JP6649739B2 - Bag inspection device - Google Patents

Description

  The present invention relates to a bag inspection apparatus that inspects a packaging bag of a product in which contents are packaged.

  In general, in a product packed with contents such as snacks, if there is a defect in the packaging bag (for example, defective sealing), there is a possibility that the content may be quickly deteriorated or foreign substances may be mixed. For this reason, in such products, a seal check for inspecting the quality of the packaging bag is performed, and defective products are excluded. Patent Document 1 discloses that a conveying means of a product, a holding member for holding and pressing the product, and a space between the holding member and the conveying means at the time of loading of the product are narrower than the height of the product. There is disclosed a bag inspection device (seal check device) provided with a servomotor for detecting an upward displacement amount of the holding member later.

JP 2003-156403 A

  However, in the above-described conventional bag inspection apparatus, when inspecting a product in which the packaging bag is not filled with a sufficient amount of air, the contents in the packaging bag are not removed before the holding member pushes out the air in the packaging bag. , And the quality of the packaging bag cannot be inspected.

  The present invention provides a bag inspection apparatus capable of inspecting the quality of a product packaging bag in which contents are packed, even when the amount of air filled in the product packaging bag is small. Aim.

  The inspection device of the present invention is a bag inspection device that inspects a packaging bag of a product in which contents are packaged, and a first member that presses the product conveyed by the conveyance unit and a first member that is pressed by the first member. A second member that presses the product from a direction different from the product pressing direction of the first member, and a reaction force that the first member and / or the second member receives from the product when the second member presses the product A determination unit for determining the quality of the packaging bag based on the first member, when the first member presses the product, the air in the packaging bag moves between the second member and the contents in the packaging bag Let it.

  In the bag inspection device having this configuration, when the product is pressed by the first member, the air dispersed in the packaging bag is collected between the second member and the contents in the packaging bag. The second member presses the product in a state where air in the packaging bag is collected between the second member and the contents in the packaging bag. Thereby, when the second member presses the product, the possibility of pressing the contents in the packaging bag is reduced. As a result, even if the amount of air filled in the packaging bag of the product is small, the quality of the packaging bag of the product in which the contents are packaged can be inspected.

  In the bag inspection device of the present invention, when the second member presses the product pressed by the first member, the determination unit determines the quality of the packaging bag based on a reaction force received by the second member from the product. Is also good.

  With the bag inspection apparatus having this configuration, it is possible to determine the quality of the packaging bag of the product with a simple configuration.

  The bag inspection apparatus of the present invention further includes a servomotor that acquires a displacement amount of the first member and / or the second member in a direction opposite to the product pressing direction when the product is pressed by the second member. May obtain the reaction force based on the amount of displacement.

  In the bag inspection apparatus having this configuration, the amount of displacement of the first member and / or the second member in the direction opposite to the product pressing direction when the second member presses the product, that is, the first member and / or the second member The reaction force received by the member can be obtained with a simple configuration.

  In the bag inspection device having this configuration, the first member may press the product from a direction different from the direction in which the product is transported.

  In the bag inspection device of the present invention, the first member extends in the product transport direction and is arranged to face each other, and regulates the movement of the product transported by the transport unit in the product pressing direction of the first member. It may be a pair of guide members, and the pair of guide members may be arranged so as to have an interval smaller than the size of the packaging bag in the product pressing direction of the first member of the product conveyed by the conveyance unit.

  In the bag inspection apparatus having this configuration, the product guided between the pair of guide members by the transport unit is pressed in a direction different from the transport direction. Thus, with a simple configuration, air dispersed in the packaging bag can be collected between the second member and the contents in the packaging bag.

  In the bag inspection device of the present invention, the pair of guide members may be provided such that the distance is adjustable.

  In the bag inspection device having this configuration, the interval can be adjusted according to the size of the contents, so that the product is more reliably pressed, and the air dispersed in the packaging bag is separated from the second member and the contents in the packaging bag. Can be collected during.

  In the bag inspection device of the present invention, the pair of guide members may have a tapered portion in which the interval gradually decreases from the upstream side to the downstream side in the transport direction.

  In the bag inspection apparatus having this configuration, the product conveyed from the upstream side in the conveyance direction can be reliably guided between the pair of guide members.

  In the bag inspection apparatus of the present invention, the delivery surface for delivering the product in the transport direction may be disposed on the pressing surface of the pair of guide members that presses the product.

  In the bag inspection device having this configuration, the product guided between the pair of guide members can be reliably transported in the transport direction.

  In the bag inspection device of the present invention, the first member may hold the product at the timing when the product is transported to the predetermined position.

  In the bag inspection device having this configuration, the product can be held at an appropriate position to be pressed by the second member.

  In the inspection device of the present invention, the pressing surface of the first member and / or the second member that presses the product may have unevenness.

  In the bag inspecting apparatus having this configuration, even when a product having minute holes and / or tears in the packaging bag is pressed by the first member and / or the second member, the first member and / or the second member may be pressed. Air leaks from the packaging bag through the unevenness of the member. In other words, since the first member and / or the second member have an escape route for air from the packaging bag, air leakage from the packaging bag can be reliably detected.

  In the inspection device of the present invention, the first member and / or the second member may be provided such that the positional relationship between the first member and the second member in the product conveyance direction can be adjusted.

  In the bag inspection device having this configuration, it is possible to reliably guide the product to the position where the product is pressed by the second member.

  In the bag inspection device of the present invention, the first member may be provided such that the position of the second member on the second member side in the product pressing direction is adjustable.

  In the bag inspection device having this configuration, the air in the packaging bag can be more reliably moved between the second member and the contents in the packaging bag when the second member presses the product, and It is possible to avoid that the quality of the packaging bag cannot be determined due to contact with the member.

  ADVANTAGE OF THE INVENTION According to this invention, even if the amount of air filled in the packaging bag of goods is small, the quality of the packaging bag of the goods which the content was packaged can be inspected.

It is a side view of the seal check device concerning one embodiment. It is a top view of a lower conveyance conveyor and a pair of guide members. FIG. 3 is a sectional view taken along line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. It is a top view of a pair of guide members. It is a top view of an upper conveyance conveyor and a pair of guide members. It is a functional block diagram of the seal check device of FIG. FIG. 2 is a side view of the seal check device shown in FIG. 1 when an upper conveyor holds products. It is a top view of goods. (A) is the figure which looked at the goods from the front, and (B) is the figure which showed the state when the goods were pressed with a pair of guide members. FIG. 11 is a plan view of a pair of guide members included in a seal check device according to another modification.

  Hereinafter, an embodiment will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. The dimensional ratios in the drawings do not always match those described. Further, in the description, words indicating directions such as “up”, “down”, “left”, “right” are expedient words based on the states shown in the drawings.

(1) Overall Configuration The seal check device 1 is a bag inspection device that inspects a packaging bag B of a product P in which contents C are packaged. As shown in FIG. 1 and FIG. 2, the seal check device 1 is disposed between a carry-in conveyor 2 on the upstream side and a carry-out conveyor 3 on the downstream side. The product P is transported in the direction of arrow a with the vertical seal portion B1 parallel to the transport direction X and the horizontal seal portion B2 directed upstream and downstream in the transport direction X. In the following description, “left and right” means “left and right” when viewing the downstream side from the upstream side.

  The seal check device 1 includes a lower transport conveyor (transport unit) 11, an upper transport conveyor (second member) 12, a pair of guide members (first members) 70, 70, a control unit (determination unit) 60, It has.

  As shown in FIGS. 1 to 3, the lower conveyor 11 is detachably mounted above the main body frame 1a via a plurality of first support members 1b,..., 1b. The lower conveyor 11 supports and conveys the product P from below. The lower conveyor 11 can accommodate a frame 21, a pair of rollers 22, 23 rotatably supported at both upper and downstream ends of the frame 21, and a vertical seal portion B 1 of the product P between the rollers 22, 23. And a pair of transport belts 24, 24 that are separated and wound on the left and right with a gap G therebetween.

  Each transport belt 24 is provided with a plurality of protrusion members 24a,..., 24a extending perpendicular to the transport direction X at predetermined intervals in the transport direction X over the entire width. On the upper surface of the frame 21, a top plate 25 that supports the pair of transport belts 24, 24 is arranged. On the upper surface of the top plate 25, a concave groove 25a extending in the transport direction X is provided so as to correspond to the gap G between the two transport belts 24,24.

  As shown in FIGS. 1, 2, and 4, a motor 26 is mounted on the right side of the main body frame 1a. A pulley 26b mounted on the output shaft 26a of the motor 26, a pulley 22a mounted coaxially on the downstream roller 22, and pulleys 27a, 27b mounted on both ends of a support shaft 27 penetrating the main body frame 1a left and right. Among them, a timing belt 29 is wound around a right pulley 27a and a pulley 28 installed at a predetermined position on the right side of the main body frame 1a as shown in the figure.

  Thus, when the pulley 26b on the motor 26 rotates in the direction of arrow b, the pulley 27a on the support shaft 27 rotates in the direction of arrow c, and the pulley 22a, that is, the downstream roller 22, rotates in the direction of arrow d. The transport belts 24, 24 wound around the pair of rollers 22, 23 travel in the direction of arrow a. The pulley 28 is provided for appropriately adjusting the tension of the timing belt 29, and is movable in the transport direction X.

  As shown in FIGS. 1, 3, and 6, the upper transport conveyor 12 sandwiches and presses the product P between the upper transport conveyor 12 and the lower transport conveyor 11. That is, the product P pressed by the upper conveyor 12 is moved in a direction different from a product pressing direction of a pair of guide members 70, 70 described below (hereinafter, referred to as a “left-right direction Y”) (hereinafter, “vertical direction Z”). ) Is pressed. The upper conveying conveyor 12 is wound around a frame 31, three rollers 32, 33, 34 rotatably supported at upper and lower ends of the frame 31 and near the upstream end, and rollers 32 to 34. And a conveyor belt 35.

  On the lower surface of the frame 31, a top plate 36 that supports the transport belt 35 between the rollers 32 and 34 is disposed. The upstream roller 33 is provided at a position higher than the roller 34, and the transport belt 35 is inclined upward toward the upstream side over a predetermined range. That is, the goods P to be carried in are smoothly introduced between the lower conveyor 11 and the upper conveyor 12.

  As shown in FIGS. 1 and 2, a servomotor 41 is installed on the left side of the main body frame 1a on the upstream side. The upper conveyor 12 and the upstream side of the main frame 1a are detachably connected via a lever member 42, an intermediate link member 43, and a pair of first link members 46, 46. One end of the lever member 42 is attached to the output shaft 41a of the servomotor 41. The intermediate link member 43 is a linear member, and one end of the intermediate link member 43 is connected to the other end of the lever member 42. The pair of first link members 46 are “U-shaped” members arranged to face each other in the left-right direction Y, and are arranged in the direction of arrow e around a support shaft 45 that passes through the main body frame 1 a in the left-right direction Y Is provided so as to be swingable. One end of the pair of first link members 46, 46 is connected to the other end of the intermediate link member 43. The other ends of the pair of first link members 46, 46 are connected to the upstream side of the frame 31 by bolts 44, 44.

  Stoppers 47, 47 are provided upright on both sides in the left-right direction Y of the main body frame 1a. The stoppers 47, 47 are brought into contact with each other when the longer swing end of the first link member 46 swinging about the support shaft 45 swings in the direction opposite to the arrow e, so that the upper transport member 47 is moved upward. The bottom dead center of the conveyor 12 is set. As shown in FIG. 3, the interval t0 between the lower conveyor 11 and the upper conveyor 12 when the upper conveyor 12 reaches the bottom dead center is set to an initial value. The interval t0 is smaller than the thickness of the product P carried into the seal check device 1.

  The upper conveyor 12 and the downstream side of the main frame 1a are detachably connected via a pair of second link members 49,49. The pair of second link members 49, 49 are linear members arranged to face each other in the left-right direction. One ends of the pair of second link members 49, 49 are respectively connected to both ends of the support shaft 27 in the left-right direction Y, and are provided so as to be swingable about the support shaft 27 in the direction of arrow e. . The other ends of the pair of second link members 49, 49 are fixed to the main body frame 1a by bolts 48, 48.

  As described above, the lower body frame 1a, the upper frame 31, the first link members 46, 46, and the second link members 49, 49 constitute the four-bar parallel link mechanism L. The upper transport conveyor 12 can move in the direction of arrow f while always maintaining a parallel relationship with the lower transport conveyor 11 via the parallel link mechanism L.

  The upper transport conveyor 12 is pushed up in the direction of arrow f when the product P enters. As a result, the first link members 46, 46 and the second link members 49, 49 all swing in the direction of arrow e. At this time, the output shaft 41a of the servomotor 41 rotates in the direction of arrow g. That is, such an operation of the parallel link mechanism L can be detected through rotation of the output shaft 41a of the servomotor 41. That is, the servomotor 41 acquires the amount of displacement of the upper transport conveyor 12 in the vertical direction Z when the upper transport conveyor 12 presses the product P pressed by the pair of guide members 70, 70.

  As shown in FIGS. 1 and 2, a pulley 27 b assembled on the left side of the support shaft 27, a pulley 49 b erected on the extension 49 a of the second link member 49 on the left side, and a pulley 27 b on the left side of the frame 31. In the vicinity of the downstream end, a timing belt 51 is wound around a pulley 50 attached to a support shaft passing through the second link member 49. As shown in FIGS. 1, 2 and 6, the pulley 52 mounted coaxially with the pulley 50 and the pulley 32 a mounted coaxially with the downstream roller 32 of the upper conveyor 12 have timing. A belt 53 is wound. Note that the pulley 49b is for appropriately adjusting the tension of the timing belt 51, and the installation position is movable.

  As shown in FIGS. 1 and 4, when the pulley 26b on the motor 26 rotates in the direction of the arrow b, the pulleys 27a and 27b on the support shaft 27 and the pulleys 50 and 52 on the frame 31 rotate in the direction of the arrow c. I do. As a result, as shown in FIG. 1, the pulley 32a, that is, the downstream roller 32 rotates in the direction of arrow c, and the transport belt wound around the rollers 32, 33, and 34 of the upper transport conveyor 12. 35 travels in the direction of the arrow a similarly to the two conveyor belts 24 of the lower conveyor 11.

  As shown in FIGS. 1 to 3, the pair of guide members 70, 70 extend in the transport direction X and are arranged to face each other, and in the left-right direction Y of the product P transported by the lower transport conveyor 11. Restrict movement. The pair of guide members 70, 70 are smaller than the size W12 of the packaging bag B in the left-right direction Y of the product P transported by the lower transport conveyor 11, and are the same as the size W11 of the content C or the size W11 of the content C. It is arranged so as to have a larger interval W1.

  As shown in FIG. 5, the pair of guide members 70 has a main body 71, a tapered portion 72, and a fixed portion 75. The pair of guide members 70 has a small frictional force with the product P so as not to be damaged when the product P is pinched. For example, it is formed from propylene or the like. The main body portion 71 is a portion that sandwiches and presses the product P conveyed by the lower conveyor 11. The tapered portion 72 is a portion where the distance W2 to W1 gradually decreases from the upstream side to the downstream side in the transport direction X when the pair of guide members 70, 70 are fixed to the frame 21. The pair of guide members 70 are mounted such that the tapered portion 72 is disposed on the upstream side in the transport direction X. The fixed portion 75 is a portion fixed to the frame 21, and has elongated holes 75a, 75a extending in the left-right direction Y (direction in which the pair of guide members 70, 70 oppose each other).

  The pair of guide members 70, 70 are attached to the frame 21 by screwing a bolt inserted into a long hole 75 a formed in the fixed portion 75 into the frame 21. By adjusting the position of the bolt or the like with respect to the elongated hole 75a, the distance W1 between the pair of guide members 70, 70 in the left-right direction Y is adjusted.

  As shown in FIG. 6, the pair of guide members 70, 70 are arranged such that their upstream ends protrude further upstream in the transport direction than the upstream ends of the upper transport conveyor 12. The amount of protrusion is the distance L1. The product P is difficult to be transported in the transport direction X because the interval (W2 to W1) is gradually narrowed by the tapered portion 72. In the present embodiment, the pair of guide members 70, 70 are arranged such that the upstream end of the upper transport conveyor 12 is located in the middle of the tapered portion 72. Accordingly, the product P is reliably transported in the transport direction X by being sandwiched between the lower transport conveyor 11 and the upper transport conveyor 12.

  The pair of guide members 70, 70 are provided so that their positions with respect to the lower transport conveyor 11 in the transport direction X can be adjusted. Specifically, as shown in FIG. 2, a plurality of bolt insertion holes 21 b for attaching the pair of guide members 70, 70 are formed in the frame 21 along the transport direction X. Thereby, the mounting position of the pair of guide members 70, 70 with respect to the frame 21 can be selected.

  The pair of guide members 70, 70 are provided so that the position on the upper conveyor 12 side in the vertical direction Z is adjustable. Specifically, it is fixed to the frame 21 via the second support member 21a. In the present embodiment, a plurality of second support members 21a having different thicknesses are prepared, and the position in the vertical direction Z on the upper transport conveyor 12 can be adjusted by selectively attaching the second support members 21a. It has become. The pressing surface 71 a of the pair of guide members 70, 70 that presses the product P is formed with irregularities by embossing.

  As shown in FIG. 7, the control unit 60 outputs a control signal to the motor 26 that drives the upper conveyor 12 and the lower conveyor 11. The control unit 60 outputs a control signal to the servomotor 41 for pressing the product P with a predetermined force when the product P is pressed by the upper transport conveyor 12 and the lower transport conveyor 11. The control unit 60 receives the detection signal of the interval between the lower conveyor 11 and the upper conveyor 12 output from the servomotor 41. The control unit 60 determines the quality of the packaging bag B based on the detection signal.

(2) Operation of Seal Check Device Next, the operation of the seal check device 1 will be described. As shown in FIG. 9, a product P in which contents C to be inspected in the present embodiment are packaged in a packaging bag B has a vertical seal portion B1 attached to the palm and a pair of horizontal seal portions B2 and B2. Is provided. The size of the packaging bag B in the left-right direction Y is W2, and the size of the contents C is W1.

  As shown in FIG. 2, when the product P is carried into the seal check device 1 from the carry-in conveyor 2 as shown in FIG. 2, the lower carry conveyor is guided by the tapered portions 72 of the pair of guide members 70, 70. 11 transports in the transport direction X. From the middle of the tapered portion 72 in the transport direction X, the product P is transported by being sandwiched between the lower transport conveyor 11 and the upper transport conveyor 12. Further, the product P is sandwiched between the pair of guide members 70, 70 in the left-right direction Y.

  As shown in FIG. 10A, the commodity P is in a state where the air A is dispersed around the contents C in the normal state. Since the pair of guide members 70, 70 are arranged such that the interval W1 between them is substantially equal to the size W11 of the content C in the left-right direction Y, the tapered portion 72 of the pair of guide members 70, 70 enters. Then, the product P guided to the center in the transport direction X of the pair of guide members 70, 70 is sandwiched from both the left and right directions Y of the product P as shown in FIG. Thereby, the air A inside the packaging bag B moves between the upper conveyor 12 and the contents C.

  Next, the upper transport conveyor 12 presses the product P in a state where the air A has moved between the upper transport conveyor 12 and the contents C downward. Since the interval t0 (see FIG. 3) between the lower conveyor 11 and the upper conveyor 12 in the initial state is smaller than the thickness h of the product P as shown in FIG. Accordingly, the upper conveyor 12 is lifted in the direction of arrow f.

  In that case, as shown in FIG. 8, the main frame 1a, the frame 31, the first link members 46, 46 and the second link are provided between the lower transport conveyor 11 and the upper transport conveyor 12 supported by the main frame 1a. Since the four-bar parallel link mechanism L composed of the members 49 and 49 is configured, the upper transport conveyor 12 maintains the parallel state with respect to the lower transport conveyor 11 due to the goods P passed from the carry-in conveyor 2 and entered. While being lifted in the direction of arrow f. The longer swing end of the first link member 46 is separated from the stopper 47.

  As shown in FIGS. 1, 4 and 8, the power of the motor 26 attached to the lower main body frame 1 a is supplied via the timing belts 29, 51, 53 to the downstream side rollers 22 of the lower conveyor 11. And the downstream rollers 32 of the upper conveyor 12. Therefore, the product P sandwiched between the upper and lower transport belts 24, 24, 35 and the top plates 25, 36 is transported stably in the direction of the arrow a.

  The product P is sandwiched between the transport belts 24, 24 and the top plate 25 of the lower transport conveyor 11 and the transport belt 35 and the top plate 36 of the upper transport conveyor 12, and at a predetermined force via the servomotor 41. Pressed. The interval t (see FIG. 8) between the lower conveyor 11 and the upper conveyor 12 at the time of pressing is detected by the servomotor 41 via the swing of the first link member 46, the intermediate link member 43, and the lever member 42. You. The control unit 60 determines the quality of the packaging bag B based on the detection signal detected by the servomotor 41. That is, if the interval t suddenly decreases at the time of pressing, the packaging bag B is determined to be defective.

  The product P released from the pressed state by the upper conveyor 12 and the lower conveyor 11 is delivered to the unloading conveyor 3 and further conveyed to a downstream process.

(3) Features, Functions and Effects In the seal check device 1 of the above-described embodiment, when the product P is pressed by the upper transport conveyor 12 from a direction different from the transport direction X, the air A dispersed in the packaging bag B is reduced. It is collected between the upper conveyor 12 and the contents C in the packaging bag B. The upper conveyor 12 presses the product P in a state where the air A in the packaging bag B is collected between the upper conveyor 12 and the contents C in the packaging bag B. Thereby, when the upper conveyor 12 presses the goods P, the possibility of pressing the contents C in the packaging bag B is reduced. As a result, even if the amount of air A filled in the packaging bag B of the product P is small, the quality of the packaging bag B of the product P in which the content C is packaged can be inspected.

  In the above embodiment, the servomotor 41 obtains the amount of displacement (the amount of displacement in the direction opposite to the product pressing direction) in the vertical direction Z of the upper transport conveyor 12 when the product P is pressed by the upper transport conveyor 12. . Thereby, the displacement amount when the upper transport conveyor 12 presses the product P, that is, the reaction force received by the upper transport conveyor 12 from the product P can be acquired with a simple configuration.

  In the above embodiment, the product P is pressed by the pair of guide members 70, 70 extending in the transport direction X and arranged to face each other. Thus, the air A dispersed in the packaging bag B can be collected between the upper conveyor 12 and the contents C in the packaging bag B with a simple configuration.

  In the above embodiment, since the pair of guide members 70, 70 are provided so that the distance W1 between them is adjustable, the pair of guide members 70, 70 presses the product P more reliably, and distributes the air A dispersed in the packaging bag B to the upper transport conveyor. 12 and the contents C in the packaging bag B.

  In the above embodiment, since the pair of guide members 70 has the tapered portion 72 whose interval gradually decreases from the upstream side to the downstream side in the transport direction X, the guide members 70 are transported from the upstream side in the transport direction. The coming product P can be reliably guided between the pair of guide members 70, 70.

  In the above embodiment, since the pressing surface 71a for pressing the product P in the pair of guide members 70, 70 is formed with irregularities, the packaging bag B is pressed against the product P having minute holes and / or tears. Even in this case, the air A leaks from the packaging bag B via the irregularities. In other words, since the escape path of the air A from the packaging bag B is ensured between the pair of guide members 70, 70, the air leakage from the packaging bag B can be reliably detected.

  In the above embodiment, since the pair of guide members 70, 70 are provided so that their positions with respect to the lower transport conveyor 11 in the transport direction X can be adjusted, the upper transport conveyor 12 reliably guides the product P to a position where the product P is pressed. It becomes possible to do.

  In the above embodiment, the pair of guide members 70, 70 are provided so that the position on the upper transport conveyor 12 side in the vertical direction Z of the upper transport conveyor 12 can be adjusted. Thereby, the air A in the packaging bag B can be more reliably moved between the upper transportation conveyor 12 and the contents C in the packaging bag B when the upper transportation conveyor 12 presses the product P, and It can be avoided that the quality of the packaging bag B cannot be determined due to contact with the pair of guide members 70, 70.

(4) Modifications Although one embodiment has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.

  In the above embodiment, when the pair of guide members 70 press the product P and press the upper transport conveyor 12, the failure of the packaging bag B of the product P is determined based on the reaction force received by the upper transport conveyor 12. Although described with an example, the present invention is not limited to this. For example, when the pair of guide members 70 press the product P and press the upper transport conveyor (second member) 12, instead of or in addition to the upper transport conveyor 12, a pair of guide members (first The quality of the packaging bag B of the product P may be determined based on the reaction force received by the members 70, 70.

  In the above-described embodiment, the presence or absence of a defect in the packaging bag B is determined by the servomotor 41 based on the amount of displacement in the vertical direction Z due to the reaction force received from the product P guided between the lower conveyor 11 and the upper conveyor 12. Although an example of determination has been described, the present invention is not limited to this. For example, after the product P is pressed by a servomotor so as to maintain the upper transport conveyor 12 (second member) and the lower transport conveyor 11 at a predetermined interval, the pressing reaction force of the product P is detected by the servomotor. Thus, the quality of the packaging bag B may be determined.

  In the above embodiment, the configuration in which the servomotor 41 is attached to the upper transport conveyor 12 has been described as an example, but the present invention is not limited to this. For example, an elastic body such as a spring that applies a predetermined pressing force is attached to the upper transport conveyor (second member) 12, and a vertical direction when the product P is sandwiched between the lower transport conveyor 11 and the upper transport conveyor 12. The quality of the packaging bag B may be determined based on the displacement amount to Z. Further, when the upper transport conveyor 12 presses the product P, a means for detecting a reaction force received by the pair of guide members (first members) 70 and / or the upper transport conveyor (first member) 12 from the product P is provided. Is not limited to the embodiment or the modified example.

  In the above-described embodiment, an example has been described in which the pair of guide members 70, 70 sandwich the product P from the left-right direction Y, and the upper transport conveyor 12 sandwiches the lower transport conveyor 11 from the up-down direction Z. The present invention is not limited to this. For example, in a seal check device (bag inspection device) according to a modified example, a product P conveyed while being nipped by a pair of belt conveyors facing each other in the left-right direction Y is vertically moved by a pair of guide members (first members). It is good also as composition which pinches from. In this case, it may be attached to a pair of belt conveyors and / or a pair of guide members. Even when the control unit (determination unit) 60 presses the pair of guide members, the control unit (determination unit) 60 determines the quality of the packaging bag B based on a reaction force received from the product P by the pair of guide members and / or the pair of belt conveyors. Good.

  In the seal check device of this modified example, when the product P is pressed by the pair of guide members from the vertical direction Z different from the transport direction X, the air A dispersed in the packaging bag B is distributed by the pair of belt conveyors and the packaging bag. It is collected between the contents C in B. The pair of belt conveyors press the product P in a state where the air A in the packaging bag B is collected between the pair of belt conveyors and the contents C in the packaging bag B. Thereby, when the pair of belt conveyors press the product P, the possibility of pressing the contents C in the packaging bag B is reduced. As a result, even if the amount of air filled in the packaging bag B of the product P is small, the quality of the packaging bag B of the product P in which the content C is packaged can be inspected.

  In the above-described embodiment, an example has been described in which the product P is pressed from both sides by sandwiching the product P from the left-right direction Y by the pair of guide members (first members) 70, 70. Alternatively, the product P may be pressed in one direction along the left-right direction Y so as to sandwich the product P with the frame 21 of the lower conveyor 11.

  On the pressing surfaces 71a, 71a of the pair of guide members 70, 70 for pressing the product P of the above-described embodiment, a delivery unit for sending the product P in the transport direction X may be further arranged. Examples of the sending section are a belt conveyor and a driving roller. In this case, for example, as shown in FIG. 11, a roller group 178a, 178b, 178c, 178d including at least one drive roller is arranged, and the belt 171a moves along the pressing surfaces 71a of the pair of guide members. May be arranged. Thereby, the product P guided between the pair of guide members 170 can be reliably transported in the transport direction X.

  In the above embodiment, the pair of guide members 70, 70 are arranged at an interval W1 from each other and are immovably arranged. For example, a position where the upper transport conveyor 12 presses the product P is described. The product P may be pinched at the timing when the product P is transported. According to this configuration, the product P can be held at an appropriate position.

  In the above embodiment, the transport belts 24 and 35 of the upper transport conveyor 12 and the lower transport conveyor 11 are of a flat belt type, but may be a round belt or a mesh belt.

  The various embodiments and modifications described above may be combined in various ways without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Seal check device (bag inspection device), 11 ... Lower conveyor (conveyor), 12 ... Upper conveyor (second member), 21 ... Frame, 21a ... Second support member, 21b ... Bolt insertion hole, 41 ... Servo motor, 60 ... Control unit, 70, 170 ... Guide member (first member), 71 ... Main body part, 71a ... Pressing surface, 72 ... Tapered part, 75 ... Fixed part, 75a ... Elongated hole, 171a ... Belt , A: air, B: packaging bag, C: contents, P: product, X: transport direction, Y: left / right direction (different from the transport direction), Z: up / down direction (to the product pressing direction of the first member) Are different directions).

Claims (12)

A bag inspection device for inspecting a packaging bag of a product in which contents are packaged,
A first member that presses the product conveyed by the conveyance unit,
A second member having a pressing surface that presses a different direction or we push the said product being pressed, the commodity pressing direction of the first member by the first member,
When the second member presses the product, the first member and / or the second member to determine the quality of the packaging bag based on the reaction force received from the product, a determination unit,
The first member is a pair of guide members that extend in a direction in which the product is conveyed, and are arranged to face each other at a predetermined interval in a product pressing direction of the first member,
When viewed from the transport direction of the product, the second member extends to the outside of a region sandwiched by the pair of guide members in the product pressing direction of the first member, and the product pressing direction of the second member. Are arranged so as to sandwich the pair of guide members between the conveyance unit and
The pair of guide members move the air in the packaging bag between the second member and the contents in the packaging bag by pressing the product, and a pressing surface of the second member. Is a bag inspection device that presses the product outside a region sandwiched by the pair of guide members in the product pressing direction of the second member .   The determination unit, when the product pressed by the first member is pressed by the second member, determines the quality of the packaging bag based on the reaction force received by the second member from the product. Item 2. The bag inspection device according to Item 1. A servomotor that acquires a displacement amount of the first member and / or the second member in a direction opposite to a product pressing direction when the product is pressed by the second member;
The bag inspection device according to claim 1, wherein the determination unit acquires the reaction force based on the displacement amount.   The bag inspection device according to claim 1, wherein the first member presses the product from a direction different from a transport direction of the product. Wherein the first member is a pair of guide members for restricting the movement of the product pressing direction of the first member of the product carried by the front Symbol conveying section,
The said pair of guide members are arrange | positioned so that it may become smaller than the size of the said packaging bag in the goods press direction in the said 1st member of the said goods conveyed by the said conveyance part. The bag inspection apparatus according to any one of claims 1 to 7.   The bag inspection device according to claim 5, wherein the pair of guide members are provided such that the interval is adjustable.   The bag inspection apparatus according to claim 5, wherein the pair of guide members has a tapered portion in which the interval gradually decreases from an upstream side to a downstream side in the transport direction.   The bag inspection device according to any one of claims 5 to 7, wherein a pressing unit that presses the product in the pair of guide members is provided with a sending unit that sends the product in the transport direction.   The bag inspection device according to any one of claims 1 to 4, wherein the first member holds the product at a timing when the product is transported to a predetermined position.   The bag inspection device according to any one of claims 1 to 9, wherein a pressing surface of the first member and / or the second member that presses the product has irregularities.   The said 1st member and / or the said 2nd member are any one of Claims 1-10 in which the positional relationship of the said 1st member and the said 2nd member in the conveyance direction of the said goods is provided. The bag inspection device according to the item.   The bag inspection device according to any one of claims 1 to 11, wherein the first member is provided such that a position of the second member on the side of the second member in a product pressing direction is adjustable.

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