JP2008207916A - Method and device for detecting foreign matter adhered to bag article and detection and removal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for detecting deposition of a foreign matter and a device for removing a bag article adhered with a foreign matter when the foreign matter such as a cut chip is adhered to the bag article. <P>SOLUTION: A conveying means 15 for feeding the bag article 6 to a thickness detection position; and a foreign matter detection means 16 for measuring thickness while conveying the bag article 6 fed by the conveying means by a drive roller 23 and thickness detection rollers 24A, 24B and comparing the obtained measurement value with a previously set reference value to discriminate existence of adhesion of the foreign matter are provided. The foreign matter detection means discriminates whether or not the foreign matter such as the cut chip 9 is adhered to the bag article 6, and in the case of adhesion of the foreign matter is found, the bag article adhered with the foreign matter is discharged to an inferior good reservoir 8 by a rejection device 36 downstream. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a method and apparatus for detecting whether or not foreign matter such as cutting residue is attached to a bag-making product (plastic bag) formed by making a plastic film, and detecting the foreign matter attached to the bag-making product, The present invention relates to a bag-made product foreign matter detection and removal device that removes detected foreign matter together with a bag-made product.

  Plastic bags (hereinafter referred to as bag-making products) mainly used for pharmaceuticals, retort foods, and liquid detergent refill bags are stacked on top of each other and transported intermittently in the longitudinal direction. It is manufactured by a bag making machine that heats and compresses a part using a hot plate heated at every intermittent feed, and cuts and punches it into a predetermined shape by a cutting mechanism such as a cutter (for example, JP-A-6-170989). No. publication). In addition, after handling the bag, it is possible to perform round corner cutting (corner cut) that rounds the four corners of the bag-made product so that the fingers will not be torn at the corner when handling such as opening. (For example, refer to Japanese Patent Laid-Open No. 62-160231). Furthermore, the process which rounds a corner | angular part may be performed in-line within a bag making machine.

  By the way, the bag-making product manufactured in this way may have foreign matter such as cutting residue generated in the cutting process or the like, and it is collected in a bundle with the foreign matter attached and sent to the next process. Sometimes caused trouble in the next process. In particular, when the in-line processing is performed in the bag making machine to round the corners, a considerably long cut residue is generated, and the cut residue is mixed into the width of the bag product and sent to the subsequent process. May cause a big trouble in the subsequent process. The reason why this long cut residue is generated will be briefly described. FIG. 5 is a schematic plan view schematically showing a state in which plastic films are overlaid, a predetermined region is heat-sealed, cut and bag-formed. The overlapped plastic film 1 is intermittently conveyed in the direction of arrow A, the area 2 indicated by hatching 2 is thermocompression bonded, the area indicated by reference numeral 3 is then punched and removed, and then a cutting blade (guillotine blade) is formed. By cutting the position of the cutting line 4 and then moving a little to cut the position of the cutting line 5, the bag-made product 6 is formed. Here, the reason why the cutting blade cuts the positions of the cutting lines 4 and 5 (referred to as double cutting) is to prevent any trouble even if a slight error occurs in the cutting position. That is, when cutting the bag-making product 6 by single cutting (single cut), as shown in the enlarged view, it is necessary to accurately cut the position passing through the corner 7 formed by punching first. In many cases, the cutting position B deviates from the corner 7, and for this reason, a protrusion 8 called a shoulder or a corner is formed on one bag-made product 6, resulting in a defective product. Therefore, by cutting the position where the corner 7 is sandwiched (the position indicated by the cutting lines 4 and 5), even if a slight error occurs in the position of the cutting lines 4 and 5, the protrusions 8 called shoulders and corners are not generated. ing. As a result of performing the double cut in this way, the region sandwiched between the cutting lines 4 and 5 becomes the cut residue 9, and a considerably long cut residue is generated.

  Normally, the scrap 9 is collected in a dust collector installed at the lower part of the guillotine blade, but it adheres to the guillotine blade due to factors such as static electricity, blade deterioration, and insufficient cooling of the heat seal part (heat-stored plastic film). However, it may be delayed in dust collection, and it will be attached to the plastic film at the next cutting and sent out in a state of adhering to the bag-making product 6 that is intermittently cut and discharged, and mixed into the bag bundle. There was a case.

  As a countermeasure, many static eliminators have been installed near the guillotine blade. However, even if a static eliminator is provided, it is difficult to reliably eliminate static electricity charged on the front and back of the plastic film. It is difficult to reliably achieve adhering of cut waste and prevention of discharge due to issues such as the introduction of equipment and instruments, installation space, and cost. In addition, with regard to the cooling of the heat seal part, in order to obtain sufficient cooling, problems such as securing of installation space and cost due to the addition of a cooling press plate unit, etc. occur. It is difficult to prevent adhesion and discharge. Regarding the blade deterioration factor, it is difficult to fundamentally prevent the cutting waste from being discharged due to wear over time.

  Further, a cutting blade having a minute air ejection hole provided on the lower surface of the guillotine blade has been proposed (see, for example, Japanese Patent Application Laid-Open No. 2002-36183). The cut residue could not be separated reliably and mixing of the cut residue occurred.

Thus, at present, a method for reliably preventing the mixing of cut waste generated by cutting twice is not established, which is a difficult problem. Therefore, foreign matters such as cutting waste due to these cuttings are mixed in the bundle of bag-made products, which is an obstructive factor for the inspector's incidental work and productivity.
Japanese Patent Laid-Open No. 6-170989 Japanese Patent Laid-Open No. 62-160231 JP 2002-36183 A

  The present invention has been made in view of such a situation, and when a foreign matter such as a cutting residue is attached to a bag-made product, the method and apparatus for detecting the adhesion of the foreign material, and the bag-made product are attached. It is an object of the present invention to provide a bag-made product foreign matter detection / removal device that detects a foreign material and removes the foreign material together with the bag-made product.

  In the method of the present invention, in order to detect whether foreign matter has adhered to the bag-made product, the step of conveying the bag-made product through the thickness detection position, and the thickness of the bag-made product being conveyed are measured. The measurement value obtained by the measurement is compared with a reference value set in advance, and a foreign matter detection process for identifying whether or not foreign matter is attached is provided.

  In order to carry out the above-described method, the present invention device measures the thickness of the bag-making product while conveying the bag-making product fed to the thickness detecting position, and the bag-making product fed by the transport means, Comparing a measured value obtained by measurement with a reference value set in advance, it is provided with a foreign matter detection means for identifying whether or not foreign matter is attached, the foreign matter detection means comprising a drive roller provided at a fixed position, and the drive roller A thickness detection roller disposed so as to be able to move up and down and to convey the bag-made product between the drive roller and a thickness detection unit that measures a height position of the thickness detection roller The thickness of the bag-making product passing between the driving roller and the thickness detection roller is measured from the signal from the roller height measurement means and the thickness detection roller height measurement means, and the obtained measurement value is set in advance. Identifies whether foreign matter is attached or not compared with the reference value It is obtained by a structure that comprises a separate unit.

  Here, the drive roller has a length equal to or longer than the full width of the bag making product so as to support and convey the full width of the bag making product, and the thickness detection roller has a shorter length than the drive roller. It is preferable that two are used and the two thickness detection rollers are provided so as to be in contact with different regions in the width direction of the drive roller.

  In that case, provided with a driving roller for security and a security thickness detecting roller arranged in a region that can cover the gap between the two thickness detecting rollers and downstream of the driving roller and the two thickness detecting rollers, Measure the thickness of the bag-making product while transporting the bag-making product, and compare the measured value with the reference value set in advance to provide a foreign object detection means for security. Is preferred.

  It is also preferable to provide a neutralizing blower that blows air upstream of the drive roller and thickness detection roller so as to change the direction of the elongated foreign matter adhering to the bag-made product in parallel with the conveying direction.

  Furthermore, instead of providing the security foreign matter detection means including the security drive roller and the security thickness detection roller, the drive roller and the thickness detection roller are provided at two different locations in the carrying direction of the bag making product, respectively. The thickness detection rollers provided in the configuration may be arranged so that the end portions of the thickness detection rollers are not in contact with each other in the width direction and the end portions of the thickness detection rollers are in contact with each other.

  The bag-made product foreign matter detection / removal device of the present invention is arranged on the downstream side of the above-described bag-made product foreign matter detection device and based on a signal from the bag-made product foreign matter detection device, The apparatus has a reject device for separating from a bag-made product without foreign matter adhesion.

  According to the bag product adhering foreign matter detection method and apparatus having the above configuration, the thickness of the bag product is measured while being transported and compared with a reference value. It can be identified whether or not a foreign material such as a cutting residue adheres to the product and is thick, and thereby a bag-made product to which the foreign material is attached can be identified. By combining a reject device with the bag-made product-attached foreign matter detection device, the detected foreign-material-attached bag-made product can be removed, and a bag-made product free from foreign matter can be obtained.

  Hereinafter, preferred embodiments of the present invention will be described. FIG. 1 is a schematic plan view of a bag-made product foreign matter detection / removal device equipped with a bag-made product foreign matter detection device according to an embodiment of the present invention, FIG. 2 is a schematic side view thereof, and FIG. It is C arrow schematic sectional drawing. 1 to 3, a bag-made product foreign matter detection / removal device according to the present embodiment includes a bag-made product foreign matter detection device (hereinafter abbreviated as a foreign matter detection device) 11 and a reject device arranged downstream thereof. 36 is arranged downstream of the cutting part 13 of the bag making machine 12. This bag-making machine 12 is for making in-line bag-making products 6 with rounded corners in the same way as described with reference to FIG. 5, and the cutting blade 14 provided in the cutting part 13 is heated. The plastic film 1 that has been subjected to predetermined processing such as sealing and punching is provided with a function of cutting it twice and separating it as a bag product 6. However, the bag making machine 12 is a single row discharge device that discharges the bag making products 6 one by one.

  The foreign object detection device 11 receives the bag-made product 6 cut by the cutting unit 13, and transports the bag-made product fed to the thickness detection position by the transport means 15 and the bag-made product fed by the transport means. On the other hand, there is provided a foreign matter detection means 16 for measuring the thickness of the bag-made product and comparing the measured value obtained by the measurement with a preset reference value to determine whether or not foreign matter is attached. The transport unit 15 includes a transport belt 18, a roller 19 that supports and travels the transport belt 18, and a drive motor 20. A pair of guide plates 21 is disposed above the conveyor belt 18 and is configured to position and guide the bag-made product 6 fed from the bag-making machine 12 in the width direction. The pair of guide plates 21 is provided so that the position thereof can be adjusted in the apparatus width direction, and can be adjusted to the width dimension of the bag-made product. The conveying means 15 is not limited to the illustrated one, and may be configured to perform suction conveyance by providing a vacuum chamber under a conveyance belt having a hole. In the case of a configuration in which suction conveyance is performed, the pair of guide plates 21 may be omitted because the bag-making product being conveyed does not move in the width direction.

  The foreign matter detection means 16 is disposed so as to be movable up and down so as to convey the bag-made product 6 between the drive roller 23 provided at a fixed position and the drive roller 23 between the drive roller 23 and the drive roller 23. The two thickness detection rollers 24A and 24B, the lifting shafts 25A and 25B that can be moved up and down by holding the thickness detection rollers 24A and 24B, and the height detection positions of the thickness detection rollers 24A and 24B are measured. Thickness detection roller height measuring means (not shown) is provided. As the thickness detection roller height measuring means, a displacement sensor, a micrometer head or the like that can measure the movement change amount of the lifting shafts 25A and 25B can be used, and the lifting movement amount can be measured with high accuracy. preferable. Since the thickness detection rollers 24A and 24B described above are provided so as to be movable up and down, when the bag making product 6 passes between the drive rollers 23, the thickness detection rollers 24A and 24B are raised and lowered according to the thickness of the bag making product 6, If foreign matter such as cutting residue 9 adheres to the bag-made product 6, the bag is moved up and down according to the total thickness including the thickness of the foreign matter. Therefore, by measuring the position in the height direction of the thickness detection rollers 24A and 24B, the thickness of the bag-made product 6 (including the thickness of the adhered foreign matter) can be measured.

  The drive roller 23 is configured to be rotationally driven by a drive motor 26 so as to convey the bag-made product 6, and the length of the drive roller 23 can support and convey the full width of the maximum-sized bag-made product to be inspected. As such, it is determined to be more than the full width of the bag-making product. The two thickness detection rollers 24A and 24B are formed of rotatable rollers, are made shorter than the driving roller 23, and are provided so as to be in contact with different regions of the driving roller 23 in the width direction. Yes. Here, the two thickness detection rollers 24A and 24B are used in order to be applicable to a stand pouch bag 6A having a bottom material as shown in FIG. is there. The stand pouch bag 6A includes a body portion 6a having only the front and back film material 1a, and a bottom material portion 6b having the front and back film material 1a and the bottom material 1b, and the thicknesses thereof are different. Therefore, one thickness detection roller 24A is disposed in a region through which the body portion 6a of the stand pouch bag passes, and the other thickness detection roller 24B is disposed in a region through which the bottom material portion 6b of the stand pouch bag passes. Thus, it becomes possible to measure the thicknesses of the body part 6a and the bottom part 6b having different thicknesses. The thickness detection rollers 24 </ b> A and 24 </ b> B can each be adjusted in attachment position in the width direction (axial direction of the drive roller 23), and can be attached at an appropriate position according to the size of the bag making product 6.

  The foreign matter detection means 16 further measures the thickness of the bag-making product passing between the drive roller and the thickness detection roller from the signal from the thickness detection roller height measurement means (not shown). A control monitor 27 having an identification means for comparing whether the value is compared with a preset reference value and identifying whether or not foreign matter is attached is provided. Here, as the above-described reference value, an allowable value determined in consideration of thickness unevenness or the like is added to the thickness (specification value) of the bag-made product 6 in a state where no foreign matter is attached. Thereby, by comparing a measured value with a reference value, it is possible to identify whether or not foreign matter is attached to the bag-made product. When the stand pouch bag 6A is used as the bag-made product 6, the reference value set for the thickness detection roller 24A is determined according to the thickness of the trunk portion 6a of the stand pouch bag, The reference value set for the thickness detection roller 24B is determined in accordance with the thickness of the bottom material portion 6b of the stand pouch bag.

  As can be seen from FIG. 1, when the thickness detection rollers 24A and 24B are arranged in a straight line, a small gap is provided between the thickness detection rollers 24A and 24B in order to secure a space for arranging the lifting shafts 25A and 25B. It will occur. If the cutting residue adhering to the bag-making product 6 is parallel to the transport direction at a position corresponding to the gap between the thickness detection rollers 24A and 24B as indicated by a two-dot chain line 9a, It may pass through and cannot be detected by the thickness detection rollers 24A and 24B. Therefore, in order to ensure such a detection error, a security driving roller is provided in a region that can cover the gap between the two thickness detection rollers 24A and 24B downstream of the drive roller 23 and the thickness detection rollers 24A and 24B. A security foreign matter detection means 30 including a security thickness detection roller 32 and a security thickness detection roller 31 is provided. Similarly to the thickness detection rollers 24A and 24B arranged upstream, the security thickness detection roller 32 is also held by a lift shaft 33 that can be moved up and down, and by measuring the height position of the lift shaft 33, A security thickness detecting roller height measuring means (not shown) for measuring the position of the security thickness detecting roller 32 in the height direction is also provided.

  The lengths of the security driving roller 31 and the security thickness detection roller 32 may be long enough to cover the gap between the thickness detection rollers 24A and 24B. Similarly to 23, it is preferable to support the entire width of the bag-made product 6 so that the bag-made product can be conveyed because the conveyance of the bag-made product is stable. On the other hand, the security thickness detection roller 32 is provided so as to be in contact with only a partial region of the bag-made product. The security thickness detection roller 32 can be adjusted in the position in the width direction, and can be positioned at an appropriate position according to the size of the bag making product 6 to be used. The mounting position of the security thickness detection roller 32 is a position that can cover the gap between the thickness detection rollers 24A and 24B. However, when the stand pouch bag 6A is used as the bag product 6, the body portion 6a and Since a measurement error occurs at a position where both the bottom material portions 6b are in contact with each other, the position is set so as to be in contact with only one of them. In the illustrated embodiment, the upstream thickness detection roller 24B is positioned so as to be in contact with the entire area of the bottom material portion 6b, and the thickness detection roller 24A is slightly apart from the bottom material portion 6b from one end of the body portion 6a. The downstream security thickness detection roller 32 covers the gap between the thickness detection rollers 24A and 24B and is in contact with only the body portion 6a.

  The control monitor 27 measures the thickness of the bag-making product passing between the security driving roller 31 and the security thickness detection roller 32 from a signal from the security thickness detection roller height measuring means (not shown). In addition, an identification unit that compares the obtained measurement value with a reference value set in advance to identify whether or not foreign matter is attached is also provided.

  In addition to or in combination with the foreign matter detection means 30 for security, the bag-made product 6 is provided upstream of the drive roller 23 and the thickness detection rollers 24A and 24B, as indicated by a two-dot chain line 9a in FIG. It is also possible to provide a neutralizing blower 35 that blows air so as to change the direction of the elongated cut residue when the elongated cut residue 9 is attached in parallel to the conveying direction. By providing the static eliminating blower 35, it is possible to prevent the elongated foreign matter from going straight and passing through the gap between the thickness detection rollers 24A and 24B, and the foreign matter can be reliably detected. In addition, when the cutting waste adheres to the lower side of the bag-made product 6, the neutralizing blower 35 does not exhibit the effect, and when the cutting waste is short, the gap between the thickness detection rollers 24A and 24B. Therefore, it is preferable to provide the foreign object detection means 30 together with the static eliminating blower 35 because the foreign object detection is reliable.

  As described above, the control monitor 27 discriminates whether or not foreign matter is attached from the values obtained by measuring the thickness of the bag-making product 6 that has passed under the thickness detection rollers 24A and 24B and the security thickness detection roller 32. Although it has an identification means, in addition, from the viewpoint of fail-safety, the twice-cut residue having a thickness equivalent to that of a bag-made product has passed under the thickness detection rollers 24A and 24B and the security thickness detection roller 32 alone. Sometimes it also has the ability to determine that it is a foreign object. That is, the size in the transport direction of the bag-made product 6 is also input to the control monitor 27 in advance, and the control monitor 27 passes through the thickness detection position of the bag-made product 6 calculated from the size (the feed speed is set). Dependency) and the time when the thickness is actually measured are compared, and if the difference is large, a function for discriminating that the cut waste has passed is provided. By providing this function, it is possible to prevent the cutting waste from passing under the thickness detection rollers 24A and 24B and the security thickness detection roller 32 and mixing on the bag-making products accumulated downstream. .

  A rejection device 36 having an opening / closing plate 37 and a driving device (not shown) for opening / closing the opening / closing plate 37 is provided downstream of the thickness detection position, and a defective product reservoir for discharging the foreign-material-bound bag-making product below the opening / closing plate 37. 38 is formed, and a conveyor 39 for product conveyance is provided downstream of the opening / closing plate 37. When the control monitor 27 detects that foreign matter has adhered to the bag-made product 6, the opening / closing plate 37 of the reject device 36 is flipped up so that the foreign-material-attached bag-made product is discharged to the defective product reservoir 38. However, in other cases, the opening / closing plate 37 is also provided with a function of controlling the reject device 36 so as to hold the bag-making product 6 at a position where the bag-made product 6 is sent to the conveyor 39.

  In the foreign matter detection device 11 having the above-described configuration, the bag-made product 6 cut by the cutting blade 14 of the bag-making machine 12 is supplied onto the conveyance belt 18 and conveyed in a form in which the bag width direction is aligned along the guide plate 21. Then, it is supplied between the drive roller 23 of the foreign matter detection means 16 and the thickness detection rollers 24A and 24B. Next, the bag-made product 6 is conveyed between the driving roller 23 and the thickness detection rollers 24A and 24B. At this time, the thickness detection rollers 24A and 24B rise according to the thickness, and the position of the thickness detection rollers 24A and 24B is measured. By measuring with the means, the thickness of the bag-made product 6 is measured, and the identification means of the control monitor 27 compares the measured value with the reference value, so that foreign matter such as the cut residue 9 adheres to the bag-made product 6. Identify whether or not Even if the cut residue 9 passes through the gap between the thickness detection rollers 24A and 24B, foreign matter such as the cut residue 9 is attached to the bag-made product 6 by the security foreign matter detection means 30 disposed downstream thereof. Identify whether or not. Then, the bag-made product 6 to which no foreign matter is attached is accumulated on the conveyor 39 through the opening / closing plate 37 at the position indicated by the solid line in FIG. 2 and discharged downstream by the conveyor 39. On the other hand, if it is identified that foreign matter is attached to the bag-made product 6, the control monitor 27 controls the reject device 36 to raise the open / close plate 37, so that the foreign-material-attached bag-made product is stored in the defective product reservoir 38. Let it drain. In addition, even when the cutting residue 9 passes under the thickness detection rollers 24A and 24B and the security thickness detection roller 32 alone, the control monitor 27 identifies it and causes the opening / closing plate 37 to be lifted up to make a bag with foreign matter attached. The product is discharged into the defective product reservoir 38. As described above, bag-made products with foreign matter attached or single foreign matters are discharged to the defective product reservoir 38, and only the bag-made product 6 with no foreign matter attached is sent out onto the conveyor 39 for subsequent processing. Sent. Thus, a bundle of bag-making products free from foreign matter can be obtained, and troubles in the subsequent process can be avoided.

  In the above-described embodiment, the case where the cut residue generated by the cutting in the bag making machine is detected has been described as an example. However, the foreign object detection device 11 is not limited to the cut residue, and other foreign matters such as a connection piece. Any foreign matter having a certain thickness such as a tape or a dusting lump can be detected, and the bag-made product to which the foreign matter itself or the foreign matter adheres can be separated and removed.

  The foreign matter detection device 11 described above can be applied to bag-making products of various thicknesses by inputting a reference value according to the thickness of the bag-making product 6 to be inspected, and is also applicable to multilayered bag-making products. Is possible. Moreover, it is applicable also to the stand pouch bag provided with two area | regions from which thickness differs. Further, by keeping the machine speed of the foreign matter detection device 11 faster than the bag making machine 12 without finely synchronizing with the bag making machine 12, all the bag making products discharged from the bag making machine 12 can be obtained. It can be inspected and can be arranged downstream of the bag making machine 12 without any trouble. Of course, it is also desirable to synchronize and take linked feed speeds. Furthermore, by providing the foreign object detection devices 11 arranged in parallel, it is possible to deal with a plurality of rows of bag making machines.

  Further, by providing an application for counting the number of bag-made products on the control monitor 27, the number of bag-made products can be managed.

  In the above-described embodiment, the two thickness detection rollers 24A and 24B are arranged in a straight line, and in order to prevent foreign matter from passing through the gap between them and causing a detection leak, Although the security drive roller 31 and the security thickness detection roller 32 are provided downstream, the present invention is not limited to this configuration, and as shown in FIGS. 6 and 7, the thickness detection of the body portion of the stand pouch bag is performed. The thickness detection roller 24A for detecting the thickness of the bottom and the thickness detection roller 24B for detecting the thickness of the bottom material portion are arranged at different positions in the carrying direction of the bag making product, and the driving rollers 23 and 31 are also arranged corresponding to the thickness. It is good also as a structure arrange | positioned so that the edge part of detection roller 24A, 24B may mutually contact | connect in the width direction of a bag making product. Here, the positions of the end portions of the thickness detection rollers 24A and 24B that are in contact with each other in the width direction are set as boundary positions between the body portion 6a and the bottom portion 6b of the stand pouch bag 6A to be processed. By adopting this configuration, it is possible to detect any position of the bag making product by any of the thickness detection rollers 24A and 24B, and the security driving roller 31 and the security thickness detection roller 32 can be omitted.

  Furthermore, in the above embodiment, in order to be able to deal with a stand pouch bag having regions with different thicknesses, the two thickness detection rollers 24A and 24B arranged in regions with different width directions are used. If it is only necessary to be able to handle only a certain bag-making product, it is not necessary to use the two thickness detection rollers 24A and 24B, and only one thickness detection roller having the same length as the drive roller 23 may be used. In that case, the security drive roller 31 and the security thickness detection roller 32 are also unnecessary.

  Furthermore, in the above-described embodiment, the case where the bag-made product foreign matter detection / removal device is directly connected to the bag making machine has been described. However, the bag-made product foreign matter detection / removal device of the present invention is not limited to this case, and the feeder unit By providing a mechanism for setting the accumulated bag-making products and feeding them one by one, it can be provided as an off-line machine that does not synchronize with the bag-making machine.

  The preferred embodiments of the present invention have been described above, but it goes without saying that the present invention is not limited to these embodiments and can be appropriately changed within the scope of the claims.

Schematic plan view of a bag-made product foreign matter detection and removal apparatus according to an embodiment of the present invention Schematic side view of the bag-made product foreign matter detection and removal apparatus shown in FIG. CC schematic cross-sectional view of FIG. (A) is a schematic plan view of a stand pouch bag, (b) is a schematic cross-sectional view thereof. Schematic plan view explaining the bag making procedure Schematic plan view of a bag-formed product foreign matter detection and removal apparatus according to another embodiment of the present invention Schematic side view of the bag-made product foreign matter detection and removal apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plastic film 6 Bag making product 6A Stand pouch bag 9 Cutting residue 11 Foreign material detection apparatus 12 Bag making machine 13 Cutting part 14 Cutting blade 15 Conveying means 16 Foreign object detecting means 18 Conveying belt 19 Roller 20 Drive motor 21 Guide plate 23 Driving roller 24A , 24B Thickness detection rollers 25A, 25B Lifting shaft 26 Drive motor 27 Control monitor 30 Security foreign matter detection means 31 Security drive roller 32 Security thickness detection roller 33 Lifting shaft 35 Static elimination blower 36 Rejecting device 37 Opening and closing plate 38 Defective product reservoir 39 Conveyor

Claims (7)

  Whether the bag-making product is conveyed so as to pass through the thickness detection position, the thickness of the bag-made product being conveyed is measured, and the measured value is compared with a preset reference value to determine whether foreign matter is attached. A foreign matter detection method for bag-formed product having a foreign matter detection step for identifying whether or not   A conveying means for sending the bag-made product to the thickness detection position, and a standard value in which the measured value obtained by measuring the thickness of the bag-made product while conveying the bag-made product fed by the conveying means is set in advance. A foreign matter detection means for discriminating whether or not the foreign matter is attached, and the foreign matter detection means is disposed between the drive roller provided at a fixed position and the drive roller above the drive roller. A thickness detection roller arranged so as to be able to be moved up and down so as to convey the bag product, a thickness detection roller height measuring means for measuring the height direction position of the thickness detection roller, and the thickness detection roller height The thickness of the bag-making product passing between the drive roller and the thickness detection roller is measured from the signal from the measuring means, and the obtained measurement value is compared with a preset reference value to identify whether or not foreign matter is attached. A bag-making product comprising an identification means for Chakuibutsu sensing device.   The drive roller has a length equal to or greater than the full width of the bag making product so that the full width of the bag making product can be supported and conveyed, and the thickness detection roller is shorter than the drive roller. 3. The bag-formed product foreign matter detection device according to claim 2, wherein two are provided so as to be in contact with different regions in the width direction of the drive roller.   And a security driving roller and a security thickness detection roller disposed downstream of the drive roller and the two thickness detection rollers and in a region that can cover a gap between the two thickness detection rollers. Measures the thickness of the bag-making product while conveying the bag product, and compares the measured value obtained by the measurement with a preset reference value to provide a foreign matter detection means for security. The bag-attached product foreign matter detection device according to claim 3.   The neutralizing blower for blowing air so as to change the direction of the elongated foreign matter adhering to the bag-made product in parallel with the conveying direction is provided upstream of the driving roller and the thickness detecting roller. The bag-formed product foreign matter detection device according to any one of 2 to 4.   The drive roller and the thickness detection roller are respectively provided at two places where the bag-making product is conveyed in different directions, and the thickness detection rollers provided at the two positions do not overlap each other in the width direction. The bag-formed product foreign matter detection device according to claim 2, wherein the end portions of the bag are arranged so as to contact each other.   The bag-made product foreign matter detection device according to any one of claims 2 to 6, and a foreign matter-attached bag product based on a signal from the bag-made product foreign matter detection device disposed downstream thereof, A bag-made product foreign matter detection / removal device having a reject device that separates a bag-made product without adhesion.

Images