KR20240116262A - Apparatus for inspecting components - Google Patents

Abstract

A parts discrimination device is disclosed. A parts discrimination device according to an embodiment includes a transfer unit for transferring parts; a photographing unit that photographs the component; And a control unit that analyzes the part image data captured and generated by the photographing unit and determines whether the part is defective, wherein the control unit analyzes the part image data using a previously learned part analysis algorithm. You can.

Description

Component identification device {APPARATUS FOR INSPECTING COMPONENTS}

This disclosure relates to a component discrimination device.

In the conventional parts manufacturing process, defective parts were directly checked and classified by workers with their own eyes. However, this method caused extreme physical fatigue to workers and caused the workers' discernment and concentration to decline over time, raising concerns that parts would be misclassified. In addition, there was a problem that the price competitiveness of parts was decreasing due to the increase in labor costs.

Therefore, there is a need for the development of new technology that can automatically determine whether a part is defective.

KR 10-1331188 B1

The technical idea of the present disclosure is to solve the above-mentioned problems, and its purpose is to provide a technology that can automatically determine whether a part is defective.

The problem to be solved by the present invention is not limited to the above-mentioned problem, and other technical problems not mentioned will be clearly understood by those skilled in the art from the contents described later.

In order to achieve this object, in one embodiment of the present invention, a parts discrimination device includes a transfer unit for transferring parts; a photographing unit that photographs the component; And a control unit that analyzes the part image data captured and generated by the photographing unit and determines whether the part is defective, wherein the control unit analyzes the part image data using a previously learned part analysis algorithm. You can.

In addition, the part analysis algorithm is a deep neural network previously learned using reference data, the reference data includes normal image data generated by photographing a normal part, and the control unit determines that the part image data is the normal image data. It can be controlled to compare whether it matches and if it does not match, the part is classified as a defective product.

And, the transfer unit includes a first frame member having a constant length; a second frame member spaced apart from the first frame member at a predetermined interval; a third frame member supported by the first and second frame members; a transfer roller member coupled between the first frame and the second frame and rotating in one direction; a transfer belt member supported by the transfer roller member and transporting the component in one direction; A detection sensor member that detects parts on the transport belt member; a positioning member that adjusts the position of the component so that the component is located at the center of the transport belt member; and a direction changing member coupled to the third frame member and changing the direction of movement of the part moving on the transport belt member, wherein the part discrimination device is disposed below the transport belt member, and the transport belt member A defective product storage member that stores defective products that fall from the belt member; And a good product storage member disposed below the transport belt member and storing good products dropped from the transport belt member. When the detection sensor member detects the part, the control unit operates the transport belt member. The part image data is generated and analyzed by stopping for a certain period of time and controlling the photographing unit. If the part is determined to be defective, the angle of the direction changing member is adjusted so that the part moves along the direction changing member. It can be controlled so that the defective products can be stored in the storage member.

In addition, the position adjustment member includes a first adjustment plate coupled to the first frame and covering a portion of the transfer belt member; and a second adjusting plate coupled to the second frame and covering a portion of the conveying belt member, wherein the first adjusting plate allows the component to move to the center of the conveying belt member along the circumference of the first adjusting plate. It has a first diagonal portion that helps the part move to the center of the conveying belt member along the circumference of the second adjusting plate, and the second adjusting plate has a second diagonal portion that helps the part to move to the center of the conveying belt member, and the direction changing member has a certain area. a transfer board having a flat shape and being perpendicular to the transfer belt member; A connector coupled to one side of the transfer board; And a regulator that rotates the connector at a certain angle.

The means for solving the above problems are merely illustrative and should not be construed as intended to limit the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description of the invention.

As described above, according to various embodiments of the present invention, it is possible to automatically determine whether a part is defective and store it by good and defective parts, thereby reducing labor costs required for sorting parts and replacing the existing method of sorting with the naked eye. Compared to this, classification accuracy is improved and classification work can be done more quickly.

The effects according to various embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is a conceptual diagram schematically showing a component discrimination device according to an embodiment of the present invention.
Figure 2 is a block diagram schematically showing the main configuration of a parts discrimination device according to an embodiment of the present invention.
Figure 3 is a part determination process according to an embodiment of the present invention, and schematically shows the process in which a part is determined as a good product and is moved to a good product storage member.
Figure 4 is a part determination process according to an embodiment of the present invention, and schematically shows a process in which a part is determined as a defective product and is moved to a defective product storage member.

Preferred embodiments of the present invention will be described in more detail with reference to the attached drawings, but technical parts that are already well-known will be omitted or compressed for brevity of explanation.

It should be noted that references herein to “one” or “one” embodiment of the invention do not necessarily refer to the same embodiment, and they refer to at least one.

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular expressions include plural expressions unless the context clearly indicates a different meaning.

In the following embodiments, terms such as include or have mean that the features or components described in the specification exist, and do not exclude in advance the possibility of adding one or more other features or components.

Figure 1 is a conceptual diagram schematically showing a component discrimination device according to an embodiment of the present invention, and Figure 2 is a block diagram schematically showing the main configuration of a component discrimination device according to an embodiment of the present invention. Referring to FIGS. 1 and 2 , the part discrimination device 10 according to an embodiment may include a transfer unit 100, a photographing unit 200, and a control unit 300.

In one embodiment, the transfer unit 100 is a device for transferring the component 20, and the transfer unit 100 includes a first frame member 110, a second frame member 120, a third frame member 130, and a transfer roller. It may include a member 140, a transfer belt member 150, a detection sensor member 160, a position adjustment member 170, a direction change member 180, a defective product storage member 191, and a good product storage member 192. there is.

In one embodiment, the first frame member 110 is a frame having a constant length, and the first frame member 110 may be spaced apart from the second frame member 120 at a certain interval. In one embodiment, the third frame member 130 is coupled to the upper side of the first frame member 110 and the second frame member 120, and is connected by the first frame member 110 and the second frame member 120. It can be supported.

In one embodiment, the transfer roller member 140 is coupled between the first frame member 110 and the second frame member 120 and can rotate in one direction. In one embodiment, the transport roller member 140 is connected to the roller pulley 141, and the roller pulley 141 may be connected to the motor pulley 142 by a belt 143. As the motor pulley 142 is coupled to the drive motor 144, when the drive motor 144 rotates in one direction, the motor pulley 142 and the roller pulley 141 rotate together and the transfer roller member 140 also rotates. It can rotate. Additionally, a plurality of roller members 145 may be installed between the first frame member 110 and the second frame member 120.

In one embodiment, the transport belt member 150 is supported by the transport roller member 140, and when the transport roller member 140 rotates in one direction, the transport belt member 150 moves the part 20 in one direction. It can be transferred to .

In one embodiment, the detection sensor member 160 can detect the component 20 on the transport belt member 150. In one specific example, the detection sensor member 160 may include a light projection device 161 and a light reception device 162. The light projection device 161 is installed on the upper side of the first frame member 110, and the light receiving device 162 is installed on the upper side of the second frame member 120. When the light emitting device 161 irradiates light toward the light receiving device 162, the light receiving device 162 can receive the irradiated light and generate an electrical signal.

For example, when the part 20 on the transport belt member 150 is located between the light emitting device 161 and the light receiving device 162, the amount of light reaching the light receiving device 162 changes, so the light received The device 162 outputs an electrical signal according to the change in the amount of light received and transmits it to the control unit 300, and the control unit 300 operates the driving motor 144 for a certain period of time (for example, 1 second). It can be controlled so that the transfer of the part 20 is stopped by stopping.

In one embodiment, the position adjustment member 170 may adjust the position of the component 20 so that the component 20 is located in the center of the transport belt member 150. For example, the position adjustment member 170 may include a first adjustment plate 171 and a second adjustment plate 172. In one embodiment, the first adjustment plate 171 is coupled to the first frame member 110 and may cover a portion of the transport belt member 150. A first diagonal portion 1711 may be formed on the first adjustment plate 171 to help the component 20 move to the center of the transport belt member 150 along the circumference of the first adjustment plate 171.

In one embodiment, the second adjustment plate 172 is coupled to the second frame member 120 and may cover a portion of the transport belt member 150. A second diagonal portion 1721 may be formed on the second adjustment plate 172 to help the component 20 move to the center of the transport belt member 150 along the circumference of the second adjustment plate 172. According to one embodiment, the separation space formed between the first adjustment plate 171 and the second adjustment plate 172 may be implemented as an access road to help the component 20 enter the central point C1 of the transfer belt member 150. You can.

According to one specific example, the component 20 on the transport belt member 150 moves along the first diagonal portion 1711 or the second diagonal portion 1721 and is naturally disposed in the center of the transport belt member 150. You can.

In one embodiment, the direction changing member 180 is coupled to the third frame member 130 and can change the direction of movement of the component 20 moving on the transport belt member 150. According to one embodiment, the direction changing member 180 may include a transfer board 181, a connector 182, and a regulator 183.

In one embodiment, the transfer board 181 has a flat plate shape with a constant area and may be perpendicular to the transfer belt member 150. When the transfer board 181 contacts the transfer belt member 150, the moving speed of the transfer belt member 150 may be reduced due to friction, so the transfer board 181 is spaced a certain distance away from the transfer belt member 150. It is desirable to maintain the status quo.

Additionally, in one embodiment, the length from one end to the other end of the transfer board 181 may be set so that there is a portion of the transfer board 181 that does not overlap the transfer belt member 150. That is, because the end of the transfer board 181 protrudes further forward than the end of the transfer belt member 150, the transfer member is attached to the part 20 until just before the part 20 falls from the end of the transfer belt member 150. The transfer direction can be maintained stably.

In one embodiment, the connector 182 is coupled to the upper side of the transfer board 181, and can connect the transfer board 181 and the controller 183, which will be described later, to each other. In one embodiment, the regulator 183 may rotate the connector 182 at a certain angle.

In one embodiment, the defective product storage member 191 is disposed below the transport belt member 150 and can store defective products that fall from the transport belt member 150. In one embodiment, the good product storage member 192 is disposed below the transport belt member 150 and can store good products that fall from the transport belt member 150.

In one embodiment, the photographing unit 200 may generate part image data by photographing the part 20. In one embodiment, the control unit 300 may analyze part image data generated by the photographing unit 200 and determine whether the part 20 is defective. Specifically, the control unit 300 may analyze part image data using a previously learned part analysis algorithm.

According to one specific example, the parts analysis algorithm used by the control unit 300 may be applied as a deep neural network learned in advance using reference data. Here, the reference data may include normal image data generated by photographing a normal part. In this specification, a normal part means a part in good condition (i.e., a part in a non-defective condition).

In one embodiment, the control unit 300 compares whether the part image data matches normal image data and, if not, controls the part 20 to be classified as a defective product. According to one specific example, when the detection sensor member 160 detects the part 20 on the transport belt member 150, the control unit 300 stops the operation of the transport belt member 150 for a certain period of time and the photographing unit ( 200) is controlled to generate and analyze part image data, and if the part 20 is determined to be a defective product, the connector 182 is rotated at a certain angle to change the direction of the transfer board 181 to the defective product storage member 191. It can be controlled to point towards . Therefore, when the defective product moving along the transfer board 181 reaches the end of the transfer belt member 150, it can fall and be naturally stored inside the defective product storage member 191.

According to one embodiment, the transfer board 181 is fixed to face the good product storage member 192 and is transferred only for a certain period of time (for example, 5 seconds) only when the part 20 is determined to be defective. The direction of the board 181 is toward the defective product storage member 191, and the control unit 300 returns the direction of the transfer board 181 to its initial position after a certain period of time has elapsed from the point when the direction of the transfer board 181 was changed. You can control it to come. In other words, since the direction of the transfer board 181 is limitedly changed only when a defective product occurs, the operation of the controller 183 can be minimized, thereby lowering power consumption and contributing to improving equipment durability.

Figure 3 is a part determination process according to an embodiment of the present invention, and schematically shows a process in which a part is determined as a good product and is moved to a storage member for the good product. Referring to Figure 3, the process in which a part is determined to be a good product and is moved to the good product storage member 192 is schematically described as follows. The transfer board 181 is fixed in a state facing the non-defective product storage member 192, and when a part 40 before being determined as a non-defective product is placed on the transfer belt member 150, the first diagonal portion 1711 Therefore, while moving, it is located at the central point (C1) of the transport belt member (150). The part 40 located at the central point (C1) is transported forward, and when the part 40 is detected by the detection sensor member 160, the control unit 300 stops the operation of the driving motor 144 for 1 second and stops the part 40. (40) stops at the shooting point (C2). At this time, the photographing unit 200 photographs the part 40 to generate part image data, and the control unit 300 analyzes the part image data. If the photographed part 40 is determined to be a good product, the control unit 300 does not rotate the connector 182. Therefore, the transfer board 181 maintains its position facing the good product storage member 192, and when the stop time of the drive motor 144 ends, the drive motor 144 operates again and the good product is transferred to the transfer board 181. Therefore, it may move forward and fall and be stored inside the good product storage member 192.

Figure 4 is a part determination process according to an embodiment of the present invention, and schematically shows a process in which a part is determined as a defective product and is moved to a defective product storage member. Referring to Figure 4, the process in which a part is determined to be defective and is moved to the defective product storage member 191 is schematically described as follows. The transfer board 181 is fixed in a state facing the good product storage member 192, and when a part 30 before being determined as a defective product is placed on the transfer belt member 150, the second diagonal portion 1721 is formed. Therefore, while moving, it is located at the central point (C1) of the transport belt member (150). The part 30 located at the central point (C1) is transported forward, and when the part 30 is detected by the detection sensor member 160, the control unit 300 stops the operation of the driving motor 144 for 1 second and stops the part 30. (30) stops at the shooting point (C2). At this time, the photographing unit 200 photographs the part 30 to generate part image data, and the control unit 300 analyzes the part image data. When the photographed part 30 is determined to be a defective product, the control unit 300 rotates the connector 182 at a certain angle to control the transfer board 181 to face the defective product storage member 191. When the stop time of the drive motor 144 ends, the drive motor 144 operates again and the defective product moves forward along the transfer board 181, falls, and may be stored inside the defective product storage member 191. When a certain period of time elapses from the point at which the direction of the transfer board 181 is changed, the control unit 300 controls the direction of the transfer board 181 to return to its initial position.

As described above, according to various embodiments of the present invention, it is possible to automatically determine whether a part is defective and store it by good and defective parts, thereby reducing labor costs required for sorting parts and replacing the existing method of sorting with the naked eye. Compared to this, classification accuracy is improved and classification work can be done more quickly.

In addition, according to various embodiments of the present invention, if a plurality of storage members for storing each part are arranged, the angle at which the connector rotates is subdivided for each part, and reference data is prepared for each part, several types of parts can be combined into one. Since it can be classified as a part identification device, not only can equipment installation costs be reduced, but it also has the advantage of being excellent in terms of workability.

As described above, the specific description of the present invention has been made through examples, but since the above-described embodiments are only explained by referring to preferred examples of the present invention, it should not be understood that the present invention is limited to the above-described embodiments. No, the scope of rights of the present invention should be understood in terms of the claims described later and the concept of equivalents thereof.

*Please note that this project was researched with support from the Ministry of Trade, Industry and Energy and the Korea Institute for Advancement of Technology (Detailed project number: P0020549, Ministry name: Ministry of Trade, Industry and Energy, Project management (specialized) organization name: Korea Agency for Advancement of Technology, Project name: Creative Convergence Engineering Talent development support, Project name: Establishment of a creative convergence global smart factory technology talent training hub, Project implementation organization name: Chungbuk University of Health Sciences Industry-Academic Cooperation Foundation, Research period: 2022.03.01 ∼ 2023.02.28.

10: Parts discrimination device
100: transfer unit
110: first frame member
120: second frame member
130: Third frame member
140: Transfer roller member
141: roller pulley
142: motor pulley
143: belt
144: driving motor
145: roller member
150: Transport belt member
C1: Central point
C2: Shooting point
160: Detection sensor member
161: Light projection device
162: light receiving device
170: Position adjustment member
171: 1st revised edition
1711: 1st diagonal part
172: Second Adjusted Edition
1721: Second diagonal part
180: Direction change member
181: Transfer board
182: connector
183: regulator
191: Storage member for defective products
192: Good product storage member
200: Filming Department
300: control unit
20: parts
30: defective product
40: good quality

Claims (4)

A transfer unit that transfers parts;
a photographing unit that photographs the component; and
A control unit that analyzes part image data generated by being photographed by the photographing unit and determines whether the part is defective,
The control unit is characterized in that it analyzes the part image data using a pre-learned part analysis algorithm.
Part identification device. According to paragraph 1,
The part analysis algorithm is a deep neural network previously learned using reference data, the reference data includes normal image data generated by photographing a normal part, and the control unit determines that the part image data is combined with the normal image data. Comparing whether they match and controlling them to classify them as defective if they do not match
Part identification device. According to paragraph 2,
The transfer unit
A first frame member having a constant length;
a second frame member spaced apart from the first frame member at a predetermined interval;
a third frame member supported by the first and second frame members;
a transfer roller member coupled between the first frame and the second frame and rotating in one direction;
a transfer belt member supported by the transfer roller member and transporting the component in one direction;
A detection sensor member that detects parts on the transport belt member;
a positioning member that adjusts the position of the component so that the component is located in the center of the transport belt member; and
It includes a direction changing member coupled to the third frame member and changing the direction of movement of the component moving on the transport belt member,
The parts identification device is
a defective product storage member disposed below the transport belt member and storing defective products that fall from the transport belt member; and
It includes a good product storage member disposed below the transport belt member and storing good products dropped from the transport belt member,
When the detection sensor member detects the part, the control unit stops the operation of the transport belt member for a certain period of time and controls the photographing unit to generate and analyze part image data. If the part is determined to be defective, the control unit controls the photographing unit to generate and analyze the part image data. By adjusting the angle of the direction changing member, the component is controlled to move along the direction changing member and be stored in the defective product storage member.
Part identification device. According to paragraph 3,
The position adjustment member is
a first adjustment plate coupled to the first frame and covering a portion of the transport belt member; and
It includes a second adjustment plate coupled to the second frame and covering a portion of the transport belt member,
The first adjusting plate has a first diagonal portion that helps the component move to the center of the transport belt member along the circumference of the first adjusting plate, and the second adjusting plate has a first diagonal portion that helps the component move along the circumference of the second adjusting plate. It has a second diagonal portion that helps move to the center of the transport belt member,
The direction changing member is
a transfer board having a flat plate shape of a certain area and being perpendicular to the transfer belt member;
A connector coupled to one side of the transfer board; and
Characterized in that it includes a regulator that rotates the connector at a certain angle.
Part identification device.

Images