JP2008224427A - Flaw inspection device of filling container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a flaw inspection device of a filling container capable of markedly reducing wrong determination of the flaws of a thermal contact bonding seal part, even when the thickness of the thermal contact bonding seal part of the filling container is nonuniform. <P>SOLUTION: The flaw inspection device is equipped with a filling container rotating and a moving means for intermittently transferring the filling container 33; an infrared heater 38 for projecting infrared rays on the filling container 33 transferred to an inspection position; an infrared photoelectric camera 39 for imaging the infrared rays transmitted through the filling container 33; and an imaging means 36, having the infrared filter 40 provided to a light path of infrared rays and an image processing means 42 for comparing actual thing perspective image data 45b, obtained by extracting only the part of a filled material 32 with a reference perspective image data 45c, which is obtained by extracting only the part of the filled material 32 related to the standard sample product of the filling container 33 to determine the presence of the abnormality of the thermal contact bonding of a thermal contact bonding seal part 33a. The infrared filter 40 selectively transmits infrared rays of a wavelength band that is easier to be transmitted through the atmosphere and the filling container 33 than through the filled material 32. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a defect inspection apparatus for a filling container that performs defect inspection of a thermocompression-bonding seal portion of a filling container filled with a gel-like filling such as toothpaste and paint.

  A conventional defect determination apparatus for an object to be inspected includes an infrared heater that emits infrared light to an object to be inspected composed of an exterior material filled with a gel-like filling, and a transmission that passes through the object to be inspected. An infrared light camera that picks up infrared light, an image processing device that processes an image of transmitted infrared light picked up by the infrared light camera, and image comparison means are provided.

  Here, the exterior material of the object to be inspected is formed of a resin tube, and the end portion of the resin tube is thermocompression-bonded in the previous step. Then, the image comparison means includes a reference appearance image and a reference filling image obtained by imaging infrared light transmitted through the thermocompression seal portion of the standard sample product of the object to be inspected, and a thermocompression seal of the defect determination actual product of the object to be inspected. Compared with the actual product appearance image and the actual product filling image obtained by imaging the infrared light transmitted through the part, the thermocompression seal part of the inspected object whose comparison result did not match the standard sample product is defective (For example, refer to Patent Document 1).

JP 2006-64389 A

  However, in the conventional defect determination apparatus for an object to be inspected, when the thickness of the thermocompression-bonding seal portion is not uniform because of the formation of a mesh-like uneven shape, the in-product filling image is removed. The pattern resulting from the unevenness | corrugation of a power thermocompression seal part may remain. Therefore, the inspection accuracy due to the image acquisition of the thermocompression-bonded seal part is not sufficient, and there is a case where an erroneous determination is made that the object to be inspected is a defective product even though it is a normal product, or a defective product even though it is a defective product. there were.

  The present invention has been made to solve the above-mentioned problems, and improves the inspection accuracy by image acquisition using an infrared photoelectronic camera of the thermocompression-bonded seal portion, and the thickness of the thermocompression-bonded seal portion of the filling container is reduced. An object of the present invention is to obtain a defect inspection apparatus for a filled container that can remarkably reduce the erroneous determination of the presence or absence of a defect in a thermocompression-bonded seal portion even when it is not uniform.

  The present invention is a filling container defect inspection apparatus for inspecting defects in a thermocompression seal portion of a filling container filled with a filling material, wherein the filling container carried into the carry-in completion position is inspected at an inspection position, a non-defective product carrying-out position, Infrared light heater for projecting infrared light to a part including a filling container conveyance means having a filling container rotating and moving means for intermittently transferring to a defective product carrying-out position and a thermocompression-bonding seal portion of the filling container transferred to the inspection position Infrared light electronic camera that picks up infrared light that has passed through the filling container, Infrared light filter provided in the optical path until the infrared light projected from the infrared light heater reaches the infrared light electronic camera Infrared photoelectron image data for the actual sample fluoroscopic image data obtained by extracting only the portion of the filling material from the fluoroscopic image captured by the imaging means and the infrared photoelectronic camera, and the standard sample product of the filling container having a normal thermo-compression seal portion in advance. Image processing means for determining the presence or absence of thermocompression-bonding abnormality of the thermocompression-bonding seal part by comparing with reference fluoroscopy image data obtained by extracting only the portion of the filling from the fluoroscopic image captured by the infrared filter. Selectively transmits infrared light in a wavelength band that is easier to transmit in the atmosphere and in the filling container than in the filling.

  According to this invention, since the infrared light filter is provided in the optical path until the infrared light projected from the infrared light heater reaches the infrared light electronic camera, the thermocompression-bonding seal portion of the filling container Even if the thickness is not uniform, it is possible to extract the actual fluoroscopic image data from which the influence due to the nonuniform thickness is removed from the fluoroscopic image captured by the infrared photoelectronic camera. Therefore, the inspection accuracy of the thermocompression bonding state of the thermocompression seal portion can be improved.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view of a defect inspection apparatus for a filled container according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is an enlarged front view of the periphery of the filling container pressure welding machine portion in FIG. 1, and FIG. 6 is a first embodiment of the present invention. FIG. 7 is a diagram for explaining a method for determining the presence / absence of a defect in a filling container by the image processing means of the defect inspection apparatus for the filling container, and FIG. It is the upper side figure to which the actual article perspective image of the object was expanded. FIG. 8 is a top view of reference fluoroscopic image data to be compared with the actual fluoroscopic image in the filling container defect device according to the first embodiment of the present invention, and FIG. 9 is a defect of the filling container according to the first embodiment of the present invention. It is a top view of the thermocompression-bonding seal part of the filling container inspected by the apparatus. FIG. 10 is a view showing the relationship between the infrared light transmittance and the wave number of the filling filled in the filling container of the object to be inspected by the defect inspection apparatus for a filling container according to Embodiment 1 of the present invention; FIG. 11 is a diagram showing a relationship between the transmittance of infrared light and the wave number of the filling container of the object to be inspected by the filling container defect inspection apparatus according to Embodiment 1 of the present invention, and FIG. The figure which shows the relationship between the transmittance | permeability of the infrared light of the infrared filter used for the defect inspection apparatus of the filling container which concerns on Embodiment 1, and a wave number, FIG. 13: The filling container which concerns on Embodiment 1 of this invention It is a sequential function chart for demonstrating the whole operation | movement of this defect inspection apparatus.
In FIG. 1, for convenience of explanation, the front panel, the columns on the front panel side, and the peripheral wall portion are omitted.
10 and FIG. 11, the relationship between the infrared light transmittance and the wave number of the infrared filter shown in FIG.

  1, 2, and 4, the filling container defect inspection apparatus 1 </ b> A includes a housing 2, a filling container transport unit 11 </ b> A, an imaging unit 36, an image processing unit 42, and a drive control unit 47, a monitor 41. Means 51, loading / unloading control means 61, filling container pressure contact mechanism 71, and filling container loading / unloading detection means 81 are provided.

The housing 2 is formed in a hollow rectangular parallelepiped shape and is erected, and the front surface is closed with a front panel 2a as shown in FIG.
And the control apparatus 41 is arrange | positioned under the inside of the housing | casing 2, and the shelf board 3 is being fixed to the inner wall of the housing | casing 2 of the upper part. In addition, a pair of support columns 6a and 6b are arranged to face each other with a later-described carry-in conveyor 12 interposed therebetween, and a pair of support columns 6c and 6d are arranged to face each other with a later-described carry-out conveyor 13 interposed therebetween. It is erected and fixed on the upper surface of the shelf board 3. And the intermediate support plate 4 is supported so that it may become horizontal at the upper end of each support | pillar 6a-6d.

Further, the filling container transport unit 11A includes a carry-in conveyor 12 as a carry-in means, a carry-out conveyor 13 as a non-defective product carry-out means, a guide wall 14, a filling container rotation moving means 15, and a fixed table 20.
Then, one end of the carry-in conveyor 12 is disposed outside the housing 2, and the other end side is inserted into the housing 2 from one side surface of the housing 2, and circulates between both ends. In addition, the carry-out conveyor 13 has one end disposed within the housing 2 at a predetermined distance from the other end of the carry-in conveyor 12, and the other end extending outward from the other side surface of the housing 2. Circulating between both ends.

At this time, the carry-in conveyor 12 and the carry-out conveyor 13 are arranged with their main surfaces horizontal, and the carry-out conveyor 13 is arranged on an extension line in the length direction of the carry-in conveyor 12. In addition, as for the carry-in conveyor 12 and the carry-out conveyor 13, each intermediate part is supported by each of the both sides | surfaces of the housing | casing 2. As shown in FIG. Also, one end side of the carry-in conveyor 12 and the other end side of the carry-out conveyor 13 are supported by two conveyor support arms 5a and 5b attached so as to extend from both side surfaces of the case 2 to the outside of the case 2, respectively. Has been.
In addition, guide walls 14 are provided so as to face each other so as to vertically protrude from the main surfaces of the carry-in conveyor 12 and the carry-out conveyor 13 along both edges of the carry-in conveyor 12 and the carry-out conveyor 13.

  Then, the carry-in conveyor 12 moves the inspected object 31 filled with the filling 32 into the filling container 33 from the outside of the housing 2, and the carry-out conveyor 13 removes the inspected object 31 from the inside of the housing 2. It is circulated in the direction of moving outward.

  The filling 32 is, for example, a gel-like substance such as toothpaste, cosmetics, paint, food, etc., and the filling container 33 is, for example, a resin-made flexible tube having an opening at one end and the other end heated in advance. Sealing is performed by pressure bonding, and a thermocompression sealing portion 33a is formed as shown in FIG. 2, and the opening of the filling container 33 is sealed with a cap 34 in advance.

The distance between the guide walls 14 is adjusted to the maximum width of the inspected object 31 because they are arranged to face each other along the edges of the carry-in conveyor 12 and the carry-out conveyor 13.
The object to be inspected 31 is placed on the carry-in conveyor 12 on the outer side of the housing 2 with the thermocompression-bonding seal portion 33a of the filling container 33 facing the rear end of the carry-in conveyor 12 in the traveling direction. While being maintained by the guide wall 14, it is sequentially transferred into the housing 2.

The filling container rotation moving means 15 has a motor 16, an encoder 16a for detecting the rotation angle of the motor 16, an intermittent rotation drive mechanism 17, and a filling container movement holding plate 18A.
The motor 16 is fixed to the lower surface of the intermediate support plate 4, and the rotation speed of the motor 16 can be varied by controlling an inverter (not shown) attached integrally.
The intermittent rotation drive mechanism 17 is also fixed to the lower surface of the intermediate support plate 4 and has a rotation shaft 17a that can rotate about the vertical axis. The intermittent rotation drive mechanism 17 converts the torque so that the rotation of the continuously rotating motor 16 repeats rotation and stop at a constant period. That is, the rotation around the rotation shaft 17a is intermittently performed at a constant cycle. And the front-end | tip of the rotating shaft 17a is arrange | positioned between the carrying-in conveyor 12 and the carrying-out conveyor 13. FIG.

As shown in FIG. 2, the container storage groove 19 that opens toward the outside of the filling container movement holding plate 18 </ b> A is provided in the vicinity of the center from the outer peripheral portion of the filling container movement holding plate 18 </ b> A. It is formed with a predetermined width. At this time, the container storage grooves 19 are formed so that the respective openings are directed outward in the radial direction around the filling container moving holding plate 18A and arranged at a pitch of 90 degrees in the circumferential direction. Further, the inner peripheral shape of the container storage groove 19 corresponds to the outer shape of the filling container 33.
The rotating shaft 17a is fixed to the center of the filling container moving / holding plate 18A so that its axial direction is perpendicular to the filling container moving / holding plate 18A. As a result, the filling container movement holding plate 18A is intermittently rotated around the rotation shaft 17a in conjunction with the intermittent rotation of the rotation shaft 17a.

In FIG. 3, the fixed table 20 has a disk part 21 and a peripheral wall part 22.
The disk portion 21 has two cutouts 21a and 21b, a drop hole 21c as a defective product carrying means, and an infrared light transmitting window 21d formed at intervals of 90 degrees in the circumferential direction. The notches 21a and 21b are arranged on the same straight line, and the drop hole 21c and the infrared light transmitting window 21d are arranged on the same straight line.
Each of the notches 21a and 21b corresponds to the outer peripheral shape of the end portions of the carry-in conveyor 12 and the carry-out conveyor 13 and has a predetermined width from the outer periphery of the disk portion 21 to the vicinity of the center so as to be larger than the filling container 33. The disk portion 21 is cut out.

The infrared light transmitting window 21d is formed by cutting out from the outer periphery of the disk portion 21 to a predetermined length and a predetermined width in the radial direction.
Further, the peripheral wall portion 22 is formed so as to protrude vertically upward from the disc portion 21 along the outer periphery of the disc portion 21. That is, the peripheral wall portion 22 is formed so as to surround the filling container moving holding plate 18A. At this time, the formation of the peripheral wall portion 22 is omitted in the portion where the notches 21a and 21b are formed. Note that the peripheral wall portion 22 preferably has a low friction coefficient and high wear resistance. For example, high density polyethylene can be used as a material for forming the peripheral wall portion 22.

  As shown in FIG. 4, the disk portion 21 is supported by a plurality of auxiliary support pillars 8 with the main surface being horizontally aligned. As shown in FIG. 2, the filling container moving holding plate 18 </ b> A is provided on the disk portion 21. They are arranged on the top surface with their centers aligned. At this time, as shown in FIG. 3, the other end side of the carry-in conveyor 12 and the one end side of the carry-out conveyor 13 are inserted and arranged in the notches 21a and 21b having openings on the same straight line.

In addition, as FIG. 3 shows, the insertion site | part to the notch 21a of the carrying-in conveyor 12 is made into the carrying-in completion position 12a, and the insertion site | part to the notch 21b of the carrying-out conveyor 13 is made into the non-defective article carrying-out position 13a. Further, the drop position 20a with the position of the drop hole 21c as the defective product carrying position, the infrared light transmission window 21d, and the surface portion of the disk portion 21 between the infrared light transmission window 21d and the center of the disk portion 21 are inspected positions. 20b.
The omitted portion of the peripheral wall portion 22 on the carry-in conveyor 12 side becomes a carry-in opening portion 22a for carrying the object 31 to the carry-in completion position 12a, and the omitted portion of the peripheral wall portion 22 on the carry-out conveyer 13 side is the covered portion. It is a carry-out opening 22b for carrying the inspection object 31 out of the housing 2 from the non-defective product carry-out position 13a.

  In the filled container transport means 11A configured as described above, when the filled container movement holding plate 18A is rotated counterclockwise about the rotation shaft 17a, the container storage groove 19 is moved from the carry-in completion position 12a to the inspection position 20b. Circulation movement is performed so as to return to the carry-out position 13a, the drop position 20a, and the carry-in completion position 12a.

  At this time, the inspected object 31 that has passed through the carry-in opening 22a is sandwiched between both side walls that form the container storage groove 19 with the cap 24 abutting against the bottom of the container storage groove 19 disposed at the top of the carry-in completion position 12a. Stop in the state. Then, the filling container movement holding plate 18A is rotated 90 degrees counterclockwise, and the object to be inspected 31 is transferred with the thermocompression sealing part 33a facing the outside of the filling container movement holding plate 18A. At this time, the object to be inspected 31 is moved so that the thermocompression-bonding seal portion 33a is located above the infrared light transmission window 21d and is disposed at the inspection position 20b.

  Further, when the filling container moving holding plate 18A is rotated 90 degrees counterclockwise, the inspected object 31 is moved to the non-defective product unloading position 13a. At this time, if the carry-out conveyor 13 is driven and its movement is not restricted by the exit shutter 62b, the inspection object 31 is transferred to the outside of the housing 2 by the carry-out conveyor 13.

  In addition, when the inspected object 31 is not transferred to the outside of the housing 2 and is disposed at the non-defective product unloading position 13a, when the filling container moving holding plate 18A is rotated 90 degrees counterclockwise, the inspected object 31 is moved to the drop position 20a and is free-falling from the drop hole 21c. A waste storage container 29 is disposed below the drop hole 21 c, and the inspected object 31 transferred to the drop position 20 a is stored in the waste storage container 29. As described above, the filling container moving / holding plate 18 </ b> A is configured to transfer the inspected object 31 by repeating intermittent rotation of the inspected object 31 by 90 degrees counterclockwise.

  In addition, the container storage groove 19 that has stored the object 31 to be inspected at the drop position 20a again returns to the carry-in completion position 12a of the carry-in conveyor 12 when the filling container movement holding plate 18A is further rotated 90 degrees counterclockwise. The object 31 to be inspected newly placed in the corresponding position can be stored. Therefore, the filling container moving holding plate 18A is intermittently carried in continuously, and the object to be inspected 31 stored in the container storing groove 19 can be sequentially transferred to the inspection position 20b, the non-defective product unloading position 13a, and the dropping position. Yes.

  As shown in FIG. 1, the monitoring monitor unit 51 includes an operation panel 52 that is a man-machine interface device, a display 53 that serves as a display unit, and the like, and is housed in an upper portion of the housing 2. Then, the operation panel 52 can perform various setting operations such as an interval time of rotation in the intermittent rotation of the filling container moving holding board 18A via the motor 16 and the intermittent rotation driving mechanism 17 and operation command operations of various devices. It has become. The display 53 can monitor the operation state of the intermittent rotation drive mechanism 17 and the like.

Further, as shown in FIG. 1, the carry-in / out control means 61 includes an opening / closing drive mechanism 63 having an entrance shutter 62a, an exit shutter 62b, and a pair of cylinders 63a that move up and down in the vertical direction.
The cylinder 63a is attached to the support piece 9 fixed to the inner wall on both side surfaces of the housing 2, and an arm 63b is extended from each of the cylinders 63a. The distal ends of the arms 63b are respectively an entrance shutter 62a and an exit shutter. It is being fixed to each upper end of 62b.
At this time, the entrance shutter 62a and the exit shutter 62b are fixed to the arm 63b so as to be reciprocally movable in the vertical direction by driving the cylinder 63a.

  The entrance shutter 62a and the exit shutter 62b are arranged so that the carry-in opening 22a and the carry-out opening 22b can be opened and closed. By opening and closing the loading opening 22a by the entrance shutter 62a, it is possible to restrict and permit loading of the inspection object 31 to the loading completion position 12a, and by opening and closing the loading opening 22b by the exit shutter 62b, It is possible to restrict and permit the inspection object 31 to be transferred out of the non-defective item discharge position 13a to the outside of the housing 2.

  The filling container carry-in / out detection means 81 has a carry-in detection sensor part 81a and a carry-out detection sensor part 81b, as shown in FIG. The carry-in detection sensor unit 81a includes a projector 82a and a light receiver 83a, and the carry-out detection sensor unit 81b includes a projector 82b and a light receiver 83b.

  In each of the projector 82a and the light receiver 83a, the light projected from the projector 82a passes through the surface of the carry-in conveyor 12 near the carry-in opening 22a by the light receiver 83a. It is fixed to receive light. Each of the light projector 82b and the light receiver 83b passes light on the surface of the carry-out conveyor 13 in the vicinity of the carry-out opening 22b, and the light projected from the light projector 82b on each of the above-mentioned support columns 6c and 6d. It is fixed to receive light.

The inspected object 31 transferred on the carry-in conveyor 12 blocks the light projected by the light projector 82a, so that a carry-in signal is output from the light receiver 83a.
At this time, as described later, the entrance shutter 62a closes the carry-in opening 22a when a carry-in signal is transmitted.
Similarly, when the inspected object 31 transferred by the carry-out conveyor 13 blocks the light projected by the light projector 82b, a carry-out signal is outputted from the light receiver 83b. As will be described later, the outlet shutter 62b closes the carry-out opening 22b when a carry-out signal is transmitted.

Further, as shown in FIG. 5, the filling container pressure contact mechanism 71 includes a support arm 72, a swing arm 73, a pin 74, a rolling roller 75, and a pressure contact spring 76.
The support arm 72 is formed in a rod shape, and a lower end thereof is disposed between the upper side of the filling container moving holding plate 18 </ b> A and the intermediate support plate 4, and an upper end is fixed to the intermediate support plate 4.
The swing arm 73 is formed in a rod shape, and an intermediate portion thereof is pivotally supported by one end of the support arm 72.

A rolling roller 75 is disposed at one end of the swing arm 73, and a pressure contact spring 76 is stretched between the other end of the swing arm 73 and the intermediate portion of the support arm 72. .
At this time, the rolling roller 75 is disposed in contact with the inspection object 31 disposed at the inspection position 20b. The pressing spring 76 is arranged such that the biasing force acts on the other end side of the swing arm 73 on the side opposite to the fixed table 20, and the rolling roller 75 is pressed and biased toward the fixed table 20. It has become so. Further, the rotating shaft of the rolling roller 75 is aligned with the radial direction of the fixed table 20.

From the above state, after the object to be inspected 31 is newly carried into the carry-in completion position 12a, when the filling container moving holding plate 18A is rotated 90 degrees counterclockwise, the object to be inspected 31 is moved to the inspection position 20b. The rolling roller 75 rolls along the surface of the filling container 33, and the swing arm 73 swings according to the thickness of the filling container 33 with the pin 74 as the swing center.
When the object to be inspected 31 is stopped at the inspection position 20b, the rolling roller 75 presses the filling container 33.

The imaging means 36 includes a support rod 37, an infrared light heater 38, an infrared light electronic camera 39, and an infrared light filter 40.
The support bar 37 is erected so as to avoid the installation area of the fixed table 20 and extend from the upper surface of the shelf board 3 to the upper part in the housing 2 with the length direction aligned with the vertical direction.
The infrared light heater 38 is supported by the support rod 37 below the infrared light transmission window 21d, and the infrared light electronic camera 39 is supported above the infrared light transmission window 21d. Further, the infrared light filter 40 is supported by the support rod 37 so as to be disposed between the infrared light transmission window 21 d and the infrared light electronic camera 39.
The infrared light projected from the infrared light heater 38 passes through the infrared light transmission window 21 d and the infrared light filter 40 and reaches the infrared electronic camera 39. That is, the infrared light filter 40 is disposed in the optical path of the infrared light projected from the infrared light heater 38.

  From the infrared light heater 38, light in a predetermined wavelength region including the infrared light region is projected. Infrared light is generally classified into near-infrared light, mid-infrared light, and far-infrared light according to the wave number per cm, which is the reciprocal of the wavelength or wavelength converted to cm.

Near-infrared light is defined as infrared light having a wavelength of 0.8 to 3 μm (wave number 12,500 to 3,300 / cm), and mid-infrared light is wavelength 3 of infrared light. ˜6 μm (wave number 3,300-1,660 / cm) is defined, and far infrared light has a wavelength 6-1000 μm (wave number 1,660-10 / cm) among infrared light. Defined.
Moreover, among wavelengths of infrared light, a wavelength of 3 to 5 μm (wave number 3,300 to 2,000 / cm) and a wavelength of 8 to 14 μm (wave number 1,250 to 710 / cm) that have good transparency in the atmosphere. Each band is called an atmospheric window. As described above, the atmospheric window is divided into an atmospheric window in a short wavelength band (wavelength 3 to 5 μm) and an atmospheric window in a long wavelength band (wavelength 8 to 14 μm).

Each of the solid lines in FIGS. 10 to 12 shows the transmittance of infrared light of the filling material 32, the polyethylene used for the resin material of the filling container 33, and the infrared filter 40 as the wave number. .
In each figure, the horizontal axis (X axis) represents the wave number, and the vertical axis (Y axis) represents the infrared light transmittance.

FIGS. 10 and 11 show infrared light transmittances when the filling material 32 and the polyethylene have a predetermined thickness, respectively.
As the thickness of the filling 32 and polyethylene increases, the infrared light transmittance decreases. In FIGS. 10 and 11, the infrared light transmittance of the infrared filter is also shown by dotted lines.

  The infrared light transmission wavelength of the infrared light filter 40 is determined from the measurement result of the transmittance with respect to the wave number of the filling 32 and polyethylene. That is, as can be seen from FIG. 10 and FIG. 11, the infrared filter 40 is used selectively so as to transmit infrared light only in a wavelength band in which the filling 32 is difficult to transmit and easily passes through the filling container 33. It has been.

In addition, when there are a plurality of wavelength bands in which the filling material 32 is difficult to pass through and easily passes through the filling container 33, it is preferable to determine the transmission wavelength of the infrared filter 40 by targeting the wavelength band overlapping with the wavelength band of the atmospheric window. . In addition, the filling container 33 can be made in advance using a material that easily transmits infrared light in the wavelength region of the atmospheric window.
By aligning the wavelength transmission region of the infrared filter 40 with the atmospheric window, the infrared light transmitted through the thermocompression-bonding seal portion 33a can reach the infrared electronic camera 39 with the influence of the atmosphere suppressed as much as possible. it can.

  In addition, the infrared electronic camera 39 is used to detect a broadband wavelength including the infrared transmission wavelength region of the infrared filter 40.

Next, the determination of the presence / absence of a defect in the filling container 33 in the inspected object 31 by the image processing means 42 will be described with reference to FIGS.
When the thermocompression sealing part 33a of the filling container 33 is arranged above the infrared light transmitting window 21d as shown in FIG. 6, the infrared electronic camera 39 causes an object to be inspected around the thermocompression sealing part 33a. 31 perspective images are captured.
That is, the infrared light projected from the above-mentioned infrared light heater 38 is received by the infrared electronic camera 39 through the infrared light filter 40 after passing through the thermocompression sealing portion 33a of the filling container 33. A perspective image around the thermocompression-bonding seal portion 33a of the filling container 33 is taken.

  The fluoroscopic image of the periphery of the thermocompression-bonding seal portion 33a imaged by the infrared light electronic camera 39 is the infrared light from the material and thickness of the filling material 32, the material and thickness of the filling container 33 covering this, and the surrounding space portion. It is a shadow of the filling pad 32 and the filling container 33 caused by the difference in transmittance. The filling pad 32 with poor transmittance becomes a dark part, and the portion of the filling container 33 with good transmittance becomes brighter than the part of the filling pad 32. An image is being taken.

The captured fluoroscopic image is transmitted to the image processing means 42 described below.
The image processing means 42 makes the microprocessor 43 perform calculation control, analyze and acquire an image based on the fluoroscopic image from the infrared light electronic camera 39, and determine whether the thermocompression seal 33a of the filling container 33 is defective. A program memory 44 in which various programs for arithmetic control are stored, and a data memory 45 in which data necessary for the microprocessor 43 to determine the presence or absence of a defect in the thermocompression-bonding seal portion 33a are provided.

The program memory 44 stores an image acquisition program 44a, a filling fluoroscopic image extraction program 44b, and a fluoroscopic image comparison program 44c, and the microprocessor 43 executes the program in the following procedure.
First, when the microprocessor 43 reads the image acquisition program 44a, control is performed so that a fluoroscopic image of the thermocompression-bonding seal portion 33a photographed by the infrared electronic camera 39 is stored in the data memory 45 as captured image data 45a. As described above, the captured image data 45a is a shaded image in which the filling 32 and the filling container 33 are shaded.

  Next, the microprocessor 43 reads the filling fluoroscopic image extraction program 44b and displays the captured image data 45a in black when the degree of shading is higher than a predetermined threshold, and displays the other portions in white. That is, as shown in FIG. 7, the imaged image data 45a of the portion around the thermocompression-bonding seal portion 33a is represented by binary values of black and white with a predetermined threshold value and stored in the data memory 45 as the actual product fluoroscopic image data 45b. To control.

  Since the infrared light transmittances of the filling 32 and the filling container 33 are different, by setting the threshold value to an appropriate value, the actual product perspective image data 45b, for example, displays only the portion of the filling 32 darkly, Other parts including the container 33 can be displayed in white. That is, if the density of the filling filling 32 and the filling container 33 is digitized and the threshold is set to be between the concentrations of the filling filling 32 and the filling container 33, the portion of the filling filling 32 is displayed in black, and the filling container 33 is displayed. Other parts including it can be displayed in white. As a result, a portion of the filling 32 is extracted as the actual product perspective image data 45b.

  Then, when the microprocessor 43 reads the fluoroscopic image comparison program 44c, the actual fluoroscopic image data 45b stored in advance in the data memory 45 is compared with the reference fluoroscopic image data 45c described below, and the thermocompression-bonding seal portion 33a. Control is performed so as to determine whether or not there is a thermocompression-bonding failure.

  As shown in FIG. 8, the reference fluoroscopic image data 45c is the image data 45a captured by the infrared electronic camera 39 with respect to the standard sample product of the filling container 33 having the thermocompression-bonding seal portion 33a that is normally thermocompression bonded. Similarly to the actual product fluoroscopic image data 45b, when the degree of shading is smaller than a predetermined threshold value, it is displayed in black and the other part is displayed in white and stored in the data memory 45. That is, the reference fluoroscopic image data 45c is obtained by extracting only the filling material 32 filled in the filling container 33 of the sample product.

Here, advantages of using the infrared filter 40, the filling container pressure contact mechanism 71, and the filling container rotating / moving means 15 in the thermocompression-bonding seal portion 33a of the inspected object 31 will be described.
When the infrared light filter 40 is used, infrared light of only a wavelength band that hardly transmits the filling pad 32 and easily passes through the filling container 33 reaches the infrared electronic camera 39, so that the filling pad 32 is transmitted. The infrared light electronic camera 39 receives the infrared light intensity and the infrared light intensity transmitted through the filling container 33 with a large intensity difference. Accordingly, in the captured image data 45a, the difference in density between the filling filling 32 and the filling container 33 appears clearly, and the inspection accuracy when the defect determination of the inspection object 31 is performed is improved.

  On the other hand, when the infrared light filter 40 is not used, infrared light having a broadband wavelength projected from the infrared light heater is received. Therefore, the intensity of the infrared light transmitted through the filling material 32 and the filling container 33 are determined. The intensity difference from the intensity of the transmitted infrared light is not as great as when the infrared filter 40 is used. Therefore, the difference in shading between the filled pad 32 and the filled container 33 in the captured image data 45a is reduced.

  Furthermore, as shown in FIG. 9, the thermocompression-bonding seal portion 33a of the filling container 33 is intentionally formed with mesh-like irregularities 33b by a thermocompression jig (not shown) during the thermocompression bonding. In this case, the thick portion of the filling container 33 has a lower infrared light transmittance than the thin portion, and the captured image data 45a passes through the infrared light filter 40 and reaches the infrared light electronic camera 39 or not. Thus, there is a portion where the difference in density with the portion of the filling 32 is further reduced.

  In the picked-up image data 45a, the one using the infrared light filter 40 originally has a clear difference in shading between the filling pad 32 and the filling container 33. Even if the density difference between 32 and the filling container 33 is small, the density difference is still large, and the threshold value can be easily set so that the captured image data 45a can be identified from the filling 32 and the filling container 33. Can be binarized. That is, the striped pattern due to the shape of the unevenness 33b of the filling container 33 in the captured image data 45a can be easily removed, and the actual product perspective image data 45b from which the striped pattern has been removed is stored in the data memory 45. This facilitates comparison between the actual fluoroscopic image data 45b and the reference fluoroscopic image data 45c, and the inspection accuracy is improved as compared with the case where the infrared light filter 40 described below is not used, and whether there is a defect in the filling container 33. There is no misjudgment.

On the other hand, in the captured image data 45a, when the infrared light filter 40 is not used, the difference in density between the original filling material 32 and the filling container 33 is small, so the captured image data 45a is binarized and the actual product perspective image data 45b. The setting area of the threshold value when making is smaller.
Depending on the set value of the threshold value, the striped pattern of the thermocompression seal part 33a may remain in the actual product fluoroscopic image data 45b. And, if there is a thermocompression bonding failure in the thermocompression-bonding seal portion 33a and a shadow is produced due to the influence of the filling 32 flowing into the thermocompression-bonding failure portion, the shadow due to the striped pattern due to the unevenness of the thermocompression-bonding seal portion 33a A distinction cannot be made, and an accurate defect determination of the thermocompression-bonding seal portion 33a cannot be performed.
Therefore, it is effective to provide the infrared light filter 40.

  Further, when the filling container press-contact mechanism 71 is used, the rolling roller 75 presses the body portion of the filling container 33 when the inspected object 31 is moved to the inspection position 20b. Therefore, the filling container 33 is inspected for defects in a state in which stress is applied in a direction in which the thermocompression sealing portion 33a is peeled off from the filling 32. If the thermocompression bonding state of the thermocompression sealing part 33a is insufficient, the pressure applied by the rolling roller 75 is transmitted to the thermocompression sealing part 33a via the filling 32, and the thermocompression sealing part 33a is Peel off. And it becomes possible to detect abnormality of the thermocompression-bonding seal part 33a when the filling padding 32 flows into the peeled thermocompression-bonding seal part 33a.

Next, advantages of using the filling container rotation moving means 15 will be described.
If the filling 32 filled in the filling container 33 is slightly mixed with air bubbles adjacent to the thermocompression sealing part 33a, the infrared light transmittance of the portion of the filling 32 where the bubbles are mixed is It will be expensive. Therefore, in the picked-up image data 45a picked up by the infrared light electronic camera 39, the bubble portion is displayed as having a darkness similar to that of the filling container 33 having a high infrared light transmittance.
Therefore, even if there is no abnormality in the thermocompression-bonding state of the thermocompression-bonding seal portion 33a of the filling container 33, it may be determined that there is an abnormality in the thermocompression-bonding state of the thermocompression-bonding seal portion 33a.

That is, when air bubbles are mixed in the filling material 32, it is necessary to remove the air bubbles from the vicinity of the thermocompression-bonding seal portion 33a before inspecting whether there is an abnormality in the thermocompression-bonding state of the thermocompression-bonding seal portion 33a.
As described above, the inspected object 31 transferred to the carry-in completion position 12a is arranged with the thermocompression-bonding seal portion 33a facing away from the rotation center. That is, when the filling container moving holding plate 18A is rotated, the thermocompression-bonding seal portion 33a is transferred to the inspection position 20b in a state of being disposed on the front end side in the direction in which the centrifugal force is applied. At this time, the centrifugal force acting on the object to be inspected 31 acts in a direction that causes the heavy filling 32 to be directed toward the thermocompression seal portion 33a. Therefore, the lighter air bubbles are directed away from the thermocompression seal part 33a.
In other words, after the object to be inspected 31 is rotated and the air bubbles are mixed in by inspection, the thermocompression-bonding seal portion 33a is in good condition even though the thermocompression-bonding state is good. It is possible to prevent erroneous determination.

  The drive control means 47 controls various devices for inspecting the defect of the filling container 33, and is constituted by a programmable controller (sequencer) (not shown).

  Next, operation control for defect inspection determination of the filling container 33 performed by the programmable controller will be described with reference to FIG.

  The programmable controller is a kind of sequence program memory (not shown) for storing a sequence program, a control processing unit (not shown) for performing sequence control based on the sequence program, and a device memory for storing various input / output information. It has a plurality of state memories S1 to S10.

The control processing unit controls the transition of the state memory by closing the transition contact in response to the state of various input signals of the state memories S1 to S10 and the contents of the sequence program memory, and is activated (described later). The sequence programs corresponding to the state memories S1 to S10 are executed to drive various outputs.
The transition contact is electrically closed by the internal circuit of the programmable controller, and the control processing unit and any of the state memories S1 to S10 are connected by closing any of the transition contacts. Is done.
Further, hereinafter, it is defined that the state memories S1 to S10 are activated when the state memories S1 to S10 can be read by the control processing unit.

After the power supply of the defect inspection apparatus 1A for the filling container is turned on, the state memory S1 is stored in the thermocompression sealing part 33a of the filling container 33 after the startup time necessary for the defect inspection apparatus 1A to operate normally has elapsed. It is activated when the inspection becomes possible or when the transition contact 110b and the transition contact 109d that are closed under the conditions described later are closed. When the state memory S1 is activated, the control processing unit keeps the operation command flag in the set state (active operation 101a).
Further, when the operation command flag is set, the transition contact 101b is closed.

  Further, when the initial operation flag described later is not set, the transition contact 101c is closed, and when both the transition contacts 101b and 101c are closed, the state memory S1 is replaced with the state memory S1. Is deactivated) and the state memory S2 is activated.

When the state memory S2 is activated, the control processing unit closes the entrance shutter 62a and the exit shutter 62b (activation operation 102a). Furthermore, the motor 16 is driven, and the intermittent rotation operation of the rotating shaft 17a by the intermittent rotation drive mechanism 17 is started. While the control processing unit reads the rotation angle of the encoder 16a, the opening of the container storage groove 19 of the filling container movement holding plate 18A corresponds to the carry-in completion position 12a of the carry-in conveyor 12 and the non-defective product carry-out position 13a of the carry-out conveyor 13. The filling container movement holding board 18A is arranged (active operation 102b), and the initial operation flag is set (active operation 102c).
When the initial operation flag is set, the transition contact 102d is closed and the transition contact 101c is released from being closed.

  When the transition contact 102d is closed, the state memories S3, S5, and S8 are activated via the translation branch line 91a instead of the state memory S1, the state memory 2 is deactivated, and the activation operations 102a to 102c are stopped. .

When the state memory S3 is activated, the control processing unit opens the entrance shutter 62a, controls the cylinder 63a to open the carry-in opening 22a (activation operation 103a), and starts the operation of the carry-in conveyor 12. (Activation operation 103b).
Then, when the light receiver 83a of the carry-in detection sensor unit 81a transmits a carry-in signal, the transition contact 103c is closed.
When the transition contact 103c is closed, the state memory S4 is activated instead of the state memory S3, and the activation operations 103a and 103b are stopped.
When the state memory S4 is activated, the control processing unit drives the entrance shutter 62a to control the cylinder 63a so as to close the carry-in opening 22a, and restricts the carry-in of the inspected object 31 to the carry-in completion position 12a. (Active operation 104a).

  Further, when the state memory S8 is activated, the control processing unit drives the infrared electronic camera 39 to see through the thermocompression-bonding seal portion 33a of the object 31 to be inspected currently set in the infrared light transmission window 21d. An image is captured (active operation 108a). As the fluoroscopic image is captured, the transition contact 108b is closed, and the state memory S9 is activated instead of the state memory S8.

When the state memory S9 is activated, the control processing unit operates the image processing means 42 to generate the actual product perspective image data 45b (activation operation 109a), the actual product perspective image data 45b, and the data memory 45 stored in advance. The comparison with the reference fluoroscopic image data 45c (activation operation 109b) and the presence / absence of the thermocompression bonding of the thermocompression-bonding seal portion 33a of the object 31 to be inspected based on the comparison are performed. Setting is performed (active operation 109c).
The determination flag set here means that a non-defective product determination flag is set only when there is no thermocompression bonding defect, and if there is a thermocompression bonding defect, the non-defective product determination flag is left as it is (reset state). Say things. When the setting of the determination flag is completed, the transition contact 109d is closed.

  In addition, when the state memory S5 is activated, the control processing unit reads the state of the non-defective product determination flag performed in the previous activation operation 109a (activation operation 105a). When the control processing unit determines that the initial operation flag is set and the non-defective product determination flag is set (the object 31 to be inspected is non-defective), the transition contact 105b is closed. When the transition contact 105b is closed, the state memory S6 is activated instead of the state memory S5.

When the state memory S6 is activated, the control processing unit controls the cylinder 63a so as to open the outlet shutter 62b and open the carry-out opening 22b (activation operation 106a) and drives the carry-out conveyor 13 ( The activation operation 106b) resets the non-defective product determination flag set when the state memory S9 was activated last time (activation operation 106c).
When the carry-out conveyor 13 is driven in the activation operation 106 b, the inspected object 31 determined as having no defect is transferred to the outer end of the case 2 of the carry-out conveyor 13 and arranged below the carry-out conveyor 13. The container is stored in a packaged container (not shown).
When the object to be inspected 31 is detected by the carry-out detection sensor unit 81b and the carry-out signal is transmitted from the light receiver 83b in the process of transferring the object to be inspected 31, the transition contact 106d is closed and the state memory S6 is replaced. The state memory S7 is activated.
In the active operation 105a, it is determined that the initial operation flag is not set (whether the initial operation has been performed is not determined) or the non-defective product determination flag is reset (the object 31 to be inspected is defective). Then, the transition contact 105c is closed, and the state memory S7 is activated in place of the state memory S5. That is, the operations of the activation operations 106a to 106c are skipped.

When the state memory S7 is activated, the control processing unit controls the cylinder 63a to close the outlet shutter 62b and closes the carry-out opening 22b. At this time, as described above, the carry-out conveyor 13 is in a stopped state.
After the state memory S4 and the state memory S7 are activated, when the entrance shutter 62a closes the carry-in opening 22a, the transition contact 104b is closed, and when the exit shutter 62b closes the carry-out opening 22b, the transition contact 107b is The transition contact 104b and the transition contact 107b are both closed. The translation merge line 91b prohibits the activation of the next state until both the state memory S4 and the state memory S7 are activated. However, both the state memory S4 and the state memory S7 are activated, and the transition contact 104b and the transition are made. By closing both of the contacts 107b, the state memory S10 is activated in place of the state memories S4 and S7.

When the state memory S10 is activated, the control processing unit controls the torque of the motor 16 so that the driving is completed at the position where the intermittent rotation driving mechanism 17 rotates 90 degrees counterclockwise. That is, the filling container moving holding plate 18A is rotated 90 degrees counterclockwise (activation operation 110a).
That is, in the activation operation 105a, it is determined that the determination flag is not set (the object to be inspected 31 is defective), and the activation object 106a to 106c is not performed and the object to be inspected is still placed in the non-defective product unloading position 13a. 31 reaches the drop position 20 a, falls freely from the drop hole 21 c, and is collected in the waste storage container 29.
When the driving of the motor 16 is completed, the transition contact 110b is closed, the state memory S10 is inactivated, and the state memory S11 is activated.

  The translation merge line 91c prohibits the activation of the next state memory until both the state memory S9 and the state memory S11 are activated, but the transition contact 110b and the transition are made upon completion of the activation operation 109c and the activation operation 110a. When the contact 109d is closed, the state memory S1 is activated again instead of the state memory S9 and the state memory S11.

And when the state memory S1 is activated again, if the transition contact 101b and the transition contact 102d are continuously closed, the transition contact 101d is closed and the state memory S2 is not activated. The activation operations 102a to 102c are skipped, and the state memories S3, S5 and S8 are activated. Thereafter, as described above, the execution of the sequence program corresponding to the activated state memory S1 and state memory 3 to state memory S10 is repeated until the closing of the transition contact 101b is released.
If the transition contact 101a is not closed when the state memory S1 is activated again, the state memory S1 is in a standby state until the transition contact 101a is closed.

  According to the first embodiment, the filling pad 32 is difficult to transmit, and the infrared filter 40 that transmits only the infrared light in the wavelength band that easily transmits through the filling container 33 is provided with the infrared photoelectronic camera 39 and the thermocompression-bonding seal unit. 33a. Therefore, even if the thickness of the thermocompression-bonding seal portion 33a of the filling container 33 is uneven, the actual fluoroscopic image data 45b extracted from the captured image data 45a has the shape of the unevenness 33b (thickness). It can be stored in the data memory 45 as a striped pattern due to non-uniformity). Thereby, it becomes easy to compare the actual fluoroscopic image data 45b and the reference fluoroscopic image data 45c, and the inspection accuracy of the thermocompression bonding state of the thermocompression sealing portion 33a is improved.

  Since the infrared filter 40 is selectively used based on the measured values of the infrared light transmittance of the filling 32 and the infrared light transmittance of the filling container 33, the transmission wavelength can be set within a wide wavelength band. Therefore, it is possible to select a wavelength region in which the difference in infrared light transmittance between the filling 32 and the filling container 33 is large. Therefore, clearer captured image data 45a is obtained, and the inspection accuracy of the presence or absence of thermocompression bonding of the thermocompression seal portion 33a performed based on this is improved.

Further, since the peripheral wall 22 is provided, the inspection object 20b, the non-defective product unloading position 13a, and the inspected object 31 do not jump out of the filling container movement holding plate 18A even when the filling container movement holding plate 18A rotates at high speed. It can be transferred to any of the drop positions 20a.
In addition, since polyethylene is used as the material of the peripheral wall portion 22, sliding resistance due to friction between the filling container 33 and the peripheral wall portion 22 is suppressed, and wear of the peripheral wall portion 22 can be reduced.

Further, by providing the filling container rotation moving means 15, when the inspected object 31 is transferred from the carry-in completion position 12a to the inspection position 20b, the arrangement position of the thermocompression-bonding seal portion 33a and the centrifugal force are used. Bubbles inside the filling container 33 in the vicinity of the thermocompression seal portion 33a can be separated from the thermocompression seal portion 33a. Therefore, the accuracy of the defect inspection determination of the filling container 33 can be further improved.
In addition, the opening of the loading opening is opened at the start of loading of the inspection object 31 to the loading completion position 12a, and at the same time as the inspection object 31 is transferred to the loading completion position 12a, the entrance shutter 62a is closed. Yes. Therefore, the inspected object 31 does not intrude into the container storage groove 19 of the filling container movement holding plate 18A.

  In addition, for the inspected object 31 that is determined to be defective in the crimping state of the thermocompression-bonding seal portion 33a at the inspection position 20b, the unloading conveyor 13 is moved even if the inspected object 31 is transferred to the non-defective product unloading position 13a. It stops and closes the carrying-out opening 22b, so that it is transferred to the drop position 20a by the next rotation of the filling container moving holding plate 18A. Therefore, defective products and non-defective products in the inspected object 31 can be efficiently separated.

  Further, since the filling container pressure contact mechanism 71 is used, when the thermocompression bonding state of the thermocompression sealing part 33a is insufficient, the thermocompression bonding part 33a with insufficient thermocompression bonding due to the pressing force of the rolling roller 75 is used. The part of is peeled off. Therefore, since the filling 32 flows to the peeled thermocompression seal part 33a, it is easy to detect an abnormality in the thermocompression seal part 33a.

Embodiment 2. FIG.
14 is a front view of a filling container defect inspection apparatus according to Embodiment 2 of the present invention, and FIG. 15 is a cross-sectional view of the vicinity of the filling container moving holding plate of the filling container defect inspection apparatus according to Embodiment 2 of the present invention. And corresponds to FIG. FIG. 16 is an enlarged view of the vicinity of the filling container moving holding plate in FIG.
14 to 16, the same reference numerals are given to the same portions as those in the first embodiment, and the description thereof is omitted.

14 to 16, the filling container defect inspection apparatus 1B includes a filling container transport unit 11B including a filling container movement holding plate 18B, a shutter 62d, and a chuck mechanism 85.
In addition, the peripheral wall part 22, the entrance shutter 62a, and the exit shutter 62b in the defect inspection apparatus 1A for the filled container are omitted.
The filling container moving holding plate 18B has groove portions 18a on both side walls forming the container storing groove 19 and on opposite side wall surfaces in the vicinity of the opening of the container storing groove 19 in the thickness direction of the filling container moving holding plate 18B. Is formed. Then, both edges of the plate-shaped shutter 62d are inserted into both the groove portions 18a, and the shutter 62d is slidable in the thickness direction of the filling container moving holding plate 18B. Each of the shutters 62d is rotated integrally with the filling container moving holding plate 18B.

Further, as shown in FIG. 16, at the tip of the arm 63b extending from the cylinder 63a, a shutter 62d disposed in the container storage groove 19 reaching the carry-in completion position 12a and the non-defective product carry-out position 13a is provided on the arm 63b. A chuck mechanism 85 for raising and lowering the shutter 62d in conjunction with the raising and lowering is provided.
Further, the cylinder 63a of the opening / closing drive mechanism 63 is attached to the support piece 9 fixed to the inner walls on both side surfaces of the housing 2 as described above. Note that the cylinder 63a may be attached anywhere inside or outside the housing 2 as long as it is a fixed portion that is not interlocked with the rotation operation of the filling container moving holding plate 18B.

  The chuck mechanism 85 is provided at a distal end portion of an arm 63b that moves up and down when the cylinder 63a is driven. When the arm 63b is lowered, an engagement means (not shown) that can engage (hold) the shutter 62d. have. Then, when the arm 63b is lifted from the state in which the arm 63b is engaged with the shutter 62d, the shutter 62d is lifted along the groove portion 18a, and the opening of the container storage groove 19 at the carry-in completion position 12a and the non-defective product carry-out position 13a. Each is open. Further, when the engagement of the shutter 62d by the engaging means is released, the shutter 62d falls along the groove portion 18a and closes each opening of the container storage groove 19. That is, the opening and closing of the opening of the container housing groove 19 at the carry-in completion position 12a and the non-defective product carry-out position 13a by the shutter 62d can be controlled by the chuck mechanism 85 and the cylinder 63a.

  If the opening and closing and closing of the container housing groove 19 by the shutter 62d are controlled in accordance with the carry-in signal and carry-out signal from the light receivers 83a and 83b and the inspection result of the filling container 33, the carry-in completion position 12a of the object 31 to be inspected. It is possible to arbitrarily carry in and carry out from the non-defective product carry-out position 13a.

  More specifically, the shutter 62d at the carry-in completion position 12a opens the opening of the container storage groove 19 at the start of carrying-in of the filling container 33 to the carry-in completion position 12a, and the filling container 33 is carried into the carry-in completion position 12a. Then, the opening of the container storage groove 19 is controlled to be closed. In addition, the shutter 62d disposed so as to be able to open and close the container storage groove 19 at the non-defective product carry-out position 13a is a non-defective product for the filling container 33 determined by the image processing means 42 that there is no abnormality in the thermocompression-bonding seal portion 33a. When stopped at the unloading position 13a, the opening of the container storage groove 19 is opened, and when it is detected that the filling container 33 is unloaded from the filling container moving holding plate 18B, the opening is controlled to be closed. . When the filling container 33 determined by the image processing means 42 to be abnormal in the thermocompression-bonding seal portion 33a of the filling container 33 is stopped at the non-defective product unloading position 13a, the shutter 62d keeps the opening of the container housing groove 19 closed. It is controlled to become.

  Therefore, when the object to be inspected 31 is intermittently rotated integrally with the filling container movement holding plate 18B, the shutter 62d closes the opening of the container storage groove 19, and the object to be inspected 31 is in the filling container movement holding plate. Jumping outward from 18B is prevented.

  The operation control for the defect inspection determination of the filling container 33 is performed by replacing the opening / closing opening 22a and the opening 22b with the entrance shutter 62a and the exit shutter 62b, but with the loading completion position 12a and the non-defective product unloading position 13a. Except that the opening of the container housing groove 19 is opened and closed by the shutter 62d.

In the second embodiment, when one inspection object 31 reaches the carry-in completion position 12a, the shutter 62d closes the opening of the container storage groove 19, so that it overlaps the container storage groove 19 of the filling container movement holding plate 18B. Thus, the inspected object 31 does not enter.
Further, the shutter 62d rotates integrally with the filling container movement holding plate 18B. Therefore, when the inspected object 31 is transferred from the carry-in completion position 12a to the inspection position 20b, the non-defective product carry-out position 13a, and the drop position 20a, in the first embodiment, the thermocompression-bonding seal portion 33a and the peripheral wall portion 22 are Although it was transferred while sliding, it is not worn out with respect to the transfer of the inspected object 31. Accordingly, it is possible to prevent the inspected object 31 from being damaged.

  Further, the chuck mechanism 85 and the cylinder 63a are provided in the fixed portion and do not rotate integrally with the filling container moving / holding plate 18B. Therefore, the opening of the container housing groove 19 of the shutter 62d transferred to the carry-in completion position 12a and the non-defective product carry-out position 13a is opened and closed by the pair of chuck mechanisms 85 and the pair of cylinders 63a. That is, since it is not necessary to provide the chuck mechanism 85 and the cylinder 63a for each of the four shutters 62d provided so as to open or close the opening of the container storage groove 19, the cost of parts can be reduced.

  In each of the embodiments, when there is a thermocompression bonding failure in the filling container 33 of the object to be inspected 31, the object to be inspected 31 is transported to the drop position 20a and dropped from a drop hole 21c as a defective product carrying means. However, the defective product carrying means is not limited to the drop hole 21c, and the defective object carrying conveyor 31 is judged to be a defective object 31 in the same manner as the carry-out conveyor 13. May be provided so as to be transportable from the drop position 20a and serve as defective product carrying means.

Further, the container storage grooves 19 are formed so that the respective openings are directed radially outward centering on the filling container moving holding plates 18A and 18B and are arranged at a pitch of 90 degrees in the circumferential direction. Although described, the openings are not limited to a 90-degree pitch, and a plurality of openings may be formed at a predetermined angular pitch.
Further, if a servo motor driven by a servo amplifier is used as the motor 16, the filling container moving holding plates 18A and 18B can be intermittently rotated without using the intermittent rotation driving mechanism 17.

It is a front view of the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention. It is II-II arrow sectional drawing of FIG. In FIG. 2, it is sectional drawing which does not consider the filling container movement holding | maintenance board. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. In FIG. 1, it is the front view to which the periphery of the filling container press-contact machine part was expanded. It is a figure for demonstrating the determination method of the presence or absence of the defect of a filling container by the image processing means of the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention. It is the upper side figure to which the actual article perspective image of the to-be-inspected object test | inspected with the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention was expanded. It is a top view of the reference fluoroscopic image data compared with the actual article fluoroscopic image in the defect apparatus of the filling container which concerns on Embodiment 1 of this invention. It is a top view of the thermocompression bonding seal | sticker part of the filling container inspected by the defect apparatus of the filling container which concerns on Embodiment 1 of this invention. The figure which shows the relationship between the transmittance | permeability of the infrared light of the filling thing with which the filling container of the to-be-inspected object inspected by the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention, and a wave number. It is a figure which shows the relationship between the transmittance | permeability of the infrared light of the filling container of the to-be-inspected object inspected by the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention, and a wave number. It is a figure which shows the relationship between the transmittance | permeability of the infrared light of the infrared light filter used for the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention, and a wave number. It is a sequential function chart for demonstrating the whole operation | movement of the defect inspection apparatus of the filling container which concerns on Embodiment 1 of this invention. It is a front view of the defect inspection apparatus of the filling container which concerns on Embodiment 2 of this invention. It is sectional drawing of the periphery of the filling container moving holding | maintenance board of the defect inspection apparatus of the filling container which concerns on Embodiment 2 of this invention. In FIG. 14, it is the figure which expanded the periphery of a filling container movement holding | maintenance board.

Explanation of symbols

  1A, 1B Filling container defect inspection device, 12 carry-in conveyor (carry-in means), 13 carry-out conveyor (good product carry-out means), 12a carry-in completion position, 13a good-goods carry-out position, 15 filling container rotation moving means, 18A, 18B filling container movement Holding plate, 19 container storage groove, 20a drop position (defective product unloading position), 20b inspection position, 21c drop hole (defective product unloading means), 22 peripheral wall, 22a carry-in opening, 22b carry-out opening, 29 waste storage Container, 32 Filled filling, 33 Filling container, 33a Thermocompression-bonding seal part, 42 Image processing means, 45b Actual product perspective image data, 45c Reference perspective image data, 62a Inlet shutter, 62b Exit shutter, 62d shutter, 71 Filled container pressure contact mechanism.

Claims (10)

A filling container defect inspection device for inspecting defects in a thermocompression seal portion of a filling container filled with a filling,
A filling container transport means having a filling container rotation moving means for intermittently transferring the filling container carried into the carry-in completion position to the inspection position;
An infrared heater that projects infrared light onto a portion including the thermocompression-bonding seal portion of the filling container that has been transferred to the inspection position, an infrared electronic camera that images infrared light transmitted through the filling container, and An imaging unit having an infrared light filter provided in an optical path until the infrared light projected from the infrared light heater reaches the infrared electronic camera;
Imaging with the infrared photoelectronic camera regarding the actual product fluoroscopic image data obtained by extracting only the portion of the filling material from the fluoroscopic image taken with the infrared photoelectronic camera and the standard sample product of the filling container having a normal thermocompression-bonded seal portion in advance. Image processing means for determining the presence or absence of a thermocompression bonding abnormality of the thermocompression-bonding seal part by comparison with reference fluoroscopic image data obtained by extracting only the portion of the filling from the fluoroscopic image that has been performed,
With
The defect inspection apparatus for a filling container, wherein the infrared filter selectively transmits the infrared light in a wavelength band that is more easily transmitted through the atmosphere and the filling container than the filling. The infrared photoelectronic camera is capable of sensing infrared light having a wavelength band of 3 to 5 μm or 8 to 14 μm,
The infrared light heater projects broadband infrared light including 3 to 5 μm or 8 to 14 μm,
The infrared filter has a wavelength range of 3 to 5 μm or 8 to 14 μm, and the red light in a wavelength region in which a difference in transmittance of the infrared light between the filling and the filling container is large. 2. The method according to claim 1, wherein the filling material is selectively used based on an actual measurement value of the infrared light transmittance of the filling and the infrared light transmittance of the filling container so as to transmit external light. Defect inspection apparatus for filled containers as described. The filling container rotating / moving means has a plurality of container storage grooves that are arranged at a predetermined pitch in the circumferential direction with the openings directed outward in the radial direction, and has a plurality of container storage grooves for storing the loaded filling containers. Each of the filling container moving holding plate that rotates intermittently so as to be circulated from the carry-in completion position to the inspection position, the non-defective product carry-out position, the defective product carry-out position, and the carry-in complete position; A peripheral wall having a carry-in opening and a carry-out opening that are provided to surround the filling container moving and holding plate so as to prevent the movement of the filling container by force and open to the carry-in completion position and the non-defective product carry-out position; With
The filling container transporting means determines that the thermocompression-bonding seal portion of the filling container is free from defects by carrying-in means for bringing the filling container into the filling container rotating / moving means at the loading completion position, and the image processing means. The non-defective product unloading means for unloading the filling container from the non-defective product unloading position and the unloading means for unloading the filling container from which the thermocompression bonding state of the thermocompression-bonding seal portion is determined to be unsatisfactory. Have good product removal means,
The filling container is arranged with the thermocompression-bonding seal part on the front end side in the direction in which the centrifugal force is applied,
The non-defective product unloading means removes the filled container from the non-defective product only when the image processing means determines that the thermocompression-bonding seal portion of the filled container has no abnormality at the non-defective product unloading position. It is driven so that it may carry out from a carrying out position, The defect inspection apparatus of the filled container of Claim 1 or Claim 2 characterized by the above-mentioned.   4. The filling container according to claim 3, wherein the defective product unloading means is formed by a drop hole provided at the defective product unloading position, and a waste product storage container is disposed below the drop hole. Defect inspection equipment.   Each of the entrance shutter and the exit shutter is provided so as to be able to open and close each of the carry-in opening and the carry-out opening, and the entrance shutter closes the carry-in opening when the filling container is carried into the carry-in completion position. Then, after the filling container is transferred to the inspection position, the carry-in opening is opened, and the outlet shutter is the filling container that is determined by the image processing means to have no abnormality in the thermocompression-bonding seal part. The unloading opening is opened only when stopped at a non-defective product unloading position, and the unloading opening is closed when it is detected that the filling container has been unloaded from the filling container moving holding plate. The defect inspection apparatus for a filled container according to claim 3 or 4.   The said peripheral wall part is formed with the high density polyethylene, The defect inspection apparatus of the filling container of any one of Claim 3 thru | or 5 characterized by the above-mentioned. The filling container rotating / moving means has a plurality of container storage grooves that are arranged at a predetermined pitch in the circumferential direction with the openings directed outward in the radial direction, and has a plurality of container storage grooves for storing the loaded filling containers. Each includes a filling container movement holding plate that rotates intermittently so as to be circulated from the carry-in completion position to the inspection position, a good product carry-out position, a defective product carry-out position, and the carry-in completion position,
The filling container transporting means determines that the thermocompression-bonding seal portion of the filling container is free from defects by carrying-in means for bringing the filling container into the filling container rotating / moving means at the loading completion position, and the image processing means. The non-defective product unloading means for unloading the filling container from the non-defective product unloading position and the unloading means for unloading the filling container from which the thermocompression bonding state of the thermocompression-bonding seal portion is determined to be unsatisfactory. A non-defective product carrying means,
A shutter is disposed on the filling container moving holding plate so that each opening of the container storing groove can be opened and closed, and when the filling container moving holding plate is stopped, the container storing groove at the loading completion position can be opened and closed. The opened shutter opens the opening of the container storage groove when the filling container starts to be loaded into the loading completion position, and closes the opening of the container storage groove when the filling container is loaded into the loading completion position. The shutter disposed so as to be able to open and close the container storage groove at the non-defective product unloading position is such that the filled container determined by the image processing means that there is no abnormality in the thermocompression-bonding seal portion of the filled container. When it is stopped at the position, the opening of the container storage groove is opened, and when it is detected that the filling container is carried out of the filling container moving holding plate, the opening is closed and the shutter is shut. 3. The filling according to claim 1, wherein the filling container moving and holding plate is rotated integrally with the filling container moving and holding plate while closing each of the openings of the container storage groove when the filling container moving and holding plate is rotated. Container defect inspection device.   A chuck mechanism disposed to be engageable with each of the shutters transferred to the carry-in completion position or the non-defective product unloading position, and the chuck mechanism disposed on a fixed portion and engaged with each of the shutters The filling container inspection apparatus according to claim 7, further comprising: an opening / closing drive mechanism that moves the shutter together with the shutter so as to open or close the opening of the container storage groove.   8. The defect of a filling container according to claim 7, wherein said defective product carrying means is formed by a drop hole provided at said defective product carrying position, and a waste product container is disposed below said drop hole. Inspection device.   8. The filling container according to claim 3 or 7, wherein a filling container press-contact mechanism is provided so as to press-contact the trunk portion of the filling container when the filling container is moved to the inspection position. Defect inspection equipment.

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