KR20230140076A - Inspection apparatus of needle patch and inspection method of needle patch using the same - Google Patents

Abstract

The present invention relates to a needle patch inspection device capable of detecting defects at the top, bottom, and height of a needle at the same time, and a needle patch inspection method using the same, which includes a pallet that can run along a rail and on which a needle patch is placed on the upper surface. , illuminating the upper surface of the pallet, photographing the lighting unit arranged so that the direction of light travels at a predetermined inclination angle with the needle patch and the upper surface of the needle patch, the observation direction intersects the traveling direction of the light, and the needle patch Disclosed is a needle patch inspection device including a patch and a camera unit forming the predetermined inclination angle, and a needle patch inspection method using the same.

Description

Needle patch inspection apparatus and needle patch inspection method using the same {Inspection apparatus of needle patch and inspection method of needle patch using the same}

The present invention relates to a needle patch inspection device and a needle patch inspection method using the same. More specifically, it relates to a needle patch inspection device that can simultaneously detect top, bottom, and height defects of a needle and a needle patch inspection method using the same. .

A needle patch refers to a bandage in which a fine-sized needle with a dry drug applied to one side is formed and can be attached to the skin. When a needle patch is attached to the skin, the dry drug applied to the needle mixes with moisture in the skin and can enter the body. Needle patches are used in a variety of industries, including medical injections, mask packs, botox, and cosmetics.

In general, the size of the needle formed in the needle patch is in micro (10 ^-6 ) meters, so it is difficult to visually check whether the needle is defective. Therefore, a separate device is required to inspect whether the needle patch is defective.

Needle defects can occur at the top, bottom, and height. Conventional needle patch inspection devices require multiple imaging processes for one needle, or their accuracy may be insufficient.

Therefore, the development of a needle patch inspection device that can simultaneously detect defects on the top, bottom, and height of the needle with a single shot and improve accuracy can be considered.

Korean Patent Publication No. 10-1497684 discloses a screening and inspection device for defective injection needles. Specifically, we disclose a screening device that detects defective injection needles based on data showing the shape of the tip of the needle in the horizontal and vertical directions.

However, this type of screening device requires multiple cameras to check whether one injection needle is defective. Accordingly, there is a possibility that the volume of the screening device and the inspection process may be excessively increased.

Korean Patent Publication No. 10-1109626 discloses a needle inspection device and method. Specifically, a needle inspection device and method is disclosed that photographs the tip of a needle and compares the tip pattern and size of the needle with a standard pattern to determine whether there is an abnormality in the needle.

However, in this type of needle inspection device and method, since the needle is photographed in a vertical direction, it is difficult to inspect whether there is a defect related to the height of the needle. Therefore, the accuracy of needle inspection may be insufficient.

Korean Patent Publication No. 10-1497684 (2015.03.23.) Korean Patent Publication No. 10-1109626 (2021.01.31.)

One object of the present invention is to provide a needle patch inspection device with improved accuracy in inspecting needle defects and a needle patch inspection method using the same.

Another object of the present invention is to provide a needle patch inspection device with a simpler structure and inspection process and a needle patch inspection method using the same.

Another object of the present invention is to provide a needle patch inspection device with a shorter inspection speed and a needle patch inspection method using the same.

In order to achieve the above object, the present invention includes a frame including a rail and a moving plate that can travel along the rail; a pallet formed in a plate shape, placed on the moving plate, capable of traveling together with the moving plate, and having a needle patch disposed on the upper surface; a lighting unit that illuminates the upper surface of the pallet and is arranged so that the direction of light travels at a predetermined inclination angle with the needle patch; and a camera unit that photographs the upper surface of the needle patch, but whose observation direction intersects the direction of light travel and forms a predetermined inclination angle with the needle patch.

Additionally, it may include a servomotor unit that adjusts the positions of the lighting unit and the camera unit while maintaining the relative positions between the lighting unit and the camera unit.

In addition, the servomotor unit includes an x-axis servomotor that adjusts the lateral positions of the lighting unit and the camera unit; a y-axis servomotor that adjusts the longitudinal positions of the lighting unit and the camera unit; And it may include a z-axis servomotor that adjusts the height of the lighting unit and the camera unit.

In addition, the lighting unit includes first lighting and second lighting that are spaced apart from each other, and the camera unit includes: a first camera whose observation direction intersects the direction of light travel of the first lighting; And a second camera disposed so that its observation direction intersects the direction of light of the second illumination, and its relative position with respect to the second illumination corresponds to the relative position of the first camera with respect to the first illumination. can do.

In addition, it includes a servo motor unit that adjusts the positions of the lighting unit and the camera unit while maintaining the relative position between the first lighting and the first camera and the relative position between the second lighting and the second camera, and the lighting unit and an x-axis servo motor that controls the lateral position of the camera unit; a y-axis servomotor that adjusts the longitudinal positions of the lighting unit and the camera unit; A first z-axis servomotor that adjusts the height of the first light and the first camera; And it may include a second z-axis servomotor that adjusts the height of the second lighting and the second camera.

In addition, a plurality of substrates formed in a plate shape smaller than the size of the pallet may be disposed on the upper surface of the pallet, and a plurality of needle patches may be disposed on each of the plurality of substrates.

Additionally, the camera unit can observe the top diameter, bottom diameter, and height of the needles formed in the needle patch.

Additionally, the traveling direction of the light of the lighting unit and the observation direction of the camera unit may be arranged to form an angle of 45° with the needle patch, respectively.

In addition, the present invention includes the steps of (a) moving the pallet to a preset inspection position along the rail; (b) the camera unit observing the shape of the needle formed in the needle patch; (c) outputting the needle observation results to the outside; and (d) moving the pallet along the rail to an end position.

Additionally, before step (b), step (b0) of adjusting the position of the camera unit and the luminous intensity and position of the lighting unit may be performed.

In addition, the step (b0) includes (b01) the step of returning the servomotor unit to the origin; and (b02) the step of adjusting the positions of the lighting unit and the camera unit by the servomotor unit.

In addition, the step (b02) includes (b03) the x-axis servomotor adjusting the lateral positions of the lighting unit and the camera unit; (b04) controlling the longitudinal positions of the lighting unit and the camera unit by the y-axis servomotor; and (b05) adjusting the height of the lighting unit and the camera unit by the z-axis servomotor.

In addition, step (b05) includes (b051) adjusting the height of the first light and the first camera by the first z-axis servomotor; And (b052) it may include the step of adjusting the height of the second light and the second camera by the second z-axis servomotor.

Additionally, step (b) may include the step (b1) of the camera unit observing the top diameter, bottom diameter, and height of the needle.

Additionally, step (c) may include step (c1) of outputting the shape of the needle and the position information of the lighting unit and the camera unit to the outside.

Additionally, if the shape of the needle is not output normally after step (c), step (c2) of inspecting the needle patch inspection device is performed, and the process can be repeated from step (b).

In addition, if CCD (Charge Coupled Device) imaging of the needle fails after step (c), step (c2) may include the step (c21) of inspecting the connection member of the camera unit. .

In addition, if an error occurs in the inspection position of the needle patch after step (c), step (c2) includes: (c22) returning the servomotor unit to the origin; and (c23) resetting the preset inspection position.

Among the various effects of the present invention, the effects that can be obtained through the above-described solution are as follows.

First, the needle patch inspection device includes a lighting unit and a camera unit. The lighting unit illuminates the upper surface of the needle patch, and is arranged so that the direction of light travels at a predetermined inclination angle with the needle patch. In addition, the camera unit captures the upper surface of the needle patch, and is arranged so that the observation direction intersects the light travel direction of the lighting unit and forms a predetermined inclination angle with the needle patch.

Therefore, the top diameter, bottom diameter, and height of the needle formed on the upper surface of the needle patch can all be observed at the same time. Accordingly, the accuracy of inspecting for defective needles can be further improved.

Additionally, the top, bottom, and height of the needle are all observed in one shot. Accordingly, inspection of the needle patch is possible with only one camera and one light.

Accordingly, the structure of the needle patch inspection device can be simplified, and the needle patch inspection step can be shortened. Accordingly, the volume of the needle patch inspection device can also be further reduced. Furthermore, the manufacturing and maintenance costs of the needle patch inspection device can be further reduced.

Additionally, a plurality of substrates are disposed on one pallet, and a plurality of needle patches are disposed on each substrate. At this time, a plurality of needle patches are photographed by a plurality of cameras arranged in parallel.

Accordingly, the inspection speed for all of the plurality of needle patches can be shortened.

1 is a perspective view showing a needle patch inspection device according to an embodiment of the present invention.
FIG. 2 is a side view showing the needle patch inspection device of FIG. 1.
FIG. 3 is a schematic diagram showing specific components of the needle patch inspection device of FIG. 1.
Figure 4 is a schematic diagram showing the observation process of the needle patch of the needle patch inspection device of Figure 1.
FIG. 5 is a perspective view showing a needle patch inspected by the needle patch inspection device of FIG. 1.
Figure 6 is a schematic diagram showing the results of imaging of the needle provided in the needle patch of Figure 5.
Figure 7 is a flowchart showing a needle patch inspection method according to an embodiment of the present invention.
FIG. 8 is a flowchart showing specific steps of S200 of FIG. 7.
FIG. 9 is a flowchart showing specific steps of S500 of FIG. 7.

Hereinafter, the needle patch inspection device 1 and the needle patch inspection method according to an embodiment of the present invention will be described in more detail with reference to the drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

In this specification, the same reference numbers are assigned to the same components even in different embodiments, and duplicate descriptions thereof are omitted.

The attached drawings are only intended to facilitate understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

The terms “upper”, “lower”, “left”, “right”, “anterior side” and “posterior side” used in the following description will be understood with reference to the coordinate system shown in FIG. 1.

Hereinafter, a needle patch inspection device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

The needle patch inspection device (1) checks whether the needle patch (2) is defective. Typically, the size of the needle patch 2 is formed in micro (10 ^-6 ) meters, so it is difficult to visually check whether it is defective. Accordingly, a separate needle patch inspection device (1) is required to check whether the needle patch (2) is defective.

The needle patch inspection device 1 observes the upper surface of the needle patch 2, and the observation direction forms a predetermined inclination angle with the needle patch 2. Accordingly, the needle patch inspection device 1 can observe the top, bottom, and height of the needle 22 formed on the needle patch 2 all at the same time. A detailed description of this will be provided later.

In the illustrated embodiment, the needle patch inspection device 1 includes a frame 100, a pallet 200, a lighting unit 300, a camera unit 400, a servomotor unit 500, and a control unit ( 600) and an output unit 700.

The frame 100 forms the exterior of the needle patch inspection device 1 and provides a space for inspection of the needle patch 2.

The frame 100 has a space inside which can accommodate the needle patch 2 and various components. The needle patch 2 can enter and exit the interior and exterior of the space during the inspection process.

In the illustrated embodiment, the frame 100 includes a moving plate 110 and a rail 120.

The moving plate 110 provides a space for placing the needle patch (2). A plurality of needle patches 2 may be disposed on the moving plate 110.

In the illustrated embodiment, the moving plate 110 is formed in a plate shape with a cross-sectional area larger than that of the needle patch 2. However, the moving plate 110 is not limited to the shape shown, and may be formed in various structures capable of transporting the needle patch 2.

The moving plate 110 may travel back and forth along a predetermined path. At this time, the moving plate 110 can move the needle patch 2 into or out of the frame 100 by entering or exiting the inside or outside of the frame 100. Traveling of the moving plate 110 may be performed manually or automatically.

A rail 120 is disposed on the lower side of the moving plate 110.

The rail 120 provides a travel path for the moving plate 110 and serves to transport the moving plate 110.

The rail 120 extends from the space inside the frame 100 to the outside of the space. Additionally, a moving plate 110 is disposed on the upper surface of the rail 120.

In one embodiment, the moving plate 110 may be translated along the extension direction of the rail 120 with respect to the upper surface of the rail 120. In the above embodiment, the moving plate 110 travels along the rail 120 and can enter and exit the frame 100.

In another embodiment, the rail 120 may be moved toward or away from the space within the frame 100. In the above embodiment, the moving plate 110 is coupled to a portion of the upper surface of the rail 120 and can move together with the rail 120.

The pallet 200 is placed on the moving plate 110 and can travel together with the moving plate 110.

The pallet 200 functions as a stand for the needle patch (2).

The pallet 200 is disposed on the upper surface of the moving plate 110. To this end, a depression in which the pellet can be seated may be formed on the upper surface of the moving plate 110. In one embodiment, a plurality of pallets 200 may be placed on one moving plate 110.

In the illustrated embodiment, the pallet 200 is formed in a plate shape with a cross-sectional area smaller than that of the moving plate 110 and larger than the cross-sectional area of the needle patch 2. However, the pallet 200 is not limited to the shape shown, and may be formed in various structures on which the needle patch 2 can be seated.

In one embodiment, needle patch 2 is disposed on substrate 210 located on the top surface of pallet 200. At this time, a plurality of substrates 210 may be provided. In the above embodiment, a depression in which the substrate 210 can be seated may be formed on the upper surface of the pallet 200.

In the illustrated embodiment, the substrate 210 is formed in a plate shape with a cross-sectional area smaller than that of the pallet 200 and larger than the cross-sectional area of the needle patch 2. Additionally, a plurality of needle patches 2 may be disposed on one substrate 210. To this end, a depression into which the needle patch 2 can be seated may be formed in the substrate 210.

In summary, a pallet 200 may be disposed on the upper surface of the moving plate 110, a plurality of substrates 210 may be disposed on the pallet 200, and a plurality of needle patches 2 may be placed on each substrate 210. can be placed. Accordingly, as the moving plate 110 travels, the pallet 200, the substrate 210, and the needle patch 2 may also travel together.

Additionally, since the plurality of needle patches 2 can be moved simultaneously, the plurality of needle patches 2 can be irradiated with just one inspection. Accordingly, the inspection speed for all of the plurality of needle patches 2 can be shortened.

Inspection of the needle patch (2) requires a light source for observation. For this purpose, the needle patch inspection device 1 is provided with an illumination unit 300.

The lighting unit 300 assists observation of the needle patch 2 by irradiating light to the needle patch 2 .

The lighting unit 300 illuminates 310 the upper surface of the pallet 200 on which the needle patch 2 is placed. At this time, the lighting unit 300 is arranged so that the direction of travel of the light emitted from the lighting unit 300 forms a predetermined inclination angle with the needle patch 2.

The lighting unit 300 is coupled to the inside of the frame 100 so as to be accommodated in the internal space of the frame 100.

In the illustrated embodiment, based on the time when the needle patch 2 is moved to the preset inspection position, the lighting unit 300 is disposed ahead of the needle patch 2 with respect to the traveling direction of the moving plate 110. .

However, the lighting unit 300 is not limited to the above embodiment and may be formed in various structures. In an embodiment not shown, the lighting unit 300 may be disposed on any one of the front side, left side, and right side of the needle patch 2 with respect to the traveling direction of the moving plate 110.

In the illustrated embodiment, the lighting unit 300 includes a lighting 310 and a lighting fixture 320.

The lighting 310 is arranged so that the direction of light travels at a predetermined inclination angle with the needle patch 2. At this time, the lighting fixture 320 is combined with the frame 100 and the lighting 310 to support the lighting 310 to maintain the predetermined inclination angle with the needle patch 2.

Additionally, the position of the lighting 310 may be arbitrarily changed. In one embodiment, the lighting 310 may move in left and right directions, forward and backward directions, and up and down directions, respectively.

A plurality of lights 310 may be provided. In the illustrated embodiment, a total of two lights 310 are provided, a first light 311 and a second light 312. At this time, the first light 311 and the second light 312 may be spaced apart from each other and moved individually. In one embodiment, the first lighting 311 and the second lighting 312 move with relative displacements that correspond to each other when moving in the left-right direction and the front-back direction, but move independently when moving in the up-down direction.

The light emitted from the lighting unit 300 collides with the needle patch 2 and then is reflected toward the camera unit 400.

The camera unit 400 photographs the top surface of the needle patch 2 and provides a shape image of the needle patch 2. At this time, the camera unit 400 is arranged so that the observation direction intersects the direction in which light from the lighting unit 300 travels and forms a predetermined inclination angle with the needle patch 2. Additionally, the predetermined inclination angle is formed to be the same as the inclination angle between the direction of light travel and the needle patch 2. In one embodiment, the predetermined inclination angle is formed at 45 degrees.

Since the camera unit 400 observes the needle patch 2 in an oblique direction rather than a vertical or horizontal direction, the top, bottom, and height of the needles 22 formed in the needle patch 2 can all be observed simultaneously.

The camera unit 400 is coupled to the inside of the frame 100 so as to be accommodated in the internal space of the frame 100. At this time, the camera unit 400 is disposed on the opposite side of the lighting unit 300 with respect to the traveling direction of the moving plate 110, based on the time when the needle patch 2 is moved to the preset inspection position.

In the illustrated embodiment, based on the time when the needle patch 2 is moved to the preset inspection position, the camera unit 400 displays the lighting unit 300 and the needle patch 2 with respect to the traveling direction of the moving plate 110. It is placed more rearward.

However, the camera unit 400 is not limited to the above embodiment and may be formed in various structures. In an embodiment not shown, the camera unit 400 may be disposed on any one of the front, left, and right sides of the lighting unit 300 and the needle patch 2 with respect to the traveling direction of the moving plate 110.

In one embodiment, the camera unit 400 may be a CCD (Charge Couple Device) camera.

In the illustrated embodiment, the camera unit 400 includes cameras 411 and 421 and camera fixtures 412 and 422.

The cameras 411 and 421 are arranged so that the observation direction intersects the direction in which light from the lighting unit 300 travels and forms a predetermined inclination angle with the needle patch 2. At this time, the camera fixtures 412 and 422 are combined with the frame 100 and the cameras 411 and 421 to support the cameras 411 and 421 to maintain the predetermined inclination angle with the needle patch 2.

Additionally, the positions of the cameras 411 and 421 may be arbitrarily changed. In one embodiment, the cameras 411 and 421 may move in left and right directions, forward and backward directions, and up and down directions, respectively.

In one embodiment, a plurality of camera units 400 may be provided. Accordingly, the number of needle patches 2 that can be inspected in one shot can be increased, and the inspection speed for the entire needle patch 2 can be shortened.

In the illustrated embodiment, there are two camera units 400, a first camera unit 410 and a second camera unit 420. The first camera unit 410 includes a first camera 411 and a first camera fixture 412, and the second camera portion 420 includes a second camera 421 and a second camera fixture 422. do.

The first camera 411 and the second camera 421 are supported by the first camera holder 412 and the second camera holder 422, respectively, and maintain the predetermined inclination angle with the needle patch 2.

The first camera 411 and the second camera 421 are arranged so that their respective observation directions intersect the light travel directions of the first lighting 311 and the second lighting 312.

In the illustrated embodiment, the first camera 411 and the second camera 421 are disposed rearward than the first light 311 and the second light 312, respectively, with respect to the traveling direction of the moving plate 110. . At this time, the relative position of the first camera 411 with respect to the first lighting 311 corresponds to the relative position of the second camera 421 with respect to the second lighting 312.

The first camera unit 410 and the second camera unit 420 may be moved separately from each other. In one embodiment, the first camera unit 410 and the second camera unit 420 move with relative displacements that correspond to each other when moving in the left-right direction and the front-back direction, but move independently when moving in the up-down direction.

The positions of the lighting unit 300 and the camera unit 400 can be adjusted by the servomotor unit 500. At this time, the servomotor unit 500 is driven by the control unit 600 and then transmits driving information to the output unit 700.

Hereinafter, the servomotor unit 500, control unit 600, and output unit 700 will be described with reference to FIG. 3.

The servomotor unit 500 controls the movement of the lighting unit 300 and the camera unit 400. At this time, the servomotor unit 500 maintains the relative position between the lighting unit 300 and the camera unit 400 and adjusts the positions of the lighting unit 300 and the camera unit 400. In one embodiment, the servomotor unit 500 maintains the relative position between the first lighting 311 and the first camera 411 and the relative position between the second lighting 312 and the second camera 421, and the lighting unit Adjust the positions of 300 and camera unit 400.

In the illustrated embodiment, the servomotor unit 500 includes an x-axis servomotor 510, a y-axis servomotor 520, and a z-axis servomotor 531 and 532.

The x-axis servomotor 510, y-axis servomotor 520, and z-axis servomotors 531 and 532 control the lateral position, longitudinal position, and height of the lighting unit 300 and the camera unit 400, respectively. .

In one embodiment, the x-axis servomotor 510 and the y-axis servomotor 520 move the plurality of lights 310 and the plurality of cameras 411 and 421 with the same relative displacement, and the z-axis servomotor 531 , 532) moves the plurality of lights 310 and the plurality of cameras 411 and 421 independently.

In the illustrated embodiment, the z-axis servomotors 531 and 532 include a first z-axis servomotor 531 and a second z-axis servomotor 532. The first z-axis servomotor 531 and the second z-axis servomotor 532 are driven independently of each other, and the first light 311 and the first camera 411 and the second light 312 and the second light, respectively Adjust the height of the camera 421.

The driving of the servomotor unit 500 is controlled by the control unit 600.

The control unit 600 generally controls the operation of the needle patch inspection device 1. For example, the control unit 600 commands the movement of the moving plate 110 and the pallet 200, or operates the lighting unit 300, the camera unit 400, and the servomotor unit 500.

In the illustrated embodiment, the control unit 600 includes a pallet position control unit 610, an illumination intensity control unit 620, and a servomotor control unit 630.

The pallet position control unit 610 controls the movement of the moving plate 110. For this purpose, the pallet position control unit 610 is electrically connected to the moving plate 110. As the movement of the moving plate 110 is controlled, the positions of the pallet 200, the substrate 210, and the needle patch 2 arranged on the moving plate 110 can also be controlled.

Before inspection of the needle patch 2, the moving plate 110 is positioned outside the frame 100. Thereafter, the pallet position control unit 610 moves the moving plate 110 toward the internal space of the frame 100 to inspect the needle patch 2 on the moving plate 110.

Additionally, when the inspection of the needle patch 2 is completed, the pallet position control unit 610 carries out the moving plate 110 to the outside of the frame 100. In the above process, the needle patch 2 travels with the moving plate 110 and can enter and exit the inside and outside of the frame 100.

In one embodiment, the input direction and discharge direction of the frame 100 of the moving plate 110 may be opposite to each other. In another embodiment, the input direction and discharge direction of the frame 100 of the moving plate 110 may be the same. In another embodiment, the input direction and discharge direction of the frame 100 of the moving plate 110 may intersect at a certain angle.

The lighting intensity control unit 620 is electrically connected to the lighting unit 300 and adjusts the brightness of the lighting unit 300. In one embodiment, the lighting intensity control unit 620 may individually adjust the brightness of each of the first lighting 311 and the second lighting 312.

The servo motor control unit 630 controls the driving of the servo motor unit 500. For this purpose, the servomotor control unit 630 is electrically connected to the servomotor unit 500. The servomotor control unit 630 can also control the positions of the lighting unit 300 and the camera unit 400 by controlling the starting and stopping of the servomotor unit 500.

The control results of the control unit 600 may be transmitted to the outside through the output unit 700.

The output unit 700 displays the test results of the needle patch test device 1 and provides them to the user. In one embodiment, the output unit 700 displays whether the needle patch 2 is defective based on the observed shape of the needle patch 2.

In the illustrated embodiment, the output unit 700 includes a needle-shaped output unit 710 and a position output unit 720.

The needle shape output unit 710 displays an image of the needle patch 2 captured by the camera unit 400. For this purpose, the needle-shaped output unit 710 is electrically connected to the camera unit 400. In one embodiment, the needle-shaped output unit 710 outputs an image generated by a CCD. A more detailed description of the output process and results is provided later.

The position output unit 720 is electrically connected to the camera unit 400 and the servomotor unit 500, and displays the position of the camera unit 400 at the time the needle patch 2 was photographed. Accordingly, the user can manage the needle patch 2 by linking the captured image with the position of the camera unit 400.

Above, each component of the needle patch inspection device 1 has been described. Hereinafter, a detailed inspection process of the needle patch inspection device 1 will be described with reference to FIGS. 4 to 6.

In the illustrated embodiment, the needle patch 2 includes a plate 21 and a plurality of needles 22 protruding from the upper surface of the plate 21.

As described above, the light irradiated from the lighting unit 300 toward the needle patch 2 collides with the needle patch 2 and then is reflected toward the camera unit 400.

The direction of light emitted from the lighting unit 300 forms a first angle θ1 with the normal line N of the needle patch 2. Additionally, the observation direction of the camera unit 400 forms a first angle (θ2) with the normal line (N) of the needle patch (2). At this time, it is preferable that the first angle θ1 and the first angle θ2 are formed to be the same. In one embodiment, the first angle θ1 and the first angle θ2 are formed at 45 degrees.

Accordingly, the top diameter, bottom diameter, and height of the needle 22 formed on the upper surface of the needle patch 2 can all be observed at the same time. Accordingly, the accuracy of inspecting whether the needle 22 is defective can be further improved.

In addition, since the top, bottom, and height of the needle 22 can all be observed in one shot, the number of lighting units 300 and camera units 400 essential for inspection of one needle patch 2 can be reduced. Accordingly, the structure of the needle patch inspection device 1 can be simplified, and the needle patch 2 inspection step can be shorter. Accordingly, the volume of the needle patch inspection device 1 can also be further reduced. Furthermore, the manufacturing cost and maintenance cost of the needle patch inspection device 1 can be further reduced.

The needle 22 formed on the needle patch 2 is generally formed in a cone shape. Hereinafter, the upper radius of the needle 22 will be referred to as the first radius (R1), and the lower radius will be referred to as the first radius (R2) (see FIG. 5).

In order to check whether the needle 22 is defective, the first radius (R1), the first radius (R2), and the height (H) of the needle 22 must be measured.

First, the measurement process of the first radius R1 will be described.

In the embodiment shown in FIG. 6, the upper end of the needle 22 does not have a step. In the above embodiment, the first radius R1 is considered to be the diameter of the upper end of the needle 22 divided by half.

In the embodiment shown in Figure 7, the upper end of the needle 22 is formed with a step and consists of a plurality of steps. In the above embodiment, the first radius R1 is considered to be the average value of the transverse lengths of the plurality of stairs formed at the upper end of the needle 22 divided by half.

The more specific measurement process is as follows. First, the center point (C) of the left and right ends of the lower part is recognized. Next, a discontinuity point where continuous perception upward from the center point C is cut off is determined.

When the upper end of the needle 22 consists of a plurality of stairs, the discontinuous point may be divided into a left discontinuous point and a right discontinuous point. When the lateral lengths at the left end discontinuity point and the right end discontinuity point are formed by the first width D1 and the second width D2, respectively, the first radius R1 is formed by the first width D1 and the second width D2. It is considered as the average value of width (D2) divided by half.

On the other hand, the first radius R2 is considered as a value divided by half the transverse length between the left and right ends of the lower part.

Lastly, the measurement process of the height (H) of the needle 22 will be described.

In the embodiment shown in FIG. 6, there is no height difference between the left end and the right end of the lower end of the needle 22. In the above embodiment, the height H of the needle 22 is considered to be the height difference between the lower end and the upper end of the needle 22.

In the embodiment shown in FIG. 7, there is a height difference between the left end and the right end of the lower end of the needle 22. In the above embodiment, the height H of the needle 22 is considered to be the height difference between the uppermost point of the needle 22 and the upper left end and the right end of the lower end of the needle 22. At this time, since the shape of the needle patch 2 is photographed in an inclined form, an angle correction process must be performed to measure the height (H) of the needle 22.

When the first radius (R1), first radius (R2), and height (H) of the needle 22 are all within a preset range, the needle patch 2 is judged to be normal. On the other hand, if any of the first radius R1, R2, and height H of the needle 22 are outside a preset range, the needle patch 2 is determined to be defective.

Below, a needle patch inspection method according to an embodiment of the present invention is shown with reference to FIGS. 7 to 9.

The needle patch inspection method can be performed by the needle patch inspection device 1 according to an embodiment of the present invention.

In the illustrated embodiment, the needle patch inspection method includes moving the pallet 200 to a preset inspection position along the rail 120 (S100), the position of the camera unit 400, and the luminous intensity and position of the lighting unit 300. is adjusted (S200), the camera unit 400 observes the shape of the needle 22 formed on the needle patch 2 (S300), and the observation result of the needle 22 is output to the outside (S400) ), a step in which the needle patch inspection device 1 is inspected (S500), and a step in which the pallet 200 is moved to the end position along the rail 120 (S600).

First, a step (S100) in which the pallet 200 is moved to a preset inspection position along the rail 120 will be described.

As described above, the pallet 200 placed on the moving plate 110 travels along the rail 120 together with the moving plate 110 and can enter and exit the inside and outside of the frame 100.

When a plurality of needle patches 2, which are inspection targets, are placed on the pallet 200, the pallet 200 is moved to a preset inspection position together with the needle patches 2. In one embodiment, the preset inspection position is located in the internal space of the frame 100.

When the pallet 200 and the needle patch 2 are moved to the preset inspection position, the position of the camera unit 400 and the brightness and position of the lighting unit 300 are adjusted. Below, a step (S200) in which the position of the camera unit 400 and the luminous intensity and position of the lighting unit 300 are adjusted will be described.

Referring to FIG. 8, the step of adjusting the position of the camera unit 400 and the brightness and position of the lighting unit 300 (S200) includes the step of returning the servomotor 500 to the origin (S210) and the servomotor unit ( 500 includes a step (S220) of adjusting the positions of the lighting unit 300 and the camera unit 400.

For normal operation, the servomotor unit 500 requires a process of returning to the origin before driving. After the origin return process, the servomotor unit 500 can adjust the positions of the lighting unit 300 and the camera unit 400.

In one embodiment, the step (S220) in which the servomotor unit 500 adjusts the positions of the lighting unit 300 and the camera unit 400 includes the x-axis servomotor 510 adjusting the positions of the lighting unit 300 and the camera unit 400. A step of adjusting the lateral position of (S221), a step of adjusting the longitudinal position of the lighting unit 300 and the camera unit 400 by the y-axis servomotor 520 (S222), and the z-axis servomotors 531 and 532. ) includes a step (S223) of adjusting the height of the lighting unit 300 and the camera unit 400.

In addition, when the lighting unit 300 and the camera unit 400 are equipped with two lights 310 and two cameras, respectively, the z-axis servomotors 531 and 532 of the lighting unit 300 and the camera unit 400 In the step of adjusting the height (S223), the first z-axis servomotor 531 adjusts the height of the first light 311 and the first camera 411 (S2231) and the second z-axis servomotor 532 ) includes a step (S2232) of adjusting the height of the second light 312 and the second camera 421.

When the lighting unit 300 and the camera unit 400 are adjusted to the positions required for inspection of the needle patch 2, the camera unit 400 photographs the needle patch 2. Hereinafter, a step (S300) in which the camera unit 400 observes the shape of the needle 22 formed on the needle patch 2 will be described.

The light emitted from the lighting unit 300 is irradiated toward the needle patch 2 and collides with the needle patch 2. The light that collides with the needle patch 2 is reflected toward the camera unit 400. At this time, the direction of light emitted from the lighting unit 300 and the needle patch 2 form a predetermined inclination angle, and the observation direction of the camera unit 400 also forms a predetermined inclination angle with the needle patch 2.

The camera unit 400 photographs the needles 22 formed in the needle patch 2 in an inclined shape through the light emitted from the lighting unit 300.

In one embodiment, the step (S300) in which the camera unit 400 observes the shape of the needle 22 formed on the needle patch 2 includes the camera unit 400 observing the top diameter, bottom diameter, and height of the needle 22. It includes a step of observing (S310). This is because the results of measuring the top diameter, bottom diameter, and height of the needle 22 are required to determine whether the needle 22 is defective.

When the observation is completed, the observation results are output to the outside. Below, the step (S400) in which the observation results of the needle 22 are output to the outside will be described.

In one embodiment, the step of outputting the observation result of the needle 22 to the outside (S400) is the step of outputting the shape of the needle 22 and the position information of the lighting unit 300 and the camera unit 400 to the outside (S410). ) includes.

The output unit 700 is electrically connected to the camera unit 400 and the servomotor unit 500, and receives observation result data of the needle 22 from the camera unit 400 and the servomotor unit 500, respectively.

The camera unit 400 transmits the captured image of the needle patch 2 to the output unit 700. In addition, the servomotor unit 500 transmits the position data of the camera unit 400 at the time of capturing the needle patch 2 to the output unit 700. Accordingly, the user can link and manage the captured image of the needle patch 2 and the location data of the camera unit 400.

The output unit 700 externally displays the received image of the needle patch 2 and the location data of the camera unit 400. Through this, the user can check whether the needle 22 formed on the needle patch 2 is defective.

At this time, if the shape of the needle 22 is not normally output in the captured image of the needle patch 2, the needle patch inspection device 1 is checked for malfunction. Below, the step (S500) in which the needle patch inspection device 1 is inspected will be described.

Referring to FIG. 9, the step (S500) in which the needle patch inspection device 1 is inspected is the step (S510) in which the connection member of the camera unit 400 is inspected, and the step in which the servomotor unit 500 is returned to the origin ( S520) and a step of resetting the preset inspection position (S530).

If a malfunction of the needle patch inspection device 1 is suspected, it can be checked whether CCD imaging of the needle 22 has failed and whether there is an error in the inspection position of the needle patch 2.

If CCD imaging of the needle 22 fails, the coupling between each component of the connection member of the camera unit 400 may be checked. If a connection problem is discovered during the above inspection process, reinforcement is provided.

Additionally, if an error occurs in the inspection position of the needle patch 2, the preset inspection position may be checked. If an error in the preset inspection position is found during the inspection process, the servomotor unit 500 may return to the origin and then the preset inspection position may be reset.

When the inspection of the needle patch inspection device 1 is completed, the camera unit 400 returns to the step S300 of observing the shape of the needle 22 formed in the needle patch 2, and the camera unit 400 returns to the needle patch 2. The process proceeds again from the step (S300) of observing the shape of the needle 22 formed in (2).

On the contrary, when the shape of the needle 22 is output normally in the captured image of the needle patch 2, the pallet 200 is moved to the rail 120 immediately after the step (S400) in which the observation result of the needle 22 is output to the outside. ), the step (S600) of moving to the end position is performed.

When normal observation data is collected, the operation of the needle patch inspection device 1 is terminated, and the pallet 200 on which the needle patch 2 is placed is moved back to the end position. In the above process, the pallet 200 travels along the rail 120 and can be moved from the inner space of the frame 100 to the outside.

In one embodiment, the ending position may be the initial position before inspection of the pallet 200. In another embodiment, the ending position may be spaced apart from the initial position before inspection of the pallet 200.

In one embodiment, the pallet 200 may be moved toward the initial position before inspection when the operation of the needle patch inspection device 1 is terminated. In another embodiment, the pallet 200 may be moved toward the end position, which is spaced apart from the initial position before the test, when the operation of the needle patch test device 1 ends.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the configuration of the above-described embodiments.

In addition, the present invention can be modified and changed in various ways by those skilled in the art to which the present invention pertains without departing from the spirit and scope of the invention as set forth in the claims below.

Furthermore, the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

1: Needle patch inspection device 100: Frame
110: moving plate 120: rail
200: pallet 210: substrate
300: lighting unit 310: lighting
311: first light 312: second light
320: Lighting fixture 400: Camera unit
410: first camera unit 411: first camera
412: first camera fixture 420: second camera unit
421: second camera 422: second camera fixture
500: servomotor part 510: x-axis servo motor
520: y-axis servo motor 531: first z-axis servo motor
532: Second z-axis servo motor 600: Control unit
700: Output unit 2: Needle patch
21: plate 22: needle

Claims (18)

A frame including rails and a moving plate capable of running along the rails;
a pallet formed in a plate shape, placed on the moving plate, capable of traveling together with the moving plate, and having a needle patch disposed on the upper surface;
a lighting unit that illuminates the upper surface of the pallet and is arranged so that the direction of light travels at a predetermined inclination angle with the needle patch; and
Photographing the upper surface of the needle patch, the observation direction intersects the direction of travel of the light and includes a camera unit forming a predetermined inclination angle with the needle patch,
Needle patch inspection device. According to paragraph 1,
Comprising a servomotor unit that adjusts the positions of the lighting unit and the camera unit while maintaining the relative position between the lighting unit and the camera unit,
Needle patch inspection device. According to paragraph 2,
The servo motor part,
an x-axis servomotor that adjusts the lateral positions of the lighting unit and the camera unit;
a y-axis servomotor that adjusts the longitudinal positions of the lighting unit and the camera unit; and
Including a z-axis servomotor that adjusts the height of the lighting unit and the camera unit,
Needle patch inspection device. According to paragraph 1,
The lighting unit,
It includes first lights and second lights spaced apart from each other,
The camera unit,
a first camera whose observation direction intersects the direction of travel of the first illumination light; and
A second camera whose observation direction intersects the direction of light of the second illumination and whose relative position to the second illumination corresponds to the relative position of the first camera to the first illumination. ,
Needle patch inspection device. According to paragraph 4,
A servo motor unit that adjusts the positions of the lighting unit and the camera unit while maintaining the relative position between the first lighting and the first camera and the relative position between the second lighting and the second camera,
an x-axis servomotor that adjusts the lateral positions of the lighting unit and the camera unit;
a y-axis servomotor that adjusts the longitudinal positions of the lighting unit and the camera unit;
A first z-axis servomotor that adjusts the height of the first light and the first camera; and
Including a second z-axis servomotor that adjusts the height of the second light and the second camera,
Needle patch inspection device. According to paragraph 4,
On the upper surface of the pallet,
A plurality of substrates formed in a plate shape smaller than the size of the pallet are disposed,
On the plurality of substrates,
Each of the plurality of needle patches is disposed,
Needle patch inspection device. According to paragraph 1,
The camera unit,
Observing the top diameter, bottom diameter and height of the needle formed in the needle patch,
Needle patch inspection device. According to paragraph 1,
The traveling direction of the light of the lighting unit and the observation direction of the camera unit are,
Each is arranged to form 45° with the needle patch,
Needle patch inspection device. A needle patch inspection method using the needle patch inspection device of any one of claims 1 to 8,
(a) moving the pallet to a preset inspection position along the rail;
(b) the camera unit observing the shape of the needle formed in the needle patch;
(c) outputting the needle observation results to the outside; and
(d) moving the pallet along the rail to an end position,
Needle patch test method. According to clause 9,
Before step (b) above,
(b0) a step of adjusting the position of the camera unit and the brightness and position of the lighting unit is performed,
Needle patch test method. According to clause 10,
In the step (b0),
(b01) returning the servo motor unit to the origin; and
(b02) comprising the step of adjusting the positions of the lighting unit and the camera unit by the servomotor unit,
Needle patch test method. According to clause 11,
In step (b02),
(b03) controlling the lateral positions of the lighting unit and the camera unit by the x-axis servomotor;
(b04) controlling the longitudinal positions of the lighting unit and the camera unit by the y-axis servomotor; and
(b05) comprising the step of adjusting the height of the lighting unit and the camera unit by the z-axis servomotor,
Needle patch test method. According to clause 12,
In step (b05),
(b051) adjusting the height of the first light and the first camera by the first z-axis servomotor; and
(b052) comprising the step of adjusting the height of the second light and the second camera by the second z-axis servomotor,
Needle patch test method. According to clause 9,
In step (b),
(b1) comprising the step of the camera unit observing the top diameter, bottom diameter, and height of the needle,
Needle patch test method. According to clause 9,
In step (c),
(c1) comprising outputting the shape of the needle and the position information of the lighting unit and the camera unit to the outside,
Needle patch test method. According to clause 9,
If the shape of the needle is not output normally after step (c),
(c2) the step of checking the needle patch inspection device is performed,
Proceeding again from step (b) above,
Needle patch test method. According to clause 16,
If CCD (Charge Coupled Device) imaging of the needle fails after step (c),
In step (c2),
(c21) including the step of inspecting the connection member of the camera unit,
Needle patch test method. According to clause 16,
If an error occurs in the inspection position of the needle patch after step (c),
In step (c2),
(c22) returning the servo motor unit to the origin; and
(c23) comprising the step of resetting the preset inspection position,
Needle patch test method.

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