KR102360140B1 - Vision inspection device for vehicle parts - Google Patents

Abstract

The present invention relates to a vision inspection device for parts inspection. A technical problem to be solved is to provide the vision inspection device for parts inspection, which performs vision inspection without forming a darkroom atmosphere during vision inspection of vehicle parts, and minimizes the effect of externally applied light. The vision inspection device for parts inspection according to the present invention comprises: a camera part for capturing an image to secure the image; a case part formed in a box shape with both ends open, accommodating the camera part therein, and having an opening area formed on one side facing a photographing direction of the camera part; a light source part disposed in the opening area of the case part, having a photographing hole formed in the photographing direction of the camera part, and emitting a light source toward the center of the photographing hole; and a light source adhesion part installed between the case part and the light source part, and moving the light source part a certain distance when receiving a forward signal.

Description

Vision inspection device for parts inspection

The present invention relates to a vision inspection apparatus for inspection of parts, and more particularly, to a vision inspection apparatus for inspection of parts that inspects a vehicle part to be inspected by vision and automatically determines whether a processing type is pass or fail.

A hole is formed for bonding between parts among vehicle parts, and in this case, the hole is usually formed by cutting.

As such, the hole machined in the vehicle part is inspected for the size of the hole, the position of the hole, and the verticality of the hole through a vision inspection.

Here, looking at the conventional literature on the vision inspection device, Republic of Korea Utility Model Registration No. 20-0347781 (announcement on April 14, 2004) discloses an automobile parts inspection apparatus using a vision system for inspecting automobile parts by vision.

An automobile parts inspection apparatus using such a vision system fixes automobile parts in an inspection room to block light from the outside, and takes an image in a state in which a light source is supplied by a lighting installed inside.

As described above, the conventional vision system uses a separate light source to capture an image with a constant brightness by using a separate light source in a state in which the camera is accommodated in a darkroom-type inspection room in order to minimize the effect of light coming in from the outside to inspect vehicle parts. Securing the image.

However, the vision inspection method of accommodating such vehicle parts in a darkroom-type inspection room has a problem in that the parts inspection time is dramatically increased because it is necessary to perform a task of accommodating the parts in the darkroom and then taking them out again.

In particular, as part of an effort to shorten the inspection time to shorten the manufacturing time, when multiple inspection processes are performed together during the inspection of vehicle parts, other inspections are performed due to the condition that a dark room as described above must be formed. It also causes problems that the process cannot proceed.

Therefore, the conventional vision inspection system performs vision inspection without forming a darkroom atmosphere during vision inspection of vehicle parts, but requires a technical solution to minimize the effect of externally applied light.

Republic of Korea Registered Utility Model No. 20-0347781 (Announcement on April 14, 2004)

The technical problem of the present invention for solving the above problems is to perform vision inspection without forming a darkroom atmosphere during vision inspection of vehicle parts, but to form a darkroom in the vision inspection device itself so that the effect of light applied from the outside is reduced It is to provide a vision inspection device for parts inspection that can be minimized.

A vision inspection apparatus for inspection of parts of the present invention for achieving the above technical problem includes: a camera unit for capturing an image to secure an image; a case part formed in a box shape with both ends open, accommodating the camera part inside, and having an opening area formed on one side facing the camera part in a shooting direction; a light source unit disposed in the opening area of the case unit, having a photographing hole formed in a photographing direction of the camera unit, and irradiating a light source toward the center of the photographing hole; and a light source adhesion unit installed between the case unit and the light source unit and configured to move the light source unit by a predetermined distance when receiving a forward signal; includes

In this case, in the vision inspection device for parts inspection, the light source part is formed in a circular arrangement with respect to the central axis of the photographing hole, and in the circular arrangement state, the light source is irradiated toward the center of the photographing hole, but the irradiation direction of the light source is the inspection target inclined to face.

In addition, the vision inspection device for parts inspection is coupled to the case portion, the optical displacement sensor for generating distance information for measuring a distance between the case portion and the light source unit; Interlocking with the displacement sensor for optical measurement, generating a forward signal so that the light source contact unit moves a predetermined distance, and continuously receiving the distance information in conjunction with the displacement sensor for optical measurement, the distance information is within a preset range It continuously determines whether the inspection effective distance is within the preset distance range, generates inspection valid information if it is within the preset distance range, outputs inspection error information if it is out of the preset distance range, and displays inspection completion information within the preset distance range. a light source position control unit for generating a reverse signal when receiving an input and returning the light source contact unit to an initial position; And, in conjunction with the camera unit and the light source position control unit, in a state in which the inspection valid information is received from the light source position control unit, the digital image information measured by the camera unit in conjunction with the camera unit matches a preset image image a vision inspection image analysis unit that performs inspection to determine whether the inspection passes or fails, and outputs inspection completion information to the light source position control unit upon completion of the inspection; further includes

Here, the light source adhesion portion is a first upper guide coupled to any one of the vertical sides of the case portion; a first lower guide coupled to a side surface of the case portion to which the first upper guide is coupled, and spaced apart from the first upper guide; a first rail disposed between the first upper guide and the first lower guide; a first upper bearing inserted and disposed between the first upper guide and the first rail in abutting state; a first lower bearing inserted and disposed in abutting state between the first lower guide and the first rail; a second upper guide coupled to a side opposite to a side to which the first upper guide is coupled among vertical side surfaces of the case part; a second lower guide coupled to a side surface of the case portion to which the second upper guide is coupled, and spaced apart from the second upper guide; a second rail disposed between the second upper guide and the second lower guide; a second upper bearing inserted and disposed between the second upper guide and the second rail in abutting state; a second lower bearing inserted and disposed in abutting state between the second lower guide and the second rail; a first support coupled to the first rail and moving in the same direction as the movement direction of the first rail; a second support coupled to the second rail and moving in the same direction as the movement direction of the second rail; a light source coupling part coupled to the first support and the second support, disposed to cover the opening area of the case part, the light source part coupled thereto, and a communication hole communicating with the photographing hole of the light source part; And, a cylinder body is coupled to the lower portion of the case portion, the cylinder rod is coupled to the light source coupling portion; is formed including

In addition, the vision inspection device for inspecting parts is formed in a cylindrical cylindrical shape, is mounted near the lens of the camera unit, the camera unit secures the image through the hollow inside, and is formed with a length greater than the length of the camera unit Cylindrical body part; further includes

In addition, the case portion has a position adjustment hole formed on one side in the camera portion in the photographing direction, and the vision inspection device for parts inspection is screwed with the camera portion through the position adjustment hole to couple the camera portion to the case portion Camera fixing screw bolt; Further comprising, in this case, the screw bolt for fixing the camera is adjusted within the range in which the position adjustment hole is formed when combined with the camera unit so that the fixing position of the camera unit is changed to be fixed, thereby increasing the imaging distance of the camera unit formed to be adjustable.

The present invention performs vision inspection without forming a darkroom atmosphere during vision inspection of vehicle parts, but by forming a darkroom in the vision inspection device itself to minimize the effect of light applied from the outside, the constraint conditions of vision inspection are reduced from the prior art. It has the effect of dramatically improving the vision inspection process compared to the previous one by making it smaller.

1 is a perspective view of a state in which a vision inspection device for inspection of parts takes an inspection object;
Figure 2 is a plan view of the vision inspection device for parts inspection shown in Figure 1;
Fig. 3 is a partial cross-sectional view taken along line AA shown in Fig. 2;
4 is a partial cross-sectional view taken along line BB shown in FIG.
5 is a perspective view of a state in which the upper case is separated from the middle of the case part of the vision inspection device for parts inspection shown in FIG. 1;
6 is a perspective view of a state in which the light source adhesion unit shown in FIG. 5 is advanced.
7 is a partial cross-sectional view of a state in which the light source adhesion unit shown in FIG. 3 is advanced.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the accompanying drawings, and in this case, when a part "includes" a certain component throughout the specification, this is unless otherwise specifically stated. It is not intended to control other components, but is considered to mean that other components may be further included. In addition, terms such as "...unit" described in the specification mean a unit that processes at least one function or operation when describing electronic hardware or electronic software, and when describing a mechanical device, one part, function, shall be taken to mean a use, a point or a driving element. In the following, the same or similar components will be described using the same reference numerals, and overlapping descriptions of the same components will be omitted.

1 is a perspective view of a state in which a vision inspection apparatus for inspecting parts captures an inspection object; FIG. 2 is a plan view of the vision inspection apparatus for parts inspection shown in FIG. 1 . 3 is a partial cross-sectional view taken along the line A-A shown in FIG. 2 . 4 is a partial cross-sectional view taken along the line B-B shown in FIG. 2 . FIG. 5 is a perspective view illustrating a state in which an upper case is removed from the middle of the case part of the vision inspection apparatus for parts inspection shown in FIG. 1 . 6 is a perspective view of a state in which the light source adhesion unit shown in FIG. 5 is advanced. 7 is a partial cross-sectional view of a state in which the light source adhesion unit shown in FIG. 3 is advanced.

Here, Figs. 5 to 7 show the upper case 22 in a state in which the upper case 22 is separated in order to confirm in detail the components disposed inside the case unit 20 in the drawings.

1 to 7 , the vision inspection apparatus for parts inspection according to an embodiment of the present invention includes a camera unit 10 , a case unit 20 , a light source unit 30 , and a light source adhesion unit 40 . includes

The camera unit 10 is a device for securing an image image by capturing an image. The image sensor unit 11 converts an image signal into an analog image signal, and the analog image signal generated by the image sensor unit 11 is converted into a digital signal. It is formed to include an image signal processing unit 12 for converting and signal processing, and a communication unit 13 for transmitting the image signal information converted into a digital signal by the image signal processing unit 12 to a network.

The case unit 20 is formed in a box shape with both ends open, accommodates the camera unit 10 inside, and an opening area is formed on one side facing the photographing direction of the camera unit 10 . In the present embodiment, the case portion 20 is formed in a box body shape with both ends open, and the upper case 22 is detachably coupled to the lower case 21 and the upper opening region of the lower case 21 having the upper end open. ), including In addition, in the lower case 21, a plurality of screw holes are formed in various parts of the body in order to be coupled to the light source adhesion part 40 to be described later. In this embodiment, the case portion 20 is exemplified in a state mounted on the fixing jig (2a).

The light source unit 30 is disposed in the opening area of the case unit 20 , the photographing hole 30a is formed in the photographing direction of the camera unit 10 , and the light source is irradiated toward the center of the photographing hole 30a.

In the case of this embodiment, the light source unit 30 is formed to include an outer cylindrical body 31 , an LED unit 32 , and a photographing direction cover 33 .

The outer cylinder 31 is formed in a circular cylindrical shape in which a photographing hole 30a is formed based on a central axis. Here, the outer cylinder 31 is further formed with a hole into which an electric wire 32a electrically connected to the LED part 32 is inserted.

The LED unit 32 is arranged so that a plurality of LEDs are coupled to the inner periphery of the outer cylinder 31 in a circular arrangement, and the irradiation direction of the LED unit 32 is directed toward the central axis of the outer cylinder 31 . In this case, the LED unit 32 irradiates the light source so that the irradiation direction is directed toward the center side of the photographing hole 30a, which is the central axis of the outer cylinder 31, and the irradiation direction of the light source is constant so that the inspection object 1 faces. placed at an angle. Therefore, the LED unit 32 irradiates light so that only the photographing area of the inspection object 1 is bright while securing the photographing area by the photographing hole 30a.

The photographing direction cover 33 is formed in a plate shape in which a cross-shaped grid shape is formed, and is coupled to one surface of the outer cylindrical body 31 . In this case, the photographing direction cover 33 is arranged so that the central axis of the grid shape coincides with the central axis of the photographing hole 30a. In such a photographing direction cover 33, the central axis of the grid shape provides a reference for the central axis of the photographing hole 30a. At this time, the reference for the central axis is the inspection target 1 during vision inspection It can be determined by reference to the center of the processing hole (1a).

The light source adhesion unit 40 is installed between the case unit 20 and the light source unit 30 , and when a forward signal is received, the light source unit 30 is moved by a predetermined distance.

In the present embodiment, the light source adhesion part 40 includes a first upper guide 41a, a first lower guide 41b, a first rail 41c, a first upper bearing 41d, and a first lower bearing 41e. , second upper guide (42a), second lower guide (42b), second rail (42c), second upper bearing (42d), second lower bearing (42e), first support (43), second support 44 , a light source coupling unit 45 , and a cylinder unit 46 .

The first upper guide 41a is formed in a bar shape, and is bolted to any one of the vertical sides of the case portion 20 . In this case, the first upper guide 41a has a first upper concave groove 41a1 into which the first upper bearing 41d is inserted in the longitudinal direction near the center of the lower surface is formed.

The first lower guide 41b is formed in a bar shape, is bolted to the side surface of the case portion 20 to which the first upper guide 41a is coupled, and is spaced apart from the first upper guide 41a. In this case, the first lower guide 41b is formed with a first lower concave groove 41b1 into which the first lower bearing 41e is inserted in the longitudinal direction near the center of the lower surface.

The first rail 41c is formed in a bar shape, and is disposed between the first upper guide 41a and the first lower guide 41b. In this case, the first rail 41c has a first upper guide groove 41c1 formed in the central longitudinal direction of the upper surface, a first lower guide groove 41c2 is formed in the longitudinal direction of the lower surface, and the first upper part The first upper bearing 41d is inserted into the guide groove 41c1, and the first lower bearing 41e is inserted into the first lower guide groove 41c2. The first rail 41c is supported by the first upper guide 41a and the first lower guide 41b so as not to sag up and down and moves in the axial direction while the first upper bearing 41d and the first lower bearing 41e are moved in the axial direction. ), the friction force is not increased.

The first upper bearing 41d is inserted and disposed in abutting state between the first upper guide 41a and the first rail 41c. Here, the first upper bearing 41d may be formed as a sliding bearing as shown in the drawing. In this case, the first upper bearing 41d is inserted between the first upper concave groove 41a1 of the first upper guide 41a and the first upper guide groove 41c1 of the first rail 41c, and the first When the rail 41c moves in the longitudinal direction, it is constrained by the first upper concave groove 41a1 and the first upper guide groove 41c1 so as not to be separated in the lateral direction in the moving direction of the first rail 41c in the longitudinal direction. The sliding bearing reduces the frictional force of the first rail 41c.

The first lower bearing 41e is inserted and disposed in abutting state between the first lower guide 41b and the first rail 41c. Here, the first lower bearing 41e may be formed as a sliding bearing as shown in the drawings. In this case, the first lower bearing 41e is inserted between the first lower concave groove 41b1 of the first upper guide 41a and the first lower guide groove 41c2 of the first rail 41c, and the first When the rail 41c moves in the longitudinal direction, it is constrained by the first lower concave groove 41b1 and the first lower guide groove 41c2 so as not to be separated in the lateral direction in the moving direction of the first rail 41c in the longitudinal direction. The sliding bearing reduces the frictional force of the first rail 41c.

The second upper guide 42a is formed in a bar shape, and is bolted to a side opposite to the side to which the first upper guide 41a is coupled among the vertical side surfaces of the case part 20 . In this case, the second upper guide 42a has a second upper concave groove 42a1 into which the second upper bearing 42d is inserted in the longitudinal direction near the center of the lower surface is formed.

The second lower guide 42b is formed in a bar shape, is bolted to the side surface of the case portion 20 to which the second upper guide 42a is coupled, and is spaced apart from the second upper guide 42a. In this case, the second lower guide 42b is formed with a second lower concave groove 42b1 in which the second lower bearing 42e is inserted in the longitudinal direction near the center of the lower surface.

The second rail 42c is formed in a bar shape, and is disposed between the second upper guide 42a and the second lower guide 42b. In this case, the second rail 42c has a second upper guide groove 42c1 formed in the central longitudinal direction of the upper surface, a second lower guide groove 42c1 is formed in the longitudinal direction of the lower surface, and the second upper A second upper bearing 42d is inserted into the guide groove 42c1, and a second lower bearing 42e is inserted into the second lower guide groove 42c1. The second rail 42c is supported by the second upper guide 42a and the second lower guide 42b so as not to sag up and down and moves in the axial direction while moving in the axial direction. The second upper bearing 42d and the second lower bearing 42e ), the friction force is not increased.

The second upper bearing 42d is inserted and disposed in abutting state between the second upper guide 42a and the second rail 42c. Here, the second upper bearing 42d may be formed as a sliding bearing as shown in the drawing. In this case, the second upper bearing 42d is inserted between the second upper concave groove 42a1 of the second upper guide 42a and the second upper guide groove 42c1 of the second rail 42c, and the second When the rail 42c moves in the longitudinal direction, it is constrained by the second upper concave groove 42a1 and the second upper guide groove 42c1 so as not to be separated in the lateral direction in the moving direction of the second rail 42c in the longitudinal direction. The sliding bearing reduces the frictional force of the second rail 42c.

The second lower bearing 42e is inserted and disposed in abutting state between the second lower guide 42b and the second rail 42c. Here, the second lower bearing 42e may be formed as a sliding bearing as shown in the drawings. In this case, the second lower bearing 42e is inserted between the second lower concave groove 42b1 of the second upper guide 42a and the second lower guide groove 42c1 of the second rail 42c, and the second When the rail 42c moves in the longitudinal direction, it is constrained by the second lower concave groove 42b1 and the second lower guide groove 42c1 so as not to be separated in the lateral direction in the moving direction of the second rail 42c in the longitudinal direction. The sliding bearing reduces the frictional force of the second rail 42c.

The first support 43 is formed in a bar shape and is coupled to the first rail 41c by a bolt while in contact with the first rail 41c. Such a first support 43 moves in the same direction as the movement direction of the first rail 41c when the first rail 41c moves.

The second support 44 is formed in a bar shape and is coupled to the second rail 42c by a bolt while in contact with the second rail 42c. When the second rail 42c moves, the second support 44 moves in the same direction as the movement direction of the second rail 42c.

The first support 43 and the second support 44 are the first rail (41c) and the second rail (42c) of the light source unit 30 coupled to the light source coupling unit 45 when the movement of the first rail ( 41c) and serves to move as much as the moving distance of the second rail 42c.

The light source coupling part 45 is formed in a flat plate shape and is coupled to one end of the first support 43 and one end of the second support 44 . In addition, the light source coupling part 45 is disposed to cover the opening area of the case part 20 . In addition, the light source coupling unit 45 is coupled to the light source unit 30 on a surface opposite to the surface covering the opening region of the case unit 20 , and in this case, the light source coupling unit 45 is a hole for photographing the light source unit 30 . A communication hole 45a communicating with the 30a is formed to secure a photographing area of the camera unit 10 . The light source coupling unit 45 serves to provide an area to which the light source unit 30 is to be coupled in a state in which the photographing area of the camera unit 10 is secured.

The cylinder part 46 is formed of an actuator performing a linear motion, such as a pneumatic cylinder, the cylinder body 46a is coupled to the lower part of the case part 20, and the end of the cylinder rod 46b is a light source coupling part 45. is coupled to As for the cylinder part 46, forward and backward driving are controlled by the light source position control unit 60, and when a forward signal is applied, pneumatic pressure is supplied to the forward port to advance the cylinder rod 46b, thereby moving the light source coupling unit 45. The light source coupling part 45 is returned to the initial position by moving the cylinder rod 46b backward by supplying pneumatic pressure to the reverse port at the time of the reverse signal and moving forward a certain distance. Here, the cylinder part 46 is organically connected with pneumatic parts such as an air compressor (not shown), a pneumatic tank (not shown), a solenoid valve for port conversion (not shown), and a pneumatic pipe (not shown) It is supplied in this controlled state, and the general peripheral technology for such a pneumatic pressure will be omitted so as not to obscure the gist of the present invention.

In addition, the vision inspection apparatus for parts inspection according to an embodiment of the present invention further includes a displacement sensor unit 50 , a light source position control unit 60 , and a vision inspection image analysis unit 70 .

The displacement sensor unit 50 is coupled to the case unit 20 while being inserted, and generates distance information for measuring the distance between the case unit 20 and the light source unit 30 . In this embodiment, the displacement sensor unit 50 may be configured as a displacement sensor using a laser.

The light source position control unit 60 controls the driving of the cylinder unit 46 while determining whether it is within a normal inspection range according to the distance information of the displacement sensor unit 50 .

Accordingly, the light source position control unit 60 interlocks with the optical measurement displacement sensor unit 50 , generates a forward signal so that the light source adhesion unit 40 moves a predetermined distance, and interlocks with the optical measurement displacement sensor unit 50 . In this way, the distance information is continuously input and the effective distance of the inspection is continuously determined as to whether the distance information is within a preset range. In this case, the light source position control unit 60 generates inspection valid information when the light source adhesion unit 40 is within a preset distance range, and outputs inspection error information when the light source adhesion unit 40 is out of the preset distance range By doing so, it is automatically determined whether the position of the light source unit 30 coupled to the light source adhesion unit 40 is at an effective position for inspection. In addition, the light source position control unit 60 works in conjunction with the vision inspection image analysis unit 70 to generate a reverse signal when receiving inspection completion information within a preset distance range from the vision inspection image analysis unit 70 to close the light source. The unit 40 is returned to its initial position.

The vision inspection image analysis unit 70 interworks with the camera unit 10 and the light source position control unit 60 , and interlocks with the camera unit 10 in a state in which inspection valid information is received from the light source position control unit 60 , and the camera unit It is inspected whether the digital image information generated in (10) matches the preset image image to determine whether the inspection passed or failed, and when inspection is completed, inspection completion information is output to the light source position control unit 60 .

In addition, the vision inspection apparatus for parts inspection according to an embodiment of the present invention further includes a cylindrical cylindrical body portion 80 and a screw bolt 90 for fixing the camera.

The cylindrical body part 80 is formed in a cylindrical cylindrical shape, is mounted near the lens of the camera part 10, and the camera part 10 secures an image through the hollow part inside, and is longer than the length of the camera part 10. formed in a larger length. The cylindrical cylindrical body portion 80 serves as a shield to prevent other light sources from flowing into the lens of the camera unit 10 while allowing only the light sources generated from the light source unit 30 to flow in.

The screw bolt 90 for fixing the camera is screwed with the camera unit 10 through the positioning hole 10a1 to couple the camera unit 10 to the case unit 20 . Here, the position adjustment hole (10a1) is formed on one side of the case unit 20, and is formed in a straight line toward the photographing direction of the camera unit (10).

The screw bolt 90 for fixing the camera is adjusted within the range where the position adjustment hole 10a1 is formed when it is coupled with the camera unit 10 so that the fixing position of the camera unit 10 is changed to be fixed, so that the camera unit ( It is formed so that the imaging distance of 10) can be adjusted. Therefore, when the field worker needs to fine-tune the focus or the image distance of the camera unit 10, it is possible to easily correct the focus immediately in the field.

Hereinafter, a method of inspecting the inspection object 1 using the vision inspection apparatus for inspecting parts according to an embodiment of the present invention as described above will be described.

First, the operator fixes the case part 20 into which the camera part 10 is inserted to the periphery of the inspection object 1 . In this case, as shown in the drawing, the inspection object 1 is an automobile part, and in this case, the inspection object 1 is a 6-axis robot (not shown) or a transfer device (not shown) of the inspection object 1 Vision inspection will be carried out in a state fixed in a specific position.

In the case of this embodiment, the camera unit 10 photographed the processing hole 1a formed in the automobile part, which is the inspection object 1 , with the camera unit 10 , and the size error of the processing hole 1a formed in the inspection object 1 . , the central axis position error, and the central axis eccentricity error are inspected by vision.

To this end, the light source position control unit 60 detects the case where the inspection object 1 is located on the camera unit 10 by an object detection sensor (not shown) located in the vicinity of the inspection object 1 to generate a forward signal. , the port position of the cylinder is changed by the forward signal to advance the cylinder rod 46b of the cylinder part 46 .

In this case, the light source position control unit 60 interlocks with the optical displacement sensor unit 50 to continuously receive distance information to continuously determine the inspection effective distance as to whether the distance information is within a preset range, and the light source When the close contact unit 40 is within a preset distance range, the inspection valid information is generated, and when the light source adhesion unit 40 is out of the preset distance range, inspection error information is output, thereby coupled to the light source adhesion unit 40. It is automatically determined whether the position of the light source unit 30 is at a position where the inspection is effective. At this time, the operator checks the error information when the inspection error information is output to check whether the camera unit 10 is faulty, or checks the position of the camera unit 10 or the position of the inspection object 1 and adjusts it.

On the other hand, the cylinder rod 46b of the cylinder part 46 in the forward state pushes the light source coupling part 45 in the longitudinal direction of the case part 20 . In this case, the light source coupling part 45 is coupled to the first support 43 and the second support 44 coupled to the first rail 41c and the second rail 42c to move in the lateral direction and the vertical direction. It is driven forward in a restrained state.

At this time, the photographing direction cover 33 of the light source unit 30 coupled to the light source coupling unit 45 is in close contact with the processing hole 1a of the inspection object 1 , and the LED unit 32 of the light source unit 30 is inspected. The processing hole 1a of the object 1 is formed, and light is irradiated only to the photographing area.

Therefore, in the processing hole 1a of the inspection object 1, only the light source of the LED part 32 is processed while blocking the influence of light with the outer cylinder 31 so as not to be affected by sunlight or simple lighting inside the factory. By irradiating to the (1a) side, the influence of the camera unit 10 by external light is minimized.

Next, the camera unit 10 receives an image through the photographing hole 30a of the light source unit 30 , the communication hole 45a of the light source coupling unit 45 and the inner passage of the cylindrical cylindrical body 80 , and receives analog image information After generating , the generated analog image is signal-processed to be converted into digital image information, and the converted digital image information is transmitted to the vision inspection image analysis unit 70 .

Next, the vision inspection image analysis unit 70 examines whether the digital image information measured by the camera unit 10 matches the preset image image to determine whether the inspection passes or fails, and upon completion of the inspection, the light source position control unit 60 Inspection completion information is output to

Next, the light source position control unit 60 receiving the inspection completion information generates a reverse signal. In this case, the reverse signal switches the position port of the cylinder unit 46 to drive the cylinder unit 46, so that the light source closes. The unit 40 is returned to its initial position.

In this way, when the vision inspection apparatus for inspecting parts according to an embodiment of the present invention inspects the inspection object 1 in a vision method, the light source unit 30 is not formed in a darkroom atmosphere as in the prior art, and the inspection object 1 is ) to minimize the influence of external light on the periphery of the inspection object (1) by irradiating light to the inspection object (1) in an ultra-proximity state to minimize the influence of external light. inspection will proceed.

Therefore, the vision inspection device for parts inspection according to an embodiment of the present invention performs vision inspection without forming a darkroom atmosphere during vision inspection of parts for a vehicle, which is the inspection target (1), but forms a darkroom in the vision inspection device itself Thus, by minimizing the influence of light applied from the outside, the constraint conditions of the vision inspection are less than that of the prior art, so that the process of the vision inspection can be dramatically improved than before.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

1: inspection target 10: camera unit
10a1: positioning hole 20: case part
30: light source unit 30a: hole for shooting
40: light source adhesion part 41a: first upper guide
41b: first lower guide 41c: first rail
41d: first upper bearing 41e: first lower bearing
42a: second upper guide 42b: second lower guide
42c: second rail 42d: second upper bearing
42e: second lower bearing 43: first support
44: second support 45: light source coupling part
45a: communication hole 46: cylinder part
50: displacement sensor unit for optical measurement 60: light source position control unit
70: vision inspection image analysis unit 80: cylindrical body part
90: screw bolt for fixing the camera

Claims (6)

a camera unit 10 for capturing an image to secure an image image;
a case portion 20 formed in a box shape with both ends open, accommodating the camera unit 10 inside, and having an opening area formed on one side facing the photographing direction of the camera unit 10;
a light source unit (30) disposed in the opening area of the case unit (20), having a photographing hole (30a) formed in the photographing direction of the camera unit (10), and irradiating a light source toward the center of the photographing hole (30a);
a light source adhesion unit 40 installed between the case unit 20 and the light source unit 30 and configured to move the light source unit 30 by a predetermined distance when receiving a forward signal;
The light source unit 30 is formed in a circular arrangement based on the central axis of the photographing hole 30a, and irradiates a light source toward the center of the photographing hole 30a in a circular arrangement state, but the irradiation direction of the light source is the inspection target ( 1) to be inclined to face;
a displacement sensor unit 50 for optical measurement coupled to the case unit 20 and generating distance information for measuring a distance between the case unit 20 and the light source unit 30;
It works with the displacement sensor unit 50 for optical measurement, generates a forward signal so that the light source contact unit 40 moves by a predetermined distance, and works with the displacement sensor unit 50 for optical measurement to continuously information on the distance. to continuously determine the inspection effective distance as to whether the distance information is within a preset range, generate inspection valid information when it is within a preset distance range, and output inspection error information when out of the preset distance range, a light source position control unit 60 for generating a backward signal to return the light source contact unit 40 to an initial position when inspection completion information is received within a preset distance range;
Interlocking with the camera unit 10 and the light source position control unit 60, in a state in which the inspection valid information is received from the light source position control unit 60, in the camera unit 10 by interworking with the camera unit 10 A vision inspection image analysis unit 70 that checks whether the measured digital image information matches a preset image image, determines whether the inspection passes or fails, and outputs inspection completion information to the light source position control unit 60 when the inspection is completed; and,
The light source adhesion part 40 includes a first upper guide 41a coupled to any one of the vertical sides of the case part 20; a first lower guide 41b coupled to a side surface of the case portion 20 to which the first upper guide 41a is coupled, and spaced apart from the first upper guide 41a; a first rail (41c) disposed between the first upper guide (41a) and the first lower guide (41b); a first upper bearing (41d) inserted and disposed in abutting state between the first upper guide (41a) and the first rail (41c); a first lower bearing (41e) inserted and disposed in abutting state between the first lower guide (41b) and the first rail (41c); a second upper guide (42a) coupled to a side opposite to the side to which the first upper guide (41a) is coupled among the vertical side surfaces of the case part (20); a second lower guide 42b coupled to a side surface of the case portion 20 to which the second upper guide 42a is coupled, and spaced apart from the second upper guide 42a; a second rail (42c) disposed between the second upper guide (42a) and the second lower guide (42b); a second upper bearing (42d) inserted and disposed in abutting state between the second upper guide (42a) and the second rail (42c); a second lower bearing (42e) inserted and disposed in abutting state between the second lower guide (42b) and the second rail (42c); a first support (43) coupled to the first rail (41c) and moving in the same direction as the movement direction of the first rail (41c); a second support 44 coupled to the second rail 42c and moving in the same direction as the movement direction of the second rail 42c; It is coupled to the first support 43 and the second support 44 , is disposed to cover the opening area of the case part 20 , and the light source part 30 is coupled thereto; a light source coupling part 45 having a communication hole 45a communicating with the 30a; And, the cylinder body (46a) is coupled to the lower portion of the case portion (20), the cylinder rod (46b) is coupled to the light source coupling portion (45) the cylinder portion (46); A vision inspection device for parts inspection, characterized in that it is formed to include.
delete delete delete The method of claim 1,
It is formed in a cylindrical cylindrical shape, is mounted near the lens of the camera unit 10, and the camera unit 10 secures an image through the hollow part inside, and has a length greater than the length of the camera unit 10. Cylindrical cylindrical body portion 80 is formed; Vision inspection device for parts inspection further comprising a.
6. The method of claim 5,
The case unit 20 has a position adjustment hole 10a1 formed on one side in the photographing direction of the camera unit 10,
a camera fixing screw bolt 90 for screwing the camera unit 10 through the positioning hole 10a1 to couple the camera unit 10 to the case unit 20; further comprising,
The screw bolt 90 for fixing the camera is adjusted within the range in which the position adjustment hole 10a1 is formed when it is coupled with the camera unit 10 so that the fixing position of the camera unit 10 is changed to be fixed. A vision inspection device for parts inspection, characterized in that it is formed so that the imaging distance of the camera unit (10) can be adjusted.

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