Imaging device for tableting die inspection system, learning device for tableting die inspection system, judgment device for tableting die inspection system, recording medium for tableting die inspection system, and tableting die inspection system

Abstract

To provide an imaging device for a tableting die inspection system which is inexpensive and capable of inspecting tableting dies with high accuracy. [Solution] The imaging device 1 for a tableting die inspection system of the present invention comprises a mounting member 12, an illumination member 13, an imaging member 14, a rotation mechanism 15, and an elevation mechanism 16. As a result, the imaging device 1 for a tableting die inspection system of the present invention is inexpensive and can inspect the punch 11 of the tableting die with high accuracy.

Description

[Technical field]

[0001] The present invention relates to an imaging device for a tableting die inspection system, a learning device for a tableting die inspection system, a determination device for a tableting die inspection system, a recording medium for a tableting die inspection system, and a tableting die inspection system. [Background technology]

[0002] An imaging device for a tableting die inspection system is disclosed in the following Patent Document 1. The subject of the non-destructive film thickness measurement method by electron beam irradiation in Patent Document 1 is the film thickness on the tableting surface of a tableting punch using matrix high speed steel DRM2 (Daido Specialty Steel) as the base material and having a CrN film formed on the surface.

[0003] The non-destructive film thickness measurement method by electron beam irradiation of Patent Document 1 irradiates the tableting surface of a tablet press punch with an electron beam, measures the Fe-Kα characteristic X-ray intensity at multiple measurement points with a wavelength dispersive X-ray detector, and converts the film thickness of the CrN layer using a predetermined calibration curve. In this way, the non-destructive film thickness measurement method by electron beam irradiation of Patent Document 1 is suitable for quality control of machine parts used in the manufacture of tablets and the like that require strict quality control, such as dies and pestles that are the molds of a tablet press.

[0004] However, the non-destructive film thickness measurement method by electron beam irradiation of Patent Document 1 requires expensive equipment such as an electron beam irradiation device and a wavelength dispersive X-ray detector. Thus, it is preferable that an imaging device for a tableting die inspection system does not require expensive equipment.

[0005] For this reason, it is common for inspectors to check using a magnifying glass such as a loupe, or images from a stereo microscope or microscope. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2023-74503 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, inspections by inspectors using magnifying glasses such as loupes or checking images using a stereo microscope or microscope depend on the inspection ability of the individual inspector, and there is a possibility of variation in the inspection.

[0008] The present invention has been made in consideration of such problems, and an object of the present invention is to provide an imaging device for a tableting die inspection system, a learning device for a tableting die inspection system, a determination device for a tableting die inspection system, a recording medium for a tableting die inspection system, and a tableting die inspection system that can grasp the condition of the tableting surface from an image of the tableting surface of a tableting die obtained by imaging with a camera, without the need for expensive equipment such as a wavelength dispersive X-ray detector, by utilizing, for example, AI image processing. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, an imaging device for a tableting die inspection system according to a first aspect of the present invention is an imaging device for a tableting die inspection system, comprising a mounting member for mounting a tableting die, an illumination member for illuminating a predetermined surface of the tableting die, an imaging member for imaging the predetermined surface of the tableting die illuminated by the illumination member, and a moving mechanism for moving at least one of the mounting member, the illumination member and the imaging member, wherein the imaging member images the predetermined surface of the tableting die during at least one movement process of the moving mechanism to generate video data.

[0010] In the imaging device for the tableting mold inspection system of this invention, it is preferable that the moving mechanism has a rotation mechanism that rotates the mounting member around a rotation axis, and a reciprocating mechanism that moves the illumination member back and forth in the direction of the rotation axis of the rotation mechanism between the imaging member and the specified surface of the tableting mold.

[0011] In the imaging device for a tableting mold inspection system of the present invention, it is preferable that the illumination member has an annular light irradiation section centered on the rotation axis of the rotation mechanism.

[0012] In the imaging device for the tableting mold inspection system of this invention, it is preferable that the moving mechanism has a rotation mechanism that rotates the mounting member about a rotation axis in the vertical direction, and an up-and-down reciprocating mechanism that reciprocates the illumination member up and down in the direction of the rotation axis of the rotation mechanism between the imaging member and the specified surface of the tableting mold.

[0013] In the imaging device for a tableting mold inspection system of the present invention, it is preferable that the illumination member has an annular light irradiation section centered on the rotation axis of the rotation mechanism.

[0014] In the imaging device for the tableting die inspection system of this invention, it is preferable that the tableting die has several types of tableting dies having different lengths in the direction facing the imaging member, the imaging member is fixed, the incident surface of the imaging member into which light is incident from the specified surface of the tableting die faces the specified surface of the tableting die, and the mounting member has a distance maintaining mechanism that maintains a constant distance between the incident surface of the imaging member and the specified surfaces of the several types of tableting dies.

[0015] In order to solve the above-mentioned problems, the learning device for a tableting die inspection system according to a first aspect of the present invention is a learning device for a tableting die inspection system, comprising a creation unit, a learning unit, and a generation unit, wherein the creation unit creates learning video data by writing information about a tableting die into video data obtained by an imaging member of an imaging device for the tableting die inspection system of the present invention, the learning unit uses a learning algorithm to learn the state of the tableting die from a group of the learning video data created by the creation unit, and the generation unit generates learned video data for determining whether or not the tableting die needs to be replaced, based on the state of the tableting die learned in the learning unit.

[0016] In order to solve the above-mentioned problems, the judgment device for a tableting die inspection system of the first aspect of the present invention is a judgment device for a tableting die inspection system, comprising a setting unit and a judgment unit, wherein the setting unit sets a condition for whether or not to replace a tableting die, and extracts the learned video data based on the condition from a group of learned video data generated by a generation unit of a learning device for the tableting die inspection system of the present invention, and the judgment unit compares the video data obtained by an imaging device for the tableting die inspection system of the present invention with the learned video data extracted by the setting unit to judge whether or not the tableting die needs to be replaced.

[0017] In order to solve the above-mentioned problems, the tableting die inspection system of a first aspect of the present invention is characterized in that it comprises an imaging device for the tableting die inspection system of the present invention, a learning device for the tableting die inspection system of the present invention, and a judgment device for the tableting die inspection system of the present invention. Effect of the Invention

[0018] The imaging device for a tableting die inspection system, the learning device for a tableting die inspection system, the judgment device for a tableting die inspection system, the recording medium for a tableting die inspection system and the tableting die inspection system of this invention utilize, for example, AI image processing, and can grasp the condition of the tableting surface from an image of the tableting surface of the tableting die obtained by imaging with a camera, without the need for expensive equipment such as a wavelength dispersive X-ray detector. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a front view showing the appearance of an embodiment of an imaging device for a tableting die inspection system according to the present invention. [Diagram 2] FIG. 2 is a front view showing the inside of an imaging device for a tableting die inspection system in a used state. [Diagram 3] FIG. 3 is a side view showing the inside of an imaging device for a tableting mold inspection system in a used state, and is a view taken along the line III in FIG. [Figure 4]FIG. 4 is a plan view showing the inside of an imaging device for a tableting mold inspection system in a used state, and is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 5 is a cross-sectional view showing the inside of an imaging device for a tableting mold inspection system in a used state, and is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 6 is a partial plan view showing the imaging member, taken along the line VI in FIG. [Figure 7] 7 is a partial front view showing the rotating mechanism of the mounting member, taken along the line VII in FIG. [Figure 8] 8 is a partial front view showing the up-down reciprocating mechanism of the illumination member, as seen from the arrow VIII in FIG. [Figure 9] FIG. 9 is a perspective view showing a punch which is a tableting die. [Figure 10] FIG. 10 is a front view, partially in section, showing the mounting member with the first spacer attached thereto. [Figure 11] FIG. 11 is a front view, partially in section, showing the mounting member with the second spacer attached thereto. [Figure 12] FIG. 12 is a plan view showing the first spacer of FIG. 10 and the second spacer of FIG. [Figure 13] 13A and 13B are plan views showing a mounting member, in which (A) is a plan view showing a rotation mechanism of the mounting member, and (B) is a plan view showing the mounting surface of the mounting member. [Figure 14] FIG. 14 is an explanatory diagram showing the tableting surface of the pestle under a stereomicroscope. (A) is an explanatory diagram of the tableting surface of the pestle when the rotation angle is 0°. (B) is an explanatory diagram of the tableting surface of the pestle when rotated about 90° clockwise from the state of (A). (C) is an explanatory diagram of the tableting surface of the pestle when rotated about 180° clockwise from the state of (A). (D) is an explanatory diagram of the tableting surface of the pestle when rotated about 220° clockwise from the state of (A). (E) is an explanatory diagram of the tableting surface of the pestle when the light intensity of the illumination in the state of (C) is reduced by about 40%. (F) is an explanatory diagram of the tableting surface of the pestle when the light intensity of the illumination in the state of (C) is set to 0. [Figure 15]15 is an explanatory diagram showing the tableting surface of the pestle captured by an imaging device for the tableting mold inspection system of this invention. (A)(B)(C)(D)(E)(F)(G)(H) are explanatory diagrams of the tableting surface of the pestle in a state where the lighting member has made two reciprocating movements up and down while the mounting member has rotated approximately 360° clockwise between (A) and (H). [Figure 16] FIG. 16 is a block diagram showing an embodiment of a tableting die inspection system according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Below, an example of an embodiment (implementation) of the imaging device for a tableting die inspection system, the learning device for a tableting die inspection system, the judgment device for a tableting die inspection system, the recording medium for a tableting die inspection system, and the tableting die inspection system according to the present invention will be described with reference to the drawings.

[0021] The present invention is not limited to the following embodiments. The components in the following embodiments include those that a person skilled in the art can easily imagine, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the components disclosed in the following embodiments can be appropriately combined.

[0022] In addition, since the drawings are schematic diagrams, the main parts are shown and parts other than the main parts are not shown, and some hatching or cross sections are omitted.

[0023] 14 and 15 are diagrams showing images captured by the imaging member 14 in gray scale.

[0024] (Description of the embodiment) The tableting die inspection system S according to this embodiment will be described below. As shown in Fig. 16, the tableting die inspection system S is composed of an imaging device 1, a learning device 2, a judgment device 3, and recording media M10, M20, and M30. The workpiece as the target of the tableting die inspection system S is the die of a tableting machine, i.e., a tableting die, which is a punch 11 in this example.

[0025] (Explanation of pestle 11) As shown in Figures 1 to 3 and 9 to 11, the pestle 11 has a round bar shape. One end face of the pestle 11 is a tableting surface 110 for forming one side of the tablet, and forms a circular concave curved surface. The other end face of the pestle 11 is a mounting surface 111, and forms a circular flat surface.

[0026] The punch 11 has several kinds of punches with different lengths, such as the punch 11A having a length L1 of 133.6 mm shown in Figures 1 to 3, the punch 11B having a length L2 of 133.35 mm shown in Figure 10, and the punch 11C having a length L3 of 125 mm shown in Figure 11. The punch 11 also has several kinds of punches with different diameters of the mounting surface 111, such as punches with diameters of 19 mm, 25.4 mm, 28 mm, and 31.75 mm.

[0027] (Description of the Configuration of Imaging Device 1) 1 to 15 show an embodiment of an imaging device 1 for a tableting die inspection system. The configuration of the imaging device 1 for a tableting die inspection system will be described below.

[0028] The imaging device 1 for a tableting die inspection system inspects the tableting surface 110 of a punch 11. As shown in Fig. 1 to Fig. 5, the imaging device 1 for a tableting die inspection system is composed of a panel 100 and a frame 101, and is a hollow box. The panel 100 has a front panel, a back panel, a flat panel, a bottom panel, a left side panel, a right side panel, and a partition panel 103. The frame 101 has a plurality of vertical frames and a plurality of horizontal frames.

[0029] The imaging device 1 is installed on a floor surface 108 of the facility via legs 1080. The space inside the imaging device 1 is partitioned by a partition panel 103 into two, a left space portion 102L and a right space portion 102R, as shown in Figs. 1, 4, and 5.

[0030] As shown in Fig. 1, the front panel of panel 100 is divided into two parts, a left front panel and a right front panel. The left front panel is attached via a hinge 104 so that it can be opened and closed. A sight window 105 is provided on the left front panel. The left space portion 102L can be visually observed through this sight window 105. In addition, a handle 109 for opening and closing is provided on the left front panel.

[0031] The front panel on the right side is provided with an operation touch panel 106 and a display 107. The operation touch panel 106 is a means for operating the illumination member 13, the imaging member 14, the rotation mechanism 15, and the lifting mechanism 16 described below. The display 107 displays the operating states of at least the rotation mechanism 15 and the lifting mechanism 16 out of the illumination member 13, the imaging member 14, the rotation mechanism 15, and the lifting mechanism 16.

[0032] Furthermore, the right side panel is attached via a hinge 104 so as to be able to open and close.

[0033] The imaging device 1 for a tableting mold inspection system includes a mounting member 12, an illumination member 13, an imaging member 14, a rotation mechanism 15 as a moving mechanism, and a lifting mechanism 16 which is also a moving mechanism and is a vertical reciprocating mechanism.

[0034] (Description of mounting member 12) 1 to 4, 10, 11, and 13, the mounting member 12 is disposed at the bottom in the left space portion 102L via a rotation mechanism 15. The mounting member 12 is rotated by the rotation mechanism 15 in a clockwise direction, i.e., to the right, as viewed from above, with the vertical direction as a rotation axis V, as indicated by an arrow R in FIGS.

[0035] The mounting member 12 is vertically divided into two, an upper mounting member 12U and a lower mounting member 12D, with a horizontal plane perpendicular to the rotation axis V of the rotation mechanism 15 as a dividing plane. The upper mounting member 12U and the lower mounting member 12D are disk-shaped with the same diameter and centered on the rotation axis V. The plate thickness T of the upper mounting member 12U is thinner than the plate thickness of the lower mounting member 12D, and is 10 mm in this example.

[0036] The top surface of the upper mounting member 12U forms a horizontal mounting surface 120 perpendicular to the rotation axis V. At the center of the mounting surface 120 where the mounting surface 111 of the punch 11 is placed, several kinds of marks 1291, 1292, 1293, 1294 with different diameters φ1, φ2, φ3, φ4 of 19 mm, 25.4 mm, 28 mm, 31.75 mm are marked by scribing, as shown in Fig. 13(B). The diameters of these several kinds of marks 1291 to 1294 match the diameters of the mounting surfaces 111 of the several kinds of punches 11. As a result, when the mounting surface 111 of the punch 11 is placed on the mounting surface 120 of the mounting member 12, by aligning it with the marks 1291-1294 having the same diameter as the diameter of the mounting surface 111 of the punch 11, the central axis of the punch 11 coincides with the rotation axis V. This allows the imaging member 14 to capture an image of the tableting surface 110 of the punch 11 with high accuracy.

[0037] A guide protrusion 121 is integrally provided to protrude downward from the center of the underside of the upper mounting member 12U. A guide recess 122 is provided downward corresponding to the guide protrusion 121 at the center of the upper surface of the lower mounting member 12D. The guide protrusion 121 and the guide recess 122 are fitted together. The guide protrusion 121 and the guide recess 122 have a non-circular cross-sectional shape perpendicular to the rotation axis V, for example a hexagonal shape, and are not rotatable around the rotation axis V but are movable in the direction of the rotation axis V.

[0038] An adjustment screw 123 is attached at a position off the center of the upper mounting member 12U so as to be rotatable but not movable in the direction of the rotation axis of the adjustment screw 123. At a position off the center of the lower mounting member 12D, an adjustment screw hole 124 is provided in the direction of the rotation axis of the adjustment screw 123 in correspondence with the adjustment screw 123. The adjustment screw 123 is screwed into the adjustment screw hole 124. By rotating the adjustment screw 123 in a clockwise direction, i.e., to the right, or counterclockwise direction, i.e., to the left, the upper mounting member 12U moves up and down relative to the lower mounting member 12D using the guide protrusion 121 and the guide recess 122 as guides. As a result, the gap between the lower surface of the divided surface of the upper mounting member 12U and the upper surface of the divided surface of the lower mounting member 12D can be set to a gap C2 of 0.25 mm shown in FIG. 10, a gap C3 of 8.6 mm shown in FIG. 11, or 0 mm, i.e., none, as shown in FIGS. 1 to 3.

[0039] Spacers 1252 and 1253 may be interposed in the gaps C2 and C3 between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D. As shown in Figs. 10 to 12, the spacers 1252 and 1253 have a disk shape with the same diameter as the diameter of the upper mounting member 12U and the diameter of the lower mounting member 12D. The spacers 1252 and 1253 have slits 126 provided from the center to the edge in the radial direction. The slits 126 are provided to accommodate the guide protrusions 121 and the adjustment screws 123 when the spacers 1252 and 1253 are interposed in the gaps C2 and C3 between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D, so that the guide protrusions 121 and the adjustment screws 123 do not become blocking members when the spacers 1252 and 1253 are interposed.

[0040] (Explanation of distance maintaining mechanism 127) The upper mounting member 12U, the lower mounting member 12D, the adjustment screw 123, the adjustment screw hole 124, and the spacers 1252 and 1253 constitute a distance maintaining mechanism 127. The distance maintaining mechanism 127 maintains a constant distance WD between the lower end surface 140 of the imaging member 14 and the tableting surfaces 110 of several types of pestles 11A, 11B, and 11C that have different lengths. In this example, the distance WD is 110 mm. The lower end surface 140 of the imaging member 14 and the tableting surfaces 110 of the pestles 11A, 11B, and 11C face each other.

[0041] That is, in the case of the punch 11A having a length L1 of 133.6 mm, no gap is formed between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D, and no spacers 1252, 1253 are interposed, as shown in Figures 1 to 3. In this case, the distance between the tableting surface 110 of the punch 11A having a length L1 of 133.6 mm and the lower surface of the upper mounting member 12U or the upper surface of the lower mounting member 12D is L1 + T = 133.6 mm + 10 mm = 143.6 mm, as shown in Figure 3.

[0042] In the case of the punch 11B having a length L2 of 133.35 mm, a spacer 1252 having a thickness of 0.25 mm is interposed in the gap C2 between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D, as shown in Figure 10. In this case, the distance between the tableting surface 110 of the punch 11B having a length L2 of 133.35 mm and the upper surface of the lower mounting member 12D is L2 + T + C2 = 133.35 mm + 10 mm + 0.25 mm = 143.6 mm.

[0043] In the case of the punch 11C having a length L3 of 125 mm, a spacer 1253 having a thickness of 8.6 mm is interposed in the gap C3 between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D, as shown in Figure 11. In this case, the distance between the tableting surface 110 of the punch 11C having a length L3 of 125 mm and the upper surface of the lower mounting member 12D is L3 + T + C3 = 125 mm + 10 mm + 8.6 mm = 143.6 mm.

[0044] Thus, L1+T=L2+T+C2=L3+T+C3=143.6 mm, which is constant. Meanwhile, as described below, the vertical position of the lower end surface 140 of the imaging member 14 and the vertical position of the upper surface of the lower mounting member 12D are fixed. As a result, the distance maintaining mechanism 127 keeps the distance WD between the lower end surface 140 of the imaging member 14 and the tableting surfaces 110 of the several types of punches 11A, 11B, and 11C, which have different lengths, constant.

[0045] A rotation shaft portion 128 is integrally provided at the center of the lower surface of the lower mounting member 12D so as to protrude downward.

[0046] (Explanation of lighting component 13) As shown in Figs. 2 to 4, the lighting member 13 is disposed in the middle part of the left space portion 102L, that is, at a position above the placement member 12, via the lifting mechanism 16. The lighting member 13 illuminates the tableting surface 110, which is a predetermined surface of the pestle 11. The lighting member 13 has an annular light emitting portion 130 centered on the rotation axis V of the rotation mechanism 15. The lighting member 13 is a so-called ring lighting device that annularly illuminates the tableting surface 110 of the pestle 11 by the annular light emitting portion 130. The lighting member 13 is turned on when inspecting the appearance of the pestle 11. At this time, the front panel 100 is closed. The lighting member 13 is turned off when the inspection is completed. The lighting member 13 is turned on and off automatically or manually.

[0047] An interior lighting member (not shown) is disposed approximately in the center of the upper portion of the left space portion 102L.

[0048] (Explanation of imaging member 14) As shown in Figs. 2, 3, and 6, the imaging member 14 has a camera section 141 and a lens section 142 that is integrally provided at one end of the camera section 141, in this example, at the lower end. The lens section 142 houses a lens group (not shown) in a cylindrical body. One end face of the lens section 142, in this example, the lower end face 140, is opened and constitutes an entrance face into which light from the tableting surface 110 of the tableting dies 11, 11A, 11B, and 11C is incident. The camera section 141 converts the image of the tableting surface 110 of the pestle 11 captured by the lens section 142 into an electrical signal, stores the image electrical signal, and outputs the image electrical signal as necessary.

[0049] The imaging member 14 is disposed at a position substantially above the left space portion 102L, that is, above the placement member 12 and the illumination member 13, via the first mounting bracket 143. The vertical position of the lower end surface 140 of the imaging member 14 is fixed. In this example, the first mounting bracket 143 is L-shaped. The horizontal portion of the first mounting bracket 143 is attached to the frame 101. The camera unit 141 of the imaging member 14 is attached to the vertical portion of the first mounting bracket 143. The optical axis (not shown) of the lens unit 142 of the imaging member 14 coincides with the rotation axis V of the rotation mechanism 15. The focal point of the lens unit 142 of the imaging member 14 is adjusted to the tableting surface 110 of the punch 11.

[0050] The imaging member 14 captures an image of the tableting surface 110 of the pestle 11 illuminated by the illumination member 13. In this example, the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video during one imaging process that combines one rotation process of the rotation mechanism 15 and two lifting and lowering processes of the lifting mechanism 16, and generates the video data D1. In this example, one imaging process is a process in which the lifting mechanism 16 lifts and lowers twice while the rotation mechanism 15 rotates once in 10 seconds, i.e., 360°.

[0051] (Description of Rotation Mechanism 15) 1 to 5, 8 to 11, and 13(A), the rotation mechanism 15 rotates the mounting member 12 about a rotation axis V that is in the vertical direction. The rotation mechanism 15 has a first support table 151 that supports the mounting member 12, a first motor M1, a second support table 152 that supports the first motor M1, and a rotational force transmission unit 153 that transmits the rotational force of the first motor M1 to the mounting member 12.

[0052] The first support table 151 and the second support table 152 are disposed in front and behind in the left space portion 102L, respectively, and are fixed to the bottom panel 100. The first support table 151 supports the rotation shaft portion 128 of the mounting member 12 rotatably about the rotation axis V via a support portion 154 such as a bearing.

[0053] The rotational force transmission section 153 has a first timing pulley 155 on the output side attached to the lower end of the rotating shaft section 128 of the mounting member 12, a second timing pulley 156 on the input side attached to the rotating shaft of the first motor M1, and a timing belt 157 that is looped around the first timing pulley 155 and the second timing pulley 156.

[0054] When the first motor M1 is driven, the rotational force of the first motor M1 is transmitted to the rotation shaft portion 128 of the mounting member 12 via the second timing pulley 156, the timing belt 157, and the first timing pulley 155 of the rotational force transmission portion 153. As a result, the mounting member 12 rotates around the rotation axis V.

[0055] (Explanation of lift mechanism 16) The lifting mechanism 16 is disposed in the center of the left-side space portion 102L, i.e., approximately between the mounting member 12 and the imaging member 14. As shown in Figures 2 to 4 and 7, the lifting mechanism 16 reciprocates the illumination member 13 up and down in the direction of the rotation axis V of the rotation mechanism 15 between the lower end surface 140 of the imaging member 14 and the tableting surface 110 of the punch 11. The lifting mechanism 16 has a second motor M2 and a crank mechanism 160 that converts the rotational motion of the second motor M2 into a vertical reciprocating motion of the illumination member 13, i.e., lifting motion.

[0056] The second motor M2 is attached to the rear middle panel 100BC. The crank mechanism 160 has a rotating disk 161 attached to the rotating shaft of the second motor M2, a lifting unit 162 attached to the front middle panel 100FC, and a conversion rod 163 attached to the rotating disk 161 and the lifting unit 162. The lifting unit 162 has a rail 164 attached to the front middle panel 100FC, and a slider 165 attached to the rail 164 so as to be movable up and down. The left and right end portions of the rear middle panel 100BC and the front middle panel 100FC are fixed to the left and right frames 101, respectively.

[0057] One end of the conversion rod 163, in this example the lower end, is attached to an edge portion of the rotating disk 161 at a position offset from the center of rotation via a lower connecting pin 166. The other end of the conversion rod 163, in this example the upper end, is attached to the slider 165 via an upper connecting pin 167.

[0058] The lighting member 13 is attached to the slider 165 via a second mounting bracket 168. The second mounting bracket 168 is L-shaped. A vertical portion of the second mounting bracket 168 is attached to the slider 165. The lighting member 13 is attached to a horizontal portion of the second mounting bracket 168.

[0059] When the second motor M2 is driven, the rotating disk 161 attached to the rotating shaft of the second motor M2 rotates in the clockwise direction R1 as viewed from the front, as shown by the arrow R1 in Figs. 2 and 4. The rotational motion of the rotating disk 161 is converted into the up and down reciprocating motion of the slider 165 as shown by the arrow UD in Fig. 3 via the lower connecting pin 166, the conversion rod 163, and the upper connecting pin 167. The slider 165 moves up and down relative to the rail 164. As the slider 165 moves up and down, the illumination member 13 reciprocates up and down in the direction of the rotation axis V of the rotation mechanism 15, that is, moves up and down, between the lower end surface 140 of the imaging member 14 and the tableting surface 110 of the punch 11. The lifting stroke ST of the illumination member 13 is 80 mm in this example.

[0060] (Explanation of the first motor M1 and the second motor M2) The first motor M1 and the second motor M2 are each composed of a stepping motor. The rotation angles of the first motor M1 and the second motor M2 are controlled based on a pulse signal. In this example, while the first motor M1 rotates once in 10 seconds, the second motor M2 rotates twice. As a result, while the first motor M1 rotates once in 10 seconds, that is, through one rotation of the mounting member 12 in 10 seconds, the pestle 11 rotates once around the rotation axis V in 10 seconds, the second motor M2 rotates twice, that is, through two lifts and lowers of the slider 165, the illumination member 13 rises and lowers twice. Here, the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video, with one rotation of the pestle 11 and two lifts and lowers of the illumination member 13 as one movement process, and generates video data D1.

[0061] (Description of Function of Imaging Device 1) The imaging device 1 for a tableting mold inspection system according to this embodiment is configured as described above, and its operation will be described below.

[0062] First, the distance maintaining mechanism 127 is adjusted according to the length of the punches 11A, 11B, and 11C of the workpiece to be inspected, and the spacers 1252 and 1253 are not interposed between the lower surface of the upper mounting member 12U and the upper surface of the lower mounting member 12D, or the spacer 1252 or the spacer 1253 is interposed. This keeps the distance WD between the lower end surface 140 of the imaging member 14 and the tableting surfaces 110 of the several types of punches 11A, 11B, and 11C of different lengths constant.

[0063] Next, the mounting surface 111 of the pestle 11 of the workpiece to be inspected is placed on the mounting surface 120 of the mounting member 12 so as to align it with the predetermined markings 129, i.e., so that the diameters of the mounting surface 111 of the pestle 11, 19 mm, 25.4 mm, 28 mm, and 31.75 mm, match with the diameters φ1, φ2, φ3, and φ4 of the markings 129, respectively.

[0064] Then, imaging of the imaging member 14, lighting of the illumination member 13, and driving of the first motor M1 and the second motor M2 are started simultaneously. Then, by driving the first motor M1, the mounting member 12 rotates once every 10 seconds via the rotation mechanism 15, and the tableting surface 110 of the punch 11 rotates once every 10 seconds. In addition, by driving the second motor M2, the illumination member 13 reciprocates up and down twice every 10 seconds, i.e., rises and falls twice, via the lifting mechanism 16.

[0065] The imaging member 14 captures the tableting surface 110 of the pestle 11 as a video while the tableting surface 110 of the pestle 11 rotates once every 10 seconds and while the lighting member 13 rises and falls twice every 10 seconds, i.e., during one imaging process, and generates the video data D1.

[0066] The type and information of the pestle 11, the distance adjustment status of the distance maintaining mechanism 127, the on / off status of the lighting member 13, the video capturing status of the imaging member 14, the rotation status of the rotation mechanism 15, and the lifting status of the lifting mechanism 16 are displayed on the display 107 as necessary.

[0067] (Explanation of Effects of Imaging Device 1) The imaging device 1 for a tableting mold inspection system according to this embodiment has the above-mentioned configuration and functions, and the effects thereof will be described below.

[0068] The imaging device 1 for the tableting die inspection system according to this embodiment includes a mounting member 12, an illumination member 13, an imaging member 14, a rotation mechanism 15, and a lifting mechanism 16, and the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video while the rotation mechanism 15 rotates once in 10 seconds and while the lifting mechanism 16 rises and falls twice in 10 seconds, i.e., during one imaging process, to generate video data D1. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment does not require expensive equipment such as an electron beam irradiation device and a wavelength dispersive X-ray detector, as in the non-destructive film thickness measurement method by electron beam irradiation of Patent Document 1, and therefore an inexpensive imaging device 1 for the tableting die inspection system can be provided.

[0069] In the imaging device 1 for the tableting die inspection system according to this embodiment, the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video and generates video data D1 while the rotating mechanism 15 rotates the tableting surface 110 of the pestle 11 once in 10 seconds and while the elevating mechanism 16 raises and lowers the illumination member 13 twice in 10 seconds, i.e., during one imaging process. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment inspects the appearance of the tableting surface 110 of the pestle 11 based on the video data D1, and therefore can inspect the tableting surface 110 of the pestle 11 with high accuracy compared to existing tableting die inspection devices that inspect the appearance of a specific surface of a tableting die based on still image data. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment can grasp and confirm the appearance condition of the tableting surface 110 of the pestle 11 with high accuracy and manage the pestle 11. In this way, the imaging device 1 for the tableting mold inspection system in this embodiment can, for example, utilize AI image processing, and without the need for expensive equipment such as a wavelength dispersive X-ray detector, can grasp the condition of the tableting surface 110 of the pestle 11, which is a tableting mold, from an image of the tableting surface 110 of the pestle 11 obtained by imaging with a camera, i.e., the imaging member 14.

[0070] (Explanation of conventional inspection methods) Fig. 14 is an image obtained by observing the condition of a specific surface of a tableting die, in this example, the tableting surface 110 of the punch 11, using a stereomicroscope with a fixed position light as illumination. Observation and inspection are performed using still images. For this reason, with existing tableting die inspection devices, there is a possibility that a scratch D on the tableting surface 110 of the punch 11, as shown in Fig. 14, may be overlooked.

[0071] In FIG. 14, (A) is the tableting surface 110 of the punch 11 at a rotation angle of 0°, where the scratch D is not visible due to halation or the like. (B) is the tableting surface 110 of the punch 11 in a state rotated about 90° clockwise from the state of (A), where the scratch D is not visible due to halation or the like, as in (A). (C) is the tableting surface 110 of the punch 11 in a state rotated about 180° clockwise from the state of (A), or rotated about 90° clockwise from the state of (B), where the scratch D is not visible due to halation or the like, as in (A) and (B). (D) is the tableting surface 110 of the punch 11 in a state rotated about 220° clockwise from the state of (A), or rotated about 130° clockwise from the state of (B), or rotated about 40° clockwise from the state of (C), where the scratch D in the small circle is visible.

[0072] Moreover, (E) is the tableting surface 110 of the punch 11 in the state where the amount of light from the lighting in the state (C) has been reduced by approximately 40%, and the scratch D which was not visible in the state (C) is visible in the state (E), as shown in the small circle.

[0073] Furthermore, (F) is the tableting surface 110 of the punch 11 when the amount of light from the lighting in the state of (C) is set to 0, and scratch D, which was not visible in the state of (C), is visible in the state of (F), as shown in the small circle.

[0074] In this way, when observing the condition of the tableting surface 110 of the pestle 11 using a stereomicroscope with a fixed-position light as illumination, an inspector would manually move the pestle 11 up and down or rotate it to find scratches. How to move the pestle 11 may be based on the inspector's experience, and for example, a new inspector may not be able to properly find scratches on the tableting surface 110.

[0075] In the imaging device 1 for a tableting die inspection system, the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video while the tableting surface 110 of the pestle 11 rotates once in 10 seconds and while the illumination member 13 rises and falls twice in 10 seconds, i.e., during one imaging process, and generates video data. As a result, the imaging device 1 for a tableting die inspection system according to this embodiment shows the scratch D as shown in the small circle in Fig. 15(A) to (H). In this way, the imaging device 1 moves the pestle 11 in a fixed manner so that the scratch is reflected in the image captured by the camera unit 141, and an image showing the scratch can be obtained without the need for an inspector.

[0076] In the imaging device 1 for a tableting die inspection system according to this embodiment, the illumination member 13 has an annular light irradiating section 130 centered on the rotation axis V of the rotation mechanism 15. As a result, the imaging device 1 for a tableting die inspection system according to this embodiment can uniformly irradiate light onto the circular tableting surface 110 of the punch 11, and therefore can inspect the tableting surface 110 of the punch 11 with high accuracy.

[0077] In the imaging device 1 for the tableting die inspection system according to this embodiment, the mounting member 12 has a distance holding mechanism 127 that keeps the distance WD constant between the lower end surface 140 of the opposing imaging member 14 and the tableting surfaces 110 of several types of pestles 11, 11A, 11B, 11C having different lengths L1, L2, L3. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment can keep the distance WD constant between the lower end surface 140 of the opposing imaging member 14 and the tableting surfaces 110 of several types of pestles 11, 11A, 11B, 11C having different lengths L1, L2, L3 by the distance holding mechanism 127, even if the lengths L1, L2, L3 of the pestles 11, 11A, 11B, 11C in the direction facing the imaging member 14 are different. As a result, the imaging device 1 for the tableting mold inspection system in this embodiment can adjust the focus of the imaging member 14 to the tableting surfaces 110 of several types of pestles 11, 11A, 11B, and 11C having different lengths L1, L2, and L3, and can therefore inspect the tableting surfaces 110 of several types of pestles 11, 11A, 11B, and 11C having different lengths L1, L2, and L3 with high precision.

[0078] In the imaging device 1 for a tableting mold inspection system of this embodiment, the mounting member 12 has a horizontal mounting surface 120 on which the punch 11 is placed, and the portion of the mounting surface 120 on which the punch 11 is placed has several types of markings 1291-1294 with different diameters φ1, φ2, φ3, φ4 attached, and the diameters φ1, φ2, φ3, φ4 of the several types of markings 1291-1294 match the diameters of the mounting surface 111 for the several types of punches 11. As a result, even if the diameter of the mounting surface 111 of the punch 11 varies, the imaging device 1 for the tableting die inspection system according to this embodiment can align the central axis of the punch 11 with the rotation axis V by aligning the mounting surface 111 of the punch 11 with the marks 1291-1294 having the same diameter as the diameter of the mounting surface 111 of the punch 11 when placing the mounting surface 111 of the punch 11 on the mounting surface 120 of the mounting member 12. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment can image the tableting surface 110 of the punch 11 with high precision using the imaging member 14.

[0079] (Explanation of the Tableting Mold Inspection System S) 16 is a block diagram showing a tableting die inspection system S according to this embodiment. The tableting die inspection system S includes an imaging device 1 for the tableting die inspection system, a learning device 2 for the tableting die inspection system, a judgment device 3 for the tableting die inspection system, and recording media M10, M20, and M30. In this example, the learning device 2 and judgment device 3 of the tableting die inspection system S are mainly composed of hardware such as a CPU (Central Processing Unit) and storage units 17, 23, and 33 (ROM (Read Only Memory), RAM (Random Access Memory), non-volatile memory, etc.), i.e., a microcomputer.

[0080] (Description of imaging device 1 for tableting mold inspection system) 16, the imaging device 1 for a tableting die inspection system comprises the above-mentioned mounting member 12, lighting member 13, imaging member 14, rotating mechanism 15, lifting mechanism 16 and storage unit 17. The turning on and off of the lighting member 13, video imaging by the imaging member 14, rotation of the rotating mechanism 15 and lifting and lowering of the lifting mechanism 16 are controlled by a control unit of a microcomputer.

[0081] As described above, the imaging member 14 captures the tableting surface 110 of the punch 11 as a video while the rotation mechanism 15 rotates once in 10 seconds and while the lifting mechanism 16 rises and falls twice in 10 seconds, i.e., during one imaging process, to generate video data D1. The video data D1 is recorded in the recording medium M10 and the storage unit 17. The video data D1 is output to the learning device 2 and the determination device 3 directly or via the network NW1 or the recording medium M10.

[0082] In this example, the recording medium M10 is a flash memory or an optical disk, and the storage unit 17 is a RAM, a solid state drive (SSD), or a hard disk drive (HDD).

[0083] In this way, the imaging device 1 for the tableting die inspection system and the tableting die inspection system S according to this embodiment are inexpensive as described above, and furthermore, can obtain highly accurate video data D1.

[0084] Moreover, since the video data D1 is recorded on the recording medium M10 and the storage unit 17, it can be arbitrarily extracted from the recording medium M10 or the storage unit 17 for use.

[0085] (Explanation of learning device 2 for tableting die inspection system) As shown in FIG. 16, the learning device 2 for a tableting die inspection system includes a creation unit 20, a learning unit 21, a generation unit 22, and a storage unit 23.

[0086] (Explanation of Creation Part 20) The creation unit 20 writes information about the punch 11 into the video data D1 obtained by the imaging member 14 to create learning video data D2. The information about the punch 11 includes, for example, the number of tablet presses, tablet press pressure, environmental conditions such as temperature and humidity, the material and hardness of the tablets, and the tablet press using the punch 11. The video data D1 is also displayed on a display (not shown) of the learning device, and when a scratch or the like is indicated by an inspector, the location of the scratch or the like is specified, and this information is also included as information about the punch 11.

[0087] The learning video data D2 is output to the learning unit 21. The learning video data D2 is recorded on a recording medium M20 and a storage unit 23. In this example, the recording medium M20 is a flash memory or an optical disk, and the storage unit 23 is, for example, a RAM, a solid state drive (SSD), or a hard disk drive (HDD).

[0088] (Explanation of learning section 21) The learning unit 21 learns the state of the tableting die, i.e., the state of the tableting surface 110 of the punch 11, from a group of training video data D2 created by the creation unit 20 through, for example, neural network learning (AI: deep learning / machine learning). The state of the tableting surface 110 of the punch 11 is recorded in the recording medium M20 and the memory unit 23 together with the training video data D2.

[0089] The learning unit 21 performs machine learning from a group of learning video data D2 obtained directly from the creation unit 20 or from the recording medium M20 or the storage unit 23. As is well known, a neural network is a combination of mathematical models of neurons in the human brain and nervous system, and in a neural network, learning refers to the process of adjusting parameters (weights and biases) so that a result desired by humans (a correct control answer for the learning target device, in other words, a correct answer) is obtained at the output layer (node) that outputs final data, via the input layer (node) that receives input data, and a hidden layer (node) that changes the way the network is connected depending on the learning content.

[0090] (Description of Generation Unit 22) The generation unit 22 generates learned video data D3 for determining whether or not the pestle 11 needs to be replaced, based on the state of the tableting surface 110 of the pestle 11 learned by the learning unit 21. The learned video data D3 is recorded in the recording medium M20 and the storage unit 23 together with the learning video data D2 and the state of the tableting surface 110 of the pestle 11. In addition, the learned video data D3 is output to the determination device 3 directly or via the network NW2 or the recording medium M20.

[0091] The creation of the creation unit 20, the learning of the learning unit 21, and the generation of the generation unit 22 are realized by the CPU reading out a program stored in advance in a ROM or the like into a RAM and executing it. In addition, the creation status of the creation unit 20, the learning status of the learning unit 21, and the generation status of the generation unit 22 are displayed on the display 107 as necessary.

[0092] In this manner, the learning device 2 and the tableting die inspection system S for the tableting die inspection system according to this embodiment can create high-precision learning video data D2 from a group of high-precision video data D1 obtained by the imaging member 14 in the creation unit 20. Furthermore, the learning device 2 and the tableting die inspection system S for the tableting die inspection system according to this embodiment can learn the state of the tableting surface 110 of the punch 11 with high precision in the learning unit 21 from the group of high-precision learning video data D2 created in the creation unit 20. Furthermore, the learning device 2 and the tableting die inspection system S for the tableting die inspection system according to this embodiment can generate learned video data D3 for determining whether or not the punch 11 needs to be replaced with high precision in the generation unit 22 based on the high-precision state of the tableting surface 110 of the punch 11 learned in the learning unit 21.

[0093] In addition, since the learning video data D2, the state of the tableting surface 110 of the pestle 11, and the learned video data D3 are recorded in the recording medium M20 and the memory unit 23, they can be arbitrarily extracted from the recording medium M20 or the memory unit 23 and used.

[0094] (Description of the judgment device 3 for the tableting mold inspection system) The determination device 3 for the tableting mold inspection system includes a setting unit 31, a determination unit 32, and a storage unit 33, as shown in FIG.

[0095] The setting unit 31 sets the conditions for whether or not to replace the punch 11, and extracts learned video data D3 based on the set conditions from a group of learned video data D3 generated by the generation unit 22 of the learning device 2 for a tableting die inspection system. The conditions for whether or not to replace the punch 11 include information on the punch 11 and information on scratches D and wear on the tableting surface 110 of the punch 11. The conditions for whether or not to replace the punch 11 are set based on this information. The group of learned video data D3 is obtained directly from the generation unit 22 or via the network NW3, or from a recording medium M20 for the tableting die inspection system.

[0096] The judgment unit 32 compares the video data D1 obtained by the imaging device 1 for the tableting die inspection system with the learned video data D3 extracted by the setting unit 31 to judge whether or not the punch 11 needs to be replaced. The video data D1 is acquired from the imaging member 14 of the imaging device 1 directly or via the network NW1.

[0097] The setting and extraction of the setting unit 31 and the judgment of the judgment unit 32 are realized by the CPU reading out a program stored in advance in a ROM or the like into a RAM and executing it. The setting status of the necessity condition of the setting unit 31 and the judgment status of the judgment unit 32 are displayed on the display 107 as necessary.

[0098] At least one of the data on the necessity conditions set by the setting unit 31, the extracted learned video data D3, and the judgment data judged by the judgment unit 32 is stored in a recording medium M30 for the tableting die inspection system and a memory unit 33. In this example, the recording medium M30 is a flash memory or an optical disk, and the memory unit 33 is, for example, a RAM, an SSD (Solid State Drive), or an HDD (Hard Disk Drive).

[0099] The determination device 3 for the tableting die inspection system and the tableting die inspection system S according to this embodiment can extract learned video data D3 based on the necessity condition set by the setting unit 31 with high accuracy. Furthermore, the determination device 3 for the tableting die inspection system and the tableting die inspection system S according to this embodiment can determine with high accuracy by the determination unit 32 whether or not the punch 11 needs to be replaced.

[0100] In addition, the judgment device 3 for the tableting die inspection system and the tableting die inspection system S in this embodiment are equipped with a recording medium M30 and a memory unit 33 in which at least one of a group of data on necessity conditions set by the setting unit 31, a group of extracted learned video data D3, or a group of judgments judged by the judgment unit 32 is stored, as shown in Figure 16.Therefore, at least one of the learned video data D3 extracted with high accuracy based on the set necessity conditions, or data on the necessity of replacing the punch 11 judged with high accuracy, can be arbitrarily extracted and used from at least one of the recording medium M30 or the memory unit 33.

[0101] In this way, the tableting die inspection system S according to this embodiment can grasp the condition of the tableting surface from an image of the tableting surface of the tableting die obtained by imaging with a camera, for example, by utilizing AI image processing, without the need for expensive equipment such as a wavelength dispersive X-ray detector.

[0102] (Explanation of examples other than the embodiment) It should be noted that the present invention is not limited by the above-mentioned embodiment and modified examples. For example, in the above-mentioned embodiment, the punches 11, 11A, 11B, and 11C, which are the molds of a tablet press, are described as the tablet press molds. However, in this invention, the tablet press molds may be mortars, which are the molds of a tablet press. In the case of a mortar, the tablet press surface is a concave surface, as opposed to the convex surface in the case of the punches 11, 11A, 11B, and 11C.

[0103] In the above embodiment, an example is described in which the moving mechanism includes the rotation mechanism 15 that rotates the mounting member 12 and the lifting mechanism 16 that lifts and lowers the illumination member 13. However, in the present invention, the moving mechanism may include only the rotation mechanism 15 that rotates the mounting member 12 or only the lifting mechanism 16 that lifts and lowers the illumination member 13.

[0104] In the above embodiment, an example is described in which the lifting mechanism 16 is used to lift the illumination member 13. However, in the present invention, a moving mechanism that moves the illumination member 13 back and forth, left and right, or diagonally may be used.

[0105] Furthermore, in the above embodiment, an example is described in which the moving mechanism is the rotation mechanism 15 that rotates the mounting member 12 and the lifting mechanism 16 that lifts the illumination member 13. However, in the present invention, the moving mechanism may be at least one of a rotation mechanism that rotates the imaging member 14 and a lifting mechanism that lifts the imaging member 14.

[0106] Furthermore, the illumination member 13 will be described as having an annular light irradiation unit 130 centered on the rotation axis V of the rotation mechanism 15. However, in the present invention, the illumination member may be one in which a plurality of light sources are arranged in a ring shape centered on the rotation axis V of the rotation mechanism 15, and the plurality of light sources are repeatedly turned on and off in sequence. In this case, if a rotation mechanism that rotates at least one of the mounting member 12 or the imaging member 14 around the rotation axis V is provided, high-precision video data D1 can be obtained.

[0107] In this way, the moving mechanisms for the mounting member 12, the illumination member 13, and the imaging member 14 can be selected taking into consideration the balance between cost and acquisition of high-precision video data D1. Moreover, the moving mechanism may be any mechanism that moves at least one of the mounting member 12, the illumination member 13, and the imaging member 14.

[0108] Furthermore, in the above embodiment, an example is described in which the rotation mechanism 15 rotates once in 10 seconds and the lifting mechanism 16 ascends and descends twice in 10 seconds as one imaging process of the moving image of the imaging member 14. However, in this invention, as one imaging process of the moving image of the imaging member 14, one rotation of the rotation mechanism 15 may be slower or faster than 10 seconds, and one elevation of the lifting mechanism 16 may be slower or faster than 5 seconds. This may be determined taking into consideration the length of the tact, the efficiency of one imaging process of the moving image of the imaging member 14, and the accuracy of the moving image data D1.

[0109] Furthermore, in the above embodiment, the damage D on the appearance of a predetermined surface of the tableting die, that is, the tableting surface 110 of the punch 11, is inspected. However, in this invention, in addition to or in addition to the damage D, for example, wear, cracks, or so-called character embedding may be inspected. Depending on the wear state of the tableting surface 110 of the punch 11, adhesion of the formulation may occur, which may cause a production problem. In addition, some tablets have a marking, and depending on the shape of the marking, the formulation may adhere to the marking on the tableting surface 110 of the punch 11, for example, the number "1.5" in Figures 14 and 15, causing so-called character embedding. In this invention, wear, cracks, and so-called character embedding can be inspected.

[0110] Furthermore, in the above embodiment, the imaging device 1 including the mounting member 12, the illumination member 13, the imaging member 14, and the moving mechanisms 15 and 16 is one set, and the learning device 2 and the determination device 3 are one set. However, in the present invention, the imaging device 1 may be provided in a plurality of sets, and the learning device 2 and the determination device 3 may be provided in one set.

[0111] [Note] The contents described in the above-mentioned embodiments can be understood, for example, as follows.

[0112] (1) An imaging device 1 for a tableting mold inspection system, A mounting member 12 on which the tableting die 11 is mounted; An illumination member 13 for illuminating a predetermined surface 110 of the tableting die 11; an imaging member 14 for imaging the predetermined surface 110 of the tableting die 11 illuminated by the illumination member 13; a moving mechanism 15, 16 for moving at least one of the mounting member 12, the illumination member 13, and the imaging member 14; Equipped with The imaging member 14 images the predetermined surface 110 of the tableting die 11 during at least one movement process of the moving mechanisms 15 and 16, and generates video data D1. It is characterized by:

[0113] As a result, the imaging device 1 for a tableting mold inspection system in this embodiment does not require expensive equipment such as an electron beam irradiation device and a wavelength dispersive X-ray detector, as in the non-destructive film thickness measurement method using electron beam irradiation of Patent Document 1, so an inexpensive imaging device 1 for a tableting mold inspection system can be provided.

[0114] Moreover, in the imaging device 1 for the tableting die inspection system according to this embodiment, the imaging member 14 captures the tableting surface 110 of the pestle 11 as a video and generates video data D1 while the rotating mechanism 15 rotates the tableting surface 110 of the pestle 11 once in 10 seconds and while the elevating mechanism 16 raises and lowers the illumination member 13 twice in 10 seconds, i.e., during one imaging process. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment inspects the appearance of the tableting surface 110 of the pestle 11 based on the video data D1, and therefore can inspect the tableting surface 110 of the pestle 11 with high accuracy compared to existing tableting die inspection devices that inspect the appearance of a specific surface of a tableting die based on still image data. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment can grasp and confirm the appearance condition of the tableting surface 110 of the pestle 11 with high accuracy and manage the pestle 11. In this way, the imaging device 1 for the tableting mold inspection system in this embodiment can, for example, utilize AI image processing, and without the need for expensive equipment such as a wavelength dispersive X-ray detector, can grasp the condition of the tableting surface 110 of the pestle 11, which is a tableting mold, from an image of the tableting surface 110 of the pestle 11 obtained by imaging with a camera, i.e., the imaging member 14.

[0115] (2) The moving mechanisms 15 and 16 are A rotation mechanism 15 that rotates the mounting member 12 around a rotation axis V; a reciprocating mechanism 16 that reciprocates the illumination member 13 in the direction of the rotation axis V of the rotation mechanism 15 between the imaging member 14 and the predetermined surface 110 of the tableting die 11; having It is characterized by:

[0116] As a result, the imaging device 1 for a tableting mold inspection system in this embodiment does not require expensive equipment such as an electron beam irradiation device and a wavelength dispersive X-ray detector, as in the non-destructive film thickness measurement method using electron beam irradiation of Patent Document 1, so an inexpensive imaging device 1 for a tableting mold inspection system can be provided.

[0117] Moreover, the imaging device 1 for the tableting die inspection system according to this embodiment can grasp and confirm the external appearance of the tableting surface 110 of the punch 11 with high precision, and can manage the punch 11.

[0118] (3) The illumination member 13 has an annular light irradiation portion 130 centered on the rotation axis V of the rotation mechanism 15. It is characterized by:

[0119] As a result, the imaging device 1 for the tableting mold inspection system in this embodiment can evenly irradiate light onto the circular tableting surface 110 of the punch 11, making it possible to inspect the tableting surface 110 of the punch 11 with high accuracy.

[0120] (4) The moving mechanisms 15 and 16 are A rotation mechanism 15 that rotates the mounting member 12 about a rotation axis V in the vertical direction; a vertical reciprocating mechanism 16 that reciprocates the illumination member 13 up and down in the direction of the rotation axis V of the rotation mechanism 15 between the imaging member 14 and the predetermined surface 110 of the tableting die 11; having It is characterized by:

[0121] As a result, the imaging device 1 for a tableting mold inspection system in this embodiment does not require expensive equipment such as an electron beam irradiation device and a wavelength dispersive X-ray detector, as in the non-destructive film thickness measurement method using electron beam irradiation of Patent Document 1, so an inexpensive imaging device 1 for a tableting mold inspection system can be provided.

[0122] Moreover, the imaging device 1 for the tableting die inspection system according to this embodiment can grasp and confirm the external appearance of the tableting surface 110 of the punch 11 with high precision, and can manage the punch 11.

[0123] (5) The illumination member 13 has an annular light irradiation portion 130 centered on the rotation axis V of the rotation mechanism 15. It is characterized by:

[0124] As a result, the imaging device 1 for the tableting mold inspection system in this embodiment can evenly irradiate light onto the circular tableting surface 110 of the punch 11, making it possible to inspect the tableting surface 110 of the punch 11 with high accuracy.

[0125] (6) The tableting die 11 has several types of tableting dies 11A, 11B, and 11C, each having a different length L1, L2, or L3 in a direction facing the imaging member 14, The imaging member 14 is fixed and An incident surface 140 of the imaging member 14, on which light from the predetermined surfaces 110 of the tableting dies 11, 11A, 11B, and 11C is incident, faces the predetermined surfaces 110 of the tableting dies 11, 11A, 11B, and 11C, The mounting member 12 has a distance maintaining mechanism 127 for maintaining a constant distance between the incident surface 140 of the imaging member 14 and the predetermined surfaces 110 of several types of the tableting dies 11A, 11B, and 11C. It is characterized by:

[0126] As a result, even if the lengths L1, L2, and L3 of the punches 11, 11A, 11B, and 11C in the direction facing the imaging member 14 are different, the imaging device 1 for the tableting die inspection system according to this embodiment can maintain a constant distance WD between the lower end surface 140 of the opposing imaging member 14 and the tableting surfaces 110 of several types of pestles 11, 11A, 11B, and 11C having different lengths L1, L2, and L3 by the distance maintaining mechanism 127. As a result, the imaging device 1 for the tableting die inspection system according to this embodiment can adjust the focus of the imaging member 14 to the tableting surfaces 110 of several types of pestles 11, 11A, 11B, and 11C having different lengths L1, L2, and L3, and can inspect the tableting surfaces 110 of several types of pestles 11, 11A, 11B, and 11C having different lengths L1, L2, and L3 with high accuracy.

[0127] (7) A learning device 2 for a tableting mold inspection system, The system includes a creation unit 20, a learning unit 21, and a generation unit 22, The creation unit 20 writes information about the tableting die 11 into the video data D1 obtained by the imaging member 14 of the imaging device 1 for the tableting die inspection system of the present invention to create learning video data D2, The learning unit 21 uses a learning algorithm to learn the state of the tableting die 11 from the group of learning video data D2 created by the creation unit 20, The generation unit 22 generates learned video data D3 for determining whether or not the tableting die 11 needs to be replaced based on the state of the tableting die 11 learned by the learning unit 21. Characterized in that

[0128] As a result, the learning device 2 for the tableting die inspection system according to this embodiment can obtain high-precision learning video data D2 by the creation unit 20. Furthermore, the learning device 2 for the tableting die inspection system according to this embodiment can learn the state of the tableting surface 110 of the punch 11 with high precision from a group of high-precision learning video data D2 by the learning unit 21. Furthermore, the learning device 2 for the tableting die inspection system according to this embodiment can generate learned video data D3 for determining whether or not the punch 11 needs to be replaced with high precision based on the state of the tableting surface 110 of the punch 11 learned with high precision by the generation unit 22.

[0129] (8) A judgment device 3 for a tableting mold inspection system, comprising: The apparatus includes a setting unit 31 and a determination unit 32. The setting unit 31 sets a condition for determining whether or not the tableting die 11 needs to be replaced, and extracts the learned video data D3 based on the condition from a group of learned video data D3 generated by the generation unit 22 of the learning device 2 for the tableting die inspection system of the present invention, The judgment unit 32 compares the video data D1 obtained by the imaging member 14 of the imaging device 1 for the tableting die inspection system of the present invention with the learned video data D3 extracted by the setting unit 31 to judge whether or not the tableting die 11 needs to be replaced. It is characterized by:

[0130] As a result, the determination device 3 for a tableting die inspection system according to this embodiment can extract learned video data D3 based on the necessity condition set by the setting unit 31 with high accuracy. Also, the determination device 3 for a tableting die inspection system according to this embodiment can determine with high accuracy by the determination unit 32 whether or not replacement of the punch 11 is necessary.

[0131] (9) An imaging device 1 for the tableting die inspection system of the present invention; A learning device 2 for the tableting die inspection system of the present invention; A judgment device 3 for the tableting die inspection system of the present invention; Equipped with It is characterized by:

[0132] As a result, the tableting die inspection system S according to this embodiment is inexpensive. Moreover, the tableting die inspection system S according to this embodiment can obtain high-precision video data D1, high-precision learning video data D2, and high-precision learned video data D3, and can determine with high precision whether or not the punch 11 needs to be replaced. In this way, the tableting die inspection system S according to this embodiment can grasp the state of the tableting surface 110 of the pestle 11 by an image of the tableting surface 110 of the pestle 11, which is a tableting die, obtained by imaging with a camera, i.e., an imaging member 14, using, for example, AI image processing, without requiring expensive equipment such as a wavelength dispersive X-ray detector. [Explanation of symbols]

[0133] 1. Imaging device for tablet mold inspection system 100 Panels 101 Frame 102L Left space 102R Right side space 103 Partition Panel 104 Hinge 105 Peephole 106 Operation touch panel 107 Display 108 Floor 1080 Legs 109 Handle 11, 11A, 11B, 11C Pestles (tablet dies, die for tablet press) 110 Tableting surface (specified surface) 111 Placement surface 12. Mounting member 12U upper mounting member 12D Lower support member 120 Placement surface 121 Guide protrusion 122 Guide recess 123 Adjustment screw 124 Adjustment screw hole 1252, 1253 Spacer 126 Slit 127 Distance maintenance mechanism 128 Rotating shaft 1291, 1292, 1293, 1294 Landmarks 13 Lighting materials 130 Light irradiation unit 14 Imaging materials 140 Bottom end surface (incident surface) 141 Camera Department 142 Lens section 143 First mounting bracket 15 Rotation mechanism (movement mechanism) 151 First Support Table 152 Second Support Table 153 Rotational force transmission section 154 Bearing support 155 First timing pulley 156 Second timing pulley 157 Timing belt 16 Lifting mechanism (moving mechanism, up and down reciprocating mechanism) 160 Crank mechanism 161 Rotating disc 162 Lifting section 163 Conversion Rod 164 Rail 165 Slider 166 Lower connecting pin 167 Upper connecting pin 168 Second mounting bracket 17 Memory section 2. Learning device for tableting die inspection system 20 Creation Department 21 Learning Department 22 Generation part 23 Memory section 3. Judgment device for tableting die inspection system 31 Setting section 32 Judgment section 33 Storage section C2, C3 gap D Scar D1 Video data D2 Learning video data D3 Trained video data L1, L2, L3 Length M1 First motor M2 Second motor M10, M20, M30 recording media NW1, NW2 networks R Clockwise rotation R1 Clockwise rotation S Tablet mold inspection system ST Lifting stroke UD Up and down reciprocating motion V Rotation Axis WD Distance φ1, φ2, φ3, φ4 diameter

Claims

1. 1. A tableting die inspection system comprising: The system includes an imaging device and a learning device, The imaging device includes: A mounting member for mounting a tableting die; An illumination member for illuminating the tableting surface of the tableting die; an imaging member for imaging the tableting surface of the tableting die illuminated by the illumination member; a moving mechanism that moves at least one of the mounting member, the illumination member, and the imaging member; Equipped with The moving mechanism includes: A rotation mechanism that rotates the mounting member around a vertical axis; a vertical reciprocating mechanism that reciprocates the illumination member up and down in the direction of the rotation axis of the rotation mechanism between the imaging member and the tableting surface of the tableting die; having a predetermined number of rotations of the rotation mechanism and a predetermined number of lifting and lowering of the up-down reciprocating mechanism are defined as one movement process; The imaging member images the tableting surface of the tableting die during at least one of the moving steps of the moving mechanism to generate video data; The learning device includes: The system includes a creation unit, a learning unit, and a generation unit, The creation unit generates learning video data including information of the tableting die showing at least one of scratches, wear, cracks, or embedded characters on the tableting surface in the video data obtained by the imaging member, The learning unit uses a learning algorithm to learn at least one state of scratches, wear, cracks, or embedded characters on the tableting surface from the group of learning video data, The generation unit recognizes at least one of scratches, wear, cracks, and embedded characters on the tableting surface based on the learning result by the learning unit, and generates learned video data for determining whether or not the tableting die needs to be replaced. A tableting mold inspection system characterized by:

2. A tableting mold inspection system as claimed in claim 1, Further comprising a determination device, The determination device includes: A setting unit and a determination unit are provided, The setting unit sets a condition for whether or not to replace the tableting die, and extracts the trained video data based on the condition from the group of trained video data, The determination unit compares the video data obtained by the imaging member with the learned video data extracted by the setting unit to determine whether or not the tableting die needs to be replaced. A tableting mold inspection system characterized by:

3. A tableting mold inspection system as claimed in claim 1, The information on the tablet press further includes at least one of the number of tablet presses, tablet press pressure, environmental conditions such as temperature and humidity, tablet material and hardness, or a tablet press using the tablet press. A tableting mold inspection system characterized by:

Images