JP2015058382A - Sorting device and sorting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sorting device capable of surely eliminating even a defective product having passed through an inspection from a manufacturing line and a sorting system comprising the same.SOLUTION: When each bagged product having been inspected to be conveyed from an upstream side is sorted on the basis of a result of inspection (good or no-good) performed on each bagged product, it is designed so that at least a preceding bagged product having been inspected and a succeeding bagged product having been inspected following the preceding bagged product are present prior to the sorting. If the inspection result of the succeeding bagged product of the bagged products having been inspected is no good, the bagged product preceding the succeeding bagged product, whose inspection result is good, the succeeding bagged product, whose inspection result is no-good, and further a succeeding bagged product following the succeeding bagged product, whose inspection result is good, are eliminated as defective products.

Description

  The present invention relates to a sorting device that excludes a bag-filled product that has been determined as a defective product by an inspection device, and a sorting system that includes the inspection device and the sorting device.

  In a bag-packed product, contents and seasonings may be bitten into the sealed portion of the bag. If the contents etc. are bitten in the seal part, not only the commercial value will be reduced, but the bag will be incompletely sealed, resulting in the filling gas escaping from the bag and the quality of the contents deteriorated, The bag becomes flat and the contents are crushed. For this reason, a seal defect inspection device and a sorting device are incorporated in this type of production line, and the detected seal failure products are excluded from the production line by the sorting device.

  For example, in the packaging machine described in Patent Document 1 below, when the horizontal sealing machine performs horizontal sealing with a tube-shaped bag sandwiched therebetween, the holding interval is detected by a proximity sensor, and if the detected interval is greater than a predetermined value, It is determined that biting has occurred in the seal portion, and the downstream sorting device eliminates defective products out of the line.

  Moreover, in the X-ray inspection apparatus described in the following Patent Document 2, a seal portion of a bag-filled product is specified based on an X-ray transmission image that has passed through an object to be inspected, and the seal portion is determined based on the gray level of the image of the seal portion. It is determined whether or not the contents or the like have been bitten and the defective products with biting are sorted by a downstream sorting device.

  Furthermore, in the inspection apparatus described in Patent Document 3 below, a package wrapped with a translucent packaging sheet is irradiated with near-infrared rays and the like, imaged with a camera, and foreign matter bites into the seal portion. It is determined whether or not it is rare.

JP 2012-98162 A JP 2005-24549 A JP 2013-7597 A

  However, there are bites that cannot be detected using these inspection devices. For example, when processing processed foods such as snacks that are fragile and tend to generate debris with a vertical pillow wrapping machine, small debris of the contents or seasoning crystals (hereinafter collectively referred to as fine pieces) ) Constantly falls into the bag. For this reason, if these fine pieces are bitten at the seal part of the bag or at the boundary between the seal part and the content storage area, the packaging material at that part becomes thin and the filling gas leaks or there is a pinhole there. Oxygen and moisture in the air flow in. However, in the current state of the art inspection apparatuses, such fine particles are hardly detectable.

  When the bag is sealed by the vertical pillow packaging machine, the upper end of the preceding bag and the lower end of the succeeding bag are horizontally sealed at the same time. As shown in FIG. When the fine piece C of the contents is bitten into the seal portion S2, a region R in which the lateral seal is incomplete is formed around the fine piece C. The imperfect area R may extend not only in the lateral seal portion S2 of the preceding bag A1, but also in the lateral seal portion S1 of the succeeding bag A2 connected thereto. When such a subsequent bag A2 is inspected by the X-ray inspection apparatus in a state separated from the preceding bag A1, since the incomplete seal region R of the subsequent bag A2 does not include the fine piece C, the inspection apparatus , It will be judged as a good product.

  Since the bag having such an incomplete region R has poor sealing performance, the filling gas leaks or tears due to the expansion of the bag due to temperature rise or external pressure. Therefore, it is necessary to eliminate such a defective seal, but the conventional inspection apparatus has a problem that such a defective seal is also overlooked.

  It is an object of the present invention to provide a new sorting apparatus and a sorting system including the new sorting apparatus that can reliably remove defective products that have passed such inspection from the production line.

  If the inspection device detects a biting defect in one bag, the bag before and after the bag connected to the bag is likely to have an undetected sealing defect or biting defect. The sorting device according to the present invention was invented based on the knowledge of the above, and the inspection result of good / bad that was performed on each bag-packed product for each bag-packed product that was transported from upstream A sorting device that sorts based on, and is set up upstream of the device so that there is an inspected preceding bag-filled product followed by a subsequent bag-checked product that is also inspected. If the inspection result of the subsequent bag-packed product is defective, the subsequent bag-packed product, the subsequent bag-packed product, and the subsequent bag-packed product as a defective product Equipped with control means to eliminate The features.

  FIG. 2 is an explanatory diagram of the present invention. In this figure, it is assumed that the sorting apparatus 10 is arranged immediately after the exit of the inspection apparatus 100, and the bag-packed products B1 to B4 to be inspected are transported in the arrow direction F in a single row of columns at regular intervals. The inspection device 100 ends the inspection when the bag-filled products B1 to B4 pass the line R1 indicated by the alternate long and short dash line, and the inspection result is immediately transmitted to the sorting device 10 and stored in the built-in memory. Shall be.

Moreover, line R2 shown with the dashed-dotted line which traverses the sorting apparatus 10 shows a sorting start point, and when the bag-filled products B1 to B4 reach the start point R2, the inspection results of the bag-filled products B1 to B4 that have arrived. (“Good” “bad”) is read from the memory, and based on this, the bag-filled products B1 to B4 are either excluded from the line or not. Therefore, in the present invention, upstream of the sorting start point R2 of the sorting apparatus 10, there is at least the preceding bag-packed product B2 that has finished the inspection before sorting, and the subsequent bag-packed product B3 that follows it. It is set to be.
In FIG. 2, there are two bag-packed products B2 and B3 between the line R1 and the sorting start point R2. However, in the implementation, the interval between the line R1 and the sorting start point R2 is further increased. It is good to set it apart so that at least three or more of the packaged products B exist between them. In this way, even if the product interval is increased and the number of products is reduced to two, it is possible to cope with a margin.

  Under such settings, in FIG. 2, if the inspection result of the preceding bag-packed product B2 stored in the memory is “good” and the inspection result of the subsequent bag-packed product B3 is “bad”, the control is performed. The means rewrites the inspection result of the preceding bag-packed product B2 from “good” to “bad” based on the inspection result (“defective”) of the subsequent bag-packed product. Furthermore, even if the subsequent inspection for the bag-packed product B4 has not been completed, the bag-packed product B4 is suspected to have a sealing failure or a bite failure. Rewrite as “bad”. When the preceding bag-filled product B2 reaches the sorting start point R2, the rewritten “defective” inspection result is read from the memory, and the sorting arm 11 is driven based on the result, and the preceding bag-packing product B2 is read. Product B2 is excluded from the line. The subsequent succeeding bag-packed product B3 is also excluded from the line because the inspection result is “bad”, and the subsequent succeeding bag-packed product B4 is similarly excluded from the line.

  As described above, in the sorting apparatus 10 of the present invention, not only the bag-packed product B3 whose inspection result is “defective” but also the bag-packed products B2 and B4 before and after that are regarded as defective products and excluded. is there. As a result, products having a sealing failure or a biting failure that cannot be detected by the conventional inspection apparatus 100 are excluded from the line, thereby reducing the risk that an overlooked defective product will be on the market.

  As the sorting apparatus 10 used here, in addition to the arm type shown in FIG. 2, a drop belt type that switches the belt conveyor from a horizontal posture to a downward inclination and discharges, an air jet type that blows away defective products with air, and further There is a pusher type in which the pusher is advanced and retracted in a direction perpendicular to the conveyance direction of the bag-packed product and the bag-packed product is discharged to the side in the conveyance direction, and these can be used properly according to the characteristics of the bag-packed product.

  The sorting system according to the present invention individually inspects bag-packed products and inspects the biting of contents into the seal portion, and individual bag-packed products conveyed from the inspection device, A sorting system including a sorting device that sorts based on the inspection result of the bag-packed product, and between the testing device and the sorting device, a pre-tested bag It is set so that there is a stuffed product followed by a subsequent bag product that has been inspected, and the sorting device has the inspection of the subsequent bag stuffed product among those bagged products. If the result is defective, it is provided with a control means for eliminating the preceding bag-packed product, the subsequent bag-packed product, and the subsequent bag-packed product as a defective product. .

  In the sorting apparatus or the sorting system according to the present invention, the inspection result of the bag-packed product before and after the bag-packed product whose inspection result was “defective” among the inspected bag-packed products from “good”. Although it is rewritten as “defective”, if the inspection result of the subsequent bag-packed product before rewriting is “defective”, it is not necessary to rewrite it as “defective”. The stuffed product is subject to rewriting. If the inspection result is also “defective”, the succeeding bag-packed product is to be rewritten. In this way, a product having a sealing failure or a biting failure that cannot be detected by the inspection apparatus 100 is surely excluded from the inspection line, and the risk that the defective product is on the market is reduced.

As an inspection apparatus used here, for example, a proximity sensor described in Patent Document 1 detects the biting of the contents into the seal part, or an X-ray inspection apparatus described in Patent Document 2 applies to the seal part. What inspects biting can be used. Furthermore, an inspection device that inspects biting of the contents into the seal portion by irradiating the bag-filled product with near infrared light described in Patent Document 3 can also be used.
Further, as the sorting device 10 used in this sorting system, as described above, sorting devices such as an arm type, a drop belt type, an air jet type, and a pusher type can be used.

  According to the present invention, even defective seals and bites that cannot be detected by the inspection device can be excluded from the inspection line. Shipping can be reduced.

When biting occurs in the lateral seal portion S2 of the continuous bags A1 and A2, the incomplete seal region R also extends in the lateral seal portion S1 of the succeeding bag A2 connected thereto. Explanatory drawing of this invention. The schematic block diagram of one Embodiment of the distribution system which concerns on this invention. In the said embodiment, the top view which shows the conveyance state of bagging goods. The configuration block diagram of the embodiment. The rewrite explanatory drawing of the test result memorize | stored in memory. The rewrite explanatory drawing of the test result memorize | stored in memory. The flowchart which rewrites a test result in the said embodiment. In the said embodiment, the flowchart of a distribution process.

  Hereinafter, an embodiment of a distribution system according to the present invention will be described with reference to the drawings.

FIG. 3 shows a schematic configuration diagram of an embodiment of a distribution system 1 using an X-ray inspection apparatus as an inspection apparatus. FIG. 4 is a plan view showing a state in which the bag-packed product B transported by the distribution system 1 is transported.
In these drawings, the conveyor 20 is connected to the entrance side of the X-ray inspection apparatus 100, and the sorting apparatus 10 is connected to the exit side. Further, a conveyor 30 connected to the shipping line is connected to the outlet side of the sorting apparatus 10. And the bag-packed product B conveyed from the upstream packaging machine is carried into the X-ray inspection apparatus 100 via the conveyor 20, where the biting inspection of the contents in the seal portion is performed, and the inspection is completed. The bag-packed product B is conveyed to the sorting device 10 as it is. Further, the inspection result for the packaged product B is transmitted to the sorting device 10 and stored in the built-in memory M (see FIG. 5) every time the inspection is completed.

  The sorting apparatus 10 includes a sorting arm 11 that swings in a horizontal plane to remove the bag-packed product B out of the line, a drive unit 12 (see FIG. 5) that drives the sorting arm 11, and a bag-filled product. Based on the conveyor 13 that transports B, the photoelectric sensor 14 that detects the packaged product B that is transported on the entrance side of the conveyor 13, and the inspection result stored in the memory M (see FIG. 5) A control means 15 (see FIG. 5) that rewrites the inspection result of the power-packed product B or controls the driving unit 12 based on the inspection result and the detection output of the photoelectric sensor 14 and the entire apparatus 10 are supported. Support legs 16 are provided.

  The sorting arm 11 has a rotating shaft of the arm 11 attached to a side portion of the conveyor 13, and a driving unit 12 (see FIG. 5) composed of an air cylinder, a motor, or the like is attached to the rotating shaft. The product is moved between a position along the conveyance direction F and a distribution position (a position indicated by a solid line in FIG. 4) that obstructs the bag-filled product B diagonally, and the bag-filled product B determined as a defective product is excluded from the line. Is configured to do.

  As shown in FIG. 4, the photoelectric sensor 14 includes a light projector 14 a that emits light and a light receiver 14 b that receives the irradiated light, and the light irradiated from the light projector 14 a is blocked by the bag-packed product B. When it becomes impossible to detect the light by the light receiver 14b, the control means 15 determines that the bag-filled product B has arrived at the detection line R3 and starts a sorting timer. When the timer measures a predetermined time and the time is up, the bag-packed product B arrives just before the sorting start point R2 in FIG. 4, and the control means 15 immediately stores the inspection result of the bag-packed product B in the memory M. To determine whether to drive the sorting arm 11.

  In FIG. 4, when the bag-filled product B5 passes the line sensor 140 of the X-ray inspection apparatus 100, the X-ray inspection apparatus 100 immediately starts a bite inspection, and the bag-filled product B5 is a line R1 indicated by a one-dot chain line. Is passed, the inspection for the bag-packed product B5 is completed at that time, and the inspection result S is immediately transmitted to the sorting apparatus 10.

  FIG. 5 is a configuration block diagram of an embodiment of the sorting system 1 including the X-ray inspection apparatus 100 and the sorting apparatus 10. In this figure, the control means 15 of the distribution apparatus 10 is comprised with a computer, and is connected to the above-mentioned drive part 12 and the conveyor 13, and drives these. Further, the control means 15 is connected to the photoelectric sensor 14 and constantly monitors its output, and when the packaged product B is detected thereby, the above-described sorting timer is started. Further, the reception port is also constantly monitored, and if an inspection result is transmitted from the X-ray inspection apparatus 100, it is stored in the memory M. Furthermore, the control means 15 determines which bag-packed product B is a defective product based on the inspection result stored in the memory M, and uses the inspection result stored in the memory M for the determined defective product. rewrite.

  6 and 7 are explanatory diagrams for rewriting the inspection result stored in the memory M. FIG. In these drawings, the inspection result transmitted from the X-ray inspection apparatus 100 is first written in the buffer memory m0. Then, for the distribution process, when the inspection result of the top packaged product B, for example, the packaged product B2 shown in FIG. 4, is read from the memory m3, the contents of the memory m2 are stored in the memory m3 and the contents of the memory m1. Are sequentially shifted to the memory m2 and the contents of the buffer memory m0 to the memory m1. Thus, in the arrangement of FIG. 4, the inspection result of the leading packaged product B3 is stored in the memory m3, the inspection result of the subsequent packaged product B4 is stored in the memory m2, and the subsequent inspection of the subsequent packaged product B5. The results are stored in the memory m1.

  When the contents of the memories m0 to m2 are shifted to the next memories m1 to m3 in this way, at that timing, the control means 15 is based on the inspection result of the subsequent bagging product B, that is, in the example of FIG. Based on the inspection result (contents of the memory m2) of the second bagging product B4 from the top, the inspection result (contents of the memory m3) of the top bagging product B3 and the inspection result (memory of the third bagging product B5) Whether to rewrite (content of m1) is determined. Then, as shown in FIG. 6, if the inspection result (contents of the memory m2) of the second bag-packed product B4 is “defective”, the inspection result of the first bag-packed product B3 is changed from “good” to “bad”. If the inspection result of the subsequent third packaged product B5 is also “good”, it is rewritten to “bad”. Note that a flag indicating the rewriting is attached to the rewritten inspection result (in FIG. 6, this flag is represented by a black circle).

  Then, when the preceding bag-filled product B3 arrives just before the sorting start point R2, the contents of the memory m3 corresponding to it are read, and if it is “defective”, the sorting arm 11 at the initial position is read. Is driven to move to the sorting position. If it is “good”, the sorting arm 11 in the initial position is not driven, but if it is not in the initial position but in the sorting position, the sorting arm 11 is reversed. Driven back to the initial position. When the sorting arm 11 is in the sorting position, as shown in FIG. 4, the sorting arm 11 blocks the path of the packaged product B, so that the packaged product B moves obliquely along the sorting arm 11. While discharged from the line.

  In this way, a new inspection result is written in the buffer memory m0, and when the first bag-filled product B reaches the sorting start point R2 and is read, the contents of each memory m0-m2 are stored in the next memory m1-m3. Based on the contents of the second memory m2, it is determined whether to rewrite the inspection results of the memory m3 and the memory m1. At this time, as shown in FIG. 7, when the inspection result stored in the memory m2 is rewritten from “good” to “bad”, it can be determined from the flag (in FIG. 7, the black circle is the flag. In this case, the previous and subsequent memories m3 and m1 are not rewritten.

  In FIG. 4, there are three inspected bag-filled products B <b> 3 to B <b> 5 upstream from the sorting start point R <b> 2, but in FIGS. 6 and 7, three memories m <b> 1 to m <b> 3 are provided. If this becomes two, two memories will be provided. However, a counter that counts the number of inspected products is prepared without fixing the number of memories, and when the inspection is completed and the inspection result is written to the buffer memory m0, the count value is incremented by 1 and the distribution start point When the inspection result is read out after reaching R2, the count value may be set to -1, so that the number of products from the line R1 to the sorting start point R2 can be grasped from the count value. In this way, since the bag-packed product immediately before the distribution and the subsequent bag-packed product can be specified, it is possible to sufficiently cope with the occurrence of missing teeth in the bag-packed products that are aligned and conveyed. .

  For example, in FIG. 4, when the second bag-packed product B4 from the top is missing and only the first bag-packed product B3 and the subsequent bag-packed product B5 exist as the inspected products B, the memory m2 Stores the inspection result of the top-packed product B3, and the memory m1 stores the inspection result of the bag-packed product B5. In such a case, since the count value immediately before distribution is 2, it is determined whether or not to rewrite the inspection result of the top packaged product B3 based on the inspection result of the second packaged product B5 counted from the top.

  Further, when the packaged product B is detected by the photoelectric sensor 14, a sorting timer is started. When the time is up, the packaged product B reaches immediately before the sorting start point R2 (see FIG. 4). Therefore, the memory in which the inspection result of the first packaged product B is stored is specified from the count value at that timing, and the inspection result may be read therefrom.

  Returning to FIG. 3, the X-ray inspection apparatus 100 transmits X-rays to the shield box 110 that shields X-rays, the transport conveyor 120 that is bridged between the entrances and exits of the seal box 110, and the bag-packed product B that is transported. An X-ray irradiation means 130 for irradiating, a line sensor 140 for detecting the irradiated X-rays, a touch panel 150 for setting operating conditions and inspection conditions by operating an operation screen, and a control unit 160 for controlling these (FIG. 5). And a support leg 170 that supports the entire apparatus including the shield box 110.

  The conveyance conveyor 120 is configured by a belt conveyor that extends between the entrance and the exit of the shield box 110, and is configured to convey the bag-packed product B at a set speed. Further, the entrance and the exit are respectively provided with shield warming (not shown) for preventing X-ray leakage.

  The X-ray irradiation means 130 irradiates an X-ray tube (not shown) stored in the shield box 110 and X-rays irradiated from the X-ray tube in a fan shape in a direction perpendicular to the conveying direction of the packaged product B. It comprises a collimator (not shown). Then, the X-rays irradiated toward the line sensor 140 pass through the bag-filled product B and the belt of the conveyor 120 and are input to the line sensor 140.

  The line sensor 140 is composed of a plurality of linear photodiodes arranged in a direction perpendicular to the carrying direction of the bag-packed product B, and a plurality of scintillators stacked thereon, and passes through the bag-packed product B. X-rays are converted into light by each scintillator, and the light is converted into an electric signal by each photodiode and output as an X-ray transmission signal. The X-ray transmission signal output in this way is converted into a digital quantity by an A / D converter (not shown) and then input to the control unit 160 in FIG.

  The control unit 160 of FIG. 5 is configured by a computer, and is configured to be connected to and controlled by the transport conveyor 120, the X-ray irradiation unit 130, the line sensor 140, and the touch panel 150. Further, the inspection result S is connected to the distribution device 10 and is configured to transmit the inspection result S to the distribution device 10.

  The touch panel 150 is composed of a full-dot liquid crystal display, and by operating a setting screen displayed on the touch panel 150, the X-ray inspection apparatus 100 can be started and stopped, and necessary operation conditions and inspection conditions can be set. It has become. For example, on the initial screen before the start of operation, operation conditions such as the conveyance speed of the transfer conveyor 120 and the X-ray intensity of the X-ray irradiation means 130 can be set. On the reservation screen after the start of operation, for example, an X-ray transmission image It is possible to set the detection sensitivity, the bag size for specifying the seal part, the dimension of the seal part, and the like.

  The memory of the control unit 160 configured by a computer stores various programs for performing a biting inspection and a foreign matter mixing inspection on the seal portion of the bag-packed product B, and by executing these programs, the biting inspection and the foreign matter are performed. A mixture inspection is performed. For example, when the image generation program is executed, the X-ray transmission signal input from the line sensor 140 is generated into a two-dimensional X-ray image, and when the contour extraction module is executed, the X-ray image of the bag-filled product B When the seal area specifying module is executed and the seal area specifying module is executed, the seal area in the X-ray image is specified from the preset dimension information of the seal portion.

  When the seal area is specified in this way, the bite inspection is performed on the area. Specifically, the image data of the seal area is binarized with a preset threshold value, and an image of only fragments is extracted. In general, since the content fragments have a lower X-ray transmission amount than the packaging material, the touch panel 150 is located near an intermediate level between the X-ray transmission amount of the packaging material and the X-ray transmission amount of the content fragments. If a threshold value is set, a portion having an X-ray transmission amount lower than the threshold value is extracted as a fragment of the content. When the bite inspection of the seal area is completed in this way, the control unit 160 transmits a “good” / “bad” signal S indicating the inspection result to the sorting apparatus 10.

  Next, the operation of the sorting apparatus 10 according to this embodiment will be described. Here, as shown in FIG. 4, the sorting operation will be described on the assumption that the packaged products B are transported in a single row.

First, before the operation is started, it is confirmed whether or not there are two or more packaged products B between the position of the line R1 shown in FIG. 4 and the sorting start point R2.
The inspection time required for one bag-packed product B is determined by the processing capacity of the control unit 160 and the size of the bag-packed product B. This type of inspection time can be accommodated in about several tens of milliseconds. Since the speed is also known, the travel distance until the packaged product B that has passed through the line sensor 140 reaches the line R1 is about several tens of millimeters. This is the distance from the line sensor 140 to the line R1. By subtracting this distance from the known distance from the line sensor 140 to the sorting start point R2, the distance from the line R1 to the sorting start point R2 can be grasped.
Next, the maximum interval of the bag-packed products B to be conveyed is confirmed, and there are two or more, preferably three or more bag-packed products B between the line R1 and the sorting start point R2. Check whether or not. If the number is less than 3, an auxiliary conveyor may be inserted between the X-ray inspection apparatus 100 and the sorting apparatus 10.

  When the operation is started after such initial setting, the packaged product B is carried into the X-ray inspection apparatus 100 in a single row as shown in FIG. When the packaged product B passes through the line sensor 140, the control unit 160 generates a two-dimensional X-ray image based on the X-ray transmission signal, and performs a biting inspection on the seal portion based on the X-ray image. The inspection result is transmitted to the sorting apparatus 10 as a “good” or “bad” signal S.

FIG. 8 shows a storage process of the inspection result by the control means 15 of the distribution device 10 and a flowchart for rewriting it, and FIG. 9 shows a flowchart of the distribution process for distributing the products based on the inspection result.
In these figures, the control means 15 first checks the reception port in step S1 to confirm the presence or absence of transmission. If there is no transmission, the process proceeds to the distribution process of FIG. 9, and if there is transmission, the received inspection result is written in the buffer memory m0 (step S2). Next, it is checked whether or not the preceding bag-packed product has been distributed (step S3). For example, in the example of FIG. 4, if the inspection result of the top packaged product B3 has been read from the memory m3, it is determined that the distribution has ended. If not completed, the contents of the memory m3 cannot be updated. Therefore, the process returns to the first step S1, and if completed, the contents of the memory m2 are stored in the memory m3, the contents of the memory m1 are stored in the memory m2, and the buffer memory m0 is stored. The contents are sequentially shifted to the memory m1 (step S4).

  Subsequently, in step S5, the control means 15 reads the inspection result of the second bag-packed product B4 from the first bag-packed product B3 from the memory m2, and if it is “good”, does nothing and does the first. Returning to step S1, if it is “defective”, it is checked with a flag whether or not it is a rewritten “defective” (step S6). If the flag is set, it is a rewritten “defective”, so the process proceeds to step S1 as it is, and if the flag is reset, the inspection result (contents of the memory m3) of the first bag-packed product B3 is displayed. Check (step S7). If it is “good”, the contents of the memory m3 are rewritten to “bad” and the flag is set (step S8). If it is “bad”, it is not necessary to rewrite it. The inspection result (contents of the memory m1) of the th-packed product B5 is checked (step S9). If the result of the check is "good", the contents of the memory m1 are rewritten to "bad" and the flag is set (step S10). If it is "bad", the contents of the memory m1 are not rewritten. Return to the original step S1.

  Next, a case where the process moves to the distribution process of FIG. 9 will be described. The control means 15 first checks the output of the light receiver 14b in step S11 to confirm whether or not the bag-packed product B is blocking the detection line R3. If it has been shut off, it is checked in step S12 whether or not the distribution timer has been started. If it has not been started, the distribution timer is started in the next step S13. In step S14, it is checked whether or not the distribution timer has expired.

  On the other hand, if the bag-filled product B is not detected in the check in step S11, either the bag-filled product B has passed the detection line R3 or has not yet arrived at the line R3. The process proceeds to S14 to check whether or not the distribution timer has expired. If the time has not expired, the process jumps to step S3 in FIG. 8. If the time has expired, the inspection result of the first bag-packed product B3 is read from the memory m3 (step S15), and distribution is performed based on the contents. It is determined whether or not to drive the arm 11 (step S16).

  That is, if the content of the memory m3 is “bad”, it is checked in step S17 whether the sorting arm 11 is in the initial position or the sorting position. If it is in the distribution position, there is no need to drive the distribution arm 11, so the process returns to step S11 without doing anything, but if it is in the initial position, the distribution arm 11 is driven and moved to the distribution position ( Step S18). As a result, the sorting arm 11 obliquely blocks the path of the packaged product B and discharges it outside the line.

If the content of the memory m3 is “good”, it is checked in step S19 whether the sorting arm 11 is in the sorting position or the initial position. If it is in the initial position, the process returns to step S11 without doing anything, but if it is in the distribution position, the distribution arm 11 is returned to the initial position to pass a normal product (step S20). While repeating such a series of processes, the inspection result of the packaged product B that is suspected of having a sealing failure or a bite failure is rewritten to “defective” and excluded from the line together with the true defective product.
In this flowchart, after steps S17 to S20, the process returns to the original step S11. Alternatively, the process may jump to step S3 in FIG.

In the above embodiment, the description has focused on bite inspection, but the X-ray inspection apparatus 100 can also perform foreign matter mixing inspection, missing part inspection, and the like. In that case, as the sorting device 10, a sorting device that sorts bag-packed products into two or three directions is used, and from the X-ray inspection device 100, apart from the aforementioned “good” and “bad” signals, By sending signals with foreign matter or signals with missing parts, the sorting device is different as a biting defective product, as a foreign matter mixed product, or as a defective product based on those signals. You may make it discharge in the direction.
In addition, a bag-filled product that has been determined to be bitten by the inspection device and a bag-packed product that has been rewritten as “good” for the “good” inspection result are sorted in different directions, and a seal failure or bite failure is suspected. An operator may re-inspect the product that has been removed afterwards.

Further, in the above embodiment, in order to identify the subsequent bag-packed product following the preceding bag-packed product, the second bag-packed product from the top is specified as the subsequent bag-packed product. The bag-packed product immediately after the result is obtained, for example, the bag-packed product B3 in FIG. 2 or the bag-packed product B5 in FIG. 4 is specified as the subsequent bag-packed product, and based on the inspection result, the bag-packed product before and after that In FIG. 2, it may be determined whether or not the inspection results of the products B2 and B4 and in FIG. 4 the products B4 and B6 are rewritten.

B Bag-packed product 1 Sorting system 10 Sorting device 15 Control means 100 Inspection device

Claims (3)

  A sorting device that sorts individual inspected products that have been transported from upstream based on the results of good / bad inspection performed on each of the packed products, and on the upstream side of the device, It is set so that there is an inspected preceding bag product followed by a subsequent inspected bag product, and if the inspection result of the subsequent bag product is defective among those bag products For example, the sorting apparatus includes a control unit that excludes the bag-packed product preceding the bag-packed product, the subsequent bag-packed product, and the subsequent bag-packed product as a defective product.   An inspection device that individually inspects bag-packed products and inspects the biting of contents into the seal part, and individual bag-packed products conveyed from the inspection device are performed on each bag-packed product. A sorting system with a sorting device that sorts based on the inspection result, between the testing device and the sorting device, the inspected preceding bagging product, and the subsequent inspected If the inspection result of the succeeding bag-packed product is defective among the bag-filled products, the preceding bag is set in the sorting device. A distribution system comprising: a control unit that excludes a stuffed product, the subsequent bag-packed product, and a subsequent bag-packed product as a defective product. The control means, if an inspection result of a further subsequent bag-packed product following the subsequent bag-packed product is defective, further subsequent bag-packed products are excluded as defective products. The distribution device according to claim 1 or the distribution system according to claim 2.

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