schematic diagram of the structure without the vibration plate installed;

[0013] Figure 3 For this utility model Figure 3 A magnified schematic diagram of the local structure;

[0014] Figure 4 For this utility model Figure 1 A three-dimensional diagram of the structure from another viewing angle;

[0015] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the local structure.

[0016] In the figure: 1 vibration plate, 2 transmission assembly, 21 vertical plate No. 1, 211 conveyor belt No. 1, 22 vertical plate No. 2, 221 conveyor belt No. 2, 222 bottom plate, 23 front conveyor wheel, 24 rear conveyor wheel, 3 gap adjustment part, 4 first CCD recognition part, 5 second CCD recognition part, 6 unloading conveying part, 601 telescopic cylinder, 602 movable plate, 7 qualified screw collecting bin, 8 unqualified screw collecting bin, 9 transmission motor, 901 transmission wheel, 10 support plate, 11 guide plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-5 , which provides a technical solution for the utility model, a screw sorting device based on machine vision, comprising a vibrating plate 1, a conveying mechanism located on the right side of the vibrating plate 1 and used to convey screws, and a visual inspection component connected to the conveying mechanism and used to identify whether the screws are qualified; the conveying mechanism is composed of a conveying component 2 and a conveying power part, the conveying component 2 comprises a left conveying part and a right conveying part that are flush with each other laterally, and a gap for accommodating screws is formed between the left conveying part and the right conveying part, and the lateral length of the right conveying part does not exceed the lateral length of the left conveying part; an unqualified screw blanking component and a qualified screw receiving bin 7 are provided at the end of the conveying direction of the conveying mechanism, and the unqualified screw blanking component is located on the left side of the qualified screw receiving bin 7 and is connected to the visual inspection component; the unqualified screw blanking component comprises an unqualified screw receiving bin 8 located on the front of the right conveying part, and a blanking conveying part 6 movably placed on the right side of the right conveying part for allowing unqualified screws to fall; the visual inspection component comprises a screw receiving bin 8 for detecting thread The first CCD recognition part 4 for detecting the length, and the second CCD recognition part 5 for detecting the diameter of the screw head; wherein the mentioned conveying component 2 also includes a conveying motor 9, and a transmission wheel 901 connected to the output end of the conveying motor 9; the left conveying part is composed of the No. 1 vertical plate 21 and the No. 1 conveyor belt 211; the right conveying part is composed of the No. 2 vertical plate 22 and the No. 2 conveyor belt 221, and the bottoms of the No. 1 vertical plate 21 and the No. 2 vertical plate 22 are both horizontally connected with a bottom plate 222, and the bottom of the bottom plate 222 is provided with a support plate 10, which is used to support the conveying component 2, the qualified screw receiving bin 7 and the unqualified screw receiving bin 8; the overall cross-sectional shape of the No. 1 vertical plate 21 and the No. 2 vertical plate 22 is a "concave" structure; a conveying wheel assembly is provided between the top surface of the No. 1 vertical plate 21 and the top surface of the No. 2 vertical plate 22, and the mentioned conveying wheel assembly includes a front conveying wheel 23 and a rear conveying wheel 24, and the front conveying wheel 23, the rear conveying wheel 24 and the transmission wheel 901 are wound together through the conveyor belt.

[0019] In this embodiment, the mentioned unloading conveying part 6 includes a movable plate 602 and a No. 3 conveyor belt. The unloading conveying part 6 also includes a telescopic cylinder 601 located on the front of the movable plate 602 and connected above the unqualified screw collecting bin 8. The telescopic cylinder 601 is electrically connected to the visual detection component, and the main visual appearance of the movable plate 602 is an inverted "L" shape structure; wherein, the installation positions of the No. 1 vertical plate 21, the No. 2 vertical plate 22 and the movable plate 602 are flush with each other, and the transmission wheel 901 is connected to the No. 1 conveyor belt 211, the No. 2 conveyor belt 221, and the No. 3 conveyor belt; a gap adjustment part 3 is connected between the No. 1 vertical plate 21 and the No. 2 vertical plate 22, and the gap adjustment part 3 is used to change the gap between the No. 1 conveyor belt 211 and the No. 2 conveyor belt 221. The gap adjustment part 3 adopts but is not limited to screws. Rod, through the screw rod, can change the distance between the No. 1 vertical plate 21 and the No. 2 vertical plate 22, thereby changing the gap between the No. 1 conveyor belt 211 and the No. 2 conveyor belt 221; wherein, when the mentioned conveying motor 9 is running, it drives the No. 1 conveyor belt 211, the No. 2 conveyor belt 221 and the No. 3 conveyor belt to rotate in a circle to realize the transmission of screws; when the telescopic cylinder 601 is stationary and not running, the movable plate 602 is consistent with the extension direction of the length of the plate body of the No. 2 vertical plate 22; wherein, the bottom of the movable plate 602 is provided with a guide plate 11, and the guide plate 11 is located below the No. 3 conveyor belt. The guide plate 11 can be used to guide unqualified screws into the unqualified screw collecting bin 8; the structure and principle of the vibration plate 1, the conveying motor 9 and the telescopic cylinder 601 are well-known technologies on the market, so they are not described here.

[0020] The screw sorting device based on machine vision is used. When screws of different specifications are arranged through the vibration array of the vibration disk 1 and pass through the guide track of the vibration disk 1, they enter the conveyor belt formed by the No. 1 conveyor belt 211 and the No. 2 conveyor belt 221 for transportation. The screws are identified and classified according to the sorting requirements through the set first CCD recognition unit 4 and the second CCD recognition unit 5. The qualified screws enter the qualified screw receiving bin 7, and the unqualified screws fall into the unqualified screw receiving bin 8 through the movement of the telescopic cylinder 601; the first CCD recognition unit 4 and the second CCD recognition unit 5 mentioned above adopt but are not limited to CCD cameras; wherein, the first CCD recognition unit 4 and the second CCD recognition unit 5 cooperate with the external controller to control the vibration disk 1, the conveying motor 9 and the telescopic cylinder 601. The operation of the cylinder 601, that is, when the CCD recognition part of one of the first CCD recognition part 4 and the second CCD recognition part 5 detects that the screw is unqualified, the vibration plate 1 and the conveying motor 9 are controlled to stop running, and then the controller controls the telescopic cylinder 601 to operate to open the gap between the No. 1 conveyor belt 211 and the No. 3 conveyor belt, so that the unqualified screws automatically fall onto the guide plate 11 and fall into the unqualified screw receiving bin 8 for collection; when the CCD recognition part of one of the first CCD recognition part 4 and the second CCD recognition part 5 detects that the screw is qualified, the vibration plate 1 and the conveying motor 9 operate normally, and at this time the telescopic cylinder 601 stops running, and the No. 1 conveyor belt 211, the No. 2 conveyor belt 221 and the No. 3 conveyor belt rotate to transfer the qualified screws to the qualified screw receiving bin 7.

[0021] In summary: This screw sorting device based on machine vision is suitable for the field of screw sorting. It can solve the limitations of traditional screw sorting and meet the needs of automated production. It can use the advantages of CCD vision technology to improve the efficiency and accuracy of screw sorting. It can achieve fast and accurate sorting, improve sorting efficiency, and has a compact structure, simple operation, and low maintenance cost.

[0022] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0023] The above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent for the utility model; it should be understood that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention; in the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection; among them, there are various ways of detachable installation, for example, it can be through a method of plugging and snap-fitting, for example, through a method of bolt connection, etc.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw sorting device based on machine vision, characterized by: The device comprises a vibrating plate, a conveying mechanism located on the right side of the vibrating plate and used to convey screws, and a visual inspection component connected to the conveying mechanism and used to identify whether the screws are qualified. The conveying mechanism is composed of a conveying component and a conveying power unit. The conveying component includes a left conveying part and a right conveying part that are laterally flush with each other, and a gap is formed between the left conveying part and the right conveying part for accommodating the screws. The lateral length of the right conveying part does not exceed the lateral length of the left conveying part. The conveying direction end of the conveying mechanism is provided with an unqualified screw blanking component and a qualified screw receiving bin, and the unqualified screw blanking component is located on the left side of the qualified screw receiving bin and is connected to the visual detection component; the unqualified screw blanking component includes an unqualified screw receiving bin located on the front of the right conveying part, and a blanking conveying part movably placed on the right side of the right conveying part for allowing unqualified screws to fall.

2. The machine vision-based screw sorting device according to claim 1, characterized in that: The conveying assembly also includes a conveying motor and a transmission wheel connected to the output end of the conveying motor; the left conveying part is composed of a No. 1 vertical plate and a No. 1 conveyor belt; the right conveying part is composed of a No. 2 vertical plate and a No. 2 conveyor belt, and the unloading conveying part includes a movable plate and a No. 3 conveyor belt. The installation positions of the No. 1 vertical plate, the No. 2 vertical plate and the movable plate are flush with each other, and the transmission wheel is connected to the No. 1 conveyor belt, the No. 2 conveyor belt and the No. 3 conveyor belt.

3. The machine vision-based screw sorting device according to claim 2, characterized in that: A gap adjusting portion is connected between the No. 1 vertical plate and the No. 2 vertical plate, and the gap adjusting portion is used to change the gap between the No. 1 conveyor belt and the No. 2 conveyor belt.

4. The machine vision-based screw sorting device according to claim 1, characterized in that: The unloading conveying part also includes a telescopic cylinder located on the front of the movable plate and connected above the unqualified screw receiving bin, and the telescopic cylinder is electrically connected to the visual detection component.

5. The screw sorting device based on machine vision according to claim 1, characterized in that: The visual detection component includes a first CCD recognition part for detecting the length of the thread, and a second CCD recognition part for detecting the diameter of the screw head.

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