JP2021169322A - Correctness determination device for product name and identification code displayed on food packaging sheet - Google Patents

Abstract

To provide a correctness determination device which accurately detects a product name and identification code of packaged food and determines whether they are the correct product name and identification code while allowing photos to be taken regardless of the form of the product to be transported, and further can detect the packaging state of a packaging sheet.SOLUTION: A correctness determination device for product names and identification codes displayed on food packaging sheets is configured such that a detection unit is placed on the upper side in the middle of a distribution process of packaged foods to take photos of printed displays on the front side surface of packaged food, is provided with a packaged food inversion unit on the lower distribution side of an upper detector so that the front and back of the packaged food should be inverted at the front and back positions of the detection unit of the packaged food so that the printed displays on the back side surface of the packaged food can also be imaged by the upper detector, and has the detection unit for detecting the packaging state is placed at the upper position and the side position of the lower conveyor.SELECTED DRAWING: Figure 1

Description

The present invention relates to a correctness determination device for a product name and an identification code displayed on a food packaging sheet for determining the correctness of the product name and barcode displayed on the front surface and the back surface of the packaging sheet of the packaged food.

Conventionally, the product name of packaged food, for example, "onigiri" is printed on the front surface of the food packaging sheet, and on the back surface of the packaging sheet, information such as raw materials, expiration date, and price represents an identifier bar. It is displayed by code or QR code (registered trademark).
These identification codes are configured so that they can be converted into one-dimensional codes according to certain rules, read by a machine such as a cash register, and output as digital information of packaged foods.
Therefore, the product name display printed on the surface of the packaging sheet so that the user can easily see the identification code and the type of food is the most important identification display for the user and the manager.

However, the product name and identification code displayed on the wrapping paper of the packaged food in this way may be printed in a faint manner due to insufficient labeling on the wrapping paper, despite the most important information essential for selling the product. In some cases, the identification code itself was displayed incorrectly, or the identification code itself was not printed. As a countermeasure, there is a method of inspecting with a camera at the end of the print display work as an assembly line, automatically detecting the packaged food with a defective display in the middle of the flow work such as a conveyor, and excluding it from the flow. ..
Such a defective packaged food detection device detects defective packaged foods based on detection images taken from the upper and lower sides of the packaged foods, and eliminates the defective packaged foods.
That is, since the items described in the conventional packaging defects required for detection of packaging defects are displayed on the front side and the back side of the packaged food, both sides are imaged with each camera to detect the defective products. As a technique for detecting packaging defects in packaged foods conveyed by a conveyor, there is a technique described in Patent Document 1 or Patent Document 2 below.

The label inspection device disclosed in Patent Document 1 adds color information to a product label. As a result, we are proposing a technology that can reliably detect the presence or absence of a label on which product information is printed even when the packaged food is unstable.

Further, Patent Document 2 describes an imaging means for capturing the front label information printed on the front surface of the inspection target, a code scanner for reading the print information of the label attached to the back surface of the inspection target, and an inspection target. Disclosure of an inspection device including a transporting means for transporting an object and a pair of long guide members provided along a transport path of the transporting means at a predetermined distance above the mounting surface of the transporting means. Has been done. Patent Document 2 displays the inspection object on the front and back surfaces of the inspection object while suppressing the inspection object from tipping over due to shaking during transportation by passing the vertically placed inspection object between a pair of guide members. By locating the displayed information to the left and right with respect to the transport direction, the technology that enables reliable inspection of the information displayed on the front and back surfaces of the inspection object without being hidden by the transport means is disclosed.

Japanese Unexamined Patent Publication No. 2005-003504 Japanese Unexamined Patent Publication No. 2018-066660

However, in the technique described in Patent Document 1, although it is possible to detect the presence or absence of a sticker on which the product information affixed to the back surface side of the packaged food, that is, the contact surface with the conveyor, is printed, the sticker is printed. There is a problem that it is not possible to accurately determine whether or not the printed character information and bar code information are correct and whether or not they are printed to the extent that they can be read.
Further, in the technique described in Patent Document 1, when the packaged food is partially damaged or turned over and the packaged food is exposed from the packaging sheet, the packaged food is arranged in the lower direction of the conveyor. There is also a problem that a part of the food packaged in the packaging sheet falls on the installed detection lens and covers the detection lens surface, so that accurate imaging by the camera from the lower side cannot be performed.

Further, in the technique described in Patent Document 2, since the food information displayed on the front and back surfaces of the inspection object is placed so as to be in the left-right position with respect to the transport direction, the food information may be hidden by the transport means. The inspection can be carried out reliably without any problems. However, in the technique described in Patent Document 2, the inspection object is vertically placed on the upper surface of the transport means and is transported in an unstable form with a small installation area. I needed it.
Therefore, in Patent Document 2, a long guide member is provided as a fall restricting member in the left-right direction in the transport direction, but a fall control member is not provided in the front-rear direction in the transport direction. Therefore, if the installation surface with the transport means does not have a flat surface, the inspection object may tip over or roll in the front-rear direction in the transport direction, and the installation surface with the transport means has a flat surface. There was a problem that only things could be transported stably.

In view of this problem, the present invention enables imaging regardless of the form of the product to be transported, accurately detects the product name and identification code of the packaged food, determines whether the product name and identification code are correct, and further, packaging. It is an object of the present invention to provide a correctness determination device that can also detect the packaging state of a sheet.

In the first aspect of the present invention, a detection unit is arranged on the upper side in the middle of the distribution process of the packaged food, and the printed display on the front side surface of the packaged food is imaged, and the printed display on the back surface of the packaged food is imaged. The packaged food reversing part is arranged on the lower side of the distribution of the upper detecting part so that the front and back of the packaged food are reversed forward and backward at the front and rear positions of the packaged food detection part so that the printed display can also be imaged by the upper detecting part. This is a correct / incorrect determination device for the product name and identification code displayed on the food packaging sheet.

Further, in the second aspect of the present invention, the packaged food reversing portion is composed of a stepped upper side conveyor and a lower side conveyor, and the rear end edge of the upper side conveyor is arranged at a position above the start end edge of the lower side conveyor. It is a correctness determination device for the product name and identification code displayed on the food packaging sheet, which is characterized in that the front and back sides of the packaged food can be inverted at the stepped portion of both the upper side and the lower side conveyors.

Further, the third aspect of the present invention is displayed on the food packaging sheet, wherein the step portion between the upper conveyor and the lower conveyor is set to a longer distance than the longest flat portion of the packaged food. It is a correctness judgment device for product names and identification codes.

Further, in the fourth aspect of the present invention, the detection unit for detecting the packaging state of the food packaging sheet is arranged on the lower side of the distribution of the upper detection unit at the upper position and the side position of the lower side conveyor. It is a correct / incorrect judgment device for the product name and identification code displayed on the characteristic food packaging sheet.

According to the first aspect of the present invention, a detection unit is arranged on the upper side in the middle of the distribution process of the packaged food so as to image the printed display on the front side surface of the packaged food and the back side of the packaged food. The packaged food reversing part is arranged on the lower side of the distribution of the upper detecting part so that the front and back of the packaged food are reversed forward and backward at the front and rear positions of the packaged food detection part so that the printed display on the surface can also be imaged by the upper detecting part. Since it is provided, by providing a packaged food reversing part that reverses the front and back sides of the packaged food, a detection part for detecting the product name and identification code information printed on the packaging sheet can be arranged above the transport conveyor, and due to packaging defects. Even if a part of the packaged food is damaged or turned over and the packaged food or the packaging sheet hangs downward and protrudes, the image of the detection part from above is not hindered, and the product name is defective. Packaged foods with incorrect identification codes can be reliably detected.

Further, according to the second aspect of the present invention, the packaged food reversing portion is composed of a stepped upper side conveyor and a lower side conveyor, and the rear end edge of the upper side conveyor is positioned above the start end edge of the lower side conveyor. Since the front and back surfaces of the packaged food can be inverted at the step portion generated between the upper and lower conveyors, the packaged food is transported by both the upper conveyor and the lower conveyor. The front and back sides of the packaged food can be reversed regardless of the form of the product to be packaged. In addition, since the packaged food is inverted by the step portion formed between the upper and lower conveyors, the vertical direction caused by the natural drop caused by the packaged food in the process of the inverted packaged food falling from the upper conveyor to the lower conveyor. The displacement to the upper side and the horizontal displacement caused by the thrust of the upper conveyor are combined, and the packaged food causes a reversal falling motion in which the packaged food falls while reversing from the upper conveyor to the lower conveyor. The front and back sides of the packaged food can be reliably reversed.

Further, according to the third aspect of the present invention, the step portion between the upper side conveyor and the lower side conveyor is set to a longer distance than the longest flat portion of the packaged food, so that the step portion caused by the weight of the packaged food is good. Due to the rotational moment with the end edge of the side conveyor as the base point, the rear end of the packaged food is from the tip of the packaged food until the tip of the packaged food horizontally projected from the upper conveyor comes into contact with the lower conveyor. Can be located on the downstream side of the distribution line, and when the tip of the packaged food comes into contact with the lower conveyor, the tip of the packaged food suddenly due to the frictional force generated at the tip of the packaged food. It is possible to reliably reverse the packaged food by stopping and causing a reversing motion with the tip of the packaged food as the base point in the packaged food.
Therefore, the front and back surfaces of the packaged food can be reversed regardless of the orientation in which the packaged food to be transported is placed on the upper surface of the conveyor on the good side.

Further, according to the fourth aspect of the present invention, the detection unit for detecting the packaging state of the food packaging sheet is arranged on the lower side of the distribution of the upper detection unit at the upper position and the side position of the lower side conveyor. , The detection unit located above the lower conveyor can image the packaging form of the packaged food in the plan view, and the detection unit arranged at the side position of the lower conveyor can image the packaging form in the side view of the packaged food. can. Therefore, if a part of the food packaging sheet that surrounds the packaged food is damaged or turned over, the packaged food has no error in the printed information printed on the front and back sides of the packaged food. Even if there is, it can be detected as a packaging defect by the detection unit and can be reliably removed from the transport line.

It is an overall perspective view which shows the correctness determination apparatus of the product name and the identification code displayed on the food packaging sheet which concerns on embodiment of this invention. It is a back side whole perspective view which shows the correctness determination apparatus of the product name and identification code displayed on the food packaging sheet which concerns on embodiment of this invention. It is a front view which shows the correctness determination apparatus of the product name and identification code displayed on the food packaging sheet which concerns on embodiment of this invention. It is a perspective view which shows the state which the packaged food is inverted in the step part which concerns on embodiment of this invention. It is a front view which shows the operation of the discharge mechanism which concerns on embodiment of this invention. It is a top view which shows the internal structure of the distribution mechanism which concerns on embodiment of this invention.

In the present invention, the detection unit is arranged on the upper side in the middle of the distribution process of the packaged food so as to image the printed display on the front side surface of the packaged food, and the printed display on the back side surface of the packaged food is also on the upper side. A packaged food reversing part is arranged on the lower side of the distribution of the upper detection part so that the front and back sides of the packaged food are reversed forward and reverse at the front and rear positions of the packaged food detection part so that the image can be captured by the detection part of the packaged food. While the food reversing part is composed of a stepped upper conveyor and a lower conveyor, the upper conveyor is arranged above the starting edge of the lower conveyor and is generated between the upper conveyor and the lower conveyor. The gist is that the front and back surfaces of the packaged food can be inverted on the stepped portion, and the stepped portion between the upper conveyor and the lower conveyor is longer than the longest flat portion of the packaged food.

Embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6.
FIG. 1 shows an overall perspective view of the correctness determination device A for the product name and identification code displayed on the food packaging sheet of the packaged food f of the present invention.
In the description of the present embodiment, the front-back and left-right directions are described with the traveling direction from the upstream side to the downstream side of the distribution line.

The correctness determination device (hereinafter referred to as “correctness determination device”) A of the product name and identification code displayed on the food packaging sheet according to the present embodiment is printed or affixed to the front and back surfaces of the packaged food f transported on the distribution line. It is a judgment device for confirming whether the information of the given identifier is printed correctly, and is used as a judgment device for packaged foods such as round rice balls.
In FIG. 1, the correctness determination device A is located on the front side of the case 10 and the case 10 containing an interlocking control mechanism for excluding packaged foods determined to be defective from the correctness determination and captured video data from the distribution line. A detection imaging mechanism unit 20 (see FIG. 3) as a detection unit for detecting defects in the packaged sheet of the arranged packaged food f, a defective product exclusion unit 40 for excluding defective products from the distribution line, and exclusion. It is composed of a dust box 90 for storing defective products and a dust box 90.

As shown in FIGS. 1 and 3, the case 10 is a rectangular parallelepiped having a substantially rectangular shape in a plan view, and a touch panel type operation panel 11 is arranged on the upper part of the left side surface in the left-right direction. A camera monitor 12 for displaying information captured by each detection unit described later is provided at the lower part of the operation panel 11, and various types for operating the correctness determination device A are provided in the subsequent direction (upstream side of the distribution line). The operation buttons (power switch 13, operation button 14, stop button 15) are arranged from the upper side to the lower side of the case 10.

On the back side (inside the case 10) of the touch panel type operation panel 11 constituting the case 10, a determination mechanism for determining the correctness of the detection information detected by the detection imaging mechanism unit 20 and a determination mechanism for determining the defect are determined by this determination mechanism. It is equipped with a defective product exclusion unit 40, which will be described later, and a control mechanism for transmitting a processing signal to the defective product exclusion unit 40 of the product determined to be defective (identification control by combining the determination mechanism and the control mechanism). (Called a department). In the case 10, a detection imaging mechanism unit 20 for imaging the front and back surfaces of the packaged food f is continuously provided on the front side.

The detection and imaging mechanism unit 20 includes a work belt conveyor (not shown) for carrying out the work until the packaging and printing of the packaged food f are completed, a stepped belt conveyor mechanism group 30 connected to the end of the belt conveyor, and the belt. Defective product exclusion unit 40 independently connected to the end of the conveyor mechanism group 30, front side imaging means 50 for imaging the flat surface side of the packaged food f from above, and the inverted flat surface of the packaged food f. It is composed of a back side imaging means 60 for imaging the back surface side from above, and a packaging imaging means 70 for confirming packaging defects of the packaged food f from above and from the side.

The staggered belt conveyor mechanism group 30 includes an upper conveyor 31, a lower conveyor 32 having a start edge 32a arranged below the end edge 31a of the upper conveyor 31, and a downstream side of the end edge 32b of the lower conveyor 32. The upper side conveyor 31 and the lower side conveyor 32 are formed with a predetermined step h as a packaged food reversing portion 80.
Further, a support bracket 54 having a substantially "U" shape and an opening below is suspended above the vicinity of the terminal edge 31a of the upper conveyor 31, and a photoelectric sensor 55 is placed below the support bracket 54. It is arranged. The support bracket 54 is suspended above the upper conveyor 31 via a bracket 53 projecting rearward from the rear surface of the left end portion of the stay case 51 projecting rearward on the rear side surface of the case 10. ..

The photoelectric sensor 55 includes a floodlight that irradiates light and a light receiver that detects the output light of the floodlight. The floodlight and the receiver are arranged so as to face each other at the lower part of the "U" -shaped tip of the support bracket 54. The photoelectric sensor 55 is configured such that the packaged food f conveyed by the upper conveyor 31 operates the front side imaging means 50 described later by shielding the output light of the floodlight. That is, the photoelectric sensor 55 controls the operation of the front side imaging means 50 according to the change in the amount of light input to the light receiver.
Although the control method of the front side imaging means 50 is described using the transmissive photoelectric sensor in the present embodiment, it may be composed of either a regression reflection type or a diffuse reflection type photoelectric sensor.

As shown in FIG. 3, the step h of the packaged food reversing portion 80 has a predetermined shape, for example, a circular shape, a triangular shape, an elliptical shape, etc. Even if the packaged food f is distributed, it can be reliably inverted on the lower conveyor 32 and distributed to the downstream side of the distribution line.

In the packaged food f in contact with the lower side conveyor 32, a frictional force corresponding to the speed difference between the upper side conveyor 31 and the lower side conveyor 32 is generated at the tip edge f1 of the packaged food f. This frictional force causes a reversal motion of the packaged food f with the tip edge f1 of the packaged food f as the base point when the lower side conveyor 32 is slower than the upper side conveyor 31.
When the trailing edge f2 of the packaged food f is located on the downstream side of the distribution line from the tip edge f1 of the packaged food f, the rotational moment due to the own weight of the packaged food f causes the front and back surfaces of the packaged food f. It occurs in the direction of reversal, that is, in the downstream direction of the distribution line.
Further, when the trailing edge f2 of the packaged food f is located on the upstream side of the distribution line from the tip edge f1 of the packaged food f, the rotational moment due to the own weight of the packaged food f is applied to the surface of the packaged food f. That is, it occurs in the upstream direction of the distribution line.

That is, in order to invert the front and back surfaces of the packaged food f, when the tip edge f1 of the packaged food f comes into contact with the lower conveyor 32, the tip edge f1 of the packaged food f and the trailing edge f2 of the packaged food f are connected. It is necessary to position the straight line so that it slopes upward toward the downstream side of the distribution line. In order to satisfy this condition, the step h must be longer than the longest flat portion m of the packaged food f. For example, when the step h is shorter than the longest flat portion m, the leading edge f1 of the packaged food f comes into contact with the upper surface of the lower conveyor 32 before it is completely rotated, and a straight line connecting the leading edge f1 and the trailing edge f2. However, it is not possible to form an upward inclination toward the downstream side of the distribution line, and it becomes difficult to generate a reliable reversal falling motion.
In FIG. 3, the traveling direction of the good side conveyor 31 is shown with respect to the longest flat portion m of the packaged food f, but the longest flat portion m is not necessarily the traveling direction and is placed obliquely with respect to the traveling direction. It may be placed or placed orthogonally.

The packaged food f is generated by a combined force of a horizontal force generated by the thrust of the good side conveyor 31 and a vertical force generated by the gravity applied to the packaged food f, and the good side conveyor 31 is generated. It falls while reversing from the lower side conveyor 32 (see FIG. 4).
That is, the packaged food f is subjected to a combined force of the horizontal constant velocity motion of the good side conveyor 31 and the vertical constant acceleration motion due to free fall when the step h is dropped, while drawing an arc. It reverses and falls on the lower conveyor 32.

The arcuate locus drawn by the packaged food f changes according to the thrust of the good side conveyor 31.
For example, when the traveling speed of the good side conveyor 31 is set to a slow speed, the packaged food f is subjected to a rotational drop motion from the time when the center of gravity of the packaged food f exceeds the terminal edge 31a. Since the traveling speed of the upper conveyor 31 is slow, this rotary drop motion is generated by the rotational moment due to the gravity of the packaged food f that is generated downward on the tip edge f1 of the packaged food f with the end edge 31a as a base point. At this time, since the packaged food f has only a rotational motion with respect to the terminal edge 31a as a base point and gravity generated in the packaged food f, a horizontal force does not occur in the packaged food f, and the packaged food f is almost vertically inverted. Fall.

Further, when the traveling speed of the upper conveyor 31 is high, the packaged food f is horizontally projected from the terminal edge 31a of the upper conveyor 31 to the lower conveyor 32 side. At this time, a thrust by the good side conveyor 31 and a reversal moment when supported by the terminal edge 31a are generated in the packaged food f. In order to invert the front and back surfaces of the packaged food f before it falls from the upper conveyor 31 to the lower conveyor 32, a predetermined time for supporting the packaged food f and the end edge 31a of the upper conveyor 31 is required. It becomes. That is, the reversal falling motion of the packaged food f is generated by the rotational moment when the packaged food f is supported by the end edge 31a, and a sufficient rotational force may be generated when the support time by the end edge 31a is short. It is difficult, and there is a possibility that the rotation cannot be performed between the upper conveyor 31 and the lower conveyor 32.
Therefore, it is desirable that the traveling speed of the good side conveyor 31 be as slow as possible in order to make the contact time between the packaged food f and the terminal edge 31a as long as possible.

Reference numeral 33 in FIG. 1 is an interval adjusting conveyor 33 for transporting the inverted packaged food f, which is continuously arranged on the lower side conveyor 32, and inspects the printed display on the back side of the inverted packaged food f.

The interval adjusting conveyor 33 is configured so that the traveling speed can be adjusted by a photoelectric sensor (not shown) provided near the end edge 32b of the lower side conveyor 32. That is, the interval adjusting conveyor 33 may fluctuate due to the rotational drop motion when the packaged food f passes through the packaged food reversing portion 80 provided between the above-mentioned upper side conveyor 31 and the lower side conveyor 32. In order to keep the distance between the food f and the other packaged food f substantially constant, the traveling speed thereof can be adjusted. For example, when the detection interval when one packaged food f and the other packaged food f pass through the photoelectric sensor is short, the distance between the adjacent packaged foods f is increased by accelerating the traveling speed of the preceding packaged food f. do. On the contrary, when the detection interval when one packaged food f and the other packaged food f pass through the photoelectric sensor is long, the distance between the separated packaged foods f is reduced by slowing down the traveling speed of the preceding packaged food f. Shorten.

By maintaining the interval between the packaged foods f substantially constant on the interval adjusting conveyor 33 in this way, imaging by the back side imaging means 60 can be performed for each packaged food f. That is, a plurality of packaged foods f are not simultaneously photographed at the time of one imaging by the back side imaging means 60, and the correctness can be determined for each packaged food f. Further, when the packaged food f determined to be defective in packaging is excluded by the defective product exclusion section 40 described later, the risk of accidentally excluding the non-defective packaged food f together with the packaged food f determined to be defective in packaging is reduced. doing.

The front side image pickup means 50, the back side image pickup means 60, and the package image pickup means 70 in the detection imaging mechanism unit 20 for imaging the packaged food f to detect defective products will be described.

The front side imaging means 50 is arranged above the vicinity of the end edge 31a of the upper conveyor 31, and the back side imaging is provided above the vicinity of the end edge 33b of the interval adjusting conveyor 33 connected to the downstream side of the lower conveyor 32. The means 60 are arranged, and the package imaging means 70 is arranged above and to the right of the vicinity of the terminal edge 33b of the interval adjusting conveyor 33. Each means functions as a detection unit for inspecting and imaging the printed state of the front side surface and the back side surface of the packaged food f and the packaged state of the packaged food f.

The front-side imaging means 50 projects a stay case 51 in a substantially “L” -shaped plan view bent from the rear side surface of the case 10 toward the distribution line side, and directs the imaging lens downward to the tip of the stay case 51. 1 Detection unit 52 is arranged. The back side image pickup means 60 projects a stay case 62 from a box 61 arranged side by side on the front side surface of the case 10 to the front side of the distribution line, and also arranges a second detection unit 63 with the image pickup lens facing downward. .. The packaged imaging means 70 arranges a third detection unit 71 arranged in parallel with the second detection unit 63 with the image pickup lens facing downward in the stay case 62, and arranges the fourth detection unit 72 in the lower front side of the box 61. There is.

The first detection unit 52 as the front side image pickup means 50 so as to take an image toward the product name printed on the front side of the packaged food f, for example, the package sheet on which the product name of the packaged food f such as "rice ball" or "sandwich" is printed. It is configured in. The product name imaged by the first detection unit 52 is transmitted to an identification control unit (not shown) in the case 10 to determine whether or not the product name is appropriate. The determination information is transmitted to the defective product exclusion unit 40 arranged at the end of the distribution line. If the determination information is "wrong", the defective product exclusion unit 40 operates to exclude the defective product from the distribution line as a defective print product.

The second detection unit 63 as the back side imaging means 60 has bar code information printed on the product sticker directly printed or affixed to the back side of the packaging sheet of the packaged food f, for example, “food raw material” or “manufacturing date”. It is configured to capture images such as "expiration date" and "price". The barcode information detected by the second detection unit 63 is transmitted to the identification control unit (not shown) in the case 10 in the same manner as the first detection unit 52, and determines whether or not the barcode information is appropriate. The determination information is transmitted to the defective product exclusion unit 40 arranged at the end of the distribution line. If the determination information is "wrong", the defective product exclusion unit 40 operates and is excluded from the distribution line as a barcode defective product.

Further, the third detection unit 71 and the fourth detection unit 72 as the packaging image pickup means 70 are configured to image the packaging defect of the packaged food f. The information related to the packaging form captured by the third detection unit 71 and the fourth detection unit 72 is transmitted to the identification control unit (not shown) like the first detection unit 52 and the second detection unit 63, and is the appropriate packaging form? Make a judgment.

Explaining the determination method by the package imaging means 70, first, the third detection unit 71 images the form of the packaged food f placed on the upper surface of the interval adjusting conveyor 33 in a plan view. The imaged information transmits the imaged form of the packaged food f to the identification control unit, and detects the outer peripheral edge portion of the food portion of the packaged food f in the identification control unit from the transmitted imaging information. After that, the detected outer peripheral edge portion is compared with a reference frame set in advance at a certain distance from the edge portion, and whether or not the packaging film surrounding the packaged food f exceeds this reference frame determines whether or not the packaging is defective. judge.
That is, the third detection unit 71 determines whether or not the packaging state of the packaged food f is defective according to the separation distance from the outer peripheral edge of the packaged food.

The fourth detection unit 72 takes an image of the side view of the packaged food f placed on the interval adjusting conveyor 33. After that, the imaged packaged food f is transmitted to the identification control unit, and the upper end portion of the packaged food f in the food portion is detected from the imaged information transmitted to the identification control unit. After that, the detected upper end portion is compared with a height standard set in advance, and whether or not the packaging is defective is determined based on whether or not the height standard is exceeded.
That is, the fourth detection unit 72 determines whether or not the packaging state of the packaged food f is defective according to the separation distance in the height direction from the upper end portion of the packaged food.

Based on the imaging information acquired by the third detection unit 71 and the fourth detection unit 72, the judgment information regarding the correctness of the packaging state of the packaged food f determined by the identification control unit is the defective product exclusion arranged at the end of the distribution line. It is transmitted to the unit 40. If the transmitted determination information is "wrong", the defective product exclusion unit 40 operates and is excluded from the distribution line as a defective packaging product.

In this way, the packaged food f image-inspected by the first detection unit 52, the second detection unit 63, the third detection unit 71, and the fourth detection unit 72 is a non-defective product, a defective printing product, a defective bar code product, and a non-packaging product. If it is classified as one of non-defective products and corresponds to various defective products other than non-defective products, it is excluded from the distribution line by the defective product exclusion unit 40 provided at the end of the distribution line.

As shown in FIG. 2, the defective product exclusion unit 40 is continuously provided at the downstream end of the interval adjustment conveyor 33, and includes a roller conveyor unit 41 that receives the packaged food f conveyed from the interval adjustment conveyor 33. A pivotal branch 42 that pivotally supports a case 43 in which the starting end of the roller conveyor 41 is connected to the left side of the box 61, and an air cylinder 44 for rotating the roller conveyor 41, which correspond to various defective products. When the information is received, the piston rod 45 of the air cylinder 44 is contracted to rotate the tip side (downstream side) of the roller conveyor portion 41 downward around the pivot portion 42, and there are various defects on the roller conveyor portion 41. The packaged food f is configured to be removed from the distribution line and stored in the dust box 90 below.
If the printed display of the packaged food f is appropriate, the roller conveyor section 41 maintains the horizontal state and delivers the packaged food f to the distribution conveyor on the next continuous distribution line, and finally the weight for transportation. It is aligned with and loaded on a predetermined truck.

Further, as shown in FIG. 6, the dust box 90 is a defective product printed by the first detection unit 52, a defective barcode product by the second detection unit 63, and a defective packaging product by the third detection unit 71 and the fourth detection unit 72. The inside of the box is divided into a defective printing storage box 91 and a defective barcode printing storage box 92 so as to distinguish and store various defective products. In addition, in the bar code printing defective storage box 92, only the packaged food f recognized as a bar code defective product by the identification control unit is stored, and when it is determined as defective at the same time as other printing defective products, packaging defective products, etc. , All are stored in the poorly printed storage box 91.

The dust box 90 is provided with flaps 93 for sorting various defective packaging products into the front and rear boxes 91 and 92. The flap 93 has a base end connected to an electric motor 94, and the packaged food f falling from the defective product exclusion portion 40 is distributed to any of the boxes 91 and 92 according to the rotational operation of the electric motor 94. It is configured to be stored.
By sorting and storing various defective packaging products in this way, it is possible to confirm at which part of the manufacturing process the defects occur according to the quantity of the sorted packaged food f.

The correctness determination device A in the present invention has the same configuration as described above. Hereinafter, a procedure for detecting a packaging defect of the packaged food f using this correctness determination device A will be described.

First, the packaged food f is placed on the terminal edge 31a of the upper conveyor 31, and the product name printed on the front side surface of the packaged food f is imaged by using the front side imaging means 50, and the identification control (not shown) in the case 10 is performed. It is memorized in the department. At this time, as the information to be stored, the character outline of the printed information is acquired as image data and stored in the identification control unit as master data.

Next, the packaged food f is placed near the end of the interval adjusting conveyor 33, and the barcode information printed directly on the back side surface of the packaged food f using the back side imaging means 60 or printed on the sticker affixed to the packaged food f. Is read and stored as master data in an identification control unit (not shown) in the case 10.
Further, the package imaging means 70 stores the separation distance from the peripheral edge portion and the upper end portion of the food packaged in advance as a reference frame in the identification control unit.

Next, a work belt conveyor (not shown) for carrying out the work until the packaging and printing of the packaged food f is completed, and the correctness determination device A are driven.

The packaged food f conveyed by the work belt conveyor and transferred to the belt conveyor mechanism group 30 is printed on the front side surface of the packaged food f near the terminal edge 31a of the upper conveyor 31 constituting the belt conveyor mechanism group 30. The product information is imaged by the first detection unit 52. The first detection unit 52 determines whether or not to take an image by the photoelectric sensor 55 provided in the vicinity of the terminal edge 31a.

The product name information captured by the first detection unit 52 is transmitted to the identification control unit in the case 10 and compared with the master data stored in the identification control unit in the case 10 in advance to print the packaged food f imaged. Check the status and determine the correctness of the printed product name.

The packaged food f, which is imaged with the product name information printed on the front surface side, falls on the lower side conveyor 32 while inverting the front and back surfaces by the rotational moment generated by the natural drop in the packaged food reversing portion 80.

Next, the packaged food f is conveyed toward the downstream side of the distribution line, and is transferred from the lower conveyor 32 to the interval adjusting conveyor 33 while being detected by the photoelectric sensor provided near the terminal edge 32b of the lower conveyor 32. NS.

For the packaged food f transferred to the interval adjusting conveyor 33, the barcode information on the back surface side of the packaged food f is imaged by the second detection unit 63 provided near the terminal edge 33b.

The barcode information captured by the second detection unit 63 is transmitted to the identification control unit in the case 10 and compared with the barcode information stored in the identification control unit in the case 10 in advance to image the packaged food. The correctness of the barcode information of f is determined.

Next, in the packaged food f, the packaging form of the packaged food f is imaged by the third detection unit 71 and the fourth detection unit 72 in the package imaging means 70 provided near the terminal edge 33b. The packaging form of the packaged food f imaged by the third detection unit 71 and the fourth detection unit 72 is the packaging film surrounding the food of the packaged food f imaged by comparing with the reference frame stored in the identification control unit in advance. Correct / incorrect judgment is performed for the form.

Next, in the packaged food f, when at least one of the correct / incorrect determinations imaged by each detection unit is determined to be "erroneous", a control signal is transmitted from the identification control unit to the defective product exclusion unit 40, and the defective product exclusion unit The 40 is driven to be excluded from the distribution line as a defective packaging product, and is stored in the defective printing storage box 91 or the defective barcode printing storage box 92 in the dust box 90.

Further, when all the packaged foods f are determined to be "correct" in the correct / incorrect determination results imaged by each detection unit, the packaged food f is transported to the subsequent process while maintaining the horizontal form of the defective product exclusion unit 40. ..

The correctness determination device A described in the present embodiment does not interfere with the detection and imaging even if a packaging defect occurs in the packaged food f transported by using it in the above-described configuration and procedure, and is further distributed. Regardless of the form of the packaged food f that carries the line, the product name and the identification code displayed on the packaging film of the packaged food f can be reliably detected, and the packaged food f with defective packaging can be excluded from the distribution line.

Although one embodiment of the present invention has been described, the above description is an example of the present invention, and the present invention is not limited to the above-described embodiment. Therefore, it goes without saying that various changes can be made according to the design and the like as long as the technical idea of the present invention is not deviated from the above-described embodiments.

10 Case 11 Operation panel 12 Camera monitor 13 Power switch 14 Operation button 15 Stop button 20 Detection imaging mechanism 30 Belt conveyor mechanism group 31 Upper side conveyor 31a End edge 32 Lower side conveyor 32a Start end edge 32b End edge 33 Interval adjustment conveyor 33b End edge 40 Defective product exclusion part 41 Roller conveyor part 42 Pivot part 50 Front side image pickup means 51 Stay case 52 First detection part 53 Bracket 54 Support bracket 55 Photoelectric sensor 60 Back side image pickup means 61 Box 62 Stay case 63 Second detection part 70 Packaging Imaging means 71 3rd detection unit 72 4th detection unit 80 Packaged food reversing unit 90 Dust box 91 Printing defect storage box 92 Bar code printing defect storage box 93 Flap 94 Electric motor A Correct / incorrect judgment device f Packaged food f1 Tip edge f2 Trailing edge f3 Lower end h Step step m Longest part of the plane

Claims (4)

In the middle of the distribution process of the packaged food, the detection unit is arranged on the upper side so as to capture the printed display on the front side surface of the packaged food.
The printed display on the back side of the packaged food can also be imaged by the upper detection unit. A correct / incorrect determination device for a product name and an identification code displayed on a food packaging sheet, characterized in that an inversion portion is provided. The packaged food reversal part is
It consists of a different level conveyor on the upper side and a conveyor on the lower side.
The front and back sides of the packaged food can be inverted at the stepped portion of both the upper and lower conveyors, which is caused by arranging the rear end edge of the upper conveyor above the starting edge of the lower conveyor. A correct / incorrect determination device for a product name and an identification code displayed on the food packaging sheet according to claim 1. The product name displayed on the food packaging sheet according to claim 1 or 2, wherein the step portion between the upper conveyor and the lower conveyor has a longer distance than the longest flat portion of the packaged food. And the correctness judgment device of the identification code. The first to third claims are characterized in that the detection unit for detecting the packaging state of the food packaging sheet is arranged at the upper position and the side position of the lower side conveyor on the lower side of the distribution of the upper detection unit. A correct / incorrect judgment device for the product name and identification code displayed on the described food packaging sheet.

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